U.S. Department of the Interior

U.S. Geological Survey

Professional Paper 1725

In cooperation with the Texas Department of Transportation

Statistical Characteristics of Storm 

Interevent Time, Depth, and Duration for 

Eastern New Mexico, Oklahoma, and Texas
Technical Report Documentation Page

Form DOT F 1700.7 (8-72) Reproduction of completed page authorized

Front Cover: 

Top: A partly cloudy day with developing rain showers north of Comfort, Texas, June 24, 2006.

Bottom: An afternoon rain storm north of Comfort, Texas, June 24, 2006.

Back Cover: 

Top left: A small runoff-detention basin in northeast Austin, Texas, June 30, 2006.

Top middle: A small runoff-detention basin in northeast Austin, Texas, June 30, 2006.

Top right: A large runoff-detention basin under construction in north Austin, Texas, July 1, 2006.

Middle back: Fair-weather clouds over ranchland in southwestern Medina County, Texas, June 23, 2006. 

Middle front: A late afternoon sea breeze thunderstorm viewed east from central Austin, Texas, June 21, 2006. 

Bottom left: A cloudy afternoon at the Gray County, Texas, Interstate 40 rest area on August 12, 2005.

Bottom right: An evening thunderstorm along U.S. Highway 84 near Roscoe, Texas, on May 26, 2004.

1. Report No.

5–4194–01–1

2. Government Accession No. 3. Recipient’s Catalog No.

4. Title and Subtitle

STATISTICAL CHARACTERISTICS OF STORM INTEREVENT 

TIME, DEPTH, AND DURATION FOR EASTERN NEW MEXICO, 

OKLAHOMA, AND TEXAS

5. Report Date

July 2006

6. Performing Organization Code

7. Author(s)

William H. Asquith, Meghan C. Roussel, Theodore G. Cleveland, Xing Fang, 

and David B. Thompson

8. Performing Organization Report No.

U.S. Geological Survey

Professional Paper 1725

9. Performing Organization Name and Address

 U.S. Geological Survey

 Water Resources Discipline

 8027 Exchange Drive

 Austin, TX 78754

10. Work Unit No. (TRAIS)

11. Contract or Grant No.

Project 5–4194–01–1

12. Sponsoring Agency Name and Address

Texas Department of Transportation

Research and Technology Implementation Office

4000 Jackson Ave., Bldg. 1

P.O. Box 5080

Austin, TX 78731

U.S. Geological Survey

Water Resources Discipline

8027 Exchange Drive

Austin, TX 78754

13. Type of Report and Period Covered

Implementation of Research 

Sept. 2005–July 2006

14. Sponsoring Agency Code

15. Supplementary Notes

Project conducted in cooperation with the Texas Department of Transportation.

16. Abstract

The design of small runoff-control structures, from simple floodwater-detention basins to sophisticated best-management 

practices, requires the statistical characterization of rainfall as a basis for cost-effective, risk-mitigated, hydrologic engineering 

design. The U.S. Geological Survey, in cooperation with the Texas Department of Transportation, has developed a framework to 

estimate storm statistics including storm interevent times, distributions of storm depths, and distributions of storm durations for 

eastern New Mexico, Oklahoma, and Texas. The analysis is based on hourly rainfall recorded by the National Weather Service. 

The database contains more than 155 million hourly values from 774 stations in the study area. Seven sets of maps depicting 

ranges of mean storm interevent time, mean storm depth, and mean storm duration, by county, as well as tables listing each of 

those statistics, by county, were developed. The mean storm interevent time is used in probabilistic models to assess the 

frequency distribution of storms. The Poisson distribution is suggested to model the distribution of storm occurrence, and the 

exponential distribution is suggested to model the distribution of storm interevent times. The four-parameter kappa distribution 

is judged as an appropriate distribution for modeling the distribution of both storm depth and storm duration. Preference for the 

kappa distribution is based on interpretation of L-moment diagrams. Parameter estimates for the kappa distributions are 

provided. Separate dimensionless frequency curves for storm depth and duration are defined for eastern New Mexico, 

Oklahoma, and Texas. Dimension is restored by multiplying curve ordinates by the mean storm depth or mean storm duration to 

produce quantile functions of storm depth and duration. Minimum interevent time and location have slight influence on the scale

and shape of the dimensionless frequency curves. Ten example problems and solutions to possible applications are provided.

17. Key Words

Precipitation, Storm statistics, Storm runoff, Urban runoff, L-moments, New 

Mexico, Oklahoma, Texas

18. Distribution Statement

No restrictions.

19. Security Classif. (of report)

Unclassified

20. Security Classif. (of this page)

Unclassified

21. No. of pages

299

22. Price

$
Statistical Characteristics of Storm 

Interevent Time, Depth, and Duration for 

Eastern New Mexico, Oklahoma, and Texas

By William H. Asquith, Meghan C. Roussel, Theodore G. Cleveland, Xing Fang, 

and David B. Thompson

U.S. Department of the Interior

U.S. Geological Survey

In cooperation with the Texas Department of Transportation

Professional Paper 1725
U.S. Department of the Interior

DIRK KEMPTHORNE, Secretary

U.S. Geological Survey

P. Patrick Leahy, Acting Director

U.S. Geological Survey, Reston, Virginia: 2006

For sale by U.S. Geological Survey, Information Services

Box 25286, Denver Federal Center

Denver, CO 80225

For more information about the USGS and its products:

Telephone: 1-888-ASK-USGS

World Wide Web: http://www.usgs.gov/

Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply

endorsement by the U.S. Government.

Although this report is in the public domain, permission must be secured from the individual copyright owners to

reproduce any copyrighted materials contained within this report.

Suggested citation:

Asquith, W.H., Roussel, M.C., Cleveland,T.G., Fang, Xing, and Thompson, D.B., 2006, Statistical characteristics of storm

interevent time, depth, and duration for eastern New Mexico, Oklahoma, and Texas: U.S. Geological Survey

Professional Paper 1725, 299 p.

Also available at http://pubs.water.usgs.gov/pp1725/

Library of Congress Cataloging-in-Publication Data

Statistical characteristics of storm interevent time, depth, and duration for eastern New Mexico, Oklahoma, and Texas / 

by William H. Asquith ... [et al.].

p. cm. — (Professional paper ; 1725)

Includes bibliographical references.

ISBN 1-411-31041-1

1. Rainstorms—New Mexico—Statistics. 2. Rainstorms—Oklahoma—Statistics. 3. Rainstorms—Texas—Statistics. 

I. Asquith, William H. 

QC925.1.U8N6 2006

551.57'72789—dc22 2006018997
iii

Contents

Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Purpose and Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Previous Studies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Storm Research Sponsored by the Texas Department of Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Other Studies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Database of Hourly Rainfall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Analysis of Site-Specific Statistical Characteristics of Hourly Rainfall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Minimum Interevent Time of Rainfall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Storm Interevent Time and Distribution of Depth and Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Quantile Functions of Storm Depth and Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Statistical Characteristics of Storm Interevent Time, Depth, and Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Regionalization of Storm Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Maps of Mean Storm Interevent Time, Depth, and Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Tables of Mean Storm Interevent Time, Depth, and Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Example Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Site-Specific Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Example 1: Estimation of Storm Occurrence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Example 2: Estimation of Interevent Times of Storms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Example 3: Estimation of the Empirical Distribution of Storm Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Example 4: Estimation of the Continuous Distribution of Storm Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Example 5: Statistical Simulation of Rainfall Intensity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Regional Approach by County . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Example 6: Regional Estimation of Storm Occurrence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Example 7: Computation of the Storm-Captured Percentage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Example 8: Regional Estimation of the Empirical Distribution of Storm Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Example 9: Estimation of the Uncertainty of a Regional Estimate of a Storm Depth Percentile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Example 10: Estimation of the Expected Storage in a BMP Using Mean Storm Interevent Time, Depth, and Duration . . . . . . . . . . . . . . . . . . 44

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Appendix 1—L-Moments and Sample L-Moments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

L-moments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Sample L-moments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Appendix 2—Storm Statistics for Hourly Rainfall Stations in Eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

2–1.1 — 2–1.7. Number of storms, total duration, and mean storm interevent time defined by:

2–1.1. 6-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

2–1.2. 8-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

2–1.3. 12-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

2–1.4. 18-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

2–1.5. 24-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

2–1.6. 48-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

2–1.7. 72-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
iv

2–2.1 — 2–2.7. L-moments of storm depth defined by:

2–2.1. 6-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

2–2.2. 8-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

2–2.3. 12-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

2–2.4. 18-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

2–2.5. 24-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

2–2.6. 48-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

2–2.7. 72-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

2–3.1 — 2–3.7. L-moments of storm duration defined by:

2–3.1. 6-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

2–3.2. 8-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

2–3.3. 12-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

2–3.4. 18-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

2–3.5. 24-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

2–3.6. 48-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

2–3.7. 72-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

2–4.1 — 2–4.7. Empirical distribution of storm depth defined by:

2–4.1. 6-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

2–4.2. 8-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

2–4.3. 12-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

2–4.4. 18-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

2–4.5. 24-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

2–4.6. 48-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

2–4.7. 72-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

2–5.1 — 2–5.7. Empirical distribution of storm duration defined by:

2–5.1. 6-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

2–5.2. 8-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

2–5.3. 12-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

2–5.4. 18-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

2–5.5. 24-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

2–5.6. 48-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

2–5.7. 72-hour minimum interevent time for hourly rainfall stations in eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Appendix 3—Storm Statistics for Hourly Rainfall Stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

3–1.1 — 3–1.7. Number of storms, total duration, and mean storm interevent time defined by:

3–1.1. 6-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

3–1.2. 8-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

3–1.3. 12-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

3–1.4. 18-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

3–1.5. 24-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

3–1.6. 48-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

3–1.7. 72-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

3–2.1 — 3–2.7. L-moments of storm depth defined by:

3–2.1. 6-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

3–2.2. 8-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

3–2.3. 12-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

3–2.4. 18-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

3–2.5. 24-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

3–2.6. 48-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

3–2.7. 72-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
v

3–3.1 — 3–3.7. L-moments of storm duration defined by:

3–3.1. 6-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

3–3.2. 8-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

3–3.3. 12-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

3–3.4. 18-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

3–3.5. 24-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

3–3.6. 48-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

3–3.7. 72-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

3–4.1 — 3–4.7. Empirical distribution of storm depth defined by:

3–4.1. 6-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

3–4.2. 8-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

3–4.3. 12-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158

3–4.4. 18-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

3–4.5. 24-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

3–4.6. 48-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

3–4.7. 72-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

3–5.1 — 3–5.7. Empirical distribution of storm duration defined by:

3–5.1. 6-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

3–5.2. 8-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

3–5.3. 12-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

3–5.4. 18-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

3–5.5. 24-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

3–5.6. 48-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

3–5.7. 72-hour minimum interevent time for hourly rainfall stations in Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Appendix 4—Storm Statistics for Hourly Rainfall Stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

4–1.1 — 4–1.7. Number of storms, total duration, and mean storm interevent time defined by:

4–1.1. 6-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

4–1.2. 8-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

4–1.3. 12-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

4–1.4. 18-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

4–1.5. 24-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

4–1.6. 48-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

4–1.7. 72-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

4–2.1 — 4–2.7. L-moments of storm depth defined by:

4–2.1. 6-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

4–2.2. 8-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

4–2.3. 12-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

4–2.4. 18-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

4–2.5. 24-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

4–2.6. 48-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

4–2.7. 72-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

4–3.1 — 4–3.7. L-moments of storm duration defined by:

4–3.1. 6-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

4–3.2. 8-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

4–3.3. 12-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

4–3.4. 18-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

4–3.5. 24-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231

4–3.6. 48-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235

4–3.7. 72-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
vi

4–4.1 — 4–4.7. Empirical distribution of storm depth defined by:

4–4.1. 6-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

4–4.2. 8-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

4–4.3. 12-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

4–4.4. 18-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

4–4.5. 24-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259

4–4.6. 48-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263

4–4.7. 72-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267

4–5.1— 4–5.7. Empirical distribution of storm duration defined by:

4–5.1. 6-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271

4–5.2. 8-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275

4–5.3. 12-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279

4–5.4. 18-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

4–5.5. 24-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287

4–5.6. 48-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291

4–5.7. 72-hour minimum interevent time for hourly rainfall stations in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299

Figures

1–3. Maps showing locations of National Weather Service hourly rainfall stations in: 

1. Eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2. Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3A. Western Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3B. Northeastern Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3C. Southeastern Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4. Graphs showing empirical distributions of (A) storm depth and (B) storm duration for 3,331 storm events defined by an 8-hour 

minimum interevent time for station 0016 Abilene Regional Airport, Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5. L-moment diagram at two scales (A and B) showing relation between L-skew and L-kurtosis of the distributions of storm 

depth and storm duration defined by the 8-hour minimum interevent time and theoretical relations for selected probability 

distributions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6–9. Graphs showing: 

6. Dimensionless kappa distribution frequency curves for (A) storm depth and (B) storm duration for the selected 

minimum interevent times in Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7. Dimensionless kappa distribution frequency curves for storm depth and storm duration for 24-hour minimum interevent 

time for eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8. Dimensionless exponential gamma and kappa distributions of storm depth for 24-hour minimum interevent time in 

Texas, graphed with (A) a linear y-axis scale and (B) a base-10 log y-axis scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

9. Storm depth and storm duration for 3,331 storm events defined by an 8-hour minimum interevent time for station 

0016 Abilene Regional Airport, Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

10–16. Maps showing mean storm interevent time defined by: 

10. 6-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

11. 8-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

12. 12-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

13. 18-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

14. 24-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

15. 48-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

16. 72-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
vii

17–23. Maps showing mean storm depth defined by: 

17. 6-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

18. 8-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

19. 12-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

20. 18-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

21. 24-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

22. 48-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

23. 72-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

24–30. Maps showing mean storm duration defined by: 

24. 6-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

25. 8-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

26. 12-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

27. 18-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

28. 24-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

29. 48-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

30. 72-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Tables

1–3. National Weather Service hourly rainfall stations in: 

1. Eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

2. Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

3. Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

4. Selected storm statistics for station 4570 Jayton, Texas, illustrating influence of minimum interevent time on statistics . . . . . . . . . . . . . . . . . . 64

5–6. Regionwide or statewide record-length, weighted-average: 

5. Storm depth L-moments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

6. Mean storm interevent time and storm duration L-moments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

7–8. Dimensionless gamma and kappa distributions fit to record-length, weighted-average storm: 

7. Depth L-moments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8. Duration L-moments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

9–11. Summary statistics and diagnostic statistics of mean storm: 

9. Interevent time maps for each minimum interevent time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

10. Depth maps for each minimum interevent time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

11. Duration maps for each minimum interevent time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

12–20. Mean storm: 

12. Interevent time by county for eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

13. Depth by county for eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

14. Duration by county for eastern New Mexico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

15. Interevent time by county for Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

16. Depth by county for Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

17. Duration by county for Oklahoma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

18. Interevent time by county for Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

19. Depth by county for Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

20. Storm duration by county for Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

21. Example simulations of storm interevent time from example 2 using 24-hour minimum interevent time for station 0211 Amarillo 

Weather Service Office Airport, Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

22. Distribution of storm depth for examples 3 and 4 based on site-specific statistics for station 4311 Houston Alief, Texas . . . . . . . . . . . . . . . . . . 94

23. Regional values for selected storm depth percentiles in Randall County, Texas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
viii

Conversion Factors 

Vertical coordinate information is referenced to the National Geodetic Vertical Datum of 1929 (NGVD 29).

Multiply By To obtain

inch (in.) 25.4 millimeter (mm)

foot (ft) 0.3048 meter (m)

mile (mi) 1.609 kilometer (km)
Statistical Characteristics of Storm 

Interevent Time, Depth, and Duration for 

Eastern New Mexico, Oklahoma, and Texas

By William H. Asquith1, Meghan C. Roussel1, Theodore G. Cleveland2, Xing Fang3, 

and David B. Thompson4

Abstract

The design of small runoff-control structures, from simple 

floodwater-detention basins to sophisticated best-management 

practices, requires the statistical characterization of rainfall as a 

basis for cost-effective, risk-mitigated, hydrologic engineering 

design. The U.S. Geological Survey, in cooperation with the 

Texas Department of Transportation, has developed a framework to estimate storm statistics including storm interevent 

times, distributions of storm depths, and distributions of storm 

durations for eastern New Mexico, Oklahoma, and Texas. The 

analysis is based on hourly rainfall recorded by the National 

Weather Service. The database contains more than 155 million 

hourly values from 774 stations in the study area. Seven sets of 

maps depicting ranges of mean storm interevent time, mean 

storm depth, and mean storm duration, by county, as well as 

tables listing each of those statistics, by county, were developed. The mean storm interevent time is used in probabilistic 

models to assess the frequency distribution of storms. The 

Poisson distribution is suggested to model the distribution of 

storm occurrence, and the exponential distribution is suggested 

to model the distribution of storm interevent times. The fourparameter kappa distribution is judged as an appropriate distribution for modeling the distribution of both storm depth and 

storm duration. Preference for the kappa distribution is based on 

interpretation of L-moment diagrams. Parameter estimates for 

the kappa distributions are provided. Separate dimensionless 

frequency curves for storm depth and duration are defined for 

eastern New Mexico, Oklahoma, and Texas. Dimension is 

restored by multiplying curve ordinates by the mean storm 

depth or mean storm duration to produce quantile functions of 

storm depth and duration. Minimum interevent time and location have slight influence on the scale and shape of the dimensionless frequency curves. Ten example problems and solutions 

to possible applications are provided.

Introduction

The design of runoff-control structures, from simple 

floodwater-detention basins to sophisticated best-management 

practices (BMPs), such as engineered sand-filtration ponds, 

requires the statistical characterization of rainfall as a basis for 

cost-effective, risk-mitigated, hydrologic engineering design. 

BMPs and similar structure types (collectively referred to in this 

report as BMPs) are present in many suburban and urban areas, 

usually in small watersheds (less than about 10 square miles). 

BMPs can be a substantial component of public and private 

drainage infrastructure; the characteristics of rainfall for a given 

location strongly influence the hydrologic and hydraulic function and, to a lesser degree, the water-quality performance of 

these structures. However, to date (2006), there has not been a 

comprehensive procedural framework in Texas for analysis of 

the probabilistic, or expected, performance of these structures 

in the context of rainfall inputs to a watershed.

In 2000, the U.S. Geological Survey, in cooperation with 

the Texas Department of Transportation, and in collaboration 

with University of Houston, Lamar University, and Texas Tech 

University, initiated a research program of Texas rainfall characteristics to enhance hydrologic engineering design. One 

major objective of the program is to provide comprehensive 

statistics of hourly rainfall in support of BMP design in Texas. 

To better define rainfall characteristics near the borders of 

Texas, the study area for this report was expanded to include 

eastern New Mexico and Oklahoma. The expansion also was 

made so that the study area has a more rectangular boundary to 

enhance geostatistical analysis of storm statistics near the borders of Texas.

1 U.S. Geological Survey.

2 University of Houston.

3 Lamar University.

4 Texas Tech University.
2 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Information on mean storm interevent time enables computation of the expected number of storms in a specified period 

of time. Information on rainfall depth for storms (hereinafter, 

storm depth) facilitates cost-benefit analysis of BMP performance efficiency. Hydrologic engineers and decision makers 

use storm depth information in reviewing, revising, or establishing guidelines for BMP design. For BMP design, the distribution of storm depth is important because it is related to runoff 

pollutant mass (Wanielista and Yousef, 1993, p. 221). The 

distribution of storm duration is useful in assessing storm average rainfall rates and other aspects of hydrologic engineering 

design. Storms are defined by a minimum interevent time—a 

time in which no rainfall occurs. The minimum interevent time, 

which is appropriate for specific applications, can be determined by the drawdown time, infiltration time, or treatment 

time for a given BMP design. 

Purpose and Scope

This report presents a framework for analysis of the probabilistic, or expected, function of BMPs in the context of rainfall inputs to a watershed. Specifically, the report documents 

three statistics of storms recorded in hourly rainfall data by the 

National Weather Service in eastern New Mexico, Oklahoma, 

and Texas. The three statistics are (1) mean storm interevent 

time, measured in days of no rainfall between successive 

storms, (2) distribution of storm depth, measured in inches, and 

(3) distribution of storm duration, measured in hours. These 

statistics are provided for each of seven selected minimum 

interevent times: 6, 8, 12, 18, 24, 48, and 72 hours. 

The primary products or results reported here are 

1. Maps depicting ranges of mean storm interevent time, 

mean storm depth, and mean storm duration, by county; 

2. Tables listing mean storm interevent time, mean storm 

depth, and mean storm duration, by county; and

3. Numerous dimensionless frequency curves for storm 

depth and duration to be used in conjunction with the 

maps and tables of mean storm depth and duration.

Secondary results are extensive tables listing site-specific 

storm statistics. These statistics include the number of storms, 

total duration, mean storm interevent time, L-moments (mean, 

L-scale, coefficient of L-variation, L-skew, L-kurtosis, and 

Tau5), and percentiles (1st, 2nd, 10th, 25th, 50th, 75th, 90th, 

98th, and 99th) for both storm depth and duration for each of the 

seven minimum interevent times. Finally, 10 example problems 

and solutions using site-specific and regional (by county) 

approaches to possible applications are provided.

Previous Studies

Storm Research Sponsored by the Texas Department 

of Transportation

The Texas Department of Transportation has sponsored 

a multifaceted research program through several research 

projects on rainfall characteristics in Texas from the mid-1990s 

through 2005. A chronological list with brief description of 

results follows:

1. Asquith (1998)—Defines the depth-duration frequency 

(DDF) of rainfall annual maxima in Texas by providing 

an atlas of the parameters of probability distributions. 

DDF values commonly are used in hydrologic engineering design. An example of a DDF value is the depth of 

rainfall for the 50-year, 6-hour storm.

2. Lanning-Rush and others (1998)—Provides envelope 

curves for extreme storms in Texas showing the relation 

between areal storm depth and storm extent. The report 

also provides a bibliography of large and historically 

important storms in Texas.

3. Asquith (1999)—Defines areal-reduction factors (ARF) 

for the 1-day design storm in the Austin, Dallas, and 

Houston areas. ARF are used in conjunction with DDF 

values to adjust DDF for the influence of watershed area.

4. Asquith and Famiglietti (2000)—Documents the annualmaxima-centered approach used by Asquith (1999) to 

define ARF.

5. Al-Asaadi (2002)—Provides detailed analysis of dimensionless hyetographs for 204 runoff-producing storms 

for 12 watersheds in the San Antonio area. The report 

also provides analysis of the burst characteristics of the 

storms. The rainfall data considered are summarized in 

Asquith and others (2005).

6. Asquith (2003)—Provides a comprehensive analysis of 

L-moments and other statistics of hyetographs for runoffproducing storms in Texas. The rainfall data considered 

are summarized in Asquith and others (2005).

7. Asquith and Roussel (2003)—Provides an atlas of mean 

interoccurrence intervals of selected thresholds of daily 

rainfall in Texas. Interoccurrence intervals can enhance 

the planning and construction of infrastructure as well 

as runoff-control structures by providing hydrologic 

engineers with information on the frequency of daily 

rainfall.

8. Asquith and others (2003)—Provides two separate equation pairs based on a triangular model of the expected 

hyetograph for runoff-producing storms having more 

than 0.5 inch of rainfall in Texas for two ranges of storm 

duration (0 to 24 hours and 24 to 72 hours). The report 

augments the research of Asquith (2003).
Introduction 3

9. Asquith and Thompson (2003)—Provides an alternative 

hyetograph model (L-gamma) to the triangular model 

(Asquith, 2003; Asquith and others, 2003). Provides 

three distinct hyetograph equations for three storm duration ranges for Texas. These models are more sophisticated than the triangular models and might be preferable 

to the triangular models in some applications. 

10. Asquith and Roussel (2004)—Provides a directly interpretable atlas of DDF in Texas on the basis of research 

results of Asquith (1998). The report contains 96 maps of 

the depth of rainfall for 12 storm durations and eight 

annual nonexceedance probabilities (recurrence intervals). More information regarding the report is available 

in Strand (2003).

11. Williams-Sether and others (2004)—Provides documentation of the empirical dimensionless hyetographs for 

selected durations of runoff-producing storms in Texas. 

The report augments the research of Asquith (2003). 

12. Asquith and others (2005)—Provides numerous dimensionless rainfall hyetographs for Texas, describes the 

analytical approach used, and provides information 

regarding distribution of storm depth essentially identical 

to that presented in this report. 

Other Studies

The U.S. Environmental Protection Agency (1986, fig. 

A–2) provides a map of nine regions encompassing the conterminous United States and a table showing the mean and coefficient of variation for storm interevent times, storm depths, and 

storm durations for storms defined by a 3- to 4-hour minimum 

interevent time. The area east of 96 degrees (°) west longitude 

(region 4) is coincident with part of the study area (eastern 

Oklahoma and eastern Texas) and has a mean storm interevent 

time of about 4.1 days, a mean storm depth of about 0.58 inch, 

and a mean storm duration of about 7.3 hours. The area west of 

96° west longitude (region 5) is coincident with the remaining 

part of the study area and has a mean storm interevent time of 

about 4.5 days, a mean storm depth of about 0.33 inch, and a 

mean storm duration of about 4.0 hours. (The results in this 

report from rigorous analysis show that these statistics have 

a more complex pattern of variation than shown by the U.S. 

Environmental Protection Agency [1986], but specific comparison is difficult.)

Schueler (1987, p. 3.9) describes six rules for sizing 

extended detention BMPs (basins) in the Washington, D.C., 

area. For example, rule 4 states that the BMP should be sized to 

accommodate the “runoff volume generated from a one inch 

storm released [within the BMP area] over 24 hours.” 

Wanielista and Yousef (1993, p. 221) state that 4- to 5-

hour minimum interevent times have been used by previous 

authors for urban BMP design and also report that a minimum 

interevent time for a given BMP design “should be long enough 

to ensure that runoff events are independent of one another.” 

Contaminant removal effectiveness (when measured in terms of 

runoff diversion) is based on the number of storms per year or 

the percentage of storms captured by a BMP. Wanielista and 

Yousef (1993, table 7.1) report that the 90th-percentile storm 

for Austin, Tex., for a 4-hour minimum interevent time is about 

1.0 inch5. 

Adams and Papa (2000) discuss the probabilistic functioning of small-watershed BMPs and characterize the statistical distributions of mean storm interevent times, depths, and 

durations. Adams and Papa (2000) also discuss minimum interevent times and derive extensive formulas to estimate various 

aspects of BMP function, including the expected capture or 

expected spillage of a BMP. They use a runoff-coefficient 

initial-abstraction model of the rainfall-runoff process. Their 

derivations are based on an assumption that storm interevent 

time, depth, and duration each are exponentially distributed6.

Database of Hourly Rainfall

This study, although done specifically for Texas, includes 

data from eastern New Mexico and Oklahoma and therefore is 

applicable to these areas as well. Data from these areas were 

included to enhance the reliability of statistical interpretation 

near the Texas borders with New Mexico and Oklahoma.

National Weather Service hourly rainfall data for stations 

in the study area were obtained from Hydrosphere (2003). All 

hourly data for the period of record for all stations, including 

number, name, latitude, and longitude, were compiled for the 

study. The first calendar year of data is 1947 for eastern New 

Mexico, 1947 for Oklahoma, and 1940 for Texas; the last 

calendar year of data is 2002 for the three states. The database 

contains more than 155 million values of hourly rainfall (zero 

values included) from 774 hourly stations. Of these, 92 stations 

and more than 18 million values are available for eastern 

New Mexico; 149 stations and more than 33 million values 

are available for Oklahoma; and 533 stations and more than 

103 million values are available for Texas. For perspective, for 

an 8-hour minimum interevent time, 97,491 storms in eastern 

New Mexico, 206,646 storms in Oklahoma, and 584,159 storms 

in Texas are identified. Stations used in the analysis are listed in 

tables 1–3 (at end of report) and are shown in figures 1–3 for 

eastern New Mexico, Oklahoma, and Texas, respectively. 

5 For comparison, the 90th-percentile storm depth for a 6-hour minimum interevent time at station 0428 Austin Camp Mabry, Tex., is computed as 1.14 inches 

for this report (see section “Analysis of Site-Specific Statistical Characteristics of Hourly Rainfall” in this report).

6 A demonstration of a subset of the results of Adams and Papa (2000) is provided in example 9 in section “Example Applications” in this report. The statistical 

results for eastern New Mexico, Oklahoma, and Texas are used in some of the techniques developed by Adams and Papa (2000).
4 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Acknowledgments

The authors acknowledge the following colleagues of the 

Texas Department of Transportation for their considerable professional and technical support of this work and their critical 

feedback on project direction: Amy J. Ronnfeldt, 5–4194 

Project Director; George R. Herrmann, 5–4194 Project Advisor; and David Stolpa (retired), 5–4194 Project Advisor. The 

authors also acknowledge David J. Holtschlag, U.S. Geological 

Survey, for his thoughtful review comments and supporting 

numerical simulations of an early draft; and J. Curtis Weaver, 

U.S. Geological Survey, for a thorough review that greatly 

enhanced the report.

Analysis of Site-Specific Statistical 

Characteristics of Hourly Rainfall

Statistical analysis of storms for each station includes the 

computation of site-specific values of mean storm interevent 

time, selected L-moments of storm depth, percentiles of storm 

depth, L-moments of storm duration, and percentiles of storm 

duration. On the basis of the site-specific statistics, regional 

analysis was used to develop a method to estimate the statistics 

for arbitrary locations in the study area. These statistics provide 

for detailed assessment of BMP function for specific rainfall 

characteristics. 

Minimum Interevent Time of Rainfall

Before the site-specific statistics of rainfall can be computed, it is necessary to establish a method to define distinct 

storms from the hourly time series of rainfall data. Typically, 

distinct storms are defined using a minimum interval of no rainfall, which is referred to as a minimum interevent time.

Time series of hourly rainfall data are described as 

sequences of nonzero rainfall depths separated by sequences of 

zero rainfall depths, both of varying lengths. As the lengths of 

zero rainfall sequences increase, it is natural to categorize the 

intervals of rainfall into distinct storms. Brief periods of zero 

rainfall (intrastorm zero values) can be, and often are, present 

within a particular storm.

One approach to distinguish between short and long time 

intervals is to analyze the rainfall time series using autocorrelation (not presented in this report). Another approach, the focus 

of this report, is to distinguish long time intervals according to 

the drawdown or drainage time of a BMP. BMP design is influenced by requirements for the drawdown time, infiltration time, 

or treatment time—a structural minimum interevent time. 

To clarify the concept of structural minimum interevent 

time, consider a hypothetical city ordinance that requires 

BMPs, which start from full storage conditions and no additional runoff input, to drain completely in 48 hours. If storm statistics are defined by a 48-hour structural minimum interevent 

time associated with storms, the BMP in the context of rainfall 

input is said to be memoryless. The term “memoryless” refers 

to expected absence of BMP storage before the runoff from the 

next storm arrives. Specifically, the 48-hour minimum interevent time ensures that storage in the BMP is zero prior to the 

arrival of runoff from the next storm. Without so naming, 

Wanielista and Yousef (1993, p. 222–223) discuss a structural 

minimum interevent time being set by the infiltration time so 

that the infiltration pond (a BMP) will be empty before the next 

storm begins.

Seven structural minimum interevent times were selected: 

6, 8, 12, 18, 24, 48, and 72 hours. These interevent times are 

expected to provide flexibility for a wide range of applications. 

From minimum interevent times in this sequence, users of this 

report can interpolate statistics to minimum interevent times not 

explicitly considered here.

Minimum interevent time has great influence on storm statistics. For the mean storm interevent time, mean storm depth 

and depth percentiles, and mean storm duration and duration 

percentiles, the magnitude of each statistic increases with 

increasing minimum interevent time. The influence of minimum interevent time is illustrated using selected site-specific 

statistics for station 4570 Jayton, Tex. (table 4, at end of report). 

The mean storm interevent time increases from about 8.5 days 

to almost 15 days; whereas the mean depth increases from about 

0.4 to about 0.8 inch. Increasing minimum interevent time also 

affects BMP design. For example, the 90th-percentile depth 

for storms with an 8-hour minimum interevent time is about 

1.2 inches. However, if a 72-hour drawdown time BMP is to 

have memoryless performance—that is, to perform without 

regard to previous storage conditions of the structure from earlier storms—then about 2.1 inches of storage is required to capture the runoff from 90 percent of all storms on the watershed. 

(For simplicity, it is assumed that all rainfall is converted to runoff.) An additional 0.9 inch (2.1 minus 1.2) or 1.75 (2.1 divided 

by 1.2) times more storage thus is required when the minimum 

interevent time increases from 8 to 72 hours. 

Storm Interevent Time and Distribution of Depth and 

Duration

For each of the minimum interevent times, the time series 

of hourly rainfall for each station was separated into sequences 

of storms for subsequent statistical analysis. As part of the statistical analysis, assumptions were made about the rainfall data, 

extracted storms, and computed statistics. The following 

assumptions extend discussion by Adams and Papa (2000, 

p. 60) and are not mutually exclusive:

1. Storms defined by the minimum interevent time are samples from a single underlying population.

2. Storms are homogeneous—that is, generated from the 

same population.
Analysis of Site-Specific Statistical Characteristics of Hourly Rainfall 5

Figure 1. Locations of National Weather Service hourly rainfall stations in eastern New Mexico. 

0 60 120 MILES

0 60 120 KILOMETERS

TEXAS

COLORADO

NEW MEXICO

OKLAHOMA

KANSAS

ARIZONA

ARKANSAS

LOUISIANA

LOCATION MAP

GRANDE

RIO

0 100 200 MILES

0 100 200 KILOMETERS

LEA

OTERO

EDDY

CHAVES

UNION

LINCOLN

QUAY

COLFAX

TAOS

SAN MIGUEL

MORA

TORRANCE

DEBACA

GUADALUPE

HARDING

ROOSEVELT

CURRY

SANTA FE

LOS ALAMOS

SANDOVAL

RIO ARRIBA

9686

9569

9193

9156

8816

8596

8518

8501

7736

7651

7638

7609

7283

7279

5866

5651

5370

4306

4112

4028

3288

2665

2510

2207

2030

1961

1887

1807

0606

0208 9265

9153 9148

8788

8358

8187

8085

8084

8078

8072

7738

7735

7649

7610

7605

7277

7254

7094

6951

6797

6659

6619

6492

6435

6275

6138

4862

4860

4856 4850

4089

4030 4026

3374

3242

3145

2700

2694

2625

2203

2139

1982

1963

1950 1956

1939

1840,

1515

1475

1469

1446

1440

1120

0646

0600

0407

0404

0205

0199

7604

1881

1480

36o

35o

34o

33o

32o

37o

103 104 o o 106o 105o
6 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 2. Locations of National Weather Service hourly rainfall stations in Oklahoma. 

96o 97o

98o 99 100 o 101 o 102 o o 103o

34o

35o

36o

37o

95o

OSAGE

TEXAS KAY

ELLIS

BEAVER

CADDO

CIMARRON

LE FLORE

WOODS

MCCURTAIN

GRADY

KIOWA

ATOKA

GRANT

CREEK

DEWEY

BRYAN

MAJOR

BLAINE

HARPER

CUSTER

CRAIG

PITTSBURG

LINCOLN

WASHITA

NOBLE

LOGAN

GARVIN

GARFIELD

TILLMAN

PAYNE

PUSHMATAHA

ALFALFA

CARTER

LOVE

WOODWARD

MAYES

COAL

HUGHES

ADAIR

COMANCHE

BECKHAM

TULSA

GREER

CANADIAN

JACKSON

LATIMER

ROGER

 MILLS

STEPHENS

CHOCTAW

COTTON

MUSKOGEE

DELAWARE HASKELL

CHEROKEE

MCINTOSH

NOWATA

JEFFERSON

MCCLAIN

OKLA-

 HOMA SEQUOYAH

JOHNSTON

OTTAWA

MARSHALL

WASHINGTON

KINGFISHER

PAWNEE

CLEVE-

 LAND

POTTAWATOMIE

SEMINOLE

MURRAY

PONTOTOC

ROGERS

WAGONER OKMULGEE OKFUSKEE

HARMON

7556

7358

9762

9748

9724

9719

9629

9503

9450

9404

9364

9300

9278

9247

9023

9014

8992

8879

8769

8708

8504

8501

8497

8470

8420

8290

8101 8029

7739

7732

7714

7705

7675

7660

7588

7412

7372

7309

7201

7196

7080

6944

6935

6926

6859

6760

6740

6729

6661

6656 6643

6638

6627 6620

6616

6612

6485

6391

6328

6130

5664

5662

5648

5589

5582

5581

5463

5329

5108

5068

5063

4978

4975

4969

4865

4812

4692

4506

4393

4388

4384 4386

4204

4202

4098

4052

4051

4010

4008

3835

3830

3740

3700

3628

3497

3407

3353

3304

3286

3281

3002

2997 2994

2852

2849

2678

2665 2654

2500

2334

2309

2242

2145

1954

1909

1902

1900

1891

1855

1750

1688

1684

1544

1437

1436

1391

1168

1148

0912

0908

0814

0670

0537

0535

0296

0293

0292

0260

0256

0242

0215

0188

0179

0026

0017

8884

8092 6940

4001

0 60 120 MILES

0 60 120 KILOMETERS

TEXAS

COLORADO

NEW MEXICO

OKLAHOMA

KANSAS

ARIZONA

ARKANSAS

LOUISIANA

LOCATION MAP

GRANDE

RIO

0 100 200 MILES

0 100 200 KILOMETERS
Analysis of Site-Specific Statistical Characteristics of Hourly Rainfall 7

Figure 3A. Locations of National Weather Service hourly rainfall stations in western Texas. 

DALLAM

HARTLEY

OLDHAM

SHERMAN

MOORE

POTTER

HANS-

 FORD

OCHIL-

 TREE LIPSCOMB

HUTCH-

 INSON ROBERTS

HEMP-

 HILL

CARSON

GRAY

WHEELER

DEAF SMITH

RANDALL

ARMSTRONG

DONLEY

COLLINGSWORTH

PARMER

CASTRO SWISHER

BAILEY

LAMB

HALE FLOYD

COCHRAN

HOCKLEY

LUBBOCK

CROSBY

HALL BRISCOE CHILDRESS

MOTLEY

COTTLE

DICKENS

KING

ANDREWS

GAINS

YOAKUM

TERRY LYNN

DAWSON

MARTIN HOWARD

BORDEN

SCURRY

GARZA

KENT

MITCHELL NOLAN

FISHER

STONE-

 WALL

LOVING

WINKLER

ECTOR

MIDLAND

GLASS-

 COCK STER-

 LING

COKE

EL

 PASO

HUDSPETH

CULBERSON

REEVES

JEFF DAVIS

PECOS

WARD

CRANE

UPTON

REAGAN

IRION

TOM

 GREEN

SCHLEICHER

CROCKETT TERRELL

PRESIDIO

BREWSTER

VAL VERDE

SUTTON

102o

101o

36o

34o

32o 104o 106o

30o

29o

105o

31o

103o

35o

33o

100o

0 60 120 MILES

0 60 120 KILOMETERS

TEXAS

COLORADO

NEW MEXICO

OKLAHOMA

KANSAS

ARIZONA

ARKANSAS

LOUISIANA

0 100 200 MILES

0 100 200 KILOMETERS

LOCATION MAP

GRANDE

RIO

AMARILLO

6792

5600

9574

9858

9830 9829

7481

7431

7311

7262

7116

7074

7060

6981

6935

6893

6776

6775

6740

6736 6734

6615

6504

6166

6136

6104

5658

5656

5596

5595

5594

5592

5591

5590

5589

5471

5411

5410

5358

5303

5247

5049

5048

4974

4880

4570

4498

4425

4098,

 4100

3462

3446

3442

3441

3410

3281

3280

3278

3277

3272

3189

3103

3034

3033

2815

2814

2813

2811

2797 2794

2621

2619

2617

2361

2360

2354

9570

9565

9544

9527

9499

9435

9329

9328

9295

9270

9248

9107

8400

8305

8289

8252

8068

8023

8022

7999

7997

7944

7943

7922

7534

2240

2238

2082

2053

2043

2042

1903

1761

1698

1697

1696

1694

1646

1641

1462

1437

8647

8631

8630

4299

9106

9037

8924

8761

8566

3841

5891

5890

5775

5770

3789

1267

1185

1080

1057

0950

0786

0784

0779

0776

0708

0556

0496 0495, 0498

0463

0394

0248

0211

0179

0178

0174

5579

9345

2357

8451

9304

9307
8 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 3B. Locations of National Weather Service hourly rainfall stations in northeastern Texas. 

94o

95o

96o

97o

98o

99o

100o

34o

33o

32o

BOWIE

CASS

RED

 RIVER LAMAR

DELTA

HOPKINS

CAMP

FRANKLIN

MORRIS

TITUS

HARDE-

 MAN

FOARD

KNOX

HASKELL

JONES

TAYLOR

CALLA-

 HAN

SHACKELFORD

THROCK-

 MORTON

EASTLAND

STEPHENS

YOUNG

ARCHER

BAYLOR

WILBARGER

WICHITA

CLAY

MONTAGUE

COOKE GRAYSON

JACK

WISE DENTON

PALO

PINTO

PARKER

TARRANT

FANNIN

COLLIN

HUNT

DALLAS

ROCK-

 WALL

KAUF-

 MAN

RAINS

WOOD

MARION

HARRISON

UPSHUR

GREGG

VAN

ZANDT

SMITH

HENDERSON

ERATH HOOD

SOMER-

 VELL

JOHN-

 SON ELLIS

RUSK PANOLA

NACOG- SHELBY

 DOCHES

NAVARRO

FREESTONE

HILL BOSQUE

COLEMAN

COMANCHE

HAMILTON

RUNNELS

ANDERSON

BROWN

LIMESTONE

MCLENNAN

MILLS

CHEROKEE

0 60 120 MILES

0 60 120 KILOMETERS

LOCATION MAP

TEXAS

COLORADO

NEW MEXICO

OKLAHOMA

KANSAS

ARIZONA

ARKANSAS

LOUISIANA

GRANDE

RIO

0 100 200 MILES

0 100 200 KILOMETERS

9916, 8944

9893

9729

7499

7363

7300

7274

7066

6834

6794

6788

6757

6660

6558

6335

6270

6177 6176

6108

6050

5618

5463

5348

5342

5341

5235

5228 5224

5081

4982

4979

4978 4973 4975

4866

4852

4577

4525

4517

4476

4440

4137

4040

3941

3546

3415

3047

2986

2818

2715

2415

2394

9371

9214 9213

9163

8335

8221

8062

8047

7745

7531 7608

2312

2142

2128 2131

2086

2019

1970

1937

1921

1876

1773

1500

8743

8696

4392

4278

4258 4257

9014

8942

8929

8898

8859

8778

8623

8584

8583

3884

3831

5996

3771

3668 3734

3646

3642

3579

3547

1139

0926

0923

0518

0408

0271 0262

0120

0016

1875 1914

1138

1042

0493

0015

5094

5766

4972

2336

2334

1063

0206 0208

9532

5958

5957

4679

5461

5258

3460

3370

3285

3284

3283

2404

2247

2244

2242

2096

8677

8563

3691

3673

1246

1245

0996

0691

3476

2090 2088

9417, 9419

9715

6210 5528

2309 1823

9522

1081

0202

3133

4520

2528

8625 5695

3826

7556

5192

5897

9817

9816
Analysis of Site-Specific Statistical Characteristics of Hourly Rainfall 9

Figure 3C. Locations of National Weather Service hourly rainfall stations in southeastern Texas. 

CONCHO

MCCUL-

 LOCH

SAN SABA

LAMPASAS

CORYELL

EDWARDS

KINNEY

MENARD

KIMBLE

MASON LLANO

GILLESPIE

KERR

REAL

BANDERA

BELL BURNET

WILLIAMSON

FALLS

TRAVIS

BLANCO

MILAM

ROBERT-

 SON

BURLE-

 SON

LEE

BASTROP

KENDALL

BEXAR

COMAL

HAYS

GUADA-

 LUPE

CALD-

 WELL

HOUSTON

TRINITY

ANGELINA

SABINE

 SAN

AUGUSTINE

POLK

TYLER

JASPER

NEWTON

LEON

MADISON

GRIMES

WALKER

BRAZOS

WASHING-

 TON

MONTGOMERY

JACINT

SAN

O

UVALDE

MEDINA

FRIO

MAVERICK

ZAVALA

DIMMIT

LA SALLE

ATASCOSA

CAMERON

WILLACY

HIDALGO

STARR

JIM

 HOGG

ZAPATA

BROOKS

KENEDY

WEBB

DUVAL

JIM WELLS

MCMULLEN

LIVE

 OAK

BEE

SAN 

 PATRICIO

NUECES

KLEBERG

WILSON

GONZALES

DEWITT

KARNES

GOLIAD

FAYETTE

LAVACA

COLORADO

WHARTON

AUSTIN

WALKER

FORT

 BEND

BRAZORIA

MATAGORDA

JACKSON

VICTORIA

REFUGIO

CALHOUN

ARANSAS

HARRIS

GALVESTON

LIBERTY

CHAMBERS

HARDIN

JEFFERSON

ORANGE

98o 96o 94o

28o

26o

30o

100o

97o 99o 95o

27o

29o

31o

0 60 120 MILES

0 60 120 KILOMETERS

0 100 200 MILES

0 100 200 KILOMETERS

TEXAS

COLORADO

NEW MEXICO

OKLAHOMA

KANSAS

ARIZONA

ARKANSAS

LOUISIANA

LOCATION MAP

GRANDE

RIO

BRIGGS

HOUSTON

9976

9814

9772

9665

7497

7243

7213

7174

7173

7140

7020

6750

6663

6275

6211

5661

5650

5580

5477

5431 5429

5424

5398

5312

5193

5123

5113

5060

5057

5056

5018

4934

4920

4878 4876

4819

4731

4696

4671

4670

4591

4563

4191

4058

3463

3431

3430

3329

3270

3267

3260

3156

2758

2744

2679

2676

2675

2462

2355

9588

9491

9365

9364

9363

9266

9222

9129

8531

8265

8081

8060

7992

7990 7981

7953

7951

7948

7947

7945

7936

7718

7706

7700

7622

2160

2051

2048, 2050

2015

2014

1956

1920

1889

1810

1720

1680

1671

1663

1569

1541

1528

1438

8646

4375

4256

8911

8910

8908

8845

8545

8544

8541

3871

6024

6017

5973

5840

5779

5742

5666

3686

1436

1435

1434

1433

1432

1431

1429

1325

1304

1188

1186

1165

1154

1133 1136

1068

1053

1017

1013

0917 0738

0690

0689

0580 0639

0576

0572

0569

0509 0429

0428

0427

0380

0244

0145

0050

5114

3963

1632

1048

0655

7097

7594, 7596

2073

8996

0605

4704

3335

4319

4313

4307

0587

4311

0146

0054

4305

4309

4331

2206 4300

8089 4329 0521

7498

8446

8445

0665

4792

3507, 6434

3485

3171

2024 3005

1870

4703

9815

7422

6276

1492
10 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

3. The processes that generated the storms throughout the 

record for each rainfall station do not change with time 

(assumption of stationarity). There are no historical 

changes to the frequency of storms or the distributions of 

depth and duration.

4. The processes that generated the storms throughout the 

year for each rainfall station do not change with time. 

Seasonal differences in storm statistics are ignored.

The mean storm interevent time was computed as the total 

length of record (hours) divided by the number of observed 

storms minus the mean storm duration (hours). The mean storm 

interevent time then was converted to units of days per storm. 

Storm interevent time is a mean or average rate (time per 

storm); however for brevity, hereinafter that rate is expressed 

as time, although the term “interevent” implies the per-storm 

concept. Nine stations have at least one missing interevent time 

value: one in eastern New Mexico, one in Oklahoma, and seven 

in Texas. Whether there is a missing interevent time for the nine 

stations varies with the minimum interevent time. A missing 

interevent time can occur when no rainfall or only one sequence 

(storm) of rainfall is in the data record. An estimate of mean 

storm interevent time requires at least two storms in the time 

series.

The mean storm interevent time can be used in probabilistic models to assess the distribution of storm occurrence. The 

Poisson distribution is suggested to model the distribution of 

the number of storms in a given time period (see “Example 1: 

Estimation of Storm Occurrence” in the section “Example 

Applications”). The exponential distribution is suggested to 

model the distribution of the storm interevent times of successive storms. 

The depth and duration of rainfall for each storm for each 

station were computed. Subsequently, the 1st, 2nd, 10th, 25th, 

50th, 75th, 90th, 98th, and 99th percentiles of storm depth 

and duration were computed for each station as sample size 

permitted. For example, a sample size of 10 storms is insufficient to empirically estimate the 1st, 2nd, 98th, and 99th percentiles. Missing storm depth and duration percentiles are symmetrical about the 50th percentile (median). The authors identify 

missing percentiles rather than extrapolate into the tails of the 

distribution.

The nine selected percentiles characterize the empirical 

distribution of storm depth and duration. Examples of these 

two observed distributions for station 0016 Abilene Regional 

Airport, Tex., are shown in figure 4. The distribution, when 

characterized by the percentiles, is referred to in this report as 

the empirical distribution; the selected percentiles of the distribution also are shown in figure 4.

The observed distributions are graphed on a normal 

probability graph. Hourly rainfall data are reported to the 

nearest 0.01 inch, and duration resolution is reported to the 

nearest hour. The step pattern shown on the left side of the 

curves in figure 4 therefore occurs because of the small resolution of the data in depth and duration. L-moment statistics of the 

two observed distributions were computed and are annotated in 

the figure. L-moment statistics (Hosking, 1990; Stedinger and 

others, 1992; Hosking and Wallis, 1997; Gilchrist, 2000; and 

Dingman, 2002) are used in this paper in lieu of product or central moment statistics. L-moment statistics are mathematically 

described in appendix 1. L-moment statistical analysis of rainfall distributions currently (2006) is an accepted state-of-thepractice technique.

L-moments provide a useful theoretical framework 

because L-moments have well-documented statistical advantages over product moments. Specifically, L-moments are less 

sensitive to outliers in the data, show less bias, are more accurate in small samples, and do not require logarithmic or other 

power transformations of the data. L-moments also provide 

more secure inferences of distributional form than do product 

moments through the use of L-moment (ratio) diagrams. The 

primary concept is that L-moments are exact analogs of product 

moments; that is, the interpretations of L-moments are similar 

to interpretations of the mean, variability, skew, kurtosis, and 

higher measures. Although L-moments are analogs of product 

moments and have similar interpretations, except for the mean, 

they do not have numerical values similar to those of product 

moments.

The L-moments considered in this report are the mean, 

L-scale, coefficient of L-variation (L-CV), L-skew, L-kurtosis, 

and Tau5. L-CV is dimensionless and is defined as the ratio of 

L-scale to the mean. L-skew, L-kurtosis, and Tau5 also are 

dimensionless. The sample L-moments were considered missing values unless five or more storms were observed in the data 

record. Also, the storm duration L-moments were considered 

missing values if all of the storm duration values were equal, 

even though five or more storms were observed. This situation 

occurred for stations where all observed storms were recorded 

as 1-hour long; L-moments cannot be computed if all data values are equal.

Regionwide (eastern New Mexico) or statewide (Oklahoma and Texas) record-length, weighted-average storm depth 

L-moments consisting of the mean depth, L-CV, L-skew, 

L-kurtosis, and Tau5 are listed in table 5 (at end of report). 

Similarly, weighted-average mean storm interevent time and 

storm duration L-moments are listed in table 6 (at end of report). 

The L-moments listed in tables 5 and 6 are called regional 

L-moment statistics. For the record lengths listed in tables 5 and 

6, the record lengths for storm duration (table 6) often are less 

than those for storm depth (table 5) because all storm durations 

were equal—hence no computed L-moments—for one or more 

stations. 

An increase in mean storm interevent time, depth, and 

duration with minimum interevent time is evident in tables 5 

and 6. Some patterns in the L-moments are apparent, such as 

decreasing L-skew of the storm depth distribution with increasing minimum interevent time. Two critical characteristics of the 

tabulated data are (1) the regionwide or statewide mean values 

for the dimensionless L-moments (L-CV, L-skew, L-kurtosis, 

and Tau5) are all of the same general order of magnitude as 

minimum interevent time increases; and (2) the dimensionless 
Analysis of Site-Specific Statistical Characteristics of Hourly Rainfall 11

L-moments for eastern New Mexico, Oklahoma, and Texas are 

of the same general order of magnitude. 

The two characteristics are critical because they are interpreted to indicate that a single dimensionless frequency curve 

can be used to represent the scale (slope) and shape (curvature) 

of the distribution in eastern New Mexico, Oklahoma, and 

Texas, and only an estimate of the mean depth or duration for a 

given location is required to construct a continuous distribution 

of either storm depth or duration. Specifically, the first characteristic implies that the general appearance of a dimensionless 

frequency curve is relatively invariant with minimum interevent 

time. The second characteristic implies that the general appearance of a dimensionless frequency curve is relatively invariant 

with location in the study area. Dimensionless frequency curves 

are discussed and presented in the section “Quantile Functions 

of Storm Depth and Duration;” but first an analysis and discussion of appropriate forms for modeling the distributions of 

storm depth and duration are appropriate.

An L-moment diagram comparing L-skew and L-kurtosis 

of depth and duration for Texas storms defined by the 8-hour 

minimum interevent time is shown in figure 5. Superimposed 

on the diagram are the theoretical relations of L-skew and 

L-kurtosis for six distributions. Hosking (1990), Vogel and 

Fennessey (1993), Hosking and Wallis (1997), and Dingman 

(2002) provide details of L-moment-diagram construction and 

interpretation. L-moment diagrams are used to evaluate the suitability of candidate distributions for modeling the distribution 

of data.

The curves in figure 5, with the exception of the theoretical 

limits of the L-moments, represent three-parameter distributions. (The one-parameter exponential distribution plots as 

a single point—an asterisk in the figure.) The theoretical limits 

of the L-moments are , where and 

are L-skew and L-kurtosis, respectively. Several observations 

about suitable probability distributions in which to model the 

storm depth and storm duration can be made. First, the trajectory of the three-parameter Pearson Type III distribution (not 

the log Pearson Type III distribution familiar to many engineers 

and hydrologists) passes near the centers of the storm depth and 

storm duration data-point clusters. However, the majority of the 

storm depths have slightly larger L-kurtosis than the Pearson 

Type III distribution; this is indicated in figure 5 by the majority 

of open circles above the Pearson Type III line. The L-kurtosis 

values for storm duration are more consistent with the Pearson 

0.25 5τ3

2 ( )τ – 1 4 ≤ τ < 1 3 τ4

Figure 4. Empirical distributions of (A) storm depth and (B) storm duration for 3,331 storm events defined by an 8-hour minimum 

interevent time for station 0016 Abilene Regional Airport, Texas. 

Percentile of depth distribution

Observed depth distribution

DEPTH, IN INCHES

DEPTH, IN MILLIMETERS

0.01 0.254

0.02 0.508

0.03 0.762

0.05 1.27

0.1 2.54

0.2 5.08

0.3 7.62

0.5 12.7

1 25.4

2 50.8

3 76.2

5 127

10 254

NONEXCEEDANCE PROBABILITY, IN PERCENT

DURATION, IN HOURS

1 2 5 10 15 20 30 40 50 60 70 80 85 90 95 98 99 99.5 99.9

0

10

20

30

40

50

60

70

80

0.01 inch

is lower limit

1 hour is lower limit

Mean = 0. 41213 inch

L-scale = .26920 inch

L-CV = .65318

L-skew = .50395

L-kurtosis = .25758

Tau5 = .16298

Mean = 6.2826 hours

L-scale = 3.4227 hours

L-CV = .54479

L-skew = .46635

L-kurtosis = .23435

Tau5 = .15921

Percentile of duration distribution

Observed duration distribution

A

B
12 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Type III distribution than are the L-kurtosis values for storm 

depth. The distribution of storm duration, in other words, is 

more Pearson Type III-like than the distribution of storm depth.

The range of the four-parameter kappa distribution also is 

shown in figure 5. The kappa distribution can accommodate any 

L-skew and L-kurtosis combination between the theoretical 

L-moment limits and the generalized logistic distribution. Thus, 

the kappa distribution can acquire a wide range of values and 

in general fits the L-skew and L-kurtosis of the site-specific 

samples of storm depth and duration.

Adams and Papa (2000) use the exponential distribution to 

model the frequency of storm interevent time, depth, and duration to develop closed-form solutions for various operational 

characteristics of small-watershed BMPs. Wanielista and 

Yousef (1993, p. 52 and 221) suggest, and provide citations 

stating, that the one-parameter exponential or two-parameter 

gamma distributions can be used to model the distributions of 

storm depth and duration. Clarke (1998, p. 56) suggests the 

gamma distribution for modeling the distribution of daily 

rainfall.

The gamma distribution is a special case of the Pearson 

Type III distribution with positive L-skew (Stedinger and 

others, 1992, p. 18.19) and the location parameter of the 

Pearson Type III distribution set to zero. The L-kurtosis and 

L-skew values of the gamma distribution follow the curve 

for the Pearson Type III distribution. However, because the 

gamma distribution is a special case of the Pearson Type III 

Figure 5. L-moment diagram at two scales (A and B) showing relation between L-skew and L-kurtosis of the distributions of storm depth 

and storm duration defined by the 8-hour minimum interevent time and theoretical relations for selected probability distributions. 

L-SKEW, DIMENSIONLESS

L-KURTOSIS, DIMENSIONLESS

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

-0.3

-0.2

0

0.2

0.4

0.6

0.8

L-SKEW, DIMENSIONLESS

L-KURTOSIS, DIMENSIONLESS

0.2 0.3 0.4 0.5 0.6 0.65

0

0.1

0.2

0.3

0.4

0.5

Generalized Logistic

Theoretical limits

of L-moments

Pearson Type III

Generalized Pareto

Generalized Extreme Value

A few data points are outside of theoretical

limits because of very small sample sizes.

L-kurtosis for storm depth

L-kurtosis for storm duration

Range of

kappa distribution

Box represents

boundaries of

graph B below.

Plot symbols and lines

defined in graph B below.

Exponential

Distribution names

B

A
Analysis of Site-Specific Statistical Characteristics of Hourly Rainfall 13

distribution, the gamma distribution is not actually fit to the 

L-skew of the data as a third parameter is not available.

The U.S. Environmental Protection Agency (1986) uses 

the gamma distribution to approximate the distributions of 

storm interevent time, depth, and duration. The exponential 

and gamma distributions are readily implemented. However, 

on the basis of the relations shown in figure 5, the authors 

suggest that the Pearson Type III and kappa distributions 

would be more representative models than the exponential 

or gamma distributions with a modest increase in analytical 

complexity. Furthermore, because the kappa distribution has 

an additional parameter, can fit the L-kurtosis of the data, can 

mimic the Pearson Type III, and is expressible as a quantile 

function (see next section), the kappa distribution is preferred 

by the authors for the distributions of storm depth and duration.

Quantile Functions of Storm Depth and Duration

The exponential, gamma, and kappa distributions are considered for modeling the distribution of storm depth and duration in this report. Both the simpler exponential and gamma distributions have precedence in analytical solutions to BMP 

function. In terms of quality of distribution fit, the analysis in 

the previous section indicates that the kappa distribution is 

preferable. The authors consider all three distributions and compute the parameters of the gamma and kappa distributions to 

facilitate use of this report.

A quantile function, which is the inverse of a cumulative 

distribution function, or frequency curve for a random variable 

 (either storm depth or duration) can be written as

, (1)

where is the variable for nonexceedance probability, ; 

 is the arithmetic mean (first L-moment) of the variable; 

and is the dimensionless quantile function (a dimensionless frequency curve). The dimensionless frequency curve 

represents constant multipliers or frequency factors, which 

are applicable to mean storm depth. Uncertainty in the distribution of the variable is assessed through uncertainty 

in the mean ( ). Uncertainty in the estimation of the mean is 

described in the section “Maps of Mean Storm Interevent 

Time, Depth, and Duration.”

A dimensionless frequency curve is fit to the data using the 

method of L-moments by setting the mean equal to unity and 

L-scale equal to the L-CV. The higher L-moments (L-skew, 

L-kurtosis, Tau5) remain unchanged. (In terms of the product 

moments, a dimensionless distribution is fit to the data by 

setting the mean to unity, the standard deviation equal to the 

coefficient of variation, and all other moments are unchanged.) 

This technique for dimension removal is useful in statistical 

hydrology (Hosking and Wallis, 1997, and references therein).

The quantile function of a dimensionless exponential distribution is

, (2)

where is the dimensionless frequency curve for nonexceedance probability, . There is no parameter to estimate. 

The L-CV of the dimensionless exponential distribution is 0.5 

(Hosking, 1990, p. 112). Values for L-CV for storm depth 

and duration are all greater than 0.5 in tables 5 and 6. As previously discussed, the exponential distribution is extensively 

used by Adams and Papa (2000) in a BMP design context. 

The exponential distribution also is discussed by Ross (1994, 

p. 223–230), Evans and others (2000, p. 77–81), and Bhat and 

Miller (2002, p. 205).

The cumulative distribution function of the dimensionless 

gamma distribution is

, (3)

where is the nonexceedance probability, cumulative percentage, for dimensionless value (see eq. 1); and are 

parameters; and is the gamma function for . There is 

no explicit solution for in terms of . The parameters can be 

computed using the mean and L-CV. Hosking (1996) provides 

algorithms, with the mean of the distribution computed as

, (4)

and the L-CV (L-scale divided by mean, or ) of the distribution computed as 

. (5)

Because the gamma distribution is dimensionless in the context 

here, the following conditions apply: and 

.

Properties of the gamma distribution are listed in Evans 

and others (2000, p. 98–105). This distribution in the context of 

atmospheric statistics and rainfall is described in Wilks (1995, 

p. 86–93) and in the context of rainfall stochastics in Clarke 

(1998). Although much of their work is based on the exponential distribution, Adams and Papa (2000, p. 72–73) also describe 

the gamma distribution. Use of the gamma distribution in the 

context of estimation of BMP function has precedent (U.S. 

Environmental Protection Agency, 1986). 

The quantile function of the dimensionless kappa distribution (Hosking, 1994) is

, (6)

where is the value for a nonexceedance probability, ; 

and , , , and are parameters. The four parameters can 

be computed using the mean (set to unity), L-CV, L-skew, 

and L-kurtosis. However, kappa parameter estimation is not 

X

X F() μ = × x F( )

X F( ) F

μ

x F( )

X F( )

μ

x F( ) = –ln( ) 1 – F

x F( )

F

F x( ) β–θ

Γ θ( ) ----------- t

θ – 1

e

–t ⁄ β

dt 0

x = ∫

F x( )

x θ β

Γ θ() θ

x F

μ θβ =

λ2 ⁄ μ

L-CV βΓ θ( ) + 0.5

π Γθ × μ ( ) × = -----------------------------------

θβ = 1

L-CV = [ ] π Γθ βΓ θ( ) + 0.5 ⁄ [ ] × ( )

x F() ξ α

κ

--- 1 1 Fh –

h -------------- ⎝ ⎠ ⎛ ⎞ κ

= + –

x F( ) F

ξακ h
14 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

manually tractable. Hosking and Wallis (1997, p. 202–204) 

report that there are “no simple expressions for the parameters 

[of the kappa] in terms of the L-moments.” Newton-Raphson 

iteration can be used for parameter estimation and is described 

by Hosking (1996).

For rapid implementation of the results of this report, the 

parameters for both gamma and kappa distributions, which correspond to the L-moments of storm depth and duration (mean 

set to unity and L-scale set to L-CV) listed in tables 5 and 6, 

respectively, have been computed. The parameters for gamma 

and kappa distributions of dimensionless storm depth frequency 

curves are listed in table 7 (at end of report), and similarly, the 

parameters of dimensionless storm duration frequency curves 

are listed in table 8 (at end of report).

The quantile function of the storm depth or duration is 

restored to the dimensionless frequency curves of storm depth 

or duration by multiplying a mean for storm depth or duration 

according to equation 1. For example, from equation 6 the 90th 

percentile of dimensionless storm duration in Texas for a kappa 

distribution model using the 18-hour minimum interevent time 

(parameters from table 8) is

 or 

.

Thus, the 90th-percentile storm duration for a particular location in Texas is 2.72 times the mean storm duration. For this 

report, the mean storm duration for the 18-hour minimum 

interevent time for a location preferably is estimated using the 

mean for a county.

From the previous section, dimensionless frequency 

curves of both storm depth and duration are relatively insensitive to minimum interevent time and to location in the study 

area. This conclusion is based on the fact that, because the 

dimensionless L-moments (L-CV, L-skew, L-kurtosis, and 

Tau5) in tables 5 and 6 are similar, the parameter estimates for 

the dimensionless distributions in tables 7 and 8 for storm depth 

and duration, respectively, also are similar.

To illustrate the distribution similarity for the selected 

minimum interevent times, the dimensionless kappa distribution frequency curves from tables 7 and 8 for storm depth and 

duration are graphed in figure 6. The curves for storm depth 

(fig. 6A) are similar as expected. Likewise, the curves for storm 

duration (fig. 6B) also are similar. In both graphs, the largest 

intercurve differences are on the left side of the distribution; 

however, use of a base-10 log scale for the ordinate accentuates 

the differences. To illustrate the spatial insensitivity of the 

dimensionless frequency curves, the storm depth and storm 

duration curves for the 24-hour minimum interevent time for 

eastern New Mexico, Oklahoma, and Texas are shown in 

figure 7. It is evident from the figure that the curves for storm 

depth (gray lines) and storm duration (black lines) are fairly 

similar. Further, the shape of the depth and duration curves are 

comparable, although there is no apparent reason to expect such 

similarity between dimensionless storm depth and storm duration distributions.

A comparison of exponential, gamma, and kappa distributions of storm depth for 24-hour minimum interevent time for 

Texas indicates the differences between the distributions. There 

is no parameter of the dimensionless exponential distribution. 

The exponential and gamma distributions have precedence as 

models of storm depth and storm duration distributions in BMP 

design. The quantile function of a dimensionless exponential 

distribution is defined in equation 2. The cumulative distribution function of the dimensionless gamma distribution (parameters from table 7) is

. (7)

The quantile function of the dimensionless kappa distribution 

(parameters from table 7) is

. (8)

These three distributions are shown in figure 8. In figure 

8A, the distributions are graphed with a linear y-axis scale; 

whereas in figure 8B, the distributions are graphed with a base10 log y-axis scale. The kappa distribution bends upward more 

steeply than the other distributions (see right side of fig. 8A); 

this demonstrates that the kappa distribution is capable of producing larger “outliers” of storm depth, which are known to 

occur in rainfall data. The exponential distribution is the flattest 

of the three distributions. The flattening of the kappa distribution on the left side (fig. 8B) shows that the kappa distribution 

has a lower limit of about 0.09. Thus, if the mean storm depth is 

about 0.5 inch, the lower limit is about 0.045 inch (0.09 multiplied by 0.5). The lower limit of the exponential and gamma 

distributions is zero. The resolution of the data is 0.01 inch; 

therefore, the minimum storm depth recorded is 0.01 inch. The 

left-tail differences (nonexceedance probability less than about 

0.05) between the distributions become substantial; the choice 

of distribution thus becomes more problem-specific.

The association between storm depth and storm duration 

is important. An example of the association for station 0016 

Abilene Regional Airport, Tex., is shown in figure 9. Clearly, 

the larger storm depths are associated with storms of longer 

duration. However, no discernible relation between depth and 

duration is evident for durations between 1 and about 20 hours, 

and there is considerable variability in depth for a given duration. Similar assessments were made for a geographically disperse subset of stations (results not reported here).

The proportional association between large storm depths 

and durations implies that storm depth and duration are weakly 

dependent random variables. Thus, conditional probability 

theory—depth is conditional to duration—is required when 

analyzing the joint probability of storm depth and duration. 

However, Adams and Papa (2000, p. 120–121, and references 

therein) comment extensively on the dependence of storm depth 

and duration in the context of small-watershed drainage-design 

x( ) 0.90 – 2.073 2.224

0.0896 ---------------- 1 1 0.902.794 –

2.794 ---------------------------- ⎝ ⎠ ⎛ ⎞ 0.0896

= + –

x( ) 0.90 = 2.72

F x( ) 1.579–0.6333

Γ( ) 0.6333 --------------------------- t

0.6333 1 – e–t ⁄ 1.579dt 0

x = ∫

x F( ) – 0.5790 1.115

–0.1359 ------------------- 1 1 F1.747 –

1.747 --------------------- ⎝ ⎠ ⎛ ⎞ –0.1359

= + –
Analysis of Site-Specific Statistical Characteristics of Hourly Rainfall 15

Figure 6. Dimensionless kappa distribution frequency curves for (A) storm depth and (B) storm duration for the selected minimum 

interevent times in Texas.

12 hours

DIMENSIONLES STORM DEPTH

0.04

0.05

0.1

0.2

0.5

1

2

5

10

12

NONEXCEEDANCE PROBABILITY, IN PERCENT

DIMENSIONLESS STORM DURATION

0.1 0.5 1 2 5 10 15 20 30 40 50 60 70 80 85 90 95 98 99 99.5 99.9

0.02

0.05

0.1

0.2

0.5

1

2

5

10

6 hours

8 hours

18 hours

24 hours

48 hours

72 hours

Number of hours indicates minimum 

interevent time, in same order as

curves. Arrows indicate direction of 

increasing interval.

12 hours

6 hours

8 hours

18 hours

24 hours

48 hours

72 hours

Number of hours indicates minimum

interevent time, in same order as

curves. Arrows indicate direction of

increasing interval.

Dimension of storm depth obtained by

multiplying ordinate or y-axis by mean

storm depth.

Dimension of storm duration obtained by 

storm duration.

multiplying ordinate or y-axis by mean 

A

B
16 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

practices including BMPs. For many applications, such as the 

example applications in this report, it often is assumed that the 

distributions of storm depth and duration are independent. No 

further analysis of the relation between storm depth and duration is provided in this report.

Statistical Characteristics of Storm 

Interevent Time, Depth, and Duration 

Twenty-one maps show mean storm interevent time, mean 

storm depth, and mean storm duration by county for the study 

area. For each of the three statistics, there is one map for each 

of the seven minimum interevent times. Important summary 

and diagnostic statistics for the maps also are tabulated. Nine 

tables (three each for eastern New Mexico, Oklahoma, and 

Texas) list the three statistics by county for the seven minimum 

mean interevent times. Before introduction of the maps and 

tables, a description of the regionalization approach is informative. Regional analysis is important because storm statistics are 

highly variable in space and time; many rainfall stations have 

short records, which implies more error for estimates of sitespecific rainfall statistics. The regional analysis provides a 

method to estimate more reliable statistics.

Regionalization of Storm Statistics

Regionalization in this report is a two-step process. First, a 

spatial analysis, or neighborhood smoothing, of the mean storm 

statistics for a particular minimum interevent time, such as the 

mean storm depth for storms defined by the 8-hour minimum 

Figure 7. Dimensionless kappa distribution frequency curves for storm depth and storm duration for 24-hour minimum interevent time 

for eastern New Mexico, Oklahoma, and Texas.

NONEXCEEDANCE PROBABILITY, IN PERCENT 

DIMENSIONLESS STORM DEPTH OR DURATION

0.1 0.5 1 2 5 10 15 20 30 40 50 60 70 80 85 90 95 98 99 99.5 99.9

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Dimensionless frequency curve of

 storm depth for eastern New Mexico

Dimensionless frequency curve of

 storm depth of Oklahoma 

Dimensionless frequency curve of

 storm depth for Texas 

Dimensionless frequency curve of

 storm duration for eastern New Mexico

Dimensionless frequency curve of

 storm duration for Oklahoma 

Dimensionless frequency curve of

 storm duration for Texas 

EXPLANATION

24-hour minimum interevent time

Dimension of storm depth or storm duration 

obtained by multiplying ordinate or y-axis by

mean storm depth or mean storm duration. Curves for storm depth

Curves for storm duration
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 17

interevent time, is done for each station in the study area. 

Second, geostatistical analysis of the smoothed statistics for 

the stations is done to produce a continuously varying map of 

the statistic. The map is used to estimate countywide means for 

the mean storm interevent time, mean storm depth, and mean 

storm duration.

Neighborhood smoothing is the process by which a particular statistic at a particular station is combined, or pooled 

together, with the corresponding statistics at surrounding stations to develop a more reliable estimate of the statistic for each 

particular station than can be derived from the data for the 

station alone. In other words, the neighborhood of stations 

surrounding a particular station contains more information—

more hours of record—about the characteristics of rainfall in 

that area than the particular station.

Neighborhood smoothing for each station consisted of 

computing the smoothed statistic through a weighted average 

of the statistic for the station and the statistics for the four 

nearest stations. Five stations thus constitute the neighborhood. 

Record length, as measured by the total number of hours of rainfall record, provided the weights. Occasionally a value for a 

particular statistic, such as the mean storm duration, was missing for one or more of the neighboring stations. When that 

m occurred, the station with a missing value was dropped from the 

Figure 8. Dimensionless exponential gamma and kappa distributions of storm depth for 24-hour minimum interevent time in Texas, 

graphed with (A) a linear y-axis scale and (B) a base-10 log y-axis scale. DIMENSIONLESS STORM DEPTH

0

2

4

6

8

10

12

14

NONEXCEEDANCE PROBABILITY, IN PERCENT

DIMENSIONLESS STORM DEPTH

0.1 0.5 1 2 5 10 15 20 30 40 50 60 70 80 85 90 95 98 99 99.5 99.9

0.00001

0.00002

0.0001

0.0002

0.001

0.002

0.01

0.02

0.1

0.2

1

2

10

14

Dimensionless exponential distribution

Dimensionless gamma distribution

Dimensionless kappa distribution—preferred distribution

EXPLANATION

A

B
18 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

neighborhood; no additional stations were sought. Thus, the 

number of stations in the neighborhood was reduced by the 

number of stations with missing values. No cases occurred in 

which an entire neighborhood had missing values; the minimum number of stations in a neighborhood was two.

Smoothing reduces the point-to-point variability of a particular statistic through the incorporation of record length and 

facilitates more reliable regionalization of the statistic. Smoothing is considered necessary because of large differences in 

record lengths. The authors’ decision not to remove stations 

from the regional analysis because of short record length 

resulted in a trade-off: Additional spatial information was 

gained at the expense of increased station-to-station variability.

After smoothing, regionalization of storm statistics 

included geostatistical-based mapping using the method of 

kriging (Isaaks and Srivastava, 1989). Kriging was done using 

a spherical model of the semivariogram. That semivariogram 

model was selected on the basis of intermediate spatial analysis 

(not presented here) as part of the kriging operation in an integrated software system (Environmental Systems Research 

Institute, Inc., 2002). The semivariogram was automatically fitted by the software. The fit was verified through the graphical 

interface provided by the integrated software system. Other 

semivariogram models were evaluated in the intermediate analysis; most of the maps are relatively insensitive to the choice of 

semivariogram model. The neighborhood for the kriging operation used a search radius of 12 stations in conjunction with a 

circular search method. The output cell size for the kriging 

operation was 4,799.55 meters, which translates to a 263-row 

by 251-column orthogonal grid encompassing the study area. 

The grid then was clipped to the external boundaries of the 

study area to form a grid map.

Subsequent to regionalization of the storm statistics, the 

grid maps of the storm statistics were evaluated through computation of selected summary and diagnostic statistics. The evaluation documents the error of the grid maps to facilitate assessment of the uncertainty in the storm statistic regionalization.

The summary and diagnostic statistics for each grid map 

were computed. These statistics are weighted values based 

on record length. Summary statistics include the number of 

stations without missing values for each minimum interevent 

time, the mean of a particular storm statistic (mean storm interevent time, mean storm depth, and mean storm duration) for the 

study area, and the weighted standard deviation (wSD) of the 

particular statistic for the study area. Diagnostic statistics computed are weighted mean bias of the grid map, root-weightedmean-square error (RwMSE) of the grid map, and the percentage difference between wSD and RwMSE of the grid map. The 

Figure 9. Storm depth and storm duration for 3,331 storm events defined by an 8-hour minimum interevent time for station 0016 Abilene 

Regional Airport, Texas.

DURATION, IN HOURS

DEPTH, IN INCHES

DEPTH, IN MILLIMETERS

1 2 3 4 5 6 7 8 10 20 30 40 50 60 80 100

0.01 0.254

0.02 0.508

0.03 0.762

0.05 1.27

0.08 2.032

0.1 2.54

0.2 5.08

0.3 7.62

0.5 12.7

0.8 20.32

1 25.4

2 50.8

3 76.2

5 127

8 203.2

10 254
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 19

mean bias is the weighted average of the station residuals. A 

residual is defined as the value of the observed statistic at each 

station minus the statistic predicted by the grid map. The mean 

biases are expected to be about zero. The RwMSE is the square 

root of the mean square difference of the observed statistic 

minus the statistic predicted using the grid map. Percentage difference is defined as 100×(RwMSE-wSD)/wSD. Negative percentage difference implies that the grid map provides a more 

accurate estimate of a particular statistic than the weighted 

mean of the statistic for the study area.

Another component of the evaluation was an analysis of 

the spatial variation of the station residuals. The residuals 

should have little or no spatial dependency; for example, a 

residual map of the study area should show no systematic 

change from one side to another. The results of the residual 

analysis for the statistics (not reported here) indicated essentially no spatial dependency.

Finally, to provide consistency between graphical and tabular presentation of results, the means of storm interevent time, 

depth, and duration were computed using the grid map of each 

statistic and the spatial extent of each county. These means were 

used to produce the maps and associated tables described in the 

next two sections.

Maps of Mean Storm Interevent Time, Depth, and 

Duration

Maps depicting mean storm interevent times by county for 

each of the seven minimum interevent times are presented in 

figures 10–16. Maps depicting ranges of mean storm depth by 

county and mean storm duration by county are presented in figures 17–23 and figures 24–30, respectively.

Summary statistics and diagnostic statistics for the mean 

storm interevent time maps are listed in table 9 (at end of 

report). The summary statistics and diagnostic statistics for the 

storm depth and storm duration maps are listed in tables 10 and 

11 (at end of report), respectively. The mean biases are approximately zero, as expected. 

Comparison of the percentage differences between wSD 

and RwMSE in tables 9–11 shows that the differences are 

largest for mean storm depth and smallest for mean storm interevent time, which indicates that the mean storm depth maps 

explain comparatively more variability in storm depth across 

the study area than the mean storm interevent time maps or 

mean storm duration maps. Hence, relatively less uncertainty is 

associated with the storm depth maps than with the maps of the 

other two statistics.

The mean storm interevent time maps (figs. 10–16) show 

considerable east-to-west difference in the length of time 

between successive storms for a given minimum interevent 

time. Storms are most frequent in eastern Texas and least frequent in far western Texas. Storms along the Rio Grande in an 

easterly direction from about 101° longitude are less frequent 

than the east-west location of that segment of the Rio Grande 

might indicate. A region of relatively more frequent storms is in 

the northeastern Texas Panhandle. Storms also are relatively 

more frequent along the northwestern side of the eastern New 

Mexico region. In general, similar patterns are evident among 

the storm interevent time maps as minimum interevent time 

changes.

From the storm depth maps (figs. 17–23), there is a clear 

tendency for smaller storm depths to occur in the western part 

of the study area. The changes in storm depth are influenced far 

more by east-west location than north-south location. A notable 

exception is that changes in storm depth in southern Texas 

(east-west along the Rio Grande) are relatively smaller than 

east-west changes across other parts of the study area. Another 

observation about the storm depth maps is that the patterns vary 

more smoothly than the patterns for the storm interevent time or 

storm duration maps; this is consistent with the greater percentage difference between wSD and RwMSE (table 10) for the 

storm depth maps. In general, similar patterns among the storm 

depth maps is evident as minimum interevent time changes.

The storm duration maps (figs. 24–30) show a tendency 

for the shortest-duration storms to be in western Texas; however, much more variation is in the storm duration maps than in 

the storm depth maps. In general, similar patterns among the 

storm duration maps is evident as minimum interevent time 

changes; however, as the minimum interevent time increases, 

the region of highest mean storm duration becomes more spatially restricted to the southeastern corner of Texas. A region 

of locally large storm duration is centered on Hays County, Tex. 

(30° latitude and 98° longitude); this region of large storm 

duration persists with changing minimum interevent times. 

Asquith (1998, figs. 33–37) indicates that the scale parameter 

(an expression of variability) of the generalized extreme-value 

distribution for rainfall annual maxima for durations of 1 to 

7 days shows a region of locally increased value in Central 

Texas. The two local regions—that of large storm duration 

in this report and of increased scale parameter in Asquith 

(1998)—are approximately coincident.

Tables of Mean Storm Interevent Time, Depth, and 

Duration

Tabulated mean storm depth and duration could be used 

with the dimensionless frequency curves discussed in the 

section “Quantile Functions of Storm Depth and Duration” in 

this report. The mean storm interevent time, depth, and duration 

by county for eastern New Mexico are listed in tables 12, 13, 

and 14 (at end of report), respectively; for Oklahoma in tables 

15, 16, and 17 (at end of report), respectively; and for Texas in 

tables 18, 19, and 20 (at end of report), respectively. Because of 

the large database analyzed, the regionalization of storm statistics as represented by the dimensionless kappa distribution of 

storm depth and duration (table 7) and the tables of mean storm 

interevent time, depth, and duration (tables 12–20) are preferable to other methods described here for statistical characterization of storms in eastern New Mexico, Oklahoma, and Texas. 
20 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 10. Mean storm interevent time defined by 6-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in days

4.2–6.0

6.1–8.0

8.1–10.0

10.1–12.0

12.1–14.0

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 21

Figure 11. Mean storm interevent time defined by 8-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in days

4.5–6.5

6.6–8.5

8.6–10.5

10.6–12.5

12.6–15.0

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
22 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 12. Mean storm interevent time defined by 12-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in days

4.9–7.0

7.1–9.0

9.1–11.0

11.1–13.0

13.1–15.3

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 23

Figure 13. Mean storm interevent time defined by 18-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in days

5.4–7.5

7.6–9.5

9.6–11.5

11.6–13.5

13.6–16.4

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
24 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 14. Mean storm interevent time defined by 24-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in days

6.1–8.5

8.6–11.0

11.1–13.5

13.6–16.0

16.1–19.4

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 25

Figure 15. Mean storm interevent time defined by 48-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in days

7.5–10.0

10.1–13.0

13.1–16.0

16.1–19.0

19.1–22.0

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
26 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 16. Mean storm interevent time defined by 72-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in days

8.7–12.0

12.1–15.0

15.1–18.0

18.1–21.0

21.1–23.6

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 27

Figure 17. Mean storm depth defined by 6-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in inches

0.21–0.30

0.31–0.40

0.41–0.50

0.51–0.60

0.61–0.70

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
28 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 18. Mean storm depth defined by 8-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in inches

0.22–0.30

0.31–0.40

0.41–0.50

0.51–0.60

0.61–0.70

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 29

Figure 19. Mean storm depth defined by 12-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in inches

0.24–0.34

0.35–0.44

0.45–0.54

0.55–0.64

0.65–0.75

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
30 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 20. Mean storm depth defined by 18-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in inches

0.25–0.42

0.43–0.52

0.53–0.62

0.63–0.72

0.73–0.82

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 31

Figure 21. Mean storm depth defined by 24-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in inches

0.27–0.40

0.41–0.53

0.54–0.66

0.67–0.79

0.80–0.92

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
32 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 22. Mean storm depth defined by 48-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in inches

0.33–0.50

0.51–0.67

0.68–0.84

0.85–1.01

1.02–1.18

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 33

Figure 23. Mean storm depth defined by 72-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in inches

0.4–0.6

0.7–0.8

0.9–1.0

1.1–1.2

1.3–1.5

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
34 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 24. Mean storm duration defined by 6-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in hours

3.6–4.0

4.1–4.5

4.6–5.0

5.1–5.5

5.6–6.2

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 35

Figure 25. Mean storm duration defined by 8-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in hours

4.0–4.6

4.7–5.2

5.3–5.8

5.9–6.4

6.5–7.0

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
36 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 26. Mean storm duration defined by 12-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in hours

4.8–5.6

5.7–6.4

6.5–7.2

7.3–8.0

8.1–8.5

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 37

Figure 27. Mean storm duration defined by 18-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in hours

6.4–7.4

7.5–8.4

8.5–9.4

9.5–10.4

10.5–11.4

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
38 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 28. Mean storm duration defined by 24-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in hours

8.6–10.0

10.1–11.5

11.6–13.0

13.1–14.5

14.6–16.0

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
Statistical Characteristics of Storm Interevent Time, Depth, and Duration 39

Figure 29. Mean storm duration defined by 48-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

0 100 200 MILES

0 100 200 KILOMETERS

EXPLANATION

Range, in hours

15.1–18.5

18.6–21.5

21.6–24.5

24.6–27.5

27.6–31.0

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
40 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Figure 30. Mean storm duration defined by 72-hour minimum interevent time in eastern New Mexico, Oklahoma, and Texas.

EXPLANATION

Range, in hours

22.7–29.0

29.1–36.0

36.1–43.0

43.1–50.0

50.1–57.0

0 100 200 MILES

0 100 200 KILOMETERS

95o 96o

30o

29o

28o

27o

26o

31o

94o

97o 98o 99o 100o 101o 102 103 o 104 o o 106o 105o

36o

35o

34o

33o

32o

37o
Example Applications 41

Example Applications

The three statistical components that describe storms are 

storm interevent time, distribution of storm depth, and distribution of storm duration. The components facilitate a wide range 

of sophisticated BMP function and other analyses (for example, 

Wanielista and Yousef, 1993; and Adams and Papa, 2000). In 

this section are 10 example problems and solutions that illustrate applications of the statistics presented here; this section is 

intended as a guide for general application of this report. Storm 

statistics for hourly rainfall stations in eastern New Mexico, 

Oklahoma, and Texas are listed in appendixes 2, 3, and 4, 

respectively. 

Before the example problems and solutions are presented, 

additional discussion to further clarify the intent of this section 

is warranted. The comprehensive statistical characterization of 

storms in this report facilitates application of the results to a 

diverse group of problems. The setup, computation, and interpretation of the solutions to the problems presented here ranges 

from simple to complex.

Examples in which a star (Ë) precedes the problem statement (examples 4, 5, and 10) are sufficiently complex that complete background, context, or steps of the solution are beyond 

the scope of this report. It is anticipated that most design engineers and decision makers will be more informed by the less 

complex (no star) problems. For the more complex problems, 

integrated mathematical or statistical software packages or custom computer programs are required for some solution steps. 

The intended audience for the more complex problems are those 

with considerable knowledge of univariate statistical theory, 

magnitude and frequency analysis, and probabilistic numerical 

modeling of rainfall processes. Recent publications useful in the 

context of these problems are Stedinger and others (1992), 

Wanielista and Yousef (1993), Wilks (1995), Hosking and 

Wallis (1997), Clarke (1998), Adams and Papa (2000), Evans 

and others (2000), and Bhat and Miller (2002).

Two classes of approach for application of the storm 

statistics are possible: site-specific and regional. The sitespecific approach uses storm statistics recorded from a single 

station independent of the statistics from nearby stations. 

In practice, the site-specific approach typically is limited to 

long-record stations. It is not unusual for site-specific statistics 

from long-record stations to be transferred to a nearby ungaged 

site. The regional approach differs from the site-specific 

approach in that statistics from numerous neighboring stations 

are combined or regionalized to produce alternative and often 

more reliable estimates for storm statistics than possible from 

the site-specific data record. The statistics by county (tables 

12–20) and the dimensionless frequency curves (table 7) are 

products of the regional approach. Both approaches are demonstrated here.

Site-Specific Approach

Example 1: Estimation of Storm Occurrence

PROBLEM: The 75th percentile of the number of storms 

in a 1-year time interval for an ungaged site near Briggs, 

Tex. (fig. 3C), is needed for construction scheduling and planning because construction activities stop when storms occur. 

Because no time scale for a watershed is specified, a minimum 

interevent time of 8 hours is assumed. It is useful to assume that 

storm occurrence follows a Poisson process (Clarke, 1998; Bhat 

and Miller, 2002, and references therein).

SOLUTION: Station 1068 Briggs, Tex., is the nearest 

long-term station. The station has 59 years of record. From 

appendix 4–1.2, this station has recorded 2,882 storms in 

512,393 hours. Therefore, the Poisson parameter ( ) is 

7.408 days ([512,393 hours/2,882 storms]×day/24 hours). 

The cumulative distribution function of the Poisson 

distribution is

, (9)

where is the cumulative probability for events within 

a -day time period, and is in days.

Because the 75th percentile ( ) is needed, the 

number of storms in a 365-day time period can be solved by setting the left side of the equation to 0.75 and solving for the integer that best satisfies the equality. The integers that best satisfy the equality are 53 at an of 0.732 and 54 at an of 0.775. 

The 75th percentile of the number of storms per year is about 

54 by rounding to the highest integer. Therefore, 54 or fewer 

storms can be anticipated with a cumulative probability of about 

0.75. The probability of exactly 54 storms in 1 year is only 

about 0.043.

Example 2: Estimation of Interevent Times of Storms

PROBLEM: As part of a numerical soil-zone study in the 

Amarillo, Tex. (fig. 3A) area, a soil scientist is interested in simulating interevent times for storms. The 24-hour minimum 

interevent time will be used. The mean interevent time for the 

study is assumed equal to the mean interevent time at station 

0211 Amarillo Weather Service Office Airport, Tex.

SOLUTION: Station 0211 has an observed mean interevent time of 7.60 days (appendix 4–1.5). For the simulation, 

the scientist assumes that storms follow a Poisson process 

(Clarke, 1998; Bhat and Miller, 2002, and references therein). 

The exponential distribution describes the cumulative distribution of the interevent times of a Poisson process, with 

an adjustment for the minimum interevent time (Adams and 

Λ

Fn( ) T

Fn( ) T e

–T ⁄ ( ) Λ ( ) T ⁄ Λ i

i! -----------------

i = 0

n

= ∑

Fn( ) T n

T Λ

F = 0.75

n

F F
42 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Papa, 2000, p. 74). The cumulative distribution of storm interevent times is

 for , (10)

where is the cumulative or nonexceedance probability for 

the interevent time, and is the minimum interevent 

time in days. The parameter is the mean interevent time in 

days. The inclusion of the minimum interevent time adjusts the 

exponential distribution because interevent times less than the 

minimum interevent time are not possible. Equation 10 can be 

solved in terms of . The resulting equation is the quantile 

function of interevent time and is

 for . (11)

When random numbers between 0 and 1 are substituted for 

 in equation 11 with equal to 7.60 days and equal to 

1 day (24 hours), a random sequence of interevent times is generated. Five simulations based on a random sequence of five 

interevent times are listed in table 21 (at end of report). The 

mean of the simulations is 7.19 days—the mean approaches 

7.60 as the number of simulations becomes large.

It is illustrative to compare the 7.60 days mean interevent 

time to the results of Asquith and Roussel (2003, fig. 4). 

Asquith and Roussel (2003, fig. 4) shows that the interoccurrence of daily rainfall (not hourly) of 0.05 inch or more is, on 

average about 8 days for the Amarillo area. The two interevent 

times are of the same order as expected, but the values should 

not be equal.

Example 3: Estimation of the Empirical Distribution of 

Storm Depth

PROBLEM: The 98th-percentile storm from the empirical 

distribution of storm depth for a site very close to station 4311 

Houston Alief, Tex. (fig. 3C) (62 years of record), is required 

by an environmental consulting firm working on a project proposal in a watershed where BMPs are to have a 24-hour drawdown time. Hence, the statistics of storms with a 24-hour minimum interevent time are appropriate.

SOLUTION: The 98th percentile and other selected percentiles of storm depth are listed in appendix 4–4.5 and in column two of table 22 (at end of report). The 98th-percentile 

storm has a depth of 4.55 inches. (Column three of table 22 is a 

component of example 4.) The median storm depth is 0.44 inch 

and the interquartile range is 1.03 inches (1.18 minus 0.15) for 

station 4311.

Example 4: Estimation of the Continuous Distribution of 

Storm Depth

ËPROBLEM: As part of a city ordinance, a BMP for a 

small urban watershed in the city is believed to accommodate 

90 percent of all storms when 2 inches or less of runoff is captured. The temporal distribution of runoff (outflow rate) from 

the BMP is to be ignored. Engineering firm A is to design a 

BMP for a given watershed in which the ordinance applies. The 

ordinance states that the BMP is to have a 24-hour drawdown 

time; hence an analysis of storms with a 24-hour minimum 

interevent time is required. Engineering firm A is questioning 

whether a 2-inch design runoff would accommodate the 90thpercentile storm as reflected by the ordinance or instead would 

accommodate approximately the 95th-percentile storm. Thus, 

firm A believes that the ordinance might contribute to overdesign of BMPs. The scientific credibility of the ordinance 

hence is in question; the results of this report can be used to 

evaluate the ordinance. Assume, for the purpose of illustration, 

that near the planned BMP is long-term station 4311 Houston 

Alief, Tex. (station considered in example 3).

SOLUTION: The first step toward the solution is to compute the depth of rainfall that produces 2 inches of runoff on the 

watershed. A simple runoff model (Adams and Papa, 2000, 

p. 121, eq. 6.28) used for illustration is

, (12)

where is runoff in inches, is the runoff coefficient, is 

rainfall in inches, and is depression storage or an initial 

abstraction in inches. It is widely accepted that a typical initial 

abstraction for the watershed is 0.25 inch and the runoff coefficient is about 0.8. Upon variable substitution, the rainfall producing 2 inches of runoff is 2.75 inches.

The L-moments of storm depth for a 24-hour minimum 

interevent time for this station are 0.88849 inch, 0.52954 inch, 

0.45778, and 0.23879 for the mean, L-scale, L-skew, and 

L-kurtosis, respectively (appendix 4–2.5). A four-parameter 

kappa distribution (see section “Quantile Functions of Storm 

Depth and Duration” in this report) can be fit by use of these 

L-moments using an algorithm such as in Hosking (1996) (data 

not shown in this report). The fitted kappa distribution corresponding to these L-moments is

, (13)

where is storm depth and is nonexceedance probability. 

Substituting 2.75 inches for the left side of the equation and 

solving the equation for yields 0.932 or 93.2 percent. In 

other words, a rainfall depth of 2.75 inches is about the 93rdpercentile storm depth. Therefore, a statistical estimate of the 

storm percentage associated with 2 inches of runoff for the 

watershed is 3 percentage points larger than 90 percent. The 

90th percentile for the distribution ( ) is 2.24 inches.

Thus, the ordinance reflects a depth of 2.75 inches; 

whereas, the statistical estimate of the 90th-percentile storm 

is 2.24 inches using the Hosking (1996) algorithm. Therefore, 

the question of engineering firm A that a storm associated with 

2 inches of runoff would accommodate approximately the 

95th-percentile storm is questionable. The depth for the 95thpercentile storm is 3.18 inches by substituting into 

F x( ) 1 e

–1 MIT x –

Λ – MIT -------------------- ⎝ ⎠ ⎛ ⎞

= – x MIT ≥

F

x MIT

Λ

x

x F( ) = MIT–( ) Λ – MIT ln( ) 1 – F x MIT ≥

F Λ MIT

R φ P SD = ( ) –

R φ P

SD

P F( ) – 0.4990 1.028

–0.1117 + 1 ------------------- 1 F1.650 ( ) –

1.650 --------------------------

–0.1117

–

⎩ ⎭ ⎨ ⎬ ⎧ ⎫ =

P F

F

F = 0.90

F = 0.95
Example Applications 43

equation 13. The runoff from the 95th-percentile storm is about 

2.34 inches from equation 12.

To further illustrate the application of this report, from 

equation 13 the quantiles for each of the selected percentiles or 

nonexceedance probabilities (0.01, 0.02, 0.10, 0.25, 0.50, 0.75, 

0.90, 0.98, and 0.99) are listed in column three of table 22. As 

seen in the table, the empirical storm depth percentiles and 

storm depth percentiles from the kappa distribution are similar 

for each percentile as expected.

Example 5: Statistical Simulation of Rainfall Intensity

ËPROBLEM: An analyst wants to construct synthetic 

temporal distributions of average rainfall intensity for station 

4311 Houston Alief, Tex., to investigate the influence of rainfall 

rates on the spill volume of a numerical model of a particular 

BMP design.

SOLUTION: The kappa distribution of storm depth 

for nonexceedance probability is given as equation 13 in 

example 4. The L-moments of storm duration for the station 

are listed in appendix 4–3.5. The mean, L-scale, L-skew, and 

L-kurtosis are 13.434 hours, 8.1389 hours, 0.46763, and 

0.20844, respectively. Fitting a kappa distribution to these 

L-moments using the Hosking (1996) algorithm (data not 

shown in this report) results in the following equation for the 

storm duration in terms of nonexceedance probability, :

. (14)

It is convenient to assume that storm depth and duration 

are independent random variables, which is supported by the 

scattered relation in figure 9. Under this assumption, storm 

depth is simulated by generating a random number between 0 

and 1, substituting this value for , and solving equation 13 for 

. A similar process for storm duration is done with the generation of a new random number between 0 and 1, substituting 

this value for , and solving equation 14 for . This process is 

best illustrated by example. A random number of 0.78687 is 

generated for storm depth and results in a depth of 1.33 inches 

using equation 13. Another random number of 0.040703 is generated for storm duration and results in a duration of 1.01 hours 

using equation 14. The average rainfall intensity for this storm 

thus is 1.33 divided by 1.01 or 1.32 inches per hour.

Regional Approach by County

Example 6: Regional Estimation of Storm Occurrence

PROBLEM: The storm interevent time for storms defined 

by a 40-hour minimum interevent time in Randall County, Tex. 

(fig. 3A), is desired. The storm interevent time is a component 

of a design. The maps in this report can be used for estimation.

SOLUTION: The storm interevent time for a 40-hour minimum interevent time is not a statistic provided in this report. 

However, 24-hour and 48-hour minimum interevent times 

bracket 40 hours. At the approximate center of Randall County, 

the mean storm interevent time for the 24-hour minimum interevent time is about 10.5 days (table 18), and that for the 48-hour 

minimum interevent time is about 12.4 days (table 18). Linear 

interpolation can be used to estimate the mean storm interevent 

time for the 40-hour minimum interevent time; the result is 

about 11.8 days. 

Example 7: Computation of the Storm-Captured 

Percentage

PROBLEM: A local ordinance for a county in Texas 

requires that a BMP capture a 1.5-inch storm and release this 

storm over a 24-hour period. The county has a mean storm 

depth of 0.750 inch (a randomly selected value from table 19). 

An estimate of the percentage of storms that will be captured 

under the ordinance is needed.

SOLUTION: The dimensionless storm depth frequency 

curve using the kappa distribution (eq. 6; table 7) for a 24-hour 

minimum interevent time in Texas is

, (15)

where is the dimensionless multiplier (a frequency 

factor) for nonexceedance probability . The storm depth 

distribution is the mean depth multiplied by the dimensionless 

distribution or

, (16)

where is the storm depth for nonexceedance probability 

. The left side of the equation is set to 1.5 inches, and the 

storm percentage can be estimated by solving the resulting 

equation for . The equation is

. (17)

The satisfying the equality is 0.859. Thus, under the ordinance, about 86 percent of all storms will be captured by the 

BMP.

Example 8: Regional Estimation of the Empirical 

Distribution of Storm Depth

PROBLEM: A BMP is to be built with a 36-hour drawdown time in Randall County, Tex. (fig. 3A). The empirical distribution, specifically the 50th, 75th, 90th, 98th, and 99th percentiles of storm depth, are needed as part of the design process. 

P

F

D F

D F( ) – 23.466 28.137

0.093897 ---------------------- ⎝ ⎠ ⎛ ⎞ = +

1 1 F2.4775 ( ) –

2.4775 ----------------------------

0.093897

–

⎩ ⎭ ⎨ ⎬ ⎧ ⎫

F

P

F D

x F( ) – 0.5790 1.115

–0.1359 ------------------- 1 1 F1.747 –

1.747 --------------------- ⎝ ⎠ ⎛ ⎞ –0.1359

= + –

x F( )

F

P F( ) = 0.750 × x F( )

P F( )

F

F

1.5

0.75 ---------- 0.5790 – 1.115–0.1359 ------------------- 1 1 F1.747 –

1.747 --------------------- ⎝ ⎠ ⎛ ⎞ –0.1359

= + –

F
44 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

The mean storm depths for Randall County and dimensionless 

storm depth frequency curves are to be used.

SOLUTION: Storm depth percentiles for a 36-hour minimum interevent time are not statistics provided in this report. 

However, 24-hour and 48-hour minimum interevent times 

bracket 36 hours. The mean storm depths for the county 

(table 19) are 0.488 inch (24-hour minimum interevent time) 

and 0.597 inch (48-hour minimum interevent time). The dimensionless storm depth frequency factors for the 24-hour minimum interevent time using the kappa distribution (eq. 6; 

table 7) are computed from

. (18)

The dimensionless storm depth frequency factors for the 

48-hour minimum interevent time using the kappa distribution 

(eq. 6; table 7) are computed from

. (19)

The frequency factors for the 50th, 75th, 90th, 98th, and 

99th percentiles of storm depth computed from equations 18 

and 19 are listed in columns 2 and 5 of table 23 (at end of report) 

for the 24-hour and 48-hour minimum interevent time, respectively. The storm depths are computed by multiplying the 

means by the frequency factors. The resulting storm depths are 

listed in columns 3 and 6 of table 23; and the storm depths for 

the 36-hour minimum interevent time (column 4 [shaded] of 

table 23) are computed by interpolation. The values in table 23 

indicate that for a BMP in Randall County to capture, for example, 90 percent of all storms, assuming total conversion of rainfall to runoff and that the BMP is memoryless, the structure 

should have about 1.35 inches of storage.

Example 9: Estimation of the Uncertainty of a Regional 

Estimate of a Storm Depth Percentile

PROBLEM: Estimation of the uncertainty of the 99th percentile of storm depth for the 24-hour minimum interevent time 

for Randall County, Tex. (fig. 3A), is required as part of a sensitivity analysis of a BMP design. This storm depth percentile 

was computed as part of example 8.

SOLUTION: The use of dimensionless frequency curves 

and the mean for a statistic provide a convenient framework 

to compute uncertainty. The dimensionless frequency curve 

is assumed to be invariant. All uncertainty is assumed to be 

associated with the mean storm depth. The regional analysis 

provides a measure of uncertainty through computation of the 

study-area mean storm depth and root-weighted-mean-square 

error (RwMSE). For the 24-hour minimum interevent time, the 

mean storm depth for the study area is 0.648 inch, and RwMSE 

is 0.043 inch (table 10). The relative error thus is 0.0664 (0.043 

divided by 0.648). The mean storm depth for the 24-hour minimum interevent time for Randall County is 0.488 inch (table 

19). The error for the county thus is 0.0324 inch (0.0664 multiplied by 0.488). The storm depth frequency factor for the 

99th-percentile storm is 6.57 (column 2 of table 23). Thus, the 

99th-percentile storm depth for Randall County with uncertainty is computed as 6.57×0.488±6.57×0.0324 and written as 

3.21±0.213 inch.

Example 10: Estimation of the Expected Storage in a 

BMP Using Mean Storm Interevent Time, Depth, and 

Duration

ËPROBLEM: An analytical solution for the expected 

storage of runoff in a BMP is needed for a location in Randall 

County, Tex. (fig. 3A). The watershed has a runoff coefficient 

of 0.70 and a depression storage of 0.50 inch. The BMP has a 

maximum storage of 0.9 inch and a controlled outflow or treatment rate of 0.0375 inch per hour. The drawdown time of the 

BMP thus is 24 hours (0.9 divided by 0.0375).

SOLUTION: The mean storm interevent times for the 

county (table 18) are 8.21 days (8-hour minimum interevent 

time) and 10.5 days (24-hour minimum interevent time). The 

mean storm depths for the county (table 19) are 0.378 inch 

(8-hour minimum interevent time) and 0.488 inch (24-hour 

minimum interevent time). The mean storm durations for the 

county (table 20) are 5.36 hours (8-hour minimum interevent 

time) and 11.2 hours (24-hour minimum interevent time).

Adams and Papa (2000, p. 208–210) provide equations 

to compute the expected storage. The equations require an 

assumption that storm interevent time, depth, and duration are 

each exponentially distributed, allowing Adams and Papa 

(2000) to derive closed-form solutions for expected storage 

in a BMP. One equation (Adams and Papa, 2000, eq. 9.18a) is 

applicable for situations in which storm statistics are defined by 

a minimum interevent time less than the drawdown time of the 

BMP: 

, (20)

where is the expected storage in the BMP at the end of a 

storm; is the maximum storage of the BMP in inches; is 

the constant or controlled outflow rate from the reservoir in 

inches per hour; is the parameter for exponentially distributed interevent times in hours-1(1/mean interevent time); is 

the parameter for exponentially distributed storm duration in 

hours-1 (1/mean duration); is the parameter for exponentially 

distributed storm depth in inches-1 (1/mean depth); is a 

x F( ) – 0.5790 1.115

–0.1359 ------------------- 1 1 F1.747 –

1.747 --------------------- ⎝ ⎠ ⎛ ⎞ –0.1359

= + –

x F( ) – 0.4868 1.086

–0.1326 ------------------- 1 1 F1.617 –

1.617 --------------------- ⎝ ⎠ ⎛ ⎞ –0.1326

= + –

E s[ ] SA

Ωψ λ ( ) +

λψ ----------------------- Ωψ λ – ------------- ψλ

---e

–( ) λ Ω⁄ SA λ

ψ

---e

–( ) ψ Ω⁄ SA – ⎝ ⎠ ⎛ ⎞ = – +

e ζSD –

λ Ω⁄ ζφ + ⁄ + ---------------------------

1 1

ψ λ – ------------- ψe

–( ) λ Ω⁄ SA λe–( ) ψ Ω⁄ SA – ( ) –

λ Ω⁄

ψ Ω⁄ ζφ + ⁄ + 1 ---------------------------- e

–( ) ψ Ω⁄ ζφ + ⁄ SA ( ) –

E s[ ]

SA Ω

ψ

λ

ζ

φ
Summary 45

runoff coefficient; and is depression storage or an initial 

abstraction in inches. 

Equation 20 is complex, but if the minimum interevent 

time is greater than or equal to the drawdown time, then a much 

simpler equation results because prior storage in the BMP is 

zero. The alternative equation (Adams and Papa, 2000, eq. 9.27) 

is 

, (21)

where the variables are as defined for equation 20.

The values for the parameters when the statistics for the 

8-hour minimum interevent time are used are = 0.90 inch, 

= 0.0375 inch per hour; = 0.005075 hour-1 [1/(8.21×24)]; 

= 0.1866 hour-1 (1/5.36); = 2.646 inches-1 (1/0.378); 

 = 0.70; and = 0.50 inch. Substituting these values into 

equation 20 produces an expected storage of 0.0748 inch.

The values for the parameters when the statistics for the 

24-hour minimum interevent time are used are = 0.90 inch;

= 0.0375 inch per hour; = 0.003968 hour-1 [1/(10.5×24)]; 

= 0.08929 hour-1 (1/11.2); = 2.049 inches-1 (1/0.488); 

= 0.70; and = 0.50 inch. Substituting these values into 

equation 21 produces an expected storage of 0.0511 inch.

The two estimates of expected storage would not be 

assumed to be numerically equal, but should be of the same general order of magnitude. In practice, equation 21 is considerably 

easier to use, but it requires storm statistics derived from a minimum interevent time greater than or equal to the drawdown 

time of the BMP. Therefore, an important contribution of this 

report is that analytical solutions for BMP function are simplified by the documentation of rainfall statistics for a wide range 

of minimum interevent times.

Summary

The design of runoff-control structures, from simple 

floodwater-detention basins to sophisticated best-management 

practices (BMPs), such as engineered sand-filtration ponds, 

requires the statistical characterization of rainfall as a basis for 

cost-effective, risk-mitigated, hydrologic engineering design. 

For this report, BMPs and similar structure types are collectively referred to as BMPs. BMPs can be a substantial component of public and private drainage infrastructure, and the characteristics of rainfall for a given location strongly influence the 

hydrologic and hydraulic function of these structures. In 2000, 

the U.S. Geological Survey, in cooperation with the Texas 

Department of Transportation, and in collaboration with University of Houston, Lamar University, and Texas Tech University, initiated a research program of Texas rainfall characteristics to enhance hydrologic engineering design. This report 

presents a framework for analysis of the probabilistic, or 

expected, function of these structures in the context of rainfall 

inputs to a watershed. 

Comprehensive documentation of the three statistics of 

storms is provided. The three statistics are (1) mean storm interevent time, (2) distribution of storm depth, and (3) distribution 

of storm duration. These statistics are provided for each of 

seven selected minimum interevent times: 6, 8, 12, 18, 24, 48, 

and 72 hours. 

A number of studies related to statistics of rainfall and statistics of storms for BMP analysis have been done. The Texas 

Department of Transportation has sponsored a multifaceted 

research program through several research projects on rainfall 

characteristics in Texas from the mid-1990s through 2005. A 

chronological list and brief description of results of the research 

program through 2005 is provided. 

A database of storms recorded through 2002 at National 

Weather Service hourly rainfall stations in eastern New Mexico, Oklahoma, and Texas was compiled. The database contains 

more than 155 million values of hourly rainfall (zero values 

included) from 774 stations. Ninety-two stations and more than 

18 million values are available for eastern New Mexico; 149 

stations and more than 33 million values are available for Oklahoma; and 533 stations and more than 103 million values are 

available for Texas. For perspective, for an 8-hour minimum 

interevent time, 97,491 storms in eastern New Mexico, 206,646 

storms in Oklahoma, and 584,159 storms in Texas are available. 

A method to define distinct storms from the hourly time 

series of rainfall data is needed. Distinct storms typically are 

defined using a minimum time interval of no rainfall; this time 

interval is referred to as a minimum interevent time. The 

approach used for this report is to distinguish long time intervals 

according to the drawdown, infiltration time, or treatment time 

of a BMP—a structural minimum interevent time. The selected 

structural minimum interevent times are the intervals 6, 8, 12, 

18, 24, 48, and 72 hours.

For each of the selected minimum interevent times, the 

time series of hourly rainfall for each station was parsed or separated into sequences of storms for subsequent statistical analysis. Among the assumptions made as part of the statistical analysis is an assumption that no changes in rainfall characteristics 

occur from year to year or from season to season.

The storm interevent time was computed as the ratio of 

the total duration of record (hours) divided by the number of 

observed storms minus the mean storm duration (hours). The 

storm interevent time then was converted to units of days 

per storm. Storm interevent time is a mean or average rate (time 

per storm); however for brevity, that rate is expressed as time in 

this report. 

The Poisson distribution is suggested to model the number 

of storms in a given time period. The exponential distribution is 

suggested to model the interevent time of successive storms. 

The mean storm interevent time is used as a parameter for each 

of these distributions. Example problems using these distributions are provided.

The 1st, 2nd, 10th, 25th, 50th, 75th, 90th, 98th, and 99th 

percentiles of storm depth and duration were computed for each 

station. If the sample size in terms of number of storms was 

insufficient to estimate the percentile, the percentile for that 

SD

E s[ ] φ

ζ

-- λ Ω⁄

λ Ω⁄ ζφ + ⁄ ---------------------------- 1 e ( ) ζ φ⁄ SA –

( ) – e ζSD –= ×

SA

Ω ψ

λ ζ

φ SD

SA

Ω ψ

λ ζ

φ SD
46 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

station was recorded as a missing value. The percentiles of both 

depth and duration for each station are tabulated.

The L-moment statistics of distributions of both storm 

depth and storm duration for each station were computed 

and tabulated. The L-moments of storm depth and duration 

considered in this report are the mean, L-scale, coefficient of 

L-variation (L-CV), L-skew, L-kurtosis, and Tau5. L-CV is 

dimensionless and is defined as the ratio of L-scale to the mean. 

L-skew, L-kurtosis, and Tau5 also are dimensionless. The 

L-moments for a given station were considered missing values 

unless five or more storms were observed in the data record.

The L-moments are useful because a distribution is characterized by a few numbers. Furthermore, when a suitable probability distribution is fit to the L-moments of the observed distribution, then interpolation or extrapolation to percentiles not 

represented in the data or conveniently tabulated is possible.

Regionwide (eastern New Mexico) or statewide (Oklahoma and Texas) record-length, weighted-average values for 

mean storm interevent time and storm depth and storm duration 

L-moments, consisting of the mean, L-CV, L-skew, L-kurtosis, 

and Tau5 are tabulated. An important observation is that the 

regionwide or statewide mean values for the dimensionless 

L-moments (L-CV, L-skew, L-kurtosis, and Tau5) are all of the 

same general order of magnitude as minimum interevent time 

increases. A second important observation is that the dimensionless L-moments for eastern New Mexico, Oklahoma, and 

Texas are of the same general order of magnitude. Both observations indicate that distributions of storm depth and storm 

duration are relatively invariant with both minimum interevent 

time and location. Distribution similarity with minimum interevent time is graphically demonstrated. Distribution insensitivity with location also is graphically demonstrated. 

Three distributions are considered for modeling the 

dimensionless distributions of storm depth and duration: exponential, gamma, and kappa distributions. Both the exponential 

and gamma distributions have precedence in analytical solutions to BMP function. In terms of accuracy, the analysis of 

an L-moment diagram indicates that the kappa distribution is 

preferable.

A dimensionless frequency curve is fit to the data using 

the method of L-moments by setting the mean equal to unity 

and L-scale equal to L-CV. The higher L-moments (L-skew, 

L-kurtosis, Tau5) remain unchanged. A dimensionless exponential distribution has no parameter to estimate. A dimensionless gamma distribution is fit to the mean (unity) and L-CV. 

A dimensionless kappa distribution is fit to the mean (unity), 

L-CV, L-skew, and L-kurtosis.

For rapid implementation of the results of this report, the 

parameters for both gamma and kappa distributions, which correspond to the L-moments of storm depth and duration (mean 

set to unity and L-scale set to L-CV) are tabulated.

The concept of regionalization in this report is a two-step 

process. First, a neighborhood smoothing of each storm statistic 

(mean storm interevent time, depth, and duration) for each minimum interevent time is done for each station in the study area. 

Second, geostatistical analysis, in the form of kriging, is done 

on the smoothed statistics for the stations to produce a continuously varying grid of the statistic. Kriging was done using a 

spherical model of the semivariogram. That semivariogram 

model was selected on the basis of intermediate spatial analysis 

as part of the kriging operation in an integrated software system. 

Subsequent to regionalization of the storm statistics, grid 

maps of the storm statistics were evaluated through computation of selected summary and diagnostic statistics for each grid 

map. The evaluation documents the error of the grids to facilitate assessment of the uncertainty in regionalization of the 

storm statistics.

The summary and diagnostic statistics for each grid map 

were computed and tabulated. These statistics are weighted 

values based on record lengths of the rainfall stations. Summary 

statistics include the number of stations without missing values 

for each minimum interevent time, the mean of a particular 

storm statistic (interevent time, depth, and duration) for the 

study area, and the weighted standard deviation (wSD) of the 

particular statistic for the study area. Diagnostic statistics computed are weighted mean bias of the grid map, root-weightedmean-square error (RwMSE) of the grid map, and percentage 

difference between wSD and RwMSE of the grid map. The 

mean bias is the weighted average of the station residuals. A 

residual is defined as the value of the observed statistic at each 

station minus the statistic predicted by the grid map.

Maps depicting the magnitude and a spatial variation of 

mean storm interevent time, depth, and duration by county for 

each of the seven minimum interevent times are presented. The 

diagnostic statistics show that the mean biases are approximately zero. Comparison of the percentage differences between 

wSD and RwMSE shows that the differences are largest for 

mean storm depth and smallest for mean storm interevent time, 

which indicates that the mean storm depth maps explain relatively more variability in storm depth across the study area than 

the mean storm interevent time maps or mean storm duration 

maps. Hence, relatively less uncertainty is associated with the 

storm depth maps than with the maps of the other two statistics. 

Mean storm interevent time, depth, and duration for each 

county in eastern New Mexico, Oklahoma, and Texas are tabulated. Lastly, tables of mean storm interevent time, depth, and 

duration are provided. Because of the large database analyzed, 

the regionalization of storm statistics as represented by the 

dimensionless kappa distribution of storm depth and duration 

and the tables of mean storm interevent time, depth, and duration are preferable to other methods described here for statistical characterization of storms in eastern New Mexico, Oklahoma, and Texas.

Finally, 10 example problems and solutions using sitespecific and regional approaches to possible applications of the 

statistics presented in this report are discussed. The example 

problems provide a general guide for application of this report.
References 47

References

Adams, B.J., and Papa, F., 2000, Urban stormwater management planning with analytical probabilistic models: New 

York, John Wiley, 358 p.

Al-Asaadi, Rawaa, 2002, Hyetograph estimation for the State of 

Texas: Lubbock, Tex., Texas Tech University, M.S. thesis, 

96 p.

Asquith, W.H., 1998, Depth-duration frequency of precipitation 

for Texas: U.S. Geological Survey Water-Resources Investigations Report 98–4044, 107 p.

Asquith, W.H., 1999, Areal-reduction factors for the precipitation of the 1-day design storm in Texas: U.S. Geological 

Survey Water-Resources Investigations Report 99–4267, 

81 p.

Asquith, W.H., 2003, Modeling of runoff-producing rainfall 

hyetographs in Texas using L-moment statistics: Austin, 

University of Texas at Austin, Ph.D. dissertation, 386 p.

Asquith, W.H., Bumgarner, J.R., and Fahlquist, L.S., 2003, A 

triangular model of dimensionless runoff-producing rainfall 

hyetographs in Texas: Journal American Water Resources 

Association, v. 39, no. 4, p. 911–921.

Asquith, W.H., and Famiglietti, J.S., 2000, Rainfall arealreduction factor estimation using an annual-maxima centered 

approach: Journal of Hydrology, v. 230, p. 55–69.

Asquith, W.H., and Roussel, M.C., 2003, Atlas of interoccurrence intervals for selected thresholds of daily precipitation 

in Texas: U.S. Geological Survey Water-Resources Investigations Report 03–4281, 204 p.

Asquith, W.H., and Roussel, M.C., 2004, Atlas of depthduration frequency of precipitation in Texas: U.S. Geological 

Survey Scientific Investigations Report 2004–5041, 106 p.

Asquith, W.H., and Thompson, D.B., 2003, Modeling of 

runoff-producing rainfall hyetographs in Texas using 

L-moments, in Texas Section Spring Meeting, Corpus 

Christi, Tex., April 2–5, 2003, Proceedings: American 

Society of Civil Engineers.

Asquith, W.H., Roussel, M.C., Thompson, D.B., Cleveland, 

T.G., Fang, Xing, 2005, Summary of dimensionless Texas 

hyetographs and distribution of storm depth developed 

for Texas Department of Transportation Research Project 

0–4194: Center for Transportation Research, University 

of Texas at Austin, Texas Department of Transportation 

Research Report 0–4194–4, 68 p.

Bhat, U.N., and Miller, G.K., 2002, Elements of applied 

stochastic processes (3rd ed.): Hoboken, N.J., John Wiley, 

461 p.

Clarke, R.T., 1998, Stochastic processes for water scientists—

Developments and applications: New York, John Wiley, 

183 p.

Dingman, S.L., 2002, Physical hydrology (2d ed.): Upper 

Saddle, N.J., Prentice Hall, 575 p. 

Environmental Systems Research Institute, Inc. (ESRI), 2002, 

ArcGIS 8.2: Redlands, Calif., ESRI Geographical Information System and Mapping Software.

Evans, Merran, Hastings, N.A.J., and Peacock, J. B., 2000, 

Statistical distributions (3rd ed.): New York, John Wiley, 

221 p.

Gilchrist, W.G., 2000, Statistical modeling with quantile functions: Boca Raton, Fla., Chapman and Hall CRC Press, 320 p.

Hosking, J.R.M., 1990, L-moments: Analysis and estimation 

of distributions using linear combination of order statistics: 

Journal Royal Statistical Society, B, v. 52, no. 1, p. 105–124.

Hosking, J.R.M., 1994, The four-parameter kappa distribution: 

IBM Journal of Research and Development, v. 38, no. 3, 

p. 251–258.

Hosking, J.R.M., 1996, Fortran routines for use with the method 

of L-moments—Version 3: Yorktown Heights, N.Y., IBM 

Research Division, Research Report RC 20525.

Hosking, J.R.M., and Wallis, J.R., 1997, Regional frequency 

analysis—An approach based on L-moments: Cambridge, 

U.K., Cambridge University Press, 224 p.

Hydrosphere, 2003, NCDC hourly precipitation—West: 

Boulder, Colo., Hydrosphere Data Products Inc., v. 13.2, 

CD-ROM.

Isaaks, E.H., and Srivastava, R.M., 1989, An introduction to 

applied geostatistics: New York, Oxford University Press, 

561 p.

Lanning-Rush, J., Asquith, W.H., and Slade, R.M., 1998, 

Extreme precipitation depths for Texas, excluding the TransPecos region: U.S. Geological Survey Water-Resources 

Investigations Report 98–4099, 38 p.

Ross, Sheldon, 1994, A first course in probability (4th ed.): 

New York, MacMillan College Publishing Co., 473 p.

Schueler, T.R., 1987, Controlling urban runoff—A practical 

manual for planning and designing urban BMPs: Washington, D.C., Metropolitan Washington Council of 

Governments.

Stedinger, J.R., Vogel, R.M., and Foufoula-Georgiou, Efi, 

1992, Frequency analysis of extreme events, in Maidment, 

D.A., ed., Handbook of applied hydrology, chap. 18: New 

York, McGraw-Hill, p. 18.1–18.66.

Strand [now Roussel], M.C., 2003, Depth-duration frequency 

of annual precipitation maxima in Texas: Austin, University 

of Texas at Austin, M.S. thesis, 195 p. 

U.S. Environmental Protection Agency, 1986, Methodology 

for analysis of detention basins for control of urban runoff 

quality: Washington, D.C., EPA 440/S–87–001. 

Vogel, R.M., and Fennessey, N.M., 1993, L-moment diagrams 

should replace product moment diagrams: Water Resources 

Research, v. 29, no. 6, p. 1,745–1,752.

Wanielista, M.P., and Yousef, Y.A., 1993, Stormwater management: New York, John Wiley, 579 p.

Wilks, D.S., 1995, Statistical methods in the atmospheric 

sciences: San Diego, Academic Press, 467 p.

Williams-Sether, Tara, Asquith, W.H., Thompson, D.B., 

Cleveland, T.G., and Fang, Xing, 2004, Empirical, dimensionless, cumulative-rainfall hyetographs developed from 

1959–86 storm data for selected small watersheds in Texas: 

U.S. Geological Survey Scientific Investigations Report 

2004–5057, 125 p.
Blank Page
Table 1 49

Statistical Characteristics of Storm Interevent 

Time, Depth, and Duration for Eastern New 

Mexico, Oklahoma, and Texas

Table 1

Table 1. National Weather Service hourly rainfall stations in eastern New Mexico—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record

0199 Alamogordo Otero 4,350 105°56' 32°55' 09/1968 12/2002 85 35

0205 Alamogordo Dam DeBaca 4,314 104°23' 34°36' 10/1947 01/1975 87 29

0208 Alamogordo Filter Plant Otero1 4,724 105°56' 32°58' 11/1958 05/1968 82 11

0404 Angel Fire 2 S Colfax 8,632 105°18' 36°22' 07/1990 12/1993 76 4

0407 Angel Fire 1 S Colfax 8,500 105°17' 36°23' 01/1994 12/2002 62 10

0600 Artesia 6 S Eddy 3,360 104°23' 32°46' 10/1947 12/2002 95 56

0606 Aspen Grove Ranch Rio Arriba 9,708 106°11' 36°39' 11/1947 01/1950 23 4

0646 Aurora Colfax1 8,136 105°03' 36°16' 10/1947 08/1960 77 14

1120 Bonito Dam Lincoln 7,055 105°41' 33°26' 10/1947 12/2002 89 56

1440 Capitan Lincoln 6,480 105°35' 33°31' 01/1976 12/2002 93 27

1446 Caprock 4 SE Lea 4,272 103°38' 33°21' 10/1947 12/1971 91 25

1469 Carlsbad Eddy 3,120 104°13' 32°20' 10/1947 12/2002 92 56

1475 Carlsbad FAA Airport Eddy 3,232 104°15' 32°20' 10/1949 09/1951 56 3

1480 Carlsbad Caverns Eddy 4,405 103°56' 32°32' 02/1948 02/1948 6 1

1515 Carrizozo 1 SW Lincoln 5,405 105°53' 33°37' 10/1947 12/2002 96 56

1807 Cienega 5 SSW Otero 3,802 105°06' 32°02' 10/1957 04/1964 72 8

1840 Circle F Ranch Lincoln 5,400 105°00' 33°54' 03/1980 01/1995 86 16

1881 Clayton 9 SSE Union1 4,905 103°06' 36°20' 11/1947 11/1947 4 1

1887 Clayton Municipal Airport Union 4,960 103°09' 36°26' 10/1947 12/2002 88 56

1939 Clovis Curry 4,290 103°12' 34°25' 07/1949 12/2002 94 54

1950 Clovis 8 NW Curry1 4,383 103°19' 34°29' 10/1947 06/1949 39 3

1956 Clovis 3 W Curry1 4,272 103°14' 34°25' 10/1947 06/1949 43 3

1961 Clovis 6 SW Curry1 4,242 103°19' 34°21' 10/1947 06/1949 42 3

1963 Clovis 13 N Curry 4,435 103°12' 34°35' 07/1949 12/2002 94 54

1982 Cochiti Dam Sandoval 5,560 106°19' 35°38' 04/1967 12/2002 92 36

2030 Conchas Dam San Miguel 4,244 104°11' 35°24' 10/1947 12/2002 94 56

2139 Cowles San Miguel 8,107 105°40' 35°49' 09/1961 04/1965 38 5

2203 Crossroads Lea 4,150 103°20' 33°31' 03/1977 05/1993 92 17

2207 Crossroads 2 Lea 4,124 103°20' 33°30' 12/1971 12/2002 71 17

2510 Dilia Guadalupe 5,150 105°03' 35°11' 10/1947 12/2002 90 56

2625 Dunlap 4 NE DeBaca1 4,032 104°30' 34°08' 11/1947 12/1961 92 15

2665 Duran Torrance 6,285 105°23' 34°28' 10/1947 12/2002 92 56

2694 Eagle Creek Intake Lincoln1 8,005 105°42' 33°24' 10/1947 10/1949 61 3

2700 Eagle Nest Colfax 8,280 105°15' 36°33' 10/1947 12/2002 89 56

3145 Farnsworth Ranch Lincoln 5,400 105°00' 33°54' 05/1953 05/1980 91 28

3242 Folsom Union1 6,604 103°55' 36°52' 10/1947 01/1950 17 4

3288 Fort Stanton Lincoln 6,224 105°31' 33°30' 05/1970 11/1975 58 6

3374 Galisteo Santa Fe 6,093 105°57' 35°24' 01/1958 12/1977 96 20

4026 Hobbs Lea 3,615 103°07' 32°43' 05/1948 09/1948 25 1

4028 Hobbs FAA Airport Lea 3,655 103°12' 32°41' 06/1948 10/1958 90 11

4030 Hobbs 13 W Lea 3,816 103°21' 32°42' 10/1996 12/2002 72 7

4089 Hondo 1 SE Lincoln 5,270 105°15' 33°22' 10/1947 12/2002 93 56

4112 Hope Eddy 4,091 104°44' 32°48' 05/1965 12/2002 88 34

4306 Ione Union1 4,705 103°18' 35°45' 11/1947 12/1961 82 15

4850 Las Vegas 2 NW San Miguel 6,604 105°16' 35°37' 11/1954 06/1983 84 29

4856 Las Vegas FAA Airport San Miguel 6,866 105°08' 35°39' 11/1947 11/1954 80 8

4860 Las Vegas 4 NW San Miguel 6,706 105°16' 35°38' 05/1967 06/1969 68 3

4862 Las Vegas Sewage Plant San Miguel 6,349 105°12' 35°34' 06/1983 12/2002 91 20

5370 Maljamar Lea 4,122 103°45' 32°51' 02/1948 12/2002 91 55

5651 Mesa Service Station Chaves1 5,003 104°41' 33°59' 11/1947 03/1953 74 7

Table 1. National Weather Service hourly rainfall stations in eastern New Mexico (Hydrosphere, 2003).

[NGVD 29, National Geodetic Vertical Datum of 1929] 

Footnote at end of table.
50 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

1 County name or elevation not available in Hydrosphere (2003); supplied by authors.

5866 Montezuma 8 NW San Miguel 7,244 105°23' 35°41' 08/1971 10/1973 55 3

6138 Nogal Lake Lincoln 7,116 105°41' 33°31' 11/1947 05/1970 80 24

6275 Ocate 2 NW Mora 7,655 105°03' 36°11' 08/1960 12/2002 94 43

6435 Orogrande Otero 4,182 106°05' 32°22' 11/1947 12/2002 89 56

6492 Otto FAA Airport Santa Fe1 6,234 106°01' 35°05' 11/1947 07/1954 70 8

6619 Pasamonte Union 5,650 103°44' 36°17' 11/1947 03/1965 77 19

6659 Pearl Lea 3,800 103°23' 32°39' 11/1947 08/1996 93 50

6797 Philmont Ranch Colfax1 7,605 105°03' 36°37' 11/1947 06/1957 75 11

6951 Plaza Larga Quay1 4,072 103°36' 35°05' 11/1947 12/1953 85 7

7094 Progresso Torrance 6,297 105°53' 34°25' 11/1947 12/2002 94 56

7254 Ramon 8 SW Lincoln 5,327 105°00' 34°09' 06/1969 12/2002 92 34

7277 Raton Colfax1 6,683 104°26' 36°54' 04/1948 07/1948 24 1

7279 Raton Filter Plant Colfax 6,932 104°25' 36°55' 09/1953 12/2002 91 39

7283 Raton Weather Bureau Airport Colfax 6,385 104°30' 36°45' 11/1947 11/1968 92 20

7604 Roswell Chaves1 3,573 104°26' 33°19' 11/1947 11/1947 4 1

7605 Roswell Climat Chaves 3,605 104°33' 33°24' 09/1995 12/1996 45 2

7609 Roswell Municipal Airport Chaves 3,629 104°32' 33°24' 12/1947 12/1972 96 26

7610 Roswell Industrial Airport Chaves 3,649 104°30' 33°18' 01/1973 12/2002 97 29

7638 Roy Harding 5,878 104°11' 35°56' 11/1947 12/2002 92 56

7649 Ruidoso Lincoln 6,935 105°39' 33°21' 11/1947 12/2002 88 51

7651 Ruidoso 2 Lincoln 6,937 105°40' 33°21' 07/1987 06/1993 82 7

7735 Sacramento Otero 7,316 105°34' 32°48' 11/1947 11/1974 93 28

7736 Sacramento no. 2 Otero 7,409 105°33' 32°47' 11/1974 12/2002 88 29

7738 Sacramento Canyon Otero1 7,405 105°43' 32°41' 02/1950 03/1954 70 5

8072 Santa Fe Santa Fe 7,205 105°54' 35°41' 11/1947 03/1972 90 26

8078 Santa Fe CAA Airport Santa Fe 6,348 106°05' 35°37' 11/1947 05/1956 83 10

8084 Santa Fe Caja D R Santa Fe1 6,404 106°06' 35°43' 01/1948 01/1950 46 3

8085 Santa Fe 2 Santa Fe 6,756 105°58' 35°37' 03/1972 12/2002 91 31

8187 Sedan 7 NW Union1 4,774 103°13' 36°12' 11/1947 04/1960 72 14

8358 Skipworth Ranch DeBaca 4,183 104°29' 34°11' 01/1962 01/1969 62 4

8501 Springer Colfax 5,922 104°35' 36°21' 11/1947 12/2002 92 56

8518 Stanley 2 NNE Santa Fe 6,375 105°56' 35°10' 12/1954 12/2002 88 49

8596 Sumner Lake DeBaca 4,306 104°22' 34°36' 01/1975 12/2002 88 28

8788 Tererro San Miguel1 7,507 105°40' 35°46' 11/1947 08/1961 86 15

8816 Thomas 3 E Union1 4,892 103°15' 36°15' 01/1955 05/1955 8 1

9148 Tucumcari Quay 4,042 103°42' 35°10' 01/1948 01/1949 50 2

9153 Tucumcari FAA Airport Quay 4,051 103°36' 35°11' 06/1948 09/1951 49 4

9156 Tucumcari 4 NE Quay 4,086 103°41' 35°12' 11/1947 12/2002 92 56

9193 Turquoise Bonanza Creek Santa Fe 6,124 106°06' 35°33' 02/1978 03/1996 88 19

9265 Two Rivers Reservoir Chaves 4,056 104°37' 33°17' 07/1963 08/1982 89 20

9569 Waste Isolation Pilot Plant Eddy 3,418 103°47' 32°22' 09/1986 12/2002 91 17

9686 White Sands National Mon. Otero 3,995 106°10' 32°46' 11/1947 12/2002 93 56

Table 1. National Weather Service hourly rainfall stations in eastern New Mexico—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record
Table 2 51

Table 2. National Weather Service hourly rainfall stations in Oklahoma—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record

0017 Ada Pontotoc 1,015 96°41' 34°47' 04/1957 06/1957 22 1

0026 Adair 1 E Mayes1 679 95°15' 36°26' 10/1947 04/1969 80 23

0179 Altus Irrigation Research Station Jackson 1,380 99°20' 34°35' 01/1948 12/2002 83 35

0188 Altus 7 NE Jackson 1,440 99°16' 34°43' 10/1947 08/1970 78 24

0215 Ames Major 1,213 98°11' 36°14' 10/1947 12/2002 83 56

0242 Anthon 6 W Custer1 1,821 99°06' 35°45' 10/1947 08/1973 88 27

0256 Antlers Pushmataha 470 95°36' 34°13' 10/1947 03/2001 89 55

0260 Apache Caddo 1,280 98°21' 34°53' 11/1947 06/1957 12 2

0292 Ardmore Carter 880 97°08' 34°10' 04/1957 12/2002 71 21

0293 Ardmore no. 2 Carter 850 97°09' 34°09' 08/1960 08/1994 86 26

0296 Ardmore FAA Airport Carter 725 97°01' 34°18' 10/1947 12/1958 90 12

0535 Barnsdall Osage 770 96°09' 36°33' 05/1979 11/2002 80 19

0537 Barnsdall 2 Osage 740 96°10' 36°33' 11/1986 01/1992 68 7

0670 Bengal 2 NNW Latimer 665 95°04' 34°51' 10/1947 12/2002 91 56

0814 Blackwell 1 W Kay 1,040 97°18' 36°48' 11/1947 09/1951 35 5

0908 Boise City 2 E Cimarron 4,145 102°28' 36°43' 10/1947 12/2002 75 39

0912 Boise City 2 Cimarron 4,163 102°30' 36°44' 07/1965 07/1983 83 19

1148 Britton 2 E Oklahoma1 1,171 97°30' 35°34' 04/1957 06/1957 22 1

1168 Broken Bow Dam McCurtain 443 94°42' 34°08' 08/1964 07/1997 88 34

1391 Calvin Hughes 800 96°15' 34°58' 04/1957 06/1957 24 1

1436 Caney 1 NNE Atoka 531 96°13' 34°14' 10/1947 04/1978 89 32

1437 Caney Atoka 560 96°12' 34°13' 05/1978 12/2002 78 25

1544 Carter Tower McCurtain 1,300 94°46' 34°15' 11/1947 12/2002 92 56

1684 Chandler Lincoln 958 96°52' 35°42' 06/1953 12/2002 89 50

1688 Chandler 2 Lincoln1 860 96°52' 35°43' 10/1947 06/1953 54 7

1750 Chickasha Experiment Station Grady 1,085 97°54' 35°02' 03/1958 12/2002 90 45

1855 Clayton Pushmataha 600 95°21' 34°35' 04/1957 06/1957 23 1

1891 Cleveland 1 Pawnee1 801 96°28' 36°19' 01/1948 04/1948 30 1

1900 Cleveland Pawnee 795 96°28' 36°18' 10/1947 12/1982 94 36

1902 Cleveland 4 WSW Pawnee 920 96°32' 36°17' 06/1984 06/2001 83 18

1909 Clinton Custer 1,610 98°58' 35°30' 04/1957 06/1957 22 1

1954 Coalgate 1 WNW Coal 610 96°14' 34°33' 04/1957 06/1957 22 1

2145 Corum 1 W Stephens1 1,040 98°07' 34°21' 03/1958 06/1964 79 7

2242 Crescent Logan 1,135 97°35' 35°57' 04/1957 06/1957 24 1

2309 Cumberland Oil Field Marshall1 712 96°34' 34°05' 01/1948 10/1951 94 4

2334 Custer City 3 SE Custer 1,755 98°49' 35°38' 08/1973 12/2002 89 30

2500 Dibble McClain1 11,170 97°37' 35°02' 04/1957 06/1957 16 1

2654 Duncan Airport Stephens 1,105 97°57' 34°29' 09/1979 12/2002 84 24

2665 Duncan 1 SSW Stephens 1,132 97°58' 34°29' 10/1947 08/1979 86 33

2678 Durant Bryan 600 96°22' 34°00' 04/1957 06/1957 16 1

2849 Elk City Beckham 1,970 99°24' 35°22' 10/1947 12/2002 89 52

2852 Elk City 2 Beckham 2,001 99°26' 35°25' 03/1976 11/1981 90 6

2994 Eufaula Dam Muskogee 541 95°20' 35°18' 03/1957 05/1965 87 9

2997 Eufaula Reservoir Haskell 732 95°22' 35°18' 05/1965 08/1970 88 6

3002 Eva Texas 3,574 101°54' 36°47' 10/1947 12/2002 89 56

3281 Fort Cobb Caddo 1,285 98°26' 35°06' 12/1952 12/2002 94 51

3286 Fort Gibson Dam Cherokee 531 95°14' 35°52' 05/1949 04/2001 83 53

3304 Fort Supply 3 SE Woodward 2,030 99°32' 36°32' 10/1947 12/2002 90 56

3353 Frederick Tillman 1,285 99°00' 34°23' 04/1957 06/1957 21 1

3407 Gage Airport Ellis 2,191 99°46' 36°17' 05/1948 12/2002 62 10

Table 2

Table 2. National Weather Service hourly rainfall stations in Oklahoma (Hydrosphere, 2003).

[NGVD 29, National Geodetic Vertical Datum of 1929] 

Footnote at end of table.
52 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

3497 Geary Blaine 1,595 98°19' 35°37' 10/1947 12/2002 94 56

3628 Goodwell Research Station Texas 3,310 101°37' 36°35' 10/1947 12/2002 89 56

3700 Grand River Dam Mayes 771 95°03' 36°28' 10/1947 03/1980 78 33

3740 Great Salt Plains Dam Alfalfa 1,200 98°07' 36°44' 10/1947 12/2002 89 56

3830 Guthrie SCS Logan1 981 97°25' 35°48' 11/1947 09/1957 81 11

3835 Guymon Texas 3,070 101°28' 36°42' 05/1948 09/1951 63 4

4001 Healdton Carter 734 97°28' 34°13' 05/1957 06/1957 10 1

4008 Heavener 2 N Le Flore 592 94°35' 34°54' 11/1951 06/1952 31 2

4010 Heavener Experiment Le Flore1 561 94°36' 34°55' 10/1947 07/1967 89 21

4051 Hennepin Garvin 942 97°21' 34°31' 03/1948 05/1974 96 27

4052 Hennepin 5 N Garvin 970 97°20' 34°34' 05/1974 12/2002 90 29

4098 Heyburn Dam Creek 831 96°17' 35°57' 06/1949 07/1997 93 49

4202 Hobart Kiowa 1,547 99°05' 35°01' 03/1952 12/2002 90 51

4204 Hobart Municipal Airport Kiowa 1,556 99°03' 34°59' 10/1947 11/1952 79 6

4384 Hugo Choctaw 520 95°32' 34°01' 10/1947 09/1999 93 53

4386 Hugo Dam Choctaw 466 95°24' 34°00' 01/1969 05/1997 88 29

4388 Hulah Osage1 722 96°02' 36°56' 10/1947 07/1949 54 3

4393 Hulah Dam Osage 744 96°06' 36°55' 12/1947 05/1997 88 50

4506 Inola 6 SSW Wagoner 545 95°33' 36°04' 03/1968 01/1999 83 32

4692 Kaw Dam Kay 1,079 96°56' 36°42' 08/1968 09/1980 89 13

4812 Keystone Dam Tulsa 705 96°15' 36°09' 08/1957 06/1997 88 41

4865 Kingston 4 SSE Marshall 712 96°41' 33°56' 10/1947 12/2002 93 56

4969 Lake C Blackwell Payne1 951 97°11' 36°09' 10/1947 12/1952 74 6

4975 Lake Eufaula Haskell 850 95°25' 35°17' 09/1970 12/2002 86 33

4978 Lake Overholser Oklahoma 1,270 97°39' 35°29' 01/1952 12/2002 90 51

5063 Lawton Comanche 1,150 98°27' 34°36' 10/1947 12/1947 25 1

5068 Lawton 2 N Comanche1 1,122 98°24' 34°39' 01/1948 10/1949 88 2

5108 Lehigh 4 SW Coal 695 96°16' 34°26' 10/1947 04/2002 90 56

5329 Lookeba 1 N Caddo 1,442 98°22' 35°22' 04/1957 06/1957 19 1

5463 Mackie 4 NNW Roger Mills 2,150 99°49' 35°44' 01/1970 12/2002 83 33

5581 Marlow 1 WSW Stephens 1,250 97°58' 34°38' 04/1957 06/1957 23 1

5582 Marlow 8 WSW Stephens1 1,142 98°05' 34°37' 03/1958 06/1964 82 7

5589 Marshall Logan 1,045 97°37' 36°09' 10/1975 12/2002 91 28

5648 Mayfield Beckham 2,005 99°52' 35°20' 10/1947 12/2002 92 56

5662 McAlester 4 W Pittsburg 670 95°50' 34°57' 10/1947 08/1957 88 11

5664 McAlester Regional Airport Pittsburg 770 95°46' 34°52' 05/1980 12/2002 74 23

6130 Muskogee Muskogee 518 95°20' 35°46' 10/1947 12/2002 83 56

6328 Ninnekah Grady1 1,161 97°56' 34°57' 10/1947 12/1966 76 20

6391 Norman University of Oklahoma Cleveland1 1,171 97°26' 35°13' 05/1951 10/1951 42 1

6485 Nowata Nowata 710 95°38' 36°41' 07/1949 12/2002 88 53

6612 Oilton Creek 880 96°35' 36°05' 07/1995 11/1997 8 3

6616 Oilton 2 SE Creek 880 96°34' 36°04' 11/1947 12/2002 78 56

6620 Okarche Kingfisher 1,245 97°58' 35°43' 06/1981 12/2002 89 22

6627 Okay 3 W Lock 17 Wagoner 520 95°22' 35°51' 06/1972 01/1999 76 28

6638 Okemah Okfuskee 935 96°18' 35°25' 10/1947 12/2002 86 54

6643 Okemah 2 Okfuskee1 801 96°18' 35°27' 11/1947 10/1950 67 4

6656 Oklahoma City Weather Bureau Oklahoma 1,263 97°32' 35°29' 10/1947 03/1954 80 8

6661 Oklahoma City Airport Oklahoma 1,304 97°36' 35°23' 10/1947 12/2002 97 56

6729 Oologah Dam Rogers 683 95°41' 36°26' 08/1956 01/1999 87 44

6740 Optima Lake Texas 2,834 101°08' 36°39' 10/1973 12/1994 90 22

6760 Orlando 1 NNE Noble 1,089 97°22' 36°10' 10/1947 10/1975 84 29

6859 Paoli 2 W Garvin 931 97°17' 34°49' 10/1947 12/2002 93 56

Table 2. National Weather Service hourly rainfall stations in Oklahoma—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record

Footnote at end of table.
Table 2 53

1 County name or elevation not available in Hydrosphere (2003); supplied by authors.

6926 Pauls Valley 4 WSW Garvin 940 97°16' 34°43' 04/1957 06/1957 15 1

6935 Pawhuska Osage 835 96°20' 36°40' 02/1950 12/2002 94 53

6940 Pawnee Pawnee 835 96°48' 36°21' 12/1949 12/1949 0 1

6944 Pawnee 5 N Pawnee 1,000 96°48' 36°24' 10/1947 12/2002 92 56

7080 Pine Creek Dam McCurtain 490 95°05' 34°07' 11/1965 06/1997 84 33

7196 Ponca City Kay 1,005 97°05' 36°43' 03/1952 12/2002 86 51

7201 Ponca City Municipal Airport Kay 1,000 97°06' 36°44' 10/1947 02/1952 70 6

7309 Pryor Mayes 625 95°19' 36°18' 02/1973 12/2002 79 30

7358 Quapaw Ottawa 850 94°47' 36°58' 12/1947 03/1965 82 19

7372 Quinton Pittsburg 654 95°22' 35°08' 04/1957 06/1957 24 1

7412 Range Texas 2,710 101°05' 36°32' 10/1947 12/2002 88 56

7556 Renfrow Grant 1,214 97°39' 36°55' 08/1992 12/2002 72 11

7588 Reydon 7 NNE Roger Mills1 2,172 99°52' 35°45' 10/1947 10/1965 82 19

7660 Riverside 4 W Beaver 2,450 100°25' 36°47' 10/1947 12/2002 88 56

7675 Robert S. Kerr Dam Sequoyah 493 94°46' 35°20' 06/1966 10/2001 73 36

7705 Roff 2 WNW Pontotoc 1,255 96°52' 34°38' 10/1947 12/2002 87 56

7714 Roll Roger Mills 2,303 99°43' 35°47' 11/1947 01/1970 73 24

7732 Rose Mayes 1,001 95°02' 36°13' 02/1951 01/1974 84 24

7739 Rose Tower Mayes 1,250 95°01' 36°10' 01/1974 12/2002 83 29

8029 Seiling 3 N Major 1,675 98°55' 36°11' 10/1947 07/1970 77 24

8092 Shattuck Ellis1 2,241 99°53' 36°16' 11/1947 12/1947 16 1

8101 Shattuck 1 NW Ellis 2,195 99°53' 36°17' 10/1947 12/2002 84 56

8290 Snomac Seminole 679 96°40' 35°05' 10/1947 10/1980 90 34

8420 Spiro 7 NE Lock and Dam Le Flore 420 94°33' 35°19' 07/1972 03/1989 65 18

8470 Steeley Deleware1 1,001 94°53' 36°18' 10/1947 01/1951 19 4

8497 Stigler 1 SE Haskell 570 95°06' 35°14' 10/1947 12/2002 90 56

8501 Stillwater 2 W Payne 895 97°05' 36°07' 03/1948 12/2002 93 52

8504 Stillwater 4 N Payne 930 97°04' 36°10' 07/1980 11/1986 67 7

8708 Taloga Dewey 1,705 98°57' 36°02' 04/1957 12/2002 86 34

8769 Tenkiller Ferry Dam Sequoyah 770 95°03' 35°36' 04/1949 01/1999 82 51

8879 Tipton 4 S Tillman 1,362 99°08' 34°26' 01/1948 08/1955 84 8

8884 Tishomingo Natl. Wildlife Refuge Johnston 642 96°38' 34°11' 02/1948 02/1948 8 1

8992 Tulsa International Airport Tulsa 650 95°53' 36°11' 01/1948 12/2002 99 55

9014 Turpin Beaver1 2,743 100°52' 36°52' 01/1948 10/1949 59 2

9023 Tuskahoma Pushmataha 600 95°16' 34°36' 01/1948 12/2002 92 55

9247 Wagoner Wagoner 590 95°22' 35°58' 04/1957 06/1957 23 1

9278 Walters Cotton 1,005 98°18' 34°21' 04/1957 06/1957 21 1

9300 Wann 2 Nowata1 869 95°48' 36°55' 04/1957 06/1957 25 1

9364 Watonga Blaine 1,550 98°24' 35°51' 04/1957 06/1957 24 1

9404 Waynoka Woods 1,508 98°52' 36°34' 01/1948 12/2002 89 55

9450 Webbers Falls Dam Muskogee 520 95°10' 35°35' 06/1966 10/2001 79 36

9503 West Branch Pawnee 902 96°39' 36°15' 01/1948 06/1957 94 10

9629 Wichita Mnts. Natl. Wildlife Ref. Comanche 1,665 98°42' 34°43' 01/1948 12/2002 90 55

9719 Wister 3 NE Le Flore 499 94°41' 35°00' 07/1967 03/1989 74 23

9724 Wister 3 S Le Flore 525 94°42' 34°56' 08/1989 12/2002 83 14

9748 Wolf 4 N Seminole 900 96°40' 35°08' 08/1980 12/2002 87 23

9762 Woodward Field Station Woodward 1,991 99°24' 36°25' 01/1949 06/1979 96 31

Table 2. National Weather Service hourly rainfall stations in Oklahoma—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record
54 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Table 3. National Weather Service hourly rainfall stations in Texas—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record

0015 Abilene 3 Taylor 1,780 99°42' 32°26' 02/1948 02/1948 7 1

0016 Abilene Regional Airport Taylor 1,790 99°40' 32°24' 12/1940 12/2002 96 63

0050 Adamsville Lampasas 1,030 98°09' 31°17' 05/1963 10/1985 90 23

0054 Addicks Harris 102 95°39' 29°46' 10/1947 05/1948 32 2

0120 Albany Shackelford 1,400 99°18' 32°43' 04/1957 06/1957 19 1

0145 Alice CAA Airport Jim Wells 173 98°02' 27°44' 12/1919 09/1951 49 5

0146 Alief Harris 79 95°36' 29°43' 10/1947 05/1948 30 2

0174 Alpine Brewster 4,438 103°39' 30°22' 08/1971 12/2002 96 32

0178 Alpine 11 NW Jeff Davis 4,544 103°46' 30°28' 07/1971 09/1971 23 1

0179 Alpine 10 SW Brewster 5,033 103°47' 30°16' 10/1971 04/1979 70 9

0202 Alvarado 2 NNW Johnson 835 97°13' 32°26' 07/1977 02/1987 64 8

0206 Alvord 3 NE Wise 1,010 97°39' 33°23' 04/1942 12/2002 83 61

0208 Alvord ACF 2 Wise1 889 97°42' 33°22' 11/1947 11/1947 4 1

0211 Amarillo WSO Airport Potter 3,586 101°42' 35°13' 02/1941 12/2002 98 62

0244 Anderson Grimes 351 95°59' 30°29' 05/1940 09/1941 64 2

0248 Andrews Andrews 3,192 102°33' 32°20' 07/1942 12/2002 92 61

0262 Anna Collin 680 96°31' 33°21' 08/1946 10/1995 88 50

0271 Antelope Jack 1,040 98°22' 33°26' 04/1957 06/1957 20 1

0380 Asherton Dimmit1 551 99°45' 28°26' 04/1941 12/1959 71 19

0394 Aspermont Stonewall 1,670 100°14' 33°09' 04/1957 06/1957 16 1

0408 Atlanta Cass 315 94°09' 33°07' 04/1957 06/1957 22 1

0427 Austin Water Treatment Plant Travis 500 97°39' 30°16' 09/1996 12/1997 39 2

0428 Austin Camp Mabry Travis 658 97°45' 30°19' 08/1942 12/2002 97 61

0429 Austin-Bergstrom International Travis 480 97°40' 30°10' 01/1940 07/1942 85 3

0463 Bade Ranch Sterling1 12,491 101°10' 31°50' 05/1943 04/1949 55 7

0493 Ballinger 2 NW Runnels 1,755 99°58' 31°44' 04/1957 06/1957 18 1

0495 Balmorhea Reeves1

 3,192 103°44' 30°59' 07/1942 03/1960 69 17

0496 Balmorhea Weather Bureau Pan Reeves1 3,222 103°41' 31°00' 07/1947 09/1948 47 2

0498 Balmorhea Reeves 3,220 103°44' 30°59' 04/1948 02/1949 30 2

0509 Bankersmith Kendall 1,750 98°49' 30°08' 05/1940 12/2002 93 63

0518 Bardwell Dam Ellis 461 96°38' 32°15' 04/1965 12/2002 92 38

0521 Barker Reservoir Harris1 131 95°41' 29°52' 10/1947 05/1948 27 2

0556 Bateman Ranch King 1,811 100°09' 33°35' 04/1971 09/1973 71 3

0569 Bay City Waterworks Matagorda 52 95°57' 28°59' 06/1940 12/2002 83 46

0572 Bay City 2 N Matagorda1 49 95°58' 29°00' 10/1947 10/1965 90 19

0576 Bayview Cameron1 20 97°24' 26°07' 10/1947 05/1950 65 4

0580 Baylor Ranch La Salle1 400 98°59' 28°18' 06/1940 04/1953 72 14

0587 Baytown 2 Harris 30 95°01' 29°45' 11/1947 08/1969 87 15

0605 Beasley Fort Bend1 102 95°52' 29°30' 10/1947 11/1950 53 4

0639 Beeville 5 NE Bee 255 97°42' 28°27' 08/1953 12/2002 90 50

0655 Bellville 6 NNE Austin 280 96°13' 30°01' 09/1986 09/1986 0 1

0665 Belton Dam Bell 664 97°29' 31°06' 09/1951 12/1992 92 42

0689 Benavides Duval 381 98°25' 27°36' 03/1940 12/1984 91 44

0690 Benavides 2 Duval 380 98°24' 27°35' 07/1982 12/2002 77 21

0691 Benbrook Dam Tarrant 790 97°26' 32°38' 06/1949 12/2002 92 54

0708 Benjamin 15 W King 1,650 100°02' 33°35' 02/1989 10/1992 56 4

0738 Bertram 3 ENE Burnet 1,139 98°00' 30°45' 01/1968 12/2002 95 35

0776 Big Lake LCRA 140 Reagan 2,690 101°28' 31°12' 05/1940 07/1990 90 51

0779 Big Lake 2 Reagan 2,703 101°28' 31°11' 08/1990 12/2002 90 13

0784 Big Spring Field Station Howard 2,509 101°29' 32°16' 12/1953 12/2002 93 50

0786 Big Spring Howard 2,510 101°27' 32°14' 05/1940 10/1953 90 14

0917 Bon Wier Newton 89 93°39' 30°44' 05/1940 09/1974 89 35

0923 Bonham 3 NNE Fannin 600 96°10' 33°38' 04/1957 06/1957 22 1

Table 3 Table 3. National Weather Service hourly rainfall stations in Texas (Hydrosphere, 2003).

[NGVD 29, National Geodetic Vertical Datum of 1929] 

Footnote at end of table.
Table 3 55

0926 Bonita 4 NW Montague 985 97°39' 33°50' 02/1940 12/2002 93 63

0950 Boquillas Ranger Station Brewster 1,857 102°57' 29°11' 02/1953 03/1955 57 3

0996 Boyd Wise 730 97°33' 33°04' 04/1957 06/1957 21 1

1013 Brackettville 22 N Kinney 1,675 100°28' 29°36' 10/1995 12/2002 67 8

1017 Brady McCulloch 1,720 99°20' 31°07' 05/1940 12/2002 93 63

1042 Breckenridge Stephens 1,170 98°54' 32°45' 04/1957 06/1957 17 1

1048 Brenham Washington 313 96°23' 30°09' 04/1957 06/1957 19 1

1053 Brewers Store 5 SW Kimble1 1,762 99°33' 30°41' 05/1940 11/1956 92 17

1057 Brice 2 S Hall 2,228 100°54' 34°41' 04/1941 09/1982 93 42

1063 Bridgeport Wise 745 97°46' 33°12' 04/1957 06/1957 22 1

1068 Briggs Burnet 1,090 97°56' 30°53' 02/1940 07/1998 91 59

1080 Brite Ranch Presidio1 4,623 104°32' 30°20' 02/1942 01/1951 58 8

1081 Britton Tarrant 561 97°04' 32°33' 07/1946 01/1974 85 29

1133 Brownsville Cameron 18 97°30' 25°54' 01/1948 04/1948 30 1

1136 Brownsville WSO Airport Cameron 19 97°25' 25°54' 04/1942 12/2002 97 61

1138 Brownwood Brown 1,385 98°57' 31°40' 04/1957 06/1957 15 1

1139 Brownwood near SCS no. 3 Brown1 1,342 98°59' 31°42' 01/1940 06/1941 74 2

1154 Bryan CAA Airport Brazos1 266 96°28' 30°38' 07/1948 07/1951 59 4

1165 Buchanan Dam Llano1 1,020 98°25' 30°45' 05/1946 03/1964 77 18

1185 Buenavista 2 NNW Pecos1 2,513 102°40' 31°15' 08/1942 09/1963 81 22

1186 Buescher Lake gage 2 Bastrop1 1463 97°09' 30°03' 03/1941 05/1943 61 3

1188 Buffalo Leon 358 96°03' 31°28' 07/1947 09/1947 21 1

1245 Burleson 2 SSW Johnson 771 97°20' 32°31' 04/1957 06/1957 22 1

1246 Burleson Johnson 730 97°19' 32°33' 12/1982 12/2002 92 21

1267 Bushland 1 WSW Potter 3,819 102°04' 35°11' 02/1940 05/1953 76 14

1304 Cadiz Bee1 351 97°57' 28°26' 03/1940 08/1953 81 14

1325 Calhoun Colorado1 161 96°20' 29°32' 03/1940 03/1965 92 26

1429 Canyon Dam Comal 1,000 98°11' 29°52' 08/1978 12/2002 86 25

1431 Canyon Dam no. 1 Comal 980 98°17' 29°51' 02/1961 09/2002 84 41

1432 Canyon Dam no. 2 Comal 1,040 98°21' 29°50' 02/1961 03/1989 86 29

1433 Canyon Dam no. 3 Comal 1,265 98°24' 29°56' 02/1961 12/2002 87 42

1434 Canyon Dam no. 4 Comal 1,168 98°22' 29°54' 02/1961 12/2002 90 41

1435 Canyon Dam no. 5 Comal 1,002 98°21' 29°55' 02/1961 05/1987 87 27

1436 Canyon Dam no. 6 Comal 1,137 98°18' 29°56' 02/1961 12/2002 96 42

1437 Capps Moore1 3,304 101°38' 36°03' 02/1961 08/1961 53 1

1438 Canyon Dam no. 7 Comal 978 98°13' 29°55' 02/1961 06/1993 89 33

1462 Carlsbad Tom Green1 1,923 100°35' 31°35' 10/1947 04/1949 0 2

1492 Carta Valley Edwards 1,851 100°40' 29°47' 07/1963 06/1995 89 33

1500 Carthage Panola 340 94°21' 32°08' 04/1957 06/1957 23 1

1528 Catarina Dimmit 560 99°37' 28°20' 01/1960 10/2001 87 42

1541 Cedar Creek 4 SE Bastrop 470 97°27' 30°02' 10/2001 12/2002 48 2

1569 Cego near SCS Temple 4 Falls1 1500 97°10' 31°15' 01/1940 09/1943 78 4

1632 Chambers Hill Guard Station Sabine1 351 93°50' 31°28' 07/1947 08/1947 13 1

1641 Chancellor Pecos1

 3,402 103°11' 30°42' 08/1942 02/1955 57 14

1646 Channing Hartley 3,800 102°20' 35°41' 01/1941 12/2002 90 62

1663 Charlotte 5 NNW Atascosa 441 98°44' 28°55' 09/2001 12/2002 32 2

1671 Cheapside Gonzales 310 97°20' 29°18' 05/1940 12/2002 91 63

1680 Cherokee San Saba 1,490 98°43' 30°59' 05/1941 03/1972 90 31

1694 Childress 2 Childress 1,940 100°12' 34°25' 11/1997 12/2002 54 6

1696 Childress 3 WSW Childress 1,972 100°15' 34°26' 02/1940 08/1975 86 31

1697 Childress 13 NE Childress 1,713 100°20' 34°34' 02/1975 06/1978 53 4

1698 Childress Municipal Airport Childress 1,951 100°16' 34°25' 10/1947 12/2002 83 34

1720 Choke Canyon Dam Live Oak 230 98°15' 28°28' 09/1997 12/2002 79 6

1761 Clarendon Donley 2,700 100°53' 34°55' 07/1948 06/1950 45 3

1773 Clarksville 1 W Red River 426 95°01' 33°36' 09/1940 12/2002 93 58

Table 3. National Weather Service hourly rainfall stations in Texas—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record

Footnote at end of table.
56 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

1810 Cleveland Liberty 196 95°05' 30°21' 04/1957 06/1957 22 1

1823 Clifton 9 E Bosque 669 97°26' 31°48' 04/1957 06/1957 21 1

1870 Coldspring 5 SSW San Jacinto 355 95°09' 30°32' 03/1965 07/1970 82 6

1875 Coleman Coleman 1,727 99°25' 31°49' 04/1957 06/1957 19 1

1876 Coleman near SCS Coleman1 2,001 99°38' 31°52' 04/1942 07/1943 62 2

1889 College Station Easterwood Brazos 305 96°21' 30°35' 08/1951 12/2002 74 5

1903 Colorado City Mitchell 2,105 100°51' 32°23' 06/1993 12/2002 89 10

1914 Comanche Comanche 1,345 98°35' 31°54' 04/1957 06/1957 18 1

1920 Comfort 2 Kendall 1,435 98°53' 29°57' 07/1990 12/2002 71 13

1921 Commerce 4 SW Hunt 550 95°56' 33°12' 08/1948 12/2002 92 55

1937 Concord 1 N Rusk 541 94°35' 31°55' 08/1962 10/1983 89 22

1956 Conroe Montgomery 245 95°28' 30°19' 07/1947 12/2002 85 56

1970 Cooper Delta 480 95°41' 33°22' 04/1957 06/1957 21 1

2014 Corpus Christi Nueces 10 97°24' 27°48' 01/1940 12/1948 100 8

2015 Corpus Christi WSFO Airport Nueces 41 97°30' 27°46' 10/1947 12/2002 98 56

2019 Corsicana Navarro 413 96°28' 32°06' 04/1957 06/1957 20 1

2024 Coryell City Coryell 971 97°37' 31°33' 07/1944 03/1989 86 46

2042 Cottonwood Dam no. 1 El Paso1 3,852 106°05' 31°33' 10/1947 07/1949 41 3

2043 Cottonwood Dam no. 2 El Paso 1385 106°04' 31°32' 08/1943 11/1948 72 5

2048 Cotulla La Salle County Airport La Salle 476 99°13' 28°27' 04/1956 12/2002 89 47

2050 Cotulla FAA Airport La Salle 463 99°13' 28°27' 10/1949 09/1951 53 3

2051 Cotulla Hillje Ranch La Salle 331 99°04' 28°14' 04/1953 03/1956 63 4

2053 County Line Hudspeth1 3,553 105°59' 31°23' 03/1942 07/1942 41 1

2073 Crabb 2 W Fort Bend1 112 95°45' 29°32' 01/1948 09/1964 92 17

2082 Crane 2 E Crane 2,602 102°18' 31°24' 08/1943 12/2002 93 60

2086 Cranfills Gap Bosque 975 97°50' 31°46' 05/1940 12/2002 81 63

2088 Crawford McLennan 705 97°27' 31°32' 11/2001 12/2002 45 2

2090 Crawford 4 WSW McLennan 842 97°31' 31°31' 11/1988 06/1995 72 8

2096 Cresson Hood 1,050 97°37' 32°32' 09/1946 12/2002 91 57

2128 Cross Plains 1 Callahan 1,742 99°10' 32°07' 01/1940 10/1947 87 8

2131 Cross Plains 2 Callahan 1,790 99°09' 32°07' 11/1947 12/2002 89 56

2142 Crowell Foard 1,455 99°43' 33°59' 04/1957 06/1957 21 1

2160 Crystal City Zavala 580 99°49' 28°40' 07/1948 02/1949 22 2

2206 Cypress Harris 150 95°41' 29°57' 01/1991 12/2002 94 12

2238 Dalhart Dallam1 4,003 102°29' 36°05' 01/1941 12/1946 86 6

2240 Dalhart FAA Airport Hartley 3,990 102°32' 36°01' 04/1950 09/1951 58 2

2242 DFW International Airport Tarrant 560 97°01' 32°53' 02/1974 12/2002 97 29

2244 Dallas Love Field Dallas 440 96°51' 32°51' 11/1940 12/2002 90 62

2247 Dallas WFAA Dallas1 479 96°47' 32°46' 01/1940 10/1940 80 1

2309 Dawson Navarro1 479 96°43' 31°54' 12/1943 06/1962 77 19

2312 Deberry Panola 361 94°10' 32°18' 08/1973 02/1984 81 12

2334 Decatur Wise 1,025 97°35' 33°13' 08/1945 02/1948 57 4

2336 Decatur 7 N Wise1 902 97°35' 33°20' 10/1947 10/1953 73 7

2354 Dell City 5 SSW Hudspeth 3,770 105°14' 31°52' 05/1955 09/1957 39 3

2355 Delmita Hidalgo1 102 98°07' 26°39' 03/1940 06/1941 51 2

2357 Del Rio Weather Bureau City Val Verde1 961 100°54' 29°22' 02/1940 04/1951 87 12

2360 Del Rio Airport Val Verde 999 100°55' 29°22' 05/1951 12/2002 84 46

2361 Del Rio 2 NW Val Verde 1,080 100°54' 29°25' 08/1996 12/2002 66 7

2394 Denison Dam Grayson 613 96°34' 33°49' 01/1940 07/1997 91 58

2404 Denton 2 SE Denton 630 97°06' 33°11' 08/1946 12/2002 90 57

2415 Deport 4 NW Lamar 436 95°22' 33°33' 02/1944 04/2001 84 58

2462 Dime Box Lee 335 96°50' 30°21' 07/1981 12/2002 80 22

2528 Dora near SCS no. 6 Taylor1 2,303 100°06' 32°16' 10/1940 08/1943 64 4

2617 Dumas Moore 3,655 101°58' 35°52' 01/1941 07/1948 83 7

Table 3. National Weather Service hourly rainfall stations in Texas—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record

Footnote at end of table.
Table 3 57

2619 Dumas 8 NE Moore 3,553 101°53' 35°57' 10/1947 02/1955 67 9

2621 Dumont King 2,010 100°31' 33°48' 04/1971 12/2002 85 32

2675 Eagle Lake Colorado 177 96°20' 29°36' 10/1965 02/1986 81 22

2676 Eagle Lake Research Center Colorado 176 96°21' 29°37' 04/1986 12/2002 84 17

2679 Eagle Pass Maverick 808 100°28' 28°42' 10/1941 12/2002 91 62

2715 Eastland Eastland 1,433 98°49' 32°23' 08/1961 12/2002 91 41

2744 Eden 2 Concho 2,070 99°51' 31°13' 09/1940 10/1987 86 48

2758 Edinburg Hidalgo 96 98°09' 26°17' 10/1947 05/1950 63 4

2794 El Paso 32 ENE Hudspeth 5,240 105°57' 31°50' 07/1947 09/1947 22 1

2797 El Paso Airport El Paso 3,918 106°22' 31°48' 08/1942 12/2002 97 61

2811 Eldorado 1 N Schleicher 2,419 100°36' 30°53' 03/1940 12/1995 92 50

2813 Eldorado 11 SW Schleicher1 2,431 100°46' 30°47' 03/1949 10/1952 19 4

2814 Eldorado 19 SW Schleicher1 2,362 100°53' 30°44' 10/1947 02/1949 8 3

2815 Eldorado 12 N Schleicher 2,380 100°35' 31°02' 04/1996 12/2002 84 7

2818 Electra Wichita 1,216 98°55' 34°02' 07/1952 08/1957 81 6

2986 Eureka Navarro1 351 96°18' 32°01' 09/1940 12/1946 65 7

3005 Evant 1 SSW Coryell 1,245 98°10' 31°28' 05/1943 12/2002 87 60

3033 Fabens 1 El Paso 3,612 106°09' 31°30' 02/1953 09/1977 95 25

3034 Fabens 2 El Paso1 3,652 106°09' 31°31' 07/1949 04/1951 2 2

3047 Fairfield 3 W Freestone 432 96°12' 31°43' 04/1957 06/1957 22 1

3103 Fawcett Ranch Val Verde1 1,503 100°54' 29°52' 04/1946 08/1949 44 4

3133 Ferris Ellis 470 96°40' 32°31' 07/1946 12/2002 89 56

3156 Fischers Store Comal 1,160 98°15' 29°58' 10/1995 12/2002 70 8

3171 Flat Coryell 835 97°38' 31°19' 02/1950 12/2002 91 53

3189 Fletcher Ranch Presido1 4,852 104°12' 30°10' 02/1942 02/1954 72 12

3260 Fort Clark Kinney1 1,102 100°27' 29°18' 03/1941 03/1946 71 6

3267 Fort McIntosh Webb1 459 99°31' 27°30' 12/1940 07/1943 60 4

3270 Fort McKavett 7 N Menard 2,215 100°06' 30°55' 04/1961 12/2002 85 42

3272 Fort Quitman Hudspeth1 3,432 105°36' 31°06' 02/1942 07/1942 44 1

3277 Fort Stockton 1 Pecos1 3,051 102°53' 30°53' 07/1948 12/1948 41 1

3278 Fort Stockton 35 SSW Pecos 4,393 103°02' 30°23' 06/1958 04/1987 90 30

3280 Fort Stockton Pecos 3,038 102°54' 30°54' 05/1955 02/1960 77 6

3281 Fort Stockton 25 SSW Pecos1 4,104 102°57' 30°32' 05/1955 04/1958 52 4

3283 Fort Worth Weather Bureau Ap. Tarrant 574 97°03' 32°50' 11/1940 12/1984 96 30

3284 Fort Worth Meacham Field Tarrant 687 97°21' 32°49' 01/1940 12/2002 93 57

3285 Fort Worth WSFO Tarrant 644 97°18' 32°50' 05/1948 12/2002 93 44

3329 Fredericksburg Gillespie 1,685 98°54' 30°14' 04/1940 03/1975 90 36

3335 Freeman Ranch Harris1 1151 95°47' 29°53' 01/1943 11/1946 89 4

3370 Frisco Collin 740 96°49' 33°09' 10/1966 12/2002 91 37

3410 Gageby 3 WNW Hemphill 2,800 100°23' 35°37' 04/1941 12/2002 91 59

3415 Gainesville Cooke 780 97°08' 33°38' 09/1941 12/2002 82 62

3430 Galveston Galveston 10 94°46' 29°20' 01/1940 07/2000 93 61

3431 Galveston Weather Bureau Ap. Galveston 5 94°52' 29°16' 01/1948 09/1951 72 4

3441 Garcia Lake Deaf Smith1

 4,203 103°01' 34°53' 10/1947 08/1953 23 6

3442 Garcia Lake 12 ENE Deaf Smith 4,134 102°44' 34°55' 11/1943 05/1971 66 21

3446 Garden City 16 E Sterling 2,461 101°12' 31°50' 04/1949 07/1973 87 25

3460 Garland near SCS no. 10 Dallas1 610 96°41' 32°57' 01/1940 10/1940 79 1

3462 Garlington Ranch Sterling1 12,622 100°53' 31°55' 08/1943 04/1949 56 7

3463 Garner State Park Uvalde1 1,401 99°44' 29°35' 07/1948 12/1951 23 4

3476 Lewisville Dam Denton 561 97°01' 33°04' 07/1949 01/1964 88 16

3485 Gatesville 4 SSE Coryell 760 97°43' 31°23' 04/1957 06/1957 22 1

3507 Georgetown Lake Williamson 840 97°43' 30°41' 07/1981 12/2002 80 22

3546 Gilmer 4 WNW Upshur 390 95°02' 32°44' 07/1941 12/2002 86 56

3547 Gilmer Upshur1 371 94°57' 32°44' 12/1950 09/1956 65 7

3579 Glen Cove 2 NE Coleman 2,090 99°37' 31°52' 01/1940 04/1942 45 3

Table 3. National Weather Service hourly rainfall stations in Texas—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record

Footnote at end of table.
58 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

3642 Gordonville Grayson 755 96°51' 33°47' 01/1942 12/2002 91 61

3646 Gorman 2 NNE Eastland 1,380 98°39' 32°14' 09/1951 07/1999 93 49

3668 Graham Young 1,050 98°35' 33°06' 04/1957 06/1957 22 1

3673 Granbury 2 ENE Hood 722 97°45' 32°27' 04/1957 06/1957 23 1

3686 Granger Dam Williamson 565 97°20' 30°42' 05/1980 12/2002 88 23

3691 Grapevine Dam Tarrant 585 97°03' 32°57' 06/1949 12/2002 93 54

3734 Greenville KGVL Radio Hunt 545 96°06' 33°10' 04/1957 06/1957 23 1

3771 Groesbeck 2 Limestone 465 96°31' 31°31' 11/1977 12/2002 86 26

3789 Guadalupe Pass CAA Airport Culberson 5,452 104°48' 31°50' 07/1948 08/1950 58 3

3826 Gustine 2 SE Comanche 1,220 98°23' 31°49' 02/1984 03/1989 80 6

3831 Guyer Wilbarger 1,161 98°56' 34°08' 01/1940 07/1952 66 13

3841 Hackberry Cottle 1,670 100°08' 33°56' 04/1971 01/1980 55 10

3871 Hall Ranch Kerr 2,280 99°36' 30°08' 04/1940 06/1976 90 37

3884 Hamilton 2 E Hamilton 1,260 98°05' 31°42' 04/1957 06/1957 21 1

3941 Harleton Harrison 345 94°34' 32°41' 09/1940 07/1941 40 2

3963 Harris Lake Brazoria 141 95°33' 29°15' 12/1948 01/1949 4 2

4040 Hazeldell Comanche 1,130 98°18' 31°53' 07/1973 01/1984 82 12

4058 Hebbronville Jim Hogg 580 98°41' 27°19' 04/1957 06/1957 23 1

4098 Hereford Deaf Smith 3,820 102°24' 34°49' 05/1955 12/2002 87 48

4100 Hereford 1 SE Deaf Smith1 3,822 102°24' 34°49' 07/1941 05/1955 62 15

4137 Hico Hamilton 1,025 98°01' 31°59' 10/1977 12/2002 83 26

4191 Hindes Atascosa 360 98°48' 28°43' 02/1940 05/1999 94 60

4256 Hondo Municipal Airport Medina 920 99°10' 29°21' 07/1996 12/2002 42 3

4257 Honey Grove Fannin 680 95°53' 33°35' 02/1944 12/2002 89 57

4258 Honey Grove 2 Fannin 659 95°54' 33°35' 03/1972 01/1975 56 4

4278 Hords Creek Dam Coleman 1,942 99°33' 31°50' 04/1956 12/2002 76 47

4299 Hot Springs Brewster1 2,201 103°00' 29°11' 07/1942 06/1952 61 11

4300 Houston Bush International Ap. Harris 95 95°21' 29°59' 01/1970 12/2002 99 33

4305 Houston Weather Bureau City Harris1 43 95°22' 29°46' 01/1940 05/1970 95 31

4307 Houston Hobby Airport Harris 44 95°16' 29°38' 01/1948 12/2002 75 11

4309 Houston Addicks Harris 91 95°38' 29°46' 01/1943 12/2002 90 59

4311 Houston Alief Harris 71 95°35' 29°42' 01/1940 12/2002 90 62

4313 Houston Barker Harris 127 95°44' 29°49' 01/1943 06/1948 80 5

4319 Houston Golf Crest Harris1 49 95°17' 29°41' 06/1948 09/1951 35 4

4329 Houston Satsuma Harris 122 95°38' 29°56' 01/1940 12/1990 89 50

4331 Houston Spring Branch Harris 92 95°30' 29°48' 10/1950 04/1952 0 2

4375 Hunt 10 W Kerr 2,095 99°31' 30°02' 07/1976 12/2002 88 27

4392 Hurt Hunt1 679 95°58' 33°13' 05/1940 08/1948 82 9

4425 Imperial Pecos 2,400 102°42' 31°16' 09/1963 10/1993 91 31

4440 Indian Gap Hamilton 1,575 98°25' 31°40' 09/1951 12/1983 97 33

4476 Iredell Bosque 902 97°52' 31°59' 09/1963 12/2002 90 40

4498 Island Stn El Paso1 3,632 106°14' 31°32' 01/1942 07/1942 56 1

4517 Jacksboro Jack 1,100 98°09' 33°14' 05/1940 10/1977 92 38

4520 Jacksboro 1 NNE Jack 1,020 98°08' 33°14' 11/1977 12/2002 82 26

4525 Jacksonville Cherokee 560 95°16' 31°57' 04/1957 06/1957 22 1

4563 Jasper Jasper 290 94°00' 30°54' 04/1957 06/1957 24 1

4570 Jayton Kent 2,010 100°34' 33°15' 05/1940 12/2002 87 63

4577 Jefferson Marion 199 94°20' 32°46' 02/1944 12/1978 91 35

4591 Jewett Leon 510 96°09' 31°21' 12/1941 02/1991 90 51

4670 Junction 4 SSW Kimble 1,747 99°48' 30°26' 03/1940 12/2002 90 62

4671 Junction FAA Airport Kimble 11,660 99°46' 30°30' 10/1948 09/1951 62 4

4679 Justin Denton 640 97°17' 33°04' 01/1954 12/2002 93 49

4696 Karnes City 2 N Karnes 450 97°52' 28°54' 07/1947 09/1947 22 1

4703 Katy Harris 142 95°49' 29°47' 10/1947 04/1951 45 5

4704 Katy City Harris 153 95°49' 29°48' 01/1940 12/1946 94 7

Table 3. National Weather Service hourly rainfall stations in Texas—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record

Footnote at end of table.
Table 3 59

4731 Kelly Field Bexar1 682 98°34' 29°23' 01/1941 12/1942 89 2

4792 Killeen 3 S Bell 910 97°43' 31°04' 09/1978 12/2002 86 25

4819 Kirbyville Jasper 200 93°55' 30°37' 07/1974 12/1978 80 5

4852 Knox City Knox 1,532 99°49' 33°25' 04/1957 06/1957 19 1

4866 Kopperl 5 NNE Hill 620 97°28' 32°08' 05/1940 12/2002 91 63

4876 Kountze Hardin 89 94°20' 30°24' 02/1980 05/1983 52 4

4878 Kountze Hardin 61 94°17' 30°22' 01/1940 12/1979 94 40

4880 Kress Swisher 3,480 101°44' 34°22' 02/1940 12/2002 95 63

4920 La Pryor Zavala 759 99°52' 28°59' 02/1940 12/2002 88 60

4934 La Vernia Wilson1 479 98°06' 29°22' 07/1947 09/1947 17 1

4972 Lake Bridgeport Dam Wise 870 97°49' 33°13' 08/1946 12/2002 90 57

4973 Lake Coffee Mill Fannin1 502 96°00' 33°44' 01/1946 08/1959 66 14

4974 Lake Colorado City Mitchell 2,100 100°55' 32°20' 07/1954 04/1993 80 40

4975 Lake Crockett Fannin 530 95°55' 33°44' 08/1973 12/2002 89 30

4978 Lake Kickapoo Archer 1,060 98°47' 33°40' 06/1948 10/1954 57 6

4979 Lake Palo Pinto Palo Pinto 900 98°19' 32°38' 04/1957 06/1957 21 1

4982 Lake Kemp Baylor 1,167 99°08' 33°45' 08/1974 12/2002 79 29

5018 Lampasas Lampasas 1,032 98°11' 31°04' 04/1957 07/2000 87 16

5048 Langtry Val Verde 1,290 101°33' 29°47' 07/1942 12/2002 93 58

5049 Langtry 2 Val Verde 1,342 101°34' 29°48' 10/1965 08/1969 76 5

5056 Laredo Webb 397 99°30' 27°30' 03/1948 04/1949 5 2

5057 Laredo Weather Bureau Airport Webb 500 99°28' 27°32' 03/1944 10/1965 94 22

5060 Laredo 2 Webb 430 99°29' 27°34' 10/1965 07/1972 82 8

5081 Latex Panola1 302 94°06' 32°21' 12/1942 07/1963 89 22

5094 Lavon Dam Collin 510 96°29' 33°02' 07/1949 12/2002 88 54

5113 Leakey Real 1,622 99°45' 29°44' 04/1940 12/2002 85 60

5114 Leakey 2 Real 1,601 99°50' 29°42' 07/1947 08/1947 0 1

5123 Lee Ranch Concho1 2,011 99°52' 31°08' 04/1940 08/1940 28 1

5192 Lewisville Dam Denton 556 97°00' 33°04' 02/1964 12/2002 82 38

5193 Lexington Lee 465 97°00' 30°24' 03/1940 12/2002 92 63

5224 Lindale near SCS no. 1 Smith1 522 95°28' 32°31' 01/1940 12/1946 85 6

5228 Lindale 5 SE Smith 551 95°22' 32°27' 07/1947 07/1957 68 10

5235 Lingeville near SCS no. 1 Erath1 1,470 98°22' 32°12' 01/1940 07/1940 49 1

5247 Lipscomb Lipscomb 2,450 100°16' 36°14' 01/1940 12/2002 88 63

5258 Little Elm 1 NNE Denton 551 96°56' 33°10' 08/1946 10/1966 88 21

5303 Loma Alta Val Verde1 1,923 100°46' 29°55' 11/1942 05/1963 89 22

5312 London 3 N Menard 1,800 99°34' 30°42' 11/1956 12/2002 83 47

5341 Longview Gregg 330 94°44' 32°27' 04/1957 06/1957 23 1

5342 Longview East-Tex. Rgnl. Ap. Gregg 365 94°42' 32°23' 07/2002 12/2002 0 1

5348 Longview 11 SE Rusk 407 94°39' 32°20' 08/1975 12/2002 88 28

5358 Loraine Mitchell 2,270 100°43' 32°25' 01/1940 02/1984 79 45

5398 Lovelady Houston 302 95°27' 31°08' 01/1940 11/1986 93 47

5410 Lubbock 9 N Lubbock 3,245 101°49' 33°41' 09/1942 12/2002 92 61

5411 Lubbock International Airport Lubbock 3,254 101°49' 33°39' 04/1940 12/2002 97 53

5424 Lufkin Angelina County Ap. Angelina 288 94°45' 31°14' 08/1948 12/2002 59 7

5429 Luling Caldwell 400 97°39' 29°40' 09/1943 09/1965 81 23

5431 Luling 5 ENE Caldwell1 390 97°34' 29°42' 09/1965 03/1967 16 3

5461 Mabank 4 SW Henderson 341 96°09' 32°20' 04/1940 04/1977 90 38

5463 Mabank 4 SW Kaufman 360 96°07' 32°21' 05/1977 12/2002 79 26

5471 Madden Arroyo Hudspeth1 3,504 105°46' 31°13' 02/1942 07/1942 40 1

5477 Madisonville Madison 252 95°54' 30°56' 04/1957 06/1957 18 1

5528 Malone 3 ENE Hill 485 96°50' 31°56' 01/1973 12/2002 80 30

5579 Marathon Brewster 4,066 103°14' 30°12' 04/1948 04/1948 7 1

5580 Marble Falls Burnet1 771 98°17' 30°34' 04/1957 06/1957 22 1

5589 Marfa CAA Airport Presidio1 4,859 103°53' 30°15' 10/1947 01/1952 70 6

Table 3. National Weather Service hourly rainfall stations in Texas—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record

Footnote at end of table.
60 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

5590 Marfa Airport Presidio1 4,833 104°01' 30°22' 07/1942 12/1946 88 5

5591 Marfa Charco M R Jeff Davis1 5,305 104°07' 30°29' 03/1949 07/1968 94 20

5592 Marfa 9 W Presidio1 4,754 104°10' 30°18' 02/1952 05/1969 87 18

5594 Marfa Ryan Presidio1 4,705 104°19' 30°22' 05/1951 03/1959 62 9

5595 Marfa 25 WSW Presidio1 5,023 104°24' 30°12' 04/1954 02/1955 5 2

5596 Marfa 2 Presidio 4,730 104°00' 30°18' 07/1968 12/2002 92 34

5600 Marfa 16 SSE Presidio 4,662 103°53' 30°08' 06/1969 06/1981 88 13

5618 Marshall Harrison 352 94°21' 32°32' 04/1957 06/1957 23 1

5650 Mason Mason 1,430 99°14' 30°44' 04/1957 06/1957 21 1

5656 Matador 2 Motley 2,390 100°49' 34°00' 10/1965 12/2002 91 38

5658 Matador Motley 2,290 100°49' 34°01' 12/1941 10/1965 86 25

5661 Mathis 4 SSW Jim Wells 138 97°52' 28°02' 09/1997 12/2002 79 6

5666 Matthews Colorado1 151 96°20' 29°31' 03/1965 10/1965 54 1

5695 Maypearl Ellis 530 97°01' 32°19' 12/1943 02/1995 85 53

5742 Medina Bandera 1,705 99°15' 29°48' 10/1947 05/1948 26 2

5766 McKinney 3 S Collin 595 96°37' 33°10' 04/1957 06/1957 22 1

5770 McLean Gray 2,860 100°36' 35°14' 10/1940 12/2002 91 63

5775 McClellan Creek Dam Gray1 3,002 100°52' 35°14' 02/1940 09/1940 34 1

5779 McMahan Caldwell1 4,554 97°31' 29°51' 06/1969 01/1970 26 2

5840 Mercury McCulloch 1,440 99°10' 31°25' 02/1965 01/1975 83 10

5890 Midland International Airport Midland 2,862 102°11' 31°56' 02/1941 12/2002 95 59

5891 Midland 4 ENE Midland 2,776 102°01' 32°01' 10/1947 10/1953 78 7

5897 Midlothian 2 Ellis 750 96°59' 32°29' 01/1974 12/2002 87 28

5957 Mineral Wells 1 SSW Palo Pinto 845 98°07' 32°47' 03/1952 12/2002 88 51

5958 Mineral Wells FCWOS Ap. Palo Pinto 930 98°03' 32°46' 03/1948 11/1952 90 5

5973 Mission Pumping Station Hidalgo1 131 98°19' 26°12' 10/1947 05/1950 63 4

5996 Moline Mills 1,385 98°19' 31°24' 05/1940 12/2002 93 63

6017 Monte Alto Willacy1 39 97°58' 26°33' 10/1947 05/1950 64 4

6024 Montgomery Montgomery 320 95°41' 30°23' 03/1940 06/1948 47 9

6050 Monkstown Fannin 480 95°56' 33°48' 12/1972 08/1973 16 2

6104 Mount Locke Jeff Davis 6,790 104°01' 30°42' 06/1948 12/2002 92 55

6108 Mount Pleasant Titus 425 95°00' 33°10' 02/1940 12/2002 84 62

6136 Muleshoe 2 Bailey 3,800 102°44' 34°13' 06/1941 12/2002 86 62

6166 Myers Ranch Val Verde1 11,826 100°49' 29°48' 04/1940 12/1941 79 2

6176 Nacogdoches Nacogdoches 312 94°39' 31°36' 12/1947 10/1961 78 9

6177 Nacogdoches Nacogdoches 435 94°38' 31°37' 10/1947 12/2002 82 51

6210 Navarro Mills Dam Navarro 454 96°42' 31°57' 08/1962 12/2002 94 41

6211 Navasota Grimes1 220 96°07' 30°23' 11/1941 06/1952 57 12

6270 New Boston Bowie 345 94°24' 33°27' 10/1973 12/2002 89 30

6275 New Braunfels Airport Guadalupe 645 98°02' 29°42' 09/2002 12/2002 0 1

6276 New Braunfels Comal 710 98°07' 29°44' 04/1957 06/1957 22 1

6335 New Summerfield 2 W Cherokee 380 95°18' 31°58' 08/1962 12/2002 88 41

6434 North Fork Dam Williamson 883 97°43' 30°41' 08/1980 06/1981 27 2

6504 O’Donnell Lynn 3,046 101°49' 32°58' 05/1940 12/2002 92 63

6558 Oklaunion Wilbarger1 11,245 99°05' 34°08' 02/1940 09/1940 64 1

6615 Old 8 Camp 6666 King 1,790 100°11' 33°33' 09/1973 10/2000 67 23

6660 Oplin near SCS no. 174 Callahan1 2,001 99°31' 32°10' 02/1940 11/1943 70 4

6663 Orange Dupont Orange1 10 93°45' 30°04' 11/1948 12/1952 25 5

6734 Ozona 1 SSW Crockett 2,340 101°12' 30°41' 04/1940 12/2002 91 12

6736 Ozona 8 WSW Crockett 2,550 101°20' 30°40' 02/1951 10/2002 94 52

6740 Paducah Cottle 1,900 100°18' 34°00' 04/1957 06/1957 21 1

6750 Palacios Municipal Airport Matagorda 12 96°15' 28°43' 08/1940 12/2002 55 5

6757 Palestine 2 NE Anderson 465 95°36' 31°46' 02/1940 12/2002 91 63

6775 Pampa Weather Bureau Airport Gray 3,232 100°58' 35°32' 01/1941 09/1953 86 13

6776 Pampa 2 Gray 3,150 100°58' 35°33' 10/1953 12/2002 91 50

Table 3. National Weather Service hourly rainfall stations in Texas—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record

Footnote at end of table.
Table 3 61

6788 Panola 1 WSW Panola 322 94°07' 32°21' 05/1970 08/1973 73 4

6792 Panther Junction Brewster 3,740 103°12' 29°19' 03/1955 12/2002 95 48

6794 Paris Lamar 542 95°34' 33°40' 04/1957 06/1957 22 1

6834 Pat Mayse Dam Lamar 495 95°31' 33°52' 10/1966 12/2002 88 37

6893 Pecos 8 W Reeves 2,724 103°37' 31°22' 03/1960 12/2002 95 43

6935 Pep Hockley 3,660 102°33' 33°48' 08/1956 12/2002 93 47

6981 Pettit 4 NE Hockley1 3,553 102°28' 33°44' 06/1941 07/1956 37 16

7020 Pierce 1 E Wharton 105 96°11' 29°14' 10/1940 04/1943 60 4

7060 Pitchfork Ranch Dickens 1,945 100°31' 33°35' 04/1971 12/2002 73 32

7066 Pittsburg 5 S Camp 345 94°56' 32°55' 05/1949 12/2002 92 54

7074 Plains Yoakum 3,675 102°49' 33°11' 07/1942 03/2002 91 61

7097 Pleak Fort Bend1 79 95°47' 29°28' 10/1947 01/1951 37 5

7116 Plemons Hutchinson1 2,802 101°20' 35°46' 01/1940 01/1959 68 20

7140 Point Comfort Calhoun 20 96°33' 28°39' 11/1957 12/2002 91 46

7173 Port Arthur Weath. Bureau City Jefferson 10 93°56' 29°52' 01/1940 02/1953 87 14

7174 Port Arthur Airport Jefferson 16 94°01' 29°57' 12/1947 12/2002 95 55

7213 Post Oak School Lee 318 96°43' 30°16' 08/1963 05/1981 76 19

7243 Prairie Mountain Llano 1,448 98°53' 30°35' 05/1940 12/2002 89 63

7262 Presidio Presidio 2,560 104°20' 29°33' 07/1948 09/1951 66 4

7274 Priddy 1 NE Mills 1,470 98°29' 31°40' 01/1984 11/1997 69 14

7300 Proctor Reservoir Comanche 1,221 98°30' 31°58' 07/1973 12/2002 88 30

7311 Pulliam near SCS no. 10 Tom Green1 1,932 100°32' 31°32' 01/1940 10/1940 68 1

7363 Quitman Wood 375 95°26' 32°47' 04/1957 06/1957 18 1

7422 Randolph Field Bexar 760 98°16' 29°32' 11/1940 12/2002 89 63

7431 Rankin Upton 2,615 101°56' 31°13' 11/1948 12/2002 92 53

7481 Red Bluff Dam Reeves 2,800 103°55' 31°54' 07/1942 01/2002 86 58

7497 Red Rock Bastrop 520 97°27' 29°58' 03/1967 12/2000 86 28

7498 Red Rock 3 SW Bastrop 502 97°29' 29°57' 02/1970 09/1975 83 6

7499 Red Springs 2 ESE Baylor 1,370 99°23' 33°36' 03/1943 12/2002 88 60

7531 Regency Mills1 11,338 98°49' 31°26' 06/1942 02/1949 46 7

7534 Reiley Ranch Sulton1 2,451 100°15' 30°38' 05/1940 01/1953 55 13

7556 Reno Parker 770 97°34' 32°57' 08/1946 12/2002 92 57

7594 Richmond Fort Bend 101 95°45' 29°35' 09/1967 12/2002 88 36

7596 Richmond 2 Fort Bend1 102 95°45' 29°35' 09/1964 08/1967 71 4

7608 Riesel McLennan1 469 96°53' 31°29' 01/1940 06/1968 92 29

7622 Rio Grande City 1 SE Starr 172 98°49' 26°23' 02/1942 07/1942 47 1

7700 Rockland 1 WSW Jasper 88 94°24' 31°01' 01/1940 03/1975 90 36

7706 Rocksprings 1 S Edwards 2,394 100°12' 30°00' 04/1940 07/2002 83 58

7718 Rocksprings 2 Edwards 2,421 100°12' 30°01' 06/1971 04/1975 47 5

7745 Rose Hill Dallas1 1435 96°33' 32°48' 01/1940 01/1951 76 9

7922 Salt Flat CAA Airport Hudspeth1 3,717 105°05' 31°45' 07/1942 03/1955 82 14

7936 Sam Rayburn Dam Jasper 189 94°06' 31°03' 01/1968 12/2002 88 35

7943 San Angelo Mathis Airport Tom Green 1,916 100°29' 31°21' 10/1948 12/2002 98 55

7944 San Angelo WFO Tom Green 1,900 100°29' 31°22' 01/1940 12/1940 98 1

7945 San Antonio International Ap. Bexar 809 98°28' 29°32' 01/1941 12/2002 98 62

7947 San Antonio 8 NNE Bexar 788 98°27' 29°31' 05/1997 12/2002 81 6

7948 San Antonio Nursery Bexar1 591 98°28' 29°18' 05/1944 09/1968 90 25

7951 San Augustine San Augustine 310 94°06' 31°30' 08/1962 09/1978 90 17

7953 San Benito Filter Plant Cameron1 39 97°38' 26°08' 10/1947 05/1950 63 4

7981 San Manuel Hidalgo 75 98°07' 26°34' 09/1941 07/1954 57 14

7990 San Perlita Willacy1 20 97°36' 26°30' 10/1947 05/1950 63 4

7992 San Saba San Saba 1,195 98°43' 31°11' 04/1957 06/1957 20 1

7997 Sanatorium Tom Green1 2,031 100°39' 31°37' 04/1949 03/1953 63 5

7999 Sanatorium 4 E Tom Green1 2,103 100°35' 31°37' 01/1952 08/1953 25 2

8022 Sanderson Terrell 2,855 102°23' 30°08' 08/1942 02/1948 40 7

Table 3. National Weather Service hourly rainfall stations in Texas—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record

Footnote at end of table.
62 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

8023 Sanderson 5 NNW Terrell 3,080 102°25' 30°12' 10/1947 12/2002 94 56

8047 Santa Anna Coleman 1,745 99°18' 31°44' 05/1940 12/2002 86 63

8060 Santa Rosa Cameron1 49 97°50' 26°15' 10/1947 05/1950 65 4

8062 Santo Palo Pinto1 833 98°14' 32°37' 10/1941 07/1942 37 2

8068 Saragosa Reeves1 2,992 103°39' 31°04' 07/1942 12/1945 39 3

8081 Sarita 7 E Kenedy 38 97°41' 27°13' 09/1941 12/2002 91 62

8089 Satsuma Harris 112 95°37' 29°54' 10/1947 05/1948 32 2

8221 Seymour Baylor 1,287 99°16' 33°35' 04/1957 06/1957 21 1

8252 Sheffield Pecos 2,170 101°49' 30°41' 07/1942 12/2002 93 61

8265 Sheperd 2 SW San Jacinto1 180 95°00' 30°29' 04/1940 01/1965 90 26

8289 Shinnery Store Collingsworth1 1,942 100°00' 34°54' 08/1944 09/1949 21 5

8305 Sierra Blanca 2 E Hudspeth 4,590 105°21' 31°10' 07/1942 12/2002 82 59

8335 Simms 4 WNW Bowie 322 94°34' 33°22' 03/1944 10/1973 90 30

8400 Smith Brothers Ranch Jeff Davis1 15,351 104°06' 30°29' 01/1942 01/1949 77 8

8445 Somerville Burleson1 249 96°31' 30°21' 03/1940 10/1963 91 24

8446 Somerville Dam Burleson 263 96°32' 30°20' 10/1963 03/1994 91 32

8451 Sonora Valiant Ranch Sutton1 2,441 100°12' 30°39' 02/1953 03/1961 73 9

8531 Spicewood Burnet 850 98°09' 30°28' 03/1968 12/2002 89 35

8541 Spring Branch 3 SSW Comal 1,190 98°26' 29°50' 01/1995 07/1997 74 3

8544 Spring Branch 2 SE Comal 1,119 98°22' 29°51' 05/1988 12/2002 76 13

8545 Spring Creek San Saba1 11,310 98°48' 31°20' 09/1941 03/1942 24 2

8563 Springtown 4 S Parker 1,053 97°40' 32°54' 11/1977 12/2002 91 26

8566 Spur Dickens 2,297 100°52' 33°28' 11/1947 03/1964 76 18

8583 Stamford 1 Jones 1,640 99°48' 32°56' 10/1947 12/2002 75 24

8584 Stamford 2 Jones 1,601 99°48' 32°57' 01/1940 04/1980 87 40

8623 Stephenville 1 N Erath 1,309 98°11' 32°14' 07/1940 12/2002 90 37

8625 Stephenville 6 SW Erath 1,450 98°19' 32°10' 10/1947 07/1975 94 29

8630 Sterling City Sterling 2,265 100°58' 31°50' 02/1977 12/2002 84 26

8631 Sterling City 8 NE Sterling 2,710 100°52' 31°55' 05/1949 02/1977 83 29

8646 Stillhouse Hollow Dam Bell 706 97°31' 31°02' 05/1964 12/2002 89 39

8647 Stinnett Hutchinson 3,130 101°27' 35°50' 01/1959 04/1992 86 33

8677 Stony Denton1 702 97°20' 33°14' 09/1946 01/1954 50 9

8696 Strawn 8 NNE Palo Pinto 1,180 98°28' 32°39' 04/1957 06/1957 22 1

8743 Sulphur Springs Hopkins 495 95°38' 33°09' 10/1941 12/2002 92 61

8761 Sunray 4 SW Moore 3,543 101°52' 35°58' 05/1955 08/1984 83 30

8778 Swan 4 NW Smith 450 95°25' 32°27' 08/1957 12/2002 88 46

8845 Tarpley Bandera 1,404 99°17' 29°40' 03/1940 12/2002 91 63

8859 Tatum Rusk 269 94°31' 32°18' 01/1940 08/1975 90 36

8898 Telephone Fannin 541 96°01' 33°47' 09/1959 12/1972 89 14

8908 Temple SCS 7R Bell1 1595 97°21' 31°06' 01/1940 09/1940 67 1

8910 Temple Bell 635 97°19' 31°05' 04/1957 06/1957 22 1

8911 Temple 3 SE Bell1 650 97°21' 31°03' 10/1947 06/1968 74 20

8924 Terlingua Brewster1 2,592 103°33' 29°18' 07/1942 02/1963 81 22

8929 Terrell Kaufman 515 96°17' 32°46' 04/1957 06/1957 21 1

8942 Texarkana Bowie 390 94°05' 33°25' 09/1968 12/2002 89 35

8944 Texarkana Dam Cass 282 94°10' 33°18' 11/1955 05/1972 90 18

8996 Thompsons 3 WSW Fort Bend 70 95°37' 29°28' 05/1957 12/2002 88 46

9014 Throckmorton Throckmorton 1,370 99°11' 33°10' 04/1957 06/1957 19 1

9037 Tinnin Ranch Reeves1 3,232 103°59' 31°19' 07/1942 12/1969 92 28

9106 Toyah Reeves 2,812 103°48' 31°18' 12/1969 05/1977 73 9

9107 Toyahvale Reeves1 3,343 103°46' 30°56' 01/1946 02/1949 33 4

9129 Tri City Airport Hidalgo1 200 98°21' 26°24' 10/1947 05/1950 65 4

9163 Truscott 3 W Knox 1,571 99°51' 33°45' 02/1940 12/2002 85 63

9213 Tyler Pounds Field Smith 544 95°24' 32°21' 08/1948 12/2002 46 5

Table 3. National Weather Service hourly rainfall stations in Texas—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record

Footnote at end of table.
Table 3 63

1 County name or elevation not available in Hydrosphere (2003); supplied by authors.

9214 Tyler 5 NE Smith 489 95°16' 32°24' 04/1957 06/1957 22 1

9222 Uhland near SCS Lockhart Caldwell1 1615 97°47' 29°57' 02/1940 09/1943 89 4

9248 Upland Upton1 2,602 102°00' 31°23' 08/1942 07/1948 67 7

9266 Uvalde near SCS no. 1 Maverick1 850 100°08' 29°04' 01/1940 12/1941 95 2

9270 Valentine Jeff Davis 4,449 104°29' 30°35' 05/1959 12/2002 94 44

9295 Van Horn Culberson 4,065 104°50' 31°02' 07/1948 09/1951 60 4

9304 Vancourt Tom Green 1,903 100°11' 31°21' 12/1947 12/1947 3 1

9307 Vancourt 5 SW Tom Green1 1,903 100°14' 31°21' 01/1940 01/1949 78 10

9328 Vega near SCS 4R Oldham1 3,934 102°25' 35°19' 03/1940 02/1944 78 5

9329 Vega SCS 101-2-46 Oldham1 4,022 102°26' 35°15' 01/1941 05/1941 36 1

9345 Veribest near SCS no. 8 Tom Green1 1,821 100°15' 31°27' 01/1940 03/1940 11 1

9363 Victoria Weather Bureau Ap. Victoria1

 115 97°05' 28°47' 01/1946 06/1961 91 16

9364 Victoria ASOS Victoria 115 96°55' 28°51' 03/1940 12/2002 98 48

9365 Victoria CP&L Victoria 61 97°00' 28°47' 06/1948 02/1949 32 2

9371 View near SCS Abilene Haskell1 1,752 99°52' 33°22' 01/1940 08/1943 83 4

9417 Waco Dam McLennan 495 97°13' 31°36' 02/1965 12/2002 91 38

9419 Waco Regional Airport McLennan 500 97°13' 31°36' 02/1941 12/2002 98 62

9435 Walcott Deaf Smith 4,114 102°59' 34°56' 05/1971 02/1975 35 5

9491 Washington State Park Washington 215 96°09' 30°19' 06/1952 12/2002 87 51

9499 Water Valley Tom Green 2,120 100°43' 31°40' 10/1953 12/2002 92 50

9522 Waxahachie Ellis 630 96°51' 32°25' 04/1957 06/1957 19 1

9527 Wayside Armstrong 3,400 101°32' 34°47' 06/1941 12/2002 81 62

9532 Weatherford Parker 955 97°46' 32°44' 10/1947 12/2002 94 56

9544 Webster Ranch Schleicher1 2,192 100°11' 30°53' 09/1961 12/1961 13 1

9565 Wellington Collingsworth 2,040 100°12' 34°50' 10/1949 12/2002 88 41

9570 Wellington 2 Collingsworth 2,031 100°13' 34°51' 08/1971 01/1983 78 13

9574 Wellington 11 SE Collingsworth 1,910 100°02' 34°48' 02/1983 05/1983 33 1

9588 Weslaco 2 E Hidalgo 75 97°58' 26°09' 10/1947 12/2002 86 53

9665 Wheelock Robertson 420 96°23' 30°54' 06/1940 12/2002 91 63

9715 Whitney Dam Bosque 574 97°22' 31°51' 06/1952 12/2002 96 51

9729 Wichita Falls Municipal Ap. Wichita 1,017 98°29' 33°58' 05/1940 12/2002 98 63

9772 William Harris Reservoir Brazoria 39 95°33' 29°15' 03/1948 03/1964 86 17

9814 Wimberley 2 Hays 1,112 98°04' 29°58' 01/1940 06/1984 36 2

9815 Wimberley 1 NW Hays 830 98°03' 30°00' 02/1989 12/2002 92 14

9816 Winchell 1 WNW Brown 1,381 99°11' 31°29' 02/1949 03/1953 44 5

9817 Winchell Brown 1,460 99°10' 31°27' 04/1953 12/2002 81 41

9829 Wink Winkler 2,790 103°09' 31°46' 07/1942 04/1997 93 51

9830 Wink FAA Airport Winkler 2,807 103°12' 31°46' 10/1947 11/1952 81 6

9858 Wolf Creek Dam Ochiltree 2,703 100°40' 36°14' 05/1941 10/1974 93 34

9893 Woodson Throckmorton 1,263 99°03' 33°01' 08/1941 12/2002 90 62

9916 Wright Patman Lock and Dam Cass 282 94°10' 33°18' 11/1981 12/2002 74 22

9976 Zapata 3 SW Zapata 320 99°15' 26°52' 03/1940 12/2002 90 63

Table 3. National Weather Service hourly rainfall stations in Texas—Continued.

Station

no. Station name County

Elevation

(feet above

NGVD 29)

Longitude

(degrees/

minutes)

Latitude

(degrees/

minutes)

Beginning

month/

year

Ending

month/

year

Percentage

of record

with data

Years

with

record
64 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Table 4

Table 5

Table 4. Selected storm statistics for station 4570 Jayton, Texas, illustrating influence of minimum interevent time on statistics. 

Table 5. Regionwide or statewide record-length, weighted-average storm depth L-moments. 

[L-CV, coefficient of L-variation (L-scale/mean); --, dimensionless] 

Statistic (units)

Minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours

Mean storm interevent time (days) 8.50 9.04 9.81 10.70 11.48 13.34 14.96

Mean storm depth (inches) .445 .474 .516 .566 .611 .724 .831

90th-percentile storm depth (inches) 1.10 1.20 1.30 1.40 1.50 1.85 2.10

50th-percentile storm duration (hours) 1 2 3 3 4 6 10

Region or

State and 

minimum 

interevent 

time

(hours)

Record

length

(hours)

Storm depth L-moments

Mean

(inches)

L-CV

(--)

L-skew

(--)

L-kurtosis

(--)

Tau5

(--)

Eastern New Mexico (92 stations)

6 18,755,163 0.276 0.554 0.530 0.305 0.178

8 18,755,163 .291 .555 .515 .298 .177

12 18,755,163 .315 .558 .508 .291 .177

18 18,754,611 .346 .563 .502 .284 .175

24 18,754,611 .386 .567 .495 .276 .172

48 18,745,803 .474 .574 .484 .263 .164

72 18,745,803 .556 .582 .484 .261 .162

Oklahoma (149 stations)

6 33,226,434 .523 .582 .485 .249 .154

8 33,226,434 .555 .579 .477 .244 .153

12 33,223,650 .602 .576 .469 .239 .153

18 33,223,650 .660 .574 .458 .233 .150

24 33,223,650 .712 .572 .452 .230 .149

48 33,221,682 .874 .571 .442 .226 .145

72 33,221,682 1.05 .568 .432 .220 .140

Texas (533 stations)

6 103,788,249 .489 .601 .506 .272 .168

8 103,788,249 .518 .598 .500 .267 .168

12 103,788,249 .563 .595 .492 .263 .167

18 103,785,321 .619 .593 .484 .258 .167

24 103,785,321 .675 .590 .477 .254 .166

48 103,773,105 .821 .586 .463 .246 .162

72 103,771,089 .964 .581 .452 .238 .156
Table 6 65

Table 6 Table 6. Regionwide or statewide record-length, weighted-average mean storm interevent time and storm duration L-moments.

[L-CV, coefficient of L-variation (L-scale/mean); --, dimensionless] 

Region or

State and

minimum

interevent

time

(hours)

Record

length

(hours)

Mean

interevent

time

(days)

Storm duration L-moments

Mean

(hours)

L-CV

(--)

L-skew

(--)

L-kurtosis

(--)

Tau5

(--)

Eastern New Mexico (92 stations)

6 18,755,115 7.90 4.12 0.522 0.511 0.244 0.152

8 18,754,611 8.31 4.71 .546 .516 .249 .153

12 18,754,611 8.94 5.87 .584 .529 .258 .153

18 18,754,611 9.75 7.90 .618 .525 .241 .128

24 18,754,611 10.71 11.17 .632 .499 .211 .111

48 18,745,803 12.68 21.71 .659 .494 .209 .114

72 18,745,803 14.36 35.79 .674 .500 .218 .122

Oklahoma (149 stations)

6 33,223,650 6.34 5.02 .516 .445 .196 .131

8 33,223,650 6.70 5.70 .532 .447 .197 .128

12 33,223,650 7.22 6.99 .558 .454 .201 .125

18 33,223,650 7.85 9.02 .582 .456 .195 .114

24 33,223,650 8.39 11.33 .598 .457 .193 .111

48 33,221,682 9.96 21.77 .638 .473 .200 .107

72 33,221,682 11.41 37.79 .649 .463 .187 .103

Texas (533 stations)

6 103,782,513 7.39 4.94 .525 .477 .231 .155

8 103,782,513 7.80 5.62 .545 .484 .236 .154

12 103,782,513 8.41 6.91 .576 .495 .239 .147

18 103,782,513 9.17 9.02 .604 .496 .228 .129

24 103,782,513 9.89 11.68 .617 .484 .211 .117

48 103,771,785 11.62 21.57 .646 .482 .203 .109

72 103,769,769 13.08 35.39 .657 .475 .195 .107
66 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Table 7 Table 7. Dimensionless gamma and kappa distributions fit to record-length, weighted-average storm depth L-moments.

[--, dimensionless] 

1 Parameters defined in “Glossary” at end of report. 

Region or

State and

minimum

interevent

time

(hours)

Gamma distribution parameters1

 Kappa distribution parameters1

θ

(--)

β

(--)

ξ

(--)

α

(--)

κ

(--)

h

(--)

Eastern New Mexico (92 stations)

6 0.7592 1.317 -0.4607 0.8958 -0.2272 1.930

8 .7554 1.324 -.3352 .8498 -.2355 1.709

12 .7441 1.344 -.3481 .8744 -.2231 1.690

18 .7255 1.378 -.3824 .9116 -.2079 1.696

24 .7111 1.406 -.4173 .9526 -.1903 1.701

48 .6864 1.457 -.4865 1.030 -.1596 1.720

72 .6593 1.517 -.5445 1.071 -.1506 1.759

Oklahoma (149 stations)

6 .6593 1.517 -.8242 1.275 -.08913 2.023

8 .6694 1.494 -.7607 1.253 -.08716 1.945

12 .6795 1.472 -.7030 1.234 -.08439 1.871

18 .6864 1.457 -.6196 1.203 -.08368 1.761

24 .6934 1.442 -.5706 1.183 -.08398 1.701

48 .6969 1.435 -.4840 1.143 -.08812 1.588

72 .7075 1.413 -.4357 1.133 -.08178 1.518

Texas (533 stations)

6 .5991 1.669 -.7991 1.186 -.1422 2.041

8 .6083 1.644 -.7746 1.188 -.1354 2.001

12 .6175 1.619 -.6883 1.151 -.1389 1.896

18 .6238 1.603 -.6336 1.135 -.1367 1.818

24 .6333 1.579 -.5790 1.115 -.1359 1.747

48 .6462 1.548 -.4868 1.086 -.1326 1.617

72 .6627 1.509 -.4479 1.087 -.1210 1.556
Table 8 67

Table 8

Table 9

Table 8. Dimensionless gamma and kappa distributions fit to record-length, weighted-average storm duration L-moments.

[--, dimensionless]

1 Parameters defined in “Glossary” at end of report. 

Table 9. Summary statistics and diagnostic statistics of mean storm interevent time maps for each minimum interevent time.

[Record length used as weight factors. Bias computed as observed value for station minus predicted value from map. wSD, weighted standard deviation; RwMSE, 

root-weighted-mean-square error] 

Region or

State and

minimum

interevent

time

(hours)

Gamma distribution parameters1 Kappa distribution parameters1

θ

(--)

β

(--)

ξ

(--)

α

(--)

κ

(--)

h

(--)

Eastern New Mexico (92 stations)

6 0.8931 1.120 -1.586 1.793 0.04985 2.847

8 .7906 1.265 -1.702 1.848 .03993 2.877

12 .6527 1.532 -2.115 2.087 .04684 3.075

18 .5497 1.819 -3.292 3.070 .1684 3.431

24 .5119 1.953 -3.796 3.742 .2616 3.355

48 .4455 2.245 -3.694 3.655 .2430 3.237

72 .4118 2.428 -3.485 3.389 .1999 3.189

Oklahoma (149 stations)

6 .9209 1.086 -1.081 1.650 .08616 2.213

8 .8487 1.178 -1.169 1.714 .08709 2.237

12 .7441 1.344 -1.349 1.832 .08765 2.311

18 .6593 1.517 -1.778 2.198 .1388 2.488

24 .6083 1.644 -1.999 2.385 .1587 2.557

48 .4965 2.014 -2.656 2.865 .1869 2.820

72 .4692 2.131 -3.009 3.267 .2413 2.857

Texas (533 stations)

6 .8795 1.137 -0.9128 1.384 -.01524 2.214

8 .7946 1.259 -1.027 1.444 -.01941 2.277

12 .6795 1.472 -1.395 1.683 .006370 2.496

18 .5901 1.695 -2.073 2.224 .08957 2.794

24 .5525 1.810 -2.483 2.648 .1583 2.865

48 .4765 2.099 -3.108 3.215 .2159 3.010

72 .4501 2.222 -3.306 3.449 .2439 3.005

Minimum

interevent

time

(hours)

No. of

stations

Weighted-mean 

storm interevent 

time for

study area

(days)

wSD of

storm

interevent

time for

study area

(days)

Weighted-mean

bias of storm 

interevent 

time map

(days)

RwMSE

of storm

interevent

time map

(days)

Difference

between

wSD and

RwMSE

(percent)

6 766 7.22 2.59 -0.042 1.76 -32.0

8 766 7.62 2.69 -.046 1.84 -31.6

12 766 8.22 2.84 -.045 1.93 -32.0

18 766 8.95 3.09 -.045 2.15 -30.4

24 765 9.67 3.30 -.053 2.31 -30.0

48 765 11.38 3.74 -.069 2.63 -29.7

72 765 12.87 4.12 -.087 3.01 -26.9
68 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Table 10

Table 11

Table 12

Table 10. Summary statistics and diagnostic statistics of mean storm depth maps for each minimum interevent time.

[Record length used as weight factors. Bias computed as observed value for station minus predicted value from map. wSD, weighted standard deviation; RwMSE, 

root-weighted-mean-square error] 

Table 11. Summary statistics and diagnostic statistics of mean storm duration maps for each minimum interevent time.

[Record length used as weight factors. Bias computed as observed value for station minus value predicted from map. wSD, weighted standard deviation; RwMSE, 

root-weighted-mean-square error] 

Table 12. Mean storm interevent time by county for eastern New Mexico.

Minimum

interevent

time

(hours)

No. of

stations

Weightedmean storm 

depth for

study area

(inches)

wSD of

storm depth

for study area

(inches)

Weightedmean bias of

storm depth

map

(inches)

RwMSE of

storm depth

map

(inches)

Difference

between

wSD and

RwMSE

(percent)

6 755 0.470 0.114 -5.19e-5 0.032 -71.9

8 754 .498 .124 -6.56e-5 .033 -73.4

12 753 .541 .136 -2.99e-5 .036 -73.5

18 751 .595 .151 4.14e-5 .039 -74.2

24 751 .648 .163 1.03e-4 .043 -73.6

48 745 .790 .207 8.95e-5 .059 -71.5

72 744 .933 .261 8.48e-5 .076 -70.9

Minimum

interevent

time

(hours)

No. of

stations

Weightedmean storm

duration for

study area

(hours)

wSD of

storm

duration for

study area

(hours)

Weightedmean bias of

storm duration

map

(hours)

RwMSE

of storm

duration

map

(hours)

Difference

between

wSD and

RwMSE

(percent)

6 753 4.86 0.887 0.006 0.600 -32.4

8 752 5.53 .975 .004 .636 -34.8

12 751 6.80 1.12 .004 .695 -37.9

18 751 8.88 1.39 .008 .816 -41.3

24 751 11.5 1.76 .008 1.03 -41.5

48 745 21.6 3.65 .003 2.01 -44.9

72 744 35.9 7.00 -.004 3.63 -48.1

County Mean storm interevent time (days) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours

Chaves 9.27 9.81 10.5 11.4 12.3 14.3 15.9

Colfax 6.48 6.79 7.30 8.02 9.04 11.1 12.8

Curry 8.68 9.19 9.77 10.6 11.6 13.7 15.6

DeBaca 9.39 9.92 10.5 11.2 12.0 13.9 15.6

Eddy 10.6 11.1 11.9 12.8 13.7 15.7 17.5

Guadalupe 8.20 8.63 9.23 10.0 10.9 13.0 14.7

Harding 8.42 8.75 9.24 9.93 11.0 13.1 14.9

Lea 10.2 10.8 11.5 12.4 13.2 15.3 16.9

Lincoln 7.36 7.79 8.44 9.20 10.2 12.2 13.9

Los Alamos 6.47 6.86 7.47 8.23 9.10 11.0 12.6

Mora 6.35 6.70 7.21 7.95 9.00 11.1 12.8

Otero 9.40 9.96 10.6 11.5 12.7 14.9 16.9

Quay 9.70 10.1 10.7 11.6 12.8 15.3 17.5

Roosevelt 8.79 9.32 9.91 10.7 11.6 13.5 15.2

San Miguel 7.15 7.51 8.04 8.81 9.85 11.9 13.8

Santa Fe 6.54 6.93 7.51 8.27 9.14 10.9 12.5

Taos 5.93 6.27 6.80 7.52 8.54 10.7 12.4

Torrance 7.20 7.59 8.20 8.99 9.87 11.8 13.4

Union 8.19 8.39 8.97 9.69 10.8 12.9 14.6
Table 13 69

Table 13

Table 14

Table 13. Mean storm depth by county for eastern New Mexico. 

Table 14. Mean storm duration by county for eastern New Mexico. 

County

Mean storm depth (inches) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours

Chaves 0.294 0.311 0.336 0.366 0.401 0.476 0.543

Colfax .247 .261 .280 .311 .356 .454 .547

Curry .333 .350 .377 .412 .451 .543 .634

DeBaca .280 .294 .315 .339 .367 .434 .498

Eddy .308 .322 .347 .375 .405 .470 .532

Guadalupe .276 .290 .313 .342 .378 .460 .536

Harding .280 .293 .312 .339 .383 .473 .553

Lea .349 .367 .394 .427 .461 .541 .609

Lincoln .269 .285 .312 .344 .388 .487 .580

Los Alamos .222 .236 .259 .288 .322 .402 .480

Mora .252 .266 .288 .321 .369 .471 .568

Otero .258 .272 .296 .325 .363 .444 .523

Quay .316 .330 .353 .383 .422 .512 .593

Roosevelt .339 .356 .384 .418 .455 .543 .626

San Miguel .272 .285 .308 .340 .385 .481 .572

Santa Fe .221 .235 .256 .285 .319 .395 .471

Taos .220 .234 .255 .284 .328 .427 .521

Torrance .239 .252 .274 .303 .336 .413 .486

Union .272 .285 .303 .330 .376 .467 .551

County

Mean storm duration (hours) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours

Chaves 4.06 4.65 5.78 7.62 10.3 18.7 29.7

Colfax 4.08 4.69 5.76 7.94 12.2 25.3 42.9

Curry 4.13 4.67 5.75 7.63 10.3 19.3 32.5

DeBaca 4.20 4.74 5.73 7.25 9.43 17.4 28.8

Eddy 3.78 4.23 5.28 6.85 9.04 16.0 26.1

Guadalupe 4.04 4.58 5.65 7.52 10.5 20.2 33.3

Harding 4.12 4.59 5.50 7.29 10.9 21.7 35.6

Lea 3.90 4.43 5.47 7.10 9.31 16.9 26.5

Lincoln 4.31 4.99 6.29 8.44 12.0 23.9 39.5

Los Alamos 3.82 4.47 5.79 8.04 11.5 23.0 39.0

Mora 4.13 4.74 5.91 8.26 12.6 25.8 43.3

Otero 4.38 4.97 6.23 8.23 11.5 21.4 35.3

Quay 4.09 4.56 5.52 7.26 10.1 19.4 32.0

Roosevelt 3.98 4.52 5.60 7.38 9.83 18.3 30.3

San Miguel 3.96 4.49 5.59 7.71 11.5 22.8 38.4

Santa Fe 4.22 4.90 6.17 8.48 11.9 23.0 38.7

Taos 3.97 4.60 5.85 8.22 12.6 27.0 45.7

Torrance 4.19 4.80 6.00 8.15 11.3 21.8 36.2

Union 4.22 4.73 5.62 7.42 11.4 23.0 38.1
70 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Table 15 Table 15. Mean storm interevent time by county for Oklahoma—Continued.

County

Mean storm interevent time (days) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours

Adair 6.11 6.47 6.94 7.53 8.03 9.57 11.0

Alfalfa 7.21 7.59 8.11 8.73 9.29 11.0 12.6

Atoka 5.52 5.85 6.34 6.94 7.46 8.85 10.1

Beaver 7.88 8.28 8.86 9.59 10.3 12.1 13.7

Beckham 7.59 8.04 8.66 9.46 10.1 12.0 13.6

Blaine 6.65 7.04 7.58 8.19 8.72 10.3 11.8

Bryan 5.88 6.23 6.75 7.36 7.90 9.38 10.7

Caddo 6.73 7.30 7.72 8.35 8.91 10.5 12.0

Canadian 6.05 6.48 7.01 7.60 8.12 9.63 11.1

Carter 6.16 6.60 7.08 7.79 8.35 9.91 11.3

Cherokee 5.95 6.30 6.78 7.38 7.87 9.41 10.9

Choctaw 5.23 5.53 6.00 6.59 7.07 8.38 9.60

Cimarron 8.31 8.64 9.18 9.87 10.8 12.8 14.5

Cleveland 5.59 6.13 6.47 7.05 7.54 9.00 10.4

Coal 5.63 5.98 6.46 7.07 7.59 9.01 10.3

Comanche 6.76 7.17 7.72 8.40 8.98 10.6 12.1

Cotton 7.30 7.47 8.24 8.96 9.55 11.1 12.4

Craig 5.95 6.28 6.75 7.31 7.83 9.32 10.8

Creek 6.23 6.59 7.13 7.77 8.27 10.2 11.8

Custer 6.97 7.32 7.95 8.63 9.22 10.8 12.4

Delaware 6.20 6.55 7.00 7.58 8.10 9.65 11.1

Dewey 7.36 7.77 8.34 9.00 9.61 11.3 12.9

Ellis 7.68 8.09 8.68 9.38 10.0 11.9 13.5

Garfield 6.84 7.23 7.72 8.35 8.88 10.4 11.9

Garvin 5.99 6.32 6.86 7.48 7.99 9.49 10.8

Grady 6.96 7.34 7.95 8.64 9.19 10.9 12.4

Grant 7.00 7.38 7.88 8.49 9.02 10.7 12.3

Greer 8.10 8.61 9.30 10.1 10.8 12.8 14.5

Harmon 9.01 9.56 10.3 11.2 11.9 14.1 15.8

Harper 7.63 8.02 8.59 9.26 9.92 11.7 13.3

Haskell 5.41 5.73 6.23 6.74 7.19 8.50 9.77

Hughes 5.51 5.94 6.36 6.97 7.46 8.95 10.3

Jackson 8.27 8.75 9.54 10.4 11.2 13.0 14.7

Jefferson 6.73 7.14 7.66 8.40 8.99 10.6 12.0

Johnston 5.72 6.16 6.56 7.17 7.68 9.11 10.4

Kay 6.51 6.87 7.37 7.95 8.44 10.0 11.5

Kingfisher 6.58 6.90 7.51 8.13 8.65 10.2 11.6

Kiowa 7.20 7.61 8.28 9.05 9.69 11.4 13.0

Latimer 5.19 5.50 5.98 6.50 6.97 8.27 9.50

Le Flore 5.37 5.67 6.13 6.63 7.09 8.40 9.63

Lincoln 6.53 6.94 7.49 8.16 8.71 10.6 12.3

Logan 6.53 6.83 7.44 8.08 8.60 10.1 11.6

Love 6.30 6.69 7.24 7.95 8.52 10.1 11.5

Major 7.16 7.53 8.07 8.69 9.25 10.9 12.5

Marshall 5.79 6.19 6.63 7.23 7.76 9.18 10.4

Mayes 6.00 6.34 6.82 7.40 7.89 9.43 10.9

McClain 6.13 6.48 7.04 7.67 8.17 9.71 11.1

McCurtain 4.89 5.17 5.61 6.16 6.61 7.86 9.02

McIntosh 5.44 5.79 6.28 6.83 7.29 8.67 9.99

Table 15. Mean storm interevent time by county for Oklahoma.
Table 15 71

Murray 5.95 6.31 6.83 7.48 8.00 9.50 10.8

Muskogee 5.56 5.90 6.38 6.96 7.41 8.84 10.2

Noble 6.42 6.80 7.29 7.90 8.41 9.91 11.3

Nowata 5.57 5.88 6.36 6.89 7.39 8.83 10.2

Okfuskee 5.82 6.18 6.72 7.33 7.85 9.48 10.9

Oklahoma 5.77 6.20 6.68 7.27 7.76 9.27 10.7

Okmulgee 5.68 6.02 6.53 7.11 7.59 9.14 10.6

Osage 5.62 5.96 6.45 6.99 7.44 8.90 10.3

Ottawa 6.01 6.36 6.81 7.37 7.91 9.41 10.9

Pawnee 5.88 6.24 6.77 7.36 7.85 9.53 11.0

Payne 6.54 6.91 7.43 8.06 8.58 10.3 11.8

Pittsburg 5.41 5.77 6.27 6.85 7.34 8.71 10.0

Pontotoc 5.74 6.10 6.60 7.21 7.71 9.21 10.5

Pottawatomie 5.81 6.24 6.71 7.31 7.83 9.43 10.9

Pushmataha 5.01 5.32 5.77 6.33 6.81 8.10 9.29

Roger Mills 7.68 8.10 8.73 9.48 10.2 12.0 13.6

Rogers 5.38 5.69 6.16 6.69 7.16 8.56 9.93

Seminole 5.75 6.11 6.64 7.24 7.77 9.36 10.8

Sequoyah 5.97 6.32 6.82 7.39 7.88 9.35 10.8

Stephens 6.80 7.17 7.68 8.41 8.98 10.5 11.9

Texas 8.24 8.61 9.20 9.91 10.7 12.5 14.2

Tillman 8.12 8.50 9.33 10.2 11.0 12.8 14.4

Tulsa 5.35 5.65 6.12 6.64 7.06 8.45 9.79

Wagoner 5.41 5.71 6.20 6.77 7.20 8.62 10.0

Washington 5.41 5.71 6.22 6.76 7.21 8.65 9.99

Washita 7.02 7.36 8.03 8.77 9.36 11.0 12.6

Woods 7.41 7.79 8.33 8.97 9.58 11.3 12.9

Woodward 7.55 7.93 8.48 9.13 9.78 11.6 13.2

Table 15. Mean storm interevent time by county for Oklahoma—Continued.

County

Mean storm interevent time (days) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
72 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Table 16 Table 16. Mean storm depth by county for Oklahoma—Continued.

County

Mean storm depth (inches) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours

Adair 0.584 0.619 0.668 0.731 0.786 0.970 1.17

Alfalfa .474 .500 .536 .581 .622 .756 .901

Atoka .612 .650 .709 .783 .850 1.05 1.25

Beaver .385 .405 .435 .473 .510 .614 .722

Beckham .460 .488 .528 .582 .627 .759 .895

Blaine .493 .525 .568 .618 .662 .806 .966

Bryan .600 .638 .694 .763 .828 1.02 1.22

Caddo .516 .548 .595 .648 .697 .850 1.01

Canadian .501 .536 .586 .640 .689 .848 1.02

Carter .555 .591 .643 .713 .771 .944 1.12

Cherokee .578 .614 .665 .730 .784 .972 1.18

Choctaw .623 .663 .722 .801 .869 1.07 1.30

Cimarron .309 .322 .343 .371 .410 .499 .582

Cleveland .506 .540 .592 .651 .702 .872 1.06

Coal .600 .636 .695 .767 .832 1.02 1.22

Comanche .515 .545 .592 .648 .699 .851 1.01

Cotton .531 .561 .603 .660 .709 .842 .979

Craig .555 .588 .635 .692 .749 .924 1.12

Creek .534 .565 .614 .671 .720 .895 1.08

Custer .478 .508 .550 .601 .646 .782 .930

Delaware .582 .615 .661 .722 .778 .959 1.16

Dewey .472 .500 .539 .586 .630 .762 .902

Ellis .422 .445 .479 .521 .562 .682 .801

Garfield .515 .546 .587 .639 .684 .828 .988

Garvin .559 .594 .645 .709 .765 .941 1.12

Grady .540 .571 .622 .682 .732 .894 1.06

Grant .502 .531 .570 .617 .660 .805 .961

Greer .464 .492 .535 .589 .634 .762 .896

Harmon .452 .481 .520 .569 .611 .733 .854

Harper .408 .430 .461 .500 .540 .654 .769

Haskell .612 .651 .712 .777 .837 1.03 1.24

Hughes .563 .600 .658 .727 .787 .983 1.19

Jackson .464 .493 .538 .593 .640 .762 .889

Jefferson .544 .576 .624 .689 .744 .901 1.06

Johnston .572 .608 .661 .729 .788 .967 1.15

Kay .521 .552 .596 .647 .691 .847 1.02

Kingfisher .516 .549 .594 .648 .695 .842 1.01

Kiowa .489 .519 .566 .623 .671 .811 .959

Latimer .615 .654 .716 .786 .852 1.05 1.28

Le Flore .615 .652 .708 .774 .836 1.03 1.25

Lincoln .530 .563 .611 .668 .720 .890 1.07

Logan .528 .561 .606 .662 .711 .862 1.03

Love .549 .582 .635 .701 .758 .926 1.10

Major .476 .503 .541 .587 .629 .762 .906

Marshall .565 .601 .653 .717 .776 .950 1.13

Mayes .575 .610 .660 .721 .776 .961 1.17

McClain .538 .572 .623 .684 .737 .907 1.09

McCurtain .623 .661 .722 .800 .869 1.08 1.31

McIntosh .592 .630 .690 .756 .815 1.01 1.22

Table 16. Mean storm depth by county for Oklahoma.
Table 16 73

Murray 0.554 0.589 0.641 0.708 0.763 0.939 1.12

Muskogee .577 .614 .668 .734 .789 .976 1.19

Noble .529 .561 .606 .662 .710 .864 1.03

Nowata .534 .567 .616 .673 .728 .904 1.10

Okfuskee .555 .590 .646 .710 .768 .958 1.16

Oklahoma .497 .530 .581 .637 .686 .850 1.03

Okmulgee .555 .589 .643 .706 .760 .945 1.15

Osage .526 .559 .610 .667 .714 .887 1.08

Ottawa .559 .591 .637 .695 .752 .926 1.12

Pawnee .532 .565 .616 .674 .723 .899 1.09

Payne .533 .565 .609 .665 .713 .872 1.04

Pittsburg .587 .626 .687 .757 .820 1.01 1.22

Pontotoc .565 .599 .655 .723 .781 .967 1.16

Pottawatomie .535 .570 .623 .685 .741 .922 1.11

Pushmataha .617 .657 .718 .795 .865 1.07 1.30

Roger Mills .453 .478 .517 .566 .611 .739 .867

Rogers .535 .568 .618 .678 .732 .913 1.12

Seminole .553 .589 .645 .711 .770 .963 1.16

Sequoyah .584 .620 .672 .734 .789 .969 1.17

Stephens .556 .588 .633 .700 .753 .909 1.07

Texas .352 .368 .395 .427 .463 .555 .652

Tillman .502 .532 .580 .639 .693 .825 .956

Tulsa .527 .559 .607 .664 .713 .886 1.09

Wagoner .545 .579 .630 .694 .744 .928 1.14

Washington .525 .559 .609 .668 .718 .897 1.09

Washita .485 .515 .558 .614 .660 .798 .947

Woods .468 .502 .544 .584 .709 .837 .468

Woodward .453 .486 .526 .567 .688 .809 .453

Table 16. Mean storm depth by county for Oklahoma—Continued.

County

Mean storm depth (inches) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
74 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Table 17 Table 17. Mean storm duration by county for Oklahoma—Continued.

County

Mean storm duration (hours) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours

Adair 5.28 5.98 7.21 9.21 11.5 22.2 39.1

Alfalfa 5.04 5.67 6.77 8.53 10.6 20.4 35.6

Atoka 5.70 6.44 7.86 10.2 12.8 23.8 40.1

Beaver 4.13 4.68 5.73 7.51 9.70 18.7 32.5

Beckham 4.30 4.94 6.12 8.18 10.4 19.9 34.0

Blaine 4.73 5.45 6.65 8.50 10.6 20.5 36.0

Bryan 5.68 6.44 7.82 10.0 12.6 23.5 39.3

Caddo 4.71 5.41 6.68 8.57 10.7 20.8 35.4

Canadian 4.69 5.47 6.87 8.84 11.1 21.7 37.9

Carter 4.75 5.46 6.77 9.03 11.4 21.8 36.7

Cherokee 5.18 5.89 7.15 9.24 11.5 22.5 40.0

Choctaw 5.39 6.14 7.51 9.90 12.5 23.5 40.6

Cimarron 4.22 4.69 5.61 7.27 10.3 20.4 33.8

Cleveland 5.18 5.96 7.46 9.63 12.0 23.4 40.8

Coal 5.66 6.39 7.83 10.1 12.7 23.6 39.8

Comanche 5.18 5.86 7.17 9.22 11.5 21.6 36.5

Cotton 5.35 6.02 7.19 9.24 11.4 20.3 33.3

Craig 5.57 6.27 7.54 9.52 12.0 22.9 40.0

Creek 5.24 5.93 7.24 9.23 11.4 22.7 39.6

Custer 4.45 5.13 6.33 8.24 10.4 19.9 34.7

Delaware 5.54 6.22 7.40 9.39 11.7 22.5 39.3

Dewey 4.55 5.18 6.33 8.11 10.2 19.8 34.2

Ellis 4.51 5.11 6.23 8.03 10.3 19.9 33.7

Garfield 4.96 5.63 6.74 8.61 10.7 20.2 35.5

Garvin 4.92 5.62 6.91 9.02 11.3 21.9 37.5

Grady 4.82 5.48 6.79 8.82 11.0 21.1 35.8

Grant 4.94 5.59 6.69 8.44 10.4 20.4 35.9

Greer 4.29 4.96 6.19 8.25 10.4 19.6 33.2

Harmon 4.36 5.04 6.21 8.16 10.2 19.2 32.0

Harper 4.50 5.08 6.15 7.91 10.1 19.6 33.5

Haskell 5.30 6.06 7.48 9.48 11.8 22.3 39.5

Hughes 5.06 5.81 7.27 9.56 12.0 23.6 40.7

Jackson 4.40 5.07 6.42 8.49 10.8 19.4 32.4

Jefferson 4.85 5.51 6.76 8.96 11.3 20.9 35.0

Johnston 5.55 6.31 7.69 9.92 12.4 23.1 38.5

Kay 4.87 5.55 6.73 8.54 10.5 20.7 36.7

Kingfisher 4.80 5.53 6.73 8.65 10.7 20.4 35.9

Kiowa 4.63 5.31 6.64 8.73 11.0 20.5 34.9

Latimer 5.45 6.20 7.67 9.82 12.4 23.4 41.0

Le Flore 5.58 6.30 7.67 9.71 12.1 23.1 40.3

Lincoln 4.83 5.54 6.82 8.79 11.0 21.9 38.4

Logan 4.87 5.58 6.77 8.75 10.9 20.6 36.0

Love 4.92 5.62 6.96 9.18 11.6 21.8 36.5

Major 4.95 5.58 6.71 8.48 10.5 20.2 35.2

Marshall 5.56 6.33 7.68 9.83 12.3 22.9 38.1

Mayes 5.35 6.06 7.31 9.33 11.6 22.7 40.2

McClain 4.98 5.70 7.07 9.17 11.4 22.2 38.2

McCurtain 5.70 6.45 7.89 10.3 13.0 24.4 42.4

McIntosh 5.18 5.94 7.38 9.48 11.8 22.7 40.2

Table 17. Mean storm duration by county for Oklahoma.
Table 17 75

Murray 4.93 5.65 6.98 9.16 11.5 22.1 37.5

Muskogee 5.27 6.01 7.37 9.51 11.8 22.8 40.7

Noble 4.80 5.49 6.68 8.61 10.7 20.5 36.2

Nowata 5.39 6.11 7.45 9.46 11.9 23.1 40.7

Okfuskee 4.97 5.70 7.12 9.24 11.7 23.2 40.1

Oklahoma 5.15 5.93 7.41 9.54 11.9 23.0 40.4

Okmulgee 5.22 5.94 7.34 9.45 11.7 23.1 40.6

Osage 5.03 5.75 7.11 9.12 11.2 22.3 39.7

Ottawa 5.67 6.38 7.62 9.61 12.1 22.9 39.9

Pawnee 5.25 5.96 7.37 9.42 11.6 22.7 39.8

Payne 4.96 5.64 6.81 8.74 10.9 21.0 36.7

Pittsburg 5.23 6.01 7.48 9.72 12.2 23.2 40.4

Pontotoc 5.02 5.72 7.14 9.34 11.7 22.8 38.9

Pottawatomie 4.98 5.72 7.15 9.27 11.7 23.1 40.0

Pushmataha 5.40 6.15 7.60 9.96 12.6 24.0 41.6

Roger Mills 4.42 5.04 6.22 8.14 10.4 19.9 33.5

Rogers 5.51 6.26 7.64 9.77 12.2 23.7 42.3

Seminole 4.91 5.64 7.08 9.24 11.7 23.4 40.3

Sequoyah 5.23 5.95 7.25 9.23 11.4 22.0 38.8

Stephens 4.95 5.60 6.74 8.94 11.2 20.6 34.7

Texas 4.06 4.55 5.57 7.23 9.55 18.4 31.9

Tillman 4.81 5.46 6.84 8.98 11.4 20.2 32.7

Tulsa 5.57 6.30 7.67 9.74 12.0 23.3 41.8

Wagoner 5.44 6.19 7.58 9.80 12.0 23.5 42.6

Washington 5.16 5.90 7.28 9.34 11.6 23.0 40.9

Washita 4.48 5.15 6.37 8.43 10.6 20.1 34.7

Woods 4.84 5.44 6.53 8.26 10.4 20.1 34.4

Woodward 4.71 5.30 6.39 8.10 10.3 19.9 33.9

Table 17. Mean storm duration by county for Oklahoma—Continued.

County

Mean storm duration (hours) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
76 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Table 18 Table 18. Mean storm interevent time by county for Texas—Continued.

County

Mean storm interevent time (days) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours

Anderson 5.34 5.68 6.12 6.67 7.21 8.52 9.76

Andrews 9.66 10.2 10.9 11.7 12.4 14.2 15.8

Angelina 5.04 5.31 5.77 6.29 6.88 8.24 9.56

Aransas 5.56 5.88 6.42 7.11 7.80 9.39 10.8

Archer 7.02 7.30 8.05 8.74 9.38 11.0 12.4

Armstrong 7.46 7.91 8.54 9.28 10.0 12.0 13.6

Atascosa 7.28 7.67 8.35 9.13 9.94 11.7 13.1

Austin 5.70 6.10 6.52 7.16 7.85 9.35 10.7

Bailey 8.52 8.93 9.61 10.4 11.3 13.3 15.0

Bandera 6.85 7.36 8.02 8.87 9.57 11.3 12.7

Bastrop 5.75 6.16 6.73 7.42 8.04 9.67 11.0

Baylor 8.14 8.52 9.28 10.1 10.8 12.7 14.3

Bee 6.58 6.93 7.52 8.25 9.09 10.8 12.3

Bell 6.42 6.77 7.24 7.85 8.43 9.94 11.3

Bexar 6.11 6.40 7.07 7.82 8.53 10.1 11.4

Blanco 6.53 6.85 7.50 8.20 8.79 10.3 11.5

Borden 8.71 9.18 9.91 10.8 11.6 13.5 15.0

Bosque 6.52 7.06 7.50 8.18 8.81 10.4 11.8

Bowie 5.09 5.39 5.84 6.40 6.89 8.24 9.44

Brazoria 5.05 5.33 5.77 6.34 7.02 8.50 9.89

Brazos 5.58 5.91 6.41 7.06 7.74 9.22 10.5

Brewster 11.3 12.2 12.4 13.3 14.5 16.9 18.9

Briscoe 8.28 8.71 9.45 10.3 11.0 13.0 14.7

Brooks 10.3 11.2 11.7 12.9 14.2 16.9 18.5

Brown 8.66 8.82 9.83 10.7 11.4 13.4 14.9

Burleson 5.84 6.14 6.63 7.30 7.91 9.39 10.7

Burnet 6.67 7.00 7.64 8.28 8.85 10.4 11.7

Caldwell 6.71 7.25 7.85 8.66 9.31 11.0 12.6

Calhoun 5.05 5.35 5.83 6.43 7.10 8.60 9.88

Callahan 6.65 7.11 7.68 8.43 9.14 10.7 12.0

Cameron 5.81 6.24 6.84 7.63 8.57 10.3 11.8

Camp 5.54 5.88 6.38 6.95 7.47 8.87 10.1

Carson 7.52 7.98 8.56 9.30 10.0 12.0 13.6

Cass 5.14 5.42 5.87 6.39 6.92 8.26 9.48

Castro 9.13 9.67 10.4 11.2 12.1 14.2 16.0

Chambers 4.28 4.55 5.01 5.59 6.27 7.69 9.16

Cherokee 5.27 5.59 6.05 6.59 7.14 8.45 9.73

Childress 8.85 9.43 10.1 11.0 11.7 13.7 15.4

Clay 6.82 7.12 7.84 8.56 9.19 10.8 12.2

Cochran 9.20 9.65 10.4 11.2 12.1 14.2 16.0

Coke 9.39 9.45 10.6 11.6 12.4 14.4 15.8

Coleman 8.55 8.99 9.71 10.5 11.3 13.3 14.8

Collin 6.08 6.45 6.94 7.53 8.05 9.46 10.8

Collingsworth 8.80 9.37 10.0 10.9 11.6 13.8 15.5

Colorado 5.56 5.93 6.39 7.01 7.67 9.10 10.4

Comal 6.55 6.87 7.51 8.25 8.85 10.3 11.6

Comanche 7.68 7.82 8.59 9.21 9.83 11.3 12.6

Concho 8.40 8.83 9.58 10.3 11.0 12.9 14.4

Cooke 6.56 6.91 7.51 8.21 8.80 10.4 11.8

Table 18. Mean storm interevent time by county for Texas.
Table 18 77

Coryell 6.83 7.20 7.79 8.45 9.05 10.6 11.9

Cottle 8.77 9.38 9.99 10.9 11.6 13.6 15.2

Crane 11.9 12.4 13.2 14.1 14.9 16.9 18.3

Crockett 10.7 11.3 12.1 13.1 14.0 16.1 17.9

Crosby 8.58 9.02 9.74 10.6 11.4 13.4 15.0

Culberson 11.7 12.2 13.0 14.0 15.1 17.5 19.6

Dallam 8.43 8.81 9.37 10.1 11.0 13.0 14.7

Dallas 5.72 6.09 6.64 7.29 7.86 9.31 10.7

Dawson 8.43 8.88 9.56 10.4 11.1 12.9 14.4

Deaf Smith 6.12 6.44 7.05 7.75 8.50 10.1 11.5

Delta 10.7 11.0 12.2 13.1 14.3 16.9 19.1

Denton 5.48 5.88 6.32 6.90 7.40 8.75 10.0

DeWitt 6.47 6.82 7.40 8.06 8.63 10.1 11.5

Dickens 8.84 9.28 10.0 10.9 11.7 13.7 15.3

Dimmit 10.1 10.6 11.4 12.4 13.4 15.7 17.5

Donley 7.82 8.33 8.94 9.73 10.4 12.4 14.1

Duval 8.54 9.10 9.77 10.6 11.7 13.7 15.4

Eastland 7.29 7.65 8.27 8.98 9.61 11.2 12.5

Ector 10.6 11.1 11.9 12.8 13.6 15.5 16.9

Edwards 9.01 9.51 10.4 11.4 12.3 14.2 15.9

El Paso 13.9 14.9 15.2 16.3 19.4 21.8 23.5

Ellis 6.37 6.73 7.29 7.93 8.55 10.0 11.4

Erath 6.98 7.36 7.94 8.63 9.27 10.9 12.2

Falls 5.82 6.11 6.58 7.18 7.76 9.22 10.6

Fannin 6.15 6.48 7.09 7.75 8.29 9.80 11.2

Fayette 5.92 6.36 6.84 7.53 8.16 9.75 11.1

Fisher 8.86 9.51 10.2 11.1 12.0 13.9 15.5

Floyd 8.58 9.01 9.75 10.6 11.4 13.4 15.0

Foard 9.02 9.60 10.2 11.1 11.9 14.1 15.8

Fort Bend 5.55 5.84 6.27 6.83 7.43 8.90 10.1

Franklin 5.45 5.79 6.26 6.84 7.32 8.70 9.94

Freestone 5.56 5.96 6.37 6.95 7.51 8.88 10.1

Frio 8.51 9.16 9.76 10.7 11.5 13.5 15.1

Gaines 9.30 9.90 10.4 11.3 11.9 13.9 15.4

Galveston 4.54 4.84 5.34 5.96 6.63 8.09 9.64

Garza 8.54 9.02 9.73 10.6 11.4 13.3 15.0

Gillespie 6.96 7.40 8.05 8.83 9.46 11.1 12.5

Glasscock 10.3 10.9 11.6 12.5 13.3 15.3 16.7

Goliad 6.08 6.41 6.97 7.66 8.44 10.1 11.5

Gonzales 6.74 7.12 7.78 8.56 9.31 11.0 12.5

Gray 7.26 7.76 8.24 8.96 9.61 11.5 13.1

Grayson 6.04 6.37 6.91 7.52 8.06 9.50 10.8

Gregg 5.32 5.63 6.11 6.70 7.19 8.50 9.73

Grimes 5.85 6.18 6.73 7.39 8.17 9.73 11.1

Guadalupe 6.73 6.87 7.75 8.54 9.26 10.9 12.3

Hale 8.71 9.16 9.87 10.7 11.6 13.6 15.4

Hall 8.56 9.07 9.80 10.7 11.4 13.4 15.1

Hamilton 7.29 7.57 8.32 9.01 9.65 11.3 12.7

Hansford 8.27 8.65 9.30 10.0 10.8 12.6 14.3

Table 18. Mean storm interevent time by county for Texas—Continued.

County

Mean storm interevent time (days) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
78 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Hardeman 8.76 9.34 10.0 10.9 11.7 13.7 15.4

Hardin 4.25 4.54 4.91 5.44 6.09 7.46 8.74

Harris 4.84 5.14 5.57 6.14 6.78 8.18 9.53

Harrison 5.17 5.38 5.91 6.44 6.95 8.18 9.38

Hartley 8.74 9.15 9.74 10.6 11.4 13.3 15.0

Haskell 8.87 9.48 10.3 11.2 12.1 14.4 16.1

Hays 6.13 6.53 7.09 7.82 8.38 9.80 11.1

Hemphill 7.69 8.11 8.73 9.48 10.1 12.0 13.6

Henderson 5.84 6.20 6.72 7.33 7.85 9.34 10.6

Hidalgo 11.1 11.8 12.7 14.1 15.4 18.4 20.1

Hill 6.26 6.61 7.15 7.78 8.37 9.88 11.2

Hockley 9.00 9.44 10.2 11.1 12.0 14.1 15.9

Hood 6.50 6.94 7.40 8.04 8.65 10.2 11.5

Hopkins 5.36 5.70 6.18 6.75 7.21 8.55 9.81

Houston 5.24 5.57 6.00 6.56 7.12 8.42 9.67

Howard 9.56 10.1 10.8 11.7 12.6 14.5 16.0

Hudspeth 12.3 13.3 13.5 14.7 16.3 18.9 21.1

Hunt 5.68 5.96 6.54 7.13 7.63 9.00 10.3

Hutchinson 8.28 8.68 9.35 10.1 10.9 12.8 14.6

Irion 9.57 10.0 10.8 11.8 12.6 14.5 16.0

Jack 6.84 7.19 7.86 8.58 9.21 10.8 12.2

Jackson 5.24 5.56 6.02 6.63 7.29 8.75 10.0

Jasper 4.55 4.81 5.19 5.69 6.30 7.62 8.84

Jeff Davis 10.5 10.8 11.7 12.7 14.0 16.7 18.6

Jefferson 4.24 4.51 4.94 5.48 6.21 7.64 9.03

Jim Hogg 10.2 11.5 11.7 12.7 13.9 16.4 18.4

Jim Wells 7.21 7.66 8.27 9.09 10.0 11.9 13.4

Johnson 6.39 6.77 7.29 7.93 8.55 10.1 11.4

Jones 7.81 8.47 9.08 9.92 10.8 12.7 14.1

Karnes 6.77 6.92 7.73 8.47 9.30 11.0 12.5

Kaufman 6.19 6.49 7.14 7.77 8.34 9.81 11.1

Kendall 6.73 7.18 7.81 8.56 9.21 10.7 12.0

Kenedy 7.31 7.75 8.45 9.37 10.3 12.4 13.9

Kent 9.07 9.63 10.4 11.3 12.1 14.2 15.9

Kerr 7.04 7.51 8.21 9.03 9.71 11.4 12.8

Kimble 7.91 8.36 9.10 9.95 10.6 12.5 14.0

King 9.45 9.95 10.7 11.7 12.6 14.8 16.6

Kinney 8.75 9.19 9.99 10.9 11.9 13.9 15.6

Kleberg 6.33 6.73 7.31 8.10 8.87 10.6 12.1

Knox 9.24 9.68 10.5 11.5 12.3 14.6 16.4

La Salle 9.32 9.89 10.7 11.6 12.5 14.7 16.5

Lamar 5.63 5.97 6.47 7.08 7.58 8.98 10.3

Lamb 8.80 9.24 9.94 10.8 11.7 13.8 15.5

Lampasas 6.84 7.31 7.83 8.47 9.04 10.6 11.9

Lavaca 5.82 6.21 6.73 7.40 8.09 9.62 11.0

Lee 5.92 6.26 6.77 7.45 8.06 9.60 10.9

Leon 5.39 5.76 6.16 6.75 7.31 8.63 9.85

Liberty 4.34 4.72 5.00 5.54 6.17 7.55 8.87

Limestone 5.59 5.91 6.38 6.96 7.54 8.94 10.2

Table 18. Mean storm interevent time by county for Texas—Continued.

County

Mean storm interevent time (days) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
Table 18 79

Lipscomb 7.81 8.23 8.83 9.56 10.2 12.1 13.7

Live Oak 6.96 7.32 7.96 8.72 9.56 11.3 12.8

Llano 7.21 7.59 8.22 8.97 9.57 11.3 12.7

Loving 11.2 11.8 12.5 13.5 14.4 16.3 18.0

Lubbock 8.74 9.18 9.89 10.8 11.6 13.7 15.5

Lynn 8.30 8.73 9.42 10.2 11.0 13.0 14.6

Madison 5.52 5.89 6.31 6.92 7.50 8.86 10.0

Marion 5.19 5.46 5.91 6.39 6.94 8.22 9.43

Martin 8.91 9.37 10.1 10.9 11.7 13.5 15.0

Mason 7.38 7.97 8.48 9.29 9.95 11.7 13.2

Matagorda 5.38 5.69 6.14 6.75 7.41 8.96 10.3

Maverick 9.30 9.72 10.5 11.5 12.5 14.6 16.2

McCulloch 8.44 8.93 9.65 10.5 11.2 13.1 14.6

McLennan 5.68 6.02 6.49 7.11 7.68 9.10 10.4

McMullen 7.99 8.44 9.15 9.98 10.9 12.7 14.4

Medina 7.12 7.69 8.29 9.15 9.90 11.7 13.2

Menard 8.48 8.99 9.69 10.5 11.2 13.1 14.7

Midland 9.73 10.2 11.0 11.8 12.6 14.5 15.9

Milam 6.07 6.40 6.89 7.53 8.12 9.66 11.0

Mills 8.18 8.52 9.29 10.1 10.7 12.5 13.9

Mitchell 9.78 10.3 11.1 12.1 12.9 14.9 16.4

Montague 6.99 7.43 7.99 8.74 9.39 11.1 12.6

Montgomery 5.21 5.55 5.96 6.54 7.23 8.70 10.0

Moore 8.58 9.00 9.66 10.5 11.3 13.1 14.8

Morris 5.34 5.65 6.12 6.67 7.19 8.55 9.78

Motley 8.52 8.99 9.71 10.5 11.3 13.2 14.8

Nacogdoches 5.37 5.68 6.16 6.70 7.28 8.60 9.94

Navarro 6.14 6.51 7.04 7.65 8.21 9.73 11.0

Newton 4.55 4.86 5.19 5.68 6.29 7.60 8.80

Nolan 8.61 9.13 9.85 10.7 11.5 13.4 14.8

Nueces 6.05 6.40 6.98 7.74 8.49 10.2 11.6

Ochiltree 7.92 8.32 8.91 9.63 10.3 12.1 13.8

Oldham 9.61 9.82 10.8 11.6 12.6 14.8 16.7

Orange 4.22 4.47 4.89 5.41 6.14 7.56 8.90

Palo Pinto 6.87 7.15 7.80 8.47 9.12 10.7 12.1

Panola 5.16 5.45 5.95 6.49 6.98 8.17 9.41

Parker 6.41 6.77 7.31 7.96 8.56 10.1 11.4

Parmer 9.25 9.76 10.5 11.3 12.3 14.5 16.4

Pecos 13.6 14.2 15.0 16.0 17.0 19.5 21.3

Polk 4.96 5.21 5.66 6.20 6.82 8.21 9.50

Potter 7.67 8.13 8.74 9.49 10.3 12.1 13.8

Presidio 12.3 12.4 13.4 14.3 15.6 18.1 21.8

Rains 5.60 5.90 6.45 7.04 7.55 8.97 10.3

Randall 7.80 8.21 8.96 9.68 10.5 12.4 14.1

Reagan 10.4 10.9 11.6 12.4 13.3 15.2 16.6

Real 7.61 7.92 8.86 9.77 10.5 12.4 13.9

Red River 5.43 5.75 6.23 6.81 7.27 8.63 9.85

Reeves 13.5 13.8 15.0 16.1 17.3 19.9 21.7

Refugio 5.63 5.94 6.48 7.15 7.88 9.47 10.8

Table 18. Mean storm interevent time by county for Texas—Continued.

County

Mean storm interevent time (days) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
80 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Roberts 7.68 8.07 8.68 9.41 10.1 11.9 13.6

Robertson 5.62 5.95 6.43 7.06 7.62 9.03 10.2

Rockwall 6.05 6.32 6.97 7.58 8.16 9.60 10.9

Runnels 8.91 8.90 10.1 10.9 11.6 13.6 15.1

Rusk 5.40 5.73 6.21 6.79 7.30 8.60 9.87

Sabine 4.75 5.24 5.38 5.86 6.42 7.70 8.92

San Augustine 5.08 5.40 5.80 6.31 6.88 8.20 9.51

San Jacinto 5.25 5.59 5.97 6.55 7.22 8.68 10.0

San Patricio 5.97 6.32 6.87 7.61 8.36 10.0 11.4

San Saba 8.01 8.65 9.16 10.0 10.7 12.5 14.0

Schleicher 9.48 10.1 10.8 11.9 12.8 14.8 16.8

Scurry 9.22 9.76 10.5 11.5 12.3 14.3 15.9

Shackelford 6.96 7.72 8.02 8.75 9.43 11.1 12.4

Shelby 5.19 5.57 5.95 6.47 7.01 8.28 9.56

Sherman 8.51 8.89 9.55 10.3 11.1 13.0 14.6

Smith 5.46 5.78 6.29 6.90 7.44 8.96 10.3

Somervell 6.70 7.17 7.68 8.36 9.00 10.6 12.0

Starr 10.9 12.7 12.5 13.6 14.8 17.6 19.5

Stephens 7.19 7.57 8.17 8.86 9.48 11.1 12.4

Sterling 10.9 11.4 12.2 13.1 14.0 16.0 17.5

Stonewall 9.23 10.0 10.6 11.6 12.5 14.7 16.4

Sutton 9.61 10.3 10.9 12.0 12.9 15.0 16.9

Swisher 8.31 8.76 9.47 10.3 11.0 13.0 14.7

Tarrant 6.03 6.40 6.93 7.58 8.18 9.69 11.0

Taylor 7.11 7.57 8.18 8.95 9.70 11.4 12.7

Terrell 11.5 12.0 12.8 13.9 14.9 17.1 18.7

Terry 8.93 9.40 10.1 10.9 11.7 13.7 15.4

Throckmorton 7.69 8.16 8.81 9.59 10.3 12.1 13.6

Titus 5.44 5.76 6.25 6.82 7.31 8.69 9.92

Tom Green 8.54 8.48 9.72 10.7 11.4 13.4 14.7

Travis 5.20 5.57 6.12 6.75 7.34 8.81 10.1

Trinity 5.23 5.52 5.98 6.54 7.15 8.51 9.81

Tyler 4.53 4.77 5.17 5.67 6.26 7.57 8.79

Upshur 5.43 5.75 6.23 6.79 7.31 8.68 9.93

Upton 11.0 11.5 12.2 13.1 13.9 15.8 17.2

Uvalde 8.11 8.76 9.36 10.3 11.1 13.1 14.7

Val Verde 10.6 11.3 12.1 13.3 14.3 16.4 18.1

Van Zandt 5.92 6.23 6.82 7.44 7.98 9.50 10.8

Victoria 5.23 5.54 6.04 6.66 7.34 8.81 10.1

Walker 5.58 5.91 6.37 6.98 7.66 9.10 10.4

Waller 5.87 6.24 6.75 7.42 8.14 9.71 11.1

Ward 12.2 12.8 13.6 14.6 15.5 17.6 19.2

Washington 5.75 6.20 6.54 7.19 7.87 9.37 10.7

Webb 9.67 10.3 11.0 11.9 13.0 15.2 17.6

Wharton 5.49 5.81 6.27 6.88 7.52 8.97 10.3

Wheeler 7.59 8.01 8.64 9.41 10.1 12.0 13.6

Wichita 7.72 8.10 8.78 9.53 10.2 11.9 13.3

Wilbarger 8.77 9.29 9.98 10.9 11.7 13.6 15.2

Willacy 7.23 7.67 8.42 9.33 10.3 12.5 14.1

Table 18. Mean storm interevent time by county for Texas—Continued.

County

Mean storm interevent time (days) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
Table 18 81

Williamson 6.15 6.54 7.09 7.73 8.33 9.92 11.2

Wilson 6.70 6.61 7.69 8.45 9.24 10.9 12.3

Winkler 11.3 11.9 12.7 13.6 14.4 16.4 18.0

Wise 7.12 7.64 8.13 8.87 9.52 11.2 12.7

Wood 5.43 5.81 6.23 6.82 7.35 8.82 10.1

Yoakum 9.61 10.1 10.8 11.7 12.4 14.5 16.1

Young 7.09 7.34 8.13 8.84 9.47 11.1 12.5

Zapata 10.3 11.2 11.7 12.5 13.6 16.0 18.9

Zavala 9.68 10.2 11.0 12.0 12.9 15.1 16.7

Table 18. Mean storm interevent time by county for Texas—Continued.

County

Mean storm interevent time (days) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
82 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Table 19 Table 19. Mean storm depth by county for Texas—Continued.

County

Mean storm depth (inches) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours

Anderson 0.575 0.611 0.664 0.731 0.799 0.982 1.19

Andrews .334 .351 .378 .409 .440 .516 .584

Angelina .612 .648 .707 .779 .864 1.08 1.33

Aransas .482 .513 .561 .627 .698 .877 1.05

Archer .473 .502 .548 .599 .648 .781 .919

Armstrong .372 .393 .428 .468 .508 .623 .729

Atascosa .494 .524 .571 .629 .691 .834 .967

Austin .566 .599 .654 .724 .803 .988 1.18

Bailey .359 .377 .407 .444 .485 .582 .673

Bandera .509 .542 .602 .671 .730 .884 1.03

Bastrop .513 .550 .605 .674 .738 .921 1.10

Baylor .491 .518 .564 .616 .664 .801 .926

Bee .494 .523 .568 .628 .699 .860 1.01

Bell .533 .563 .606 .661 .715 .870 1.02

Bexar .479 .510 .560 .626 .689 .846 .987

Blanco .532 .567 .616 .678 .734 .882 1.02

Borden .394 .416 .450 .492 .532 .633 .722

Bosque .524 .557 .607 .667 .725 .880 1.04

Bowie .628 .666 .726 .804 .876 1.10 1.32

Brazoria .537 .569 .619 .688 .773 .979 1.21

Brazos .546 .579 .632 .703 .779 .963 1.15

Brewster .337 .351 .372 .404 .447 .536 .613

Briscoe .389 .411 .447 .487 .527 .637 .739

Brooks .454 .480 .524 .579 .639 .778 .883

Brown .516 .543 .589 .645 .695 .831 .952

Burleson .552 .583 .632 .701 .768 .945 1.12

Burnet .530 .563 .612 .668 .720 .872 1.01

Caldwell .524 .564 .620 .689 .754 .927 1.10

Calhoun .509 .541 .593 .659 .739 .938 1.14

Callahan .446 .476 .519 .574 .626 .753 .875

Cameron .381 .410 .453 .511 .583 .730 .866

Camp .632 .672 .734 .807 .877 1.08 1.30

Carson .376 .397 .431 .471 .512 .628 .738

Cass .622 .659 .717 .789 .864 1.08 1.31

Castro .369 .389 .421 .458 .498 .596 .689

Chambers .516 .552 .613 .694 .790 1.03 1.31

Cherokee .582 .618 .673 .740 .812 1.00 1.22

Childress .436 .465 .502 .550 .588 .699 .809

Clay .501 .532 .580 .639 .691 .835 .982

Cochran .369 .388 .418 .457 .497 .595 .683

Coke .450 .475 .513 .562 .601 .712 .801

Coleman .522 .551 .596 .649 .701 .844 .966

Collin .584 .618 .672 .734 .792 .961 1.14

Collingsworth .441 .468 .505 .552 .592 .716 .835

Colorado .548 .583 .635 .704 .779 .957 1.14

Comal .548 .583 .633 .701 .758 .911 1.05

Comanche .524 .549 .589 .636 .683 .807 .922

Concho .460 .485 .527 .570 .614 .732 .837

Cooke .547 .579 .630 .694 .750 .912 1.08

Table 19. Mean storm depth by county for Texas.
Table 19 83

Coryell 0.544 0.577 0.625 0.683 0.737 0.883 1.03

Cottle .445 .470 .510 .558 .602 .718 .826

Crane .363 .380 .405 .435 .463 .532 .586

Crockett .414 .435 .468 .507 .547 .638 .718

Crosby .410 .433 .469 .512 .555 .665 .766

Culberson .281 .293 .313 .339 .369 .436 .497

Dallam .333 .349 .373 .406 .446 .538 .627

Dallas .533 .569 .625 .691 .754 .924 1.11

Dawson .363 .383 .415 .452 .489 .584 .669

Deaf Smith .505 .538 .587 .651 .724 .891 1.06

Delta .371 .392 .423 .458 .500 .599 .692

Denton .631 .673 .735 .811 .877 1.08 1.30

DeWitt .548 .579 .631 .691 .746 .904 1.07

Dickens .436 .459 .497 .543 .587 .700 .802

Dimmit .488 .517 .557 .608 .662 .788 .895

Donley .403 .427 .463 .507 .546 .668 .781

Duval .480 .508 .553 .607 .672 .805 .927

Eastland .519 .548 .592 .647 .696 .834 .957

Ector .340 .356 .383 .413 .442 .512 .571

Edwards .473 .501 .548 .606 .657 .773 .891

El Paso .213 .223 .237 .253 .275 .326 .365

Ellis .575 .611 .663 .727 .791 .959 1.13

Erath .523 .553 .598 .654 .709 .855 .992

Falls .519 .548 .591 .651 .710 .874 1.05

Fannin .620 .662 .722 .794 .860 1.05 1.26

Fayette .536 .570 .624 .692 .759 .939 1.11

Fisher .446 .475 .516 .566 .613 .729 .828

Floyd .404 .426 .462 .503 .545 .654 .754

Foard .497 .522 .567 .619 .669 .807 .932

Fort Bend .596 .628 .677 .744 .819 1.01 1.21

Franklin .633 .673 .735 .810 .875 1.08 1.30

Freestone .569 .606 .658 .724 .791 .970 1.16

Frio .497 .528 .576 .633 .691 .827 .953

Gaines .353 .371 .399 .433 .468 .555 .631

Galveston .499 .535 .595 .673 .760 .977 1.24

Garza .405 .428 .465 .508 .550 .658 .756

Gillespie .503 .535 .586 .646 .698 .842 .975

Glasscock .402 .423 .453 .489 .526 .612 .683

Goliad .502 .533 .580 .642 .716 .887 1.06

Gonzales .512 .546 .597 .660 .730 .894 1.05

Gray .405 .428 .463 .506 .547 .671 .789

Grayson .575 .610 .662 .726 .785 .957 1.14

Gregg .620 .659 .719 .797 .863 1.06 1.28

Grimes .567 .600 .657 .727 .813 1.00 1.20

Guadalupe .512 .545 .595 .661 .725 .883 1.03

Hale .386 .406 .439 .479 .520 .625 .722

Hall .412 .437 .475 .519 .558 .669 .774

Hamilton .521 .552 .598 .652 .703 .843 .983

Hansford .369 .386 .417 .452 .490 .585 .684

Table 19. Mean storm depth by county for Texas—Continued.

County

Mean storm depth (inches) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
84 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Hardeman 0.469 0.497 0.540 0.592 0.638 0.763 0.883

Hardin .594 .633 .696 .782 .887 1.15 1.45

Harris .554 .590 .646 .720 .810 1.03 1.27

Harrison .618 .656 .712 .783 .855 1.05 1.27

Hartley .354 .372 .399 .436 .476 .569 .662

Haskell .476 .507 .553 .609 .659 .801 .918

Hays .527 .564 .615 .685 .743 .897 1.05

Hemphill .419 .443 .479 .523 .563 .684 .800

Henderson .595 .633 .690 .759 .821 1.01 1.20

Hidalgo .433 .459 .502 .557 .618 .751 .841

Hill .552 .586 .635 .696 .756 .923 1.08

Hockley .374 .394 .426 .466 .507 .610 .705

Hood .527 .558 .604 .660 .717 .872 1.02

Hopkins .624 .665 .726 .800 .863 1.07 1.29

Houston .578 .614 .668 .736 .811 .998 1.21

Howard .397 .419 .452 .490 .530 .625 .703

Hudspeth .250 .260 .278 .302 .329 .392 .448

Hunt .608 .647 .707 .777 .838 1.03 1.23

Hutchinson .384 .404 .437 .475 .517 .621 .726

Irion .411 .434 .468 .511 .549 .646 .728

Jack .509 .540 .590 .649 .702 .846 .993

Jackson .540 .574 .627 .696 .776 .972 1.17

Jasper .625 .662 .721 .799 .899 1.14 1.41

Jeff Davis .310 .324 .346 .379 .426 .524 .601

Jefferson .576 .615 .679 .767 .875 1.14 1.45

Jim Hogg .454 .483 .524 .573 .631 .756 .856

Jim Wells .467 .495 .541 .601 .668 .818 .957

Johnson .538 .571 .619 .678 .738 .901 1.05

Jones .450 .481 .527 .580 .633 .764 .876

Karnes .502 .532 .577 .636 .706 .861 1.01

Kaufman .590 .629 .686 .752 .816 .990 1.17

Kendall .533 .569 .623 .687 .745 .892 1.03

Kenedy .431 .459 .504 .564 .627 .781 .920

Kent .438 .464 .503 .550 .595 .709 .811

Kerr .495 .527 .582 .645 .699 .843 .976

Kimble .457 .483 .529 .581 .626 .754 .863

King .461 .485 .526 .576 .622 .745 .859

Kinney .445 .468 .511 .562 .614 .735 .845

Kleberg .453 .482 .529 .592 .656 .812 .963

Knox .489 .515 .558 .612 .661 .801 .927

La Salle .478 .508 .550 .600 .655 .782 .899

Lamar .639 .679 .740 .818 .884 1.09 1.31

Lamb .373 .392 .423 .462 .504 .605 .700

Lampasas .517 .549 .596 .649 .697 .840 .976

Lavaca .524 .559 .611 .678 .751 .926 1.10

Lee .540 .571 .623 .691 .755 .931 1.10

Leon .562 .598 .648 .716 .785 .962 1.15

Liberty .552 .588 .644 .723 .820 1.06 1.34

Limestone .542 .575 .623 .686 .751 .924 1.11

Table 19. Mean storm depth by county for Texas—Continued.

County

Mean storm depth (inches) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
Table 19 85

Lipscomb 0.402 0.425 0.457 0.497 0.534 0.648 0.760

Live Oak .491 .520 .565 .624 .692 .844 .990

Llano .497 .525 .570 .626 .673 .813 .943

Loving .320 .336 .360 .387 .416 .479 .537

Lubbock .385 .406 .439 .480 .522 .628 .726

Lynn .376 .397 .430 .471 .510 .613 .707

Madison .573 .609 .661 .731 .802 .982 1.16

Marion .622 .659 .714 .781 .858 1.06 1.29

Martin .355 .374 .404 .439 .475 .562 .638

Mason .465 .492 .538 .593 .639 .775 .896

Matagorda .582 .616 .670 .743 .826 1.04 1.26

Maverick .469 .493 .534 .588 .640 .762 .861

McCulloch .483 .509 .556 .608 .654 .779 .894

McLennan .505 .537 .582 .644 .703 .863 1.03

McMullen .491 .520 .565 .621 .682 .820 .952

Medina .507 .540 .598 .666 .729 .882 1.03

Menard .457 .481 .525 .570 .613 .733 .839

Midland .356 .374 .403 .436 .468 .547 .613

Milam .538 .569 .615 .678 .739 .908 1.07

Mills .507 .534 .579 .632 .677 .803 .924

Mitchell .428 .454 .490 .533 .574 .673 .756

Montague .534 .564 .615 .678 .733 .889 1.04

Montgomery .572 .607 .661 .733 .824 1.04 1.27

Moore .380 .399 .431 .469 .510 .605 .701

Morris .632 .671 .731 .804 .876 1.09 1.31

Motley .424 .447 .486 .530 .572 .683 .786

Nacogdoches .617 .655 .715 .784 .862 1.06 1.29

Navarro .594 .632 .686 .752 .814 .997 1.18

Newton .637 .674 .733 .812 .913 1.16 1.43

Nolan .432 .459 .497 .545 .589 .700 .796

Nueces .456 .485 .532 .596 .661 .823 .980

Ochiltree .380 .400 .430 .467 .503 .604 .709

Oldham .363 .382 .410 .447 .488 .584 .678

Orange .602 .642 .707 .796 .908 1.18 1.49

Palo Pinto .524 .553 .598 .654 .711 .860 1.01

Panola .608 .649 .708 .780 .848 1.03 1.26

Parker .528 .559 .607 .666 .722 .878 1.03

Parmer .354 .373 .402 .438 .479 .573 .665

Pecos .380 .396 .420 .452 .484 .561 .628

Polk .605 .642 .697 .772 .863 1.09 1.34

Potter .359 .379 .411 .449 .489 .596 .698

Presidio .302 .314 .337 .366 .409 .496 .566

Rains .603 .642 .701 .772 .836 1.03 1.24

Randall .356 .378 .412 .448 .488 .597 .697

Reagan .409 .430 .459 .494 .530 .615 .684

Real .486 .516 .571 .635 .689 .830 .964

Red River .642 .681 .742 .820 .883 1.09 1.31

Reeves .309 .323 .343 .370 .399 .463 .512

Refugio .488 .519 .567 .632 .705 .883 1.06

Table 19. Mean storm depth by county for Texas—Continued.

County

Mean storm depth (inches) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
86 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Roberts 0.398 0.420 0.453 0.494 0.533 0.648 0.760

Robertson .550 .585 .635 .704 .767 .942 1.11

Rockwall .581 .618 .675 .740 .804 .977 1.16

Runnels .513 .540 .581 .630 .676 .812 .924

Rusk .616 .655 .714 .788 .856 1.05 1.27

Sabine .617 .650 .705 .776 .864 1.09 1.34

San Augustine .622 .657 .715 .785 .868 1.08 1.33

San Jacinto .596 .633 .683 .758 .849 1.07 1.30

San Patricio .466 .495 .541 .605 .673 .838 .998

San Saba .496 .523 .570 .627 .672 .806 .933

Schleicher .427 .451 .489 .535 .580 .688 .790

Scurry .425 .451 .489 .534 .577 .683 .774

Shackelford .453 .483 .526 .578 .628 .758 .879

Shelby .618 .655 .713 .783 .860 1.06 1.29

Sherman .366 .383 .414 .449 .488 .580 .674

Smith .579 .615 .673 .746 .812 1.02 1.23

Somervell .529 .561 .610 .668 .725 .880 1.03

Starr .438 .466 .506 .554 .608 .732 .821

Stephens .507 .536 .580 .633 .683 .820 .949

Sterling .434 .457 .489 .528 .566 .656 .729

Stonewall .461 .491 .535 .587 .635 .760 .868

Sutton .449 .474 .516 .564 .611 .721 .828

Swisher .376 .397 .430 .469 .508 .614 .711

Tarrant .521 .554 .604 .666 .725 .889 1.05

Taylor .424 .452 .492 .542 .592 .713 .829

Terrell .405 .425 .456 .495 .534 .620 .694

Terry .366 .385 .416 .454 .492 .590 .676

Throckmorton .490 .519 .565 .619 .668 .807 .933

Titus .637 .677 .739 .814 .881 1.09 1.30

Tom Green .399 .424 .458 .505 .542 .647 .733

Travis .459 .494 .547 .609 .672 .843 1.01

Trinity .596 .633 .688 .760 .842 1.05 1.27

Tyler .611 .648 .706 .784 .880 1.12 1.39

Upshur .623 .661 .721 .794 .865 1.07 1.29

Upton .384 .403 .430 .461 .494 .570 .631

Uvalde .496 .525 .578 .642 .699 .840 .971

Val Verde .438 .462 .501 .552 .598 .697 .788

Van Zandt .598 .637 .695 .765 .828 1.02 1.22

Victoria .507 .540 .591 .658 .735 .922 1.11

Walker .586 .622 .675 .746 .829 1.03 1.23

Waller .589 .626 .685 .762 .845 1.04 1.24

Ward .332 .348 .371 .399 .426 .490 .543

Washington .553 .583 .635 .703 .779 .961 1.15

Webb .450 .478 .517 .564 .620 .741 .849

Wharton .578 .613 .666 .738 .816 1.01 1.21

Wheeler .432 .457 .495 .542 .583 .711 .832

Wichita .491 .518 .563 .616 .666 .794 .921

Wilbarger .506 .533 .579 .635 .687 .818 .937

Willacy .403 .433 .476 .532 .598 .746 .874

Table 19. Mean storm depth by county for Texas—Continued.

County

Mean storm depth (inches) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
Table 19 87

Williamson 0.521 0.556 0.606 0.666 0.724 0.892 1.05

Wilson .499 .530 .577 .639 .706 .862 1.00

Winkler .331 .347 .372 .401 .429 .496 .553

Wise .539 .570 .621 .682 .738 .894 1.04

Wood .604 .641 .701 .774 .844 1.05 1.27

Yoakum .363 .381 .410 .446 .483 .576 .654

Young .498 .528 .575 .631 .681 .820 .958

Zapata .440 .470 .508 .552 .607 .728 .826

Zavala .498 .525 .567 .624 .678 .806 .912

Table 19. Mean storm depth by county for Texas—Continued.

County

Mean storm depth (inches) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
88 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Table 20 Table 20. Mean storm duration by county for Texas—Continued.

County

Mean storm duration (hours) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours

Anderson 5.78 6.54 7.93 10.2 13.0 24.0 41.2

Andrews 4.20 4.74 5.86 7.53 9.67 17.3 27.3

Angelina 5.71 6.43 7.88 10.2 13.5 25.8 45.3

Aransas 5.04 5.79 7.26 9.86 13.4 25.6 42.9

Archer 5.28 5.99 7.40 9.44 11.9 21.2 35.3

Armstrong 4.54 5.18 6.46 8.40 10.9 21.3 35.2

Atascosa 4.82 5.50 6.83 9.03 11.9 21.6 34.5

Austin 5.28 5.97 7.36 9.71 13.0 24.1 40.6

Bailey 3.85 4.38 5.47 7.31 9.89 18.7 31.1

Bandera 4.92 5.66 7.31 9.82 12.5 22.4 36.0

Bastrop 4.80 5.62 7.15 9.60 12.5 24.2 40.2

Baylor 4.77 5.38 6.67 8.60 10.9 20.2 32.6

Bee 4.32 4.96 6.21 8.43 11.7 22.4 37.1

Bell 5.50 6.17 7.34 9.30 11.8 21.8 36.2

Bexar 5.28 6.06 7.59 10.2 13.4 24.2 38.4

Blanco 5.92 6.73 8.15 10.4 12.9 22.6 35.9

Borden 4.35 4.98 6.16 8.06 10.4 19.0 30.0

Bosque 5.09 5.81 7.18 9.32 11.9 21.9 36.1

Bowie 5.35 6.07 7.45 9.79 12.5 24.2 41.5

Brazoria 5.45 6.17 7.56 10.0 13.8 26.6 46.7

Brazos 5.44 6.16 7.65 10.1 13.5 25.0 41.3

Brewster 3.57 3.98 4.81 6.41 9.32 18.1 29.1

Briscoe 4.36 4.97 6.22 8.07 10.5 19.9 32.8

Brooks 5.11 5.81 7.20 9.52 12.6 22.9 34.2

Brown 4.84 5.44 6.69 8.71 10.9 19.8 31.3

Burleson 5.37 6.03 7.36 9.78 12.7 23.7 39.3

Burnet 5.64 6.40 7.77 9.81 12.1 22.0 35.0

Caldwell 5.05 5.94 7.47 9.93 12.8 23.5 39.2

Calhoun 5.10 5.84 7.33 9.84 13.6 26.6 45.0

Callahan 5.35 6.13 7.56 9.88 12.7 22.2 35.4

Cameron 5.07 5.96 7.57 10.4 14.8 27.3 43.3

Camp 5.46 6.21 7.64 9.84 12.5 23.5 40.0

Carson 4.45 5.07 6.30 8.23 10.8 20.9 35.1

Cass 5.27 5.97 7.31 9.46 12.3 24.0 41.6

Castro 4.04 4.62 5.77 7.51 9.97 18.8 31.1

Chambers 5.69 6.55 8.32 11.4 15.8 30.9 56.2

Cherokee 5.78 6.55 7.98 10.2 13.2 24.4 42.3

Childress 4.60 5.32 6.50 8.47 10.5 19.0 31.2

Clay 5.13 5.83 7.23 9.40 11.8 21.3 35.6

Cochran 3.87 4.41 5.49 7.33 9.79 18.5 30.1

Coke 4.64 5.29 6.45 8.44 10.4 18.6 28.3

Coleman 5.24 5.88 7.14 9.06 11.4 20.7 32.3

Collin 5.42 6.10 7.46 9.49 11.8 21.7 36.8

Collingsworth 4.35 5.02 6.16 8.09 10.1 19.6 32.7

Colorado 5.06 5.79 7.16 9.49 12.7 23.5 39.7

Comal 6.07 6.88 8.27 10.7 13.2 22.8 36.0

Comanche 5.50 6.10 7.22 8.95 11.1 19.5 30.7

Concho 4.68 5.31 6.59 8.34 10.5 19.3 30.5

Cooke 5.08 5.75 7.09 9.24 11.6 21.6 36.1

Table 20. Mean storm duration by county for Texas.
Table 20 89

Coryell 5.50 6.23 7.51 9.52 11.9 21.1 34.5

Cottle 4.48 5.12 6.34 8.29 10.5 19.2 31.0

Crane 3.98 4.48 5.39 6.85 8.63 15.1 22.7

Crockett 4.25 4.80 5.87 7.52 9.69 17.1 26.8

Crosby 4.23 4.82 6.01 7.89 10.3 19.2 31.1

Culberson 3.76 4.17 5.09 6.74 9.12 16.9 27.6

Dallam 4.20 4.72 5.70 7.46 10.4 20.0 33.2

Dallas 5.26 6.06 7.57 9.92 12.6 23.3 40.0

Dawson 4.23 4.82 6.00 7.86 10.2 18.8 30.1

Deaf Smith 4.86 5.60 6.99 9.35 12.8 23.7 39.6

Delta 4.46 5.08 6.25 7.98 10.6 19.4 31.9

Denton 5.45 6.23 7.67 9.92 12.4 23.2 40.0

DeWitt 5.27 5.93 7.29 9.37 11.7 21.6 36.2

Dickens 4.20 4.76 5.95 7.80 10.1 18.7 30.2

Dimmit 4.57 5.23 6.37 8.29 10.9 19.4 30.3

Donley 4.47 5.11 6.35 8.31 10.6 20.7 34.3

Duval 4.72 5.39 6.69 8.78 11.9 21.1 33.3

Eastland 5.31 5.97 7.18 9.19 11.5 20.6 32.3

Ector 4.09 4.61 5.65 7.24 9.22 16.3 25.1

Edwards 4.29 4.93 6.28 8.46 10.9 19.1 31.0

El Paso 4.00 4.50 5.39 6.85 9.17 17.4 26.9

Ellis 5.18 5.92 7.20 9.27 11.9 21.9 36.2

Erath 5.05 5.72 6.94 8.93 11.4 20.8 33.4

Falls 5.56 6.24 7.48 9.71 12.5 23.3 39.8

Fannin 5.29 6.06 7.47 9.65 12.2 22.6 38.3

Fayette 4.92 5.65 7.06 9.41 12.3 23.3 38.8

Fisher 4.64 5.37 6.64 8.66 11.1 19.7 30.5

Floyd 4.22 4.79 5.99 7.80 10.2 19.1 31.2

Foard 4.77 5.35 6.60 8.57 10.9 20.1 32.4

Fort Bend 5.61 6.27 7.49 9.68 12.7 24.2 40.3

Franklin 5.55 6.29 7.73 9.97 12.4 23.5 40.0

Freestone 5.73 6.52 7.87 10.1 13.0 23.7 39.9

Frio 4.78 5.47 6.81 8.94 11.7 20.7 32.8

Gaines 4.07 4.61 5.68 7.40 9.62 17.8 28.3

Galveston 5.60 6.46 8.28 11.3 15.4 29.7 53.7

Garza 4.24 4.85 6.05 7.97 10.3 19.2 30.9

Gillespie 5.24 5.99 7.45 9.73 12.1 21.7 34.4

Glasscock 4.60 5.18 6.22 7.85 9.99 17.3 26.3

Goliad 4.57 5.26 6.58 8.87 12.3 23.5 39.3

Gonzales 4.86 5.62 7.03 9.30 12.5 23.1 37.9

Gray 4.54 5.17 6.36 8.32 10.6 20.9 35.0

Grayson 5.49 6.21 7.56 9.66 12.1 22.3 37.5

Gregg 5.64 6.42 7.84 10.3 12.8 23.7 40.6

Grimes 5.50 6.20 7.71 10.1 13.8 25.3 42.1

Guadalupe 5.29 6.05 7.47 9.89 12.9 23.1 36.7

Hale 4.10 4.67 5.81 7.64 10.0 19.1 31.3

Hall 4.49 5.15 6.39 8.31 10.5 19.6 32.1

Hamilton 5.18 5.88 7.16 9.10 11.4 20.5 33.6

Hansford 4.14 4.65 5.76 7.47 9.81 18.4 31.7

Table 20. Mean storm duration by county for Texas—Continued.

County

Mean storm duration (hours) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
90 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Hardeman 4.65 5.31 6.59 8.59 10.8 19.6 31.9

Hardin 5.74 6.55 8.15 11.0 15.2 30.0 53.6

Harris 5.74 6.53 8.09 10.7 14.7 28.0 49.2

Harrison 5.74 6.51 7.85 10.1 12.9 23.7 41.3

Hartley 4.11 4.63 5.65 7.55 10.2 19.2 32.1

Haskell 4.19 4.89 6.18 8.28 10.6 20.2 31.8

Hays 5.91 6.79 8.28 10.9 13.5 23.6 38.3

Hemphill 4.39 5.00 6.17 8.06 10.2 19.9 33.3

Henderson 5.48 6.25 7.67 9.86 12.4 23.3 38.9

Hidalgo 5.16 5.89 7.32 9.77 13.0 23.3 33.5

Hill 5.24 5.97 7.27 9.36 11.9 22.3 36.6

Hockley 4.06 4.63 5.76 7.67 10.2 19.3 31.5

Hood 4.99 5.67 6.89 8.88 11.4 21.3 34.6

Hopkins 5.63 6.42 7.87 10.1 12.5 23.5 40.6

Houston 6.11 6.90 8.33 10.7 13.8 25.1 42.8

Howard 4.47 5.08 6.21 7.97 10.3 18.3 28.1

Hudspeth 3.66 4.05 4.95 6.69 9.10 17.3 28.2

Hunt 5.48 6.26 7.70 9.87 12.3 22.8 38.9

Hutchinson 4.32 4.86 6.03 7.82 10.3 19.3 32.5

Irion 4.47 5.10 6.22 8.10 10.2 18.2 28.1

Jack 4.86 5.55 6.92 9.03 11.4 20.8 34.6

Jackson 5.12 5.86 7.28 9.71 13.3 25.4 43.0

Jasper 5.87 6.59 8.01 10.4 14.3 27.6 48.4

Jeff Davis 3.65 4.09 5.03 6.87 10.3 20.4 31.9

Jefferson 5.69 6.52 8.21 11.2 15.7 30.8 55.6

Jim Hogg 4.91 5.63 6.92 8.93 11.9 21.1 31.7

Jim Wells 4.83 5.52 6.92 9.34 12.7 23.3 37.5

Johnson 5.03 5.73 7.00 9.03 11.6 21.9 35.6

Jones 4.77 5.56 6.97 9.13 11.9 21.3 33.3

Karnes 4.37 5.01 6.25 8.38 11.6 21.8 36.0

Kaufman 5.29 6.05 7.45 9.55 12.1 22.1 36.6

Kendall 5.68 6.52 8.01 10.4 12.9 22.3 35.0

Kenedy 5.30 6.10 7.63 10.3 13.8 25.6 40.7

Kent 4.22 4.85 6.06 7.99 10.3 18.9 30.1

Kerr 4.86 5.59 7.16 9.52 12.0 21.5 34.3

Kimble 4.47 5.10 6.49 8.57 10.8 20.0 31.5

King 4.28 4.83 6.02 7.97 10.2 19.1 31.0

Kinney 4.57 5.15 6.47 8.59 11.3 20.4 32.2

Kleberg 5.10 5.85 7.33 10.0 13.3 24.7 40.6

Knox 4.56 5.13 6.34 8.36 10.7 20.1 32.5

La Salle 4.58 5.27 6.48 8.42 11.1 19.9 31.7

Lamar 5.37 6.11 7.49 9.77 12.2 23.0 39.5

Lamb 3.96 4.52 5.63 7.48 10.0 19.0 31.3

Lampasas 5.48 6.21 7.56 9.51 11.7 21.2 34.1

Lavaca 4.98 5.74 7.16 9.56 12.8 23.9 40.1

Lee 5.23 5.92 7.31 9.69 12.5 23.4 38.7

Leon 5.84 6.62 7.98 10.3 13.3 24.2 40.7

Liberty 5.74 6.55 8.08 10.9 15.1 29.8 53.3

Limestone 5.51 6.24 7.56 9.81 12.7 23.6 40.0

Table 20. Mean storm duration by county for Texas—Continued.

County

Mean storm duration (hours) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
Table 20 91

Lipscomb 4.33 4.94 6.05 7.87 9.96 19.4 33.0

Live Oak 4.47 5.12 6.38 8.58 11.7 21.9 35.9

Llano 5.49 6.17 7.52 9.67 11.9 21.6 34.4

Loving 3.91 4.43 5.39 6.89 8.91 15.4 24.3

Lubbock 4.23 4.82 5.98 7.89 10.4 19.5 31.9

Lynn 4.19 4.78 5.97 7.90 10.3 19.4 31.4

Madison 5.96 6.73 8.12 10.5 13.5 24.4 40.2

Marion 5.39 6.09 7.39 9.40 12.4 23.7 41.2

Martin 4.29 4.87 6.05 7.83 10.1 18.2 28.6

Mason 4.66 5.31 6.70 8.86 11.1 20.7 33.1

Matagorda 5.14 5.83 7.18 9.54 13.0 25.3 43.0

Maverick 4.51 5.09 6.30 8.39 11.0 19.6 30.0

McCulloch 4.70 5.31 6.66 8.65 10.8 19.5 31.1

McLennan 5.58 6.33 7.69 10.1 12.8 23.6 39.7

McMullen 4.66 5.32 6.60 8.69 11.6 20.9 33.7

Medina 5.04 5.79 7.41 9.92 12.8 22.7 36.6

Menard 4.16 4.73 6.03 7.88 10.0 18.8 30.0

Midland 4.28 4.84 5.94 7.60 9.71 17.2 26.4

Milam 5.34 6.02 7.29 9.50 12.2 23.0 38.1

Mills 5.20 5.86 7.13 9.14 11.2 19.8 31.6

Mitchell 4.75 5.43 6.58 8.45 10.6 18.5 28.1

Montague 4.72 5.35 6.68 8.81 11.2 20.9 34.8

Montgomery 5.59 6.34 7.72 10.2 14.0 27.0 46.6

Moore 4.10 4.61 5.73 7.54 9.94 18.4 30.7

Morris 5.43 6.16 7.55 9.75 12.5 23.7 40.5

Motley 4.30 4.89 6.13 7.97 10.2 18.9 30.7

Nacogdoches 5.77 6.53 7.99 10.2 13.2 24.3 42.6

Navarro 5.30 6.06 7.38 9.46 12.0 22.4 37.0

Newton 5.84 6.56 7.94 10.4 14.2 27.3 47.7

Nolan 4.95 5.68 6.93 8.99 11.3 20.0 31.0

Nueces 5.05 5.80 7.27 9.97 13.3 25.1 41.4

Ochiltree 4.19 4.74 5.80 7.55 9.71 18.6 32.3

Oldham 4.38 4.95 6.01 7.86 10.5 19.5 32.3

Orange 5.74 6.55 8.18 11.1 15.6 30.6 54.9

Palo Pinto 4.68 5.29 6.50 8.42 10.9 20.4 34.1

Panola 6.04 6.90 8.35 10.7 13.4 23.8 41.9

Parker 4.73 5.38 6.64 8.68 11.1 21.0 34.8

Parmer 3.98 4.54 5.65 7.45 10.0 18.8 31.4

Pecos 4.21 4.65 5.49 6.98 8.91 15.7 24.4

Polk 5.82 6.58 7.95 10.4 14.0 26.9 46.7

Potter 4.46 5.09 6.33 8.27 10.8 20.8 34.6

Presidio 3.55 3.96 4.92 6.57 9.78 19.0 30.1

Rains 5.48 6.25 7.69 9.92 12.4 23.5 40.0

Randall 4.68 5.36 6.67 8.54 11.2 21.3 35.2

Reagan 4.40 4.96 5.94 7.47 9.50 16.6 25.2

Real 4.52 5.21 6.74 9.12 11.6 21.1 34.0

Red River 5.63 6.36 7.76 10.1 12.4 23.5 39.9

Reeves 3.96 4.45 5.32 6.84 9.04 15.9 24.0

Refugio 4.87 5.59 7.01 9.50 13.1 25.1 42.1

Table 20. Mean storm duration by county for Texas—Continued.

County

Mean storm duration (hours) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
92 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Roberts 4.40 4.99 6.12 7.98 10.3 19.8 33.5

Robertson 5.67 6.43 7.80 10.2 13.0 24.0 39.3

Rockwall 5.21 5.94 7.36 9.46 12.0 22.1 37.0

Runnels 5.61 6.27 7.47 9.31 11.5 20.7 31.9

Rusk 5.80 6.58 8.01 10.3 13.0 23.6 40.8

Sabine 5.75 6.41 7.75 9.95 13.4 25.7 45.6

San Augustine 5.56 6.25 7.61 9.78 13.0 24.8 44.0

San Jacinto 5.83 6.59 7.86 10.3 14.0 26.7 45.7

San Patricio 4.83 5.56 6.97 9.57 13.0 24.7 40.9

San Saba 5.15 5.80 7.17 9.30 11.4 20.6 32.9

Schleicher 4.30 4.93 6.16 8.12 10.5 19.1 30.7

Scurry 4.49 5.16 6.36 8.29 10.6 18.9 29.4

Shackelford 5.12 5.87 7.24 9.39 12.0 21.4 34.5

Shelby 5.83 6.59 8.00 10.2 13.2 24.2 42.7

Sherman 4.13 4.61 5.73 7.45 9.86 18.3 30.9

Smith 5.24 5.98 7.44 9.79 12.5 24.5 41.7

Somervell 4.89 5.59 6.87 8.89 11.4 21.3 34.5

Starr 5.04 5.78 7.11 9.20 12.1 21.6 31.6

Stephens 5.10 5.77 7.01 8.96 11.3 20.3 32.9

Sterling 4.82 5.42 6.43 8.09 10.1 17.3 26.0

Stonewall 4.21 4.90 6.17 8.18 10.5 19.3 30.5

Sutton 4.20 4.80 6.04 7.98 10.4 18.5 30.1

Swisher 4.22 4.81 6.01 7.82 10.2 19.6 32.2

Tarrant 4.94 5.68 7.03 9.24 11.9 22.4 37.3

Taylor 5.42 6.22 7.61 9.88 12.7 22.3 35.5

Terrell 4.13 4.64 5.65 7.35 9.52 16.7 25.7

Terry 4.01 4.56 5.68 7.54 9.91 18.7 30.2

Throckmorton 4.73 5.40 6.70 8.72 11.0 20.3 32.8

Titus 5.54 6.28 7.71 9.95 12.5 23.6 39.9

Tom Green 4.74 5.45 6.67 8.82 11.0 19.9 30.6

Travis 5.77 6.72 8.47 11.1 14.4 26.8 44.5

Trinity 6.03 6.80 8.23 10.6 14.0 25.8 44.3

Tyler 5.86 6.60 8.06 10.6 14.4 27.8 49.1

Upshur 5.50 6.23 7.67 9.88 12.6 23.7 40.6

Upton 4.23 4.76 5.69 7.16 9.10 15.9 23.9

Uvalde 4.75 5.42 6.92 9.27 11.9 21.2 33.7

Val Verde 4.28 4.88 6.10 8.18 10.6 18.2 28.2

Van Zandt 5.38 6.15 7.59 9.81 12.3 23.3 39.0

Victoria 5.02 5.77 7.23 9.69 13.4 25.6 43.3

Walker 5.88 6.64 8.01 10.4 13.8 25.5 42.9

Waller 5.51 6.25 7.73 10.2 13.6 24.8 41.4

Ward 3.86 4.35 5.27 6.76 8.62 15.1 23.1

Washington 5.32 5.96 7.31 9.66 12.9 24.1 40.7

Webb 4.78 5.51 6.71 8.64 11.6 20.6 32.3

Wharton 5.23 5.94 7.26 9.61 12.8 24.1 40.6

Wheeler 4.40 5.03 6.24 8.22 10.4 20.2 33.9

Wichita 5.53 6.20 7.54 9.60 12.1 21.0 33.8

Wilbarger 5.01 5.61 6.93 8.95 11.4 20.1 31.6

Willacy 5.31 6.18 7.76 10.4 14.3 26.1 40.8

Table 20. Mean storm duration by county for Texas—Continued.

County

Mean storm duration (hours) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
Table 20 93

Williamson 5.23 6.00 7.40 9.57 12.2 23.2 37.8

Wilson 4.73 5.42 6.75 9.05 12.1 22.5 35.7

Winkler 3.88 4.38 5.37 6.94 8.85 15.6 24.4

Wise 4.64 5.28 6.58 8.66 11.1 20.7 34.0

Wood 5.34 6.07 7.51 9.78 12.5 24.2 41.3

Yoakum 3.80 4.32 5.36 7.11 9.41 17.8 28.3

Young 4.98 5.67 7.02 9.06 11.4 20.6 33.9

Zapata 4.85 5.63 6.83 8.68 11.6 20.7 31.5

Zavala 4.62 5.24 6.43 8.51 11.0 19.5 30.0

Table 20. Mean storm duration by county for Texas—Continued.

County

Mean storm duration (hours) for each minimum interevent time

6 hours 8 hours 12 hours 18 hours 24 hours 48 hours 72 hours
94 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Table 21

Table 22

Table 23

Table 21. Example simulations of storm interevent time from 

example 2 using 24-hour minimum interevent time for station 0211 

Amarillo Weather Service Office Airport, Texas. 

[Nonexceedance probability is random number between 0 and 1. Interevent 

time is computed as 1-(7.60-1)×ln(1-F), where F is nonexceedance probability, 

7.60 days is mean interevent time, and 1 is day equivalent of 24-hour minimum 

interevent time. --, dimensionless] 

Table 22. Distribution of storm depth for examples 3 and 4 based 

on site-specific statistics for station 4311 Houston Alief, Texas. 

[Empirical estimate of storm depth from appendix 4–4.5, station 4311. 

Continuous distribution estimate of storm depth from fitted four-parameter 

kappa distribution to L-moments from appendix 4–2.5, station 4311. 

-- dimensionless] 

Nonexceedance

probability

(random number)

(--)

Simulated interevent

time—Interval between

successive storms

(days)

0.86910 14.42

.15608 2.12

.56156 6.44

.31575 3.50

.72232 9.46

Total 35.94

Mean 7.19

Nonexceedance

probability

(--)

Empirical estimate

of storm depth

(inches)

Continuous distribution

estimate of storm depth

(inches)

0.01 0.02 0.03

.02 .02 .03

.10 .06 .05

.25 .15 .15

.50 .44 .46

.75 1.18 1.15

.90 2.20 2.24

.98 4.55 4.55

.99 5.71 5.70

Table 23. Regional values for selected storm depth percentiles in Randall County, Texas.

[Linear interpolation used to estimate storm depths for 36-hour minimum interevent time. --, dimensionless] 

Storm depth

percentile

24-hour minimum interevent time Storm depth for

storms defined by

36-hour minimum

interevent time

(inches)

48-hour minimum interevent time

Storm depth

frequency

factor

(--)

Storm depth

(inches)

Storm depth

frequency

factor

(--)

Storm depth

(inches)

50 0.503 0.246 0.278 0.521 0.311

75 1.26 .614 .688 1.28 .761

90 2.49 1.22 1.35 2.48 1.48

98 5.19 2.53 2.79 5.09 3.04

99 6.57 3.20 3.52 6.41 3.83
Statistical Characteristics 

of Storm Interevent Time, 

Depth, and Duration for 

Eastern New Mexico, 

Oklahoma, and Texas

Appendix 1

Appendix 1—

L-Moments and Sample L-Moments
Blank Page
Appendix 1 97

L-moments

This discussion is derived mostly from Hosking (1990), Hosking and Wallis (1997), and references therein. Other references 

are provided as needed for specifics of L-moment theory development.

The theoretical L-moments of a random variable with a quantile function for nonexceedance probability are 

defined from the expectations of order statistics. The order statistics for of a sample of size are formed by the ascending order 

. The theoretical L-moments are defined as

,

where is the order of the L-moment, and is the expectation of the order statistic of a sample of size . The 

expectation of an order statistic is

.

The equation for the binomial coefficients is

.

The first four theoretical L-moments are

,

,

, and

.

The L-moment ratios are the dimensionless quantities

,

,

, and

.

X XF( ) F

X n

X1:n X2:n ... Xn:n ≤ ≤≤

λr

1

r

-- 1 ( ) – k r – 1

k ⎝ ⎠ ⎛ ⎞ E Xr k – :r [ ]

k = 0

r – 1

≡ ∑

r ≥ 1 E Xr k – :r [ ] r k – r

E Xj:r [ ] r!

( ) j – 1 !( ) r j – ! ---------------------------------- X F( ) F j – 1

× ( ) 1 – F r j – dF

0

1

∫ =

a

b⎝ ⎠ ⎛ ⎞ a!

b!( ) a b – ! = -----------------------

λ1 X F( )dF

0

1

∫ =

λ2 X F( ) × ( ) 2F – 1 dF

0

1

∫ =

λ3 X F( ) 6F2

× ( ) – 6F + 1 dF

0

1

∫ =

λ4 X F( ) 20F3 30F2

× ( ) – + + 12F 1 dF

0

1

∫ =

L-CV

λ2

λ1

= = ----- coefficient of L-variation

τ3

λ3

λ2

= = ----- L-skew

τ4

λ4

λ2

= = ----- L-kurtosis

τ5

λ5

λ2

= = ----- not named
98 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Sample L-moments

The sample L-moments are computed from the sample order statistics . In the most compact notation, the 

sample L-moments are

,

where represents the order of the L-moments and represents the sample size.

The sample L-moment ratios are

,

,

, and

.

x1:n x2:n ... xn:n ≤ ≤≤

lr

1

r

--

( ) –1 k r – 1

⎝ ⎠ k

⎛ ⎞ i – 1

⎝ ⎠ r k – – 1

⎛ ⎞ n i –

⎝ ⎠ k

⎛ ⎞

k = 0

r – 1

∑

n

⎝ ⎠r

⎛ ⎞

-----------------------------------------------------------------------------------

i = 1

n

∑ xi:n =

r n

L-CV

l

2

l

1

= = --- coefficient of L-variation

t3

l

3

l

2

= = --- L-skew

t

4

l

4

l

2

= = --- L-kurtosis

t

5

l

5

l

2

= = --- not named
Statistical Characteristics 

of Storm Interevent Time, 

Depth, and Duration for 

Eastern New Mexico, 

Oklahoma, and Texas

Appendix 2

Appendix 2—

Storm Statistics for Hourly Rainfall

Stations in Eastern New Mexico
Blank Page
Appendix 2 101

Appendix 2–1.1. Number of storms, total duration, and mean storm interevent time defined by 6-hour minimum interevent time for hourly 

rainfall stations in eastern New Mexico. 

Appendix 2–1.2. Number of storms, total duration, and mean storm interevent time defined by 8-hour minimum interevent time for hourly 

rainfall stations in eastern New Mexico.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0199 1,367 300,612 8.99 1963 2,598 468,726 7.36 4860 141 19,008 5.42 7649 3,462 439,618 5.09

0205 1,020 239,640 9.60 1982 1,744 312,660 7.36 4862 1,160 171,413 6.04 7651 4,53 52,600 4.69

0208 383 84,000 8.96 2030 2,511 484,051 7.89 5370 1,906 481,217 10.36 7735 1,648 237,408 5.75

0404 284 30,486 4.32 2139 120 32,112 10.91 5651 177 47,472 10.99 7736 2,041 246,584 4.86

0407 490 79,451 6.63 2203 732 142,204 7.97 5866 143 19,752 5.48 7738 198 36,216 7.38

0600 1,990 484,110 9.98 2207 486 140,709 11.90 6138 1,172 197,952 6.81 8072 1,539 213,312 5.56

0606 82 19,752 9.88 2510 2,557 484,087 7.72 6275 2,636 371,738 5.68 8078 411 75,240 7.43

0646 541 113,256 8.52 2625 518 124,200 9.78 6435 1,857 483,422 10.68 8084 66 18,288 11.38

1120 3,914 484,063 4.96 2665 2,838 484,030 6.90 6492 223 59,160 10.88 8085 1,812 269,810 6.04

1440 1,639 236,375 5.87 2694 200 18,288 3.55 6619 561 152,664 11.17 8187 500 109,560 8.96

1446 746 212,592 11.68 2700 3,706 484,034 5.30 6659 1,797 428,041 9.74 8358 73 27,048 15.25

1469 1,906 484,212 10.42 3145 880 236,328 10.99 6797 468 84,168 7.26 8501 2,875 483,300 6.83

1475 68 16,488 9.95 3242 28 20,496 30.12 6951 270 53,448 8.05 8518 2,352 420,902 7.29

1480 2 600 12.50 3288 169 48,960 11.80 7094 2,923 483,320 6.72 8596 1,145 245,220 8.80

1515 2,844 484,215 6.93 3374 1,155 175,320 6.11 7254 1,494 294,248 8.05 8788 832 121,224 5.80

1807 158 57,696 15.02 4026 1 2,256 94.00 7277 2 2,160 45.00 8816 1 3,624 151.00

1840 635 130,730 8.46 4028 360 91,032 10.38 7279 2,311 335,939 5.92 9148 8 8,808 45.53

1881 5 504 4.03 4030 187 54,485 12.03 7283 1,437 167,256 4.67 9153 132 28,248 8.75

1887 3,083 483,991 6.35 4089 2,624 484,016 7.51 7604 5 552 4.32 9156 2,432 483,287 8.12

1939 2,526 468,627 7.55 4112 1,244 294,907 9.74 7605 31 11,208 14.96 9193 981 159,171 6.64

1950 32 15,336 19.74 4306 619 124,200 8.16 7609 1,191 219,864 7.49 9265 643 168,048 10.77

1956 48 15,336 13.10 4850 1,510 242,472 6.52 7610 1,234 254,143 8.41 9569 594 142,953 9.91

1961 43 15,336 14.61 4856 340 62,088 7.41 7638 2,825 483,293 6.96 9686 1,964 483,331 10.09

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0199 1,274 300,612 9.62 1963 2,459 468,726 7.76 4860 137 19,008 5.57 7649 3,209 439,618 5.47

0205 978 239,640 10.00 1982 1,656 312,660 7.74 4862 1,102 171,413 6.34 7651 417 52,600 5.07

0208 367 84,000 9.33 2030 2,415 484,051 8.19 5370 1,807 481,217 10.91 7735 1,556 237,408 6.07

0404 257 30,486 4.75 2139 116 32,112 11.27 5651 168 47,472 11.56 7736 1,887 246,584 5.23

0407 452 79,451 7.17 2203 685 142,204 8.50 5866 136 19,752 5.75 7738 185 36,216 7.88

0600 1,908 484,110 10.40 2207 466 140,709 12.40 6138 1,094 197,952 7.27 8072 1,449 213,312 5.89

0606 80 19,752 10.12 2510 2,419 484,087 8.14 6275 2,476 371,738 6.03 8078 392 75,240 7.78

0646 507 113,256 9.07 2625 491 124,200 10.31 6435 1,768 483,422 11.20 8084 63 18,288 11.91

1120 3,635 484,063 5.32 2665 2,693 484,030 7.25 6492 208 59,160 11.65 8085 1,687 269,810 6.46

1440 1,547 236,375 6.21 2694 174 18,288 4.03 6619 543 152,664 11.53 8187 477 109,560 9.38

1446 716 212,592 12.16 2700 3,522 484,034 5.56 6659 1,705 428,041 10.25 8358 70 27,048 15.89

1469 1,827 484,212 10.86 3145 826 236,328 11.69 6797 445 84,168 7.62 8501 2,710 483,300 7.23

1475 68 16,488 9.95 3242 27 20,496 31.23 6951 256 53,448 8.47 8518 2,236 420,902 7.65

1480 2 600 12.50 3288 158 48,960 12.60 7094 2,755 483,320 7.11 8596 1,090 245,220 9.24

1515 2,708 484,215 7.27 3374 1,089 175,320 6.47 7254 1,431 294,248 8.39 8788 780 121,224 6.17

1807 156 57,696 15.21 4026 1 2,256 94.00 7277 2 2,160 45.00 8816 1 3,624 151.00

1840 601 130,730 8.92 4028 348 91,032 10.73 7279 2,186 335,939 6.25 9148 7 8,808 51.99

1881 4 504 5.25 4030 179 54,485 12.56 7283 1,364 167,256 4.90 9153 131 28,248 8.81

1887 2,935 483,991 6.66 4089 2,446 484,016 8.04 7604 5 552 4.32 9156 2,332 483,287 8.46

1939 2,404 468,627 7.92 4112 1,184 294,907 10.22 7605 30 11,208 15.45 9193 918 159,171 7.08

1950 30 15,336 21.04 4306 601 124,200 8.40 7609 1,130 219,864 7.88 9265 607 168,048 11.39

1956 45 15,336 13.95 4850 1,435 242,472 6.85 7610 1,159 254,143 8.94 9569 569 142,953 10.34

1961 41 15,336 15.31 4856 324 62,088 7.76 7638 2,679 483,293 7.33 9686 1,876 483,331 10.55
102 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–1.3. Number of storms, total duration, and mean storm interevent time defined by 12-hour minimum interevent time for 

hourly rainfall stations in eastern New Mexico. 

Appendix 2–1.4. Number of storms, total duration, and mean storm interevent time defined by 18-hour minimum interevent time for 

hourly rainfall stations in eastern New Mexico. 

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0199 1,174 300,612 10.41 1963 2,281 468,726 8.34 4860 128 19,008 5.94 7649 2,920 439,618 5.97

0205 924 239,640 10.56 1982 1,511 312,660 8.44 4862 1,013 171,413 6.86 7651 376 52,600 5.58

0208 337 84,000 10.13 2030 2,274 484,051 8.68 5370 1,664 481,217 11.82 7735 1,414 237,408 6.64

0404 229 30,486 5.28 2139 106 32,112 12.30 5651 157 47,472 12.35 7736 1,691 246,584 5.79

0407 398 79,451 8.08 2203 620 142,204 9.35 5866 124 19,752 6.27 7738 168 36,216 8.63

0600 1,764 484,110 11.22 2207 431 140,709 13.37 6138 995 197,952 7.96 8072 1,316 213,312 6.45

0606 73 19,752 11.06 2510 2,232 484,087 8.79 6275 2,274 371,738 6.53 8078 364 75,240 8.35

0646 481 113,256 9.54 2625 460 124,200 10.97 6435 1,627 483,422 12.14 8084 63 18,288 11.91

1120 3,253 484,063 5.90 2665 2,487 484,030 7.82 6492 192 59,160 12.59 8085 1,533 269,810 7.07

1440 1,414 236,375 6.76 2694 155 18,288 4.48 6619 522 152,664 11.98 8187 453 109,560 9.85

1446 664 212,592 13.08 2700 3,245 484,034 6.00 6659 1,599 428,041 10.91 8358 67 27,048 16.58

1469 1,703 484,212 11.63 3145 776 236,328 12.42 6797 410 84,168 8.24 8501 2,553 483,300 7.65

1475 62 16,488 10.87 3242 27 20,496 31.23 6951 244 53,448 8.87 8518 2,074 420,902 8.22

1480 2 600 12.50 3288 142 48,960 13.98 7094 2,527 483,320 7.72 8596 1,009 245,220 9.95

1515 2,506 484,215 7.82 3374 1,017 175,320 6.90 7254 1,321 294,248 9.05 8788 728 121,224 6.58

1807 150 57,696 15.81 4026 1 2,256 94.00 7277 2 2,160 45.00 8816 1 3,624 151.00

1840 557 130,730 9.60 4028 332 91,032 11.22 7279 2,028 335,939 6.70 9148 7 8,808 51.99

1881 3 504 7.00 4030 169 54,485 13.28 7283 1,256 167,256 5.29 9153 118 28,248 9.73

1887 2,755 483,991 7.07 4089 2,231 484,016 8.78 7604 5 552 4.32 9156 2,186 483,287 9.00

1939 2,225 468,627 8.53 4112 1,085 294,907 11.11 7605 26 11,208 17.76 9193 837 159,171 7.72

1950 27 15,336 23.34 4306 566 124,200 8.89 7609 1,051 219,864 8.45 9265 568 168,048 12.15

1956 44 15,336 14.26 4850 1,314 242,472 7.44 7610 1,068 254,143 9.66 9569 534 142,953 10.99

1961 39 15,336 16.07 4856 302 62,088 8.29 7638 2,490 483,293 7.86 9686 1,729 483,331 11.42

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0199 1,075 300,612 11.31 1963 2,061 468,726 9.16 4860 113 19,008 6.64 7649 2,594 439,618 6.65

0205 869 239,640 11.19 1982 1,362 312,660 9.30 4862 891 171,413 7.72 7651 324 52,600 6.38

0208 315 84,000 10.80 2030 2,096 484,051 9.36 5370 1,544 481,217 12.69 7735 1,243 237,408 7.47

0404 202 30,486 5.90 2139 95 32,112 13.65 5651 147 47,472 13.15 7736 1,482 246,584 6.52

0407 334 79,451 9.52 2203 558 142,204 10.32 5866 113 19,752 6.82 7738 142 36,216 10.11

0600 1,630 484,110 12.09 2207 386 140,709 14.85 6138 900 197,952 8.73 8072 1,185 213,312 7.09

0606 71 19,752 11.35 2510 2,010 484,087 9.69 6275 1,999 371,738 7.35 8078 328 75,240 9.20

0646 439 113,256 10.39 2625 436 124,200 11.54 6435 1,496 483,422 13.15 8084 57 18,288 13.10

1120 2,850 484,063 6.64 2665 2,256 484,030 8.56 6492 177 59,160 13.60 8085 1,378 269,810 7.80

1440 1,266 236,375 7.48 2694 137 18,288 4.99 6619 488 152,664 12.77 8187 429 109,560 10.37

1446 622 212,592 13.92 2700 2,931 484,034 6.58 6659 1,476 428,041 11.77 8358 62 27,048 17.87

1469 1,579 484,212 12.49 3145 730 236,328 13.16 6797 378 84,168 8.88 8501 2,337 483,300 8.30

1475 55 16,488 12.20 3242 20 20,496 41.95 6951 229 53,448 9.41 8518 1,872 420,902 9.04

1480 2 600 12.50 3288 130 48,960 15.21 7094 2,268 483,320 8.53 8596 927 245,220 10.77

1515 2,270 484,215 8.57 3374 913 175,320 7.62 7254 1,207 294,248 9.85 8788 634 121,224 7.47

1807 140 57,696 16.89 4026 1 2,256 94.00 7277 2 2,160 45.00 8816 1 3,624 151.00

1840 524 130,730 10.16 4028 319 91,032 11.66 7279 1,844 335,939 7.31 9148 6 8,808 60.57

1881 3 504 7.00 4030 152 54,485 14.70 7283 1,121 167,256 5.86 9153 107 28,248 10.66

1887 2,535 483,991 7.63 4089 2,026 484,016 9.60 7604 4 552 5.75 9156 2,015 483,287 9.71

1939 2,052 468,627 9.20 4112 994 294,907 12.07 7605 23 11,208 19.99 9193 759 159,171 8.46

1950 27 15,336 23.34 4306 517 124,200 9.68 7609 961 219,864 9.18 9265 516 168,048 13.31

1956 40 15,336 15.62 4850 1,193 242,472 8.13 7610 968 254,143 10.60 9569 499 142,953 11.72

1961 35 15,336 17.84 4856 273 62,088 9.11 7638 2,249 483,293 8.63 9686 1,610 483,331 12.22
Appendix 2 103

Appendix 2–1.5. Number of storms, total duration, and mean storm interevent time defined by 24-hour minimum interevent time for 

hourly rainfall stations in eastern New Mexico. 

Appendix 2–1.6. Number of storms, total duration, and mean storm interevent time defined by 48-hour minimum interevent time for 

hourly rainfall stations in eastern New Mexico. 

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0199 982 300,612 12.30 1963 1,871 468,726 10.01 4860 97 19,008 7.60 7649 2,219 439,618 7.63

0205 809 239,640 11.96 1982 1,233 312,660 10.18 4862 771 171,413 8.79 7651 276 52,600 7.34

0208 278 84,000 12.12 2030 1,892 484,051 10.28 5370 1,424 481,217 13.69 7735 1,063 237,408 8.59

0404 176 30,486 6.64 2139 82 32,112 15.69 5651 142 47,472 13.58 7736 1,269 246,584 7.47

0407 277 79,451 11.30 2203 518 142,204 11.05 5866 91 19,752 8.27 7738 124 36,216 11.46

0600 1,524 484,110 12.87 2207 348 140,709 16.38 6138 786 197,952 9.88 8072 1,044 213,312 7.93

0606 59 19,752 13.47 2510 1,797 484,087 10.74 6275 1,721 371,738 8.40 8078 300 75,240 9.98

0646 390 113,256 11.59 2625 409 124,200 12.25 6435 1,371 483,422 14.27 8084 53 18,288 14.02

1120 2,429 484,063 7.65 2665 2,027 484,030 9.43 6492 159 59,160 15.04 8085 1,223 269,810 8.68

1440 1,097 236,375 8.50 2694 105 18,288 6.25 6619 429 152,664 14.41 8187 362 109,560 12.13

1446 585 212,592 14.75 2700 2,542 484,034 7.46 6659 1,369 428,041 12.62 8358 60 27,048 18.44

1469 1,467 484,212 13.38 3145 689 236,328 13.90 6797 330 84,168 10.05 8501 2,076 483,300 9.24

1475 53 16,488 12.62 3242 19 20,496 44.12 6951 215 53,448 9.97 8518 1,685 420,902 9.95

1480 2 600 12.50 3288 115 48,960 17.09 7094 2,061 483,320 9.30 8596 853 245,220 11.64

1515 2,038 484,215 9.45 3374 832 175,320 8.27 7254 1,100 294,248 10.73 8788 546 121,224 8.54

1807 132 57,696 17.87 4026 0 2,256 -- 7277 2 2,160 45.00 8816 1 3,624 151.00

1840 464 130,730 11.36 4028 296 91,032 12.50 7279 1,643 335,939 8.10 9148 5 8,808 72.52

1881 3 504 7.00 4030 147 54,485 15.16 7283 909 167,256 7.02 9153 98 28,248 11.57

1887 2,234 483,991 8.54 4089 1,832 484,016 10.53 7604 4 552 5.75 9156 1,831 483,287 10.60

1939 1,874 468,627 9.99 4112 922 294,907 12.95 7605 20 11,208 22.85 9193 692 159,171 9.19

1950 26 15,336 24.21 4306 465 124,200 10.66 7609 863 219,864 10.13 9265 473 168,048 14.45

1956 38 15,336 16.40 4850 1,020 242,472 9.37 7610 880 254,143 11.58 9569 449 142,953 12.93

1961 35 15,336 17.84 4856 247 62,088 9.97 7638 1,973 483,293 9.72 9686 1,489 483,331 13.14

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0199 825 300,612 14.37 1963 1,543 468,726 11.83 4860 77 19,008 9.21 7649 1,640 439,618 9.81

0205 682 239,640 13.91 1982 996 312,660 12.27 4862 593 171,413 11.00 7651 203 52,600 9.46

0208 236 84,000 14.01 2030 1,549 484,051 12.24 5370 1,225 481,217 15.67 7735 842 237,408 10.47

0404 134 30,486 8.27 2139 62 32,112 20.28 5651 132 47,472 14.50 7736 939 246,584 9.59

0407 198 79,451 15.23 2203 430 142,204 13.02 5866 66 19,752 10.83 7738 108 36,216 12.93

0600 1,317 484,110 14.67 2207 288 140,709 19.50 6138 608 197,952 12.34 8072 836 213,312 9.55

0606 45 19,752 17.25 2510 1,467 484,087 12.83 6275 1,319 371,738 10.51 8078 254 75,240 11.52

0646 329 113,256 13.46 2625 350 124,200 14.07 6435 1,168 483,422 16.50 8084 48 18,288 15.37

1120 1,783 484,063 9.90 2665 1,646 484,030 11.27 6492 135 59,160 17.45 8085 986 269,810 10.42

1440 867 236,375 10.37 2694 73 18,288 8.39 6619 360 152,664 16.89 8187 293 109,560 14.61

1446 512 212,592 16.64 2700 1,927 484,034 9.37 6659 1,164 428,041 14.59 8358 53 27,048 20.67

1469 1,271 484,212 15.23 3145 599 236,328 15.76 6797 259 84,168 12.41 8501 1,660 483,300 11.20

1475 49 16,488 13.53 3242 17 20,496 49.13 6951 178 53,448 11.70 8518 1,384 420,902 11.79

1480 2 600 12.50 3288 92 48,960 20.99 7094 1,658 483,320 11.21 8596 705 245,220 13.78

1515 1,640 484,215 11.39 3374 672 175,320 9.90 7254 924 294,248 12.51 8788 421 121,224 10.65

1807 119 57,696 19.66 4026 0 2,256 -- 7277 2 2,160 45.00 8816 1 3,624 151.00

1840 379 130,730 13.59 4028 255 91,032 14.26 7279 1,303 335,939 9.83 9148 3 8,808 122.33

1881 1 504 21.00 4030 116 54,485 18.85 7283 681 167,256 8.88 9153 72 28,248 15.18

1887 1,754 483,991 10.48 4089 1,514 484,016 12.44 7604 3 552 7.67 9156 1,542 483,287 12.31

1939 1,568 468,627 11.66 4112 779 294,907 15.06 7605 18 11,208 25.23 9193 556 159,171 11.09

1950 23 15,336 27.16 4306 387 124,200 12.52 7609 714 219,864 11.94 9265 402 168,048 16.75

1956 31 15,336 19.72 4850 802 242,472 11.53 7610 748 254,143 13.37 9569 387 142,953 14.78

1961 30 15,336 20.57 4856 206 62,088 11.67 7638 1,594 483,293 11.69 9686 1,256 483,331 15.31
104 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–1.7. Number of storms, total duration, and mean storm interevent time defined by 72-hour minimum interevent time for 

hourly rainfall stations in eastern New Mexico. 

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0199 708 300,612 16.34 1963 1,305 468,726 13.54 4860 62 19,008 10.83 7649 1,337 439,618 11.47

0205 599 239,640 15.49 1982 852 312,660 13.92 4862 489 171,413 12.83 7651 166 52,600 10.99

0208 205 84,000 15.76 2030 1,329 484,051 13.86 5370 1,095 481,217 17.24 7735 706 237,408 12.02

0404 96 30,486 10.57 2139 53 32,112 23.35 5651 117 47,472 16.03 7736 766 246,584 11.20

0407 162 79,451 18.05 2203 385 142,204 14.26 5866 46 19,752 14.49 7738 91 36,216 14.89

0600 1,157 484,110 16.36 2207 250 140,709 22.09 6138 498 197,952 14.51 8072 684 213,312 11.11

0606 37 19,752 20.53 2510 1,281 484,087 14.33 6275 1,116 371,738 11.97 8078 214 75,240 13.21

0646 276 113,256 15.57 2625 298 124,200 16.08 6435 1,024 483,422 18.48 8084 41 18,288 17.55

1120 1,416 484,063 11.83 2665 1,394 484,030 12.87 6492 120 59,160 19.32 8085 832 269,810 11.89

1440 737 236,375 11.76 2694 59 18,288 9.76 6619 312 152,664 19.11 8187 261 109,560 16.09

1446 454 212,592 18.45 2700 1,579 484,034 10.90 6659 1,034 428,041 16.12 8358 49 27,048 22.15

1469 1,136 484,212 16.75 3145 550 236,328 16.95 6797 218 84,168 14.27 8501 1,393 483,300 12.87

1475 41 16,488 15.65 3242 15 20,496 55.34 6951 152 53,448 13.29 8518 1,169 420,902 13.51

1480 1 600 25.00 3288 74 48,960 25.49 7094 1,402 483,320 12.80 8596 612 245,220 15.50

1515 1,380 484,215 13.07 3374 573 175,320 11.19 7254 796 294,248 14.12 8788 354 121,224 12.19

1807 108 57,696 21.40 4026 0 2,256 -- 7277 2 2,160 45.00 8816 1 3,624 151.00

1840 331 130,730 15.20 4028 222 91,032 16.01 7279 1,072 335,939 11.42 9148 2 8,808 183.50

1881 1 504 21.00 4030 104 54,485 20.75 7283 543 167,256 10.49 9153 63 28,248 16.96

1887 1,467 483,991 12.05 4089 1,299 484,016 14.10 7604 2 552 11.50 9156 1,334 483,287 13.84

1939 1,346 468,627 13.18 4112 691 294,907 16.66 7605 15 11,208 29.80 9193 465 159,171 12.78

1950 21 15,336 29.51 4306 326 124,200 14.39 7609 618 219,864 13.41 9265 363 168,048 18.30

1956 26 15,336 23.04 4850 662 242,472 13.44 7610 661 254,143 14.80 9569 330 142,953 16.91

1961 24 15,336 25.10 4856 169 62,088 13.68 7638 1,357 483,293 13.29 9686 1,103 483,331 17.09
Appendix 2 105

Appendix 2–2.1. L-moments of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available]

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0199 0.26744 0.13652 0.51048 0.46372 0.25769 0.12387 4860 0.25298 0.15306 0.60502 0.54444 0.33200 0.20413

0205 .26399 .16236 .61503 .53188 .32677 .22765 4862 .28971 .14096 .48657 .55900 .27132 .15749

0208 .21238 .11126 .52386 .42549 .20768 .12692 5370 .34465 .19869 .57650 .55189 .34540 .22082

0404 .29155 .14655 .50266 .61466 .36450 .26924 5651 .26045 .14685 .56381 .48115 .26032 .14918

0407 .23041 .10062 .43669 .59848 .30026 .17140 5866 .34021 .19903 .58502 .46142 .22851 .15173

0600 .28481 .16297 .57219 .55504 .35913 .21296 6138 .24529 .14477 .59021 .50546 .29449 .19753

0606 .26878 .12729 .47357 .36271 .20509 .10423 6275 .25631 .13912 .54279 .50064 .29651 .15614

0646 .29168 .16125 .55283 .47300 .28024 .18503 6435 .25634 .14156 .55224 .50252 .30459 .17476

1120 .30475 .15987 .52457 .47994 .26385 .14000 6492 .17969 .11034 .61409 .53948 .33866 .23680

1440 .26650 .12826 .48130 .53185 .27897 .14270 6619 .32843 .18725 .57013 .48386 .27723 .17620

1446 .35088 .20757 .59155 .48887 .26583 .16594 6659 .36223 .21823 .60247 .54845 .33567 .20983

1469 .33063 .19582 .59224 .55809 .35431 .22446 6797 .21286 .12396 .58235 .52998 .34994 .25277

1475 .29985 .20200 .67365 .57128 .31308 .18802 6951 .27478 .16631 .60527 .50067 .25975 .14841

1480 -- -- -- -- -- -- 7094 .23486 .12162 .51784 .49660 .30121 .15688

1515 .22585 .12007 .53165 .46540 .26710 .13799 7254 .26117 .14355 .54963 .54496 .35284 .19951

1807 .24778 .13295 .53657 .39702 .18541 .11432 7277 -- -- -- -- -- --

1840 .32161 .16667 .51824 .59455 .34606 .24809 7279 .26822 .13226 .49310 .54595 .30895 .17066

1881 -- -- -- -- -- -- 7283 .19001 .12664 .66648 .56644 .33423 .22419

1887 .23973 .15717 .65559 .55225 .32973 .22439 7604 .18200 .11400 .62637 .24561 -.31579 -.24561

1939 .34381 .19793 .57568 .51153 .29776 .17417 7605 .27419 .12774 .46588 .51306 .16567 .03286

1950 .42063 .24183 .57494 .44714 .23209 .17596 7609 .21892 .14779 .67508 .56849 .33348 .22676

1956 .26333 .16124 .61231 .55667 .39536 .32022 7610 .29001 .18276 .63018 .56101 .36482 .23056

1961 .31977 .19870 .62140 .47974 .20962 .08397 7638 .29020 .15546 .53569 .51253 .29315 .15175

1963 .32377 .18600 .57448 .54248 .32405 .18140 7649 .27170 .14896 .54825 .45660 .24775 .13416

1982 .23148 .10147 .43835 .59930 .30102 .16937 7651 .30773 .14523 .47193 .49588 .21561 .14211

2030 .29068 .15981 .54978 .51588 .30841 .16558 7735 .30510 .17251 .56541 .47439 .27158 .17541

2139 .24925 .13627 .54672 .44292 .23072 .14358 7736 .33840 .17832 .52693 .51479 .27250 .16120

2203 .35260 .19212 .54486 .60708 .35019 .24298 7738 .33172 .19583 .59035 .45304 .22155 .12762

2207 .33479 .17603 .52579 .48059 .26267 .15892 8072 .20569 .11920 .57954 .49537 .28659 .18451

2510 .27286 .14540 .53287 .51432 .30866 .17443 8078 .18088 .10409 .57545 .48823 .29268 .19370

2625 .27842 .17757 .63778 .59243 .39438 .29346 8084 .21333 .10845 .50837 .46517 .30696 .20637

2665 .25781 .13857 .53748 .48062 .27194 .14346 8085 .21802 .11056 .50711 .48920 .30298 .14099

2694 .24075 .14615 .60705 .49702 .28883 .22302 8187 .30280 .18026 .59530 .51431 .30556 .20610

2700 .19541 .08872 .45401 .52657 .34724 .14818 8358 .25534 .14681 .57496 .52922 .34283 .23250

3145 .25823 .15435 .59774 .53447 .31759 .19529 8501 .27210 .15543 .57124 .50632 .30191 .17852

3242 .39036 .18967 .48589 .39728 .14091 .00033 8518 .21598 .11964 .55396 .50423 .31043 .18066

3288 .27219 .14698 .53999 .41514 .19806 .10369 8596 .32249 .17025 .52793 .58071 .31507 .18989

3374 .19020 .11337 .59608 .52474 .30234 .18589 8788 .28450 .15507 .54508 .43866 .23460 .14198

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 .30486 .19552 .64135 .53391 .29031 .17074 9148 .10250 .03929 .38328 -.10909 .04545 .52727

4030 .33743 .17557 .52030 .55494 .26825 .17243 9153 .31371 .19687 .62753 .51197 .29828 .20171

4089 .27467 .15447 .56240 .52146 .31147 .16898 9156 .32439 .18045 .55627 .51085 .28897 .15352

4112 .32510 .17852 .54911 .59447 .36332 .23386 9193 .25800 .12618 .48905 .61358 .35423 .21048

4306 .23532 .13796 .58626 .48563 .25978 .16316 9265 .32373 .18156 .56083 .58822 .37256 .23291

4850 .24952 .14030 .56225 .51771 .33236 .20256 9569 .32879 .16792 .51072 .54357 .24645 .13747

4856 .24503 .15078 .61534 .51869 .29042 .18335 9686 .21967 .11781 .53628 .48531 .29173 .15428
106 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–2.2. L-moments of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available]

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0199 0.28696 0.14875 0.51836 0.46889 0.26099 0.13389 4860 0.26036 0.15969 0.61332 0.54834 0.32902 0.19751

0205 .27533 .16810 .61055 .52681 .32465 .22687 4862 .30495 .14977 .49113 .54291 .25922 .15348

0208 .22163 .11480 .51795 .42046 .21228 .13170 5370 .36353 .20898 .57486 .54487 .33561 .21645

0404 .32218 .16468 .51115 .58422 .33698 .24685 5651 .27440 .15433 .56241 .47719 .25254 .14402

0407 .24978 .11388 .45590 .58819 .30103 .18290 5866 .35772 .21078 .58924 .45778 .21620 .13846

0600 .29705 .17066 .57453 .55093 .35020 .20829 6138 .26278 .15389 .58561 .49537 .28606 .19223

0606 .27550 .12820 .46533 .35619 .20050 .10239 6275 .27287 .14841 .54388 .49662 .28759 .15392

0646 .31124 .16909 .54328 .46823 .27543 .17722 6435 .26924 .14903 .55351 .50374 .30737 .18515

1120 .32815 .17239 .52536 .47198 .25522 .14207 6492 .19264 .11732 .60900 .53433 .32983 .22864

1440 .28235 .13694 .48499 .51347 .26167 .14049 6619 .33932 .19282 .56827 .48167 .27190 .16859

1446 .36559 .21452 .58679 .48321 .26171 .16439 6659 .38178 .23138 .60606 .55003 .33882 .21962

1469 .34493 .20464 .59327 .55258 .34576 .21867 6797 .22387 .12966 .57918 .52919 .35297 .25433

1475 .29985 .20200 .67365 .57128 .31308 .18802 6951 .28980 .17456 .60232 .49190 .24870 .14309

1480 -- -- -- -- -- -- 7094 .24919 .12945 .51948 .48860 .28481 .14847

1515 .23719 .12633 .53259 .46049 .25804 .13339 7254 .27267 .14991 .54978 .53985 .34399 .19635

1807 .25096 .13469 .53671 .39714 .18401 .11184 7277 -- -- -- -- -- --

1840 .33980 .17974 .52896 .59058 .33973 .23897 7279 .28356 .14166 .49960 .53659 .30115 .17444

1881 -- -- -- -- -- -- 7283 .20018 .13360 .66738 .56771 .33685 .22541

1887 .25182 .16446 .65309 .54828 .32737 .22433 7604 .18200 .11400 .62637 .24561 -.31579 -.24561

1939 .36125 .20803 .57586 .50887 .29474 .17609 7605 .28333 .13207 .46613 .48887 .13845 .01985

1950 .44867 .25200 .56166 .42651 .22969 .17747 7609 .23073 .15532 .67314 .56716 .33401 .22767

1956 .28089 .16943 .60321 .55362 .38825 .29932 7610 .30877 .19438 .62951 .55611 .35487 .22188

1961 .33537 .20704 .61735 .45304 .17762 .07806 7638 .30601 .16476 .53842 .50790 .28630 .15162

1963 .34207 .19775 .57808 .54361 .32512 .18950 7649 .29312 .16107 .54951 .45621 .24647 .13793

1982 .24378 .10924 .44813 .58277 .28696 .16548 7651 .33429 .16057 .48033 .48356 .21667 .14974

2030 .30224 .16693 .55232 .51276 .30207 .16277 7735 .32314 .18106 .56031 .46756 .26425 .16730

2139 .25784 .14072 .54574 .42744 .21325 .13732 7736 .36602 .19251 .52595 .50202 .25838 .15998

2203 .37679 .20627 .54746 .59302 .34891 .25478 7738 .35503 .20368 .57370 .43293 .21162 .12183

2207 .34916 .18566 .53172 .49145 .27282 .16752 8072 .21846 .12631 .57818 .49254 .28496 .18517

2510 .28842 .15391 .53362 .50848 .29736 .17103 8078 .18964 .10812 .57014 .47804 .28303 .18621

2625 .29373 .18612 .63366 .58513 .38717 .28665 8084 .22349 .11349 .50779 .45960 .29575 .20181

2665 .27169 .14489 .53330 .47310 .26313 .14182 8085 .23417 .11930 .50945 .48308 .28598 .13371

2694 .27672 .16252 .58731 .47906 .28216 .22114 8187 .31740 .18736 .59028 .50759 .30017 .20109

2700 .20562 .09471 .46063 .52372 .33258 .14560 8358 .26629 .15082 .56638 .51527 .33036 .23403

3145 .27511 .16326 .59344 .52948 .31449 .19924 8501 .28866 .16419 .56880 .49946 .29352 .17499

3242 .40481 .19359 .47822 .37458 .12443 -.00483 8518 .22718 .12559 .55280 .50145 .30489 .17779

3288 .29114 .15750 .54098 .42355 .21526 .12505 8596 .33876 .18018 .53189 .57446 .30833 .19137

3374 .20173 .11940 .59188 .51461 .29282 .18307 8788 .30346 .16239 .53511 .42499 .22235 .13313

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 .31537 .20321 .64434 .53679 .29348 .17488 9148 .11714 .05857 .50000 .15122 -.02439 .21951

4030 .35251 .18470 .52396 .54117 .25165 .15808 9153 .31611 .19757 .62500 .51065 .29771 .20115

4089 .29466 .16591 .56307 .51272 .29625 .16184 9156 .33830 .18872 .55784 .50543 .27832 .14734

4112 .34158 .18892 .55308 .58589 .35541 .23305 9193 .27571 .13673 .49593 .59023 .33202 .20464

4306 .24236 .14207 .58617 .48542 .25905 .16046 9265 .34293 .19541 .56983 .58779 .37434 .24073

4850 .26256 .14826 .56465 .52172 .33468 .20640 9569 .34323 .17651 .51427 .53346 .24117 .14015

4856 .25713 .15636 .60810 .50847 .28098 .17874 9686 .22998 .12351 .53704 .48226 .28493 .15195
Appendix 2 107

Appendix 2–2.3. L-moments of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available]

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0199 0.31141 0.16250 0.52183 0.46241 0.25509 0.14251 4860 0.27867 0.17191 0.61690 0.55105 0.32494 0.19163

0205 .29142 .17889 .61385 .52881 .32902 .23406 4862 .33175 .16574 .49961 .52842 .25754 .15972

0208 .24136 .12395 .51354 .43013 .23789 .16119 5370 .39477 .22843 .57863 .54037 .33454 .22361

0404 .36157 .18549 .51302 .55644 .33981 .27492 5651 .29363 .17020 .57965 .50487 .28995 .18977

0407 .28367 .13422 .47317 .55276 .27828 .17636 5866 .39234 .22468 .57267 .42535 .19440 .12741

0600 .32130 .18548 .57729 .54312 .34005 .21158 6138 .28892 .16914 .58541 .50032 .29667 .20141

0606 .30192 .14094 .46680 .36235 .20388 .09707 6275 .29711 .16147 .54346 .49132 .28049 .15851

0646 .32807 .17712 .53988 .46457 .27436 .17372 6435 .29258 .16193 .55347 .49927 .29769 .17998

1120 .36668 .19387 .52873 .46520 .24614 .14198 6492 .20870 .12412 .59473 .51313 .31512 .22653

1440 .30890 .15275 .49451 .49704 .25348 .14520 6619 .35297 .19861 .56268 .48059 .27004 .16158

1446 .39422 .23045 .58458 .47928 .26016 .16674 6659 .40709 .24793 .60904 .54701 .33402 .21862

1469 .37005 .22097 .59714 .54860 .34328 .22389 6797 .24298 .14093 .58000 .52755 .34870 .24803

1475 .32887 .22716 .69072 .60421 .36630 .24173 6951 .30406 .18223 .59931 .48324 .23811 .13626

1480 -- -- -- -- -- -- 7094 .27167 .14204 .52284 .47989 .27114 .14604

1515 .25631 .13677 .53360 .45371 .24790 .13177 7254 .29537 .16327 .55275 .53361 .32573 .18275

1807 .26100 .14313 .54840 .40621 .18682 .11869 7277 -- -- -- -- -- --

1840 .36664 .19338 .52743 .56321 .32213 .23022 7279 .30565 .15477 .50636 .52140 .28395 .16851

1881 -- -- -- -- -- -- 7283 .21740 .14438 .66415 .56142 .33143 .22144

1887 .26828 .17516 .65291 .54811 .32753 .22234 7604 .18200 .11400 .62637 .24561 -.31579 -.24561

1939 .39031 .22555 .57788 .50332 .29084 .17897 7605 .32692 .15246 .46635 .42230 .08492 -.03457

1950 .49852 .26091 .52337 .40582 .24066 .16482 7609 .24808 .16655 .67136 .56373 .33336 .22923

1956 .28727 .17439 .60704 .54683 .37020 .28306 7610 .33508 .20843 .62204 .54213 .33944 .21432

1961 .35256 .21089 .59816 .44118 .16822 .07771 7638 .32924 .17871 .54279 .49925 .27544 .14853

1963 .36876 .21528 .58378 .53983 .32081 .19285 7649 .32213 .17805 .55275 .45567 .24632 .14381

1982 .26717 .12481 .46714 .56631 .27725 .16907 7651 .37074 .18197 .49082 .46600 .20251 .13786

2030 .32098 .17905 .55783 .51174 .29858 .16484 7735 .35559 .19836 .55783 .46143 .25656 .15759

2139 .28217 .14727 .52191 .39947 .19981 .13514 7736 .40844 .21670 .53056 .49318 .25275 .16620

2203 .41629 .23104 .55500 .57927 .34438 .25579 7738 .39095 .22984 .58789 .45866 .22700 .12130

2207 .37752 .20387 .54003 .49140 .27978 .18769 8072 .24054 .13852 .57587 .48649 .27578 .17275

2510 .31259 .16774 .53662 .49797 .28199 .16654 8078 .20423 .11711 .57343 .47865 .28156 .18351

2625 .31352 .19825 .63233 .57523 .37406 .27549 8084 .22349 .11349 .50779 .45960 .29575 .20181

2665 .29420 .15709 .53397 .46587 .25401 .13998 8085 .25770 .13282 .51541 .47303 .26526 .12811

2694 .31065 .17649 .56813 .45340 .26397 .21160 8187 .33422 .19811 .59276 .50444 .29405 .19532

2700 .22317 .10493 .47017 .51445 .31232 .14829 8358 .27821 .15938 .57288 .51966 .32782 .21957

3145 .29284 .17434 .59535 .53355 .32109 .20681 8501 .30642 .17439 .56912 .49298 .28308 .16787

3242 .40481 .19359 .47822 .37458 .12443 -.00483 8518 .24493 .13698 .55926 .49749 .29145 .16652

3288 .32394 .18124 .55949 .45121 .24203 .14905 8596 .36596 .19629 .53637 .55493 .29385 .18928

3374 .21601 .12797 .59241 .51077 .28780 .17852 8788 .32514 .17253 .53063 .41485 .21145 .12255

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 .33057 .21445 .64874 .54124 .29621 .17453 9148 .11714 .05857 .50000 .15122 -.02439 .21951

4030 .37337 .19601 .52498 .51851 .22949 .14538 9153 .35093 .21969 .62603 .52353 .30705 .19986

4089 .32306 .18271 .56556 .51358 .29509 .16833 9156 .36090 .20289 .56218 .50738 .27912 .15407

4112 .37275 .20757 .55686 .57128 .34092 .23206 9193 .30239 .15287 .50555 .57216 .31272 .20123

4306 .25735 .15211 .59107 .48594 .25634 .15938 9265 .36648 .21227 .57921 .59357 .38970 .26807

4850 .28674 .16154 .56338 .50884 .31755 .19957 9569 .36573 .18997 .51943 .52019 .23399 .14064

4856 .27586 .16662 .60401 .50316 .27154 .16455 9686 .24953 .13457 .53930 .47115 .26744 .14595
108 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–2.4. L-moments of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available] 

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0199 0.34008 0.17819 0.52396 0.45506 0.25162 0.14773 4860 0.31566 0.19630 0.62186 0.54826 0.30678 0.16471

0205 .30986 .19166 .61853 .53395 .33277 .23496 4862 .37717 .19620 .52019 .52227 .25736 .16179

0208 .25822 .13263 .51363 .42524 .23160 .15539 5370 .42545 .24702 .58061 .53747 .33442 .23043

0404 .40990 .20784 .50704 .51795 .31960 .25546 5651 .31361 .17955 .57253 .47990 .26249 .17805

0407 .33802 .16648 .49250 .50816 .23847 .15176 5866 .43053 .25490 .59207 .44893 .20163 .10686

0600 .34771 .20286 .58340 .53978 .33470 .21440 6138 .31942 .18417 .57658 .48380 .28352 .19088

0606 .31042 .14321 .46134 .34696 .19489 .09463 6275 .33798 .18612 .55068 .48235 .26956 .16031

0646 .35945 .19296 .53680 .45260 .25836 .16205 6435 .31820 .17749 .55781 .50048 .29706 .18279

1120 .41853 .22197 .53036 .45467 .23550 .14278 6492 .22638 .13532 .59774 .52541 .32926 .23829

1440 .34502 .17326 .50219 .47816 .24217 .14161 6619 .37756 .21175 .56083 .47437 .26562 .15758

1446 .42084 .24598 .58451 .48062 .26720 .17928 6659 .44101 .27033 .61298 .54924 .33686 .22325

1469 .39911 .23876 .59823 .53728 .32953 .21681 6797 .26354 .15335 .58186 .51720 .33417 .23646

1475 .35945 .25608 .71241 .61799 .35927 .21129 6951 .32397 .19220 .59326 .46861 .22429 .12856

1480 -- -- -- -- -- -- 7094 .30269 .15974 .52774 .46914 .25810 .14698

1515 .28296 .15107 .53390 .44442 .23830 .13376 7254 .32327 .17945 .55512 .52286 .30885 .17475

1807 .27964 .15614 .55834 .42449 .21092 .14083 7277 -- -- -- -- -- --

1840 .38973 .20784 .53328 .55430 .31417 .22067 7279 .33615 .17547 .52201 .51632 .27753 .16261

1881 -- -- -- -- -- -- 7283 .24358 .16210 .66548 .55409 .32090 .21484

1887 .29156 .19028 .65262 .54543 .32432 .21712 7604 -- -- -- -- -- --

1939 .42322 .24703 .58370 .50436 .29285 .18390 7605 .36957 .17866 .48342 .41783 .10177 .00609

1950 .49852 .26091 .52337 .40582 .24066 .16482 7609 .27131 .18091 .66680 .55016 .31401 .21006

1956 .31600 .19133 .60549 .52158 .33050 .25089 7610 .36945 .22995 .62241 .54091 .33315 .20764

1961 .39286 .22484 .57232 .39124 .14340 .07728 7638 .36452 .20089 .55110 .49461 .26476 .14324

1963 .40813 .24086 .59015 .52834 .30529 .18515 7649 .36261 .20006 .55171 .44543 .24024 .14619

1982 .29640 .14248 .48070 .53567 .24990 .15630 7651 .43025 .21610 .50226 .44750 .19217 .12473

2030 .34824 .19746 .56702 .51576 .29928 .16995 7735 .40451 .22630 .55945 .46123 .25667 .16448

2139 .31484 .17252 .54797 .43158 .22642 .15039 7736 .46605 .24928 .53488 .48217 .25598 .17393

2203 .46254 .25977 .56161 .56393 .33022 .23711 7738 .46120 .26240 .56895 .43733 .20635 .09799

2207 .42153 .22863 .54239 .48447 .25615 .16253 8072 .26713 .15316 .57336 .47429 .26397 .16320

2510 .34711 .19007 .54759 .49819 .28041 .17296 8078 .22665 .13252 .58468 .50116 .31046 .20983

2625 .33078 .21061 .63669 .57956 .37632 .27253 8084 .24702 .13319 .53919 .50511 .32570 .20466

2665 .32432 .17432 .53749 .46352 .25284 .14648 8085 .28668 .15082 .52608 .46744 .25562 .13204

2694 .35146 .19340 .55027 .41544 .23997 .20394 8187 .35291 .20918 .59273 .50208 .28834 .18715

2700 .24708 .11993 .48539 .50738 .29604 .14913 8358 .30065 .17520 .58274 .54722 .36089 .25080

3145 .31129 .18578 .59681 .52612 .30899 .19590 8501 .33474 .19076 .56989 .48081 .26678 .15979

3242 .54650 .28034 .51298 .41563 .16115 .07700 8518 .27136 .15326 .56480 .49123 .27978 .16288

3288 .35385 .19852 .56104 .44586 .22059 .12267 8596 .39833 .21495 .53963 .53435 .27666 .17978

3374 .24061 .14362 .59690 .50463 .27824 .16896 8788 .37334 .19892 .53282 .41907 .21613 .12655

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 .34404 .22218 .64578 .53230 .28245 .16220 9148 .13667 .05867 .42927 .09659 .11932 .25568

4030 .41513 .21698 .52268 .48803 .22090 .15060 9153 .38701 .23561 .60881 .50242 .28882 .18615

4089 .35575 .20297 .57056 .50688 .28469 .16570 9156 .39152 .22021 .56245 .49692 .27070 .15497

4112 .40687 .22814 .56072 .55242 .31997 .21887 9193 .33347 .17065 .51175 .54443 .29270 .19692

4306 .28174 .17287 .61358 .51387 .28110 .17126 9265 .40341 .23750 .58874 .58975 .37823 .25602

4850 .31583 .18076 .57236 .50848 .30913 .19418 9569 .39138 .20421 .52176 .50502 .22720 .13793

4856 .30516 .18565 .60835 .51106 .28127 .17496 9686 .26798 .14627 .54582 .47308 .26610 .15073
Appendix 2 109

Appendix 2–2.5. L-moments of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available]

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0199 0.37229 0.19558 0.52534 0.44500 0.23744 0.13601 4860 0.36773 0.22682 0.61680 0.51533 0.26341 0.13530

0205 .33284 .20409 .61317 .52686 .32967 .23472 4862 .43588 .22969 .52697 .49115 .22825 .14001

0208 .29259 .15247 .52110 .42942 .23339 .16100 5370 .46131 .27021 .58575 .53502 .33380 .23355

0404 .47045 .24305 .51662 .50015 .29959 .22591 5651 .32465 .18324 .56443 .46816 .26174 .18087

0407 .40758 .20516 .50335 .46240 .19649 .11624 5866 .53462 .30529 .57104 .40649 .16630 .08464

0600 .37190 .21990 .59130 .54036 .33098 .21459 6138 .36575 .21215 .58005 .49057 .29632 .20501

0606 .37356 .17397 .46570 .33601 .14878 .06974 6275 .39257 .22249 .56675 .49328 .27808 .16990

0646 .40462 .21905 .54137 .43447 .23003 .13863 6435 .34721 .19421 .55935 .49360 .28846 .18079

1120 .49107 .26570 .54105 .45186 .23323 .14583 6492 .25201 .14764 .58585 .50515 .31578 .22952

1440 .39817 .20505 .51497 .46670 .23336 .13838 6619 .42949 .23937 .55734 .45916 .25380 .15897

1446 .44745 .25981 .58063 .47157 .26152 .17777 6659 .47548 .29203 .61417 .54630 .33369 .22197

1469 .42958 .25742 .59925 .53131 .32301 .21486 6797 .30188 .17624 .58381 .51311 .31749 .21007

1475 .37302 .26290 .70480 .60654 .34935 .20560 6951 .34507 .20326 .58905 .45807 .22192 .13296

1480 -- -- -- -- -- -- 7094 .33310 .17810 .53469 .46548 .25252 .14683

1515 .31517 .16845 .53448 .43386 .22529 .12948 7254 .35472 .19846 .55949 .51666 .29826 .17097

1807 .29659 .16528 .55726 .39916 .17923 .13043 7277 -- -- -- -- -- --

1840 .44013 .23817 .54114 .53242 .29265 .20132 7279 .37727 .19930 .52826 .49779 .25637 .15252

1881 -- -- -- -- -- -- 7283 .30039 .20036 .66701 .54513 .30516 .19473

1887 .33084 .21584 .65240 .54073 .31634 .20759 7604 -- -- -- -- -- --

1939 .46342 .27252 .58807 .50503 .29242 .18494 7605 .42500 .20079 .47245 .34906 .07049 .02229

1950 .51769 .28092 .54264 .42185 .22592 .12627 7609 .30212 .20174 .66774 .55263 .32166 .21706

1956 .33263 .19815 .59571 .51182 .32426 .24571 7610 .40640 .25462 .62653 .53399 .31520 .19046

1961 .39286 .22484 .57232 .39124 .14340 .07728 7638 .41551 .22780 .54824 .47321 .23767 .12832

1963 .44957 .26865 .59756 .52842 .29810 .17775 7649 .42389 .23349 .55084 .43625 .22998 .14036

1982 .32741 .16217 .49531 .52029 .23964 .15189 7651 .50507 .26743 .52949 .46520 .21810 .15050

2030 .38579 .22035 .57116 .51016 .28765 .16463 7735 .47300 .26739 .56531 .45343 .23547 .14414

2139 .36476 .20072 .55028 .45003 .24490 .14933 7736 .54427 .29355 .53934 .46832 .24570 .16616

2203 .49826 .28036 .56268 .54631 .31242 .22284 7738 .52815 .30133 .57054 .43141 .20657 .12105

2207 .46756 .25168 .53828 .45949 .22991 .14452 8072 .30321 .17596 .58034 .47853 .26565 .16432

2510 .38826 .21254 .54741 .48282 .26100 .16064 8078 .24780 .14352 .57919 .49352 .30357 .19805

2625 .35262 .22386 .63487 .57546 .36998 .26169 8084 .26566 .14021 .52778 .47113 .30011 .20016

2665 .36096 .19453 .53892 .45265 .23930 .13788 8085 .32302 .16941 .52447 .45221 .24361 .13291

2694 .45857 .24319 .53033 .40707 .27255 .23043 8187 .41823 .24999 .59773 .49251 .27097 .16319

2700 .28489 .14183 .49784 .49463 .27729 .15310 8358 .31067 .17830 .57393 .54495 .35700 .24552

3145 .32975 .19750 .59893 .52340 .30532 .19318 8501 .37682 .21675 .57522 .47893 .26237 .15810

3242 .57526 .29216 .50788 .37767 .12880 .08182 8518 .30147 .17117 .56779 .49018 .27863 .16481

3288 .40000 .22818 .57045 .46470 .24806 .14679 8596 .43275 .23668 .54692 .52410 .26203 .16052

3374 .26404 .15813 .59890 .49792 .26892 .16005 8788 .43352 .22722 .52414 .40411 .20854 .12535

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 .37051 .23875 .64440 .53210 .28235 .15413 9148 .16400 .09500 .57927 .38947 .21053 .46316

4030 .42925 .22461 .52326 .48009 .21665 .15110 9153 .41163 .26041 .63262 .53488 .31825 .20658

4089 .39342 .22927 .58275 .51713 .29487 .17766 9156 .43087 .24311 .56424 .48913 .26124 .15066

4112 .43864 .25041 .57087 .55200 .32185 .22102 9193 .36575 .19468 .53228 .55919 .31402 .22111

4306 .31325 .19189 .61260 .49693 .25890 .15317 9265 .44008 .25907 .58868 .56941 .35867 .24357

4850 .36939 .21426 .58002 .50720 .30067 .18842 9569 .43497 .22962 .52790 .48949 .22256 .13742

4856 .33729 .20870 .61875 .51148 .27560 .16193 9686 .28975 .15921 .54949 .47307 .26427 .15283
110 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–2.6. L-moments of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available] 

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0199 0.44314 0.23922 0.53983 0.45200 0.24513 0.14132 4860 0.46325 0.29879 0.64499 0.54787 0.32460 0.22630

0205 .39482 .24557 .62198 .52508 .32378 .22555 4862 .56671 .30494 .53809 .46078 .20759 .11053

0208 .34466 .18408 .53409 .43951 .23990 .16358 5370 .53562 .31515 .58838 .51914 .31405 .21789

0404 .61791 .32679 .52886 .46225 .24830 .15927 5651 .34924 .20351 .58272 .49606 .29323 .19902

0407 .57020 .29055 .50956 .40623 .17069 .10749 5866 .73712 .40246 .54599 .38243 .15573 .07081

0600 .43035 .25335 .58870 .52180 .30953 .20406 6138 .47283 .27779 .58751 .48327 .27778 .18458

0606 .48978 .23901 .48800 .34094 .08962 -.01920 6275 .51222 .29972 .58514 .49748 .27850 .17093

0646 .47964 .25911 .54023 .40943 .20125 .11835 6435 .40755 .23222 .56979 .49029 .27686 .17366

1120 .66899 .36800 .55008 .44528 .23597 .15485 6492 .29681 .17472 .58863 .51978 .35692 .28487

1440 .50379 .26841 .53279 .46235 .23559 .14078 6619 .51181 .28461 .55609 .44130 .23404 .14586

1446 .51125 .29884 .58452 .46380 .24379 .15370 6659 .55922 .34427 .61562 .53211 .31566 .20879

1469 .49582 .29770 .60042 .52091 .31435 .21307 6797 .38463 .22379 .58182 .50228 .29316 .17317

1475 .40347 .29389 .72842 .63814 .38531 .22614 6951 .41680 .25096 .60212 .48314 .26533 .17318

1480 -- -- -- -- -- -- 7094 .41406 .22599 .54578 .45353 .23690 .14009

1515 .39166 .21332 .54466 .44239 .23341 .14032 7254 .42228 .24144 .57176 .51216 .28901 .17225

1807 .32899 .18348 .55771 .39866 .17827 .11984 7277 -- -- -- -- -- --

1840 .53884 .30081 .55826 .51468 .27254 .18350 7279 .47572 .25837 .54311 .47745 .24146 .15008

1881 -- -- -- -- -- -- 7283 .40095 .26583 .66298 .52922 .28690 .17991

1887 .42138 .27321 .64838 .52303 .28854 .17643 7604 -- -- -- -- -- --

1939 .55367 .32683 .59030 .48895 .26710 .16364 7605 .47222 .22974 .48651 .34637 .05903 -.00356

1950 .58522 .30688 .52438 .40031 .18967 .04248 7609 .36433 .24054 .66023 .53880 .30701 .19827

1956 .40774 .24290 .59573 .49495 .29175 .20059 7610 .47811 .29965 .62673 .52809 .30710 .19154

1961 .45833 .24730 .53956 .33110 .09250 .04765 7638 .51431 .28580 .55570 .45590 .22239 .12545

1963 .54514 .32704 .59992 .51540 .29016 .18175 7649 .57354 .32426 .56536 .43938 .22681 .13852

1982 .40532 .20812 .51348 .48666 .22656 .15094 7651 .68670 .38608 .56223 .46337 .21276 .13507

2030 .47121 .27093 .57496 .48899 .25911 .14226 7735 .59715 .34799 .58275 .47375 .24777 .14341

2139 .48242 .27371 .56738 .46043 .22286 .08579 7736 .73555 .41264 .56100 .46549 .23786 .14538

2203 .60023 .33595 .55969 .50958 .28474 .19838 7738 .60639 .34298 .56561 .39548 .16158 .08554

2207 .56497 .30873 .54646 .45458 .22926 .14313 8072 .37865 .21675 .57242 .45089 .23727 .14929

2510 .47560 .26523 .55768 .47484 .24974 .15005 8078 .29268 .17103 .58435 .49472 .31627 .22362

2625 .41206 .26195 .63572 .55758 .34173 .23449 8084 .29333 .15184 .51762 .45492 .27665 .18238

2665 .44451 .24225 .54497 .44006 .22346 .13149 8085 .40066 .21390 .53387 .44642 .23305 .12840

2694 .65959 .34420 .52184 .38832 .23440 .17143 8187 .51672 .30935 .59868 .48275 .26131 .14714

2700 .37581 .19742 .52532 .48478 .26306 .15510 8358 .35170 .20065 .57053 .53319 .34814 .24518

3145 .37930 .22937 .60471 .51484 .29679 .19504 8501 .47125 .27380 .58101 .46840 .24973 .15208

3242 .64294 .32993 .51315 .32953 .08405 .10828 8518 .36704 .20989 .57185 .47628 .26067 .15780

3288 .50000 .28396 .56791 .45616 .23539 .11904 8596 .52360 .28923 .55239 .49565 .24427 .14910

3374 .32690 .19388 .59306 .47695 .25128 .15328 8788 .56223 .29439 .52362 .39314 .19556 .11616

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 .43008 .27946 .64978 .53619 .28044 .14087 9148 -- -- -- -- -- --

4030 .54397 .28920 .53165 .43447 .17391 .11106 9153 .56028 .35937 .64141 .52118 .27485 .15967

4089 .47605 .28699 .60286 .52459 .29856 .18589 9156 .51162 .29162 .56999 .47743 .24832 .14560

4112 .51917 .29569 .56955 .52118 .30413 .21430 9193 .45522 .24460 .53733 .51526 .29144 .20901

4306 .37638 .22735 .60405 .46542 .22312 .12676 9265 .51781 .31603 .61032 .57846 .36834 .25132

4850 .46980 .27567 .58678 .49027 .27494 .17080 9569 .50233 .27231 .54209 .49174 .24225 .15421

4856 .40442 .24594 .60813 .47902 .23782 .13150 9686 .34350 .19198 .55890 .46098 .25310 .15445
Appendix 2 111

Appendix 2–2.7. L-moments of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available] 

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0199 0.51637 0.28322 0.54848 0.44347 0.22401 0.12006 4860 0.57532 0.38163 0.66333 0.55914 0.32352 0.19940

0205 .44953 .28095 .62498 .52130 .31441 .21191 4862 .68724 .37837 .55057 .44603 .18716 .09068

0208 .39678 .22120 .55748 .45949 .24309 .15425 5370 .59921 .35505 .59253 .51479 .31030 .21606

0404 .86250 .44822 .51968 .41095 .22231 .15319 5651 .39402 .23217 .58925 .50025 .29932 .20410

0407 .69691 .35957 .51595 .37848 .14023 .08167 5866 1.0570 .66551 .62964 .51675 .27931 .15120

0600 .48986 .28995 .59190 .51429 .30077 .20187 6138 .57727 .35046 .60709 .49970 .28494 .18418

0606 .59081 .27009 .45715 .23216 .02114 -.00019 6275 .60539 .36048 .59545 .49961 .27930 .17618

0646 .57174 .34049 .59554 .48757 .26764 .16815 6435 .46486 .26940 .57952 .48808 .27491 .17519

1120 .84238 .48314 .57354 .46943 .26129 .16714 6492 .33392 .19407 .58118 .51530 .35274 .27281

1440 .59266 .31911 .53844 .44152 .20678 .11473 6619 .59054 .32489 .55015 .41644 .19577 .10946

1446 .57656 .34223 .59356 .46952 .24844 .16085 6659 .62953 .38740 .61538 .52188 .30662 .20672

1469 .55474 .33468 .60330 .52005 .31288 .21048 6797 .45697 .26485 .57958 .48413 .26555 .14899

1475 .48220 .34273 .71077 .59046 .32169 .17443 6951 .48809 .29401 .60237 .48143 .26632 .15963

1480 -- -- -- -- -- -- 7094 .48966 .26956 .55050 .44557 .23056 .13414

1515 .46545 .25970 .55796 .45505 .24302 .14757 7254 .49019 .28271 .57674 .49733 .26936 .15715

1807 .36250 .19708 .54367 .37553 .16691 .12475 7277 -- -- -- -- -- --

1840 .61698 .34575 .56039 .50160 .27606 .19763 7279 .57823 .32349 .55945 .47321 .23874 .14771

1881 -- -- -- -- -- -- 7283 .50285 .33411 .66442 .53204 .29415 .19021

1887 .50382 .32725 .64955 .51495 .27139 .15492 7604 -- -- -- -- -- --

1939 .64438 .38527 .59789 .48841 .26204 .15778 7605 .56667 .31524 .55630 .45340 .14594 .02852

1950 .64095 .36924 .57608 .52204 .40162 .33736 7609 .42092 .27910 .66307 .53665 .30234 .19375

1956 .48615 .31003 .63772 .58312 .43076 .36472 7610 .54104 .34061 .62954 .52401 .29781 .18082

1961 .57292 .32534 .56787 .39676 .21267 .20126 7638 .60413 .34302 .56779 .45796 .21937 .12100

1963 .64456 .38644 .59955 .50441 .27880 .17567 7649 .70352 .40676 .57817 .45336 .23815 .14277

1982 .47383 .25105 .52984 .47827 .22484 .14791 7651 .83976 .48832 .58151 .49170 .26788 .18717

2030 .54922 .31872 .58031 .47853 .24097 .12855 7735 .71218 .42787 .60079 .48248 .24853 .14231

2139 .55208 .30973 .56103 .45649 .19042 .03877 7736 .90167 .51476 .57090 .46921 .24355 .14389

2203 .67039 .38474 .57391 .52355 .30140 .20327 7738 .71967 .42797 .59467 .47291 .28616 .23177

2207 .65084 .35795 .54998 .45531 .23274 .14535 8072 .46279 .26653 .57592 .44566 .23524 .14721

2510 .54465 .30790 .56531 .47101 .24492 .14524 8078 .34738 .20853 .60028 .49986 .32397 .24932

2625 .48396 .31016 .64088 .55874 .34713 .24222 8084 .34341 .18043 .52539 .43417 .22752 .13915

2665 .52487 .29184 .55602 .44819 .23329 .14011 8085 .47482 .25763 .54259 .45320 .24533 .14447

2694 .81610 .44192 .54150 .40314 .21426 .11926 8187 .57996 .34161 .58902 .45896 .22882 .11136

2700 .45863 .24860 .54205 .48351 .26337 .15592 8358 .38041 .22723 .59733 .55389 .35556 .24436

3145 .41309 .25071 .60691 .51960 .30587 .20117 8501 .56158 .33022 .58803 .46317 .23943 .14905

3242 .72867 .38324 .52594 .31526 .00252 -.03547 8518 .43454 .25022 .57581 .47677 .25959 .15569

3288 .62162 .36344 .58467 .49039 .27637 .16418 8596 .60317 .33585 .55681 .47910 .23592 .14611

3374 .38339 .23180 .60462 .48989 .26875 .17168 8788 .66864 .35841 .53602 .43481 .25321 .17396

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 .49401 .32300 .65384 .53854 .28209 .14095 9148 -- -- -- -- -- --

4030 .60673 .32688 .53875 .43532 .18761 .12702 9153 .64032 .42868 .66948 .56296 .30385 .14870

4089 .55484 .34279 .61782 .53520 .30719 .19241 9156 .59139 .34198 .57825 .47032 .23434 .12814

4112 .58528 .33627 .57453 .50951 .29120 .19779 9193 .54430 .29229 .53700 .48540 .27553 .20594

4306 .44681 .26796 .59971 .43374 .18294 .10128 9265 .57344 .35086 .61184 .55979 .34030 .22823

4850 .56915 .33824 .59429 .49191 .27688 .17317 9569 .58848 .32331 .54939 .47264 .22364 .13170

4856 .49296 .31609 .64121 .51813 .25998 .12013 9686 .39115 .22053 .56379 .46047 .25330 .15918
112 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–3.1. L-moments of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available]

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0199 4.2399 2.2599 0.53300 0.49501 0.21234 0.13068 4860 4.7234 2.4810 0.52525 0.48606 0.27420 0.23968

0205 4.5853 2.2825 .49778 .45864 .23441 .15459 4862 2.8888 1.4677 .50807 .60066 .28832 .14136

0208 4.3734 1.9912 .45530 .45909 .27928 .18008 5370 3.7980 1.9821 .52187 .52613 .26512 .18638

0404 3.6690 2.0990 .57209 .62373 .32958 .18539 5651 4.4463 2.2420 .50425 .44673 .19110 .11704

0407 3.0122 1.5999 .53113 .62400 .30326 .12910 5866 6.5455 3.2888 .50245 .43531 .24877 .17996

0600 3.6693 1.8897 .51499 .52201 .25557 .17516 6138 5.5700 2.7858 .50015 .43206 .21449 .12776

0606 3.6585 2.1108 .57695 .60757 .25200 .04354 6275 4.6605 2.4745 .53096 .48351 .22586 .14554

0646 4.9242 2.6175 .53155 .45758 .18942 .12167 6435 3.9833 2.0510 .51490 .49064 .22412 .14862

1120 4.6842 2.5570 .54588 .50455 .24230 .16372 6492 4.1570 2.2512 .54154 .50980 .20953 .11105

1440 3.2251 1.7060 .52897 .58951 .28617 .15462 6619 4.0891 2.1235 .51931 .50402 .25144 .17005

1446 4.6488 2.2850 .49153 .46265 .25641 .17276 6659 4.4046 2.3208 .52690 .49726 .25121 .18096

1469 3.8573 2.0881 .54134 .55617 .28884 .19835 6797 5.6218 2.7412 .48760 .38706 .17653 .11792

1475 3.6765 1.9267 .52406 .46985 .09732 .00765 6951 4.7815 2.4753 .51768 .44926 .20011 .14132

1480 -- -- -- -- -- -- 7094 4.1245 2.1486 .52092 .48604 .21140 .13116

1515 3.8710 1.9247 .49722 .46925 .20945 .13716 7254 3.8447 2.0818 .54147 .54737 .25714 .14283

1807 4.5696 2.0791 .45498 .36991 .14760 .08129 7277 -- -- -- -- -- --

1840 2.8252 1.4395 .50953 .62789 .33603 .19324 7279 3.1973 1.6792 .52520 .58889 .29185 .16693

1881 4.2000 2.1000 .50000 .42857 .28571 .09524 7283 4.3633 2.2659 .51932 .48824 .23802 .15464

1887 4.6101 2.3444 .50854 .46122 .22591 .15223 7604 -- -- -- -- -- --

1939 4.2518 2.2040 .51837 .48653 .23378 .16206 7605 2.5484 1.1204 .43966 .48269 .11959 .02272

1950 5.4375 2.7923 .51353 .48592 .23974 .06775 7609 4.7263 2.6254 .55550 .54511 .30268 .20166

1956 5.1875 2.6219 .50543 .42672 .20619 .15434 7610 4.1491 2.3300 .56157 .56654 .28947 .18092

1961 6.0698 2.7220 .44846 .25845 .10435 .13440 7638 3.9430 2.0895 .52993 .51798 .23938 .15148

1963 3.7841 1.9760 .52219 .51584 .23700 .15484 7649 4.7938 2.5356 .52893 .47753 .22520 .14349

1982 2.6818 1.3560 .50565 .64239 .32522 .14053 7651 3.5541 1.8751 .52759 .53989 .23740 .13049

2030 3.4349 1.7726 .51606 .53655 .24341 .14212 7735 6.1256 3.0556 .49882 .43491 .23188 .13879

2139 5.8500 2.8535 .48778 .38372 .16763 .09881 7736 4.2896 2.4072 .56118 .54677 .26195 .16438

2203 2.9754 1.5302 .51429 .60658 .31575 .19181 7738 5.8636 3.0192 .51489 .43737 .20810 .12602

2207 4.0185 2.1102 .52513 .51870 .26728 .19314 8072 5.1170 2.5095 .49044 .40293 .17068 .10360

2510 4.1431 2.1964 .53014 .49530 .21140 .13136 8078 4.6399 2.3305 .50227 .42642 .17373 .11190

2625 5.0019 2.5699 .51378 .49348 .28123 .18010 8084 4.0152 1.9942 .49666 .45979 .20822 .13839

2665 5.0194 2.7133 .54057 .48564 .23393 .15785 8085 4.0204 2.1259 .52876 .49138 .18754 .09686

2694 6.3500 3.3308 .52454 .42588 .19256 .10847 8187 4.0880 2.0461 .50052 .47290 .23240 .16175

2700 3.4665 1.8646 .53788 .57080 .26343 .13937 8358 4.6164 2.3721 .51385 .49369 .29992 .24758

3145 4.7568 2.4819 .52176 .49952 .27916 .19032 8501 4.1955 2.1809 .51982 .48746 .22392 .14415

3242 9.0000 3.7011 .41123 .20702 .10669 .04432 8518 4.0859 2.1111 .51668 .48417 .21709 .14490

3288 6.4911 3.2997 .50835 .41754 .18326 .10329 8596 2.8507 1.4434 .50635 .60713 .30018 .15717

3374 5.0788 2.4228 .47705 .41337 .20088 .12119 8788 6.4243 3.4036 .52981 .44174 .21841 .14426

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 3.7889 1.8240 .48140 .43690 .17879 .12742 9148 8.2500 3.3929 .41126 .04211 .08421 .18947

4030 2.5829 1.2559 .48623 .62619 .31508 .14869 9153 4.0909 2.3421 .57252 .55869 .23327 .12498

4089 4.1688 2.2414 .53766 .51998 .24985 .16349 9156 3.8306 2.0346 .53114 .52950 .24907 .15999

4112 3.4043 1.8476 .54273 .59447 .29486 .16323 9193 2.8889 1.4827 .51324 .60949 .29151 .13440

4306 4.8110 2.2994 .47795 .41622 .20487 .13591 9265 2.8834 1.4752 .51163 .61338 .30745 .15743

4850 4.1325 2.1808 .52771 .50920 .24569 .16078 9569 2.7189 1.3311 .48960 .59491 .27883 .13093

4856 4.8824 2.5671 .52580 .43423 .14798 .08075 9686 3.8992 2.0326 .52129 .50402 .22124 .12718
Appendix 2 113

Appendix 2–3.2. L-moments of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available]

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0199 5.0196 2.8192 0.56164 0.50694 0.23158 0.14883 4860 5.0438 2.7423 0.54369 0.50814 0.29797 0.25463

0205 5.0593 2.6321 .52026 .47074 .23615 .14992 4862 3.3820 1.8321 .54172 .58722 .27069 .12525

0208 4.8447 2.2871 .47208 .45498 .26281 .16319 5370 4.3592 2.3898 .54822 .53302 .27161 .18455

0404 4.7315 2.8855 .60984 .60457 .30969 .17464 5651 5.0357 2.7801 .55207 .51746 .26719 .16776

0407 3.8031 2.2159 .58267 .62249 .31353 .15531 5866 7.1912 3.8185 .53100 .45862 .25578 .18488

0600 4.1059 2.2128 .53893 .53092 .26404 .17541 6138 6.4241 3.3477 .52111 .44356 .21864 .12831

0606 3.9000 2.2968 .58893 .59845 .22830 .00782 6275 5.3776 2.9650 .55136 .48833 .23219 .15039

0646 5.6824 3.1042 .54629 .44959 .18273 .12286 6435 4.5102 2.4380 .54056 .50215 .23334 .15092

1120 5.5381 3.1409 .56715 .50187 .23809 .15800 6492 4.9038 2.7799 .56688 .51230 .21839 .12319

1440 3.8009 2.1250 .55907 .57551 .26742 .13732 6619 4.4346 2.4012 .54147 .52123 .26246 .16543

1446 5.1159 2.6559 .51914 .49302 .28115 .18811 6659 4.9959 2.7531 .55107 .51266 .26860 .19142

1469 4.3060 2.4279 .56385 .56246 .29377 .19530 6797 6.2607 3.1548 .50391 .39546 .17946 .11933

1475 3.6765 1.9267 .52406 .46985 .09732 .00765 6951 5.3867 2.8617 .53125 .45041 .20809 .15408

1480 -- -- -- -- -- -- 7094 4.7721 2.5899 .54272 .48714 .21305 .12821

1515 4.3907 2.3158 .52743 .49061 .22769 .14372 7254 4.2984 2.4048 .55947 .54356 .25185 .13536

1807 4.7115 2.1717 .46093 .38309 .16342 .09105 7277 -- -- -- -- -- --

1840 3.3461 1.8707 .55907 .64305 .35489 .20279 7279 3.7470 2.0873 .55706 .58305 .28568 .16030

1881 -- -- -- -- -- -- 7283 4.9413 2.6700 .54035 .49842 .25207 .16812

1887 5.1704 2.7414 .53021 .47445 .23534 .15463 7604 -- -- -- -- -- --

1939 4.7941 2.5970 .54170 .49914 .24588 .16719 7605 2.8333 1.3644 .48154 .53713 .21223 .11390

1950 6.2000 3.2230 .51984 .49307 .22939 .04957 7609 5.3336 3.0409 .57014 .54138 .29700 .19492

1956 5.9333 3.1394 .52911 .46979 .30173 .29566 7610 4.8326 2.8078 .58100 .55683 .28037 .17478

1961 6.6585 3.4695 .52106 .43420 .28154 .26281 7638 4.5121 2.5037 .55488 .52547 .24894 .15597

1963 4.3603 2.4033 .55117 .52831 .25350 .16647 7649 5.6831 3.1343 .55151 .48022 .22681 .14439

1982 3.1630 1.7251 .54541 .62912 .31154 .13762 7651 4.4269 2.5216 .56962 .55295 .26696 .16405

2030 3.8265 2.0683 .54051 .54598 .25786 .15472 7735 6.8663 3.5440 .51614 .44123 .22664 .12964

2139 6.2845 3.1442 .50030 .38080 .14993 .08089 7736 5.1659 3.0005 .58084 .52866 .24199 .14794

2203 3.6190 1.9996 .55252 .59210 .30386 .18747 7738 6.7405 3.5052 .52002 .41504 .18519 .11905

2207 4.4678 2.4457 .54739 .52666 .26963 .18633 8072 5.8309 3.0106 .51632 .42360 .18808 .12141

2510 4.7507 2.6536 .55857 .51505 .23790 .15191 8078 5.1837 2.6955 .52000 .43439 .17877 .11197

2625 5.6314 3.0492 .54146 .50927 .28119 .16781 8084 4.5238 2.3262 .51420 .44351 .16852 .08321

2665 5.6342 3.1068 .55141 .47926 .22809 .15427 8085 4.7961 2.6438 .55124 .48176 .18147 .09653

2694 8.2644 4.4857 .54277 .42676 .20552 .13177 8187 4.5954 2.4604 .53540 .50019 .24388 .15166

2700 3.9864 2.2547 .56559 .57108 .26596 .14172 8358 5.1000 2.7389 .53704 .50303 .29038 .22438

3145 5.4952 3.0134 .54837 .50979 .28162 .18869 8501 4.8417 2.6224 .54163 .49072 .22726 .14157

3242 9.5556 3.9601 .41443 .17266 .05863 .02664 8518 4.6351 2.4902 .53726 .48434 .21218 .13379

3288 7.3924 3.7247 .50385 .38518 .15714 .09637 8596 3.3220 1.8252 .54942 .62199 .32645 .18471

3374 5.7796 2.9032 .50231 .43081 .21067 .12652 8788 7.2833 3.9967 .54874 .44969 .21770 .13959

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 4.1437 2.1090 .50898 .47122 .21893 .15997 9148 10.429 5.3333 .51142 .26786 .21429 .26786

4030 2.9832 1.5442 .51763 .59299 .25665 .08163 9153 4.2137 2.4120 .57241 .54655 .22051 .11942

4089 4.9419 2.7925 .56505 .52102 .24658 .15331 9156 4.2697 2.3548 .55152 .53305 .25321 .16084

4112 3.9062 2.2357 .57233 .59634 .29728 .16400 9193 3.5261 1.9379 .54957 .57959 .25574 .11144

4306 5.1448 2.5251 .49081 .42481 .21114 .14119 9265 3.4316 1.9186 .55909 .62594 .32722 .17444

4850 4.6843 2.5878 .55244 .52001 .25375 .15825 9569 3.1265 1.6314 .52179 .58385 .26689 .12301

4856 5.4383 2.9302 .53882 .43355 .14810 .08126 9686 4.3881 2.3872 .54402 .51106 .22813 .12931
114 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–3.3. L-moments of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available]

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0199 6.2453 3.7041 0.59310 0.51815 0.24551 0.15786 4860 6.0547 3.5402 0.58470 0.55459 0.35335 0.29728

0205 5.9004 3.2773 .55544 .50016 .25789 .16005 4862 4.4965 2.6627 .59216 .58039 .27267 .13920

0208 6.1217 3.2079 .52402 .48244 .25858 .14144 5370 5.5541 3.2810 .59073 .55292 .29549 .19740

0404 6.4803 3.9630 .61155 .51752 .20935 .11728 5651 6.0255 3.5116 .58279 .54116 .30062 .20097

0407 5.6156 3.5245 .62762 .57815 .25957 .11498 5866 8.7742 4.8505 .55282 .44387 .22626 .16006

0600 5.2092 3.0191 .57956 .53793 .26527 .16424 6138 7.9759 4.5159 .56619 .48559 .25371 .15796

0606 5.2329 3.5567 .67968 .69735 .39452 .18028 6275 6.6988 3.8770 .57877 .49820 .24102 .14723

0646 6.4865 3.7808 .58287 .49519 .22815 .14937 6435 5.7210 3.3261 .58138 .51602 .23927 .14224

1120 7.2939 4.3787 .60032 .50921 .24077 .14664 6492 6.0781 3.6155 .59484 .50008 .18440 .07841

1440 5.0410 3.0334 .60175 .56603 .26226 .13981 6619 4.9847 2.8104 .56380 .53047 .27014 .17063

1446 6.2500 3.5986 .57577 .54600 .32035 .20663 6659 5.9350 3.4583 .58269 .53423 .28817 .19590

1469 5.3089 3.1689 .59690 .56722 .29929 .19233 6797 7.5537 4.1918 .55494 .46464 .23617 .14596

1475 5.0968 3.2057 .62897 .62026 .34597 .25664 6951 6.1189 3.3886 .55379 .46378 .21351 .14500

1480 -- -- -- -- -- -- 7094 6.0412 3.4748 .57519 .49437 .21966 .12789

1515 5.4976 3.1401 .57117 .51455 .24348 .13869 7254 5.4406 3.2389 .59532 .54256 .24663 .12764

1807 5.2733 2.6595 .50432 .43810 .19835 .09929 7277 -- -- -- -- -- --

1840 4.3662 2.6121 .59825 .60278 .29308 .13779 7279 4.7771 2.8750 .60183 .58561 .28540 .14842

1881 -- -- -- -- -- -- 7283 6.1752 3.5771 .57927 .52521 .28194 .18952

1887 6.1074 3.4224 .56036 .49367 .24575 .14993 7604 -- -- -- -- -- --

1939 5.9380 3.4228 .57642 .51906 .26802 .17744 7605 4.8462 2.8738 .59302 .55969 .24710 .09428

1950 7.9259 4.5812 .57800 .51592 .23296 .06932 7609 6.4282 3.8487 .59873 .54648 .29082 .17979

1956 6.3182 3.5328 .55914 .51385 .33245 .29484 7610 6.0459 3.6513 .60392 .54693 .27381 .17177

1961 7.5641 4.0256 .53220 .44969 .28656 .21835 7638 5.5610 3.2740 .58874 .53530 .25687 .15172

1963 5.4270 3.1838 .58665 .53875 .26798 .17614 7649 7.1740 4.2285 .58942 .50289 .23993 .14023

1982 4.3554 2.6651 .61190 .62506 .30784 .13407 7651 5.9495 3.6780 .61820 .56008 .25956 .13078

2030 4.6447 2.7017 .58167 .56215 .27297 .15570 7735 8.4873 4.6904 .55264 .45710 .21793 .11226

2139 7.7264 4.0817 .52827 .38630 .14149 .06821 7736 6.8587 4.1872 .61049 .51965 .23026 .13523

2203 4.9855 3.0223 .60621 .58668 .29930 .18007 7738 8.3452 4.8283 .57857 .49777 .26719 .17774

2207 5.5963 3.3546 .59944 .57238 .32213 .21931 8072 7.3761 4.0775 .55279 .44983 .20584 .12450

2510 5.9440 3.5224 .59260 .52534 .24653 .14727 8078 6.3242 3.4932 .55236 .45314 .18433 .09406

2625 6.6391 3.8341 .57750 .53020 .28226 .15416 8084 4.5238 2.3262 .51420 .44351 .16852 .08321

2665 6.8693 3.9984 .58207 .49327 .23040 .13876 8085 6.2198 3.6329 .58409 .48779 .19719 .11545

2694 10.413 5.8287 .55975 .41475 .17025 .09022 8187 5.3355 3.1598 .59221 .57552 .32493 .20652

2700 5.1310 3.0950 .60321 .56472 .26253 .14097 8358 5.7761 3.2845 .56863 .51667 .27177 .17328

3145 6.4755 3.7821 .58406 .53705 .29909 .19232 8501 5.7039 3.2506 .56990 .50340 .23405 .13656

3242 9.5556 3.9601 .41443 .17266 .05863 .02664 8518 5.7319 3.2883 .57369 .50406 .23323 .14428

3288 9.3028 5.3468 .57475 .48313 .24046 .13723 8596 4.3201 2.5924 .60009 .61536 .31902 .17442

3374 6.8387 3.6649 .53590 .45677 .22430 .12990 8788 8.4918 4.8225 .56791 .45049 .19973 .10949

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 4.8102 2.6874 .55868 .52765 .26696 .17078 9148 10.429 5.3333 .51142 .26786 .21429 .26786

4030 3.6982 2.0988 .56750 .59230 .25574 .07819 9153 5.8898 3.6899 .62649 .57565 .29274 .20836

4089 6.3156 3.8479 .60928 .54843 .27700 .17455 9156 5.1798 3.0511 .58904 .54984 .26884 .16234

4112 5.1060 3.1219 .61143 .58443 .28756 .16214 9193 4.7718 2.8595 .59926 .56798 .24700 .10863

4306 6.0583 3.2246 .53226 .46777 .24085 .14941 9265 4.3187 2.6182 .60624 .62803 .33338 .18311

4850 5.9779 3.4697 .58041 .51308 .24168 .13702 9569 3.9644 2.2645 .57121 .57876 .26112 .11926

4856 6.5132 3.6926 .56693 .45590 .17428 .09565 9686 5.5547 3.2069 .57733 .51393 .23276 .13085
Appendix 2 115

Appendix 2–3.4. L-moments of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available]

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0199 8.1553 5.0570 0.62008 0.51897 0.24381 0.15234 4860 8.7522 5.6490 0.64544 0.58324 0.34167 0.22608

0205 7.1991 4.2781 .59426 .52434 .26640 .15153 4862 7.1100 4.6658 .65623 .58008 .26169 .11115

0208 7.5619 4.2547 .56265 .49418 .24090 .10991 5370 7.1075 4.4205 .62194 .55218 .28150 .17047

0404 9.2921 5.6325 .60616 .44727 .14829 .09466 5651 7.4218 4.5366 .61125 .54084 .28167 .17305

0407 9.5000 6.2171 .65443 .51866 .18309 .05827 5866 11.062 6.7601 .61111 .52660 .30467 .21013

0600 6.8227 4.1878 .61381 .53145 .23990 .12545 6138 10.329 6.0967 .59026 .47299 .21297 .11346

0606 5.8169 3.9320 .67596 .65135 .32178 .11534 6275 9.6143 5.7777 .60095 .47294 .19839 .10748

0646 8.5148 5.2872 .62094 .51197 .22642 .11821 6435 7.5020 4.6013 .61335 .51559 .22650 .11921

1120 10.372 6.4649 .62333 .49093 .20863 .11705 6492 7.8814 4.8962 .62124 .49273 .16227 .04210

1440 7.3033 4.6306 .63405 .54091 .23586 .12430 6619 6.3443 3.9251 .61868 .58153 .32705 .20864

1446 7.6592 4.6558 .60788 .55290 .30419 .17374 6659 7.6253 4.7268 .61989 .54831 .29013 .18226

1469 6.8474 4.2566 .62164 .54957 .26588 .14839 6797 9.4392 5.4770 .58024 .45967 .20129 .10277

1475 7.0364 4.8283 .68619 .65485 .39265 .27628 6951 7.5721 4.4903 .59302 .50140 .24853 .16097

1480 -- -- -- -- -- -- 7094 8.3765 5.0342 .60099 .47516 .18634 .09421

1515 7.5555 4.6223 .61177 .52283 .24433 .13262 7254 7.2850 4.5332 .62227 .52788 .22860 .11598

1807 6.6500 3.6697 .55184 .45938 .19307 .08341 7277 -- -- -- -- -- --

1840 5.5382 3.5022 .63237 .59403 .28017 .12842 7279 6.7007 4.2955 .64105 .56883 .25621 .11370

1881 -- -- -- -- -- -- 7283 8.6512 5.3767 .62149 .52535 .25022 .13606

1887 7.9065 4.7235 .59741 .50435 .23729 .12844 7604 -- -- -- -- -- --

1939 7.6745 4.6710 .60864 .52425 .25921 .15337 7605 7.6087 4.9209 .64675 .54378 .21136 .06569

1950 7.9259 4.5812 .57800 .51592 .23296 .06932 7609 8.3777 5.2061 .62142 .52602 .24454 .12401

1956 8.4500 4.9590 .58686 .50312 .27304 .17318 7610 8.1054 5.1239 .63216 .53918 .25819 .15340

1961 10.114 5.5361 .54736 .39813 .15732 .04779 7638 7.7208 4.8624 .62979 .53699 .24309 .12273

1963 7.5526 4.7183 .62472 .53718 .25473 .14617 7649 9.9059 6.0361 .60934 .47988 .20046 .10612

1982 6.4001 4.1242 .64438 .56862 .23104 .07587 7651 9.2469 6.0038 .64928 .52947 .21774 .10029

2030 6.2929 3.9712 .63105 .57599 .28273 .14979 7735 11.677 7.0095 .60031 .48175 .22243 .12024

2139 10.358 6.1445 .59321 .46444 .19910 .10001 7736 9.8677 6.1396 .62219 .48307 .19168 .10900

2203 7.1344 4.5113 .63233 .54319 .23743 .11898 7738 12.380 7.5770 .61202 .50390 .26841 .18342

2207 8.0130 5.0955 .63591 .54993 .26334 .13455 8072 9.8034 5.6693 .57830 .43739 .17424 .09846

2510 8.1960 5.1523 .62863 .52567 .23472 .12444 8078 8.6159 5.1956 .60303 .48452 .19936 .09972

2625 7.7936 4.6466 .59621 .52500 .26295 .13698 8084 6.5439 4.1648 .63644 .61285 .36895 .23466

2665 9.0656 5.4390 .59996 .47596 .20174 .11056 8085 8.5755 5.2129 .60789 .47064 .17056 .08584

2694 13.745 7.6895 .55946 .36507 .10492 .05551 8187 6.4662 4.0809 .63112 .59618 .33502 .19939

2700 7.2402 4.6562 .64311 .55777 .24898 .12173 8358 7.4032 4.4588 .60227 .50977 .21722 .07257

3145 7.7836 4.7648 .61217 .54425 .28763 .16564 8501 7.5760 4.5990 .60705 .51065 .22735 .11575

3242 18.000 9.6263 .53480 .39512 .12981 .01554 8518 7.9167 4.8533 .61305 .51159 .22871 .12292

3288 11.531 6.8884 .59740 .46652 .18346 .06401 8596 5.9633 3.7756 .63314 .57863 .26688 .12435

3374 9.2432 5.2879 .57209 .45102 .18488 .08376 8788 11.915 7.1276 .59821 .43921 .15669 .06947

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 5.6144 3.3255 .59232 .55242 .28749 .17058 9148 14.333 7.6000 .53023 .47807 .58333 .10965

4030 5.7566 3.5953 .62455 .56068 .23026 .08526 9153 8.2430 5.3643 .65077 .55033 .25138 .14362

4089 8.4131 5.3761 .63901 .54513 .26096 .14678 9156 6.8531 4.2674 .62270 .54453 .25191 .13259

4112 6.8883 4.4611 .64763 .57827 .27515 .14288 9193 6.7246 4.1927 .62348 .52447 .19808 .07935

4306 8.0155 4.8524 .60537 .53681 .28581 .16400 9265 6.1628 4.0050 .64987 .60512 .30293 .15936

4850 8.0746 5.0086 .62030 .51974 .23024 .11314 9569 5.2585 3.2419 .61650 .57858 .26673 .12767

4856 8.8315 5.4417 .61617 .50330 .23024 .14547 9686 7.0410 4.3030 .61114 .52418 .23683 .12642
116 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–3.5. L-moments of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available]

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0199 10.866 6.7955 0.62541 0.48661 0.20308 0.11432 4860 13.474 8.5973 0.63805 0.51295 0.26042 0.17616

0205 9.2472 5.7064 .61710 .51668 .24531 .12998 4862 11.462 7.5508 .65878 .51357 .20001 .10107

0208 11.313 6.8793 .60809 .49749 .22701 .11384 5370 9.4466 6.0673 .64227 .53909 .26068 .15315

0404 13.773 8.4079 .61047 .43305 .16910 .13240 5651 8.3944 5.1525 .61381 .51849 .24089 .12280

0407 15.668 9.8699 .62995 .42491 .11058 .05793 5866 18.615 10.840 .58233 .45160 .26131 .18824

0600 8.7231 5.5560 .63693 .52804 .23212 .12040 6138 14.766 8.9406 .60549 .46068 .20459 .12485

0606 11.390 7.9351 .69669 .55680 .19772 .03314 6275 14.482 8.9773 .61990 .46073 .18947 .11330

0646 12.205 7.6049 .62309 .45695 .15412 .06479 6435 10.029 6.3531 .63346 .50990 .22353 .12566

1120 15.718 9.8582 .62719 .46306 .19409 .12641 6492 11.094 6.9092 .62276 .44818 .12699 .04858

1440 11.591 7.5016 .64721 .50353 .20531 .11271 6619 10.047 6.6422 .66114 .56529 .28695 .16575

1446 9.4462 5.9144 .62611 .53054 .24950 .10973 6659 9.8305 6.2036 .63106 .52313 .25070 .14401

1469 8.9175 5.7027 .63949 .53097 .23573 .11970 6797 13.773 8.1148 .58919 .43679 .18596 .11334

1475 8.1698 5.6785 .69506 .63285 .34250 .19668 6951 9.4093 5.8092 .61739 .51374 .25641 .15619

1480 -- -- -- -- -- -- 7094 11.283 6.8898 .61064 .45437 .16794 .08969

1515 10.773 6.7909 .63034 .50152 .21715 .11658 7254 9.9636 6.3424 .63655 .50157 .19649 .09402

1807 8.3030 5.0317 .60601 .51407 .23601 .10675 7277 -- -- -- -- -- --

1840 8.9957 5.9896 .66583 .55525 .23365 .09805 7279 10.018 6.5490 .65375 .52078 .20137 .08507

1881 -- -- -- -- -- -- 7283 15.455 9.9405 .64317 .49013 .20344 .10389

1887 11.721 7.2176 .61580 .47522 .19486 .09894 7604 -- -- -- -- -- --

1939 10.340 6.5145 .63004 .51293 .23519 .12750 7605 12.100 7.7895 .64376 .42950 .02186 -.11256

1950 8.9231 5.0369 .56448 .44914 .15583 .02405 7609 11.654 7.3941 .63450 .49697 .20455 .09931

1956 9.9474 6.0071 .60389 .50770 .25852 .12957 7610 10.955 7.0788 .64619 .51531 .22124 .11827

1961 10.114 5.5361 .54736 .39813 .15732 .04779 7638 11.653 7.3685 .63231 .47844 .17691 .08371

1963 10.386 6.7029 .64535 .52347 .23440 .12967 7649 15.042 9.2187 .61287 .44630 .17980 .11640

1982 9.2449 6.0980 .65961 .52929 .19287 .06908 7651 14.518 9.4796 .65295 .48697 .18169 .09455

2030 9.1950 5.9951 .65199 .53787 .22888 .10494 7735 17.069 10.417 .61031 .45635 .20154 .12867

2139 15.146 9.5143 .62816 .49070 .22995 .14073 7736 15.019 9.2755 .61759 .43992 .16563 .11084

2203 9.2780 6.0029 .64700 .52925 .22864 .12436 7738 17.121 10.543 .61581 .48893 .27012 .20949

2207 11.135 7.0263 .63101 .48092 .17683 .08277 8072 13.892 8.2441 .59345 .43092 .17402 .10882

2510 11.590 7.3435 .63359 .48145 .17929 .08248 8078 11.360 6.8522 .60318 .43701 .14670 .07692

2625 9.6626 5.8329 .60366 .49483 .21818 .10311 8084 8.5472 5.4318 .63551 .52259 .20999 .06991

2665 12.445 7.5424 .60606 .44745 .17239 .09592 8085 12.283 7.4299 .60489 .42636 .14018 .08431

2694 24.143 13.120 .54342 .38000 .21847 .17830 8187 11.635 7.5615 .64987 .52203 .22649 .10980

2700 11.476 7.4934 .65299 .50704 .19799 .10037 8358 8.3333 5.2232 .62678 .54360 .26353 .11280

3145 9.4253 5.8952 .62546 .52637 .25228 .13072 8501 11.107 7.0180 .63186 .49701 .20755 .10499

3242 19.895 11.877 .59700 .51499 .25982 .09821 8518 11.045 6.9058 .62523 .48037 .18743 .09404

3288 15.687 9.4386 .60168 .45674 .21254 .14699 8596 8.2098 5.3560 .65239 .54806 .23051 .10018

3374 12.135 7.2346 .59619 .45865 .18965 .09485 8788 17.130 9.9279 .57956 .38482 .13424 .09244

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 7.5980 4.7102 .61993 .53196 .24560 .11925 9148 21.200 15.600 .73585 .78205 .93590 .78205

4030 6.7551 4.3114 .63825 .54878 .21531 .07347 9153 10.622 7.2606 .68351 .57982 .29181 .17257

4089 11.479 7.4924 .65272 .52805 .24462 .14362 9156 9.6177 6.1818 .64275 .52162 .22072 .10658

4112 9.0336 6.0731 .67227 .57607 .27355 .14359 9193 9.3772 6.1879 .65988 .54054 .22523 .10786

4306 11.209 6.9376 .61895 .49644 .22385 .11771 9265 8.5983 5.6972 .66259 .55619 .23467 .09929

4850 12.914 8.2722 .64058 .48967 .19746 .10844 9569 8.1648 5.2712 .64560 .53383 .21237 .08886

4856 12.012 7.6667 .63825 .51080 .24706 .16671 9686 9.2713 5.8609 .63215 .51403 .21978 .11125
Appendix 2 117

Appendix 2–3.6. L-moments of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available] 

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0199 19.501 12.839 0.65839 0.49814 0.21533 0.11872 4860 25.727 17.816 0.69250 0.55894 0.30724 0.21277

0205 17.497 11.605 .66324 .51651 .22261 .10076 4862 24.970 16.385 .65621 .46969 .18666 .11911

0208 19.593 12.639 .64506 .50900 .24265 .14265 5370 16.649 11.176 .67128 .51985 .21933 .10249

0404 29.060 19.082 .65665 .48867 .22790 .13938 5651 11.561 7.6099 .65826 .54707 .25947 .12598

0407 35.652 22.413 .62867 .43290 .17845 .11131 5866 39.318 21.614 .54971 .35995 .11653 .03014

0600 15.463 10.239 .66215 .50944 .21081 .10255 6138 29.516 18.660 .63218 .45686 .19105 .11221

0606 24.933 17.198 .68976 .49746 .17167 .07424 6275 29.592 19.173 .64791 .48645 .23789 .16303

0646 21.125 13.877 .65690 .48370 .19406 .10593 6435 17.774 11.944 .67199 .52839 .24604 .13745

1120 33.872 21.832 .64455 .46502 .20385 .12837 6492 19.459 12.478 .64126 .45974 .17867 .11119

1440 23.776 16.122 .67806 .51892 .24085 .14508 6619 18.628 12.776 .68588 .53088 .22248 .09811

1446 15.803 10.667 .67499 .54853 .25518 .11616 6659 17.571 11.445 .65132 .48495 .18379 .07698

1469 15.525 10.339 .66596 .51346 .20993 .09656 6797 27.236 17.481 .64183 .50771 .27267 .17786

1475 11.694 8.2934 .70921 .59137 .26066 .08967 6951 19.461 13.537 .69562 .57772 .31319 .18572

1480 -- -- -- -- -- -- 7094 22.576 14.402 .63795 .45934 .18278 .10316

1515 21.791 14.458 .66349 .50641 .23231 .14403 7254 18.145 12.049 .66406 .49771 .19751 .09700

1807 13.076 8.5022 .65023 .52324 .22758 .09265 7277 -- -- -- -- -- --

1840 18.831 12.935 .68688 .51636 .19152 .07095 7279 21.798 14.705 .67461 .50064 .19847 .10010

1881 -- -- -- -- -- -- 7283 32.511 20.871 .64198 .45046 .17487 .10703

1887 24.446 15.752 .64433 .47476 .19901 .11058 7604 -- -- -- -- -- --

1939 19.001 12.564 .66122 .50579 .21693 .10903 7605 17.056 11.631 .68193 .49536 .14217 .02501

1950 15.043 8.7984 .58487 .36863 .04634 -.03994 7609 21.311 13.917 .65304 .47965 .18642 .09611

1956 21.452 14.716 .68602 .56380 .31365 .20805 7610 18.896 12.375 .65490 .49275 .21414 .13311

1961 17.467 10.455 .59858 .40211 .11980 .04073 7638 22.726 14.638 .64412 .46092 .17948 .10654

1963 19.907 13.110 .65856 .48671 .19138 .09873 7649 32.668 20.759 .63545 .45437 .19835 .12975

1982 19.511 12.873 .65976 .46610 .15138 .07790 7651 32.128 20.970 .65271 .45616 .18120 .12713

2030 18.658 12.463 .66798 .49987 .19888 .10356 7735 30.594 19.598 .64060 .48164 .22942 .14563

2139 31.210 21.116 .67657 .54467 .30793 .21760 7736 32.327 20.790 .64312 .46272 .20529 .13478

2203 18.128 11.922 .65768 .48459 .18708 .10211 7738 24.898 15.612 .62702 .45260 .18696 .10487

2207 20.472 13.728 .67056 .50100 .19818 .09677 8072 26.071 16.135 .61890 .44349 .18580 .10528

2510 22.057 14.461 .65559 .47844 .18940 .10414 8078 19.634 12.596 .64155 .46177 .16669 .07318

2625 17.283 11.384 .65869 .52158 .23358 .11064 8084 12.146 7.3551 .60556 .40528 .07513 -.00858

2665 23.491 14.991 .63818 .46760 .19843 .11702 8085 23.628 14.932 .63195 .44413 .17109 .10106

2694 49.137 27.528 .56023 .36373 .16985 .13587 8187 23.287 16.088 .69088 .53839 .24313 .12365

2700 26.190 17.421 .66516 .48589 .20230 .12352 8358 14.283 9.9129 .69404 .57386 .26837 .10230

3145 16.187 11.188 .69117 .57503 .29359 .15365 8501 22.448 14.948 .66589 .50615 .22805 .13631

3242 26.529 16.316 .61502 .43488 .07867 -.09686 8518 21.046 13.672 .64962 .47882 .19724 .11298

3288 28.413 18.992 .66842 .53459 .28414 .17495 8596 17.217 11.738 .68175 .51903 .20421 .09215

3374 23.183 14.630 .63107 .46287 .19088 .10693 8788 32.458 19.624 .60457 .40544 .16112 .10874

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 14.682 10.230 .69678 .57988 .28736 .14054 9148 -- -- -- -- -- --

4030 17.267 11.721 .67879 .50021 .16261 .04352 9153 28.097 18.939 .67406 .46623 .12520 .00891

4089 21.083 14.465 .68612 .53973 .25817 .14919 9156 17.973 12.014 .66845 .50499 .20293 .09856

4112 17.187 11.712 .68145 .53155 .23640 .13024 9193 20.068 13.224 .65896 .47533 .17457 .09745

4306 20.455 13.415 .65584 .50557 .22344 .11279 9265 16.104 11.517 .71517 .59030 .29580 .16617

4850 25.706 17.027 .66239 .49113 .21397 .13219 9569 14.765 10.134 .68637 .54205 .23286 .11382

4856 21.354 13.762 .64444 .47635 .21051 .13814 9686 17.386 11.446 .65831 .49464 .19412 .09004
118 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–3.7. L-moments of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in eastern New 

Mexico.

[--, not available] 

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0199 32.427 22.326 0.68852 0.52519 0.24085 0.13047 4860 46.548 34.334 0.73759 0.59966 0.33255 0.20933

0205 28.210 19.128 .67804 .50732 .20803 .09692 4862 42.685 28.011 .65623 .45241 .16620 .09241

0208 31.629 21.870 .69144 .54954 .26993 .14073 5370 25.691 17.826 .69384 .53813 .24718 .13050

0404 63.896 40.529 .63429 .43269 .18369 .12727 5651 20.949 15.014 .71669 .59445 .30935 .16027

0407 57.148 35.277 .61730 .39496 .13184 .07620 5866 81.587 56.735 .69539 .57431 .32240 .18581

0600 25.809 17.671 .68468 .52145 .22844 .11737 6138 49.339 32.669 .66213 .50392 .25427 .16843

0606 41.216 27.862 .67599 .43211 .06567 -.03338 6275 45.834 30.381 .66284 .49548 .23853 .15149

0646 36.764 26.625 .72421 .57396 .28842 .16367 6435 28.586 19.775 .69176 .53118 .24008 .12400

1120 57.970 38.281 .66035 .48599 .23318 .15494 6492 29.292 18.880 .64456 .44134 .15590 .09657

1440 38.460 25.938 .67441 .49160 .20519 .10915 6619 30.763 21.515 .69938 .52720 .21918 .09899

1446 25.407 17.565 .69131 .53538 .23086 .09732 6659 27.074 18.156 .67061 .49462 .19777 .09714

1469 24.349 16.595 .68157 .51314 .21210 .10295 6797 43.674 28.128 .64405 .48688 .24659 .16643

1475 26.659 18.812 .70567 .52031 .17487 .02743 6951 32.678 22.244 .68070 .50714 .20995 .10112

1480 -- -- -- -- -- -- 7094 37.635 24.242 .64413 .45486 .18453 .10934

1515 37.102 25.148 .67781 .50944 .23580 .14298 7254 30.887 21.112 .68352 .51055 .21883 .11461

1807 20.546 14.198 .69103 .56072 .27381 .13416 7277 -- -- -- -- -- --

1840 30.227 20.628 .68244 .49275 .18225 .08320 7279 39.330 26.697 .67880 .49299 .20603 .12156

1881 -- -- -- -- -- -- 7283 56.175 35.808 .63744 .43673 .17381 .11453

1887 40.669 26.824 .65957 .48040 .20616 .12282 7604 -- -- -- -- -- --

1939 31.846 21.345 .67025 .49113 .19780 .09624 7605 32.067 22.762 .70983 .51883 .17605 .02928

1950 22.143 13.724 .61978 .39435 .07983 .02846 7609 33.892 23.150 .68307 .51958 .24339 .15029

1956 36.923 26.231 .71042 .57164 .32423 .24560 7610 29.180 19.518 .66887 .49746 .22167 .13749

1961 36.708 23.752 .64704 .44543 .13462 .03035 7638 37.208 25.301 .67998 .51115 .23704 .14159

1963 34.228 22.721 .66383 .47190 .17858 .09355 7649 53.592 35.119 .65531 .47820 .21919 .13521

1982 32.854 22.324 .67949 .49318 .20372 .12766 7651 53.187 36.118 .67907 .51795 .27885 .20591

2030 31.553 21.468 .68038 .49601 .19639 .10194 7735 47.688 32.137 .67390 .51511 .24888 .14143

2139 45.528 30.837 .67732 .52541 .27847 .17929 7736 53.189 34.833 .65489 .47188 .21216 .13285

2203 27.127 18.353 .67654 .50452 .22058 .13625 7738 40.637 28.621 .70429 .59877 .39095 .31256

2207 32.612 21.782 .66790 .47413 .17511 .09034 8072 45.129 28.460 .63063 .44122 .17967 .10465

2510 33.927 22.571 .66528 .48032 .19470 .10861 8078 34.551 23.303 .67443 .48979 .19060 .08479

2625 30.909 21.212 .68628 .52476 .22589 .09896 8084 24.732 16.760 .67766 .49703 .19843 .11754

2665 38.391 25.409 .66185 .49369 .22988 .14305 8085 38.819 25.049 .64527 .46318 .20671 .13697

2694 75.763 46.231 .61021 .46937 .23856 .11124 8187 33.513 22.523 .67204 .47585 .16199 .06345

2700 45.047 30.242 .67133 .48904 .21886 .14241 8358 20.449 15.125 .73965 .63115 .35323 .19625

3145 22.918 16.010 .69856 .55981 .27224 .14135 8501 38.183 25.960 .67989 .50030 .20947 .11116

3242 38.133 25.705 .67408 .52239 .17206 -.03688 8518 35.879 23.869 .66525 .49212 .22407 .14377

3288 49.757 33.461 .67249 .52901 .29699 .21334 8596 28.725 19.390 .67501 .47985 .16869 .08115

3374 37.487 24.787 .66122 .49713 .23494 .14714 8788 49.932 32.785 .65659 .48374 .23335 .15881

4026 -- -- -- -- -- -- 8816 -- -- -- -- -- --

4028 25.793 18.393 .71311 .56526 .26775 .13450 9148 -- -- -- -- -- --

4030 25.962 17.735 .68312 .48821 .15729 .04478 9153 41.397 28.845 .69679 .50025 .17729 .06637

4089 34.269 24.184 .70570 .55141 .27195 .15996 9156 30.023 20.462 .68152 .50066 .19740 .09303

4112 26.918 18.469 .68615 .51101 .20494 .09122 9193 35.596 22.662 .63666 .40845 .10996 .05901

4306 35.613 23.699 .66545 .48246 .18636 .08362 9265 23.857 16.972 .71139 .55508 .25073 .12835

4850 43.721 29.339 .67105 .49217 .22332 .14775 9569 27.355 18.960 .69313 .52140 .22110 .11595

4856 39.083 26.856 .68716 .53162 .26104 .14857 9686 28.026 19.203 .68519 .51841 .22445 .11453
Appendix 2 119

Appendix 2–4.1. Empirical distribution of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in eastern 

New Mexico. 

[--, not available]

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 0.02 0.02 0.05 0.10 0.15 0.30 0.61 1.26 1.50 4860 0.01 0.01 0.03 0.05 0.10 0.27 0.66 1.85 2.28

0205 .01 .01 .02 .05 .12 .30 .62 1.45 2.22 4862 .10 .10 .10 .10 .10 .30 .70 1.40 1.70

0208 .02 .02 .03 .06 .13 .28 .51 .84 1.14 5370 .02 .02 .05 .10 .16 .40 .80 1.74 2.50

0404 .10 .10 .10 .10 .10 .30 .60 1.40 2.63 5651 .01 .02 .04 .06 .15 .30 .68 1.39 1.80

0407 .10 .10 .10 .10 .10 .30 .50 1.02 1.50 5866 .02 .02 .03 .06 .16 .45 .83 1.76 2.42

0600 .01 .02 .04 .10 .10 .30 .69 1.60 2.31 6138 .01 .02 .03 .05 .12 .29 .57 1.32 1.90

0606 -- .02 .04 .10 .20 .34 .61 1.18 -- 6275 .01 .02 .04 .10 .11 .30 .60 1.30 1.60

0646 .02 .02 .04 .07 .16 .35 .68 1.57 1.95 6435 .01 .02 .04 .09 .11 .30 .60 1.36 1.80

1120 .02 .02 .06 .10 .19 .40 .71 1.42 1.80 6492 .01 .01 .02 .03 .09 .20 .41 1.09 2.12

1440 .03 .04 .10 .10 .10 .30 .60 1.30 1.60 6619 .02 .02 .04 .08 .18 .40 .82 1.88 2.30

1446 .02 .02 .04 .06 .17 .44 .86 1.77 2.16 6659 .02 .02 .04 .10 .16 .40 .88 2.09 3.00

1469 .02 .02 .05 .10 .13 .39 .80 1.99 2.50 6797 .01 .01 .03 .05 .10 .23 .46 1.24 1.72

1475 -- .01 .02 .04 .09 .31 .89 2.44 -- 6951 .01 .01 .03 .05 .12 .36 .71 1.42 2.16

1480 -- -- -- -- .32 -- -- -- -- 7094 .02 .02 .05 .10 .10 .30 .55 1.10 1.40

1515 .01 .02 .03 .08 .10 .30 .54 1.09 1.30 7254 .01 .02 .05 .10 .10 .30 .60 1.40 2.00

1807 .02 .02 .03 .05 .15 .33 .59 1.13 1.39 7277 -- -- -- -- .23 -- -- -- --

1840 .10 .10 .10 .10 .20 .30 .70 1.73 3.02 7279 .02 .03 .10 .10 .10 .30 .60 1.20 1.60

1881 -- -- -- .01 .08 .17 -- -- -- 7283 .01 .01 .01 .02 .07 .21 .50 1.22 1.72

1887 .01 .01 .01 .03 .10 .26 .60 1.51 2.04 7604 -- -- -- .01 .13 .38 -- -- --

1939 .01 .02 .05 .10 .17 .40 .83 1.80 2.39 7605 -- -- .10 .10 .10 .30 .78 -- --

1950 -- -- .04 .08 .24 .59 .94 -- -- 7609 .01 .01 .01 .02 .08 .25 .56 1.40 1.94

1956 -- -- .03 .05 .15 .30 .59 -- -- 7610 .01 .01 .02 .07 .10 .30 .70 1.80 2.58

1961 -- -- .02 .05 .10 .47 1.02 -- -- 7638 .02 .02 .05 .10 .14 .34 .70 1.40 1.80

1963 .02 .02 .05 .10 .12 .36 .80 1.76 2.30 7649 .01 .02 .03 .09 .13 .35 .67 1.30 1.60

1982 .10 .10 .10 .10 .10 .30 .50 1.10 1.30 7651 .10 .10 .10 .10 .20 .40 .70 1.39 1.84

2030 .01 .02 .05 .10 .12 .30 .70 1.51 1.96 7735 .02 .02 .04 .07 .16 .37 .73 1.58 1.87

2139 .01 .02 .03 .06 .13 .32 .60 1.38 1.96 7736 .02 .03 .10 .10 .20 .40 .80 1.62 2.10

2203 .10 .10 .10 .10 .20 .40 .80 2.43 2.80 7738 .01 .01 .03 .06 .16 .41 .89 1.61 2.35

2207 .02 .03 .08 .10 .20 .42 .80 1.70 1.90 8072 .01 .01 .02 .05 .10 .25 .50 1.10 1.46

2510 .02 .02 .05 .10 .12 .32 .60 1.39 1.80 8078 .01 .01 .02 .04 .10 .21 .44 1.01 1.30

2625 .01 .02 .03 .05 .11 .29 .69 1.61 2.15 8084 -- .01 .04 .08 .14 .26 .43 1.36 --

2665 .02 .02 .04 .09 .12 .30 .62 1.25 1.60 8085 .01 .02 .04 .10 .10 .26 .50 1.07 1.30

2694 .01 .01 .02 .04 .12 .30 .55 1.25 1.79 8187 .02 .02 .03 .06 .15 .35 .73 1.79 2.30

2700 .02 .02 .06 .10 .10 .20 .40 .89 1.10 8358 -- .01 .03 .06 .12 .30 .65 1.84 --

3145 .01 .02 .03 .05 .11 .30 .65 1.54 1.88 8501 .01 .02 .03 .08 .12 .30 .67 1.40 1.80

3242 -- -- .10 .14 .20 .54 1.00 -- -- 8518 .01 .02 .03 .06 .10 .24 .50 1.20 1.40

3288 .02 .02 .04 .06 .17 .34 .75 1.20 1.36 8596 .04 .10 .10 .10 .12 .40 .70 1.90 2.20

3374 .01 .01 .02 .04 .09 .21 .50 1.18 1.41 8788 .01 .02 .04 .07 .17 .36 .68 1.31 1.68

4026 -- -- -- -- .07 -- -- -- -- 8816 -- -- -- -- .04 -- -- -- --

4028 .01 .01 .02 .05 .12 .36 .78 2.05 2.29 9148 -- -- -- .03 .13 .14 -- -- --

4030 .10 .10 .10 .10 .10 .40 .82 1.62 2.37 9153 .01 .01 .02 .04 .15 .39 .84 1.88 3.24

4089 .01 .02 .04 .10 .10 .30 .69 1.50 1.74 9156 .01 .02 .05 .10 .16 .40 .80 1.60 2.08

4112 .03 .04 .10 .10 .12 .36 .74 1.80 2.56 9193 .04 .08 .10 .10 .10 .30 .60 1.20 1.64

4306 .01 .02 .03 .05 .12 .30 .58 1.28 1.57 9265 .01 .02 .10 .10 .11 .35 .70 1.90 2.86

4850 .01 .02 .03 .08 .10 .30 .57 1.30 1.90 9569 .10 .10 .10 .10 .20 .40 .80 1.51 2.00

4856 .01 .01 .02 .05 .10 .30 .60 1.53 2.04 9686 .01 .02 .03 .08 .10 .29 .50 1.11 1.30
120 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–4.2. Empirical distribution of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in eastern 

New Mexico. 

[--, not available]

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 0.02 0.02 0.05 0.10 0.18 0.36 0.70 1.34 1.62 4860 0.01 0.01 0.03 0.05 0.10 0.27 0.79 1.89 2.31

0205 .01 .01 .03 .05 .13 .30 .64 1.47 2.27 4862 .10 .10 .10 .10 .20 .40 .70 1.49 1.80

0208 .02 .02 .03 .06 .13 .29 .53 .85 1.25 5370 .02 .03 .06 .10 .20 .40 .88 1.81 2.62

0404 .10 .10 .10 .10 .20 .35 .72 1.40 2.88 5651 .02 .02 .05 .06 .15 .32 .71 1.40 1.84

0407 .10 .10 .10 .10 .10 .30 .50 1.20 1.50 5866 .02 .02 .04 .06 .17 .47 .88 1.81 2.52

0600 .02 .02 .04 .10 .11 .30 .70 1.70 2.37 6138 .02 .02 .03 .05 .14 .32 .63 1.45 1.99

0606 -- .03 .04 .10 .20 .35 .62 1.18 -- 6275 .02 .02 .04 .10 .13 .30 .66 1.35 1.71

0646 .02 .02 .04 .09 .19 .37 .72 1.59 2.02 6435 .01 .02 .04 .09 .12 .30 .61 1.45 1.99

1120 .02 .02 .07 .10 .20 .40 .80 1.54 1.87 6492 .01 .01 .02 .04 .09 .22 .44 1.09 2.28

1440 .03 .04 .10 .10 .17 .30 .61 1.30 1.60 6619 .02 .02 .04 .08 .18 .41 .85 1.95 2.30

1446 .02 .02 .04 .07 .18 .47 .89 1.84 2.32 6659 .02 .02 .05 .10 .18 .41 .90 2.15 3.29

1469 .02 .02 .05 .10 .15 .40 .80 2.02 2.57 6797 .01 .01 .03 .05 .12 .24 .47 1.27 1.83

1475 -- .01 .02 .04 .09 .31 .89 2.44 -- 6951 .01 .01 .03 .05 .12 .40 .72 1.48 2.24

1480 -- -- -- -- .32 -- -- -- -- 7094 .02 .02 .05 .10 .12 .30 .60 1.19 1.41

1515 .01 .02 .03 .08 .10 .30 .60 1.12 1.39 7254 .02 .02 .05 .10 .11 .30 .67 1.44 2.00

1807 .02 .02 .03 .05 .15 .33 .61 1.13 1.40 7277 -- -- -- -- .23 -- -- -- --

1840 .10 .10 .10 .10 .20 .40 .80 1.80 3.19 7279 .03 .04 .10 .10 .14 .30 .60 1.30 1.76

1881 -- -- -- .04 .08 .21 -- -- -- 7283 .01 .01 .01 .02 .07 .22 .52 1.29 1.74

1887 .01 .01 .01 .03 .10 .28 .63 1.64 2.17 7604 -- -- -- .01 .13 .38 -- -- --

1939 .01 .02 .05 .10 .20 .41 .90 1.84 2.49 7605 -- -- .10 .10 .15 .40 .79 -- --

1950 -- -- .04 .08 .27 .63 .99 -- -- 7609 .01 .01 .01 .03 .08 .26 .59 1.42 1.98

1956 -- -- .03 .06 .15 .30 .64 -- -- 7610 .01 .01 .02 .07 .10 .33 .76 1.93 2.64

1961 -- -- .01 .05 .10 .51 1.06 -- -- 7638 .02 .03 .06 .10 .16 .37 .75 1.53 1.93

1963 .02 .02 .05 .10 .15 .40 .80 1.86 2.41 7649 .01 .02 .04 .10 .15 .39 .70 1.40 1.70

1982 .10 .10 .10 .10 .10 .30 .50 1.10 1.40 7651 .10 .10 .10 .10 .20 .40 .80 1.50 1.96

2030 .01 .02 .05 .10 .14 .36 .70 1.60 2.00 7735 .02 .02 .04 .08 .18 .40 .78 1.61 1.88

2139 .01 .02 .03 .06 .13 .33 .61 1.40 1.98 7736 .03 .03 .10 .10 .20 .41 .90 1.76 2.10

2203 .10 .10 .10 .10 .20 .40 .80 2.50 2.84 7738 .01 .01 .03 .07 .19 .47 .95 1.66 2.37

2207 .02 .03 .09 .10 .20 .42 .80 1.83 2.15 8072 .01 .01 .03 .05 .11 .26 .53 1.22 1.57

2510 .02 .03 .05 .10 .14 .36 .70 1.50 1.81 8078 .01 .01 .02 .05 .10 .22 .45 1.02 1.32

2625 .02 .02 .03 .05 .12 .30 .70 1.63 2.23 8084 -- .01 .04 .08 .15 .28 .44 1.36 --

2665 .02 .02 .05 .10 .14 .32 .65 1.30 1.66 8085 .02 .02 .05 .10 .10 .30 .59 1.10 1.46

2694 .01 .01 .03 .05 .15 .35 .64 1.44 2.41 8187 .02 .02 .04 .06 .15 .36 .78 1.92 2.30

2700 .02 .03 .06 .10 .10 .20 .45 .90 1.20 8358 -- .02 .04 .06 .14 .32 .65 1.88 --

3145 .02 .02 .03 .06 .12 .30 .70 1.54 2.04 8501 .01 .02 .04 .08 .14 .34 .70 1.50 1.92

3242 -- -- .10 .15 .20 .55 1.01 -- -- 8518 .01 .02 .03 .06 .10 .27 .55 1.21 1.42

3288 .02 .02 .04 .07 .18 .36 .75 1.25 1.86 8596 .07 .10 .10 .10 .20 .40 .80 2.00 2.30

3374 .01 .02 .02 .04 .10 .23 .52 1.19 1.44 8788 .01 .02 .04 .08 .20 .40 .73 1.32 1.76

4026 -- -- -- -- .07 -- -- -- -- 8816 -- -- -- -- .04 -- -- -- --

4028 .01 .01 .02 .05 .13 .37 .80 2.10 2.38 9148 -- -- -- .02 .13 .20 -- -- --

4030 .10 .10 .10 .10 .20 .40 .90 1.64 2.48 9153 .01 .01 .02 .04 .15 .39 .86 1.89 3.26

4089 .02 .02 .05 .10 .12 .34 .70 1.52 1.82 9156 .01 .02 .05 .10 .18 .40 .80 1.62 2.17

4112 .03 .04 .10 .10 .19 .40 .80 1.80 2.72 9193 .04 .08 .10 .10 .10 .30 .60 1.30 1.78

4306 .01 .02 .03 .05 .12 .31 .60 1.28 1.60 9265 .01 .02 .10 .10 .16 .40 .80 1.90 3.00

4850 .01 .02 .03 .09 .11 .30 .60 1.51 2.08 9569 .10 .10 .10 .10 .20 .40 .80 1.56 2.10

4856 .01 .01 .02 .05 .11 .31 .64 1.60 2.11 9686 .01 .02 .03 .08 .10 .30 .52 1.18 1.38
Appendix 2 121

Appendix 2–4.3. Empirical distribution of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in eastern 

New Mexico.

[--, not available]

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 0.02 0.02 0.05 0.10 0.20 0.40 0.70 1.50 1.73 4860 0.01 0.01 0.03 0.05 0.11 0.29 0.82 2.03 2.53

0205 .01 .01 .03 .05 .14 .33 .69 1.56 2.24 4862 .10 .10 .10 .10 .20 .40 .80 1.67 1.90

0208 .02 .03 .04 .07 .15 .32 .56 .86 1.57 5370 .02 .03 .06 .10 .20 .45 .92 1.94 3.33

0404 .10 .10 .10 .10 .20 .40 .80 1.90 3.47 5651 .02 .02 .05 .06 .15 .37 .72 1.82 2.46

0407 .10 .10 .10 .10 .20 .30 .70 1.40 1.70 5866 .02 .02 .04 .07 .23 .50 1.04 1.82 2.65

0600 .02 .02 .05 .10 .14 .36 .78 1.76 2.70 6138 .02 .02 .03 .06 .15 .35 .69 1.55 2.20

0606 -- .02 .05 .12 .20 .38 .66 1.29 -- 6275 .02 .02 .05 .10 .15 .35 .70 1.40 1.88

0646 .02 .03 .05 .10 .20 .40 .75 1.71 2.19 6435 .01 .02 .04 .10 .15 .35 .69 1.60 2.00

1120 .02 .03 .08 .10 .20 .48 .90 1.70 2.10 6492 .01 .01 .02 .05 .10 .25 .45 1.17 2.37

1440 .03 .04 .10 .10 .20 .40 .70 1.49 1.88 6619 .02 .02 .05 .09 .20 .42 .88 1.95 2.30

1446 .02 .02 .05 .07 .20 .50 .94 1.93 2.61 6659 .02 .02 .05 .10 .20 .49 .99 2.20 3.42

1469 .02 .02 .05 .10 .20 .40 .90 2.24 2.89 6797 .01 .01 .03 .06 .13 .26 .54 1.51 1.84

1475 -- .01 .02 .04 .09 .32 .94 2.95 -- 6951 .01 .02 .03 .05 .12 .40 .82 1.49 2.31

1480 -- -- -- -- .32 -- -- -- -- 7094 .02 .03 .05 .10 .15 .31 .63 1.25 1.50

1515 .01 .02 .04 .09 .12 .31 .60 1.20 1.50 7254 .02 .02 .05 .10 .14 .30 .70 1.60 2.20

1807 .02 .02 .03 .05 .15 .35 .64 1.20 1.53 7277 -- -- -- -- .23 -- -- -- --

1840 .10 .10 .10 .10 .20 .40 .90 1.88 3.28 7279 .03 .04 .10 .10 .20 .40 .70 1.40 1.79

1881 -- -- -- -- .08 -- -- -- -- 7283 .01 .01 .01 .03 .08 .25 .55 1.38 1.84

1887 .01 .01 .01 .03 .11 .30 .66 1.83 2.26 7604 -- -- -- .01 .13 .38 -- -- --

1939 .02 .02 .05 .10 .20 .48 .92 2.05 2.84 7605 -- -- .10 .10 .20 .45 .90 -- --

1950 -- -- .07 .15 .30 .66 1.19 -- -- 7609 .01 .01 .01 .03 .09 .28 .65 1.61 2.23

1956 -- -- .03 .05 .15 .33 .66 -- -- 7610 .01 .01 .02 .08 .13 .40 .80 2.09 2.84

1961 -- -- .04 .05 .10 .52 1.10 -- -- 7638 .02 .03 .06 .10 .19 .40 .83 1.70 2.05

1963 .02 .02 .05 .10 .18 .40 .90 1.94 2.61 7649 .01 .02 .04 .10 .19 .40 .80 1.59 1.90

1982 .10 .10 .10 .10 .10 .30 .60 1.28 1.60 7651 .10 .10 .10 .10 .20 .50 .83 1.70 2.07

2030 .01 .02 .05 .10 .17 .40 .80 1.70 2.18 7735 .02 .02 .05 .09 .20 .45 .85 1.76 2.23

2139 .01 .02 .04 .07 .15 .36 .62 1.43 2.05 7736 .03 .05 .10 .10 .20 .50 .95 1.91 2.51

2203 .10 .10 .10 .10 .20 .50 .90 2.60 3.10 7738 .01 .01 .03 .07 .20 .49 1.05 2.04 2.40

2207 .02 .03 .09 .10 .20 .50 .86 1.90 2.66 8072 .01 .01 .03 .05 .12 .29 .61 1.33 1.60

2510 .02 .03 .06 .10 .16 .40 .72 1.57 2.05 8078 .01 .01 .02 .05 .11 .24 .48 1.16 1.42

2625 .02 .02 .03 .05 .14 .34 .80 1.66 2.36 8084 -- .01 .04 .08 .15 .28 .44 1.36 --

2665 .02 .02 .05 .10 .16 .37 .70 1.42 1.72 8085 .02 .02 .05 .10 .12 .30 .60 1.24 1.53

2694 .02 .02 .03 .05 .19 .43 .72 1.45 2.89 8187 .02 .02 .04 .06 .17 .39 .85 2.05 2.35

2700 .02 .03 .07 .10 .10 .27 .50 1.00 1.28 8358 -- .02 .04 .06 .15 .33 .72 1.93 --

3145 .02 .02 .04 .06 .14 .32 .71 1.80 2.08 8501 .02 .02 .04 .09 .15 .38 .75 1.60 1.98

3242 -- -- .10 .15 .20 .55 1.01 -- -- 8518 .02 .02 .03 .07 .10 .30 .60 1.30 1.56

3288 .01 .02 .04 .07 .20 .43 .81 1.65 2.35 8596 .07 .10 .10 .10 .20 .40 .80 2.00 2.29

3374 .01 .02 .03 .05 .10 .25 .55 1.23 1.56 8788 .01 .02 .04 .09 .20 .42 .77 1.38 1.77

4026 -- -- -- -- .07 -- -- -- -- 8816 -- -- -- -- .04 -- -- -- --

4028 .01 .01 .02 .05 .13 .38 .84 2.20 2.55 9148 -- -- -- .02 .13 .20 -- -- --

4030 .10 .10 .10 .10 .20 .50 1.00 1.66 2.69 9153 .01 .02 .02 .06 .15 .41 .94 2.03 3.49

4089 .02 .02 .05 .10 .15 .40 .79 1.64 2.27 9156 .01 .02 .06 .10 .20 .42 .90 1.80 2.40

4112 .03 .05 .10 .10 .20 .40 .80 1.90 2.90 9193 .05 .10 .10 .10 .20 .30 .70 1.52 1.86

4306 .01 .02 .03 .05 .12 .32 .64 1.36 1.60 9265 .01 .02 .10 .10 .20 .40 .80 2.39 3.20

4850 .01 .02 .04 .10 .14 .32 .69 1.65 2.11 9569 .10 .10 .10 .10 .20 .40 .90 1.83 2.23

4856 .01 .02 .03 .05 .12 .32 .71 1.70 2.21 9686 .02 .02 .04 .08 .11 .30 .60 1.20 1.44
122 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–4.4. Empirical distribution of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in eastern 

New Mexico.

[--, not available] 

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 0.02 0.03 0.06 0.10 0.20 0.40 0.80 1.67 1.97 4860 0.01 0.02 0.04 0.06 0.12 0.34 0.93 2.21 2.57

0205 .01 .01 .03 .05 .15 .35 .74 1.87 2.43 4862 .10 .10 .10 .10 .20 .40 .90 1.90 2.31

0208 .02 .03 .04 .08 .16 .34 .60 1.00 1.81 5370 .02 .03 .07 .10 .20 .50 1.00 2.20 3.99

0404 .10 .10 .10 .10 .20 .50 .90 2.44 3.50 5651 .01 .02 .05 .06 .18 .40 .72 1.83 2.54

0407 .10 .10 .10 .10 .20 .40 .80 1.53 2.09 5866 .02 .02 .03 .07 .24 .54 1.28 1.97 2.79

0600 .02 .02 .05 .10 .17 .40 .80 2.00 2.86 6138 .02 .02 .03 .07 .17 .39 .79 1.64 2.25

0606 -- .02 .05 .12 .20 .40 .67 1.30 -- 6275 .02 .03 .05 .10 .20 .40 .80 1.60 2.10

0646 .02 .03 .05 .10 .20 .45 .80 1.83 2.27 6435 .02 .02 .05 .10 .17 .40 .70 1.76 2.20

1120 .03 .03 .09 .10 .22 .50 1.00 1.90 2.39 6492 .01 .01 .02 .05 .12 .28 .51 1.65 2.42

1440 .03 .04 .10 .10 .20 .40 .80 1.70 2.00 6619 .02 .02 .05 .10 .20 .44 .93 1.96 2.30

1446 .02 .02 .05 .09 .21 .54 .98 2.05 2.93 6659 .02 .02 .05 .10 .20 .50 1.05 2.65 3.58

1469 .02 .02 .05 .10 .20 .47 .95 2.30 3.00 6797 .01 .01 .03 .06 .15 .30 .60 1.62 1.91

1475 -- .01 .02 .04 .08 .33 1.04 3.10 -- 6951 .01 .02 .03 .05 .15 .43 .85 1.53 2.40

1480 -- -- -- -- .32 -- -- -- -- 7094 .02 .03 .05 .10 .18 .40 .70 1.40 1.70

1515 .02 .02 .04 .10 .15 .39 .67 1.30 1.64 7254 .02 .03 .06 .10 .18 .37 .80 1.70 2.40

1807 .02 .02 .03 .05 .15 .36 .69 1.46 1.69 7277 -- -- -- -- .23 -- -- -- --

1840 .10 .10 .10 .10 .20 .40 .90 1.95 3.35 7279 .03 .04 .10 .10 .20 .40 .80 1.60 1.96

1881 -- -- -- -- .08 -- -- -- -- 7283 .01 .01 .01 .03 .09 .28 .62 1.50 1.88

1887 .01 .01 .02 .04 .12 .33 .72 1.89 2.44 7604 -- -- -- .01 .23 .45 -- -- --

1939 .02 .02 .05 .10 .20 .50 1.02 2.15 2.94 7605 -- -- .10 .10 .20 .60 .90 -- --

1950 -- -- .07 .15 .30 .66 1.19 -- -- 7609 .01 .01 .01 .03 .10 .31 .72 1.76 2.62

1956 -- -- .03 .06 .15 .42 .73 -- -- 7610 .01 .01 .02 .10 .16 .40 .90 2.30 2.97

1961 -- -- .04 .07 .20 .54 1.16 -- -- 7638 .02 .03 .06 .10 .20 .45 .90 1.90 2.25

1963 .02 .02 .05 .10 .20 .50 1.00 2.24 2.84 7649 .01 .02 .04 .10 .20 .48 .90 1.71 2.18

1982 .10 .10 .10 .10 .20 .40 .70 1.40 1.84 7651 .10 .10 .10 .10 .20 .60 1.05 1.95 2.38

2030 .01 .02 .05 .10 .20 .40 .80 1.80 2.50 7735 .02 .02 .05 .10 .22 .51 .99 1.88 2.45

2139 -- .02 .04 .07 .17 .42 .71 1.73 -- 7736 .03 .06 .10 .10 .30 .60 1.10 2.17 2.80

2203 .10 .10 .10 .10 .20 .50 1.00 2.68 3.45 7738 .01 .02 .05 .10 .24 .59 1.28 2.35 2.46

2207 .03 .04 .10 .10 .20 .50 1.02 1.93 2.89 8072 .01 .01 .03 .06 .14 .32 .68 1.41 1.63

2510 .02 .03 .06 .10 .20 .41 .80 1.80 2.32 8078 .01 .01 .02 .05 .12 .25 .51 1.35 2.02

2625 .01 .02 .03 .06 .14 .35 .80 1.79 2.76 8084 -- .01 .05 .08 .15 .29 .60 1.55 --

2665 .02 .03 .05 .10 .20 .40 .80 1.60 1.90 8085 .02 .02 .05 .10 .16 .35 .69 1.46 1.69

2694 .02 .02 .03 .07 .20 .49 .85 1.53 3.33 8187 .02 .02 .04 .07 .18 .40 .93 2.14 2.42

2700 .02 .03 .07 .10 .10 .30 .56 1.17 1.41 8358 -- .02 .04 .08 .15 .34 .78 2.37 --

3145 .02 .02 .04 .06 .15 .35 .78 1.80 2.24 8501 .02 .02 .04 .10 .18 .40 .81 1.70 2.07

3242 -- -- .10 .18 .31 .84 1.58 -- -- 8518 .02 .02 .04 .07 .12 .32 .65 1.41 1.74

3288 .01 .02 .04 .08 .20 .46 .92 1.78 2.40 8596 .07 .10 .10 .10 .20 .50 .90 2.10 2.67

3374 .01 .02 .03 .05 .11 .28 .63 1.29 1.65 8788 .02 .02 .05 .10 .22 .50 .93 1.59 1.92

4026 -- -- -- -- .07 -- -- -- -- 8816 -- -- -- -- .04 -- -- -- --

4028 .01 .01 .03 .05 .14 .41 .90 2.23 2.59 9148 -- -- -- .04 .14 .22 -- -- --

4030 .10 .10 .10 .10 .20 .50 1.10 1.69 2.91 9153 .02 .02 .03 .09 .16 .46 1.01 2.04 3.69

4089 .02 .02 .05 .10 .20 .42 .86 1.80 2.39 9156 .01 .02 .07 .10 .20 .50 .99 1.94 2.50

4112 .03 .05 .10 .10 .20 .50 .94 2.05 3.06 9193 .06 .10 .10 .10 .20 .40 .70 1.60 2.00

4306 .01 .02 .03 .05 .12 .33 .69 1.72 1.97 9265 .02 .02 .10 .10 .20 .40 .90 2.80 3.68

4850 .01 .02 .04 .10 .16 .39 .78 1.82 2.30 9569 .10 .10 .10 .10 .20 .50 1.00 2.00 2.40

4856 .01 .02 .03 .05 .13 .40 .75 1.92 2.40 9686 .02 .02 .04 .09 .13 .35 .61 1.30 1.60
Appendix 2 123

Appendix 2–4.5. Empirical distribution of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in eastern 

New Mexico.

[--, not available] 

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 0.02 0.03 0.07 0.10 0.20 0.46 0.91 1.71 2.10 4860 -- 0.02 0.04 0.07 0.16 0.48 0.97 2.38 --

0205 .01 .01 .03 .06 .16 .38 .78 1.90 2.52 4862 0.10 .10 .10 .10 .20 .50 1.00 2.30 2.53

0208 .03 .03 .05 .08 .17 .39 .70 1.08 1.95 5370 .02 .03 .07 .10 .22 .50 1.10 2.50 4.45

0404 .10 .10 .10 .10 .30 .50 1.03 2.91 3.82 5651 .01 .02 .05 .07 .20 .41 .73 1.93 2.58

0407 .10 .10 .10 .10 .20 .50 1.10 1.84 2.30 5866 -- .03 .05 .09 .30 .73 1.58 2.36 --

0600 .02 .02 .05 .10 .19 .41 .90 2.12 3.00 6138 .02 .02 .04 .08 .20 .44 .90 1.82 2.87

0606 -- .03 .06 .15 .22 .60 .78 1.52 -- 6275 .02 .03 .05 .10 .20 .47 .97 1.96 2.70

0646 .02 .03 .05 .10 .25 .52 1.00 1.85 2.38 6435 .02 .02 .05 .10 .20 .40 .80 1.90 2.40

1120 .03 .04 .10 .10 .30 .60 1.18 2.38 2.73 6492 .01 .01 .03 .05 .14 .30 .60 1.71 2.52

1440 .03 .04 .10 .10 .20 .50 1.00 1.90 2.20 6619 .02 .03 .05 .10 .24 .52 .98 2.31 2.75

1446 .02 .02 .05 .10 .24 .57 1.02 2.16 3.21 6659 .02 .02 .05 .10 .20 .53 1.20 2.95 4.12

1469 .02 .02 .05 .10 .20 .50 1.00 2.41 3.30 6797 .01 .02 .03 .07 .16 .36 .70 1.65 2.04

1475 -- .01 .02 .04 .09 .38 1.07 3.11 -- 6951 .01 .01 .03 .06 .18 .47 .90 1.86 2.51

1480 -- -- -- -- .32 -- -- -- -- 7094 .02 .03 .05 .10 .20 .40 .80 1.60 1.88

1515 .02 .02 .04 .10 .20 .40 .71 1.42 1.92 7254 .02 .03 .06 .10 .20 .40 .90 2.00 2.42

1807 .02 .02 .03 .05 .17 .43 .72 1.50 1.69 7277 -- -- -- -- .23 -- -- -- --

1840 .10 .10 .10 .10 .20 .50 1.10 2.45 3.44 7279 .03 .04 .10 .10 .20 .50 .90 1.75 2.20

1881 -- -- -- -- .08 -- -- -- -- 7283 .01 .01 .01 .03 .11 .34 .86 1.85 2.21

1887 .01 .01 .02 .04 .13 .37 .85 2.13 2.86 7604 -- -- -- .01 .23 .45 -- -- --

1939 .02 .02 .05 .10 .21 .57 1.14 2.50 3.30 7605 -- -- .10 .10 .30 .68 1.08 -- --

1950 -- -- .07 .14 .29 .67 1.55 -- -- 7609 .01 .01 .01 .03 .11 .34 .77 1.93 2.84

1956 -- -- .04 .07 .17 .44 .75 -- -- 7610 .01 .01 .03 .10 .19 .48 1.03 2.43 3.24

1961 -- -- .04 .07 .20 .54 1.16 -- -- 7638 .02 .03 .08 .10 .20 .50 1.08 2.10 2.33

1963 .02 .02 .06 .10 .20 .50 1.14 2.40 3.04 7649 .02 .02 .05 .10 .23 .55 1.02 2.02 2.48

1982 .10 .10 .10 .10 .20 .40 .80 1.60 2.00 7651 .10 .10 .10 .10 .30 .70 1.20 2.40 3.23

2030 .02 .02 .06 .10 .20 .50 .98 2.10 2.70 7735 .02 .03 .05 .10 .25 .64 1.15 2.31 2.80

2139 -- .02 .05 .10 .21 .49 .76 1.96 -- 7736 .05 .08 .10 .10 .30 .70 1.30 2.50 3.42

2203 .10 .10 .10 .10 .20 .60 1.10 2.80 3.69 7738 .01 .02 .05 .10 .29 .77 1.32 2.44 3.54

2207 .03 .04 .10 .10 .26 .60 1.15 2.04 3.16 8072 .01 .01 .03 .06 .15 .37 .74 1.61 2.07

2510 .03 .03 .07 .10 .20 .50 .90 1.90 2.44 8078 .01 .01 .02 .05 .14 .29 .58 1.41 2.25

2625 .01 .02 .04 .06 .15 .35 .90 1.91 3.01 8084 -- .01 .04 .08 .15 .31 .65 1.57 --

2665 .02 .03 .05 .10 .20 .45 .90 1.71 2.14 8085 .02 .02 .05 .10 .20 .40 .80 1.58 1.80

2694 .02 .02 .04 .10 .33 .55 1.03 2.30 4.17 8187 .02 .02 .04 .07 .20 .50 1.10 2.38 2.77

2700 .02 .03 .09 .10 .20 .30 .64 1.35 1.78 8358 -- .02 .05 .08 .15 .36 .81 2.43 --

3145 .02 .02 .04 .07 .15 .39 .85 1.92 2.41 8501 .02 .02 .04 .10 .20 .48 .94 1.90 2.36

3242 -- -- .10 .18 .32 .88 1.65 -- -- 8518 .02 .02 .04 .08 .15 .38 .74 1.61 2.20

3288 .01 .02 .05 .08 .22 .57 .98 2.40 2.65 8596 .07 .10 .10 .10 .20 .50 1.10 2.20 2.70

3374 .01 .02 .03 .05 .13 .32 .69 1.53 1.72 8788 .02 .03 .05 .11 .26 .59 1.06 1.84 2.30

4026 -- -- -- -- .00 -- -- -- -- 8816 -- -- -- -- .04 -- -- -- --

4028 .01 .02 .03 .05 .15 .41 1.09 2.34 2.64 9148 -- -- -- .04 .13 .31 -- -- --

4030 .10 .10 .10 .10 .20 .50 1.10 1.72 3.13 9153 -- .02 .03 .08 .16 .47 1.01 2.52 --

4089 .02 .03 .05 .10 .20 .50 .92 2.30 2.80 9156 .02 .02 .08 .10 .20 .51 1.10 2.16 2.76

4112 .03 .05 .10 .10 .20 .50 1.00 2.51 3.18 9193 .07 .10 .10 .10 .20 .40 .80 1.81 2.10

4306 .01 .02 .03 .05 .14 .40 .80 1.82 2.12 9265 .02 .02 .10 .10 .20 .50 1.00 2.90 4.01

4850 .02 .02 .05 .10 .20 .41 .92 2.12 2.44 9569 .10 .10 .10 .10 .20 .50 1.10 2.20 2.50

4856 .01 .02 .03 .05 .14 .44 .91 2.03 2.42 9686 .02 .02 .04 .10 .15 .38 .69 1.38 1.81
124 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–4.6. Empirical distribution of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in eastern 

New Mexico.

[--, not available]

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 0.02 0.03 0.07 0.10 0.26 0.52 1.10 2.10 2.48 4860 -- 0.02 0.04 0.07 0.21 0.56 1.29 3.99 --

0205 .01 .01 .03 .07 .19 .46 .98 2.25 3.09 4862 0.10 .10 .10 .10 .30 .70 1.50 2.50 3.01

0208 .02 .03 .05 .09 .20 .44 .78 1.89 2.10 5370 .02 .03 .08 .10 .29 .60 1.20 3.27 4.88

0404 .10 .10 .10 .20 .35 .72 1.55 3.43 4.41 5651 .01 .02 .05 .07 .20 .41 .87 2.28 2.79

0407 .10 .10 .10 .10 .40 .80 1.41 2.31 3.10 5866 -- .03 .07 .15 .43 1.01 2.12 3.41 --

0600 .02 .02 .06 .10 .20 .50 1.00 2.37 3.40 6138 .02 .02 .05 .10 .25 .56 1.18 2.41 3.42

0606 -- -- .08 .16 .30 .68 1.25 -- -- 6275 .02 .03 .06 .10 .26 .60 1.24 2.90 3.51

0646 .02 .03 .05 .10 .30 .64 1.20 2.18 2.61 6435 .02 .02 .05 .10 .20 .50 .97 2.13 2.92

1120 .03 .05 .10 .16 .40 .88 1.60 3.20 4.02 6492 .01 .01 .03 .06 .16 .35 .63 1.91 3.64

1440 .04 .05 .10 .10 .30 .60 1.30 2.40 3.02 6619 .02 .03 .05 .11 .30 .63 1.23 2.46 3.29

1446 .02 .02 .05 .10 .26 .65 1.37 2.62 3.83 6659 .02 .02 .05 .10 .25 .65 1.39 3.39 5.07

1469 .02 .02 .05 .10 .24 .60 1.20 2.86 3.62 6797 .01 .02 .05 .09 .20 .44 1.07 1.79 2.59

1475 -- -- .02 .04 .09 .38 1.12 -- -- 6951 .01 .02 .03 .07 .20 .52 1.11 2.33 2.94

1480 -- -- -- -- .32 -- -- -- -- 7094 .02 .03 .06 .10 .20 .50 1.02 1.90 2.33

1515 .02 .02 .05 .10 .20 .50 .91 1.91 2.25 7254 .02 .03 .07 .10 .20 .50 1.08 2.40 3.00

1807 .02 .02 .03 .05 .18 .47 .83 1.60 1.70 7277 -- -- -- -- .23 -- -- -- --

1840 .10 .10 .10 .10 .30 .60 1.30 3.04 3.98 7279 .03 .05 .10 .10 .28 .60 1.10 2.30 2.90

1881 -- -- -- -- .44 -- -- -- -- 7283 .01 .01 .02 .04 .15 .49 1.13 2.45 2.97

1887 .01 .01 .02 .05 .17 .50 1.15 2.69 3.31 7604 -- -- -- -- .43 -- -- -- --

1939 .02 .02 .06 .10 .28 .70 1.40 3.01 3.79 7605 -- -- .10 .10 .35 .75 1.22 -- --

1950 -- -- .06 .17 .30 .90 1.72 -- -- 7609 .01 .01 .02 .04 .15 .41 .99 2.26 2.95

1956 -- -- .04 .07 .24 .46 1.21 -- -- 7610 .01 .01 .03 .10 .20 .58 1.20 2.80 3.82

1961 -- -- .05 .09 .29 .70 1.24 -- -- 7638 .03 .04 .09 .10 .30 .66 1.30 2.40 2.90

1963 .02 .02 .07 .10 .27 .62 1.40 2.81 3.76 7649 .02 .02 .05 .10 .30 .78 1.40 2.71 3.38

1982 .10 .10 .10 .10 .20 .50 .90 2.00 2.50 7651 .10 .10 .10 .10 .40 .90 1.70 3.98 4.20

2030 .02 .02 .07 .10 .20 .60 1.20 2.60 3.02 7735 .02 .03 .06 .12 .30 .75 1.57 2.94 3.65

2139 -- .02 .05 .13 .27 .62 1.45 2.47 -- 7736 .05 .08 .10 .20 .40 .90 1.86 3.74 4.42

2203 .10 .10 .10 .10 .30 .70 1.49 3.20 4.24 7738 .01 .02 .05 .11 .36 .82 1.67 2.49 3.76

2207 .04 .05 .10 .10 .30 .70 1.41 2.91 3.53 8072 .01 .02 .04 .08 .21 .49 .93 1.86 2.43

2510 .03 .03 .08 .10 .24 .60 1.10 2.36 3.07 8078 .01 .01 .03 .06 .16 .35 .66 1.98 2.57

2625 .02 .02 .04 .07 .18 .47 1.00 2.19 3.46 8084 -- -- .05 .09 .20 .39 .72 -- --

2665 .02 .03 .06 .10 .25 .57 1.10 2.16 2.60 8085 .02 .02 .07 .10 .21 .50 1.00 1.81 2.11

2694 -- .03 .06 .17 .46 .89 1.61 3.64 -- 8187 .02 .02 .04 .10 .26 .58 1.45 2.95 3.20

2700 .03 .04 .10 .10 .20 .49 .90 1.90 2.27 8358 -- .03 .05 .10 .19 .38 .92 2.84 --

3145 .02 .02 .04 .07 .19 .43 1.00 2.40 2.70 8501 .02 .02 .05 .10 .24 .60 1.19 2.30 2.97

3242 -- -- .10 .17 .35 .93 1.97 -- -- 8518 .02 .02 .04 .10 .20 .45 .90 2.01 2.57

3288 -- .02 .05 .11 .25 .60 1.35 2.55 -- 8596 .07 .10 .10 .10 .30 .65 1.30 2.69 3.19

3374 .01 .02 .03 .06 .16 .42 .82 1.72 2.06 8788 .02 .03 .08 .15 .35 .75 1.35 2.30 2.83

4026 -- -- -- -- .00 -- -- -- -- 8816 -- -- -- -- .04 -- -- -- --

4028 .01 .01 .03 .05 .17 .46 1.36 2.64 2.92 9148 -- -- -- -- .13 -- -- -- --

4030 .10 .10 .10 .10 .30 .70 1.43 2.20 3.71 9153 -- .02 .03 .09 .19 .73 1.76 3.72 --

4089 .02 .03 .05 .10 .20 .57 1.20 2.79 3.70 9156 .02 .02 .09 .10 .26 .63 1.30 2.60 3.13

4112 .04 .05 .10 .10 .30 .60 1.20 3.01 3.77 9193 .07 .10 .10 .10 .26 .50 1.10 2.09 2.62

4306 .01 .02 .03 .05 .18 .50 .97 1.91 2.52 9265 .02 .03 .10 .10 .20 .60 1.20 3.19 5.77

4850 .02 .02 .05 .10 .24 .51 1.16 2.38 2.66 9569 .10 .10 .10 .10 .30 .60 1.22 2.50 2.75

4856 .01 .02 .03 .06 .19 .47 1.08 2.34 2.47 9686 .02 .02 .04 .10 .20 .43 .84 1.70 2.10
Appendix 2 125

Appendix 2–4.7. Empirical distribution of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in eastern 

New Mexico.

[--, not available]

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 0.02 0.03 0.09 0.10 0.30 0.62 1.30 2.48 2.99 4860 -- 0.01 0.03 0.08 0.22 0.67 1.64 4.64 --

0205 .01 .01 .03 .08 .20 .52 1.14 2.57 3.46 4862 0.10 .10 .10 .20 .40 .90 1.90 3.10 3.52

0208 .02 .03 .05 .10 .20 .52 .92 2.28 2.52 5370 .02 .03 .08 .10 .30 .70 1.36 3.71 5.11

0404 -- .10 .10 .23 .50 1.18 2.06 4.91 -- 5651 .01 .02 .05 .07 .20 .47 .90 2.44 2.85

0407 .10 .10 .10 .20 .40 1.00 1.74 2.77 3.62 5866 -- -- .07 .17 .43 1.07 3.15 -- --

0600 .02 .02 .06 .10 .21 .60 1.10 3.04 3.64 6138 .02 .02 .05 .10 .27 .68 1.45 3.34 4.78

0606 -- -- .11 .18 .35 .92 1.36 -- -- 6275 .02 .03 .07 .10 .30 .77 1.50 3.27 4.06

0646 .02 .03 .05 .10 .29 .68 1.47 3.11 4.21 6435 .02 .03 .05 .10 .23 .58 1.10 2.57 3.34

1120 .03 .04 .10 .20 .47 1.03 2.10 4.48 5.65 6492 .01 .01 .04 .07 .19 .42 .72 2.20 3.88

1440 .04 .06 .10 .10 .30 .80 1.52 2.72 3.21 6619 .02 .03 .07 .13 .33 .82 1.48 2.61 3.65

1446 .02 .02 .05 .10 .29 .71 1.49 3.07 4.50 6659 .02 .02 .06 .10 .30 .72 1.48 4.04 5.40

1469 .02 .03 .05 .10 .30 .61 1.36 3.27 4.25 6797 .01 .02 .05 .10 .22 .54 1.22 2.27 3.01

1475 -- -- .02 .04 .12 .63 1.44 -- -- 6951 .01 .01 .03 .10 .25 .59 1.28 2.75 3.18

1480 -- -- -- -- .01 -- -- -- -- 7094 .02 .03 .06 .10 .30 .60 1.27 2.30 2.82

1515 .02 .02 .06 .10 .25 .60 1.18 2.29 2.86 7254 .02 .03 .07 .10 .24 .60 1.30 2.50 3.10

1807 .02 .02 .03 .07 .23 .51 .87 1.63 1.93 7277 -- -- -- -- .23 -- -- -- --

1840 .10 .10 .10 .10 .30 .80 1.40 3.44 4.24 7279 .03 .04 .10 .10 .30 .70 1.40 2.75 3.53

1881 -- -- -- -- .44 -- -- -- -- 7283 .01 .01 .02 .05 .19 .61 1.42 2.96 4.09

1887 .01 .01 .02 .06 .20 .62 1.40 2.97 3.70 7604 -- -- -- -- .46 -- -- -- --

1939 .02 .02 .06 .10 .30 .80 1.68 3.50 4.45 7605 -- -- .10 .10 .30 1.10 1.68 -- --

1950 -- -- .05 .17 .39 .78 1.34 -- -- 7609 .01 .01 .02 .04 .17 .49 1.16 2.73 3.55

1956 -- -- .05 .07 .27 .51 1.23 -- -- 7610 .01 .01 .04 .10 .21 .69 1.50 3.18 4.31

1961 -- -- .04 .09 .36 .80 1.56 -- -- 7638 .03 .04 .10 .10 .30 .80 1.60 2.94 3.52

1963 .02 .03 .09 .10 .30 .80 1.67 3.46 4.23 7649 .02 .02 .07 .13 .39 .90 1.75 3.60 4.47

1982 .10 .10 .10 .10 .30 .60 1.20 2.40 2.70 7651 .10 .10 .10 .20 .40 1.10 2.03 4.43 6.90

2030 .02 .02 .08 .10 .28 .70 1.40 2.94 3.38 7735 .02 .03 .06 .13 .33 .87 1.85 3.54 4.15

2139 -- .04 .07 .14 .29 .76 1.74 2.57 -- 7736 .07 .09 .10 .20 .50 1.10 2.30 4.57 5.51

2203 .10 .10 .10 .20 .30 .80 1.70 3.96 4.66 7738 -- .02 .05 .15 .40 .96 1.76 3.72 --

2207 .05 .05 .10 .14 .38 .81 1.60 3.40 4.21 8072 .01 .02 .04 .09 .26 .61 1.15 2.42 2.56

2510 .03 .04 .08 .10 .30 .70 1.34 2.60 3.30 8078 .01 .01 .03 .06 .20 .41 .81 2.56 2.76

2625 .02 .02 .04 .07 .20 .51 1.22 2.76 4.02 8084 -- -- .07 .09 .23 .46 .88 -- --

2665 .02 .03 .07 .10 .30 .68 1.30 2.50 3.10 8085 .02 .03 .08 .10 .30 .60 1.20 2.22 2.86

2694 -- .03 .06 .20 .52 .97 2.32 4.05 -- 8187 .02 .02 .05 .10 .29 .65 1.63 3.07 3.21

2700 .03 .04 .10 .10 .21 .60 1.10 2.20 2.80 8358 -- -- .05 .09 .19 .38 1.07 -- --

3145 .02 .02 .04 .08 .20 .47 1.05 2.48 3.15 8501 .02 .02 .05 .10 .29 .75 1.40 2.72 3.67

3242 -- -- .09 .18 .35 .98 1.99 -- -- 8518 .02 .02 .05 .10 .22 .55 1.04 2.59 2.95

3288 -- .03 .07 .15 .30 .72 1.74 3.89 -- 8596 .07 .10 .10 .10 .30 .70 1.50 2.97 3.37

3374 .01 .02 .03 .06 .18 .48 .93 2.03 2.89 8788 .03 .04 .08 .18 .41 .85 1.51 2.80 4.34

4026 -- -- -- -- .00 -- -- -- -- 8816 -- -- -- -- .04 -- -- -- --

4028 .01 .02 .03 .06 .19 .55 1.60 2.79 3.72 9148 -- -- -- -- .41 -- -- -- --

4030 .10 .10 .10 .10 .40 .78 1.60 2.28 5.06 9153 -- .02 .04 .10 .19 .72 2.22 4.18 --

4089 .02 .03 .05 .10 .23 .65 1.40 3.28 4.30 9156 .02 .02 .10 .10 .30 .72 1.50 2.93 3.60

4112 .04 .05 .10 .10 .30 .70 1.40 3.21 4.20 9193 .10 .10 .10 .10 .30 .60 1.30 2.30 2.80

4306 .01 .02 .03 .06 .20 .62 1.20 2.16 2.72 9265 .02 .03 .10 .10 .29 .60 1.36 3.49 5.84

4850 .02 .02 .05 .10 .30 .67 1.42 2.84 3.90 9569 .10 .10 .10 .10 .30 .80 1.50 2.84 3.44

4856 .01 .02 .03 .07 .20 .50 1.51 2.80 3.12 9686 .02 .02 .04 .10 .20 .50 1.00 1.90 2.38
126 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–5.1. Empirical distribution of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in 

eastern New Mexico.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 1.00 1.00 1.00 1.00 2.00 6.00 11.00 20.00 25.00 4860 1.00 1.00 1.00 1.00 3.00 6.00 9.00 27.96 40.54

0205 1.00 1.00 1.00 1.00 3.00 6.00 10.00 18.00 23.79 4862 1.00 1.00 1.00 1.00 1.00 3.00 7.00 14.00 19.00

0208 1.00 1.00 1.00 2.00 3.00 5.00 9.00 21.96 27.12 5370 1.00 1.00 1.00 1.00 2.00 5.00 9.00 18.00 21.93

0404 1.00 1.00 1.00 1.00 1.00 4.00 8.50 25.60 31.15 5651 1.00 1.00 1.00 1.00 2.00 6.00 10.20 21.88 27.10

0407 1.00 1.00 1.00 1.00 1.00 4.00 7.00 16.00 20.09 5866 1.00 1.00 1.00 2.00 4.00 8.00 14.60 34.84 48.84

0600 1.00 1.00 1.00 1.00 2.00 5.00 8.00 17.00 23.00 6138 1.00 1.00 1.00 2.00 3.00 7.00 13.00 25.54 29.27

0606 -- 1.00 1.00 1.00 1.00 5.00 13.00 19.02 -- 6275 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.00 27.00

0646 1.00 1.00 1.00 1.00 2.00 7.00 12.00 22.00 26.58 6435 1.00 1.00 1.00 1.00 2.00 5.00 10.00 18.00 22.00

1120 1.00 1.00 1.00 1.00 2.00 6.00 11.50 23.00 30.00 6492 1.00 1.00 1.00 1.00 2.00 6.00 11.00 20.52 24.76

1440 1.00 1.00 1.00 1.00 1.00 4.00 8.00 16.00 21.00 6619 1.00 1.00 1.00 1.00 2.00 5.00 9.00 19.76 26.76

1446 1.00 1.00 1.00 2.00 3.00 6.00 10.00 20.06 27.53 6659 1.00 1.00 1.00 1.00 2.00 6.00 10.00 21.04 27.00

1469 1.00 1.00 1.00 1.00 2.00 5.00 9.00 20.00 25.00 6797 1.00 1.00 1.00 2.00 4.00 8.00 13.10 21.00 27.31

1475 -- 1.00 1.00 1.00 1.00 7.00 7.30 16.72 -- 6951 1.00 1.00 1.00 1.00 3.00 6.25 11.00 25.00 25.58

1480 -- -- -- -- 8.50 -- -- -- -- 7094 1.00 1.00 1.00 1.00 2.00 5.00 10.00 18.00 23.00

1515 1.00 1.00 1.00 1.00 2.00 5.00 9.00 17.00 21.00 7254 1.00 1.00 1.00 1.00 2.00 4.00 10.00 20.10 24.00

1807 1.00 1.00 1.00 2.00 3.00 7.00 10.00 18.28 21.23 7277 -- -- -- -- 6.00 -- -- -- --

1840 1.00 1.00 1.00 1.00 1.00 3.00 7.00 14.00 19.00 7279 1.00 1.00 1.00 1.00 1.00 4.00 7.00 17.00 22.00

1881 -- -- -- 1.50 3.00 7.50 -- -- -- 7283 1.00 1.00 1.00 1.00 2.00 5.00 11.00 19.00 25.62

1887 1.00 1.00 1.00 1.00 3.00 6.00 11.00 21.32 26.00 7604 -- -- -- 2.50 4.00 12.00 -- -- --

1939 1.00 1.00 1.00 1.00 2.00 5.00 10.00 18.00 24.00 7605 -- -- 1.00 1.00 1.00 4.00 5.80 -- --

1950 -- -- 1.00 2.00 3.00 5.75 14.40 -- -- 7609 1.00 1.00 1.00 1.00 2.00 5.00 11.00 25.16 34.16

1956 -- -- 1.00 1.25 3.50 7.75 11.20 -- -- 7610 1.00 1.00 1.00 1.00 2.00 5.00 10.00 23.60 29.00

1961 -- -- 1.00 1.00 5.00 10.00 11.60 -- -- 7638 1.00 1.00 1.00 1.00 2.00 5.00 9.00 19.00 25.00

1963 1.00 1.00 1.00 1.00 2.00 5.00 9.00 17.02 22.01 7649 1.00 1.00 1.00 1.00 3.00 6.00 12.00 23.00 28.00

1982 1.00 1.00 1.00 1.00 1.00 3.00 7.00 14.00 18.00 7651 1.00 1.00 1.00 1.00 2.00 4.00 8.60 18.00 21.46

2030 1.00 1.00 1.00 1.00 2.00 4.00 8.00 16.00 19.00 7735 1.00 1.00 1.00 2.00 4.00 8.00 14.10 26.00 32.51

2139 1.00 1.00 1.00 2.00 3.50 8.00 14.00 25.90 28.79 7736 1.00 1.00 1.00 1.00 2.00 5.00 11.00 21.16 27.00

2203 1.00 1.00 1.00 1.00 1.00 3.00 7.00 14.00 21.67 7738 1.00 1.00 1.00 2.00 3.00 8.00 14.00 26.04 33.12

2207 1.00 1.00 1.00 1.00 2.00 5.00 9.00 18.04 26.26 8072 1.00 1.00 1.00 2.00 3.00 7.00 12.00 21.00 25.00

2510 1.00 1.00 1.00 1.00 2.00 5.00 10.00 19.00 23.42 8078 1.00 1.00 1.00 1.00 3.00 7.00 11.00 18.00 20.76

2625 1.00 1.00 1.00 2.00 3.00 6.00 12.00 22.62 36.29 8084 -- 1.00 1.00 1.00 2.00 5.25 10.30 19.30 --

2665 1.00 1.00 1.00 1.00 3.00 6.00 12.00 24.00 31.00 8085 1.00 1.00 1.00 1.00 2.00 5.00 10.00 17.00 21.00

2694 1.00 1.00 1.00 2.00 4.00 9.00 15.00 28.98 30.98 8187 1.00 1.00 1.00 1.00 2.00 5.00 9.90 19.98 24.99

2700 1.00 1.00 1.00 1.00 1.00 4.00 9.00 17.00 21.00 8358 -- 1.00 1.00 1.00 3.00 5.50 10.20 31.64 --

3145 1.00 1.00 1.00 1.00 3.00 6.00 10.90 22.38 29.19 8501 1.00 1.00 1.00 1.00 2.00 5.00 10.00 19.00 25.00

3242 -- -- 1.00 4.00 7.50 14.50 21.10 -- -- 8518 1.00 1.00 1.00 1.00 2.00 5.00 9.70 19.00 23.00

3288 1.00 1.00 1.00 2.00 4.00 9.00 15.00 30.20 40.60 8596 1.00 1.00 1.00 1.00 1.00 3.00 7.00 15.00 19.00

3374 1.00 1.00 1.00 2.00 3.00 7.00 12.00 20.88 25.44 8788 1.00 1.00 1.00 2.00 4.00 8.00 15.70 31.00 37.67

4026 -- -- -- -- 1.00 -- -- -- -- 8816 -- -- -- -- 4.00 -- -- -- --

4028 1.00 1.00 1.00 1.00 2.00 5.00 8.00 17.00 20.17 9148 -- -- -- 2.25 8.50 13.00 -- -- --

4030 1.00 1.00 1.00 1.00 1.00 3.00 6.20 13.24 15.60 9153 1.00 1.00 1.00 1.00 1.00 7.00 11.20 21.04 37.06

4089 1.00 1.00 1.00 1.00 2.00 5.00 10.00 21.00 27.75 9156 1.00 1.00 1.00 1.00 2.00 5.00 9.00 17.00 21.67

4112 1.00 1.00 1.00 1.00 1.00 4.00 9.00 17.10 23.55 9193 1.00 1.00 1.00 1.00 1.00 3.00 7.00 13.36 17.36

4306 1.00 1.00 1.00 2.00 3.00 7.00 11.00 20.00 28.80 9265 1.00 1.00 1.00 1.00 1.00 3.00 7.00 15.12 19.00

4850 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.00 25.89 9569 1.00 1.00 1.00 1.00 1.00 3.00 7.00 14.00 17.00

4856 1.00 1.00 1.00 1.00 2.00 7.00 12.90 22.00 26.95 9686 1.00 1.00 1.00 1.00 2.00 5.00 10.00 18.00 22.00
Appendix 2 127

Appendix 2–5.2. Empirical distribution of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in 

eastern New Mexico.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 1.00 1.00 1.00 1.00 2.00 7.00 12.00 26.00 31.00 4860 1.00 1.00 1.00 1.00 3.00 6.00 10.20 32.64 44.10

0205 1.00 1.00 1.00 1.00 3.00 6.00 12.00 23.00 28.21 4862 1.00 1.00 1.00 1.00 1.00 4.00 9.00 18.00 21.00

0208 1.00 1.00 1.00 2.00 3.00 6.00 10.00 24.00 28.24 5370 1.00 1.00 1.00 1.00 2.00 5.00 10.00 21.00 29.00

0404 1.00 1.00 1.00 1.00 1.00 6.00 13.00 33.68 38.00 5651 1.00 1.00 1.00 1.00 2.00 6.00 13.00 24.86 37.20

0407 1.00 1.00 1.00 1.00 1.00 4.00 10.00 22.94 29.88 5866 1.00 1.00 1.00 2.00 4.00 9.00 16.00 42.86 58.56

0600 1.00 1.00 1.00 1.00 2.00 5.00 10.00 21.00 26.91 6138 1.00 1.00 1.00 2.00 4.00 8.25 15.00 28.10 36.00

0606 -- 1.00 1.00 1.00 1.00 5.00 13.90 19.14 -- 6275 1.00 1.00 1.00 1.00 3.00 7.00 13.00 26.00 33.00

0646 1.00 1.00 1.00 1.00 3.00 8.00 14.00 26.84 32.92 6435 1.00 1.00 1.00 1.00 2.00 6.00 11.00 20.00 29.00

1120 1.00 1.00 1.00 1.00 3.00 7.00 14.00 29.00 37.00 6492 1.00 1.00 1.00 1.00 2.00 7.00 13.00 26.64 32.00

1440 1.00 1.00 1.00 1.00 1.00 5.00 10.00 18.04 23.52 6619 1.00 1.00 1.00 1.00 2.00 5.00 11.00 23.12 27.12

1446 1.00 1.00 1.00 2.00 3.00 6.00 12.00 25.66 33.49 6659 1.00 1.00 1.00 1.00 3.00 6.00 11.00 25.00 34.00

1469 1.00 1.00 1.00 1.00 2.00 5.00 10.00 23.00 29.00 6797 1.00 1.00 1.00 2.00 4.00 8.50 14.00 28.08 32.08

1475 -- 1.00 1.00 1.00 1.00 7.00 7.30 16.72 -- 6951 1.00 1.00 1.00 1.00 3.00 7.00 12.30 26.72 35.01

1480 -- -- -- -- 12.00 -- -- -- -- 7094 1.00 1.00 1.00 1.00 2.00 6.00 12.00 23.00 27.00

1515 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 26.00 7254 1.00 1.00 1.00 1.00 2.00 5.00 11.00 23.00 27.00

1807 1.00 1.00 1.00 2.00 3.00 7.00 10.30 19.86 23.00 7277 -- -- -- -- 6.00 -- -- -- --

1840 1.00 1.00 1.00 1.00 1.00 3.00 9.00 19.96 26.92 7279 1.00 1.00 1.00 1.00 1.00 4.00 9.00 21.00 27.00

1881 -- -- -- 3.50 7.00 9.75 -- -- -- 7283 1.00 1.00 1.00 1.00 2.00 6.00 12.00 26.00 32.35

1887 1.00 1.00 1.00 1.00 3.00 7.00 12.00 24.28 30.64 7604 -- -- -- 2.50 4.00 12.00 -- -- --

1939 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.00 30.00 7605 -- -- 1.00 1.00 1.00 4.25 6.80 -- --

1950 -- -- 1.10 2.00 3.00 8.50 18.40 -- -- 7609 1.00 1.00 1.00 1.00 2.00 6.00 13.00 29.38 40.00

1956 -- -- 1.00 1.50 4.00 8.00 11.00 -- -- 7610 1.00 1.00 1.00 1.00 2.00 6.00 12.00 26.00 33.00

1961 -- -- 1.00 1.00 5.00 9.00 12.60 -- -- 7638 1.00 1.00 1.00 1.00 2.00 6.00 11.00 23.00 28.20

1963 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.00 27.40 7649 1.00 1.00 1.00 1.00 3.00 7.00 14.00 28.00 35.90

1982 1.00 1.00 1.00 1.00 1.00 4.00 8.00 18.00 21.43 7651 1.00 1.00 1.00 1.00 2.00 6.00 11.00 25.00 32.00

2030 1.00 1.00 1.00 1.00 2.00 5.00 10.00 19.00 23.00 7735 1.00 1.00 1.00 2.00 4.00 9.00 16.00 31.00 37.86

2139 1.00 1.00 1.00 2.00 4.00 8.75 15.00 27.66 28.83 7736 1.00 1.00 1.00 1.00 2.00 7.00 13.00 26.00 34.00

2203 1.00 1.00 1.00 1.00 1.00 4.00 9.00 18.00 25.28 7738 1.00 1.00 1.00 2.00 4.00 9.00 14.80 29.40 38.98

2207 1.00 1.00 1.00 1.00 2.00 6.00 11.00 26.00 30.00 8072 1.00 1.00 1.00 2.00 3.00 8.00 14.00 25.00 29.50

2510 1.00 1.00 1.00 1.00 2.00 6.00 12.00 24.00 33.00 8078 1.00 1.00 1.00 1.00 3.00 7.00 13.00 21.14 24.28

2625 1.00 1.00 1.00 2.00 3.00 6.00 14.00 29.16 40.16 8084 -- 1.00 1.00 1.00 3.00 6.00 13.80 19.60 --

2665 1.00 1.00 1.00 1.00 3.00 7.00 14.00 28.12 36.06 8085 1.00 1.00 1.00 1.00 2.00 7.00 13.00 23.00 29.00

2694 1.00 1.00 1.00 2.00 5.00 11.00 20.00 34.50 57.25 8187 1.00 1.00 1.00 1.00 2.00 5.00 12.00 22.88 27.44

2700 1.00 1.00 1.00 1.00 1.00 5.00 10.00 21.00 27.00 8358 -- 1.00 1.00 1.00 3.00 6.00 12.90 35.58 --

3145 1.00 1.00 1.00 1.00 3.00 7.00 13.00 27.92 39.73 8501 1.00 1.00 1.00 1.00 2.00 6.00 12.00 23.00 29.00

3242 -- -- 1.00 4.00 8.00 15.00 21.20 -- -- 8518 1.00 1.00 1.00 1.00 2.00 6.00 11.30 22.00 27.63

3288 1.00 1.00 1.00 2.00 4.50 10.25 17.10 31.92 40.82 8596 1.00 1.00 1.00 1.00 1.00 4.00 8.00 19.00 26.27

3374 1.00 1.00 1.00 2.00 3.00 8.00 13.00 25.00 29.10 8788 1.00 1.00 1.00 2.00 4.00 9.00 18.00 36.38 40.00

4026 -- -- -- -- 1.00 -- -- -- -- 8816 -- -- -- -- 4.00 -- -- -- --

4028 1.00 1.00 1.00 1.00 2.00 6.00 9.00 19.04 22.51 9148 -- -- -- 1.00 9.00 17.00 -- -- --

4030 1.00 1.00 1.00 1.00 1.00 3.00 8.00 14.40 16.00 9153 1.00 1.00 1.00 1.00 1.00 7.00 13.00 21.16 37.24

4089 1.00 1.00 1.00 1.00 2.00 6.00 12.00 27.00 31.00 9156 1.00 1.00 1.00 1.00 2.00 5.00 11.00 21.00 26.67

4112 1.00 1.00 1.00 1.00 1.00 5.00 10.00 22.00 28.00 9193 1.00 1.00 1.00 1.00 1.00 4.00 9.00 19.00 22.00

4306 1.00 1.00 1.00 2.00 3.00 7.00 11.00 24.96 30.96 9265 1.00 1.00 1.00 1.00 1.00 4.00 9.00 20.84 25.84

4850 1.00 1.00 1.00 1.00 2.00 6.00 12.00 24.00 31.64 9569 1.00 1.00 1.00 1.00 1.00 4.00 8.00 17.00 19.30

4856 1.00 1.00 1.00 1.00 3.00 8.00 13.00 24.00 29.75 9686 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 26.00
128 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–5.3. Empirical distribution of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in 

eastern New Mexico.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 1.00 1.00 1.00 1.00 3.00 8.00 16.00 33.00 42.25 4860 1.00 1.00 1.00 1.00 3.00 7.00 13.10 39.66 78.56

0205 1.00 1.00 1.00 1.00 3.00 7.00 15.00 28.00 33.75 4862 1.00 1.00 1.00 1.00 1.00 6.00 12.00 24.00 32.58

0208 1.00 1.00 1.00 2.00 3.00 7.50 14.20 30.72 37.72 5370 1.00 1.00 1.00 1.00 2.00 6.00 13.50 30.00 39.35

0404 1.00 1.00 1.00 1.00 2.00 10.50 17.00 38.00 49.90 5651 1.00 1.00 1.00 1.00 3.00 7.50 14.20 33.68 53.76

0407 1.00 1.00 1.00 1.00 1.00 7.00 15.00 33.04 38.00 5866 1.00 1.00 1.00 2.00 5.50 12.00 19.50 46.00 60.00

0600 1.00 1.00 1.00 1.00 2.00 6.00 13.50 26.00 36.35 6138 1.00 1.00 1.00 2.00 4.00 10.00 19.00 40.00 52.04

0606 -- 1.00 1.00 1.00 1.00 4.50 16.60 44.52 -- 6275 1.00 1.00 1.00 1.00 3.00 9.00 17.00 36.00 46.00

0646 1.00 1.00 1.00 1.00 3.00 9.00 16.00 40.36 43.18 6435 1.00 1.00 1.00 1.00 2.00 7.00 15.00 29.00 35.00

1120 1.00 1.00 1.00 1.00 3.00 9.00 19.00 38.92 47.46 6492 1.00 1.00 1.00 1.00 2.00 8.00 17.00 32.42 37.35

1440 1.00 1.00 1.00 1.00 2.00 6.00 13.00 28.00 36.00 6619 1.00 1.00 1.00 1.00 2.00 6.00 13.00 25.54 31.08

1446 1.00 1.00 1.00 2.00 3.00 7.00 15.00 38.70 45.70 6659 1.00 1.00 1.00 1.00 3.00 7.00 15.00 34.00 45.00

1469 1.00 1.00 1.00 1.00 2.00 6.00 13.00 31.92 41.92 6797 1.00 1.00 1.00 2.00 4.00 9.25 19.90 35.56 48.45

1475 -- 1.00 1.00 1.00 1.00 7.00 13.00 48.76 -- 6951 1.00 1.00 1.00 1.00 3.00 8.00 15.00 32.50 38.10

1480 -- -- -- -- 12.00 -- -- -- -- 7094 1.00 1.00 1.00 1.00 3.00 8.00 16.00 30.00 37.00

1515 1.00 1.00 1.00 1.00 3.00 7.00 14.00 27.00 34.00 7254 1.00 1.00 1.00 1.00 2.00 7.00 14.00 30.00 35.00

1807 1.00 1.00 1.00 2.00 3.00 7.00 12.90 23.00 26.49 7277 -- -- -- -- 6.00 -- -- -- --

1840 1.00 1.00 1.00 1.00 1.00 5.00 12.00 26.84 29.00 7279 1.00 1.00 1.00 1.00 2.00 5.00 13.00 27.42 32.00

1881 -- -- -- -- 13.00 -- -- -- -- 7283 1.00 1.00 1.00 1.00 3.00 8.00 14.30 33.00 39.86

1887 1.00 1.00 1.00 1.00 3.00 8.00 15.00 30.00 36.44 7604 -- -- -- 2.50 4.00 12.00 -- -- --

1939 1.00 1.00 1.00 1.00 3.00 7.00 15.00 31.00 38.74 7605 -- -- 1.00 1.00 2.00 5.00 15.70 -- --

1950 -- -- 1.00 2.00 3.00 13.00 25.60 -- -- 7609 1.00 1.00 1.00 1.00 3.00 7.00 16.00 38.00 46.40

1956 -- -- 1.00 1.25 4.00 8.00 12.00 -- -- 7610 1.00 1.00 1.00 1.00 2.00 7.75 15.00 30.62 48.62

1961 -- -- 1.00 2.00 5.00 10.00 21.00 -- -- 7638 1.00 1.00 1.00 1.00 2.00 7.00 14.00 31.00 37.09

1963 1.00 1.00 1.00 1.00 2.00 7.00 13.00 29.00 38.18 7649 1.00 1.00 1.00 1.00 3.00 9.00 19.00 39.00 45.00

1982 1.00 1.00 1.00 1.00 1.00 5.00 13.00 25.76 31.00 7651 1.00 1.00 1.00 1.00 2.00 7.00 17.00 36.38 48.23

2030 1.00 1.00 1.00 1.00 2.00 5.00 12.00 25.00 30.00 7735 1.00 1.00 1.00 2.00 4.00 11.00 22.00 40.00 48.85

2139 1.00 1.00 1.00 2.00 5.00 11.50 19.90 33.30 34.93 7736 1.00 1.00 1.00 1.00 3.00 9.00 19.00 37.00 44.08

2203 1.00 1.00 1.00 1.00 2.00 6.00 13.00 27.58 44.85 7738 1.00 1.00 1.00 2.00 4.00 10.00 21.10 49.96 65.72

2207 1.00 1.00 1.00 1.00 2.00 6.00 14.00 30.00 43.36 8072 1.00 1.00 1.00 2.00 4.00 10.00 18.00 34.00 38.00

2510 1.00 1.00 1.00 1.00 3.00 7.00 15.00 31.34 39.00 8078 1.00 1.00 1.00 1.00 3.00 9.00 17.00 27.10 35.70

2625 1.00 1.00 1.00 2.00 3.00 8.00 17.90 36.12 49.00 8084 -- 1.00 1.00 1.00 3.00 6.00 13.80 19.60 --

2665 1.00 1.00 1.00 1.00 3.00 9.00 18.00 36.00 42.00 8085 1.00 1.00 1.00 1.00 3.00 9.00 16.00 31.32 37.66

2694 1.00 1.00 1.00 2.00 6.00 14.00 28.40 50.52 57.44 8187 1.00 1.00 1.00 1.00 2.00 5.50 14.00 30.92 36.38

2700 1.00 1.00 1.00 1.00 2.00 6.00 14.00 29.00 36.00 8358 -- 1.00 1.00 1.00 3.00 6.00 15.20 35.64 --

3145 1.00 1.00 1.00 1.00 3.00 7.00 16.00 39.46 45.46 8501 1.00 1.00 1.00 1.00 3.00 7.00 15.00 30.00 34.46

3242 -- -- 1.00 4.00 8.00 15.00 21.20 -- -- 8518 1.00 1.00 1.00 1.00 3.00 7.00 15.00 29.50 35.00

3288 1.00 1.00 1.00 2.00 4.00 12.00 26.00 50.42 59.27 8596 1.00 1.00 1.00 1.00 1.00 5.00 11.00 29.00 33.90

3374 1.00 1.00 1.00 2.00 4.00 9.00 17.00 33.00 38.82 8788 1.00 1.00 1.00 2.00 4.00 11.00 22.10 40.00 46.71

4026 -- -- -- -- 1.00 -- -- -- -- 8816 -- -- -- -- 4.00 -- -- -- --

4028 1.00 1.00 1.00 1.00 2.00 6.00 12.00 23.00 34.35 9148 -- -- -- 1.00 9.00 17.00 -- -- --

4030 1.00 1.00 1.00 1.00 1.00 4.00 12.00 20.00 21.00 9153 1.00 1.00 1.00 1.00 1.00 7.00 13.00 40.72 62.44

4089 1.00 1.00 1.00 1.00 2.00 8.00 16.00 34.00 49.04 9156 1.00 1.00 1.00 1.00 2.00 6.00 13.00 27.00 34.00

4112 1.00 1.00 1.00 1.00 2.00 6.00 13.00 29.00 37.42 9193 1.00 1.00 1.00 1.00 1.00 6.00 13.00 24.24 31.62

4306 1.00 1.00 1.00 2.00 3.00 8.00 14.00 29.00 36.33 9265 1.00 1.00 1.00 1.00 1.00 4.75 11.10 25.62 35.17

4850 1.00 1.00 1.00 1.00 3.00 8.00 16.00 32.00 37.00 9569 1.00 1.00 1.00 1.00 1.00 5.00 11.00 22.30 25.65

4856 1.00 1.00 1.00 1.00 3.00 9.00 18.00 30.94 35.00 9686 1.00 1.00 1.00 1.00 2.00 7.00 14.00 28.40 34.70
Appendix 2 129

Appendix 2–5.4. Empirical distribution of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in 

eastern New Mexico.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 1.00 1.00 1.00 1.00 3.00 11.00 22.00 45.00 59.72 4860 1.00 1.00 1.00 1.00 4.00 9.00 23.60 65.60 85.92

0205 1.00 1.00 1.00 1.00 3.00 9.00 19.00 39.20 50.30 4862 1.00 1.00 1.00 1.00 2.00 9.00 21.80 42.00 49.16

0208 1.00 1.00 1.00 2.00 3.00 9.00 21.40 39.04 47.72 5370 1.00 1.00 1.00 1.00 3.00 8.00 19.00 40.10 55.00

0404 1.00 1.00 1.00 1.00 3.00 14.00 23.00 47.94 54.91 5651 1.00 1.00 1.00 1.00 3.00 9.00 20.20 43.04 69.04

0407 1.00 1.00 1.00 1.00 2.00 15.00 28.50 49.90 62.80 5866 1.00 1.00 1.00 2.00 5.00 13.50 26.20 81.56 91.44

0600 1.00 1.00 1.00 1.00 2.00 9.00 19.00 36.00 42.00 6138 1.00 1.00 1.00 2.00 4.00 14.00 27.00 52.98 59.97

0606 -- 1.00 1.00 1.00 1.00 7.00 19.40 44.56 -- 6275 1.00 1.00 1.00 2.00 4.00 14.00 26.00 50.00 58.00

0646 1.00 1.00 1.00 1.00 3.00 10.00 26.00 49.40 54.60 6435 1.00 1.00 1.00 1.00 3.00 10.00 20.00 37.00 47.06

1120 1.00 1.00 1.00 1.00 4.00 15.00 28.00 54.98 68.00 6492 1.00 1.00 1.00 1.00 2.00 12.00 25.00 37.44 42.66

1440 1.00 1.00 1.00 1.00 2.00 10.00 20.30 40.66 49.33 6619 1.00 1.00 1.00 1.00 2.00 7.00 17.00 41.42 57.44

1446 1.00 1.00 1.00 2.00 3.00 8.00 21.00 46.08 59.08 6659 1.00 1.00 1.00 1.00 3.00 9.00 20.00 42.46 63.46

1469 1.00 1.00 1.00 1.00 3.00 8.00 19.00 38.40 48.20 6797 1.00 1.00 1.00 2.00 4.00 12.00 26.00 48.42 54.21

1475 -- 1.00 1.00 1.00 1.00 7.00 21.40 73.96 -- 6951 1.00 1.00 1.00 1.00 4.00 10.00 20.00 45.40 56.00

1480 -- -- -- -- 12.00 -- -- -- -- 7094 1.00 1.00 1.00 1.00 3.00 12.00 23.00 43.00 50.31

1515 1.00 1.00 1.00 1.00 3.00 10.00 20.00 42.00 52.87 7254 1.00 1.00 1.00 1.00 2.00 10.00 20.00 39.00 46.76

1807 1.00 1.00 1.00 2.00 3.00 8.75 19.00 27.00 41.75 7277 -- -- -- -- 6.00 -- -- -- --

1840 1.00 1.00 1.00 1.00 1.00 6.00 17.00 31.50 42.75 7279 1.00 1.00 1.00 1.00 2.00 8.00 20.00 37.00 48.00

1881 -- -- -- -- 13.00 -- -- -- -- 7283 1.00 1.00 1.00 1.00 3.00 11.00 24.00 49.56 59.34

1887 1.00 1.00 1.00 1.00 3.00 10.00 22.00 40.00 50.00 7604 -- -- -- 4.00 16.00 27.25 -- -- --

1939 1.00 1.00 1.00 1.00 3.00 9.00 21.00 41.00 54.47 7605 -- -- 1.00 1.00 3.00 13.00 25.00 -- --

1950 -- -- 1.00 2.00 3.00 13.00 25.60 -- -- 7609 1.00 1.00 1.00 1.00 3.00 10.50 24.00 46.00 55.00

1956 -- -- 1.00 2.00 4.00 9.00 27.40 -- -- 7610 1.00 1.00 1.00 1.00 3.00 10.00 22.00 44.62 61.55

1961 -- -- 1.00 2.00 5.00 11.00 29.20 -- -- 7638 1.00 1.00 1.00 1.00 3.00 9.50 22.00 44.00 52.50

1963 1.00 1.00 1.00 1.00 3.00 9.00 20.00 43.00 55.38 7649 1.00 1.00 1.00 1.00 4.00 14.00 26.00 51.00 61.05

1982 1.00 1.00 1.00 1.00 1.00 8.00 20.00 34.74 40.37 7651 1.00 1.00 1.00 1.00 3.00 13.00 26.00 50.50 64.75

2030 1.00 1.00 1.00 1.00 2.00 7.00 18.00 37.00 47.00 7735 1.00 1.00 1.00 2.00 5.00 17.00 30.00 60.00 73.00

2139 -- 1.00 1.00 2.00 5.00 14.00 28.40 56.88 -- 7736 1.00 1.00 1.00 1.00 3.00 15.00 26.00 47.68 60.17

2203 1.00 1.00 1.00 1.00 2.00 9.00 20.00 36.64 55.41 7738 1.00 1.00 1.00 2.00 5.00 16.50 30.70 89.10 110.55

2207 1.00 1.00 1.00 1.00 3.00 9.00 24.00 45.26 62.13 8072 1.00 1.00 1.00 2.00 5.00 14.00 25.00 46.56 61.14

2510 1.00 1.00 1.00 1.00 3.00 10.00 23.00 45.00 54.89 8078 1.00 1.00 1.00 1.00 3.00 12.75 23.10 42.84 61.39

2625 1.00 1.00 1.00 2.00 3.00 10.00 20.30 41.26 63.15 8084 -- 1.00 1.00 1.00 3.00 6.00 17.60 47.72 --

2665 1.00 1.00 1.00 1.00 4.00 13.00 24.00 44.86 56.00 8085 1.00 1.00 1.00 1.00 3.00 13.00 24.00 41.00 50.42

2694 1.00 1.00 1.00 2.50 7.00 22.50 36.00 57.24 69.16 8187 1.00 1.00 1.00 1.00 2.00 6.00 19.00 38.80 51.40

2700 1.00 1.00 1.00 1.00 2.00 9.00 21.00 43.36 51.00 8358 -- 1.00 1.00 1.00 3.00 8.25 25.40 35.74 --

3145 1.00 1.00 1.00 1.00 3.00 9.00 21.00 45.00 56.28 8501 1.00 1.00 1.00 1.00 3.00 9.00 21.00 40.00 48.00

3242 -- -- 2.10 4.50 9.50 26.50 44.90 -- -- 8518 1.00 1.00 1.00 1.00 3.00 10.00 22.00 40.00 52.27

3288 1.00 1.00 1.00 2.00 5.00 14.50 33.00 57.28 63.07 8596 1.00 1.00 1.00 1.00 2.00 7.00 17.00 35.00 44.00

3374 1.00 1.00 1.00 2.00 4.00 13.00 25.00 43.72 50.00 8788 1.00 1.00 1.00 2.00 5.00 18.00 33.00 55.00 67.95

4026 -- -- -- -- 1.00 -- -- -- -- 8816 -- -- -- -- 4.00 -- -- -- --

4028 1.00 1.00 1.00 1.00 3.00 7.00 17.00 34.00 40.20 9148 -- -- -- 6.25 9.50 23.00 -- -- --

4030 1.00 1.00 1.00 1.00 2.00 8.00 18.70 41.98 44.47 9153 1.00 1.00 1.00 1.00 1.00 13.00 25.00 48.04 65.56

4089 1.00 1.00 1.00 1.00 3.00 11.00 24.00 47.00 64.00 9156 1.00 1.00 1.00 1.00 2.00 8.00 19.00 37.68 44.00

4112 1.00 1.00 1.00 1.00 2.00 9.00 19.50 40.10 54.15 9193 1.00 1.00 1.00 1.00 2.00 9.00 20.00 35.40 46.40

4306 1.00 1.00 1.00 2.00 3.00 9.00 23.00 46.64 56.46 9265 1.00 1.00 1.00 1.00 1.00 7.00 17.00 40.00 44.83

4850 1.00 1.00 1.00 1.00 3.00 10.00 24.00 40.00 50.18 9569 1.00 1.00 1.00 1.00 1.00 7.00 16.00 28.00 38.00

4856 1.00 1.00 1.00 1.00 3.00 12.00 23.00 44.52 78.56 9686 1.00 1.00 1.00 1.00 3.00 9.00 19.00 38.78 45.89
130 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–5.5. Empirical distribution of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in 

eastern New Mexico.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 1.00 1.00 1.00 1.00 4.00 15.00 29.00 54.02 70.68 4860 -- 1.00 1.00 2.00 6.00 20.00 31.40 90.68 --

0205 1.00 1.00 1.00 2.00 3.00 12.00 25.00 51.00 59.70 4862 1.00 1.00 1.00 1.00 3.00 18.00 32.00 66.00 89.00

0208 1.00 1.00 1.00 2.00 4.00 16.00 30.00 65.36 90.26 5370 1.00 1.00 1.00 1.00 3.00 12.00 26.00 53.00 72.50

0404 1.00 1.00 1.00 1.00 7.00 19.00 34.90 69.46 84.58 5651 1.00 1.00 1.00 1.00 3.00 10.25 24.70 45.64 69.14

0407 1.00 1.00 1.00 1.00 5.00 25.00 45.20 76.32 84.44 5866 -- 1.00 1.00 3.00 10.00 25.00 43.20 105.84 --

0600 1.00 1.00 1.00 1.00 3.00 12.00 24.00 46.50 56.00 6138 1.00 1.00 1.00 2.00 6.00 20.00 39.00 76.26 100.13

0606 -- 1.00 1.00 1.00 1.00 17.00 44.00 73.80 -- 6275 1.00 1.00 1.00 2.00 6.00 21.00 39.00 75.00 92.56

0646 1.00 1.00 1.00 1.00 5.00 18.25 33.90 58.36 72.00 6435 1.00 1.00 1.00 1.00 3.00 14.00 26.80 57.00 68.56

1120 1.00 1.00 1.00 1.00 6.00 23.00 43.00 80.00 100.40 6492 1.00 1.00 1.00 1.00 3.00 17.00 32.00 61.80 71.40

1440 1.00 1.00 1.00 1.00 4.00 16.00 32.00 70.00 75.06 6619 1.00 1.00 1.00 1.00 3.00 12.50 26.00 61.80 79.70

1446 1.00 1.00 1.00 2.00 3.00 11.00 27.40 52.28 60.14 6659 1.00 1.00 1.00 1.00 3.00 12.00 26.00 58.80 76.30

1469 1.00 1.00 1.00 1.00 3.00 12.00 25.00 49.00 59.28 6797 1.00 1.00 1.00 2.00 6.00 21.25 32.00 76.38 85.59

1475 -- 1.00 1.00 1.00 1.00 7.00 28.60 75.64 -- 6951 1.00 1.00 1.00 1.00 4.00 11.00 26.40 58.72 63.52

1480 -- -- -- -- 12.00 -- -- -- -- 7094 1.00 1.00 1.00 1.00 4.00 17.00 29.00 53.00 65.00

1515 1.00 1.00 1.00 1.00 4.00 15.00 28.00 58.22 71.00 7254 1.00 1.00 1.00 1.00 3.00 14.00 28.00 53.98 63.99

1807 1.00 1.00 1.00 2.00 3.00 10.00 23.00 49.36 53.34 7277 -- -- -- -- 6.00 -- -- -- --

1840 1.00 1.00 1.00 1.00 2.00 12.00 26.00 52.70 64.80 7279 1.00 1.00 1.00 1.00 3.00 15.00 28.00 52.12 64.68

1881 -- -- -- -- 13.00 -- -- -- -- 7283 1.00 1.00 1.00 2.00 5.00 23.00 47.00 86.80 98.90

1887 1.00 1.00 1.00 2.00 5.00 17.00 31.00 60.00 72.65 7604 -- -- -- 4.00 16.00 27.25 -- -- --

1939 1.00 1.00 1.00 1.00 4.00 13.00 28.00 56.00 72.25 7605 -- -- 1.00 1.00 3.00 25.75 38.90 -- --

1950 -- -- 1.00 2.00 4.00 13.25 25.90 -- -- 7609 1.00 1.00 1.00 1.00 4.00 16.00 33.00 64.88 76.08

1956 -- -- 1.00 2.00 4.50 10.25 28.80 -- -- 7610 1.00 1.00 1.00 1.00 3.00 15.00 30.00 61.14 76.33

1961 -- -- 1.00 2.00 5.00 11.00 29.20 -- -- 7638 1.00 1.00 1.00 1.00 4.00 17.50 32.00 60.00 72.00

1963 1.00 1.00 1.00 1.00 3.00 14.00 29.00 60.00 74.28 7649 1.00 1.00 1.00 2.00 6.00 23.00 40.00 75.00 96.80

1982 1.00 1.00 1.00 1.00 1.00 15.00 26.60 51.00 63.66 7651 1.00 1.00 1.00 1.00 4.00 22.00 42.60 88.92 96.60

2030 1.00 1.00 1.00 1.00 3.00 12.00 26.00 50.14 60.07 7735 1.00 1.00 1.00 2.00 7.00 24.00 45.00 87.44 109.08

2139 -- 1.00 1.00 2.00 6.00 22.00 42.70 95.38 -- 7736 1.00 1.00 1.00 1.00 6.00 23.00 40.00 74.00 92.30

2203 1.00 1.00 1.00 1.00 3.00 13.00 25.10 55.62 67.53 7738 1.00 1.00 1.00 2.00 9.00 24.75 40.00 109.50 177.00

2207 1.00 1.00 1.00 1.00 4.00 18.00 30.00 54.16 74.55 8072 1.00 1.00 1.00 2.00 7.00 21.00 35.00 70.10 79.55

2510 1.00 1.00 1.00 1.00 4.00 17.50 33.00 58.00 71.00 8078 1.00 1.00 1.00 1.00 4.00 18.00 29.00 54.98 66.97

2625 1.00 1.00 1.00 2.00 4.00 14.00 26.00 59.40 65.90 8084 -- 1.00 1.00 1.00 3.00 9.50 27.20 48.36 --

2665 1.00 1.00 1.00 2.00 5.00 19.00 33.00 61.44 73.00 8085 1.00 1.00 1.00 1.00 5.00 19.00 32.00 60.52 68.00

2694 1.00 1.00 1.00 4.00 17.00 30.00 52.80 134.04 157.74 8187 1.00 1.00 1.00 1.00 4.00 17.25 30.00 62.74 82.25

2700 1.00 1.00 1.00 1.00 3.00 17.00 32.00 62.00 73.00 8358 -- 1.00 1.00 1.00 3.00 8.75 27.80 46.78 --

3145 1.00 1.00 1.00 1.50 3.00 11.50 26.00 53.40 67.20 8501 1.00 1.00 1.00 1.00 4.00 16.00 30.00 58.92 69.00

3242 -- -- 2.00 4.00 9.00 25.00 67.00 -- -- 8518 1.00 1.00 1.00 1.00 4.00 16.00 30.00 56.00 66.28

3288 1.00 1.00 1.00 2.00 8.00 25.00 38.20 92.44 139.12 8596 1.00 1.00 1.00 1.00 2.00 10.50 24.00 50.00 60.00

3374 1.00 1.00 1.00 2.00 5.00 18.00 31.00 58.68 71.67 8788 1.00 1.00 1.00 2.00 9.00 26.00 45.00 77.06 89.12

4026 -- -- -- -- .00 -- -- -- -- 8816 -- -- -- -- 4.00 -- -- -- --

4028 1.00 1.00 1.00 1.00 3.00 8.00 24.00 39.12 49.51 9148 -- -- -- 4.50 9.00 44.00 -- -- --

4030 1.00 1.00 1.00 1.00 2.00 9.00 20.00 43.04 44.52 9153 -- 1.00 1.00 1.00 1.00 13.00 31.60 79.36 --

4089 1.00 1.00 1.00 1.00 4.00 15.75 30.00 72.00 89.00 9156 1.00 1.00 1.00 1.00 3.00 13.00 27.00 52.00 70.04

4112 1.00 1.00 1.00 1.00 2.00 12.00 25.00 59.08 74.08 9193 1.00 1.00 1.00 1.00 2.00 13.75 26.70 54.28 68.07

4306 1.00 1.00 1.00 2.00 4.00 14.00 29.00 58.36 70.00 9265 1.00 1.00 1.00 1.00 2.00 12.00 25.00 47.04 61.30

4850 1.00 1.00 1.00 1.00 4.00 20.00 34.00 70.74 85.58 9569 1.00 1.00 1.00 1.00 2.00 11.00 24.00 49.00 54.00

4856 1.00 1.00 1.00 1.00 4.00 16.00 31.00 69.56 92.72 9686 1.00 1.00 1.00 1.00 3.00 13.00 26.00 50.00 58.00
Appendix 2 131

Appendix 2–5.6. Empirical distribution of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in 

eastern New Mexico.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 1.00 1.00 1.00 1.00 7.00 26.00 55.00 113.96 134.96 4860 -- 1.00 1.00 2.00 7.00 28.50 75.60 219.04 --

0205 1.00 1.00 1.00 2.00 5.00 24.00 52.70 100.00 115.02 4862 1.00 1.00 1.00 1.00 9.00 35.00 69.00 142.24 152.42

0208 1.00 1.00 1.00 2.00 7.00 28.75 52.60 122.38 171.46 5370 1.00 1.00 1.00 1.00 4.00 23.00 51.40 92.48 108.74

0404 1.00 1.00 1.00 1.00 13.00 38.50 81.00 171.30 201.25 5651 1.00 1.00 1.00 1.25 3.00 14.00 34.00 70.34 87.75

0407 1.00 1.00 1.00 1.00 22.00 48.00 106.10 191.18 205.06 5866 -- 1.00 3.00 9.00 20.50 65.00 101.30 174.58 --

0600 1.00 1.00 1.00 1.00 5.00 21.00 46.00 84.28 102.00 6138 1.00 1.00 1.00 3.00 13.00 44.75 77.00 145.00 174.73

0606 -- -- 1.00 1.00 1.00 34.00 84.20 -- -- 6275 1.00 1.00 1.00 2.00 13.00 40.00 76.00 182.00 225.60

0646 1.00 1.00 1.00 1.00 8.00 30.00 58.00 116.20 172.80 6435 1.00 1.00 1.00 1.00 5.00 23.00 52.00 107.10 123.62

1120 1.00 1.00 1.00 2.00 15.00 48.00 93.60 186.64 224.76 6492 1.00 1.00 1.00 1.00 7.00 28.00 50.80 110.20 124.20

1440 1.00 1.00 1.00 1.00 8.00 30.00 69.20 143.32 170.64 6619 1.00 1.00 1.00 1.00 4.00 25.00 57.00 104.78 144.39

1446 1.00 1.00 1.00 2.00 4.00 21.00 48.00 98.40 110.35 6659 1.00 1.00 1.00 2.00 6.00 25.00 52.00 88.00 115.35

1469 1.00 1.00 1.00 1.00 4.00 22.00 47.00 88.56 102.40 6797 1.00 1.00 1.00 3.00 12.00 32.00 68.00 182.60 219.40

1475 -- -- 1.00 1.00 1.00 11.50 37.00 -- -- 6951 1.00 1.00 1.00 1.75 6.00 24.25 56.00 142.16 190.55

1480 -- -- -- -- 12.00 -- -- -- -- 7094 1.00 1.00 1.00 2.00 9.00 31.00 65.00 119.82 139.41

1515 1.00 1.00 1.00 2.00 7.00 29.00 58.00 121.00 161.00 7254 1.00 1.00 1.00 1.00 5.00 25.75 52.50 101.50 117.75

1807 1.00 1.00 1.00 2.00 4.00 19.00 45.00 71.20 92.40 7277 -- -- -- -- 6.00 -- -- -- --

1840 1.00 1.00 1.00 1.00 4.00 26.00 61.00 106.00 114.40 7279 1.00 1.00 1.00 1.00 6.00 30.00 61.60 124.00 145.84

1881 -- -- -- -- 119.00 -- -- -- -- 7283 1.00 1.00 1.00 2.00 12.00 49.00 85.80 168.44 218.06

1887 1.00 1.00 1.00 2.00 8.00 34.00 69.00 132.70 162.45 7604 -- -- -- -- 19.00 -- -- -- --

1939 1.00 1.00 1.00 2.00 6.00 27.00 55.00 111.62 131.62 7605 -- -- 1.00 1.00 3.50 30.50 57.40 -- --

1950 -- -- 1.00 2.00 8.00 25.00 46.60 -- -- 7609 1.00 1.00 1.00 2.00 6.00 31.00 62.00 112.70 131.95

1956 -- -- 1.00 2.00 8.00 28.00 51.60 -- -- 7610 1.00 1.00 1.00 1.00 6.00 26.00 51.00 98.34 128.04

1961 -- -- 1.00 2.00 9.50 29.75 45.90 -- -- 7638 1.00 1.00 1.00 1.00 8.00 33.00 61.00 119.10 140.05

1963 1.00 1.00 1.00 1.00 6.00 29.00 57.60 106.00 135.12 7649 1.00 1.00 1.00 2.00 15.00 47.00 91.80 170.00 214.18

1982 1.00 1.00 1.00 1.00 5.00 30.00 54.30 104.06 126.18 7651 1.00 1.00 1.00 1.00 13.00 49.00 92.00 185.96 198.00

2030 1.00 1.00 1.00 1.00 5.00 27.00 52.00 99.00 126.00 7735 1.00 1.00 1.00 3.00 13.00 42.00 81.40 171.12 214.14

2139 -- 1.00 1.00 3.00 13.00 39.75 81.60 252.46 -- 7736 1.00 1.00 1.00 2.00 15.00 43.00 90.00 164.40 221.00

2203 1.00 1.00 1.00 1.00 6.00 26.00 52.00 96.38 117.00 7738 1.00 1.00 1.00 2.00 10.00 36.75 69.40 121.10 190.25

2207 1.00 1.00 1.00 1.00 4.00 29.75 61.10 122.22 136.88 8072 1.00 1.00 1.00 3.00 11.50 36.00 74.30 130.78 150.00

2510 1.00 1.00 1.00 1.00 7.00 31.00 62.00 112.00 143.32 8078 1.00 1.00 1.00 2.00 7.00 26.25 62.50 98.90 108.40

2625 1.00 1.00 1.00 2.00 5.00 23.00 51.00 103.92 128.31 8084 -- -- 1.00 1.00 5.50 24.00 34.30 -- --

2665 1.00 1.00 1.00 2.00 9.00 33.00 64.00 121.06 144.06 8085 1.00 1.00 1.00 1.00 11.00 33.00 68.00 120.00 135.65

2694 -- 1.00 2.00 9.00 26.00 74.50 111.80 283.60 -- 8187 1.00 1.00 1.00 2.00 5.00 29.00 72.00 134.80 216.42

2700 1.00 1.00 1.00 1.00 9.00 38.00 74.00 140.00 171.16 8358 -- 1.00 1.00 1.00 3.00 15.00 48.20 94.80 --

3145 1.00 1.00 1.00 2.00 4.00 19.00 48.00 109.00 123.00 8501 1.00 1.00 1.00 2.00 7.00 31.00 60.00 128.12 164.73

3242 -- -- 2.00 4.00 10.00 51.50 90.00 -- -- 8518 1.00 1.00 1.00 2.00 7.00 29.00 59.00 116.30 141.30

3288 -- 1.00 1.00 3.00 10.50 33.75 70.10 199.28 -- 8596 1.00 1.00 1.00 1.00 4.00 24.00 52.00 95.88 113.82

3374 1.00 1.00 1.00 2.00 8.00 33.00 63.40 123.16 149.54 8788 1.00 1.00 1.00 3.00 18.00 48.00 85.80 166.00 179.46

4026 -- -- -- -- .00 -- -- -- -- 8816 -- -- -- -- 4.00 -- -- -- --

4028 1.00 1.00 1.00 1.00 3.00 19.00 48.40 80.76 118.84 9148 -- -- -- -- 10.00 -- -- -- --

4030 1.00 1.00 1.00 1.00 3.00 21.75 53.30 97.60 112.62 9153 -- 1.00 1.00 1.00 7.00 43.00 91.00 152.92 --

4089 1.00 1.00 1.00 1.00 6.00 27.00 58.00 128.10 167.70 9156 1.00 1.00 1.00 1.00 5.00 26.00 53.00 96.00 108.00

4112 1.00 1.00 1.00 1.00 5.00 23.00 48.00 111.20 133.20 9193 1.00 1.00 1.00 1.00 6.00 30.00 57.00 101.16 148.74

4306 1.00 1.00 1.00 2.00 7.00 28.00 54.20 110.00 147.48 9265 1.00 1.00 1.00 1.00 3.00 20.25 47.70 112.52 142.46

4850 1.00 1.00 1.00 2.00 9.00 35.00 72.00 138.00 203.67 9569 1.00 1.00 1.00 1.00 3.00 20.00 48.00 83.96 115.36

4856 1.00 1.00 1.00 1.00 9.00 30.25 55.00 123.02 153.09 9686 1.00 1.00 1.00 1.00 5.00 25.00 51.30 97.00 110.86
132 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 2–5.7. Empirical distribution of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in 

eastern New Mexico.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0199 1.00 1.00 1.00 2.00 9.00 43.75 99.10 201.28 233.92 4860 -- 1.00 1.00 2.00 9.00 58.25 126.40 394.30 --

0205 1.00 1.00 1.00 2.00 7.00 41.00 81.00 169.00 181.00 4862 1.00 1.00 1.00 1.00 18.00 62.00 132.00 229.40 261.10

0208 1.00 1.00 1.00 2.50 8.00 41.00 97.40 199.32 288.92 5370 1.00 1.00 1.00 1.00 6.00 33.00 72.00 161.16 205.32

0404 -- 1.00 1.00 3.00 31.00 86.50 193.60 306.06 -- 5651 1.00 1.00 1.00 2.00 4.00 21.00 70.20 179.96 205.48

0407 1.00 1.00 1.00 2.75 29.00 85.00 169.40 258.50 343.96 5866 -- -- 2.70 9.00 20.50 89.00 209.00 -- --

0600 1.00 1.00 1.00 1.00 7.00 35.00 76.00 152.20 177.42 6138 1.00 1.00 1.00 4.00 18.00 61.00 138.00 312.30 375.53

0606 -- -- 1.00 1.00 17.00 82.50 136.00 -- -- 6275 1.00 1.00 1.00 3.00 18.00 60.00 126.00 261.66 307.66

0646 1.00 1.00 1.00 1.00 8.00 50.50 105.00 255.04 302.68 6435 1.00 1.00 1.00 2.00 7.00 36.00 87.00 183.00 220.75

1120 1.00 1.00 1.00 3.00 23.00 77.75 153.00 335.00 438.22 6492 1.00 1.00 1.00 1.00 12.50 45.75 82.00 174.80 209.81

1440 1.00 1.00 1.00 1.00 13.00 52.00 116.40 221.24 250.58 6619 1.00 1.00 1.00 1.00 7.00 48.00 91.40 172.96 194.00

1446 1.00 1.00 1.00 2.00 6.00 37.25 74.50 163.00 174.90 6659 1.00 1.00 1.00 2.00 7.00 40.00 77.00 151.00 179.45

1469 1.00 1.00 1.00 1.00 6.00 33.00 73.00 141.26 173.63 6797 1.00 1.00 1.00 4.00 17.00 56.00 124.00 247.22 387.92

1475 -- -- 1.00 1.00 7.00 37.00 93.40 -- -- 6951 1.00 1.00 1.00 2.00 9.00 51.00 88.80 211.28 239.17

1480 -- -- -- -- 8.00 -- -- -- -- 7094 1.00 1.00 1.00 2.00 16.00 53.25 104.00 207.00 233.79

1515 1.00 1.00 1.00 2.00 12.00 52.00 104.80 221.38 282.90 7254 1.00 1.00 1.00 1.00 10.00 41.00 93.30 191.12 217.03

1807 1.00 1.00 1.00 2.00 6.00 25.25 67.60 130.66 188.51 7277 -- -- -- -- 6.00 -- -- -- --

1840 1.00 1.00 1.00 1.00 7.00 47.00 93.20 167.36 189.36 7279 1.00 1.00 1.00 1.00 12.00 56.00 115.00 241.54 277.54

1881 -- -- -- -- 119.00 -- -- -- -- 7283 1.00 1.00 1.00 3.00 25.00 80.00 147.60 281.80 369.96

1887 1.00 1.00 1.00 3.00 14.00 59.00 109.00 238.84 285.24 7604 -- -- -- -- 78.00 -- -- -- --

1939 1.00 1.00 1.00 2.00 9.00 47.00 92.00 175.12 211.00 7605 -- -- 1.00 1.00 11.00 43.00 125.20 -- --

1950 -- -- 1.00 2.00 13.00 42.00 70.80 -- -- 7609 1.00 1.00 1.00 2.00 9.00 47.25 96.20 188.10 270.86

1956 -- -- 1.00 2.00 9.50 50.50 102.30 -- -- 7610 1.00 1.00 1.00 1.00 9.00 40.00 81.80 171.00 238.26

1961 -- -- 1.00 4.25 11.50 56.50 110.00 -- -- 7638 1.00 1.00 1.00 2.00 12.00 49.00 106.40 214.84 279.84

1963 1.00 1.00 1.00 2.00 11.00 53.00 99.40 187.00 217.70 7649 1.00 1.00 1.00 3.00 21.00 73.00 147.00 305.72 370.10

1982 1.00 1.00 1.00 1.00 12.00 47.00 94.00 187.40 250.40 7651 1.00 1.00 1.00 1.00 23.50 66.00 143.30 387.44 467.64

2030 1.00 1.00 1.00 1.00 8.00 46.00 93.00 184.40 216.70 7735 1.00 1.00 1.00 3.00 17.00 62.00 139.40 271.58 361.58

2139 -- 1.00 1.00 3.00 17.00 55.50 142.80 330.04 -- 7736 1.00 1.00 1.00 3.00 23.00 72.25 146.30 304.22 344.63

2203 1.00 1.00 1.00 1.00 8.00 39.50 72.80 146.40 234.94 7738 -- 1.00 1.00 3.00 13.00 51.00 107.60 292.68 --

2207 1.00 1.00 1.00 1.75 9.50 50.00 101.80 176.96 216.84 8072 1.00 1.00 1.00 4.00 21.00 67.75 126.00 219.50 297.95

2510 1.00 1.00 1.00 2.00 11.00 49.00 95.00 192.08 220.52 8078 1.00 1.00 1.00 2.00 11.00 53.25 102.00 199.20 233.70

2625 1.00 1.00 1.00 2.00 7.00 43.25 98.20 172.06 211.31 8084 -- -- 1.00 1.00 6.00 34.50 76.20 -- --

2665 1.00 1.00 1.00 3.00 14.00 53.00 105.00 214.70 256.15 8085 1.00 1.00 1.00 2.00 17.00 55.00 103.40 208.04 245.69

2694 -- 1.00 3.00 16.00 33.00 97.00 257.00 440.20 -- 8187 1.00 1.00 1.00 2.00 7.00 52.50 100.20 191.52 222.38

2700 1.00 1.00 1.00 1.00 16.00 62.00 126.00 265.40 331.40 8358 -- -- 1.00 1.00 3.00 21.00 60.00 -- --

3145 1.00 1.00 1.00 2.00 5.50 27.25 71.00 135.92 207.86 8501 1.00 1.00 1.00 2.00 11.00 54.00 116.00 211.12 247.02

3242 -- -- 2.60 4.00 10.00 59.00 146.20 -- -- 8518 1.00 1.00 1.00 2.00 13.00 50.00 98.00 211.20 252.70

3288 -- 1.00 1.00 3.00 22.50 67.00 124.50 366.00 -- 8596 1.00 1.00 1.00 1.00 8.00 46.00 85.70 154.96 194.09

3374 1.00 1.00 1.00 3.00 14.00 50.00 104.60 208.76 290.82 8788 1.00 1.00 1.00 3.00 21.50 69.25 126.00 266.50 378.00

4026 -- -- -- -- .00 -- -- -- -- 8816 -- -- -- -- 4.00 -- -- -- --

4028 1.00 1.00 1.00 1.00 5.00 32.25 72.40 180.10 202.70 9148 -- -- -- -- 115.00 -- -- -- --

4030 1.00 1.00 1.00 1.00 7.00 43.25 90.00 131.30 171.95 9153 -- 1.00 1.00 1.00 7.00 79.00 121.00 245.32 --

4089 1.00 1.00 1.00 1.00 9.00 44.00 99.00 231.00 290.00 9156 1.00 1.00 1.00 1.00 8.00 43.00 91.50 169.00 193.00

4112 1.00 1.00 1.00 1.00 7.00 36.00 84.80 147.32 181.56 9193 1.00 1.00 1.00 1.00 15.00 56.50 101.40 168.76 190.38

4306 1.00 1.00 1.00 2.00 10.00 52.00 110.00 203.92 218.65 9265 1.00 1.00 1.00 1.00 5.00 32.00 71.00 163.88 193.80

4850 1.00 1.00 1.00 2.00 15.50 63.25 120.70 248.22 340.57 9569 1.00 1.00 1.00 1.00 7.00 38.00 75.90 178.04 211.38

4856 1.00 1.00 1.00 2.00 12.00 48.00 113.00 249.20 332.60 9686 1.00 1.00 1.00 2.00 7.00 37.00 84.60 171.96 207.56
Statistical Characteristics 

of Storm Interevent Time, 

Depth, and Duration for 

Eastern New Mexico, 

Oklahoma, and Texas

Appendix 3

Appendix 3—

Storm Statistics for Hourly

Rainfall Stations in Oklahoma
Blank Page
Appendix 3 135

Appendix 3–1.1. Number of storms, total duration, and mean storm interevent time defined by 6-hour minimum interevent time for hourly 

rainfall stations in Oklahoma.

[--, not available] 

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0017 37 2,016 1.98 2665 1,504 279,696 7.52 5063 14 2,208 6.22 7412 2,444 484,014 8.09

0026 1,243 189,192 6.09 2678 22 2,016 3.56 5068 133 16,080 4.82 7556 550 91,044 6.73

0179 1,583 306,537 7.92 2849 2,567 448,934 7.10 5108 3,467 478,177 5.49 7588 677 158,232 9.51

0188 902 200,904 9.06 2852 307 49,728 6.60 5329 25 2,016 3.00 7660 2,443 483,990 8.08

0215 2,625 483,917 7.44 2994 585 72,336 4.92 5463 1,615 288,975 7.30 7675 1,959 309,543 6.41

0242 1,188 227,208 7.74 2997 343 46,728 5.41 5581 32 2,016 2.25 7705 3,260 484,086 5.99

0256 3,676 468,853 5.11 3002 2,245 484,178 8.82 5582 343 55,368 6.47 7714 788 195,072 10.09

0260 32 5,808 7.22 3281 2,723 438,744 6.51 5589 1,621 238,629 5.97 7732 1,268 201,624 6.37

0292 1,033 181,645 7.15 3286 3,211 455,654 5.69 5648 2,750 484,213 7.16 7739 1,875 254,039 5.46

0293 1,434 219,878 6.21 3304 2,694 483,966 7.28 5662 715 86,616 4.77 8029 884 200,160 9.23

0296 739 98,640 5.31 3353 27 1,896 2.50 5664 1,336 198,470 6.00 8092 4 1,464 15.25

0535 1,168 162,830 5.64 3407 461 84,292 7.41 6130 3,432 484,134 5.64 8101 2,435 484,151 8.12

0537 368 46,007 5.05 3497 3,194 484,026 6.12 6328 682 168,768 10.07 8290 1,972 290,040 5.92

0670 4,021 484,231 4.81 3628 2,457 484,135 8.04 6391 41 4,416 4.33 8420 839 146,696 7.04

0814 120 34,320 11.84 3700 1,753 276,120 6.32 6485 3,402 459,723 5.41 8470 61 20,496 13.77

0908 1,336 335,099 10.29 3740 2,873 483,978 6.81 6612 25 21,154 35.08 8497 3,659 484,182 5.30

0912 839 158,520 7.68 3830 502 86,928 6.97 6616 2,926 483,347 6.69 8501 3,020 453,753 6.06

1148 31 2,088 2.47 3835 227 29,640 5.23 6620 1,286 188,946 5.95 8504 318 56,224 7.23

1168 2,373 288,946 4.81 4001 10 1,296 5.27 6627 1,652 233,650 5.69 8708 1,660 295,443 7.26

1391 38 2,136 2.03 4008 50 5,808 4.49 6638 3,194 466,694 5.88 8769 3,068 435,941 5.69

1436 1,864 268,080 5.71 4010 1,317 173,856 5.22 6643 208 26,304 5.01 8879 332 67,200 8.23

1437 1,457 216,039 6.00 4051 1,576 229,608 5.85 6656 483 56,808 4.66 8884 10 672 2.43

1544 4,314 483,436 4.45 4052 1,780 251,204 5.70 6661 4,081 484,166 4.69 8992 4,476 482,102 4.23

1684 2,953 434,246 5.94 4098 3,085 422,152 5.47 6729 2,801 372,427 5.30 9014 69 16,080 9.53

1688 196 50,400 10.48 4202 2,591 445,343 7.00 6740 992 186,220 7.66 9023 3,912 481,954 4.86

1750 2,443 392,817 6.53 4204 274 45,192 6.67 6760 1,284 246,192 7.76 9247 34 2,016 2.14

1855 43 2,016 1.69 4384 3,680 455,726 4.92 6859 3,339 484,210 5.83 9278 28 1,896 2.51

1891 5 2,784 23.03 4386 2,052 248,882 4.80 6926 23 2,184 3.70 9300 41 2,184 1.90

1900 2,218 308,928 5.55 4388 139 15,624 4.47 6935 3,554 463,634 5.24 9364 33 2,184 2.49

1902 1,088 149,600 5.55 4393 2,990 425,017 5.70 6940 0 24 -- 9404 2,739 481,280 7.11

1909 30 2,016 2.47 4506 1,972 270,888 5.49 6944 3,521 484,090 5.53 9450 2,100 309,586 5.96

1954 39 2,016 1.88 4692 739 106,656 5.76 7080 2,334 277,331 4.71 9503 598 83,256 5.52

2145 267 55,368 8.41 4812 2,552 349,689 5.48 7196 2,613 445,356 6.89 9629 2,958 481,788 6.57

2242 31 2,088 2.44 4865 3,482 484,184 5.55 7201 314 38,616 4.89 9719 1,157 190,528 6.61

2309 242 33,600 5.56 4969 296 46,056 6.27 7309 1,864 262,049 5.68 9724 988 117,472 4.77

2334 1,615 257,534 6.48 4975 2,136 283,256 5.31 7358 1,124 151,944 5.37 9748 1,578 196,347 5.01

2500 22 2,184 3.79 4978 2,842 446,857 6.36 7372 37 2,112 2.05 9762 1,527 267,312 7.07

2654 1,318 204,388 6.29
136 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–1.2. Number of storms, total duration, and mean storm interevent time defined by 8-hour minimum interevent time for hourly 

rainfall stations in Oklahoma.

[--, not available] 

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0017 34 2,016 2.13 2665 1,427 279,696 7.91 5063 14 2,208 6.22 7412 2,322 484,014 8.50

0026 1,179 189,192 6.40 2678 21 2,016 3.72 5068 127 16,080 5.03 7556 509 91,044 7.25

0179 1,483 306,537 8.43 2849 2,417 448,934 7.53 5108 3,266 478,177 5.81 7588 648 158,232 9.92

0188 857 200,904 9.53 2852 279 49,728 7.24 5329 24 2,016 3.12 7660 2,323 483,990 8.49

0215 2,499 483,917 7.80 2994 556 72,336 5.16 5463 1,524 288,975 7.72 7675 1,832 309,543 6.83

0242 1,143 227,208 8.04 2997 331 46,728 5.60 5581 31 2,016 2.31 7705 3,088 484,086 6.31

0256 3,449 468,853 5.43 3002 2,156 484,178 9.17 5582 325 55,368 6.82 7714 749 195,072 10.60

0260 30 5,808 7.68 3281 2,559 438,744 6.91 5589 1,507 238,629 6.40 7732 1,215 201,624 6.63

0292 959 181,645 7.68 3286 3,029 455,654 6.02 5648 2,605 484,213 7.55 7739 1,763 254,039 5.79

0293 1,360 219,878 6.54 3304 2,569 483,966 7.62 5662 668 86,616 5.09 8029 843 200,160 9.67

0296 686 98,640 5.70 3353 22 1,896 3.01 5664 1,248 198,470 6.41 8092 4 1,464 15.25

0535 1,081 162,830 6.08 3407 423 84,292 8.05 6130 3,235 484,134 5.96 8101 2,303 484,151 8.57

0537 345 46,007 5.36 3497 2,967 484,026 6.57 6328 653 168,768 10.50 8290 1,870 290,040 6.22

0670 3,782 484,231 5.10 3628 2,341 484,135 8.42 6391 39 4,416 4.53 8420 805 146,696 7.32

0814 118 34,320 12.04 3700 1,663 276,120 6.65 6485 3,193 459,723 5.75 8470 55 20,496 15.25

0908 1,291 335,099 10.64 3740 2,723 483,978 7.17 6612 23 21,154 38.11 8497 3,425 484,182 5.64

0912 805 158,520 7.99 3830 472 86,928 7.40 6616 2,752 483,347 7.10 8501 2,848 453,753 6.41

1148 31 2,088 2.47 3835 219 29,640 5.41 6620 1,204 188,946 6.34 8504 302 56,224 7.60

1168 2,242 288,946 5.07 4001 9 1,296 5.83 6627 1,551 233,650 6.04 8708 1,558 295,443 7.71

1391 35 2,136 2.19 4008 45 5,808 4.96 6638 2,996 466,694 6.25 8769 2,875 435,941 6.05

1436 1,786 268,080 5.95 4010 1,252 173,856 5.47 6643 203 26,304 5.13 8879 317 67,200 8.61

1437 1,357 216,039 6.42 4051 1,492 229,608 6.17 6656 451 56,808 4.98 8884 10 672 2.43

1544 4,016 483,436 4.76 4052 1,658 251,204 6.10 6661 3,807 484,166 5.01 8992 4,180 482,102 4.51

1684 2,783 434,246 6.28 4098 2,913 422,152 5.77 6729 2,658 372,427 5.58 9014 67 16,080 9.81

1688 182 50,400 11.26 4202 2,437 445,343 7.42 6740 956 186,220 7.93 9023 3,698 481,954 5.13

1750 2,305 392,817 6.91 4204 253 45,192 7.20 6760 1,220 246,192 8.15 9247 31 2,016 2.32

1855 39 2,016 1.83 4384 3,459 455,726 5.22 6859 3,140 484,210 6.18 9278 25 1,896 2.78

1891 5 2,784 22.98 4386 1,937 248,882 5.07 6926 21 2,184 4.03 9300 37 2,184 2.07

1900 2,112 308,928 5.81 4388 130 15,624 4.76 6935 3,314 463,634 5.60 9364 31 2,184 2.63

1902 1,022 149,600 5.89 4393 2,837 425,017 6.00 6940 0 24 -- 9404 2,589 48,1280 7.51

1909 28 2,016 2.62 4506 1,871 270,888 5.77 6944 3,289 484,090 5.90 9450 1,973 309,586 6.33

1954 36 2,016 2.02 4692 706 106,656 6.01 7080 2,215 277,331 4.95 9503 564 83,256 5.84

2145 254 55,368 8.83 4812 2,421 349,689 5.76 7196 2,467 445,356 7.29 9629 2,792 481,788 6.94

2242 29 2,088 2.59 4865 3,276 484,184 5.88 7201 299 38,616 5.13 9719 1,101 190,528 6.94

2309 226 33,600 5.93 4969 284 46,056 6.52 7309 1,732 262,049 6.09 9724 916 117,472 5.12

2334 1,508 257,534 6.92 4975 2,004 283,256 5.65 7358 1,071 151,944 5.62 9748 1,461 196,347 5.39

2500 21 2,184 3.95 4978 2,669 446,857 6.76 7372 32 2,112 2.32 9762 1,465 267,312 7.36

2654 1,247 204,388 6.64
Appendix 3 137

Appendix 3–1.3. Number of storms, total duration, and mean storm interevent time defined by 12-hour minimum interevent time for 

hourly rainfall stations in Oklahoma.

[--, not available] 

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0017 27 2,016 2.55 2665 1,347 279,696 8.36 5063 12 2,208 7.20 7412 2,156 484,014 9.12

0026 1,098 189,192 6.85 2678 18 2,016 4.25 5068 114 16,080 5.56 7556 472 91,044 7.79

0179 1,346 306,537 9.25 2849 2,237 448,934 8.10 5108 3,019 478,177 6.25 7588 613 158,232 10.47

0188 782 200,904 10.40 2852 259 49,728 7.77 5329 22 2,016 3.37 7660 2,174 483,990 9.04

0215 2,359 483,917 8.24 2994 510 72,336 5.59 5463 1,377 288,975 8.50 7675 1,658 309,543 7.51

0242 1,057 227,208 8.66 2997 310 46,728 5.95 5581 27 2,016 2.60 7705 2,822 484,086 6.87

0256 3,153 468,853 5.91 3002 2,019 484,178 9.77 5582 307 55,368 7.20 7714 694 195,072 11.41

0260 26 5,808 8.80 3281 2,378 438,744 7.41 5589 1,381 238,629 6.95 7732 1,138 201,624 7.06

0292 875 181,645 8.38 3286 2,813 455,654 6.45 5648 2,411 484,213 8.12 7739 1,620 254,039 6.27

0293 1,246 219,878 7.10 3304 2,395 483,966 8.15 5662 623 86,616 5.43 8029 798 200,160 10.19

0296 627 98,640 6.20 3353 20 1,896 3.27 5664 1,134 198,470 7.01 8092 4 1,464 15.25

0535 988 162,830 6.61 3407 378 84,292 8.96 6130 2,969 484,134 6.46 8101 2,151 484,151 9.14

0537 320 46,007 5.75 3497 2,715 484,026 7.15 6328 603 168,768 11.34 8290 1,713 290,040 6.76

0670 3,450 484,231 5.55 3628 2,168 484,135 9.06 6391 36 4,416 4.88 8420 755 146,696 7.78

0814 114 34,320 12.45 3700 1,561 276,120 7.06 6485 2,921 459,723 6.25 8470 53 20,496 15.81

0908 1,207 335,099 11.36 3740 2,523 483,978 7.71 6612 21 21,154 41.70 8497 3,124 484,182 6.15

0912 773 158,520 8.30 3830 451 86,928 7.72 6616 2,540 483,347 7.66 8501 2,662 453,753 6.83

1148 25 2,088 2.97 3835 195 29,640 6.02 6620 1,093 188,946 6.94 8504 271 56,224 8.42

1168 2,069 288,946 5.47 4001 8 1,296 6.51 6627 1,426 233,650 6.54 8708 1,425 295,443 8.40

1391 30 2,136 2.49 4008 38 5,808 5.79 6638 2,746 466,694 6.78 8769 2,683 435,941 6.45

1436 1,645 268,080 6.42 4010 1,151 173,856 5.92 6643 177 26,304 5.83 8879 288 67,200 9.43

1437 1,220 216,039 7.10 4051 1,376 229,608 6.65 6656 409 56,808 5.45 8884 8 672 2.93

1544 3,645 483,436 5.20 4052 1,526 251,204 6.60 6661 3,437 484,166 5.51 8992 3,800 482,102 4.92

1684 2,538 434,246 6.85 4098 2,686 422,152 6.23 6729 2,471 372,427 5.97 9014 64 16,080 10.25

1688 166 50,400 12.31 4202 2,229 445,343 8.08 6740 905 186,220 8.36 9023 3,363 481,954 5.60

1750 2,106 392,817 7.52 4204 239 45,192 7.60 6760 1,142 246,192 8.68 9247 28 2,016 2.51

1855 28 2,016 2.39 4384 3,174 455,726 5.65 6859 2,897 484,210 6.67 9278 23 1,896 2.98

1891 4 2,784 29.00 4386 1,781 248,882 5.48 6926 19 2,184 4.41 9300 32 2,184 2.34

1900 1,970 308,928 6.20 4388 115 15,624 5.32 6935 3,014 463,634 6.12 9364 28 2,184 2.87

1902 921 149,600 6.49 4393 2,612 425,017 6.48 6940 0 24 -- 9404 2,398 481,280 8.07

1909 24 2,016 2.99 4506 1,717 270,888 6.25 6944 2,989 484,090 6.45 9450 1,803 309,586 6.89

1954 29 2,016 2.39 4692 655 106,656 6.45 7080 2,054 277,331 5.30 9503 508 83,256 6.44

2145 237 55,368 9.44 4812 2,228 349,689 6.23 7196 2,298 445,356 7.79 9629 2,561 481,788 7.53

2242 27 2,088 2.75 4865 3,019 484,184 6.35 7201 283 38,616 5.39 9719 1,039 190,528 7.33

2309 209 33,600 6.39 4969 273 46,056 6.77 7309 1,567 262,049 6.69 9724 841 117,472 5.54

2334 1,406 257,534 7.40 4975 1,819 283,256 6.18 7358 991 151,944 6.04 9748 1,317 196,347 5.93

2500 19 2,184 4.34 4978 2,440 446,857 7.36 7372 26 2,112 2.77 9762 1,382 267,312 7.78

2654 1,138 204,388 7.23
138 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–1.4. Number of storms, total duration, and mean storm interevent time defined by 18-hour minimum interevent time for 

hourly rainfall stations in Oklahoma.

[--, not available] 

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0017 23 2,016 2.88 2665 1,238 279,696 9.04 5063 11 2,208 7.80 7412 1,988 484,014 9.84

0026 994 189,192 7.50 2678 13 2,016 5.68 5068 103 16,080 6.09 7556 427 91,044 8.54

0179 1,211 306,537 10.22 2849 2,015 448,934 8.93 5108 2,753 478,177 6.80 7588 559 158,232 11.42

0188 715 200,904 11.32 2852 236 49,728 8.47 5329 19 2,016 3.77 7660 1,992 483,990 9.81

0215 2,171 483,917 8.90 2994 460 72,336 6.14 5463 1,268 288,975 9.18 7675 1,507 309,543 8.20

0242 978 227,208 9.31 2997 288 46,728 6.36 5581 21 2,016 3.14 7705 2,572 484,086 7.48

0256 2,836 468,853 6.50 3002 1,871 484,178 10.49 5582 281 55,368 7.81 7714 651 195,072 12.12

0260 24 5,808 9.49 3281 2,200 438,744 7.96 5589 1,238 238,629 7.68 7732 1,061 201,624 7.53

0292 769 181,645 9.45 3286 2,559 455,654 7.03 5648 2,186 484,213 8.90 7739 1,453 254,039 6.92

0293 1,136 219,878 7.73 3304 2,202 483,966 8.81 5662 559 86,616 5.98 8029 746 200,160 10.86

0296 564 98,640 6.83 3353 18 1,896 3.54 5664 1,025 198,470 7.70 8092 4 1,464 15.25

0535 887 162,830 7.30 3407 341 84,292 9.86 6130 2,687 484,134 7.08 8101 1,986 484,151 9.85

0537 291 46,007 6.26 3497 2,497 484,026 7.72 6328 554 168,768 12.29 8290 1,553 290,040 7.39

0670 3,137 484,231 6.04 3628 2,000 484,135 9.78 6391 33 4,416 5.25 8420 703 146,696 8.31

0814 108 34,320 13.10 3700 1,452 276,120 7.54 6485 2,668 459,723 6.78 8470 48 20,496 17.39

0908 1,116 335,099 12.23 3740 2,352 483,978 8.23 6612 18 21,154 48.56 8497 2,855 484,182 6.67

0912 723 158,520 8.84 3830 412 86,928 8.40 6616 2,322 483,347 8.32 8501 2,440 453,753 7.40

1148 23 2,088 3.17 3835 175 29,640 6.63 6620 1,005 188,946 7.49 8504 242 56,224 9.36

1168 1,881 288,946 5.95 4001 6 1,296 8.51 6627 1,297 233,650 7.13 8708 1,307 295,443 9.10

1391 26 2,136 2.78 4008 33 5,808 6.59 6638 2,520 466,694 7.33 8769 2,467 435,941 6.97

1436 1,512 268,080 6.94 4010 1,061 173,856 6.37 6643 158 26,304 6.46 8879 266 67,200 10.16

1437 1,081 216,039 7.93 4051 1,256 229,608 7.23 6656 370 56,808 5.96 8884 7 672 3.15

1544 3,242 483,436 5.78 4052 1,375 251,204 7.26 6661 3,110 484,166 6.03 8992 3,419 482,102 5.41

1684 2,320 434,246 7.44 4098 2,472 422,152 6.71 6729 2,287 372,427 6.40 9014 62 16,080 10.56

1688 158 50,400 12.90 4202 2,005 445,343 8.91 6740 839 186,220 8.97 9023 3,059 481,954 6.10

1750 1,922 392,817 8.18 4204 218 45,192 8.28 6760 1,063 246,192 9.28 9247 27 2,016 2.59

1855 23 2,016 2.78 4384 2,860 455,726 6.21 6859 2,641 484,210 7.25 9278 19 1,896 3.46

1891 4 2,784 29.00 4386 1,602 248,882 6.03 6926 16 2,184 5.12 9300 28 2,184 2.57

1900 1,815 308,928 6.68 4388 109 15,624 5.58 6935 2,745 463,634 6.66 9364 24 2,184 3.25

1902 843 149,600 7.04 4393 2,400 425,017 7.00 6940 0 24 -- 9404 2,203 481,280 8.74

1909 22 2,016 3.18 4506 1,560 270,888 6.82 6944 2,723 484,090 7.03 9450 1,629 309,586 7.56

1954 22 2,016 2.97 4692 621 106,656 6.77 7080 1,843 277,331 5.84 9503 455 83,256 7.12

2145 219 55,368 10.16 4812 2,052 349,689 6.71 7196 2,117 445,356 8.41 9629 2,342 481,788 8.18

2242 26 2,088 2.81 4865 2,756 484,184 6.90 7201 254 38,616 5.94 9719 979 190,528 7.74

2309 192 33,600 6.90 4969 249 46,056 7.37 7309 1,419 262,049 7.33 9724 755 117,472 6.10

2334 1,283 257,534 8.05 4975 1,672 283,256 6.67 7358 911 151,944 6.52 9748 1,174 196,347 6.58

2500 17 2,184 4.77 4978 2,233 446,857 7.98 7372 24 2,112 2.95 9762 1,301 267,312 8.23

2654 1,002 204,388 8.13
Appendix 3 139

Appendix 3–1.5. Number of storms, total duration, and mean storm interevent time defined by 24-hour minimum interevent time for 

hourly rainfall stations in Oklahoma.

[--, not available] 

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0017 19 2,016 3.31 2665 1,168 279,696 9.54 5063 9 2,208 9.34 7412 1,842 484,014 10.56

0026 915 189,192 8.07 2678 13 2,016 5.68 5068 91 16,080 6.78 7556 388 91,044 9.32

0179 1,118 306,537 10.99 2849 1,878 448,934 9.52 5108 2,553 478,177 7.27 7588 530 158,232 12.00

0188 670 200,904 12.02 2852 216 49,728 9.17 5329 18 2,016 3.94 7660 1,844 483,990 10.53

0215 2,061 483,917 9.33 2994 425 72,336 6.57 5463 1,159 288,975 9.96 7675 1,406 309,543 8.73

0242 919 227,208 9.85 2997 269 46,728 6.75 5581 18 2,016 3.50 7705 2,377 484,086 8.02

0256 2,598 468,853 7.02 3002 1,735 484,178 11.25 5582 261 55,368 8.34 7714 602 195,072 13.04

0260 23 5,808 9.82 3281 2,043 438,744 8.50 5589 1,140 238,629 8.27 7732 989 201,624 8.01

0292 714 181,645 10.11 3286 2,389 455,654 7.47 5648 2,016 484,213 9.58 7739 1,348 254,039 7.39

0293 1,044 219,878 8.34 3304 2,050 483,966 9.40 5662 508 86,616 6.50 8029 702 200,160 11.49

0296 532 98,640 7.19 3353 17 1,896 3.70 5664 946 198,470 8.27 8092 4 1,464 15.25

0535 829 162,830 7.75 3407 311 84,292 10.73 6130 2,496 484,134 7.56 8101 1,834 484,151 10.60

0537 263 46,007 6.84 3497 2,322 484,026 8.24 6328 528 168,768 12.86 8290 1,465 290,040 7.79

0670 2,890 484,231 6.49 3628 1,854 484,135 10.48 6391 28 4,416 6.04 8420 666 146,696 8.73

0814 98 34,320 14.35 3700 1,347 276,120 8.06 6485 2,448 459,723 7.31 8470 46 20,496 18.11

0908 1,012 335,099 13.40 3740 2,203 483,978 8.73 6612 17 21,154 51.37 8497 2,647 484,182 7.13

0912 654 158,520 9.68 3830 386 86,928 8.91 6616 2,164 483,347 8.86 8501 2,262 453,753 7.92

1148 21 2,088 3.39 3835 157 29,640 7.28 6620 923 188,946 8.08 8504 228 56,224 9.89

1168 1,741 288,946 6.36 4001 6 1,296 8.51 6627 1,216 233,650 7.55 8708 1,206 295,443 9.79

1391 22 2,136 3.08 4008 33 5,808 6.59 6638 2,309 466,694 7.93 8769 2,279 435,941 7.47

1436 1,393 268,080 7.46 4010 987 173,856 6.79 6643 147 26,304 6.88 8879 241 67,200 11.13

1437 982 216,039 8.65 4051 1,160 229,608 7.76 6656 335 56,808 6.49 8884 7 672 3.15

1544 2,956 483,436 6.25 4052 1,264 251,204 7.82 6661 2,869 484,166 6.46 8992 3,162 482,102 5.78

1684 2,155 434,246 7.94 4098 2,308 422,152 7.13 6729 2,108 372,427 6.87 9014 54 16,080 12.00

1688 141 50,400 14.36 4202 1,859 445,343 9.55 6740 775 186,220 9.64 9023 2,812 481,954 6.56

1750 1,785 392,817 8.75 4204 200 45,192 8.94 6760 1,003 246,192 9.78 9247 23 2,016 2.89

1855 23 2,016 2.78 4384 2,644 455,726 6.65 6859 2,464 484,210 7.71 9278 17 1,896 3.75

1891 3 2,784 38.67 4386 1,466 248,882 6.51 6926 14 2,184 5.73 9300 24 2,184 2.85

1900 1,703 308,928 7.06 4388 98 15,624 6.11 6935 2,562 463,634 7.07 9364 24 2,184 3.21

1902 782 149,600 7.52 4393 2,259 425,017 7.38 6940 0 24 -- 9404 2,042 481,280 9.36

1909 20 2,016 3.41 4506 1,467 270,888 7.20 6944 2,537 484,090 7.48 9450 1,508 309,586 8.10

1954 18 2,016 3.45 4692 589 106,656 7.10 7080 1,696 277,331 6.27 9503 420 83,256 7.64

2145 206 55,368 10.75 4812 1,917 349,689 7.13 7196 1,997 445,356 8.87 9629 2,173 481,788 8.75

2242 22 2,088 3.17 4865 2,550 484,184 7.39 7201 229 38,616 6.50 9719 917 190,528 8.20

2309 168 33,600 7.77 4969 233 46,056 7.81 7309 1,324 262,049 7.79 9724 685 117,472 6.64

2334 1,189 257,534 8.61 4975 1,559 283,256 7.09 7358 837 151,944 7.02 9748 1,067 196,347 7.16

2500 13 2,184 5.97 4978 2,088 446,857 8.48 7372 22 2,112 3.14 9762 1,208 267,312 8.79

2654 914 204,388 8.83
140 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–1.6. Number of storms, total duration, and mean storm interevent time defined by 48-hour minimum interevent time for 

hourly rainfall stations in Oklahoma.

[--, not available] 

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0017 15 2,016 3.98 2665 1,002 279,696 10.87 5063 9 2,208 9.34 7412 1,544 484,014 12.32

0026 748 189,192 9.55 2678 8 2,016 8.77 5068 71 16,080 8.27 7556 309 91,044 11.33

0179 943 306,537 12.77 2849 1,537 448,934 11.32 5108 2,123 478,177 8.44 7588 440 158,232 14.15

0188 570 200,904 13.88 2852 188 49,728 10.34 5329 10 2,016 5.97 7660 1,556 483,990 12.22

0215 1,712 483,917 10.93 2994 344 72,336 7.77 5463 930 288,975 12.06 7675 1,147 309,543 10.38

0242 777 227,208 11.38 2997 220 46,728 7.92 5581 12 2,016 4.74 7705 1,932 484,086 9.54

0256 2,085 468,853 8.39 3002 1,479 484,178 12.94 5582 213 55,368 9.89 7714 500 195,072 15.41

0260 16 5,808 13.55 3281 1,687 438,744 9.99 5589 937 238,629 9.75 7732 820 201,624 9.36

0292 575 181,645 12.21 3286 1,921 455,654 8.95 5648 1,673 484,213 11.24 7739 1,057 254,039 9.03

0293 866 219,878 9.75 3304 1,703 483,966 11.02 5662 405 86,616 7.78 8029 578 200,160 13.64

0296 422 98,640 8.68 3353 12 1,896 4.67 5664 774 198,470 9.78 8092 3 1,464 20.33

0535 640 162,830 9.63 3407 250 84,292 13.00 6130 2,010 484,134 9.03 8101 1,489 484,151 12.72

0537 205 46,007 8.35 3497 1,873 484,026 9.86 6328 443 168,768 15.04 8290 1,187 290,040 9.27

0670 2,301 484,231 7.78 3628 1,546 484,135 12.28 6391 22 4,416 7.24 8420 554 146,696 10.20

0814 77 34,320 17.88 3700 1,115 276,120 9.43 6485 1,960 459,723 8.78 8470 35 20,496 23.37

0908 826 335,099 16.10 3740 1,802 483,978 10.34 6612 10 21,154 86.21 8497 2,149 484,182 8.45

0912 551 158,520 11.21 3830 320 86,928 10.46 6616 1,746 483,347 10.64 8501 1,845 453,753 9.38

1148 12 2,088 5.15 3835 113 29,640 9.50 6620 769 188,946 9.41 8504 188 56,224 11.70

1168 1,428 288,946 7.44 4001 4 1,296 13.50 6627 987 233,650 8.96 8708 983 295,443 11.68

1391 17 2,136 3.74 4008 30 5,808 7.09 6638 1,848 466,694 9.54 8769 1,855 435,941 8.85

1436 1,138 268,080 8.79 4010 793 173,856 8.10 6643 123 26,304 7.94 8879 201 67,200 13.04

1437 770 216,039 10.63 4051 955 229,608 9.11 6656 269 56,808 7.73 8884 4 672 7.00

1544 2,342 483,436 7.52 4052 1,012 251,204 9.40 6661 2,266 484,166 7.79 8992 2,496 482,102 6.93

1684 1,753 434,246 9.43 4098 1,889 422,152 8.39 6729 1,701 372,427 8.17 9014 44 16,080 14.40

1688 121 50,400 16.50 4202 1,546 445,343 11.19 6740 647 186,220 11.27 9023 2,276 481,954 7.76

1750 1,454 392,817 10.41 4204 169 45,192 10.30 6760 854 246,192 11.24 9247 12 2,016 4.45

1855 13 2,016 4.19 4384 2,141 455,726 7.87 6859 2,003 484,210 9.16 9278 11 1,896 5.22

1891 2 2,784 58.00 4386 1,194 248,882 7.66 6926 9 2,184 8.39 9300 15 2,184 3.95

1900 1,378 308,928 8.39 4388 80 15,624 7.18 6935 2,045 463,634 8.50 9364 16 2,184 4.27

1902 614 149,600 9.19 4393 1,849 425,017 8.70 6940 0 24 -- 9404 1,682 481,280 11.05

1909 15 2,016 4.01 4506 1,179 270,888 8.60 6944 2,055 484,090 8.90 9450 1,212 309,586 9.73

1954 14 2,016 4.07 4692 476 106,656 8.42 7080 1,363 277,331 7.46 9503 342 83,256 9.04

2145 176 55,368 12.34 4812 1,556 349,689 8.44 7196 1,651 445,356 10.42 9629 1,773 481,788 10.40

2242 14 2,088 4.27 4865 2,096 484,184 8.67 7201 183 38,616 7.76 9719 776 190,528 9.43

2309 132 33,600 9.47 4969 196 46,056 9.02 7309 1,043 262,049 9.50 9724 534 117,472 8.12

2334 986 257,534 10.09 4975 1,281 283,256 8.32 7358 682 151,944 8.29 9748 830 196,347 8.79

2500 9 2,184 8.24 4978 1,714 446,857 10.01 7372 15 2,112 4.16 9762 1,010 267,312 10.23

2654 741 204,388 10.58
Appendix 3 141

Appendix 3–1.7. Number of storms, total duration, and mean storm interevent time defined by 72-hour minimum interevent time for 

hourly rainfall stations in Oklahoma. 

[--, not available] 

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean

storm

interevent

time

(days)

0017 11 2,016 4.50 2665 872 279,696 12.12 5063 7 2,208 11.28 7412 1,319 484,014 13.99

0026 632 189,192 10.86 2678 7 2,016 9.64 5068 58 16,080 9.61 7556 264 91,044 12.84

0179 803 306,537 14.58 2849 1,290 448,934 13.01 5108 1,794 478,177 9.55 7588 387 158,232 15.75

0188 499 200,904 15.50 2852 165 49,728 11.46 5329 8 2,016 6.77 7660 1,325 483,990 13.92

0215 1,437 483,917 12.55 2994 283 72,336 8.92 5463 787 288,975 13.81 7675 954 309,543 11.98

0242 676 227,208 12.71 2997 195 46,728 8.62 5581 8 2,016 5.83 7705 1,633 484,086 10.84

0256 1,734 468,853 9.59 3002 1,296 484,178 14.41 5582 182 55,368 11.14 7714 447 195,072 16.94

0260 11 5,808 18.61 3281 1,435 438,744 11.32 5589 778 238,629 11.24 7732 690 201,624 10.67

0292 481 181,645 14.13 3286 1,579 455,654 10.35 5648 1,410 484,213 12.88 7739 861 254,039 10.54

0293 735 219,878 11.05 3304 1,454 483,966 12.49 5662 340 86,616 8.80 8029 512 200,160 15.07

0296 352 98,640 9.92 3353 8 1,896 6.17 5664 640 198,470 11.32 8092 3 1,464 20.33

0535 513 162,830 11.41 3407 201 84,292 15.56 6130 1,656 484,134 10.43 8101 1,271 484,151 14.48

0537 169 46,007 9.61 3497 1,583 484,026 11.23 6328 387 168,768 16.86 8290 989 290,040 10.63

0670 1,891 484,231 8.94 3628 1,311 484,135 14.03 6391 13 4,416 10.52 8420 460 146,696 11.78

0814 67 34,320 20.16 3700 913 276,120 10.98 6485 1,625 459,723 10.08 8470 30 20,496 26.91

0908 712 335,099 18.29 3740 1,494 483,978 11.97 6612 8 21,154 107.20 8497 1,763 484,182 9.76

0912 479 158,520 12.52 3830 266 86,928 12.09 6616 1,453 483,347 12.29 8501 1,532 453,753 10.80

1148 8 2,088 6.51 3835 85 29,640 11.78 6620 630 188,946 10.94 8504 159 56,224 13.37

1168 1,170 288,946 8.54 4001 4 1,296 13.50 6627 794 233,650 10.54 8708 820 295,443 13.52

1391 11 2,136 4.44 4008 27 5,808 7.62 6638 1,536 466,694 10.98 8769 1,544 435,941 10.14

1436 954 268,080 10.01 4010 666 173,856 9.17 6643 101 26,304 9.12 8879 174 67,200 14.68

1437 633 216,039 12.41 4051 818 229,608 10.23 6656 220 56,808 8.91 8884 2 672 14.00

1544 1,909 483,436 8.66 4052 844 251,204 10.79 6661 1,833 484,166 9.05 8992 1,974 482,102 8.11

1684 1,445 434,246 10.92 4098 1,572 422,152 9.59 6729 1,385 372,427 9.48 9014 36 16,080 17.03

1688 103 50,400 18.96 4202 1,304 445,343 12.81 6740 537 186,220 13.07 9023 1,870 481,954 8.91

1750 1,234 392,817 11.83 4204 138 45,192 12.06 6760 747 246,192 12.50 9247 9 2,016 5.12

1855 10 2,016 4.65 4384 1,778 455,726 8.97 6859 1,667 484,210 10.50 9278 8 1,896 6.31

1891 2 2,784 58.00 4386 972 248,882 8.86 6926 5 2,184 13.10 9300 10 2,184 4.72

1900 1,154 308,928 9.54 4388 62 15,624 8.46 6935 1,686 463,634 9.79 9364 11 2,184 5.04

1902 495 149,600 10.82 4393 1,524 425,017 10.03 6940 0 24 -- 9404 1,414 481,280 12.68

1909 11 2,016 4.79 4506 955 270,888 10.06 6944 1,693 484,090 10.28 9450 992 309,586 11.35

1954 10 2,016 5.02 4692 395 106,656 9.66 7080 1,102 277,331 8.65 9503 284 83,256 10.40

2145 159 55,368 13.39 4812 1,272 349,689 9.78 7196 1,390 445,356 11.91 9629 1,491 481,788 11.90

2242 8 2,088 5.58 4865 1,771 484,184 9.81 7201 144 38,616 9.18 9719 660 190,528 10.65

2309 114 33,600 10.57 4969 155 46,056 10.75 7309 845 262,049 11.16 9724 426 117,472 9.54

2334 802 257,534 11.84 4975 1,054 283,256 9.58 7358 548 151,944 9.72 9748 682 196,347 10.17

2500 7 2,184 9.91 4978 1,439 446,857 11.46 7372 11 2,112 4.87 9762 859 267,312 11.59

2654 611 204,388 12.30
142 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–2.1. L-moments of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0017 0.93432 0.61941 0.66295 0.54114 0.32828 0.24176 5063 0.51714 0.27670 0.53506 0.24643 -0.03861 -0.03435

0026 .56430 .31726 .56221 .43043 .21897 .14435 5068 .38767 .23039 .59429 .43016 .17511 .07963

0179 .48926 .28443 .58135 .55702 .28832 .19099 5108 .62862 .37700 .59972 .49029 .27050 .17587

0188 .44429 .25579 .57572 .47276 .25799 .16588 5329 .86680 .39940 .46078 .28242 .13795 .07637

0215 .50441 .29377 .58240 .46795 .24682 .15362 5463 .40207 .22914 .56990 .55345 .27718 .14765

0242 .47217 .27198 .57602 .44304 .21756 .13055 5581 .90938 .48377 .53198 .32110 .07823 .00352

0256 .61867 .35899 .58026 .48263 .23807 .14648 5582 .52633 .32894 .62498 .50057 .26704 .16903

0260 .70094 .41144 .58699 .41717 .18119 .08954 5589 .52480 .30235 .57613 .52298 .24507 .15371

0292 .58915 .34237 .58113 .51217 .25276 .16307 5648 .45353 .26563 .58568 .53907 .30300 .18756

0293 .55098 .32297 .58618 .51980 .26332 .15908 5662 .51462 .31046 .60330 .45474 .22566 .14422

0296 .49525 .30547 .61680 .47789 .24847 .16163 5664 .56983 .33220 .58299 .51350 .25513 .16229

0535 .53853 .31368 .58249 .52950 .25036 .14937 6130 .54473 .32090 .58911 .46525 .23602 .14429

0537 .52554 .30321 .57695 .53153 .25531 .14482 6328 .59953 .34746 .57955 .46082 .25714 .17942

0670 .63501 .37113 .58445 .48435 .24203 .15019 6391 .51293 .31833 .62061 .47268 .20854 .09001

0814 .47600 .28981 .60884 .45253 .22838 .15021 6485 .52225 .30369 .58151 .47794 .23596 .13809

0908 .35492 .20560 .57929 .54144 .32337 .18851 6612 .48400 .27600 .57025 .48078 .13058 .04385

0912 .30041 .17624 .58668 .46054 .22913 .13185 6616 .52199 .29829 .57144 .49091 .24140 .14641

1148 1.0639 .52849 .49677 .25753 -.01057 -.05245 6620 .52932 .30912 .58400 .53408 .25302 .15335

1168 .65686 .37911 .57716 .44994 .23504 .15164 6627 .57232 .32680 .57101 .47813 .24824 .16510

1391 .75447 .41322 .54770 .41908 .25219 .18735 6638 .55087 .32335 .58698 .48137 .23683 .14041

1436 .60748 .36507 .60095 .47382 .25055 .15446 6643 .63615 .41218 .64792 .54087 .30579 .19506

1437 .60487 .35033 .57917 .50677 .24694 .16876 6656 .39739 .25531 .64247 .47836 .22607 .14026

1544 .61100 .35402 .57941 .48024 .24175 .15040 6661 .44189 .28911 .65426 .49953 .24927 .15710

1684 .53259 .30666 .57579 .49188 .23969 .14581 6729 .53571 .30593 .57108 .44450 .21477 .12785

1688 .57189 .32191 .56289 .44358 .25201 .17974 6740 .34676 .19377 .55881 .52175 .30915 .18871

1750 .52537 .29388 .55938 .47411 .23618 .14716 6760 .56400 .32116 .56944 .44740 .23690 .15700

1855 .59581 .30900 .51862 .36777 .21860 .18082 6859 .55339 .31866 .57583 .47142 .23652 .14357

1891 .82000 .71000 .86585 .93521 .94366 .91549 6926 .81348 .53711 .66027 .53427 .31373 .29647

1900 .52693 .31508 .59797 .45254 .22109 .14159 6935 .52138 .30708 .58897 .50919 .26301 .15816

1902 .59449 .34065 .57302 .50121 .24049 .15851 6940 -- -- -- -- -- --

1909 .60500 .29059 .48031 .20862 .02061 .00786 6944 .51435 .29849 .58032 .49456 .23873 .13499

1954 .64769 .33348 .51488 .38039 .20688 .12418 7080 .59984 .35610 .59365 .46153 .22968 .14254

2145 .57453 .29661 .51626 .32906 .15151 .10940 7196 .54135 .31569 .58315 .48360 .24874 .15364

2242 .92581 .51060 .55152 .37499 .18895 .15381 7201 .43166 .26081 .60420 .46859 .22744 .13430

2309 .53843 .31930 .59302 .43523 .18409 .09469 7309 .56175 .31833 .56668 .49480 .22971 .15513

2334 .49139 .28012 .57006 .53795 .27501 .18737 7358 .53969 .31868 .59048 .46729 .24853 .16204

2500 1.0832 .69777 .64419 .47422 .17909 .03537 7372 .69946 .35965 .51419 .41595 .28045 .22791

2654 .54355 .31225 .57446 .51489 .24576 .16293 7412 .36233 .20208 .55773 .51038 .28351 .16529

2665 .56138 .32676 .58208 .44757 .23256 .15207 7556 .53600 .31692 .59127 .54201 .25750 .15330

2678 .79045 .43634 .55201 .36261 .10354 -.04302 7588 .50851 .29987 .58970 .47203 .25084 .15524

2849 .47157 .27620 .58569 .51806 .28667 .17811 7660 .40312 .22395 .55554 .51418 .27632 .16721

2852 .46221 .26566 .57475 .55512 .27866 .17981 7675 .55794 .31430 .56332 .49616 .23583 .15657

2994 .57021 .34417 .60359 .46189 .22967 .14361 7705 .56522 .32456 .57422 .48330 .23876 .15109

2997 .67700 .40656 .60053 .46623 .24643 .15899 7714 .46788 .27629 .59052 .46518 .23687 .14012

3002 .34509 .18595 .53886 .47436 .25095 .13401 7732 .60160 .34993 .58166 .43807 .21995 .14452

3281 .51559 .30738 .59618 .49925 .26312 .15886 7739 .59637 .33647 .56420 .48807 .23623 .16524

3286 .58382 .33670 .57672 .46075 .23522 .15126 8029 .48292 .27677 .57311 .47496 .24871 .14242

3304 .41713 .24309 .58277 .48517 .25704 .15160 8092 -- -- -- -- -- --

3353 .86889 .44823 .51587 .26660 .09493 .08913 8101 .42624 .24529 .57548 .52694 .27872 .15948

3407 .35963 .24586 .68365 .55294 .31337 .21240 8290 .56230 .31971 .56858 .46525 .23472 .14724

3497 .47754 .27657 .57915 .50437 .27263 .16774 8420 .60874 .33666 .55305 .40578 .20118 .13021

3628 .34043 .19326 .56770 .50247 .27657 .14647 8470 .69803 .37028 .53046 .37716 .20647 .19754

3700 .58096 .33604 .57842 .45749 .24858 .16580 8497 .61352 .35220 .57406 .45617 .22224 .13940

3740 .48110 .28076 .58358 .48062 .25068 .14475 8501 .53628 .31622 .58965 .49242 .26239 .16304

3830 .49839 .28810 .57807 .45616 .25941 .18961 8504 .46132 .25649 .55599 .53110 .27528 .20223

3835 .41797 .24345 .58245 .39359 .14611 .08101 8708 .47789 .27328 .57185 .54865 .28723 .19398

4001 .88700 .42433 .47839 .21603 .13029 .17491 8769 .57213 .33352 .58294 .44670 .21933 .12837

4008 .45740 .27376 .59851 .42469 .14434 .04673 8879 .41133 .25668 .62404 .49418 .25273 .15514

4010 .56516 .33551 .59365 .45939 .23285 .14218 8884 .39700 .20567 .51805 .34603 .03392 -.19152

4051 .53166 .31222 .58725 .48543 .25715 .15760 8992 .46838 .30446 .65004 .48898 .23694 .14856

4052 .59219 .34550 .58342 .51684 .25095 .16346 9014 .54710 .31443 .57473 .46517 .25763 .14410

4098 .54105 .31113 .57504 .46326 .24405 .15816 9023 .62195 .37365 .60077 .46460 .23621 .14893

4202 .48841 .28157 .57649 .52490 .27398 .17365 9247 .73500 .41648 .56664 .45470 .30086 .22507

4204 .38956 .22950 .58912 .48498 .29883 .21606 9278 .72036 .40136 .55717 .40746 .18733 .06507

4384 .63004 .36793 .58398 .46849 .23782 .14955 9300 .88073 .53709 .60982 .41780 .14084 .04904

4386 .58972 .34536 .58563 .44600 .20988 .12785 9364 .64818 .30356 .46833 .27857 .05261 .01394

4388 .49748 .28484 .57257 .48622 .25826 .16153 9404 .44959 .25828 .57449 .47319 .24730 .14491

4393 .52249 .31002 .59336 .47852 .25164 .16010 9450 .59354 .33704 .56784 .49132 .23137 .15112

4506 .54675 .31844 .58241 .46299 .23236 .13968 9503 .47913 .28373 .59217 .46317 .22764 .12990

4692 .49828 .29120 .58440 .43307 .20622 .13127 9629 .51021 .30223 .59236 .48224 .24990 .15191

4812 .52748 .30722 .58242 .46192 .22898 .13668 9719 .66939 .37784 .56446 .43043 .22310 .13442

4865 .58418 .34752 .59489 .46859 .23632 .14345 9724 .56913 .32663 .57392 .51129 .25247 .17416

4969 .46929 .27601 .58814 .45540 .21895 .11328 9748 .55089 .32215 .58479 .52718 .25210 .16377

4975 .62435 .35464 .56800 .46360 .24051 .15777 9762 .41430 .23672 .57138 .45512 .24261 .15163

4978 .53862 .31511 .58504 .49581 .25444 .15733
Appendix 3 143

Appendix 3–2.2. L-moments of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in Oklahoma. 

[--, not available]

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0017 1.0168 0.65931 0.64844 0.52578 0.30740 0.21900 5063 0.51714 0.27670 0.53506 0.24643 -0.03861 -0.03435

0026 .59494 .33423 .56178 .43783 .23587 .16371 5068 .40598 .23595 .58118 .41497 .16626 .07360

0179 .52225 .30330 .58076 .54108 .27592 .18419 5108 .66731 .39764 .59588 .48399 .26472 .17208

0188 .46762 .26870 .57461 .47307 .25979 .16728 5329 .90292 .40658 .45029 .25306 .13059 .08247

0215 .52984 .30617 .57786 .46435 .24721 .15572 5463 .42608 .24277 .56979 .53953 .26289 .14158

0242 .49076 .28074 .57204 .43889 .21554 .13031 5581 .93871 .48559 .51730 .31418 .07189 .00288

0256 .65939 .38207 .57944 .47772 .23710 .14797 5582 .55548 .34673 .62420 .49706 .26069 .15893

0260 .74767 .42134 .56355 .39165 .18142 .08567 5589 .56450 .32508 .57588 .50858 .23516 .14786

0292 .63461 .36502 .57519 .49400 .24208 .15824 5648 .47878 .27931 .58338 .52949 .29397 .18365

0293 .58096 .33839 .58247 .50823 .25732 .16096 5662 .55082 .32971 .59857 .45071 .22783 .14845

0296 .53351 .32963 .61785 .48320 .25844 .17262 5664 .61001 .35274 .57826 .49892 .24632 .16058

0535 .58187 .33892 .58246 .51351 .23771 .14284 6130 .57790 .33735 .58375 .45884 .23462 .14807

0537 .56058 .32199 .57438 .51568 .24373 .13591 6328 .62616 .36147 .57728 .45933 .25594 .17737

0670 .67514 .39271 .58168 .47509 .23572 .14790 6391 .53923 .34356 .63713 .49586 .22519 .07997

0814 .48407 .29152 .60223 .44965 .22768 .14960 6485 .55643 .32139 .57759 .46745 .22753 .13546

0908 .36729 .21212 .57752 .53238 .31253 .18267 6612 .52609 .29447 .55973 .43739 .10336 .05887

0912 .31309 .18245 .58273 .45465 .22484 .12952 6616 .55500 .31447 .56661 .47753 .23297 .14530

1148 1.0639 .52849 .49677 .25753 -.01057 -.05245 6620 .56537 .33002 .58372 .52159 .24686 .15360

1168 .69524 .40031 .57579 .44758 .23422 .15113 6627 .60959 .34764 .57028 .47113 .24350 .16287

1391 .81914 .43829 .53505 .39631 .22806 .17069 6638 .58728 .34226 .58279 .47022 .22932 .13893

1436 .63401 .37989 .59919 .47424 .25451 .16032 6643 .65182 .42316 .64920 .54454 .30694 .19047

1437 .64945 .37256 .57366 .48744 .23443 .16130 6656 .42559 .27051 .63562 .46921 .22112 .13710

1544 .65634 .37653 .57368 .46655 .23312 .14801 6661 .47369 .30606 .64613 .48835 .24257 .15664

1684 .56512 .32444 .57411 .48272 .23594 .14826 6729 .56453 .32051 .56776 .44246 .21940 .13747

1688 .61588 .33893 .55032 .42567 .24264 .17337 6740 .35982 .20026 .55655 .51107 .29634 .18337

1750 .55682 .31165 .55969 .46782 .23103 .14621 6760 .59359 .33469 .56384 .44528 .23619 .15513

1855 .65692 .31455 .47882 .34482 .24076 .17981 6859 .58846 .33776 .57398 .46556 .23357 .14459

1891 .82000 .71000 .86585 .93521 .94366 .91549 6926 .89095 .60681 .68108 .54293 .29124 .24738

1900 .55337 .32782 .59240 .44634 .21930 .14408 6935 .55914 .32767 .58602 .50040 .25837 .16053

1902 .63288 .36154 .57127 .48728 .23052 .15388 6940 -- -- -- -- -- --

1909 .64821 .29242 .45112 .16903 .02911 .00086 6944 .55063 .31836 .57818 .48242 .23267 .13792

1954 .70167 .34557 .49250 .35108 .19298 .11391 7080 .63207 .37279 .58980 .45605 .22703 .14313

2145 .60394 .30282 .50141 .31676 .14903 .10613 7196 .57339 .33190 .57884 .47412 .24460 .15547

2242 .98966 .52172 .52718 .34692 .19507 .16402 7201 .45331 .27500 .60666 .47366 .23629 .14190

2309 .57655 .33971 .58921 .42669 .18568 .11264 7309 .60456 .34084 .56378 .47880 .22122 .15173

2334 .52626 .29902 .56819 .51965 .26114 .17962 7358 .56640 .33299 .58791 .46419 .24763 .16104

2500 1.1348 .71462 .62975 .45497 .16747 .02731 7372 .80875 .39581 .48941 .38811 .28569 .20157

2654 .57450 .32934 .57326 .50340 .23895 .15964 7412 .38137 .21255 .55734 .50666 .28094 .16969

2665 .59167 .34594 .58469 .45507 .24285 .16176 7556 .57917 .34422 .59433 .53104 .24835 .14668

2678 .82810 .43867 .52973 .35841 .08956 -.05482 7588 .53127 .31317 .58947 .47406 .25522 .15960

2849 .50084 .29342 .58585 .51195 .28330 .18051 7660 .42394 .23502 .55437 .50875 .27402 .17200

2852 .50860 .29338 .57684 .53411 .25915 .16394 7675 .59662 .33510 .56167 .48164 .22525 .14895

2994 .59995 .36002 .60009 .45788 .22740 .13903 7705 .59670 .33991 .56966 .47271 .23251 .15119

2997 .70154 .41647 .59364 .45592 .23931 .15543 7714 .49224 .28692 .58287 .45993 .23683 .14154

3002 .35934 .19366 .53895 .47073 .24638 .13416 7732 .62784 .36424 .58014 .44126 .22774 .15241

3281 .54863 .32619 .59455 .49551 .26200 .16153 7739 .63426 .35804 .56450 .48201 .23725 .16847

3286 .61844 .35516 .57428 .45684 .23466 .15468 8029 .50641 .29041 .57347 .47322 .24589 .14146

3304 .43742 .25393 .58051 .48102 .25538 .15523 8092 -- -- -- -- -- --

3353 1.0664 .52446 .49182 .18708 .03368 .07722 8101 .45067 .25838 .57331 .51455 .26710 .15404

3407 .39184 .26417 .67416 .53877 .30153 .20360 8290 .59297 .33538 .56560 .46135 .23391 .14687

3497 .51408 .29640 .57657 .49700 .26841 .16897 8420 .63445 .34852 .54932 .40476 .20402 .13218

3628 .35730 .20182 .56485 .49727 .26957 .14563 8470 .77418 .38807 .50127 .34230 .19784 .20443

3700 .61241 .35297 .57636 .45552 .24890 .16759 8497 .65543 .37376 .57025 .44868 .21851 .14028

3740 .50760 .29484 .58084 .47470 .24640 .14390 8501 .56867 .33224 .58424 .47844 .25193 .15850

3830 .53006 .30564 .57662 .46028 .26926 .20184 8504 .48576 .26807 .55186 .51232 .26459 .20279

3835 .43297 .25150 .58087 .39103 .14410 .07583 8708 .50918 .29052 .57057 .53162 .27383 .18624

4001 .98556 .50278 .51015 .17869 -.05604 .01184 8769 .61054 .35380 .57949 .44246 .21806 .13006

4008 .50822 .28516 .56110 .38584 .12518 .03927 8879 .43079 .26422 .61335 .48043 .24519 .15230

4010 .59450 .35154 .59131 .45929 .23467 .14197 8884 .39700 .20567 .51805 .34603 .03392 -.19152

4051 .56160 .32645 .58130 .47292 .24519 .15041 8992 .50155 .32192 .64185 .47771 .22915 .14567

4052 .63577 .36869 .57991 .49869 .23763 .15676 9014 .56343 .32845 .58295 .48948 .28637 .16849

4098 .57300 .32638 .56960 .45303 .23505 .15218 9023 .65794 .39153 .59508 .45832 .23323 .14918

4202 .51928 .29893 .57566 .51267 .26542 .17029 9247 .80613 .44563 .55281 .41703 .26206 .22730

4204 .42190 .24415 .57869 .48089 .29884 .20754 9278 .80680 .43713 .54181 .36381 .12874 .01768

4384 .67029 .38907 .58045 .46134 .23349 .14931 9300 .97595 .57084 .58491 .38260 .13046 .05658

4386 .62473 .36409 .58280 .44265 .21015 .13093 9364 .69000 .32535 .47153 .27982 .03728 -.00196

4388 .53192 .30294 .56953 .47976 .24909 .15853 9404 .47564 .27185 .57156 .46876 .24442 .14659

4393 .55067 .32411 .58857 .47084 .24858 .16258 9450 .63175 .35796 .56662 .47987 .22341 .14456

4506 .57627 .33190 .57595 .44998 .22028 .13247 9503 .50801 .29677 .58418 .45429 .21976 .12667

4692 .52157 .30242 .57982 .42578 .20071 .12798 9629 .54055 .31853 .58927 .47564 .24484 .15114

4812 .55602 .32232 .57969 .45881 .22934 .14033 9719 .70343 .39312 .55886 .42507 .21921 .13192

4865 .62092 .36660 .59041 .46227 .23276 .14341 9724 .61386 .35498 .57828 .50847 .25652 .18014

4969 .48912 .28383 .58029 .44192 .20557 .10519 9748 .59500 .34466 .57926 .50401 .23672 .15836

4975 .66548 .37488 .56332 .45594 .23952 .16037 9762 .43183 .24600 .56967 .45111 .23961 .15135

4978 .57353 .33558 .58512 .49149 .25341 .16054
144 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–2.3. L-moments of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0017 1.2804 0.82123 0.64140 0.50749 0.23615 0.08219 5063 0.60333 0.31985 0.53014 0.22643 -0.09648 -0.10793

0026 .63883 .35691 .55870 .43387 .23541 .16344 5068 .45228 .25181 .55676 .38224 .14306 .06192

0179 .57541 .33352 .57962 .52222 .26535 .18024 5108 .72190 .42872 .59387 .47838 .25839 .16716

0188 .51247 .29445 .57458 .47630 .27107 .17941 5329 .98500 .42374 .43020 .21822 .08504 .06630

0215 .56128 .32298 .57542 .46056 .24601 .15655 5463 .47156 .26903 .57051 .51674 .24287 .13316

0242 .53069 .30394 .57272 .45220 .23790 .15184 5581 1.0778 .52809 .48998 .24328 .03660 -.00277

0256 .72129 .41748 .57880 .47177 .23660 .14999 5582 .58805 .36124 .61430 .48353 .25032 .15240

0260 .86269 .47565 .55135 .32877 .11006 .06951 5589 .61600 .35224 .57181 .49273 .23409 .15560

0292 .69553 .39795 .57215 .48296 .23841 .15892 5648 .51730 .30043 .58075 .51606 .28449 .17942

0293 .63411 .36395 .57396 .48735 .24790 .15968 5662 .59061 .34774 .58878 .43846 .22502 .15048

0296 .58372 .36292 .62174 .47946 .24617 .16029 5664 .67133 .38691 .57633 .48288 .23151 .14846

0535 .63664 .37256 .58519 .50043 .22609 .13539 6130 .62967 .36424 .57845 .45000 .23048 .14944

0537 .60437 .34828 .57626 .50119 .22506 .11636 6328 .67808 .38659 .57013 .45381 .25770 .17898

0670 .74011 .42799 .57827 .46556 .23198 .14741 6391 .58417 .38717 .66277 .57130 .37039 .26520

0814 .50105 .29700 .59274 .44171 .22805 .15114 6485 .60825 .34736 .57108 .45318 .21939 .13624

0908 .39285 .22953 .58426 .53534 .31244 .18312 6612 .57619 .31619 .54876 .40029 .09242 .08195

0912 .32605 .18938 .58082 .45368 .22895 .13589 6616 .60132 .34024 .56583 .46946 .23125 .14872

1148 1.3192 .56897 .43130 .10453 -.04771 .00621 6620 .62278 .36367 .58394 .50728 .24152 .15535

1168 .75337 .42926 .56978 .43905 .22899 .14820 6627 .66303 .37602 .56712 .45717 .23228 .15495

1391 .95567 .54645 .57180 .42416 .17336 .07148 6638 .64074 .37115 .57925 .45698 .21928 .13604

1436 .68835 .41120 .59737 .47327 .25420 .15817 6643 .74757 .48162 .64425 .51815 .26885 .16439

1437 .72238 .40997 .56752 .46768 .22604 .15597 6656 .46929 .29739 .63369 .46758 .22478 .14854

1544 .72315 .41174 .56937 .45451 .22628 .14782 6661 .52468 .33435 .63725 .47600 .23643 .15835

1684 .61968 .35450 .57207 .47177 .23336 .15249 6729 .60725 .34104 .56162 .42967 .21001 .13418

1688 .67524 .36448 .53978 .40628 .22290 .15005 6740 .38010 .21164 .55681 .50172 .28583 .17872

1750 .60943 .34176 .56078 .45881 .22466 .14280 6760 .63413 .35570 .56093 .44376 .23635 .15335

1855 .91500 .45241 .49443 .34334 .19201 .09992 6859 .63782 .36312 .56931 .45529 .23041 .14811

1891 -- -- -- -- -- -- 6926 .98474 .68058 .69113 .54679 .27801 .20083

1900 .59326 .35048 .59077 .44599 .22210 .14642 6935 .61479 .35566 .57851 .48055 .24631 .15897

1902 .70228 .39468 .56199 .46296 .22084 .15296 6940 -- -- -- -- -- --

1909 .75625 .38332 .50686 .23200 .04301 .07437 6944 .60589 .34703 .57276 .46413 .21955 .13524

1954 .87103 .45192 .51883 .35843 .15362 .05361 7080 .68161 .39891 .58524 .45097 .22861 .15013

2145 .64726 .31631 .48869 .30090 .14480 .09538 7196 .61556 .35474 .57628 .46924 .24580 .16123

2242 1.0630 .53422 .50257 .32086 .19659 .16380 7201 .47894 .28734 .59994 .45701 .22143 .13446

2309 .62344 .36197 .58060 .42261 .18934 .11544 7309 .66822 .37432 .56018 .45879 .21013 .14731

2334 .56444 .32426 .57449 .51842 .26329 .18047 7358 .61212 .35929 .58696 .46762 .25271 .16222

2500 1.2542 .74094 .59076 .43083 .14344 .00571 7372 .99538 .52846 .53091 .39518 .19360 .07432

2654 .62953 .35953 .57111 .48636 .23140 .16054 7412 .41073 .22885 .55717 .49583 .26871 .16237

2665 .62681 .36449 .58151 .44935 .23890 .16209 7556 .62458 .37427 .59924 .52790 .24939 .14680

2678 .96611 .50193 .51953 .27333 -.03379 -.13438 7588 .56160 .32984 .58732 .46900 .25421 .16215

2849 .54114 .31677 .58537 .50262 .27611 .17890 7660 .45300 .25167 .55557 .50288 .27108 .17368

2852 .54788 .31434 .57374 .51455 .24797 .16261 7675 .65923 .36817 .55849 .46345 .21696 .14743

2994 .65406 .39529 .60436 .46605 .24048 .15089 7705 .65294 .36865 .56460 .46112 .22841 .15300

2997 .74906 .44590 .59528 .45288 .23336 .14841 7714 .53125 .30660 .57713 .45414 .23335 .13860

3002 .38372 .20682 .53899 .46412 .24102 .13570 7732 .67033 .38487 .57415 .43850 .23300 .15886

3281 .59039 .35076 .59411 .49069 .25849 .16191 7739 .69025 .38751 .56140 .46905 .23307 .16705

3286 .66592 .38187 .57344 .45300 .23344 .15462 8029 .53496 .30605 .57209 .46685 .24295 .14418

3304 .46920 .27039 .57627 .46792 .24217 .14807 8092 -- -- -- -- -- --

3353 1.1730 .58537 .49904 .21435 .03190 .01736 8101 .48252 .27587 .57172 .50058 .25458 .14786

3407 .43849 .29228 .66655 .52853 .29423 .19922 8290 .64732 .36400 .56231 .45086 .22717 .14493

3497 .56179 .32491 .57834 .49404 .27008 .17525 8420 .67646 .37385 .55265 .41717 .22623 .15831

3628 .38581 .21877 .56703 .48592 .25626 .14223 8470 .80340 .39164 .48748 .33233 .20554 .20972

3700 .65242 .37665 .57731 .45644 .25315 .17329 8497 .71859 .40843 .56838 .44648 .22259 .14490

3740 .54784 .31641 .57756 .46517 .24158 .14397 8501 .60840 .35424 .58225 .47305 .24986 .16005

3830 .55475 .31967 .57625 .45916 .26532 .19667 8504 .54133 .30332 .56032 .50266 .25417 .18631

3835 .48626 .28897 .59427 .41562 .16190 .07437 8708 .55670 .31812 .57143 .51525 .26290 .18065

4001 1.1087 .48982 .44178 .13963 -.06526 .06817 8769 .65423 .37963 .58027 .44369 .22214 .13342

4008 .60184 .32590 .54150 .35556 .10273 .03712 8879 .47417 .28999 .61158 .48265 .24945 .15624

4010 .64667 .38193 .59061 .46499 .24077 .14462 8884 .49625 .29446 .59338 .71134 .49909 .41419

4051 .60894 .35014 .57500 .45850 .23179 .14045 8992 .55170 .35071 .63569 .47174 .22932 .14902

4052 .69076 .39784 .57594 .48105 .22692 .15173 9014 .58984 .34103 .57818 .47665 .26900 .14868

4098 .62143 .35405 .56974 .45648 .24287 .15955 9023 .72348 .42499 .58743 .44976 .23000 .14901

4202 .56773 .32810 .57791 .50316 .26146 .16978 9247 .89250 .47618 .53353 .38186 .23414 .22398

4204 .44661 .25713 .57574 .46946 .28174 .19017 9278 .87696 .46257 .52747 .30555 .08822 .02523

4384 .73048 .41958 .57439 .44933 .22466 .14409 9300 1.1284 .60870 .53942 .32641 .09997 .03252

4386 .67946 .39174 .57656 .43504 .20987 .13625 9364 .76393 .33414 .43740 .21425 .00491 .04408

4388 .60130 .33908 .56391 .45140 .22010 .14179 9404 .51352 .29333 .57121 .46353 .23747 .14056

4393 .59810 .35160 .58786 .46799 .24998 .16687 9450 .69131 .38824 .56160 .46514 .21992 .14233

4506 .62796 .36134 .57542 .44441 .21544 .13420 9503 .56402 .32765 .58093 .44663 .21492 .12880

4692 .56218 .32071 .57047 .41243 .19740 .13093 9629 .58930 .34632 .58768 .46956 .24125 .15144

4812 .60419 .34749 .57513 .45005 .22515 .14030 9719 .74541 .41250 .55339 .41713 .21346 .12992

4865 .67377 .39433 .58526 .45267 .22773 .14185 9724 .66861 .38127 .57024 .48578 .24263 .16975

4969 .50883 .29314 .57610 .43565 .19631 .09607 9748 .66006 .37902 .57421 .48022 .22211 .15142

4975 .73316 .40900 .55786 .44337 .23056 .14890 9762 .45776 .25986 .56766 .44475 .23457 .14869

4978 .62736 .36587 .58319 .48141 .25133 .16490
Appendix 3 145

Appendix 3–2.4. L-moments of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0017 1.5030 0.96372 0.64118 0.51620 0.24697 0.06539 5063 0.65818 0.32309 0.49088 0.16151 -0.10204 -0.09848

0026 .70566 .39718 .56285 .43825 .24453 .17249 5068 .50058 .27198 .54333 .33874 .10209 .05207

0179 .63955 .37122 .58044 .50779 .25613 .17091 5108 .79166 .46444 .58667 .46330 .24617 .15984

0188 .56049 .32312 .57650 .47330 .26528 .17410 5329 1.1405 .47047 .41250 .13120 .05048 .11910

0215 .60989 .34776 .57021 .45205 .24292 .15774 5463 .51210 .29249 .57117 .50067 .23134 .12648

0242 .57356 .32682 .56981 .44287 .22969 .14621 5581 1.3857 .66910 .48285 .27683 .12293 .07773

0256 .80191 .46077 .57459 .45824 .22673 .14328 5582 .64246 .39527 .61524 .47676 .23870 .14527

0260 .93458 .56451 .60402 .40997 .14489 .04058 5589 .68716 .38806 .56474 .46747 .21936 .14741

0292 .79140 .45081 .56964 .46567 .22116 .13464 5648 .57055 .33062 .57948 .50283 .27319 .17484

0293 .69551 .40046 .57577 .48150 .24411 .15404 5662 .65823 .38739 .58854 .43651 .22234 .14442

0296 .64892 .40761 .62814 .49112 .26125 .17256 5664 .74272 .42347 .57016 .46298 .22122 .14184

0535 .70913 .41165 .58050 .47723 .20979 .12694 6130 .69576 .39814 .57224 .43335 .21645 .13979

0537 .66460 .37809 .56889 .46957 .19408 .09494 6328 .73805 .41823 .56666 .43915 .24273 .16704

0670 .81395 .46634 .57294 .45177 .22383 .14268 6391 .63727 .40657 .63799 .54947 .36819 .26534

0814 .52889 .30509 .57684 .42191 .21909 .15340 6485 .66593 .37937 .56968 .44784 .22207 .14168

0908 .42488 .24989 .58814 .52850 .30448 .18150 6612 .67222 .42255 .62859 .54505 .24575 .14018

0912 .34860 .20334 .58329 .45968 .23962 .14591 6616 .65777 .37121 .56434 .46129 .22996 .15273

1148 1.4339 .62751 .43762 .09358 -.06265 -.00532 6620 .67731 .39289 .58007 .48839 .22980 .15195

1168 .82867 .47158 .56908 .43669 .22847 .14613 6627 .72897 .40821 .55998 .43962 .22033 .14968

1391 1.1027 .65392 .59302 .47285 .24162 .14543 6638 .69821 .40445 .57928 .45122 .21572 .13501

1436 .74890 .44873 .59919 .47118 .24745 .14951 6643 .83747 .53489 .63870 .50835 .26398 .16229

1437 .81526 .45289 .55552 .43984 .21219 .14654 6656 .51876 .32077 .61835 .44726 .21400 .14796

1544 .81304 .45867 .56414 .43884 .21700 .14331 6661 .57985 .36444 .62851 .46544 .23166 .15694

1684 .67791 .38360 .56586 .45292 .22047 .14360 6729 .65610 .37067 .56495 .43137 .21337 .13745

1688 .70943 .38535 .54318 .41496 .23615 .16148 6740 .41000 .22782 .55565 .49141 .28006 .18026

1750 .66778 .37421 .56038 .44882 .21835 .14165 6760 .68126 .37709 .55352 .43137 .22465 .14475

1855 1.1139 .54838 .49230 .33141 .14158 .03419 6859 .69965 .39597 .56596 .44293 .21608 .13665

1891 -- -- -- -- -- -- 6926 1.1694 .76079 .65060 .48425 .24807 .22481

1900 .64392 .37851 .58781 .43898 .21802 .14687 6935 .67504 .38739 .57388 .46516 .23539 .15359

1902 .76726 .42650 .55587 .44750 .21349 .14645 6940 -- -- -- -- -- --

1909 .82500 .41275 .50030 .23558 .08475 .13814 6944 .66508 .37882 .56958 .44923 .20908 .13184

1954 1.1482 .59528 .51846 .26682 .03399 .01083 7080 .75965 .44402 .58451 .44682 .22444 .14591

2145 .70046 .34707 .49548 .31329 .15415 .09773 7196 .66819 .38091 .57007 .45335 .23355 .15626

2242 1.1038 .56692 .51359 .31228 .15354 .12589 7201 .53362 .31902 .59784 .46470 .25071 .16937

2309 .67865 .39456 .58139 .41427 .17388 .10475 7309 .73791 .40972 .55524 .44400 .20916 .15017

2334 .61855 .35456 .57321 .49925 .24819 .17133 7358 .66587 .38809 .58283 .45591 .24170 .15502

2500 1.4018 .84537 .60307 .44208 .14732 -.00329 7372 1.0783 .61772 .57284 .43764 .18492 .02284

2654 .71497 .40211 .56241 .45751 .21767 .15813 7412 .44544 .24848 .55784 .48458 .25899 .15624

2665 .68200 .39371 .57729 .44565 .23830 .16184 7556 .69040 .41228 .59716 .50792 .22977 .12644

2678 1.3377 .73500 .54945 .26521 -.02559 -.01580 7588 .61585 .36166 .58725 .47006 .25367 .15363

2849 .60075 .35464 .59032 .50212 .27680 .18049 7660 .49439 .27345 .55310 .48762 .25693 .16455

2852 .60127 .34199 .56877 .49028 .23463 .16018 7675 .72528 .40407 .55713 .45219 .21362 .14474

2994 .72515 .43804 .60406 .47128 .25127 .15966 7705 .71641 .40270 .56210 .44975 .22363 .15196

2997 .80628 .47494 .58905 .44278 .22528 .13839 7714 .56634 .32828 .57965 .45366 .22839 .12881

3002 .41407 .22501 .54342 .46037 .23817 .13493 7732 .71897 .40863 .56836 .42835 .22434 .15124

3281 .63816 .37825 .59273 .48355 .25320 .15971 7739 .76958 .42982 .55851 .45631 .22961 .16366

3286 .73202 .41608 .56840 .44170 .22554 .14829 8029 .57225 .32639 .57036 .46396 .24458 .15101

3304 .51033 .29289 .57392 .45767 .23286 .14336 8092 -- -- -- -- -- --

3353 1.3033 .63379 .48628 .19970 .00761 -.01681 8101 .52261 .29874 .57163 .48681 .24103 .13999

3407 .48607 .31275 .64342 .50112 .27649 .18949 8290 .71401 .40236 .56352 .44716 .22620 .14531

3497 .61084 .35291 .57775 .48697 .26874 .17846 8420 .72650 .39732 .54690 .40661 .21990 .15607

3628 .41822 .23893 .57129 .48503 .25734 .14901 8470 .88708 .41922 .47258 .31240 .20356 .19986

3700 .70140 .40333 .57504 .45730 .25798 .17778 8497 .78629 .44123 .56115 .43029 .21107 .13761

3740 .58767 .33819 .57549 .45729 .23460 .14046 8501 .66376 .38358 .57789 .46184 .24078 .15538

3830 .60726 .34937 .57532 .46086 .27983 .22037 8504 .60620 .33420 .55131 .47325 .23510 .16992

3835 .54183 .31920 .58912 .39116 .13188 .05774 8708 .60696 .34548 .56919 .50146 .25861 .18151

4001 1.4783 .69233 .46832 .09581 -.03996 .12277 8769 .71101 .41035 .57714 .43583 .21596 .13010

4008 .69303 .38049 .54903 .32939 .05576 .01736 8879 .51338 .31072 .60524 .47395 .24723 .15976

4010 .70153 .41169 .58685 .45740 .23648 .14860 8884 .56714 .33286 .58690 .62747 .40773 .43920

4051 .66712 .38384 .57536 .45253 .22587 .13511 8992 .61318 .38409 .62640 .45909 .22295 .14849

4052 .76662 .44021 .57422 .46868 .22392 .15272 9014 .60887 .34726 .57034 .46884 .26375 .14037

4098 .67522 .38429 .56913 .45187 .24075 .15776 9023 .79537 .46103 .57963 .43724 .22205 .14408

4202 .63116 .36549 .57908 .49188 .25274 .16361 9247 .92556 .47769 .51611 .38100 .24216 .22797

4204 .48963 .27866 .56912 .45325 .26573 .17889 9278 1.0616 .49257 .46400 .18946 .05420 .04935

4384 .81067 .46475 .57328 .44561 .22631 .14709 9300 1.2896 .74142 .57490 .41827 .22374 .16967

4386 .75537 .43448 .57519 .43304 .21345 .13975 9364 .89125 .42172 .47318 .27725 .10850 .18686

4388 .63440 .35763 .56372 .43812 .19763 .11859 9404 .55897 .31837 .56957 .45198 .22696 .13461

4393 .65093 .37858 .58160 .45523 .24158 .16285 9450 .76516 .42583 .55653 .44647 .20756 .13228

4506 .69115 .39289 .56846 .43133 .20974 .13446 9503 .62971 .36802 .58442 .45440 .22605 .13975

4692 .59296 .33634 .56723 .41136 .20088 .13646 9629 .64441 .37880 .58782 .46237 .23244 .14349

4812 .65601 .37515 .57187 .44465 .22383 .14275 9719 .79109 .43395 .54854 .40982 .20793 .12603

4865 .73807 .42989 .58245 .44502 .22102 .13878 9724 .74477 .42544 .57124 .47689 .23975 .16644

4969 .55787 .32337 .57964 .44394 .21060 .11999 9748 .74046 .42335 .57174 .46369 .21216 .14022

4975 .79762 .44102 .55292 .42934 .22140 .14163 9762 .48626 .27690 .56944 .44043 .22934 .14445

4978 .68551 .39636 .57820 .46775 .24295 .16272
146 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–2.5. L-moments of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0017 1.8195 1.1563 0.63549 0.44114 0.11919 -0.05017 5063 0.80444 0.31472 0.39123 0.08486 -0.14929 -0.02370

0026 .76659 .42387 .55293 .42986 .24303 .16837 5068 .56659 .30574 .53960 .33361 .09845 .04072

0179 .69275 .39961 .57684 .49286 .24635 .16084 5108 .85367 .49735 .58260 .45445 .24015 .15478

0188 .59813 .34788 .58160 .47463 .26110 .16442 5329 1.2039 .55010 .45693 .22414 .06936 .05528

0215 .64244 .36569 .56921 .44771 .23734 .15179 5463 .56026 .32025 .57161 .48401 .21720 .11677

0242 .61038 .35288 .57814 .45680 .24658 .16045 5581 1.6167 .72098 .44597 .27465 .16332 .11580

0256 .87537 .49900 .57004 .44621 .21961 .14012 5582 .69169 .42882 .61997 .48881 .25675 .16284

0260 .97522 .57237 .58692 .39657 .14259 .02914 5589 .74623 .42041 .56337 .45827 .21836 .14971

0292 .85237 .47996 .56310 .45058 .21449 .13218 5648 .61866 .35910 .58045 .49796 .27006 .17338

0293 .75680 .43313 .57232 .46864 .23793 .15133 5662 .72431 .42230 .58304 .43395 .22307 .14168

0296 .68795 .43343 .63004 .49469 .26427 .17058 5664 .80475 .45385 .56397 .45550 .22803 .14906

0535 .75875 .43941 .57913 .46603 .20190 .12214 6130 .74900 .42559 .56821 .42388 .20996 .13642

0537 .73536 .41072 .55853 .44832 .18946 .09700 6328 .77439 .43457 .56117 .43416 .23990 .16271

0670 .88352 .50284 .56914 .44258 .22148 .14221 6391 .75107 .46951 .62512 .52122 .34496 .23427

0814 .58286 .34339 .58915 .44417 .23903 .16462 6485 .72577 .40946 .56417 .43561 .21484 .13588

0908 .46855 .27784 .59299 .52772 .30565 .18841 6612 .71176 .44485 .62500 .51669 .20638 .12028

0912 .38538 .22923 .59480 .48102 .26906 .17801 6616 .70580 .39575 .56072 .45402 .22893 .15392

1148 1.5705 .81143 .51668 .28398 .08214 .07883 6620 .73749 .42204 .57226 .46849 .21997 .14489

1168 .89530 .50400 .56294 .43055 .22731 .14651 6627 .77753 .43753 .56272 .43989 .22559 .15750

1391 1.3032 .75556 .57978 .40094 .15445 .09705 6638 .76201 .43728 .57386 .43813 .21109 .13177

1436 .81288 .48770 .59996 .47169 .24563 .14407 6643 .90014 .57173 .63516 .49542 .24466 .14241

1437 .89745 .49016 .54616 .41935 .20353 .14378 6656 .57296 .35411 .61804 .45289 .23057 .16983

1544 .89170 .50204 .56301 .43214 .21288 .13878 6661 .62856 .39268 .62472 .46246 .23438 .16257

1684 .72981 .41120 .56344 .44450 .21618 .13924 6729 .71182 .39783 .55889 .42335 .21268 .13962

1688 .79496 .42778 .53811 .39969 .22288 .14229 6740 .44386 .25116 .56586 .49307 .27874 .17440

1750 .71903 .39967 .55584 .43963 .21826 .14706 6760 .72201 .39988 .55383 .42706 .22014 .14117

1855 1.1139 .54838 .49230 .33141 .14158 .03419 6859 .74991 .42344 .56466 .43657 .21332 .13798

1891 -- -- -- -- -- -- 6926 1.3364 .84577 .63286 .46118 .22834 .22570

1900 .68627 .40099 .58430 .43283 .21301 .14334 6935 .72326 .41475 .57345 .45902 .23252 .15302

1902 .82711 .45533 .55050 .43526 .20985 .14465 6940 -- -- -- -- -- --

1909 .90750 .41545 .45779 .20829 .10831 .14665 6944 .71384 .40534 .56783 .44167 .20695 .13356

1954 1.4033 .67229 .47906 .17288 -.07267 -.03425 7080 .82549 .47674 .57752 .43817 .22414 .14847

2145 .74466 .37610 .50507 .32432 .15321 .08681 7196 .70788 .40119 .56675 .44681 .23093 .15783

2242 1.3045 .63442 .48631 .27640 .11204 .06804 7201 .59188 .35168 .59418 .46570 .25104 .16208

2309 .77560 .44535 .57421 .42471 .19341 .11478 7309 .79086 .43821 .55409 .43607 .20457 .14447

2334 .66745 .38592 .57820 .49794 .25097 .17316 7358 .72474 .41946 .57877 .44399 .22970 .14662

2500 1.8331 .97603 .53245 .30526 .06298 -.05643 7372 1.1764 .65208 .55432 .39685 .13802 -.00445

2654 .78381 .43714 .55771 .44532 .21514 .15415 7412 .48075 .27093 .56357 .48300 .25610 .15158

2665 .72287 .42186 .58359 .45505 .24831 .17007 7556 .75979 .44385 .58417 .47394 .20448 .11535

2678 1.3377 .73500 .54945 .26521 -.02559 -.01580 7588 .64955 .38487 .59252 .47515 .25342 .15048

2849 .64458 .37917 .58824 .49726 .27493 .18097 7660 .53407 .29642 .55502 .48298 .25975 .16939

2852 .65694 .37033 .56372 .46636 .21282 .13924 7675 .77738 .43245 .55629 .44515 .21314 .14689

2994 .78487 .46984 .59862 .46465 .24732 .15255 7705 .77518 .43365 .55942 .44011 .21829 .14934

2997 .86323 .51314 .59444 .44123 .21797 .13704 7714 .61244 .36151 .59028 .47318 .25235 .15067

3002 .44653 .24435 .54723 .45454 .23300 .13310 7732 .77131 .43177 .55979 .41355 .21260 .14408

3281 .68720 .40720 .59255 .47899 .25159 .16096 7739 .82953 .46006 .55460 .44583 .22722 .16310

3286 .78411 .44172 .56333 .43336 .22373 .14979 8029 .60812 .34545 .56807 .45655 .24161 .15138

3304 .54817 .31356 .57202 .44561 .22143 .13840 8092 -- -- -- -- -- --

3353 1.3800 .74625 .54076 .32833 .12559 .07402 8101 .56592 .32365 .57190 .47571 .23263 .13696

3407 .53296 .33941 .63684 .49106 .26735 .17914 8290 .75690 .42713 .56431 .44381 .22402 .14425

3497 .65688 .37892 .57685 .48300 .27128 .18359 8420 .76686 .41214 .53744 .39962 .21943 .15444

3628 .45115 .25793 .57172 .47607 .24682 .14255 8470 .92565 .45064 .48683 .32296 .19713 .19229

3700 .75607 .43552 .57603 .46188 .26380 .18038 8497 .84808 .47379 .55866 .42582 .21122 .13778

3740 .62741 .36208 .57710 .45455 .23156 .13791 8501 .71599 .41242 .57601 .45563 .23801 .15734

3830 .64816 .36922 .56965 .45009 .27234 .21473 8504 .64342 .35619 .55359 .48006 .26021 .19790

3835 .60395 .36094 .59763 .41652 .17058 .10148 8708 .65779 .37352 .56783 .48939 .25305 .17825

4001 1.4783 .69233 .46832 .09581 -.03996 .12277 8769 .76961 .43761 .56862 .42358 .20998 .12909

4008 .69303 .38049 .54903 .32939 .05576 .01736 8879 .56664 .33899 .59824 .46324 .23222 .14203

4010 .75412 .44127 .58514 .45379 .23319 .14515 8884 .56714 .33286 .58690 .62747 .40773 .43920

4051 .72233 .41743 .57789 .44712 .21659 .12666 8992 .66302 .41300 .62291 .45698 .22528 .15169

4052 .83394 .47596 .57073 .45408 .21244 .14156 9014 .69907 .38501 .55075 .44029 .22870 .09351

4098 .72320 .40921 .56583 .44497 .23676 .15345 9023 .86524 .49825 .57586 .42964 .21607 .14035

4202 .68073 .39497 .58021 .48835 .25250 .16410 9247 1.0865 .52830 .48623 .32774 .24345 .22690

4204 .53370 .30258 .56695 .44019 .24799 .16587 9278 1.1865 .51316 .43251 .12314 .02018 .05302

4384 .87690 .50068 .57097 .43830 .22141 .14487 9300 1.5046 .78531 .52194 .37844 .22197 .18494

4386 .82545 .46930 .56854 .42193 .21022 .14203 9364 .89125 .42172 .47318 .27725 .10850 .18686

4388 .70561 .42095 .59657 .49180 .24942 .14584 9404 .60301 .34480 .57180 .45171 .22765 .13684

4393 .69156 .40181 .58101 .45123 .23799 .15981 9450 .82655 .45656 .55237 .43643 .20519 .13134

4506 .73497 .41614 .56620 .42409 .20084 .12558 9503 .68160 .39725 .58282 .46140 .24550 .16532

4692 .62518 .35692 .57091 .41746 .20869 .14595 9629 .69453 .40596 .58451 .45137 .22306 .13700

4812 .70221 .40058 .57047 .43930 .22282 .14305 9719 .84458 .45896 .54342 .40376 .20565 .12480

4865 .79769 .46423 .58196 .44342 .22307 .14054 9724 .82088 .46095 .56153 .45531 .22832 .15965

4969 .59618 .35458 .59476 .46723 .23326 .13524 9748 .81471 .45774 .56184 .44268 .20500 .13888

4975 .85543 .47223 .55203 .42660 .22204 .14402 9762 .52370 .29785 .56874 .43221 .21939 .13581

4978 .73312 .42207 .57571 .45995 .23871 .16180
Appendix 3 147

Appendix 3–2.6. L-moments of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0017 2.2520 1.3622 0.60488 0.32654 -0.04123 -0.13760 5063 0.80444 0.31472 0.39123 0.08486 -0.14929 -0.02370

0026 .93774 .51961 .55411 .43864 .25898 .17946 5068 .72620 .41313 .56889 .38291 .14031 .07589

0179 .82131 .47028 .57259 .47023 .23363 .15088 5108 1.0266 .59445 .57906 .44864 .23942 .15289

0188 .70307 .40990 .58302 .46645 .24308 .13887 5329 2.1670 1.0092 .46572 .30139 .10355 -.12105

0215 .77341 .44166 .57106 .44626 .24209 .15916 5463 .69822 .40106 .57440 .46702 .21777 .12350

0242 .72193 .42540 .58925 .46337 .24761 .15437 5581 2.4008 1.0699 .44565 .12339 -.07536 -.06915

0256 1.0908 .61257 .56160 .42660 .20863 .13049 5582 .84756 .52090 .61459 .47669 .24369 .14760

0260 1.4019 .82929 .59156 .35067 .00522 -.16696 5589 .90790 .50441 .55558 .43712 .21602 .14738

0292 1.0584 .58691 .55452 .43974 .23348 .15894 5648 .74550 .43252 .58018 .48584 .26277 .16703

0293 .91236 .52271 .57292 .45887 .23791 .15767 5662 .90852 .53267 .58631 .43543 .22145 .13586

0296 .86727 .54199 .62493 .48338 .25736 .16823 5664 .98358 .55255 .56177 .44433 .22751 .14551

0535 .97875 .56175 .57394 .43286 .17641 .09944 6130 .93010 .52716 .56678 .42140 .21581 .14067

0537 .94341 .52324 .55462 .41058 .16520 .09399 6328 .92298 .53208 .57648 .45287 .25233 .16357

0670 1.1097 .62420 .56250 .42879 .21866 .13870 6391 .95591 .63405 .66329 .59205 .42529 .29577

0814 .74182 .47063 .63443 .49799 .24901 .11913 6485 .90633 .50893 .56153 .42215 .20812 .13162

0908 .57406 .34322 .59789 .51702 .29301 .17752 6612 1.2100 .75444 .62351 .37113 -.04040 -.07511

0912 .45742 .27764 .60697 .48341 .26220 .16105 6616 .87477 .49035 .56055 .44350 .22565 .14517

1148 2.6325 1.2223 .46433 .07024 -.15910 .02764 6620 .88518 .51044 .57666 .46259 .22630 .15224

1168 1.0915 .61157 .56028 .42547 .22993 .15222 6627 .95793 .53992 .56363 .43414 .22707 .15271

1391 1.6165 .94007 .58156 .35743 .06720 -.02475 6638 .95210 .54202 .56929 .42403 .20605 .13106

1436 .99503 .59172 .59468 .45896 .23390 .13526 6643 1.0758 .71046 .66042 .55213 .33027 .22951

1437 1.1419 .61756 .54080 .41505 .22200 .15247 6656 .71353 .44417 .62249 .45995 .23966 .17715

1544 1.1255 .62529 .55558 .41798 .21094 .13522 6661 .79583 .48848 .61380 .45187 .23286 .16138

1684 .89717 .50764 .56582 .44143 .22526 .14613 6729 .88213 .49120 .55683 .42265 .21993 .14154

1688 .92636 .52831 .57031 .43706 .24007 .14322 6740 .53167 .30423 .57221 .47948 .25176 .14822

1750 .88272 .48691 .55160 .42412 .21740 .14927 6760 .84799 .47526 .56045 .42448 .21008 .13032

1855 1.7408 1.1133 .63956 .57567 .43623 .32691 6859 .92250 .52293 .56686 .43298 .21585 .13876

1891 -- -- -- -- -- -- 6926 1.8878 1.1942 .63258 .42492 .14947 -.03170

1900 .84813 .49156 .57958 .42789 .21530 .14419 6935 .90611 .51721 .57081 .44260 .22279 .14389

1902 1.0534 .58121 .55173 .42518 .20827 .13414 6940 -- -- -- -- -- --

1909 1.2100 .72686 .60071 .41116 .13290 -.01326 6944 .88127 .49808 .56518 .43013 .20426 .12914

1954 1.8043 .93286 .51702 .22688 -.01383 -.00101 7080 1.0272 .58658 .57106 .42364 .21890 .14624

2145 .87159 .43334 .49718 .35255 .19821 .11173 7196 .85623 .48447 .56582 .44203 .23508 .15943

2242 1.9871 .85835 .43195 .09954 .03915 -.00662 7201 .74066 .44089 .59527 .45793 .22931 .12850

2309 .98712 .54869 .55585 .36670 .14578 .09507 7309 1.0039 .54614 .54400 .41078 .19788 .13627

2334 .80487 .46670 .57984 .48462 .25285 .17857 7358 .88946 .51239 .57608 .43818 .23058 .15433

2500 2.5222 1.2967 .51410 .20939 -.08887 -.17322 7372 1.4500 .83743 .57754 .49936 .31226 .11855

2654 .96680 .54681 .56559 .45600 .23977 .16314 7412 .57354 .32748 .57098 .47122 .23961 .14081

2665 .84262 .49046 .58206 .44750 .24055 .16099 7556 .95405 .55302 .57966 .44250 .17850 .09405

2678 1.9125 1.4089 .73669 .62510 .37161 .17085 7588 .78241 .46039 .58843 .45703 .23242 .13340

2849 .78759 .46346 .58845 .48592 .27062 .18118 7660 .63292 .35338 .55833 .46889 .24363 .15195

2852 .75479 .43205 .57241 .45795 .19923 .12087 7675 .95292 .52783 .55390 .43027 .21195 .14368

2994 .96968 .57091 .58876 .44658 .23618 .14881 7705 .95373 .52916 .55483 .42619 .22055 .15401

2997 1.0555 .61150 .57935 .40006 .17624 .11285 7714 .73738 .43486 .58974 .45844 .23258 .13276

3002 .52382 .29162 .55672 .44630 .22174 .12627 7732 .93028 .52136 .56043 .41983 .22853 .16211

3281 .83222 .48778 .58612 .45861 .23879 .15568 7739 1.0579 .57966 .54793 .41897 .21361 .15334

3286 .97514 .54739 .56135 .42246 .21753 .14543 8029 .73858 .42371 .57368 .44558 .22095 .12867

3304 .65986 .37974 .57548 .44299 .22270 .14376 8092 -- -- -- -- -- --

3353 1.9550 .89955 .46013 .17837 .11426 .05791 8101 .69705 .39966 .57336 .44947 .20505 .11592

3407 .66264 .41940 .63292 .48236 .25668 .17398 8290 .93417 .53221 .56972 .44153 .22566 .14877

3497 .81435 .47098 .57835 .47166 .26182 .17286 8420 .92190 .49333 .53512 .38846 .20492 .14106

3628 .54103 .31033 .57359 .45395 .22761 .13863 8470 1.2166 .62217 .51141 .37056 .19596 .11169

3700 .91339 .53077 .58110 .46915 .27420 .18754 8497 1.0446 .57725 .55260 .41223 .20327 .12696

3740 .76703 .44464 .57968 .44850 .22278 .12704 8501 .87782 .51081 .58191 .45252 .23470 .15320

3830 .78184 .45387 .58051 .46626 .28379 .21220 8504 .78032 .43157 .55307 .47526 .28297 .21895

3835 .83752 .47222 .56383 .36970 .15252 .10306 8708 .80502 .46326 .57547 .48289 .25115 .16459

4001 -- -- -- -- -- -- 8769 .94553 .53994 .57105 .42358 .21143 .13347

4008 .76233 .42941 .56329 .35723 .10367 .07743 8879 .67940 .40826 .60091 .46931 .24070 .14943

4010 .93861 .54303 .57855 .43425 .21384 .12945 8884 -- -- -- -- -- --

4051 .87738 .50931 .58048 .44299 .21485 .13202 8992 .83993 .51333 .61115 .44104 .21684 .14574

4052 1.0416 .58924 .56571 .44172 .22033 .14740 9014 .85795 .44618 .52005 .36441 .13629 .05570

4098 .88362 .50076 .56672 .43701 .23022 .14333 9023 1.0690 .60701 .56782 .42225 .21681 .13928

4202 .81855 .47486 .58012 .47349 .24355 .15450 9247 1.8550 1.0733 .57862 .42730 .21429 .01442

4204 .63160 .36675 .58067 .49549 .31677 .20829 9278 1.8109 .88145 .48675 .27764 .06284 -.10864

4384 1.0829 .61528 .56817 .42727 .21998 .14759 9300 2.2093 1.2710 .57527 .37566 .16448 .09455

4386 1.0135 .56509 .55757 .40832 .20823 .13958 9364 1.2788 .73442 .57432 .37678 .04869 .01869

4388 .86438 .49038 .56732 .44212 .20090 .10999 9404 .73207 .41733 .57007 .43935 .21618 .12656

4393 .84491 .48943 .57927 .44253 .23302 .15620 9450 1.0284 .56809 .55239 .42573 .20457 .13015

4506 .91450 .50543 .55269 .39880 .19057 .12143 9503 .83705 .49433 .59057 .48041 .27407 .18394

4692 .77359 .44394 .57386 .41568 .20730 .14076 9629 .85081 .49587 .58282 .44243 .21561 .13040

4812 .86512 .48645 .56229 .41997 .21158 .13957 9719 .99804 .53982 .54088 .39514 .19981 .11997

4865 .97048 .55789 .57487 .42562 .20872 .13092 9724 1.0530 .58176 .55248 .43537 .22467 .15155

4969 .70872 .43307 .61106 .49105 .26004 .15486 9748 1.0473 .57070 .54490 .41510 .20407 .13252

4975 1.0400 .58103 .55870 .42235 .21074 .12705 9762 .62637 .35943 .57384 .43053 .21269 .12737

4978 .89309 .51365 .57515 .45273 .23978 .16103
148 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–2.7. L-moments of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0017 3.0709 1.5684 0.51072 0.11717 -0.22623 -0.10115 5063 1.0343 0.29190 0.28223 -0.02643 0.19086 -0.21370

0026 1.1099 .62329 .56159 .44204 .25474 .17062 5068 .88897 .50469 .56773 .35963 .10386 .04613

0179 .96451 .54740 .56754 .45315 .22874 .14894 5108 1.2148 .70055 .57666 .44202 .23341 .14580

0188 .80311 .46593 .58016 .44390 .21190 .11262 5329 2.7088 1.4487 .53484 .56785 .40121 .13817

0215 .92141 .52976 .57494 .44108 .23169 .14774 5463 .82508 .47310 .57340 .44774 .20092 .11158

0242 .82979 .48610 .58581 .44861 .23242 .14323 5581 3.6012 1.7659 .49036 .32329 .45535 .45778

0256 1.3115 .72551 .55317 .40465 .19586 .12383 5582 .99192 .61174 .61672 .47186 .22869 .13162

0260 2.0391 1.2862 .63076 .40430 .16584 .17093 5589 1.0934 .60503 .55332 .42021 .20635 .14225

0292 1.2645 .69385 .54873 .42291 .22860 .16600 5648 .88455 .51373 .58078 .46610 .23896 .14803

0293 1.0750 .61529 .57238 .45518 .23987 .15589 5662 1.0822 .63253 .58449 .44161 .23146 .14427

0296 1.0397 .64229 .61774 .47696 .26286 .17783 5664 1.1895 .65975 .55464 .42488 .21623 .13669

0535 1.2211 .69987 .57317 .42566 .19198 .12798 6130 1.1289 .62943 .55754 .40678 .20745 .13303

0537 1.1444 .63422 .55421 .40848 .18642 .11689 6328 1.0565 .60233 .57010 .43716 .23255 .14153

0670 1.3503 .74429 .55121 .40593 .19954 .12232 6391 1.6177 1.1677 .72183 .64535 .45437 .31831

0814 .85254 .55693 .65327 .49712 .21902 .07901 6485 1.0932 .61300 .56075 .41850 .21147 .13967

0908 .66597 .39857 .59848 .50006 .27037 .16125 6612 1.5125 1.0839 .71665 .62768 .36409 .25865

0912 .52618 .31870 .60568 .47018 .24258 .14361 6616 1.0512 .59122 .56244 .43739 .22403 .14937

1148 3.9487 1.2505 .31669 -.20834 -.01328 .14551 6620 1.0805 .61957 .57343 .43958 .21054 .14296

1168 1.3322 .72977 .54778 .40737 .21841 .13959 6627 1.1908 .68222 .57292 .43549 .22462 .14698

1391 2.4982 1.3700 .54840 .29732 .05176 .00973 6638 1.1455 .64629 .56421 .41254 .19964 .12143

1436 1.1869 .69379 .58452 .44188 .21456 .11477 6643 1.3101 .83969 .64094 .51598 .28968 .20259

1437 1.3891 .74609 .53711 .40490 .20898 .12678 6656 .87245 .53799 .61664 .45115 .23835 .18201

1544 1.3808 .75789 .54890 .41319 .21429 .13006 6661 .98382 .59566 .60546 .44278 .22803 .15620

1684 1.0884 .61466 .56474 .43599 .22558 .14505 6729 1.0834 .60248 .55610 .41140 .20663 .13548

1688 1.0883 .62087 .57052 .43599 .23906 .13716 6740 .64058 .36829 .57493 .46511 .23754 .13601

1750 1.0401 .57131 .54929 .41128 .21071 .14494 6760 .96945 .54033 .55736 .41233 .20109 .12719

1855 2.2630 1.3423 .59317 .46809 .35773 .33830 6859 1.1084 .62542 .56423 .41724 .20173 .12782

1891 -- -- -- -- -- -- 6926 3.3980 1.8510 .54473 .12156 -.32091 -.94111

1900 1.0128 .57832 .57104 .41841 .21625 .14787 6935 1.0990 .62202 .56597 .43192 .22055 .14470

1902 1.3067 .73713 .56413 .42964 .20869 .13072 6940 -- -- -- -- -- --

1909 1.5782 .81182 .51440 .30840 .05244 -.08417 6944 1.0697 .60551 .56605 .42785 .21004 .13569

1954 2.2630 1.3314 .58835 .49983 .35048 .35630 7080 1.2704 .70844 .55763 .40346 .20278 .12885

2145 .96478 .50126 .51956 .36928 .20252 .12193 7196 1.0170 .57435 .56474 .43057 .22193 .14535

2242 3.4775 1.4682 .42220 .20336 .17563 .03138 7201 .94125 .57599 .61194 .49893 .29846 .19996

2309 1.1430 .66702 .58358 .42806 .21914 .15075 7309 1.2392 .67819 .54730 .40738 .19576 .12552

2334 .98953 .57488 .58096 .47790 .25864 .17926 7358 1.1070 .63947 .57768 .44021 .23243 .15000

2500 3.2429 1.4386 .44361 .02761 -.03774 .02714 7372 1.9773 1.1018 .55724 .41705 .22786 .12252

2654 1.1725 .65517 .55878 .44184 .23193 .14664 7412 .67137 .38632 .57541 .45988 .22835 .13533

2665 .96825 .56337 .58184 .43929 .23124 .15422 7556 1.1167 .65722 .58855 .44618 .18207 .08865

2678 2.1857 1.5376 .70349 .60074 .34748 .08176 7588 .88956 .52960 .59535 .45707 .23224 .13938

2849 .93839 .55442 .59082 .48021 .26809 .17702 7660 .74326 .41569 .55928 .45614 .23635 .14752

2852 .86000 .49578 .57649 .45379 .20340 .12607 7675 1.1457 .62125 .54224 .40742 .20453 .13978

2994 1.1787 .67903 .57609 .43553 .23259 .13995 7705 1.1284 .62159 .55088 .41458 .21410 .14272

2997 1.1908 .69212 .58121 .41250 .19430 .12703 7714 .82481 .48166 .58397 .44581 .22256 .12380

3002 .59779 .33940 .56776 .44920 .22151 .12575 7732 1.1056 .60917 .55101 .40876 .22215 .15326

3281 .97836 .57010 .58270 .45145 .23728 .15773 7739 1.2987 .71574 .55111 .41802 .21473 .14452

3286 1.1863 .66257 .55850 .41855 .21880 .14426 8029 .83379 .47411 .56863 .43534 .21834 .12890

3304 .77286 .44749 .57901 .43768 .21364 .13277 8092 -- -- -- -- -- --

3353 2.9038 1.6398 .56473 .49690 .63432 .59752 8101 .81660 .46401 .56822 .43136 .19476 .11108

3407 .82418 .53301 .64671 .50658 .28845 .20551 8290 1.1212 .62727 .55947 .42787 .22549 .14973

3497 .96353 .55881 .57996 .46383 .25315 .16786 8420 1.1103 .58750 .52915 .37791 .20378 .14049

3628 .63802 .36899 .57833 .44464 .21095 .12215 8470 1.4193 .69207 .48760 .35955 .19516 .09854

3700 1.1155 .65012 .58282 .46296 .26418 .17442 8497 1.2733 .69534 .54609 .40210 .19793 .11584

3740 .92516 .53891 .58251 .43962 .21319 .12131 8501 1.0564 .61070 .57810 .44017 .22537 .14466

3830 .94056 .54572 .58020 .45802 .27475 .19622 8504 .92264 .52356 .56745 .48963 .29209 .20504

3835 1.1134 .61991 .55677 .36056 .14366 .09275 8708 .96504 .55372 .57379 .46217 .23572 .15297

4001 -- -- -- -- -- -- 8769 1.1360 .64332 .56632 .41801 .21267 .13453

4008 .84704 .45467 .53678 .28589 .07200 .11954 8879 .78483 .46645 .59434 .44260 .20560 .12356

4010 1.1176 .64734 .57922 .43902 .22826 .14041 8884 -- -- -- -- -- --

4051 1.0243 .59191 .57786 .42654 .20190 .12902 8992 1.0620 .64144 .60397 .43606 .22181 .15410

4052 1.2489 .70532 .56474 .43592 .22370 .14600 9014 1.0486 .48834 .46570 .28718 .10351 .05887

4098 1.0618 .59762 .56284 .43237 .23326 .14976 9023 1.3011 .72771 .55930 .40852 .21089 .13485

4202 .97046 .56274 .57987 .45809 .23108 .14698 9247 2.4733 1.4389 .58176 .43205 .23414 .01274

4204 .77348 .44893 .58041 .48121 .28585 .17797 9278 2.4900 1.6646 .66853 .68612 .70779 .69363

4384 1.3040 .72924 .55923 .40947 .20446 .12899 9300 3.3140 2.2938 .69215 .47992 .11373 -.08484

4386 1.2450 .68589 .55093 .39342 .19848 .12643 9364 1.8600 .90382 .48592 .12077 -.04892 .16412

4388 1.1153 .72126 .64668 .54560 .29004 .15523 9404 .87082 .49749 .57128 .43047 .20619 .11974

4393 1.0251 .58987 .57543 .43772 .23617 .15880 9450 1.2565 .69206 .55079 .41799 .20448 .13168

4506 1.1290 .60685 .53751 .37415 .17454 .10970 9503 1.0080 .60649 .60168 .48852 .28866 .20430

4692 .93223 .52103 .55891 .39168 .19397 .13344 9629 1.0117 .58747 .58066 .43155 .21055 .13172

4812 1.0583 .59415 .56143 .41293 .21137 .14644 9719 1.1735 .62074 .52898 .39076 .21033 .12980

4865 1.1486 .66161 .57603 .42776 .21470 .13547 9724 1.3200 .71217 .53954 .42198 .21794 .12946

4969 .89619 .54182 .60457 .48622 .27731 .18547 9748 1.2746 .68294 .53579 .38476 .17784 .10953

4975 1.2640 .69257 .54794 .39657 .19111 .11579 9762 .73647 .42573 .57807 .42785 .20940 .12736

4978 1.0638 .60655 .57019 .43452 .22585 .15079
Appendix 3 149

Appendix 3–3.1. L-moments of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0017 7.0811 3.4099 0.48155 0.30553 0.13847 0.17069 5063 8.3571 3.9176 0.46877 0.19495 -0.09907 -0.16027

0026 6.1199 2.9457 .48134 .37205 .16549 .10009 5068 5.2857 2.5767 .48748 .36761 .13271 .09098

0179 3.6519 1.9034 .52121 .50927 .20153 .10946 5108 6.2129 3.1818 .51214 .40362 .18244 .12613

0188 5.2007 2.5950 .49897 .43275 .21973 .15365 5329 8.5200 4.7500 .55751 .57492 .39076 .29581

0215 5.8971 2.9391 .49839 .39873 .18793 .13262 5463 3.8310 2.0658 .53925 .52758 .21837 .11775

0242 5.4386 2.7339 .50270 .43342 .22880 .16484 5581 9.0625 4.0887 .45117 .23097 .05572 .02161

0256 4.8134 2.5356 .52677 .44843 .18155 .12699 5582 6.0321 2.8914 .47933 .41442 .23471 .15771

0260 8.3125 4.6935 .56464 .42930 .20186 .17021 5589 3.9494 2.1212 .53710 .51757 .21912 .12707

0292 4.2662 2.3156 .54279 .50071 .19943 .10839 5648 4.1567 2.1827 .52511 .48715 .21029 .13845

0293 4.2190 2.2591 .53545 .50350 .22443 .14345 5662 6.6462 3.2759 .49290 .37770 .17440 .11824

0296 6.0487 2.9548 .48849 .38240 .18629 .13443 5664 4.4558 2.4665 .55354 .51581 .22389 .12771

0535 3.9812 2.1016 .52789 .49009 .18807 .11206 6130 5.7751 2.9620 .51289 .41074 .18153 .12917

0537 3.9375 2.0554 .52201 .49416 .21151 .14102 6328 5.8548 2.9368 .50160 .40869 .20292 .14796

0670 5.0040 2.6822 .53602 .45753 .18713 .12200 6391 3.9024 1.6256 .41656 .39269 .19750 .07842

0814 1.8000 .75840 .42134 .89740 .76012 .60509 6485 5.2719 2.7421 .52013 .42658 .17717 .12327

0908 3.7717 2.0127 .53362 .54086 .25629 .15174 6612 4.2800 2.3233 .54283 .45718 .10619 .05343

0912 4.7116 2.1702 .46061 .36987 .15771 .10476 6616 4.6155 2.3670 .51284 .43325 .16949 .11877

1148 8.0323 3.7333 .46479 .30534 .15141 .08638 6620 4.1586 2.2796 .54817 .52150 .22136 .12389

1168 6.3460 3.2159 .50676 .40181 .18465 .11916 6627 4.8372 2.5409 .52528 .45149 .18652 .11857

1391 7.3947 3.4317 .46408 .34646 .18557 .12384 6638 5.0845 2.6920 .52945 .44418 .18261 .12702

1436 6.7838 3.2436 .47814 .37710 .18544 .11349 6643 6.1346 3.0178 .49194 .40062 .20255 .13202

1437 4.2869 2.2764 .53102 .48660 .20798 .13817 6656 5.6563 2.9385 .51952 .45887 .24443 .16708

1544 5.2742 2.8053 .53189 .44247 .18287 .12564 6661 5.9789 3.0585 .51155 .41933 .19961 .13587

1684 4.5665 2.3934 .52411 .45784 .19127 .13743 6729 5.6473 2.8413 .50312 .41098 .18635 .11869

1688 5.6888 2.7541 .48413 .36921 .16023 .10251 6740 3.9728 1.9988 .50314 .46936 .20896 .14133

1750 4.0610 2.1291 .52429 .49159 .21150 .13751 6760 5.5896 2.7944 .49993 .39931 .17743 .12516

1855 6.4186 2.5426 .39614 .20473 .04822 -.00453 6859 5.1518 2.6505 .51447 .42182 .17527 .12443

1891 -- -- -- -- -- -- 6926 6.1739 2.5494 .41293 .32669 .17231 .16471

1900 6.1668 2.9918 .48515 .37700 .17275 .11218 6935 4.7158 2.4845 .52684 .45199 .17987 .11998

1902 4.3594 2.3109 .53011 .47288 .18724 .12141 6940 -- -- -- -- -- --

1909 8.0000 4.1839 .52299 .54796 .40624 .27750 6944 4.7535 2.5092 .52787 .44871 .17352 .11565

1954 6.5641 3.2267 .49157 .44506 .22152 .12493 7080 5.8419 3.0399 .52036 .42424 .18779 .12237

2145 5.4644 2.6780 .49008 .39364 .19037 .14220 7196 4.9610 2.6386 .53188 .45673 .19328 .12819

2242 8.7742 4.9806 .56765 .56897 .39272 .30408 7201 5.5032 2.7322 .49647 .38153 .15448 .11717

2309 5.4132 2.5862 .47775 .38124 .16651 .09194 7309 4.2704 2.2374 .52394 .46200 .16925 .10300

2334 3.9251 2.0701 .52741 .49787 .19975 .12089 7358 6.3132 3.0741 .48693 .39231 .18557 .10778

2500 8.3636 3.9307 .46998 .36905 .24562 .16894 7372 7.9730 3.4354 .43089 .36541 .25378 .24529

2654 4.0410 2.1890 .54170 .52108 .22468 .12941 7412 3.9182 1.9941 .50894 .48080 .21518 .15081

2665 5.4481 2.6297 .48269 .38077 .16899 .11412 7556 4.0273 2.2177 .55066 .53949 .24506 .15284

2678 6.0909 2.5584 .42004 .28579 .13906 .10056 7588 5.4948 2.8345 .51585 .44351 .21959 .14789

2849 4.3798 2.3021 .52562 .47904 .21168 .14022 7660 4.0909 2.1374 .52249 .49141 .22127 .15160

2852 3.5016 1.8241 .52092 .52277 .20630 .10191 7675 4.1930 2.2078 .52656 .47463 .18015 .10533

2994 5.6017 2.6944 .48100 .39846 .19013 .11040 7705 4.7230 2.4976 .52881 .45967 .19223 .13093

2997 6.3936 3.0277 .47355 .37079 .16133 .08305 7714 5.4898 2.7496 .50086 .42323 .20576 .13776

3002 4.0561 2.0960 .51675 .48354 .21058 .13371 7732 6.1743 3.0703 .49728 .39102 .17970 .12076

3281 4.8869 2.5285 .51741 .44968 .20796 .14702 7739 4.4373 2.3015 .51866 .45080 .17611 .11705

3286 5.2516 2.6740 .50918 .42070 .18752 .13275 8029 4.8575 2.4908 .51278 .43060 .17923 .12675

3304 4.8582 2.5232 .51937 .45919 .21806 .15046 8092 -- -- -- -- -- --

3353 10.148 5.2194 .51432 .46725 .27293 .14732 8101 4.0427 2.1536 .53270 .51624 .24248 .16156

3407 5.0043 2.8457 .56865 .50586 .22037 .15809 8290 5.1146 2.6199 .51225 .41793 .17451 .13281

3497 4.5454 2.4056 .52923 .47759 .21396 .14426 8420 5.9857 2.9221 .48817 .38692 .18359 .12049

3628 4.1266 2.1239 .51468 .48234 .22079 .14544 8470 5.4426 2.5672 .47169 .35431 .15715 .11440

3700 5.8118 2.8320 .48729 .39535 .19020 .12355 8497 5.1678 2.6953 .52157 .43398 .18137 .12057

3740 4.9502 2.5271 .51049 .42965 .19183 .14488 8501 4.7675 2.4604 .51606 .44714 .20028 .14376

3830 5.7988 2.7698 .47765 .40287 .20199 .12136 8504 3.2893 1.6125 .49024 .48408 .17408 .09474

3835 5.0264 2.6477 .52676 .40042 .11669 .13002 8708 3.8494 2.0387 .52961 .50725 .20150 .10883

4001 3.1000 1.1000 .35484 .09091 -.10390 .09091 8769 5.6160 2.8253 .50308 .40200 .17582 .11940

4008 8.3800 4.0796 .48682 .34412 .17752 .12152 8879 4.9307 2.2182 .44988 .33447 .14129 .10924

4010 6.7920 3.2586 .47977 .36138 .16203 .10205 8884 8.9000 3.8778 .43571 .44269 .42182 .09599

4051 5.2386 2.6910 .51368 .44051 .21690 .15821 8992 6.1559 3.1898 .51816 .42234 .19700 .12853

4052 4.2298 2.2586 .53397 .48983 .19765 .11739 9014 4.3333 2.0857 .48131 .40239 .15502 .10151

4098 5.6639 2.8425 .50187 .39447 .16750 .11569 9023 6.5399 3.2851 .50233 .39981 .19523 .13048

4202 3.9904 2.1022 .52683 .50378 .22311 .14270 9247 7.9706 3.6640 .45969 .35293 .14957 .04876

4204 4.8723 2.2816 .46828 .39644 .20619 .15427 9278 7.5000 2.7884 .37178 .18764 .10702 .03483

4384 5.6894 2.9540 .51921 .42495 .19558 .14332 9300 7.7073 4.1488 .53829 .48076 .24707 .13303

4386 5.9946 3.0223 .50417 .39866 .18255 .12833 9364 6.4242 2.9205 .45460 .38927 .17016 -.00186

4388 5.2374 2.4916 .47573 .38162 .16261 .09426 9404 5.0617 2.6394 .52145 .44879 .20629 .14467

4393 5.2515 2.6824 .51079 .42303 .18408 .12317 9450 4.3333 2.2622 .52205 .45576 .16689 .10351

4506 5.6988 2.9409 .51606 .41787 .18476 .12753 9503 6.7258 3.1575 .46946 .35636 .17033 .10958

4692 6.1299 2.9852 .48698 .38472 .18074 .11983 9629 5.2387 2.7292 .52097 .44854 .21578 .15235

4812 5.4463 2.7287 .50102 .41090 .18593 .11872 9719 5.9646 3.0601 .51305 .40505 .17235 .11613

4865 5.8581 3.0006 .51221 .41720 .19817 .14183 9724 4.5283 2.4639 .54411 .49118 .20413 .12753

4969 5.1014 2.8678 .56216 .49686 .21244 .12801 9748 4.2110 2.2907 .54398 .49938 .18504 .08843

4975 5.0875 2.6221 .51539 .42847 .18011 .12252 9762 5.3130 2.5461 .47921 .41298 .21147 .13600

4978 4.5028 2.3686 .52603 .47110 .20906 .14957
150 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–3.2. L-moments of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0017 8.2941 4.1123 0.49581 0.35996 0.21461 0.17873 5063 8.3571 3.9176 0.46877 0.19495 -0.09907 -0.16027

0026 6.7981 3.4255 .50389 .39853 .19027 .12341 5068 5.8504 2.8173 .48155 .33232 .10689 .08517

0179 4.3358 2.3806 .54906 .50676 .20405 .11230 5108 6.9899 3.6508 .52229 .40228 .17707 .11658

0188 5.8110 3.0239 .52038 .45122 .23143 .15504 5329 9.1250 5.1685 .56641 .58168 .39849 .28566

0215 6.5206 3.3143 .50828 .39877 .18372 .12505 5463 4.4488 2.4834 .55822 .51463 .20907 .11476

0242 5.9046 3.0349 .51398 .43775 .23000 .16352 5581 9.5484 4.2473 .44482 .22790 .04609 -.01092

0256 5.5532 3.0305 .54573 .45279 .18654 .12504 5582 6.7292 3.3907 .50387 .44742 .26363 .17446

0260 9.3000 5.1161 .55012 .38361 .16332 .14294 5589 4.7359 2.6383 .55709 .49830 .20179 .11660

0292 5.0980 2.8253 .55419 .47206 .17684 .10055 5648 4.7440 2.5803 .54390 .48642 .21220 .13972

0293 4.8015 2.6262 .54697 .48250 .19656 .11626 5662 7.5689 3.8567 .50954 .39124 .18296 .11632

0296 7.0029 3.6069 .51505 .41210 .20405 .12889 5664 5.2252 2.9443 .56348 .48824 .19581 .11033

0535 4.8122 2.6848 .55790 .49497 .20020 .12093 6130 6.5221 3.4044 .52198 .41024 .18576 .13351

0537 4.6261 2.5141 .54346 .48506 .19866 .11846 6328 6.4043 3.3022 .51562 .42330 .21699 .15615

0670 5.7253 3.1528 .55067 .45540 .18592 .11864 6391 4.4359 1.9271 .43444 .38387 .16957 .04592

0814 1.9407 .88519 .45613 .88328 .72834 .55562 6485 6.0391 3.2236 .53379 .42200 .16901 .11260

0908 4.1309 2.2610 .54734 .53313 .24306 .13306 6612 5.2174 2.9209 .55985 .42200 .05026 -.02462

0912 5.1876 2.5432 .49025 .41254 .19841 .13514 6616 5.3172 2.8062 .52775 .42851 .16565 .11135

1148 8.0323 3.7333 .46479 .30534 .15141 .08638 6620 4.8846 2.7632 .56570 .50567 .20689 .11710

1168 7.0963 3.7047 .52206 .40881 .18583 .11819 6627 5.5751 3.0233 .54229 .45402 .19273 .12367

1391 8.5429 4.0454 .47354 .31609 .14744 .11213 6638 5.8488 3.1866 .54482 .44308 .18139 .12132

1436 7.3561 3.6195 .49203 .39190 .19732 .12206 6643 6.4384 3.2757 .50878 .42501 .22103 .14305

1437 5.0884 2.7938 .54905 .47200 .19175 .12147 6656 6.5233 3.4474 .52848 .43534 .20419 .12708

1544 6.1422 3.3471 .54494 .43705 .18009 .12233 6661 6.8729 3.5993 .52369 .41680 .19370 .12868

1684 5.2418 2.8429 .54235 .46173 .19961 .14162 6729 6.2995 3.2469 .51542 .41177 .18182 .11176

1688 6.6264 3.3457 .50491 .36392 .13074 .06969 6740 4.3651 2.2794 .52219 .47735 .21198 .13304

1750 4.6911 2.5384 .54111 .48185 .20556 .13534 6760 6.2230 3.2298 .51902 .41606 .19133 .13363

1855 7.7179 2.8327 .36702 .15746 .02219 .00558 6859 5.8869 3.1313 .53191 .43188 .18853 .13121

1891 -- -- -- -- -- -- 6926 7.3333 3.2238 .43961 .31633 .14289 .11757

1900 6.8021 3.4016 .50009 .38982 .18088 .11585 6935 5.5244 3.0174 .54620 .45710 .19308 .13060

1902 5.0538 2.7968 .55341 .48000 .19681 .12425 6940 -- -- -- -- -- --

1909 9.0357 5.0622 .56024 .56170 .39353 .27140 6944 5.5455 3.0127 .54327 .44381 .17394 .11748

1954 7.6111 3.6048 .47362 .40459 .22422 .16877 7080 6.4998 3.4676 .53350 .42797 .18827 .11985

2145 6.0748 3.0695 .50528 .40093 .19176 .13688 7196 5.6332 3.0646 .54403 .45546 .19765 .13037

2242 9.8276 5.4433 .55388 .53937 .35426 .27220 7201 6.1137 3.0941 .50610 .38053 .15500 .11847

2309 6.2478 3.0878 .49422 .36894 .12930 .05145 7309 5.0808 2.7645 .54410 .45587 .16821 .10143

2334 4.6611 2.5512 .54732 .48274 .18743 .11191 7358 6.9486 3.4522 .49681 .39237 .17968 .10294

2500 9.0952 4.1238 .45340 .31773 .22207 .14945 7372 10.281 4.6764 .45485 .38556 .32191 .29957

2654 4.6375 2.5948 .55952 .51313 .21984 .12889 7412 4.4729 2.3841 .53302 .48956 .22483 .15148

2665 6.0876 3.1008 .50936 .41462 .19801 .13240 7556 4.8723 2.8452 .58395 .54903 .26265 .16654

2678 6.6667 2.5381 .38071 .23630 .14305 .10864 7588 6.0278 3.2648 .54162 .47449 .24733 .16857

2849 5.0521 2.7603 .54636 .48144 .21594 .14445 7660 4.6406 2.5146 .54188 .49439 .22846 .15709

2852 4.4875 2.5241 .56248 .51925 .20878 .10322 7675 4.9285 2.6808 .54394 .46291 .17275 .10263

2994 6.2302 3.1425 .50439 .42948 .21924 .13299 7705 5.3468 2.9183 .54581 .46363 .19756 .13139

2997 6.8822 3.2701 .47516 .35606 .14593 .07754 7714 6.1148 3.1887 .52147 .43580 .21123 .14161

3002 4.4907 2.4065 .53588 .49091 .21771 .13503 7732 6.7210 3.4501 .51333 .40446 .18467 .11844

3281 5.6151 3.0104 .53612 .45343 .20881 .14178 7739 5.1344 2.7676 .53903 .45433 .18147 .11710

3286 5.9534 3.1670 .53196 .43798 .19777 .13142 8029 5.4045 2.8877 .53431 .45688 .21423 .15617

3304 5.4095 2.8994 .53598 .46562 .22261 .15134 8092 -- -- -- -- -- --

3353 14.000 8.6364 .61688 .58346 .36098 .18980 8101 4.6431 2.5600 .55136 .50819 .23198 .14871

3407 5.9929 3.4132 .56954 .46534 .18802 .14164 8290 5.7422 3.0164 .52529 .41929 .17635 .13034

3497 5.3846 2.9832 .55402 .48525 .22524 .15200 8420 6.5081 3.2730 .50291 .39583 .18431 .11934

3628 4.6484 2.4793 .53337 .48198 .21625 .13610 8470 6.7273 3.5158 .52262 .42363 .19662 .10641

3700 6.4762 3.2796 .50641 .41043 .20003 .13168 8497 5.9629 3.2041 .53733 .43308 .17929 .11756

3740 5.5751 2.9238 .52444 .43375 .19833 .14509 8501 5.4452 2.8771 .52837 .44215 .19820 .14046

3830 6.5932 3.3459 .50748 .44278 .23866 .15299 8504 3.8079 1.9584 .51428 .47821 .17515 .09615

3835 5.3973 2.7804 .51516 .36205 .09748 .13095 8708 4.5205 2.4992 .55285 .50244 .20270 .11408

4001 4.1111 2.1389 .52027 .48052 .28571 .38961 8769 6.4282 3.3709 .52439 .41938 .18966 .12469

4008 10.022 4.5707 .45606 .29314 .14549 .08387 8879 5.4637 2.4731 .45264 .31910 .12881 .09691

4010 7.4776 3.7243 .49806 .37939 .17170 .10553 8884 8.9000 3.8778 .43571 .44269 .42182 .09599

4051 5.8908 3.1003 .52630 .44074 .21011 .13864 8992 7.0464 3.6999 .52508 .40938 .18136 .11681

4052 5.0187 2.7930 .55651 .48810 .20339 .12664 9014 4.6567 2.3053 .49505 .40106 .13300 .06439

4098 6.3817 3.2605 .51092 .39087 .16364 .11038 9023 7.2907 3.7509 .51448 .40543 .19562 .12581

4202 4.6520 2.5352 .54497 .49120 .21201 .13536 9247 9.3548 4.6323 .49517 .40937 .18747 .07823

4204 5.8182 3.0161 .51840 .45811 .25692 .18753 9278 9.2400 3.7100 .40152 .27177 .19356 .08877

4384 6.4678 3.4311 .53049 .42333 .19205 .13405 9300 9.2432 5.1922 .56173 .48097 .24367 .12900

4386 6.7336 3.4817 .51706 .40090 .17931 .12037 9364 7.2581 3.6129 .49778 .46429 .26218 .10239

4388 6.0385 3.0249 .50093 .38525 .14946 .09151 9404 5.7300 3.1000 .54100 .45517 .20514 .13529

4393 5.8840 3.0667 .52120 .41960 .18170 .12224 9450 5.0289 2.7018 .53726 .44497 .15892 .09753

4506 6.3618 3.3209 .52201 .41080 .18183 .12780 9503 7.5248 3.6183 .48085 .36586 .17426 .10457

4692 6.7181 3.3629 .50057 .39962 .19371 .12771 9629 5.9366 3.1849 .53649 .45070 .21271 .14196

4812 6.0867 3.1193 .51247 .40855 .17908 .11150 9719 6.5967 3.4428 .52190 .40079 .16570 .11132

4865 6.6337 3.4822 .52493 .41717 .19182 .12891 9724 5.3908 3.0319 .56241 .47988 .19302 .11624

4969 5.6021 3.2431 .57891 .50409 .21453 .11866 9748 5.0705 2.8115 .55449 .46259 .15207 .07626

4975 5.8508 3.0953 .52904 .42808 .18313 .12421 9762 5.8109 2.9078 .50041 .43561 .22783 .14567

4978 5.2117 2.8378 .54450 .47079 .21101 .14780
Appendix 3 151

Appendix 3–3.3. L-moments of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0017 13.370 8.2991 0.62071 0.52294 0.32853 0.26445 5063 11.167 4.9545 0.44369 0.12355 -0.05505 0.08002

0026 8.0109 4.1895 .52297 .41148 .19669 .12259 5068 7.6053 3.8948 .51212 .38004 .18638 .16502

0179 5.7422 3.3235 .57879 .48852 .18723 .09825 5108 8.3253 4.5842 .55064 .42831 .19310 .12042

0188 7.2839 4.0671 .55837 .48259 .25967 .17555 5329 10.864 5.9199 .54493 .48680 .30003 .22626

0215 7.4642 3.9468 .52877 .41256 .18852 .12219 5463 5.9267 3.5059 .59155 .50217 .19536 .09921

0242 7.1646 3.9429 .55032 .46971 .25155 .17143 5581 12.222 5.8177 .47599 .29606 .15867 .16263

0256 6.9534 3.9548 .56876 .45603 .19181 .12327 5582 7.6710 4.0055 .52216 .46085 .26568 .16301

0260 12.115 7.6723 .63327 .49439 .24162 .18749 5589 6.0138 3.4724 .57741 .48260 .19426 .11585

0292 6.5086 3.7593 .57758 .46525 .17710 .10723 5648 5.8814 3.3244 .56525 .47707 .20365 .12687

0293 6.0907 3.4438 .56542 .46402 .18420 .11163 5662 8.7785 4.6428 .52888 .40608 .19289 .12357

0296 8.5295 4.6538 .54561 .43727 .21912 .13883 5664 6.6940 3.9542 .59070 .48719 .19742 .11216

0535 6.1549 3.6285 .58953 .49195 .18724 .09218 6130 7.9498 4.3280 .54441 .41916 .18509 .12164

0537 5.7594 3.2877 .57084 .47789 .18112 .08829 6328 7.7131 4.1376 .53643 .42955 .21015 .13829

0670 7.1722 4.1065 .57256 .45621 .18878 .11891 6391 5.5000 2.7937 .50794 .47136 .25538 .14196

0814 2.3333 1.2549 .53783 .88354 .72865 .55530 6485 7.4896 4.1363 .55228 .41912 .16202 .09895

0908 5.0646 2.9853 .58944 .55615 .26986 .15011 6612 6.6190 3.6048 .54460 .33421 -.00871 -.01382

0912 5.7891 2.9516 .50985 .42534 .20277 .13231 6616 6.5409 3.6297 .55492 .44514 .18660 .12295

1148 12.240 6.6367 .54221 .46075 .31979 .24564 6620 6.3312 3.7466 .59176 .49278 .19274 .10172

1168 8.4785 4.5780 .53996 .41032 .17462 .10157 6627 6.8885 3.8959 .56557 .45685 .19442 .12079

1391 11.467 6.8184 .59463 .53278 .37371 .32317 6638 7.2294 4.0776 .56403 .44169 .18015 .11584

1436 8.7696 4.5715 .52129 .42091 .21213 .12225 6643 8.7288 4.6730 .53535 .40383 .16136 .07967

1437 6.7098 3.8361 .57171 .46096 .18793 .11904 6656 8.1418 4.5253 .55582 .45158 .21335 .12812

1544 7.7221 4.3859 .56797 .44125 .18107 .11514 6661 8.6319 4.7165 .54640 .42239 .18850 .11629

1684 6.6533 3.7632 .56562 .45463 .18789 .12256 6729 7.4893 3.9954 .53348 .41227 .17196 .09731

1688 8.1807 4.4369 .54236 .41216 .17575 .10042 6740 5.1215 2.8108 .54883 .48832 .22377 .13803

1750 6.0114 3.4504 .57398 .48695 .21152 .13356 6760 7.2890 4.0346 .55353 .45820 .23071 .15996

1855 14.643 5.9074 .40343 .21134 .11035 .04645 6859 7.1643 3.9570 .55232 .43571 .18753 .12075

1891 -- -- -- -- -- -- 6926 9.1053 3.8772 .42582 .20256 .05510 .05164

1900 7.9685 4.2094 .52826 .41862 .19988 .12424 6935 7.0086 3.9404 .56222 .44115 .17714 .11286

1902 6.6352 3.7602 .56670 .44477 .16247 .09623 6940 -- -- -- -- -- --

1909 12.125 8.2446 .67996 .70348 .54367 .39582 6944 7.0415 3.9903 .56669 .44289 .17277 .11051

1954 12.138 5.7340 .47240 .34002 .19068 .16906 7080 7.7371 4.2670 .55150 .43368 .19048 .11790

2145 7.1646 3.8695 .54009 .42617 .19747 .13442 7196 6.7419 3.8077 .56478 .46069 .20162 .12828

2242 11.222 6.4929 .57857 .57557 .41325 .32644 7201 6.9929 3.6932 .52814 .40083 .16512 .10889

2309 7.5167 3.8032 .50597 .37243 .13633 .06156 7309 6.5954 3.7432 .56755 .44562 .16157 .09644

2334 5.6878 3.3061 .58126 .50446 .21843 .13509 7358 8.2644 4.2998 .52028 .41389 .19905 .12258

2500 10.895 4.0760 .37413 .25597 .22958 .12142 7372 14.769 7.9600 .53896 .45893 .26781 .17183

2654 5.9728 3.4855 .58356 .49267 .19716 .11028 7412 5.5450 3.1644 .57068 .50928 .24461 .15740

2665 7.0045 3.7432 .53440 .43345 .20579 .12982 7556 5.9936 3.6114 .60254 .53068 .24079 .14374

2678 10.000 4.6797 .46797 .29068 .05709 -.07734 7588 6.9038 3.9464 .57163 .50047 .26255 .17076

2849 6.2097 3.5610 .57346 .48763 .22060 .14034 7660 5.6132 3.2276 .57501 .51209 .24458 .15666

2852 5.5637 3.2593 .58582 .50409 .19116 .08519 7675 6.4361 3.6536 .56767 .44951 .16340 .09747

2994 7.6255 4.1666 .54641 .45609 .21184 .09943 7705 6.7339 3.8361 .56967 .46452 .19929 .12561

2997 7.9839 4.0342 .50530 .39152 .17334 .09386 7714 7.3156 4.0379 .55196 .46347 .23625 .16012

3002 5.4423 3.0792 .56578 .49798 .21958 .12247 7732 7.8058 4.2012 .53821 .41939 .18470 .10871

3281 6.7599 3.7904 .56072 .46254 .21043 .13100 7739 6.4080 3.5765 .55813 .44469 .17446 .10988

3286 7.1280 3.9885 .55955 .45777 .21116 .13152 8029 6.2356 3.5006 .56139 .48173 .23897 .16965

3304 6.4818 3.6219 .55877 .47341 .22807 .14902 8092 -- -- -- -- -- --

3353 16.250 10.539 .64858 .66575 .51458 .36720 8101 5.6457 3.2690 .57903 .51017 .23092 .13956

3407 7.9550 4.5674 .57415 .43527 .17753 .13741 8290 7.1319 3.9514 .55405 .43807 .19144 .12819

3497 6.7558 3.9457 .58404 .49484 .23214 .15043 8420 7.5656 4.0506 .53540 .43067 .20578 .12230

3628 5.7661 3.2745 .56788 .49875 .23390 .14340 8470 7.3396 3.8846 .52927 .39649 .14424 .06147

3700 7.5240 4.0959 .54438 .45115 .22535 .14128 8497 7.4350 4.1590 .55937 .43636 .18143 .11644

3740 6.7642 3.7432 .55338 .45625 .21775 .14727 8501 6.4786 3.5861 .55353 .45184 .19790 .12696

3830 7.3459 3.8288 .52121 .43810 .22031 .12993 8504 5.3137 3.0296 .57016 .49416 .20099 .11839

3835 7.4051 4.3102 .58205 .45440 .19399 .16432 8708 5.8196 3.4123 .58634 .50298 .20669 .11615

4001 5.7500 2.7857 .48447 .29487 .07692 -.06410 8769 7.5688 4.1594 .54954 .43429 .19114 .11478

4008 13.816 7.6750 .55552 .50113 .38365 .31833 8879 6.9688 3.5953 .51592 .42302 .22808 .16453

4010 8.9583 4.7839 .53402 .42535 .20625 .12462 8884 13.625 6.7321 .49410 .69761 .50133 .40053

4051 7.1606 3.9026 .54501 .44355 .20739 .12668 8992 8.6842 4.6800 .53891 .40321 .17069 .10702

4052 6.2661 3.6311 .57948 .47817 .18736 .10316 9014 5.3438 2.7202 .50905 .42115 .17543 .10346

4098 7.7085 4.1074 .53284 .40217 .16913 .10858 9023 8.9545 4.8036 .53644 .41436 .19214 .11527

4202 5.9471 3.4207 .57519 .48922 .20933 .12707 9247 11.679 6.3690 .54536 .49676 .29376 .22287

4204 6.6987 3.7699 .56277 .50923 .29517 .20525 9278 10.826 4.1818 .38627 .18796 .12760 .08264

4384 7.8847 4.3398 .55040 .42814 .18959 .12165 9300 12.156 6.4869 .53363 .36143 .14310 .09948

4386 8.1432 4.3909 .53921 .40978 .17830 .11356 9364 9.0357 5.0225 .55585 .54596 .33657 .17829

4388 8.0870 4.6870 .57957 .47381 .21214 .12041 9404 6.9420 3.9611 .57060 .47423 .22073 .14131

4393 7.2033 3.9456 .54775 .43441 .18928 .11593 9450 6.3771 3.5339 .55415 .43167 .15700 .10000

4506 7.7653 4.2460 .54679 .42430 .18733 .12088 9503 9.3839 4.9634 .52893 .42950 .23374 .16029

4692 7.9557 4.1356 .51982 .40228 .18010 .10782 9629 7.3116 4.1124 .56245 .46276 .22231 .14654

4812 7.4206 3.9841 .53690 .42062 .18181 .10565 9719 7.5409 4.1171 .54597 .42611 .18852 .12499

4865 7.9937 4.3301 .54169 .42005 .18755 .11459 9724 6.7289 3.8457 .57152 .45469 .17664 .11051

4969 6.2271 3.7335 .59956 .51769 .22415 .11920 9748 6.6781 3.8420 .57532 .44354 .14152 .07845

4975 7.3975 4.0562 .54833 .42427 .17593 .10986 9762 6.7135 3.5745 .53243 .47058 .25843 .16808

4978 6.5898 3.7786 .57340 .47767 .21388 .13475
152 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–3.4. L-moments of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0017 18.522 12.024 0.64917 0.52193 0.27069 0.13880 5063 13.455 5.1273 0.38108 -0.06147 0.00118 0.23641

0026 10.391 5.8646 .56438 .44807 .21519 .12709 5068 9.9612 5.7184 .57407 .46312 .24911 .18763

0179 7.9645 4.8238 .60566 .47635 .17530 .08928 5108 10.518 5.9451 .56524 .42563 .18669 .11555

0188 9.2923 5.5815 .60066 .51239 .26828 .16322 5329 15.579 9.5322 .61186 .56947 .30639 .11539

0215 9.3616 5.2186 .55745 .42837 .18939 .11310 5463 7.6711 4.6457 .60561 .47927 .17644 .09321

0242 8.9131 5.1355 .57617 .47817 .24762 .15931 5581 20.667 11.557 .55922 .48726 .34787 .23724

0256 9.3392 5.5033 .58927 .44855 .17855 .10431 5582 9.6940 5.4737 .56465 .47604 .23968 .12021

0260 14.292 10.505 .73507 .68506 .50175 .43028 5589 8.3724 4.9741 .59411 .45471 .16652 .09465

0292 9.3719 5.6766 .60570 .46690 .18916 .12121 5648 7.9492 4.7302 .59506 .48107 .21087 .13186

0293 8.0651 4.7822 .59295 .46824 .18928 .11168 5662 11.447 6.4744 .56559 .43427 .20292 .12650

0296 11.089 6.5137 .58742 .47424 .24012 .15020 5664 8.9288 5.3653 .60090 .45668 .16430 .08590

0535 8.4837 5.1729 .60974 .47405 .17175 .08267 6130 10.269 5.8039 .56516 .41801 .17105 .10200

0537 7.7766 4.7069 .60526 .49633 .21627 .12619 6328 9.6155 5.5691 .57918 .47636 .24656 .15773

0670 9.3475 5.4932 .58767 .44368 .17201 .09970 6391 7.8182 4.4280 .56638 .47369 .23251 .14381

0814 3.3426 2.2163 .66303 .89486 .75765 .60855 6485 9.5543 5.4424 .56962 .41723 .15803 .09528

0908 6.6550 4.1247 .61979 .54345 .24577 .12029 6612 9.7778 6.0719 .62099 .48089 .21582 .16927

0912 7.1687 3.9692 .55368 .46401 .21899 .11923 6616 8.4983 4.8957 .57609 .44655 .18876 .11927

1148 14.609 9.0791 .62148 .55433 .34498 .17942 6620 8.1731 4.9299 .60319 .46851 .17155 .09410

1168 10.744 6.0524 .56335 .41657 .16892 .09470 6627 8.9977 5.2277 .58101 .44262 .17660 .10441

1391 15.500 10.872 .70144 .64879 .44276 .31448 6638 9.1571 5.4123 .59105 .45769 .19331 .12154

1436 10.802 5.9422 .55009 .43645 .20907 .11358 6643 11.392 6.5524 .57516 .45373 .22431 .15406

1437 9.4376 5.5052 .58333 .42498 .14552 .08305 6656 10.530 6.1492 .58399 .47045 .22010 .11515

1544 10.462 6.1381 .58670 .43171 .16477 .09866 6661 11.046 6.1916 .56053 .41144 .16863 .10087

1684 8.6116 4.9921 .57969 .43922 .16831 .09905 6729 9.2348 5.1733 .56019 .42941 .18143 .10215

1688 9.2911 5.2060 .56032 .42688 .18841 .11371 6740 6.6722 3.8522 .57735 .48355 .21071 .11431

1750 7.9823 4.7363 .59334 .47173 .19548 .11837 6760 8.8937 5.0522 .56807 .44599 .20133 .12285

1855 20.957 11.261 .53734 .40591 .18904 .08075 6859 9.2427 5.3595 .57986 .44596 .18715 .10992

1891 -- -- -- -- -- -- 6926 13.562 6.8208 .50292 .33956 .20419 .21626

1900 9.8595 5.4847 .55629 .43449 .20168 .12089 6935 9.0896 5.2827 .58118 .43934 .17547 .10930

1902 8.5611 4.9239 .57514 .42341 .14617 .08321 6940 -- -- -- -- -- --

1909 15.409 10.816 .70192 .69498 .53097 .39759 6944 9.1388 5.3548 .58594 .44244 .17443 .10958

1954 20.318 12.253 .60307 .48956 .23711 .10618 7080 10.272 5.9266 .57698 .44040 .18948 .11294

2145 8.8630 5.1131 .57690 .44920 .19296 .10865 7196 8.5295 5.0040 .58666 .45700 .18542 .10575

2242 12.808 7.7831 .60769 .58915 .40371 .28831 7201 9.4764 5.3909 .56887 .42660 .16807 .09026

2309 9.3333 4.9086 .52592 .36620 .12152 .06386 7309 8.7717 5.0810 .57926 .42665 .15233 .09719

2334 7.6173 4.5845 .60186 .48245 .19027 .10577 7358 10.238 5.5615 .54321 .41596 .18365 .10478

2500 14.059 7.2794 .51778 .51071 .40173 .28500 7372 17.125 10.226 .59716 .53507 .33510 .23150

2654 8.7715 5.2500 .59853 .45237 .15888 .08738 7412 7.2264 4.3751 .60544 .51680 .23995 .13291

2665 8.8788 5.0427 .56794 .45128 .20644 .11966 7556 8.1382 5.0175 .61653 .49238 .18828 .08896

2678 18.846 10.410 .55238 .31706 .08061 .09031 7588 8.9803 5.5169 .61433 .52459 .27175 .16653

2849 8.4506 5.1113 .60485 .49153 .22068 .13497 7660 7.4267 4.5146 .60788 .51108 .22745 .12026

2852 7.4873 4.4831 .59876 .46259 .14688 .06174 7675 8.4864 4.9866 .58760 .44167 .15669 .09021

2994 9.9891 5.7947 .58010 .45982 .18943 .07571 7705 8.7780 5.2321 .59604 .47377 .20701 .12380

2997 9.6875 5.0834 .52473 .39570 .16869 .08719 7714 8.7404 5.0121 .57344 .46557 .22318 .14067

3002 7.0278 4.2417 .60357 .51277 .22698 .11643 7732 9.4279 5.2787 .55990 .42492 .17572 .09507

3281 8.4768 4.9765 .58707 .47298 .21370 .12665 7739 8.7983 5.1201 .58194 .43971 .16803 .09824

3286 9.2767 5.3982 .58191 .45492 .19610 .10999 8029 7.6662 4.5894 .59865 .51890 .27899 .19592

3304 8.3297 4.8377 .58078 .46618 .20667 .11921 8092 -- -- -- -- -- --

3353 20.333 13.948 .68595 .67549 .48946 .29358 8101 7.3132 4.4602 .60989 .51164 .22251 .11724

3407 10.484 6.1572 .58730 .43357 .18423 .13544 8290 9.3361 5.4954 .58861 .46347 .20904 .12883

3497 8.5987 5.2015 .60492 .49214 .22444 .13882 8420 9.1707 5.2316 .57047 .46127 .21974 .12013

3628 7.4650 4.5187 .60531 .51473 .23968 .13281 8470 9.6042 5.4659 .56911 .43324 .18285 .11626

3700 9.1784 5.2304 .56986 .46665 .23431 .14592 8497 9.4848 5.5213 .58212 .44469 .18589 .11372

3740 8.2976 4.7678 .57460 .45801 .20672 .12509 8501 8.3557 4.8362 .57879 .45332 .18836 .10716

3830 9.4417 5.3722 .56899 .48029 .24412 .13637 8504 7.6570 4.6073 .60171 .50430 .24452 .16494

3835 10.257 6.1291 .59755 .43418 .16076 .11267 8708 7.6465 4.6593 .60934 .49547 .20282 .11392

4001 11.833 8.8333 .74648 .70566 .54717 .54717 8769 9.4678 5.4154 .57198 .43759 .18219 .10158

4008 17.939 10.871 .60600 .48130 .25005 .13574 8879 8.7256 4.8045 .55063 .43463 .20591 .12596

4010 10.939 6.1365 .56099 .43708 .19874 .11080 8884 20.429 11.143 .54545 .56923 .37179 .31197

4051 9.2094 5.2324 .56816 .44112 .18869 .10158 8992 11.235 6.2154 .55321 .39634 .15717 .09513

4052 8.5265 5.1414 .60298 .46873 .17736 .09525 9014 5.9355 3.0851 .51978 .41862 .15859 .07183

4098 9.6250 5.3656 .55746 .41399 .16812 .09792 9023 11.258 6.2442 .55464 .41615 .18350 .10685

4202 8.2125 4.9760 .60591 .48548 .19904 .10939 9247 12.593 6.6638 .52919 .44646 .26152 .22073

4204 8.7018 5.2290 .60090 .50163 .23119 .10642 9278 16.842 8.7427 .51910 .39036 .24966 .19205

4384 10.337 5.9750 .57800 .44208 .19378 .11648 9300 16.321 9.5886 .58749 .43527 .20666 .15198

4386 10.647 5.9897 .56259 .41335 .16654 .09552 9364 13.083 9.4819 .72473 .77486 .62793 .45472

4388 9.3303 5.5415 .59392 .46309 .18375 .09598 9404 8.8094 5.1751 .58746 .46448 .20301 .12166

4393 9.0983 5.1416 .56512 .42708 .17182 .09570 9450 8.5991 4.9502 .57566 .42812 .15725 .09573

4506 9.9936 5.6356 .56392 .42621 .18636 .11472 9503 12.165 6.9084 .56790 .46076 .24361 .15410

4692 9.1626 4.9240 .53740 .41506 .18849 .11686 9629 9.3335 5.5061 .58994 .46613 .20433 .11561

4812 9.2992 5.2210 .56145 .43015 .17978 .09772 9719 8.8999 5.0834 .57118 .44295 .19452 .12020

4865 10.135 5.7642 .56877 .43511 .18963 .10752 9724 9.1364 5.4292 .59424 .45412 .18014 .11094

4969 8.1847 5.3098 .64875 .55828 .26879 .15473 9748 9.2402 5.4792 .59297 .43284 .14250 .08358

4975 9.3086 5.2734 .56651 .42587 .17421 .10560 9762 8.0407 4.5420 .56487 .48769 .25818 .15852

4978 8.5325 5.1038 .59816 .47789 .20644 .12142
Appendix 3 153

Appendix 3–3.5. L-moments of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0017 26.684 18.614 0.69757 0.52852 0.20095 0.03183 5063 21.111 6.5278 0.30921 0.39088 0.67477 0.37812

0026 13.046 7.5036 .57517 .43810 .19437 .10511 5068 13.978 8.1350 .58199 .44939 .22548 .13953

0179 10.307 6.3235 .61352 .45520 .15525 .07739 5108 12.933 7.5241 .58177 .43522 .19262 .11889

0188 11.278 6.9500 .61626 .50569 .24676 .13694 5329 17.444 11.974 .68640 .71343 .54258 .40625

0215 10.946 6.3153 .57697 .44583 .20322 .12109 5463 10.290 6.3749 .61952 .47117 .18108 .10626

0242 10.775 6.5090 .60410 .49970 .25863 .15742 5581 27.889 15.327 .54957 .49888 .36381 .21487

0256 12.064 7.2703 .60265 .45160 .18938 .11764 5582 11.985 6.9709 .58165 .46733 .21730 .10620

0260 16.739 11.308 .67556 .60583 .44535 .39943 5589 10.841 6.5870 .60759 .45078 .16967 .10321

0292 11.672 7.1564 .61311 .46012 .18904 .12393 5648 10.332 6.3482 .61440 .47875 .20190 .11547

0293 10.555 6.5194 .61769 .48359 .20890 .12360 5662 14.612 8.3220 .56953 .42283 .19431 .12452

0296 12.970 7.7294 .59595 .47008 .23246 .14803 5664 11.383 6.8777 .60423 .44196 .16359 .09854

0535 10.499 6.5220 .62118 .46603 .16229 .07512 6130 12.628 7.2866 .57703 .42246 .17588 .10586

0537 10.757 6.4115 .59605 .43675 .15977 .09226 6328 11.104 6.4290 .57897 .44987 .20942 .12812

0670 11.898 7.1317 .59943 .44263 .17573 .10485 6391 12.786 6.8386 .53486 .29487 .03865 .02984

0814 5.8571 4.3196 .73749 .78620 .54048 .32214 6485 12.248 7.1552 .58418 .41977 .16120 .09733

0908 9.4377 6.0040 .63617 .50745 .19770 .08400 6612 11.588 7.4485 .64277 .46061 .11028 -.00987

0912 10.061 6.0534 .60166 .49237 .23398 .12844 6616 10.604 6.2589 .59027 .44490 .18416 .11273

1148 18.000 12.148 .67487 .63436 .47090 .34753 6620 10.720 6.5345 .60953 .45168 .16694 .10088

1168 13.237 7.5871 .57319 .41991 .17899 .11200 6627 10.960 6.6758 .60912 .47531 .21232 .12953

1391 23.273 14.896 .64007 .47977 .22867 .16416 6638 11.847 7.0968 .59905 .44530 .18259 .11381

1436 13.503 7.7567 .57446 .45179 .21899 .12805 6643 13.748 8.0797 .58769 .45723 .22167 .13826

1437 12.465 7.3407 .58888 .41109 .14150 .08796 6656 13.737 8.1213 .59119 .45788 .20972 .11140

1544 13.441 8.0623 .59981 .43804 .17808 .11115 6661 13.694 7.8449 .57286 .41638 .17588 .11063

1684 10.849 6.4676 .59616 .44500 .17706 .10726 6729 11.763 6.7560 .57433 .42596 .17254 .09422

1688 12.887 7.8135 .60633 .46177 .20093 .10700 6740 8.9148 5.3924 .60488 .48257 .20058 .09957

1750 10.146 6.1600 .60712 .46754 .19353 .11521 6760 10.627 6.3153 .59426 .47263 .22592 .13818

1855 20.957 11.261 .53734 .40591 .18904 .08075 6859 11.376 6.7676 .59489 .45250 .19404 .11367

1891 -- -- -- -- -- -- 6926 18.500 8.5989 .46481 .28307 .18095 .08220

1900 11.854 6.8103 .57452 .44355 .20228 .11663 6935 11.189 6.6855 .59749 .44564 .18019 .10959

1902 10.827 6.3966 .59078 .43085 .16201 .09900 6940 -- -- -- -- -- --

1909 18.950 12.129 .64005 .61843 .45273 .32233 6944 11.311 6.7650 .59809 .44020 .17162 .10541

1954 29.167 18.095 .62039 .48587 .23420 .09947 7080 12.927 7.5501 .58406 .43153 .17889 .10414

2145 10.772 6.4647 .60015 .45695 .18672 .10024 7196 10.219 6.1222 .59908 .45514 .18069 .09990

2242 18.864 11.236 .59564 .53354 .32370 .23153 7201 12.729 7.3105 .57431 .39150 .11755 .04908

2309 13.601 7.7060 .56657 .42648 .20862 .15756 7309 10.864 6.4853 .59695 .44108 .17400 .11224

2334 9.8436 6.1885 .62868 .49912 .21296 .12379 7358 12.955 7.3673 .56871 .43699 .19807 .11518

2500 24.692 13.487 .54621 .47079 .19132 -.03612 7372 20.727 11.688 .56391 .44800 .23018 .14714

2654 11.605 6.9561 .59940 .42512 .14192 .08526 7412 9.4229 5.9446 .63086 .51676 .23058 .11927

2665 10.611 6.3470 .59814 .48384 .23652 .14208 7556 10.987 6.7796 .61705 .45312 .15024 .06830

2678 18.846 10.410 .55238 .31706 .08061 .09031 7588 10.621 6.7538 .63591 .53081 .26303 .14766

2849 10.543 6.4703 .61370 .47666 .20205 .11827 7660 9.6714 6.0422 .62475 .49809 .20732 .10261

2852 10.125 6.3594 .62809 .48071 .17317 .07714 7675 10.572 6.4034 .60570 .45140 .17097 .10126

2994 12.487 7.4224 .59441 .45723 .18986 .09041 7705 11.178 6.8245 .61056 .46774 .19408 .10728

2997 11.784 6.5927 .55944 .42721 .18124 .08666 7714 11.086 6.8161 .61482 .50689 .25637 .15590

3002 9.1798 5.7661 .62813 .51463 .22781 .11808 7732 11.588 6.7338 .58108 .43357 .17534 .09286

3281 10.667 6.5060 .60994 .48175 .21652 .12548 7739 11.059 6.5564 .59284 .43391 .16306 .09289

3286 11.394 6.7524 .59263 .44875 .18650 .10217 8029 9.4402 5.8017 .61458 .50988 .25218 .15408

3304 10.472 6.2781 .59953 .46483 .19419 .10054 8092 -- -- -- -- -- --

3353 22.706 16.537 .72830 .72290 .53764 .32260 8101 9.6041 6.0108 .62585 .49531 .19884 .09576

3407 13.601 8.1179 .59685 .42607 .17127 .11364 8290 11.119 6.7283 .60513 .46809 .20303 .11290

3497 10.771 6.6200 .61462 .47885 .20585 .11977 8420 10.784 6.3857 .59215 .48288 .24411 .14595

3628 9.6721 5.9907 .61938 .49450 .20869 .10596 8470 10.870 6.6937 .61582 .52126 .29199 .20648

3700 11.494 6.7843 .59026 .47304 .22694 .12805 8497 11.826 7.0980 .60019 .45365 .19190 .11250

3740 10.252 6.0750 .59254 .45945 .19848 .11014 8501 10.624 6.3580 .59847 .45906 .18933 .10070

3830 11.456 6.6909 .58405 .46537 .20834 .10262 8504 9.3289 5.7162 .61274 .49524 .23011 .14176

3835 14.038 8.6276 .61458 .45789 .21434 .16731 8708 9.9842 6.1818 .61916 .47507 .18158 .09651

4001 11.833 8.8333 .74648 .70566 .54717 .54717 8769 11.930 6.9505 .58262 .43545 .18241 .10648

4008 17.939 10.871 .60600 .48130 .25005 .13574 8879 11.822 6.9235 .58566 .47295 .23290 .12544

4010 13.259 7.6159 .57438 .43484 .19065 .10825 8884 20.429 11.143 .54545 .56923 .37179 .31197

4051 11.632 7.0032 .60207 .47466 .21679 .11866 8992 13.803 7.8399 .56800 .40850 .17008 .10664

4052 11.078 6.9418 .62661 .48219 .19506 .10913 9014 9.7037 5.6101 .57814 .41242 .10603 .01048

4098 11.756 6.7542 .57455 .42525 .17908 .10790 9023 14.037 7.9490 .56628 .41502 .17965 .10623

4202 10.453 6.4287 .61498 .46913 .18350 .10309 9247 18.348 10.190 .55536 .42214 .26399 .28805

4204 11.370 6.7659 .59507 .43999 .14866 .04453 9278 21.529 12.375 .57480 .52822 .45361 .41154

4384 12.862 7.5925 .59032 .44406 .19285 .11179 9300 22.583 12.772 .56554 .43206 .28411 .25230

4386 13.551 7.6554 .56492 .39832 .15771 .09844 9364 13.917 10.004 .71882 .74110 .56474 .38771

4388 12.724 8.2974 .65208 .52929 .24144 .11374 9404 11.100 6.6661 .60056 .46158 .19838 .11494

4393 10.934 6.3743 .58300 .43823 .18023 .10103 9450 10.924 6.4896 .59404 .44029 .17430 .10530

4506 11.911 6.8848 .57803 .43520 .19210 .11473 9503 14.836 8.6296 .58168 .45669 .22409 .13184

4692 10.754 5.9408 .55244 .42322 .19385 .11834 9629 11.630 6.9834 .60047 .45460 .18592 .10207

4812 11.393 6.6372 .58255 .44703 .19504 .10997 9719 10.868 6.4547 .59391 .45276 .18989 .10439

4865 12.594 7.3997 .58757 .44731 .19772 .11099 9724 12.149 7.2957 .60052 .43772 .16778 .09991

4969 10.159 6.8751 .67676 .58057 .29696 .17339 9748 12.219 7.2830 .59603 .41726 .14426 .09753

4975 11.450 6.7697 .59123 .45458 .20629 .12885 9762 10.218 6.0406 .59119 .48605 .23386 .12616

4978 10.545 6.3814 .60516 .46350 .19044 .10777
154 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–3.6. L-moments of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0017 38.867 26.067 0.67067 0.41502 0.04331 -0.01801 5063 21.111 6.5278 0.30921 0.39088 0.67477 0.37812

0026 23.697 14.752 .62255 .46236 .19634 .10047 5068 28.042 17.467 .62289 .44888 .16610 .04271

0179 18.584 12.031 .64737 .47640 .19092 .10801 5108 22.574 14.017 .62093 .46475 .21339 .12692

0188 19.442 12.773 .65696 .51299 .22874 .10685 5329 58.300 29.633 .50829 .18391 -.15660 -.10330

0215 20.376 13.012 .63860 .48828 .21974 .11624 5463 21.185 13.511 .63775 .45042 .16498 .09109

0242 19.284 12.655 .65622 .51824 .24460 .12379 5581 54.250 31.220 .57548 .28027 -.06010 -.12966

0256 23.522 14.868 .63208 .45837 .18868 .10148 5582 22.554 13.942 .61817 .47048 .20730 .10295

0260 37.750 23.583 .62472 .42691 .13030 -.05157 5589 20.757 13.303 .64091 .46795 .18971 .10432

0292 22.809 14.901 .65329 .49570 .23413 .14733 5648 19.656 12.699 .64607 .47783 .19295 .09927

0293 19.855 13.071 .65836 .49659 .20668 .09913 5662 27.099 16.877 .62280 .46454 .21380 .13154

0296 25.374 16.052 .63261 .46800 .19191 .08924 5664 21.712 13.603 .62654 .44681 .17879 .10407

0535 23.200 15.034 .64801 .46357 .17970 .10630 6130 24.158 15.037 .62245 .45610 .19746 .11367

0537 24.054 16.240 .67514 .50644 .20254 .07726 6328 20.023 12.959 .64723 .51638 .25768 .13728

0670 23.774 15.051 .63310 .45772 .19030 .11355 6391 26.864 15.682 .58376 .31511 -.00569 -.05997

0814 16.494 12.355 .74907 .62615 .30680 .14292 6485 23.863 15.010 .62902 .46025 .20168 .12359

0908 19.333 12.981 .67145 .50675 .20622 .10268 6612 46.400 31.111 .67050 .37554 -.06314 -.17911

0912 18.726 12.383 .66127 .52436 .25174 .13822 6616 21.471 13.643 .63544 .47187 .20144 .10752

1148 50.500 29.909 .59226 .27264 -.09997 -.12665 6620 19.973 12.922 .64698 .47443 .19080 .10316

1168 23.775 14.672 .61711 .45666 .20704 .12905 6627 21.632 13.996 .64700 .48632 .21067 .10939

1391 35.824 23.618 .65928 .43462 .11831 .05547 6638 23.510 15.001 .63807 .46562 .19371 .10685

1436 24.556 14.942 .60849 .45153 .19821 .11227 6643 23.317 14.796 .63457 .49205 .23057 .12318

1437 25.464 15.894 .62420 .43738 .16516 .08609 6656 25.554 15.553 .60862 .43202 .16929 .08651

1544 25.972 16.227 .62478 .45098 .19536 .12034 6661 26.649 16.182 .60722 .43157 .17893 .10230

1684 21.389 13.657 .63851 .46765 .19061 .10014 6729 22.861 14.291 .62515 .46578 .20450 .11600

1688 20.463 13.628 .66601 .52201 .24971 .13957 6740 17.406 11.250 .64629 .47499 .17413 .07559

1750 20.373 13.035 .63982 .46480 .18325 .09879 6760 18.507 11.895 .64273 .49651 .22894 .12552

1855 54.615 39.744 .72770 .62903 .42035 .35505 6859 21.992 13.957 .63466 .46800 .19510 .10098

1891 -- -- -- -- -- -- 6926 41.222 23.778 .57682 .28371 -.01636 -.10648

1900 22.849 14.232 .62286 .46141 .19558 .10242 6935 22.676 14.274 .62946 .45221 .18213 .10307

1902 23.107 14.621 .63276 .45493 .18272 .10106 6940 -- -- -- -- -- --

1909 38.200 25.143 .65819 .45455 .09688 -.10396 6944 22.018 13.968 .63441 .45748 .18309 .09966

1954 46.357 29.379 .63376 .42828 .15509 .12598 7080 24.482 15.340 .62659 .46030 .19689 .11172

2145 18.477 11.674 .63179 .47488 .20926 .11927 7196 19.585 12.510 .63876 .47456 .20050 .11241

2242 46.714 26.110 .55893 .30976 .01400 -.08475 7201 24.738 14.975 .60535 .42548 .16665 .09753

2309 27.205 15.727 .57809 .37167 .11884 .06580 7309 23.321 14.787 .63405 .45436 .17874 .09596

2334 19.125 12.685 .66326 .50425 .21970 .12329 7358 23.848 14.487 .60749 .45254 .20264 .11829

2500 45.000 24.861 .55247 .31652 .01756 -.10247 7372 40.867 25.667 .62806 .47116 .19209 .11793

2654 22.023 14.096 .64004 .47292 .21475 .14670 7412 17.920 11.942 .66640 .51031 .21412 .10329

2665 18.234 11.716 .64253 .49553 .21673 .09893 7556 22.618 14.394 .63641 .44090 .15019 .07952

2678 41.500 30.214 .72806 .64657 .47400 .51418 7588 20.048 13.708 .68375 .53405 .23528 .10700

2849 20.481 13.290 .64888 .48151 .19845 .10401 7660 17.834 11.883 .66632 .51080 .21413 .10036

2852 16.330 10.789 .66069 .50156 .21085 .12145 7675 20.833 13.649 .65516 .49614 .22024 .12128

2994 23.703 14.605 .61615 .43967 .17393 .10743 7705 21.631 13.939 .64437 .47460 .19627 .10692

2997 22.218 13.599 .61206 .44512 .16687 .07303 7714 20.416 13.315 .65218 .50419 .22423 .10727

3002 16.909 11.347 .67108 .52525 .23395 .12005 7732 21.129 13.448 .63648 .47787 .21138 .12124

3281 20.247 12.998 .64197 .47663 .19505 .09578 7739 23.564 14.766 .62666 .43883 .16304 .08806

3286 22.514 14.311 .63566 .46958 .19939 .10977 8029 19.047 12.555 .65917 .51082 .23242 .12325

3304 19.692 12.715 .64569 .48563 .20213 .09864 8092 -- -- -- -- -- --

3353 45.917 27.947 .60865 .38379 .03913 -.12108 8101 19.809 13.196 .66614 .50107 .20585 .10452

3407 25.232 16.088 .63761 .46099 .20135 .13199 8290 21.977 14.216 .64685 .48193 .20520 .10996

3497 21.668 14.019 .64699 .47980 .20394 .11628 8420 20.016 13.067 .65281 .50895 .22997 .10673

3628 18.473 12.122 .65617 .49359 .20061 .09973 8470 24.743 16.570 .66968 .49058 .18635 .07825

3700 21.235 13.638 .64225 .49912 .23277 .12390 8497 22.515 14.223 .63173 .45913 .18735 .10180

3740 20.402 13.237 .64878 .49746 .22440 .11782 8501 20.831 13.547 .65036 .49432 .21886 .11658

3830 20.566 13.414 .65224 .51338 .23513 .11782 8504 18.314 11.792 .64391 .48540 .20871 .10903

3835 34.265 20.102 .58667 .40039 .17836 .11419 8708 20.255 13.064 .64499 .46510 .17669 .09549

4001 -- -- -- -- -- -- 8769 22.512 14.223 .63182 .47473 .21656 .12936

4008 23.367 15.107 .64651 .51203 .22782 .04948 8879 21.373 13.590 .63585 .49117 .21653 .08992

4010 24.884 15.220 .61162 .44503 .18282 .09578 8884 -- -- -- -- -- --

4051 21.680 13.842 .63849 .47800 .19896 .09336 8992 26.901 16.367 .60843 .43596 .18677 .11131

4052 22.590 14.744 .65269 .47723 .19010 .09769 9014 19.841 12.377 .62380 .42213 .09477 -.01429

4098 22.075 13.904 .62983 .46756 .20036 .10720 9023 25.605 15.650 .61123 .44700 .18928 .09919

4202 19.607 12.641 .64473 .46996 .18343 .09733 9247 61.250 40.023 .65343 .45486 .19225 .15055

4204 20.089 13.625 .67823 .53773 .25436 .13388 9278 47.091 26.364 .55985 .40598 .15115 -.08448

4384 24.038 15.061 .62655 .45646 .18860 .10072 9300 50.733 29.457 .58063 .32886 .07881 .04452

4386 24.528 15.019 .61232 .44513 .19253 .11075 9364 34.125 23.892 .70012 .50137 .12147 -.06148

4388 22.988 14.805 .64404 .46047 .16360 .06976 9404 20.900 13.393 .64082 .47617 .19797 .10093

4393 20.985 13.141 .62622 .46470 .20231 .11554 9450 21.865 13.926 .63692 .46896 .19959 .11161

4506 23.244 14.339 .61686 .44886 .18812 .10246 9503 26.371 16.036 .60808 .43652 .17799 .09874

4692 21.868 13.986 .63956 .49426 .22405 .10586 9629 22.173 13.991 .63099 .45671 .18369 .10275

4812 22.170 13.821 .62344 .45707 .18719 .09595 9719 19.195 12.556 .65416 .50325 .22604 .11941

4865 22.875 14.359 .62773 .46271 .19303 .09866 9724 25.118 15.658 .62340 .44357 .17869 .09574

4969 18.383 12.655 .68840 .54021 .24723 .13829 9748 25.706 15.468 .60174 .39854 .14263 .09037

4975 21.381 13.827 .64668 .49069 .21546 .11023 9762 19.108 12.404 .64916 .50882 .22986 .10901

4978 20.488 13.131 .64093 .47281 .19436 .10296
Appendix 3 155

Appendix 3–3.7. L-moments of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in Oklahoma.

[--, not available]

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0017 75.273 37.091 0.49275 0.08301 -0.08905 0.06454 5063 44.714 27.143 0.60703 0.56000 0.26316 -0.31930

0026 38.744 25.221 .65097 .47703 .19897 .10224 5068 46.517 29.024 .62394 .40173 .09213 -.00326

0179 31.872 21.071 .66113 .47923 .19711 .10865 5108 37.430 24.048 .64248 .47553 .21845 .13479

0188 30.529 20.725 .67885 .51588 .22083 .09873 5329 89.625 62.161 .69356 .58633 .36627 .33697

0215 35.665 23.630 .66254 .48919 .20606 .10495 5463 35.742 23.339 .65298 .45890 .17769 .10132

0242 31.024 20.685 .66675 .49077 .19042 .07441 5581 112.00 66.107 .59024 .36575 .24311 .41491

0256 40.215 25.694 .63890 .44627 .17209 .09239 5582 36.791 24.049 .65367 .49862 .22733 .12263

0260 81.455 54.873 .67366 .49945 .26138 .23940 5589 37.057 23.912 .64528 .45125 .17487 .10200

0292 38.412 25.420 .66178 .48329 .20543 .10741 5648 34.362 22.365 .65086 .46157 .17912 .09694

0293 33.879 22.526 .66489 .48369 .19861 .10953 5662 43.562 27.163 .62356 .44247 .19249 .12589

0296 42.134 27.118 .64361 .46318 .19517 .12074 5664 38.534 24.422 .63377 .43900 .16863 .09245

0535 43.450 28.326 .65192 .46983 .22332 .17178 6130 41.967 26.462 .63054 .44146 .17229 .09183

0537 41.615 27.143 .65224 .44144 .14454 .07933 6328 31.571 20.496 .64920 .47838 .19486 .08390

0670 41.624 26.292 .63164 .43443 .16687 .09857 6391 87.308 51.346 .58811 .28553 -.00327 -.03962

0814 28.388 22.570 .79506 .66677 .34430 .12682 6485 40.900 26.199 .64056 .45805 .19978 .12998

0908 31.740 21.090 .66445 .47620 .18756 .10899 6612 71.500 50.464 .70579 .55980 .34536 .22788

0912 30.370 20.423 .67249 .50425 .21304 .10116 6616 37.614 24.170 .64259 .45246 .17271 .08917

1148 104.75 38.821 .37061 -.11132 -.02668 .10764 6620 37.289 23.578 .63231 .41789 .13811 .08375

1168 41.975 26.513 .63163 .44835 .18287 .10208 6627 41.267 27.580 .66834 .48069 .18208 .07693

1391 87.727 58.764 .66984 .51134 .31828 .31250 6638 40.205 25.740 .64021 .44704 .17548 .10445

1436 40.664 25.438 .62557 .45280 .19789 .12440 6643 41.515 26.077 .62815 .43234 .14818 .05796

1437 43.559 27.704 .63600 .44649 .18355 .11068 6656 44.368 28.034 .63184 .43387 .15803 .08406

1544 45.296 28.604 .63149 .44569 .19007 .11877 6661 46.861 28.602 .61035 .41262 .15871 .09868

1684 38.459 24.849 .64612 .44763 .16179 .08227 6729 41.392 26.643 .64368 .45798 .18073 .09556

1688 34.272 22.091 .64459 .45257 .17294 .09306 6740 33.084 21.894 .66176 .47774 .19326 .11209

1750 34.435 22.378 .64985 .46315 .18780 .11050 6760 29.689 19.800 .66692 .49495 .20076 .08497

1855 89.900 58.544 .65122 .44638 .17699 .10552 6859 38.464 24.572 .63882 .44585 .17057 .09595

1891 -- -- -- -- -- -- 6926 122.40 92.900 .75899 .64047 .49946 .39182

1900 38.705 24.990 .64567 .47045 .19832 .10783 6935 39.994 25.448 .63630 .44173 .17275 .10320

1902 42.616 27.388 .64266 .45973 .20539 .13860 6940 -- -- -- -- -- --

1909 68.364 35.800 .52367 .12240 -.13806 .03851 6944 39.255 25.392 .64686 .45833 .18686 .10976

1954 81.100 58.767 .72462 .60011 .41779 .43751 7080 43.972 28.176 .64077 .45613 .18460 .10288

2145 26.836 18.446 .68736 .54566 .27586 .15790 7196 34.446 22.443 .65153 .46234 .17841 .09380

2242 127.00 65.071 .51237 .28375 .37816 .50274 7201 47.792 32.500 .68004 .53446 .27828 .17060

2309 41.105 26.344 .64089 .47595 .22862 .14974 7309 42.285 26.880 .63568 .43421 .16441 .10413

2334 36.878 24.531 .66520 .47536 .18685 .10322 7358 43.978 27.310 .62099 .44121 .18902 .12121

2500 74.143 38.952 .52537 .12176 -.09169 .17482 7372 75.091 47.436 .63172 .47694 .25003 .30855

2654 39.260 25.248 .64309 .45859 .19343 .11501 7412 31.180 21.075 .67589 .49419 .19465 .09367

2665 29.779 19.822 .66563 .49596 .20007 .08133 7556 36.621 23.838 .65093 .45980 .19048 .12825

2678 56.571 42.190 .74579 .71242 .60609 .70767 7588 30.876 21.619 .70020 .53428 .23226 .11165

2849 35.724 23.713 .66379 .48306 .19755 .10009 7660 31.173 20.984 .67315 .48829 .18617 .08481

2852 26.279 17.095 .65052 .44477 .13431 .04741 7675 36.843 23.970 .65061 .46375 .18707 .10372

2994 41.512 26.416 .63635 .45039 .18029 .10273 7705 36.314 23.126 .63685 .43812 .16159 .09339

2997 32.636 21.293 .65243 .50417 .24154 .14166 7714 29.926 19.786 .66116 .49067 .20242 .09712

3002 27.654 19.119 .69136 .53069 .23994 .12866 7732 36.052 23.532 .65271 .47491 .20324 .12098

3281 33.983 22.158 .65203 .46813 .18779 .10242 7739 42.184 26.374 .62521 .41954 .15535 .10123

3286 40.258 25.991 .64559 .45766 .18267 .10078 8029 29.279 19.364 .66136 .47813 .18034 .07827

3304 33.180 22.241 .67030 .49675 .20844 .10706 8092 -- -- -- -- -- --

3353 88.875 62.804 .70665 .57293 .38755 .41370 8101 33.411 22.068 .66049 .46417 .16985 .09075

3407 45.900 30.917 .67357 .49721 .22301 .12783 8290 38.193 24.793 .64915 .46668 .19584 .11357

3497 36.289 23.612 .65066 .46408 .18824 .10966 8420 36.133 23.932 .66234 .48198 .19467 .10278

3628 32.510 22.018 .67727 .50190 .21276 .11640 8470 37.400 24.274 .64903 .49349 .26867 .20714

3700 38.953 25.276 .64889 .46192 .17519 .08463 8497 40.349 25.553 .63331 .43699 .16787 .10148

3740 36.715 24.184 .65870 .47375 .18858 .10120 8501 36.989 24.075 .65087 .46215 .18000 .09686

3830 36.549 24.499 .67031 .50089 .21338 .10686 8504 32.717 21.694 .66308 .48286 .19830 .10822

3835 65.988 38.980 .59070 .39935 .17224 .10238 8708 35.882 23.555 .65645 .46435 .18368 .11061

4001 -- -- -- -- -- -- 8769 38.990 25.357 .65033 .47304 .19828 .10522

4008 32.148 22.670 .70516 .59133 .32862 .16502 8879 33.805 22.326 .66045 .50157 .21686 .09334

4010 40.926 25.873 .63217 .45756 .20074 .12546 8884 -- -- -- -- -- --

4051 35.260 22.521 .63869 .44282 .15544 .07557 8992 49.531 30.870 .62325 .44149 .19290 .12407

4052 38.759 25.591 .66024 .47091 .18837 .10619 9014 37.861 24.360 .64339 .42593 .11788 .04466

4098 38.423 24.782 .64499 .46299 .19141 .11016 9023 43.861 27.585 .62892 .44599 .17842 .09436

4202 33.999 22.315 .65633 .46981 .19015 .10940 9247 101.00 52.417 .51898 .18101 -.00500 -.00500

4204 37.942 24.287 .64012 .43442 .15259 .09462 9278 85.625 57.518 .67174 .49891 .26979 .27290

4384 40.959 26.233 .64047 .45300 .17837 .09698 9300 105.10 74.344 .70737 .42864 -.03593 -.23928

4386 43.471 28.123 .64695 .47437 .21043 .12131 9364 77.545 46.582 .60070 .26047 -.05549 .02244

4388 48.903 35.479 .72550 .54930 .22431 .06698 9404 36.124 23.473 .64979 .45742 .17026 .08588

4393 38.141 24.436 .64067 .45947 .19441 .11765 9450 39.791 26.199 .65841 .48049 .20556 .11601

4506 42.305 26.298 .62163 .42933 .16503 .09197 9503 43.595 28.660 .65742 .50339 .24222 .13646

4692 38.261 24.595 .64282 .46361 .18451 .09152 9629 37.474 23.842 .63624 .43757 .15877 .08827

4812 40.240 25.556 .63510 .43987 .15815 .07562 9719 33.061 21.637 .65447 .46495 .17658 .09245

4865 37.938 24.579 .64787 .46721 .19140 .10425 9724 46.812 28.925 .61790 .43154 .18683 .12485

4969 39.226 26.944 .68690 .51368 .23865 .15848 9748 43.899 26.616 .60629 .40570 .16571 .11233

4975 38.714 24.924 .64380 .44941 .16563 .08366 9762 32.973 22.025 .66797 .50127 .21487 .10713

4978 35.552 22.744 .63973 .44178 .16085 .08743
156 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–4.1. Empirical distribution of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available]

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 0.04 0.09 0.42 1.18 2.45 -- -- 5063 -- -- 0.04 0.06 0.35 0.93 1.34 -- --

0026 0.02 0.03 .05 .10 .30 .75 1.39 2.77 3.33 5068 0.01 0.01 .03 .05 .20 .53 1.06 1.83 2.27

0179 .10 .10 .10 .10 .20 .60 1.20 2.70 3.52 5108 .02 .02 .05 .10 .30 .79 1.57 3.33 4.47

0188 .02 .02 .05 .10 .23 .55 1.10 2.28 2.95 5329 -- -- .10 .28 .68 1.25 1.96 -- --

0215 .02 .02 .05 .10 .25 .63 1.26 2.49 3.36 5463 .03 .05 .10 .10 .20 .50 1.00 2.20 2.58

0242 .02 .02 .05 .10 .25 .63 1.20 2.32 3.05 5581 -- -- .07 .23 .47 1.56 2.42 -- --

0256 .03 .04 .10 .10 .30 .80 1.60 3.10 3.72 5582 .01 .02 .04 .07 .24 .65 1.44 3.64 3.82

0260 -- -- .04 .09 .43 1.02 2.05 -- -- 5589 .10 .10 .10 .10 .20 .70 1.30 2.86 3.20

0292 .10 .10 .10 .10 .30 .70 1.50 3.30 3.97 5648 .02 .03 .10 .10 .20 .50 1.10 2.46 3.00

0293 .03 .05 .10 .10 .20 .70 1.40 2.73 3.72 5662 .01 .01 .03 .07 .25 .70 1.31 2.82 3.51

0296 .01 .01 .03 .07 .25 .64 1.31 2.71 3.51 5664 .02 .10 .10 .10 .30 .70 1.40 3.03 3.96

0535 .10 .10 .10 .10 .20 .70 1.50 2.96 3.50 6130 .02 .02 .05 .10 .28 .70 1.38 2.80 3.51

0537 .10 .10 .10 .10 .20 .60 1.40 2.86 3.35 6328 .02 .02 .05 .12 .31 .78 1.41 3.17 4.56

0670 .02 .04 .10 .10 .30 .80 1.60 3.20 4.10 6391 -- -- .03 .09 .22 .65 1.48 -- --

0814 .01 .01 .02 .08 .23 .65 1.25 2.41 3.98 6485 .02 .03 .07 .10 .25 .69 1.32 2.70 3.30

0908 .02 .02 .05 .10 .17 .40 .81 2.00 2.76 6612 -- -- .10 .10 .20 .80 1.40 -- --

0912 .01 .01 .03 .05 .15 .38 .80 1.53 1.95 6616 .03 .04 .10 .10 .23 .70 1.30 2.60 3.37

1148 -- -- .15 .28 .71 1.65 2.60 -- -- 6620 .10 .10 .10 .10 .20 .62 1.40 2.80 3.53

1168 .02 .03 .06 .11 .35 .85 1.60 3.27 3.93 6627 .02 .03 .10 .10 .30 .73 1.40 2.79 3.74

1391 -- -- .06 .21 .47 .95 1.86 -- -- 6638 .02 .03 .08 .10 .27 .70 1.40 2.90 3.50

1436 .02 .02 .05 .10 .30 .75 1.62 3.21 3.72 6643 .02 .02 .05 .09 .23 .75 1.65 5.06 6.12

1437 .10 .10 .10 .10 .30 .80 1.50 3.10 3.74 6656 .01 .01 .01 .04 .16 .55 1.09 2.08 2.63

1544 .02 .03 .10 .10 .30 .80 1.51 3.10 3.84 6661 .01 .01 .01 .04 .17 .59 1.22 2.50 3.12

1684 .03 .04 .10 .10 .25 .70 1.30 2.74 3.45 6729 .02 .02 .06 .10 .29 .70 1.36 2.60 3.15

1688 .02 .02 .05 .11 .35 .71 1.28 3.55 4.25 6740 .02 .02 .06 .10 .19 .40 .80 1.70 2.45

1750 .02 .04 .10 .10 .30 .70 1.30 2.40 3.20 6760 .02 .03 .05 .10 .30 .74 1.33 2.74 3.47

1855 -- -- .06 .16 .45 .82 1.26 -- -- 6859 .02 .03 .09 .10 .30 .70 1.40 2.80 3.50

1891 -- -- -- .09 .15 1.89 -- -- -- 6926 -- -- .05 .09 .29 1.37 1.63 -- --

1900 .01 .02 .04 .08 .26 .70 1.33 2.62 3.26 6935 .02 .03 .10 .10 .20 .69 1.30 2.79 3.54

1902 .10 .10 .10 .10 .30 .80 1.50 2.90 3.95 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- .05 .12 .52 .96 1.51 -- -- 6944 .03 .03 .10 .10 .20 .66 1.30 2.60 3.30

1954 -- -- .06 .18 .40 .82 1.40 -- -- 7080 .02 .02 .05 .10 .30 .80 1.53 2.80 3.69

2145 .02 .02 .05 .11 .41 .83 1.35 2.27 2.93 7196 .02 .03 .08 .10 .28 .70 1.35 2.70 3.35

2242 -- -- .05 .17 .65 1.22 2.47 -- -- 7201 .01 .02 .03 .07 .20 .59 1.23 2.36 3.15

2309 .01 .02 .04 .10 .26 .82 1.39 2.71 3.48 7309 .10 .10 .10 .10 .30 .70 1.40 2.60 3.60

2334 .10 .10 .10 .10 .20 .60 1.20 2.50 3.47 7358 .02 .02 .05 .10 .28 .68 1.35 2.79 3.46

2500 -- -- .07 .10 .52 1.75 3.92 -- -- 7372 -- -- .10 .15 .48 .91 1.70 -- --

2654 .10 .10 .10 .10 .30 .70 1.40 2.76 3.58 7412 .02 .03 .07 .10 .20 .41 .87 1.85 2.50

2665 .02 .02 .05 .10 .30 .72 1.40 2.72 3.76 7556 .10 .10 .10 .10 .20 .60 1.40 2.90 3.40

2678 -- -- .06 .17 .46 1.40 2.40 -- -- 7588 .02 .02 .05 .10 .26 .62 1.33 2.50 3.34

2849 .02 .03 .09 .10 .20 .59 1.20 2.66 3.31 7660 .03 .04 .10 .10 .20 .50 1.00 2.06 2.60

2852 .10 .10 .10 .10 .20 .60 1.10 2.95 3.28 7675 .10 .10 .10 .10 .30 .70 1.40 2.60 3.64

2994 .02 .02 .04 .09 .28 .75 1.50 2.89 4.06 7705 .03 .04 .10 .10 .30 .70 1.40 2.79 3.50

2997 .02 .02 .04 .10 .33 .89 1.71 3.38 5.21 7714 .02 .02 .04 .09 .24 .60 1.26 2.32 2.69

3002 .02 .03 .06 .10 .20 .40 .87 1.60 2.05 7732 .02 .02 .05 .10 .32 .80 1.47 2.82 3.49

3281 .02 .02 .06 .10 .21 .66 1.30 2.70 3.56 7739 .10 .10 .10 .10 .30 .80 1.50 2.95 3.70

3286 .02 .03 .07 .10 .30 .76 1.42 2.72 3.70 8029 .02 .02 .06 .10 .25 .60 1.24 2.52 2.90

3304 .02 .02 .05 .10 .20 .51 1.00 2.10 2.75 8092 -- -- -- .33 .45 .55 -- -- --

3353 -- -- .05 .11 .69 1.32 2.13 -- -- 8101 .03 .04 .10 .10 .20 .50 1.05 2.34 2.81

3407 .01 .01 .01 .03 .12 .42 1.00 2.53 3.49 8290 .02 .03 .10 .10 .30 .70 1.40 2.72 3.40

3497 .02 .03 .10 .10 .20 .60 1.20 2.42 3.04 8420 .02 .02 .05 .13 .36 .83 1.49 2.77 3.32

3628 .02 .02 .05 .10 .17 .40 .90 1.70 2.11 8470 -- .05 .07 .14 .52 1.05 1.39 4.86 --

3700 .02 .02 .05 .11 .30 .73 1.42 2.96 3.99 8497 .02 .03 .10 .10 .30 .80 1.53 3.06 3.70

3740 .02 .02 .05 .10 .23 .60 1.20 2.49 3.20 8501 .02 .02 .07 .10 .27 .70 1.32 2.80 3.77

3830 .01 .02 .04 .10 .28 .64 1.19 2.47 4.21 8504 .10 .10 .10 .10 .20 .60 1.00 2.00 2.90

3835 .01 .01 .02 .06 .22 .63 1.10 1.99 2.18 8708 .10 .10 .10 .10 .20 .60 1.20 2.68 3.54

4001 -- -- .06 .28 .81 1.34 2.32 -- -- 8769 .02 .02 .05 .10 .30 .76 1.50 2.80 3.39

4008 -- .01 .04 .05 .21 .65 1.42 2.10 -- 8879 .01 .02 .03 .05 .18 .55 1.12 2.04 3.07

4010 .02 .02 .04 .10 .28 .75 1.45 2.99 3.62 8884 -- -- .05 .13 .23 .74 1.04 -- --

4051 .02 .03 .06 .10 .27 .70 1.30 2.74 3.77 8992 .01 .01 .01 .04 .18 .63 1.25 2.75 3.39

4052 .10 .10 .10 .10 .30 .70 1.50 3.20 3.92 9014 -- .02 .05 .12 .30 .73 1.70 2.96 --

4098 .02 .03 .06 .10 .29 .70 1.30 2.83 3.71 9023 .01 .02 .05 .10 .30 .80 1.58 3.24 4.28

4202 .03 .05 .10 .10 .20 .60 1.20 2.50 3.18 9247 -- -- .06 .16 .42 .92 1.79 -- --

4204 .01 .01 .03 .07 .22 .47 .90 2.48 3.48 9278 -- -- .05 .20 .40 .99 2.18 -- --

4384 .02 .03 .08 .10 .30 .80 1.60 3.13 3.78 9300 -- -- .05 .11 .45 1.22 2.93 -- --

4386 .02 .02 .05 .10 .30 .80 1.51 2.80 3.56 9364 -- -- .12 .18 .45 1.08 1.46 -- --

4388 .01 .03 .07 .10 .22 .65 1.24 3.00 3.76 9404 .02 .02 .05 .10 .22 .58 1.12 2.26 2.90

4393 .02 .02 .05 .10 .25 .70 1.30 2.77 3.50 9450 .10 .10 .10 .10 .30 .80 1.50 3.00 3.60

4506 .02 .02 .06 .10 .27 .70 1.40 2.77 3.43 9503 .01 .02 .05 .09 .21 .65 1.25 2.41 3.06

4692 .01 .02 .04 .08 .25 .70 1.20 2.62 3.35 9629 .02 .02 .05 .10 .22 .66 1.28 2.70 3.31

4812 .02 .02 .05 .10 .25 .70 1.31 2.77 3.18 9719 .02 .02 .06 .14 .37 .89 1.69 3.23 3.99

4865 .02 .02 .05 .10 .30 .77 1.50 2.90 3.72 9724 .10 .10 .10 .10 .30 .70 1.40 3.02 3.84

4969 .02 .02 .04 .09 .23 .60 1.25 2.18 2.40 9748 .10 .10 .10 .10 .20 .70 1.40 3.00 3.68

4975 .02 .03 .10 .10 .30 .80 1.50 3.27 3.86 9762 .02 .02 .04 .09 .22 .54 1.01 2.20 2.58

4978 .02 .03 .10 .10 .28 .70 1.30 2.70 3.60
Appendix 3 157

Appendix 3–4.2. Empirical distribution of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available]

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 0.06 0.10 0.48 1.24 3.38 -- -- 5063 -- -- 0.04 0.06 0.35 0.93 1.34 -- --

0026 0.02 0.03 .06 .12 .33 .80 1.41 2.85 4.01 5068 0.01 0.01 .03 .05 .22 .65 1.06 1.87 2.29

0179 .10 .10 .10 .10 .20 .60 1.30 2.90 3.60 5108 .02 .03 .06 .10 .32 .83 1.63 3.53 4.49

0188 .02 .03 .05 .10 .25 .59 1.14 2.31 3.10 5329 -- -- .10 .31 .73 1.32 1.98 -- --

0215 .02 .02 .05 .10 .28 .66 1.31 2.58 3.46 5463 .03 .05 .10 .10 .20 .50 1.10 2.25 2.90

0242 .02 .02 .05 .10 .26 .65 1.23 2.37 3.08 5581 -- -- .10 .25 .50 1.62 2.43 -- --

0256 .03 .04 .10 .10 .30 .81 1.70 3.22 4.10 5582 .02 .02 .04 .08 .26 .67 1.45 3.66 3.89

0260 -- -- .05 .12 .46 1.14 2.09 -- -- 5589 .10 .10 .10 .10 .20 .70 1.40 2.90 3.48

0292 .10 .10 .10 .10 .30 .80 1.70 3.30 4.08 5648 .03 .04 .10 .10 .20 .60 1.20 2.54 3.09

0293 .04 .05 .10 .10 .30 .70 1.50 2.92 4.14 5662 .01 .02 .03 .08 .29 .75 1.39 2.87 3.77

0296 .01 .01 .04 .07 .25 .66 1.40 2.87 3.60 5664 .05 .10 .10 .10 .30 .80 1.50 3.20 4.05

0535 .10 .10 .10 .10 .30 .70 1.60 3.00 3.80 6130 .02 .02 .05 .10 .30 .75 1.41 2.90 3.78

0537 .10 .10 .10 .10 .30 .70 1.40 2.90 3.47 6328 .02 .03 .05 .13 .34 .80 1.45 3.38 4.60

0670 .03 .04 .10 .10 .30 .90 1.70 3.43 4.38 6391 -- -- .03 .08 .22 .65 1.58 -- --

0814 .01 .01 .03 .08 .24 .66 1.25 2.43 4.02 6485 .02 .03 .08 .10 .30 .70 1.40 2.90 3.50

0908 .02 .02 .06 .10 .20 .41 .88 2.00 2.80 6612 -- -- .10 .10 .20 .90 1.46 -- --

0912 .01 .01 .03 .05 .16 .40 .82 1.59 1.98 6616 .03 .04 .10 .10 .30 .70 1.40 2.70 3.41

1148 -- -- .15 .28 .71 1.65 2.60 -- -- 6620 .10 .10 .10 .10 .30 .70 1.50 3.00 3.89

1168 .02 .03 .06 .13 .38 .90 1.71 3.36 4.16 6627 .03 .04 .10 .10 .30 .80 1.50 2.90 3.78

1391 -- -- .08 .22 .63 1.05 1.90 -- -- 6638 .02 .03 .08 .10 .30 .77 1.50 2.98 3.70

1436 .02 .02 .05 .11 .31 .79 1.66 3.31 4.06 6643 .02 .02 .05 .10 .24 .75 1.66 5.27 6.15

1437 .10 .10 .10 .10 .30 .80 1.70 3.18 3.84 6656 .01 .01 .01 .04 .19 .60 1.20 2.12 2.71

1544 .02 .04 .10 .10 .30 .81 1.60 3.30 4.00 6661 .01 .01 .02 .05 .19 .64 1.27 2.63 3.37

1684 .03 .04 .10 .10 .30 .73 1.40 2.84 3.67 6729 .02 .03 .06 .10 .30 .75 1.40 2.65 3.36

1688 .02 .03 .05 .15 .40 .75 1.31 3.59 4.25 6740 .02 .03 .06 .10 .20 .40 .85 1.73 2.47

1750 .03 .04 .10 .10 .30 .70 1.38 2.50 3.30 6760 .02 .03 .07 .12 .33 .79 1.45 2.86 3.56

1855 -- -- .08 .19 .54 .86 1.40 -- -- 6859 .02 .03 .09 .10 .30 .80 1.46 2.97 3.69

1891 -- -- -- .09 .15 1.89 -- -- -- 6926 -- -- .05 .09 .20 1.44 2.06 -- --

1900 .01 .02 .04 .09 .28 .75 1.38 2.69 3.37 6935 .03 .03 .10 .10 .29 .70 1.40 2.90 3.68

1902 .10 .10 .10 .10 .30 .80 1.60 3.00 4.40 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- .05 .21 .56 1.06 1.52 -- -- 6944 .03 .03 .10 .10 .30 .70 1.40 2.80 3.50

1954 -- -- .07 .25 .47 1.06 1.48 -- -- 7080 .02 .02 .05 .10 .32 .83 1.58 2.96 4.06

2145 .03 .03 .05 .14 .45 .85 1.41 2.34 2.98 7196 .02 .03 .08 .10 .30 .74 1.40 2.82 3.49

2242 -- -- .05 .22 .85 1.39 2.60 -- -- 7201 .01 .02 .03 .08 .21 .60 1.26 2.68 3.18

2309 .01 .02 .04 .10 .29 .84 1.50 3.05 3.81 7309 .10 .10 .10 .10 .30 .80 1.50 2.70 3.70

2334 .10 .10 .10 .10 .30 .70 1.31 2.60 3.59 7358 .02 .02 .05 .10 .29 .70 1.41 2.90 3.59

2500 -- -- .07 .11 .53 1.79 3.97 -- -- 7372 -- -- .11 .29 .56 .94 1.78 -- --

2654 .10 .10 .10 .10 .30 .70 1.50 2.80 3.60 7412 .02 .03 .07 .10 .20 .48 .90 1.95 2.51

2665 .02 .02 .05 .11 .31 .75 1.45 3.04 3.99 7556 .10 .10 .10 .10 .20 .70 1.60 3.10 3.94

2678 -- -- .08 .21 .46 1.45 2.42 -- -- 7588 .02 .03 .05 .10 .27 .65 1.40 2.58 3.70

2849 .02 .03 .09 .10 .21 .60 1.20 2.80 3.90 7660 .03 .04 .10 .10 .20 .50 1.00 2.10 2.88

2852 .10 .10 .10 .10 .20 .60 1.30 3.04 3.36 7675 .10 .10 .10 .10 .30 .80 1.50 2.70 3.70

2994 .02 .02 .04 .09 .30 .79 1.58 3.16 4.06 7705 .03 .05 .10 .10 .30 .80 1.49 2.90 3.70

2997 .02 .03 .05 .10 .35 .90 1.71 3.47 5.34 7714 .02 .02 .05 .10 .25 .60 1.30 2.35 2.73

3002 .02 .03 .06 .10 .20 .45 .90 1.63 2.14 7732 .02 .03 .05 .11 .35 .83 1.51 2.89 3.59

3281 .02 .03 .07 .10 .26 .70 1.40 2.89 3.86 7739 .10 .10 .10 .10 .30 .80 1.50 3.10 3.74

3286 .02 .03 .08 .10 .31 .80 1.50 2.97 3.97 8029 .02 .03 .06 .10 .26 .67 1.28 2.61 2.93

3304 .02 .02 .05 .10 .20 .56 1.07 2.20 2.94 8092 -- -- -- .33 .45 .55 -- -- --

3353 -- -- .04 .20 .94 1.77 2.40 -- -- 8101 .03 .04 .10 .10 .20 .57 1.10 2.40 2.82

3407 .01 .01 .01 .03 .16 .48 1.10 2.63 3.52 8290 .03 .04 .10 .10 .30 .78 1.50 2.80 3.78

3497 .02 .03 .10 .10 .27 .60 1.30 2.60 3.30 8420 .02 .02 .06 .14 .38 .85 1.54 2.81 3.36

3628 .02 .02 .05 .10 .19 .43 .91 1.80 2.21 8470 -- .05 .10 .17 .55 1.20 1.46 5.28 --

3700 .02 .03 .06 .12 .33 .78 1.51 3.29 4.18 8497 .03 .04 .10 .10 .35 .88 1.61 3.20 4.01

3740 .02 .02 .06 .10 .26 .65 1.30 2.61 3.43 8501 .02 .03 .07 .10 .30 .70 1.40 2.90 3.83

3830 .02 .02 .05 .10 .29 .67 1.24 2.81 4.62 8504 .10 .10 .10 .10 .20 .62 1.07 2.28 2.98

3835 .01 .01 .02 .06 .24 .65 1.12 1.99 2.19 8708 .10 .10 .10 .10 .20 .60 1.20 2.70 3.68

4001 -- -- -- .23 .83 1.74 -- -- -- 8769 .02 .02 .05 .10 .30 .80 1.60 2.88 3.43

4008 -- -- .05 .10 .29 .80 1.49 -- -- 8879 .01 .01 .03 .06 .20 .56 1.16 2.06 3.24

4010 .02 .02 .05 .10 .30 .78 1.54 3.15 3.81 8884 -- -- .05 .13 .23 .74 1.04 -- --

4051 .02 .03 .06 .10 .30 .70 1.40 2.82 3.90 8992 .01 .01 .02 .05 .21 .69 1.35 2.79 3.51

4052 .10 .10 .10 .10 .30 .80 1.60 3.30 4.00 9014 -- .02 .05 .12 .30 .71 1.71 3.40 --

4098 .02 .03 .06 .10 .30 .75 1.38 2.98 3.80 9023 .02 .02 .05 .10 .33 .86 1.65 3.32 4.40

4202 .03 .05 .10 .10 .25 .60 1.25 2.68 3.20 9247 -- -- .07 .17 .53 .99 1.80 -- --

4204 .01 .02 .03 .10 .24 .50 1.00 2.75 3.65 9278 -- -- .05 .24 .43 1.25 2.37 -- --

4384 .02 .03 .09 .10 .34 .85 1.70 3.24 4.11 9300 -- -- .05 .13 .52 1.30 3.01 -- --

4386 .02 .02 .05 .10 .31 .85 1.60 3.15 3.65 9364 -- -- .14 .19 .45 1.15 1.61 -- --

4388 .02 .04 .08 .12 .24 .68 1.29 3.00 4.15 9404 .02 .02 .06 .10 .25 .60 1.20 2.40 2.96

4393 .02 .02 .05 .10 .28 .70 1.32 2.85 3.62 9450 .10 .10 .10 .10 .30 .80 1.60 3.10 3.73

4506 .02 .02 .06 .10 .30 .76 1.43 2.83 3.53 9503 .01 .02 .05 .10 .25 .67 1.26 2.52 3.17

4692 .01 .02 .04 .08 .27 .71 1.25 2.65 3.49 9629 .02 .02 .05 .10 .26 .70 1.35 2.80 3.50

4812 .02 .03 .06 .10 .28 .74 1.38 2.86 3.39 9719 .02 .03 .06 .15 .40 .92 1.81 3.27 4.00

4865 .02 .02 .05 .10 .30 .80 1.60 3.06 4.00 9724 .10 .10 .10 .10 .30 .80 1.50 3.20 4.47

4969 .02 .02 .05 .10 .24 .66 1.29 2.22 2.42 9748 .10 .10 .10 .10 .30 .80 1.50 3.08 4.15

4975 .02 .04 .10 .10 .39 .84 1.60 3.39 4.12 9762 .02 .02 .04 .10 .24 .56 1.06 2.26 2.64

4978 .02 .03 .10 .10 .30 .70 1.42 2.95 3.80
158 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–4.3. Empirical distribution of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available] 

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 0.08 0.24 0.54 1.57 4.99 -- -- 5063 -- -- 0.05 0.09 0.35 1.19 1.47 -- --

0026 0.02 0.03 .06 .14 .38 .86 1.50 3.00 4.21 5068 0.01 0.01 .04 .08 .25 .70 1.24 1.94 2.34

0179 .10 .10 .10 .10 .30 .70 1.40 3.10 3.80 5108 .02 .03 .07 .11 .36 .90 1.80 3.84 4.63

0188 .02 .03 .05 .10 .29 .60 1.25 2.53 3.66 5329 -- -- .15 .33 .81 1.53 2.02 -- --

0215 .02 .02 .06 .10 .30 .70 1.39 2.91 3.52 5463 .04 .05 .10 .10 .20 .60 1.30 2.40 3.00

0242 .02 .03 .05 .10 .28 .68 1.30 2.73 3.52 5581 -- -- .09 .30 .78 1.77 2.55 -- --

0256 .03 .05 .10 .10 .40 .90 1.80 3.50 4.71 5582 .02 .02 .04 .09 .30 .70 1.50 3.69 4.23

0260 -- -- .05 .12 .50 1.42 2.28 -- -- 5589 .10 .10 .10 .10 .30 .80 1.50 3.00 3.92

0292 .10 .10 .10 .10 .40 .90 1.80 3.50 4.25 5648 .03 .04 .10 .10 .25 .60 1.30 2.70 3.38

0293 .04 .05 .10 .10 .30 .80 1.60 3.20 4.33 5662 .01 .02 .04 .10 .33 .80 1.48 3.07 3.79

0296 .01 .01 .04 .07 .26 .76 1.54 3.03 3.65 5664 .08 .10 .10 .10 .30 .90 1.65 3.40 4.27

0535 .10 .10 .10 .10 .30 .80 1.70 3.22 3.80 6130 .02 .02 .06 .10 .33 .81 1.54 3.10 3.90

0537 .10 .10 .10 .10 .30 .80 1.60 2.90 3.62 6328 .03 .03 .06 .14 .39 .85 1.61 3.44 5.00

0670 .03 .05 .10 .10 .40 1.00 1.90 3.80 4.75 6391 -- -- .03 .08 .27 .65 1.54 -- --

0814 .01 .01 .03 .08 .25 .69 1.27 2.54 4.10 6485 .02 .03 .09 .10 .30 .80 1.50 3.00 3.69

0908 .02 .02 .06 .10 .20 .45 .98 2.18 2.88 6612 -- -- .10 .10 .30 .95 1.48 -- --

0912 .01 .01 .03 .06 .16 .42 .85 1.63 2.01 6616 .03 .04 .10 .10 .30 .80 1.50 2.90 3.60

1148 -- -- .18 .32 1.34 2.21 2.70 -- -- 6620 .10 .10 .10 .10 .30 .80 1.60 3.31 4.01

1168 .02 .03 .07 .15 .41 .98 1.88 3.62 4.40 6627 .02 .04 .10 .10 .36 .90 1.60 3.02 3.94

1391 -- -- .10 .21 .53 1.38 3.45 -- -- 6638 .02 .03 .09 .10 .31 .85 1.60 3.20 4.05

1436 .02 .03 .05 .12 .34 .85 1.80 3.41 4.42 6643 .02 .03 .05 .10 .30 .93 1.88 5.85 6.32

1437 .10 .10 .10 .10 .40 .90 1.80 3.56 4.60 6656 .01 .01 .01 .05 .21 .66 1.23 2.50 3.52

1544 .03 .04 .10 .10 .40 .90 1.80 3.60 4.20 6661 .01 .01 .02 .05 .23 .70 1.36 2.92 3.53

1684 .03 .04 .10 .10 .30 .80 1.50 3.20 4.16 6729 .02 .03 .07 .10 .33 .81 1.50 2.71 3.52

1688 .02 .03 .06 .17 .46 .92 1.48 3.64 4.25 6740 .02 .03 .07 .10 .20 .44 .90 1.89 2.52

1750 .03 .04 .10 .10 .30 .80 1.50 2.70 3.40 6760 .02 .03 .07 .13 .35 .82 1.57 3.01 3.79

1855 -- -- .11 .26 .72 1.05 2.77 -- -- 6859 .03 .03 .10 .10 .33 .82 1.53 3.10 3.90

1891 -- -- -- .13 .17 2.77 -- -- -- 6926 -- -- .05 .09 .21 1.71 2.53 -- --

1900 .01 .02 .05 .10 .30 .80 1.51 2.93 3.64 6935 .03 .04 .10 .10 .30 .80 1.57 3.30 3.90

1902 .10 .10 .10 .10 .40 .90 1.70 3.27 4.63 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- .04 .14 .63 1.33 1.60 -- -- 6944 .03 .04 .10 .10 .30 .80 1.52 3.00 3.69

1954 -- -- .05 .27 .50 1.33 2.63 -- -- 7080 .02 .03 .06 .10 .36 .90 1.70 3.19 4.25

2145 .02 .03 .05 .20 .49 .87 1.45 2.41 3.04 7196 .02 .03 .10 .10 .30 .80 1.50 3.02 3.70

2242 -- -- .07 .30 .88 1.56 2.70 -- -- 7201 .01 .02 .03 .08 .23 .62 1.32 2.73 3.21

2309 .02 .02 .04 .10 .30 .90 1.52 3.38 3.87 7309 .10 .10 .10 .10 .40 .90 1.70 3.10 4.10

2334 .10 .10 .10 .10 .30 .70 1.40 3.09 3.89 7358 .02 .02 .05 .11 .31 .77 1.51 3.28 3.91

2500 -- -- .10 .19 .60 1.89 4.07 -- -- 7372 -- -- .12 .26 .60 1.37 2.60 -- --

2654 .10 .10 .10 .10 .30 .80 1.60 2.90 3.90 7412 .03 .03 .08 .10 .20 .50 1.00 2.06 2.60

2665 .02 .02 .05 .12 .33 .82 1.50 3.25 4.04 7556 .10 .10 .10 .10 .30 .70 1.77 3.25 4.25

2678 -- -- .07 .23 .53 2.09 2.47 -- -- 7588 .02 .02 .05 .10 .28 .70 1.45 2.77 4.11

2849 .02 .03 .10 .10 .29 .68 1.30 3.01 4.10 7660 .04 .05 .10 .10 .22 .53 1.10 2.20 3.05

2852 .10 .10 .10 .10 .30 .70 1.40 3.08 3.42 7675 .10 .10 .10 .10 .30 .90 1.60 2.90 4.14

2994 .02 .02 .04 .10 .31 .82 1.73 3.78 4.29 7705 .04 .05 .10 .10 .33 .85 1.57 3.14 4.05

2997 .02 .03 .05 .12 .40 .98 1.99 3.89 5.57 7714 .02 .03 .05 .10 .28 .68 1.34 2.50 3.37

3002 .02 .03 .07 .10 .20 .50 .92 1.83 2.29 7732 .02 .03 .05 .12 .38 .89 1.62 3.07 4.53

3281 .02 .03 .07 .10 .30 .73 1.50 3.15 4.07 7739 .10 .10 .10 .10 .40 .90 1.60 3.40 4.08

3286 .02 .03 .08 .10 .36 .90 1.59 3.21 4.15 8029 .02 .03 .06 .10 .29 .70 1.31 2.62 3.37

3304 .02 .02 .05 .10 .23 .60 1.15 2.31 3.01 8092 -- -- -- .33 .45 .55 -- -- --

3353 -- -- .06 .26 .94 2.04 3.05 -- -- 8101 .03 .04 .10 .10 .21 .60 1.20 2.50 2.90

3407 .01 .01 .01 .04 .17 .53 1.18 2.78 4.18 8290 .03 .04 .10 .11 .35 .85 1.60 3.14 4.02

3497 .02 .03 .10 .10 .30 .70 1.40 2.86 3.58 8420 .02 .02 .06 .15 .40 .88 1.60 3.06 4.21

3628 .02 .02 .05 .10 .20 .50 1.00 1.98 2.46 8470 -- .05 .10 .20 .59 1.24 1.49 5.42 --

3700 .02 .03 .06 .12 .36 .82 1.60 3.38 4.78 8497 .03 .04 .10 .10 .40 .92 1.80 3.51 4.42

3740 .02 .02 .06 .10 .30 .70 1.40 2.69 3.52 8501 .02 .03 .08 .10 .30 .80 1.50 3.02 4.04

3830 .02 .02 .05 .11 .30 .70 1.36 2.98 4.67 8504 .10 .10 .10 .10 .30 .70 1.40 2.41 3.03

3835 .01 .01 .02 .08 .25 .69 1.36 2.22 2.71 8708 .10 .10 .10 .10 .30 .70 1.30 3.03 3.90

4001 -- -- -- .35 1.04 1.82 -- -- -- 8769 .02 .02 .05 .11 .33 .85 1.70 3.14 3.65

4008 -- -- .05 .14 .33 .95 1.60 -- -- 8879 .01 .02 .03 .07 .20 .60 1.25 2.53 3.44

4010 .02 .03 .05 .12 .32 .84 1.66 3.37 3.93 8884 -- -- -- .14 .23 .61 -- -- --

4051 .03 .03 .07 .10 .30 .80 1.50 3.00 3.92 8992 .01 .01 .02 .06 .24 .75 1.47 2.93 3.88

4052 .10 .10 .10 .10 .30 .90 1.70 3.60 4.30 9014 -- .02 .05 .14 .30 .81 1.73 3.44 --

4098 .03 .03 .07 .11 .32 .80 1.48 3.26 3.98 9023 .02 .02 .06 .12 .38 .95 1.80 3.69 4.67

4202 .03 .05 .10 .10 .30 .70 1.40 2.90 3.76 9247 -- -- .08 .19 .65 1.21 1.89 -- --

4204 .01 .02 .04 .10 .25 .55 1.10 2.88 3.76 9278 -- -- .05 .24 .64 1.41 2.50 -- --

4384 .03 .04 .10 .11 .40 .98 1.80 3.45 4.25 9300 -- -- .06 .25 .79 1.89 3.10 -- --

4386 .02 .03 .06 .10 .36 .92 1.70 3.28 3.84 9364 -- -- .15 .21 .65 1.15 1.66 -- --

4388 .02 .05 .08 .12 .28 .75 1.40 3.05 4.42 9404 .02 .03 .06 .10 .28 .65 1.30 2.60 3.15

4393 .02 .02 .05 .10 .30 .80 1.46 3.05 4.20 9450 .10 .10 .10 .10 .40 .90 1.76 3.20 3.90

4506 .02 .03 .07 .10 .32 .86 1.55 3.19 3.92 9503 .02 .02 .05 .10 .27 .79 1.42 2.63 3.92

4692 .02 .02 .05 .10 .31 .76 1.33 2.72 3.58 9629 .02 .02 .06 .10 .30 .77 1.50 3.00 3.83

4812 .02 .03 .06 .10 .30 .80 1.49 3.00 3.58 9719 .02 .03 .07 .16 .43 1.00 1.90 3.51 4.15

4865 .02 .02 .06 .10 .35 .90 1.70 3.41 4.39 9724 .10 .10 .10 .10 .30 .90 1.70 3.52 4.56

4969 .02 .02 .05 .10 .25 .68 1.35 2.26 2.43 9748 .10 .10 .10 .10 .30 .90 1.60 3.20 4.48

4975 .02 .04 .10 .15 .40 .90 1.80 3.56 4.32 9762 .02 .02 .05 .10 .26 .60 1.11 2.32 2.68

4978 .02 .03 .10 .10 .30 .80 1.56 3.17 4.20
Appendix 3 159

Appendix 3–4.4. Empirical distribution of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available]

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 0.08 0.25 0.63 1.83 5.75 -- -- 5063 -- -- 0.05 0.18 0.42 1.29 1.48 -- --

0026 0.02 0.03 .07 .15 .40 .90 1.65 3.73 4.65 5068 0.01 0.01 .05 .08 .30 .80 1.33 2.02 2.38

0179 .10 .10 .10 .10 .30 .80 1.60 3.35 4.09 5108 .02 .03 .08 .13 .40 1.03 1.96 4.10 4.86

0188 .02 .03 .06 .10 .30 .70 1.35 2.92 3.80 5329 -- -- .12 .42 1.10 1.85 2.07 -- --

0215 .02 .03 .06 .12 .33 .79 1.50 3.24 3.81 5463 .04 .05 .10 .10 .20 .64 1.40 2.56 3.26

0242 .02 .03 .05 .11 .30 .75 1.40 3.00 3.82 5581 -- -- .12 .41 1.02 2.18 3.11 -- --

0256 .04 .05 .10 .13 .40 1.00 2.00 3.90 5.07 5582 .02 .02 .04 .10 .31 .78 1.58 3.93 4.53

0260 -- -- .04 .09 .48 1.56 2.92 -- -- 5589 .10 .10 .10 .10 .40 .90 1.70 3.20 4.36

0292 .10 .10 .10 .20 .40 1.00 2.00 3.66 4.43 5648 .03 .04 .10 .10 .30 .70 1.40 2.90 3.80

0293 .04 .06 .10 .10 .35 .90 1.70 3.74 4.46 5662 .01 .02 .04 .11 .36 .86 1.69 3.41 3.97

0296 .01 .01 .04 .08 .30 .83 1.67 3.45 4.34 5664 .06 .10 .10 .10 .40 1.00 1.90 3.70 4.37

0535 .10 .10 .10 .10 .30 .90 1.90 3.45 4.31 6130 .02 .02 .07 .11 .40 .91 1.70 3.40 4.08

0537 .10 .10 .10 .10 .30 .90 1.80 2.95 3.81 6328 .03 .03 .06 .15 .45 .92 1.84 3.92 5.07

0670 .03 .05 .10 .15 .40 1.10 2.00 4.00 5.00 6391 -- -- .04 .10 .33 .65 1.56 -- --

0814 .01 .01 .03 .10 .29 .70 1.32 2.61 4.20 6485 .03 .03 .09 .10 .35 .90 1.64 3.20 3.90

0908 .02 .02 .06 .10 .20 .50 1.09 2.37 3.28 6612 -- -- .10 .10 .25 .95 2.48 -- --

0912 .01 .02 .03 .06 .18 .45 .92 1.82 2.15 6616 .03 .05 .10 .10 .33 .90 1.60 3.20 3.98

1148 -- -- .15 .31 1.39 2.51 3.11 -- -- 6620 .10 .10 .10 .10 .30 .90 1.70 3.50 4.20

1168 .02 .03 .07 .17 .47 1.08 2.05 3.94 5.14 6627 .03 .04 .10 .13 .40 1.00 1.70 3.20 4.30

1391 -- -- .11 .21 .64 1.51 3.71 -- -- 6638 .03 .03 .10 .10 .38 .90 1.74 3.50 4.39

1436 .02 .03 .05 .13 .37 .91 1.97 3.79 4.61 6643 .02 .03 .05 .10 .35 1.08 2.15 6.09 6.40

1437 .10 .10 .10 .20 .50 1.05 1.98 3.70 5.12 6656 .01 .01 .02 .06 .25 .72 1.31 2.73 3.67

1544 .03 .04 .10 .16 .47 1.10 2.00 3.80 4.90 6661 .01 .01 .02 .06 .27 .77 1.49 3.15 3.68

1684 .03 .04 .10 .10 .40 .90 1.70 3.46 4.24 6729 .02 .03 .07 .11 .38 .88 1.65 3.10 3.95

1688 .02 .03 .06 .19 .49 .96 1.49 3.78 4.25 6740 .02 .03 .07 .10 .20 .50 .95 2.02 2.81

1750 .03 .04 .10 .10 .35 .90 1.60 2.99 3.81 6760 .03 .04 .08 .15 .38 .89 1.67 3.16 3.93

1855 -- -- .12 .38 .84 1.68 3.09 -- -- 6859 .03 .04 .10 .11 .40 .90 1.70 3.32 4.01

1891 -- -- -- .13 .17 2.77 -- -- -- 6926 -- -- .04 .14 .52 1.72 3.62 -- --

1900 .02 .02 .05 .10 .33 .87 1.62 3.04 3.90 6935 .03 .04 .10 .10 .35 .90 1.70 3.41 4.09

1902 .10 .10 .10 .20 .40 1.00 1.90 3.51 4.91 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- .05 .17 .71 1.38 1.62 -- -- 6944 .03 .04 .10 .10 .33 .90 1.70 3.20 4.19

1954 -- -- .06 .26 .80 1.66 3.04 -- -- 7080 .02 .03 .06 .12 .40 1.00 1.90 3.62 4.40

2145 .02 .03 .05 .20 .52 .96 1.61 2.79 3.36 7196 .03 .03 .10 .10 .37 .90 1.60 3.20 3.99

2242 -- -- .06 .28 .89 1.62 2.75 -- -- 7201 .01 .02 .04 .08 .28 .67 1.41 2.84 4.32

2309 .02 .02 .04 .10 .32 1.01 1.80 3.58 3.96 7309 .10 .10 .10 .10 .40 1.00 1.80 3.46 4.38

2334 .10 .10 .10 .10 .30 .80 1.50 3.20 4.06 7358 .02 .02 .06 .12 .37 .86 1.68 3.42 3.99

2500 -- -- .10 .27 .60 2.08 4.75 -- -- 7372 -- -- .12 .25 .55 1.50 3.54 -- --

2654 .10 .10 .10 .10 .40 1.00 1.70 3.60 4.20 7412 .03 .03 .08 .10 .21 .55 1.10 2.27 2.70

2665 .02 .03 .05 .13 .38 .87 1.60 3.45 4.12 7556 .10 .10 .10 .10 .30 .80 1.92 3.34 4.34

2678 -- -- .07 .24 .60 2.17 3.65 -- -- 7588 .02 .02 .05 .12 .30 .75 1.57 2.87 4.59

2849 .02 .03 .10 .10 .30 .74 1.40 3.30 4.49 7660 .04 .05 .10 .10 .30 .60 1.19 2.38 3.20

2852 .10 .10 .10 .10 .30 .80 1.63 3.15 3.53 7675 .10 .10 .10 .10 .40 .90 1.80 3.58 4.30

2994 .02 .02 .05 .12 .38 .89 1.84 4.13 5.18 7705 .04 .05 .10 .11 .40 .91 1.70 3.47 4.22

2997 .02 .03 .05 .12 .45 1.05 2.13 4.01 5.70 7714 .02 .03 .05 .11 .29 .72 1.49 2.70 3.59

3002 .02 .03 .07 .10 .20 .51 1.00 2.00 2.35 7732 .02 .03 .05 .15 .40 .97 1.73 3.25 4.73

3281 .02 .03 .08 .10 .30 .80 1.60 3.30 4.40 7739 .10 .10 .10 .20 .40 1.00 1.80 3.70 4.80

3286 .03 .03 .09 .13 .40 .97 1.80 3.51 4.35 8029 .02 .03 .07 .10 .30 .75 1.40 2.72 3.64

3304 .02 .03 .05 .10 .27 .67 1.28 2.58 3.18 8092 -- -- -- .33 .45 .55 -- -- --

3353 -- -- .10 .31 .96 2.13 3.26 -- -- 8101 .03 .04 .10 .10 .26 .68 1.33 2.70 3.10

3407 .01 .01 .01 .05 .23 .63 1.28 2.88 4.47 8290 .03 .04 .10 .14 .40 .93 1.79 3.49 4.78

3497 .02 .03 .10 .10 .30 .75 1.50 3.12 4.10 8420 .02 .03 .06 .15 .46 .96 1.72 3.24 4.27

3628 .02 .02 .05 .10 .20 .50 1.05 2.10 2.80 8470 -- -- .10 .28 .65 1.30 1.67 -- --

3700 .02 .03 .06 .14 .40 .88 1.70 3.89 4.85 8497 .03 .04 .10 .14 .44 1.00 1.95 3.80 4.74

3740 .02 .02 .06 .10 .30 .74 1.50 2.96 3.64 8501 .02 .03 .09 .10 .35 .85 1.60 3.40 4.31

3830 .02 .02 .05 .12 .34 .75 1.40 3.30 5.00 8504 .10 .10 .10 .10 .30 .80 1.50 2.51 3.06

3835 .01 .01 .02 .08 .26 .83 1.57 2.46 2.79 8708 .10 .10 .10 .10 .30 .80 1.40 3.47 4.28

4001 -- -- -- .34 1.42 2.56 -- -- -- 8769 .02 .02 .06 .13 .38 .93 1.77 3.39 3.94

4008 -- -- .05 .13 .35 1.11 1.77 -- -- 8879 .02 .02 .04 .08 .27 .62 1.33 2.62 3.45

4010 .02 .03 .05 .13 .35 .91 1.76 3.50 4.36 8884 -- -- -- .14 .28 .68 -- -- --

4051 .03 .03 .07 .10 .34 .90 1.67 3.40 4.22 8992 .01 .01 .02 .07 .28 .84 1.60 3.18 4.18

4052 .10 .10 .10 .10 .40 1.00 1.90 3.95 4.72 9014 -- .02 .05 .14 .30 .88 1.74 3.46 --

4098 .03 .03 .07 .13 .38 .88 1.61 3.46 4.16 9023 .02 .03 .06 .14 .44 1.07 2.00 4.00 4.87

4202 .03 .05 .10 .10 .30 .80 1.60 3.20 4.00 9247 -- -- .11 .25 .74 1.22 1.99 -- --

4204 .01 .02 .04 .10 .27 .64 1.20 3.04 3.93 9278 -- -- .05 .29 .93 1.54 2.75 -- --

4384 .03 .04 .10 .15 .42 1.10 2.00 3.80 4.95 9300 -- -- .08 .25 .79 1.89 2.99 -- --

4386 .02 .03 .07 .13 .40 1.00 1.90 3.50 4.26 9364 -- -- .14 .21 .81 1.35 1.92 -- --

4388 .02 .05 .08 .12 .32 .98 1.50 3.06 4.51 9404 .02 .03 .06 .10 .30 .71 1.41 2.86 3.40

4393 .02 .02 .06 .10 .35 .85 1.60 3.25 4.30 9450 .10 .10 .10 .20 .40 1.00 2.00 3.54 4.30

4506 .02 .03 .07 .12 .39 .93 1.70 3.38 4.41 9503 .02 .03 .05 .12 .30 .88 1.52 3.14 4.47

4692 .02 .02 .05 .10 .33 .80 1.40 2.85 3.78 9629 .02 .02 .06 .10 .32 .81 1.65 3.27 4.12

4812 .02 .03 .07 .12 .35 .86 1.61 3.10 3.86 9719 .02 .03 .08 .18 .48 1.03 1.93 3.62 4.26

4865 .02 .03 .06 .11 .40 1.00 1.85 3.59 4.78 9724 .10 .10 .10 .10 .40 1.00 1.80 3.70 4.69

4969 .02 .02 .05 .10 .26 .73 1.52 2.40 3.67 9748 .10 .10 .10 .10 .40 1.00 1.90 3.90 4.72

4975 .02 .04 .10 .20 .49 1.00 2.00 3.71 4.50 9762 .02 .02 .05 .10 .27 .64 1.21 2.38 2.77

4978 .03 .03 .10 .10 .40 .90 1.70 3.45 4.30
160 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–4.5. Empirical distribution of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available]

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 0.08 0.25 0.82 2.99 6.11 -- -- 5063 -- -- -- 0.30 0.85 1.34 -- -- --

0026 0.03 0.03 .08 .17 .44 .98 1.79 3.98 4.68 5068 -- 0.01 0.05 .13 .30 .89 1.49 2.39 --

0179 .10 .10 .10 .10 .30 .90 1.80 3.52 4.84 5108 0.02 .03 .08 .15 .45 1.10 2.10 4.34 5.19

0188 .02 .03 .06 .10 .30 .70 1.61 3.28 3.89 5329 -- -- .12 .39 .94 1.87 3.21 -- --

0215 .02 .03 .06 .12 .35 .84 1.60 3.35 3.92 5463 .04 .05 .10 .10 .30 .70 1.50 2.88 3.50

0242 .02 .03 .05 .12 .32 .79 1.45 3.20 4.43 5581 -- -- .27 .65 1.23 2.52 3.37 -- --

0256 .04 .05 .10 .20 .50 1.15 2.20 4.10 5.40 5582 .02 .03 .04 .10 .32 .84 1.77 4.44 5.17

0260 -- -- .04 .13 .49 1.65 3.02 -- -- 5589 .10 .10 .10 .10 .40 1.00 1.80 3.60 4.46

0292 .10 .10 .10 .20 .50 1.10 2.20 3.97 4.67 5648 .03 .04 .10 .10 .30 .72 1.52 3.17 4.10

0293 .04 .05 .10 .14 .40 .98 1.90 3.85 4.66 5662 .02 .02 .04 .13 .40 .92 1.92 3.51 4.52

0296 .01 .02 .04 .09 .31 .86 1.72 3.62 4.43 5664 .06 .10 .10 .20 .40 1.02 2.10 4.01 4.95

0535 .10 .10 .10 .10 .40 1.00 1.90 3.74 4.40 6130 .02 .02 .07 .13 .40 1.00 1.83 3.63 4.30

0537 .10 .10 .10 .20 .40 1.00 2.02 3.30 4.15 6328 .03 .03 .07 .16 .48 .98 1.89 4.00 5.10

0670 .03 .05 .10 .20 .50 1.16 2.20 4.30 5.21 6391 -- -- .03 .11 .36 .90 2.17 -- --

0814 -- .01 .03 .10 .31 .75 1.61 3.58 -- 6485 .03 .03 .10 .12 .40 .96 1.80 3.50 4.13

0908 .02 .03 .07 .10 .20 .51 1.20 2.70 3.39 6612 -- -- .10 .10 .30 1.10 2.56 -- --

0912 .01 .02 .03 .07 .20 .48 .94 2.07 2.75 6616 .04 .05 .10 .12 .40 .90 1.70 3.41 4.10

1148 -- -- .11 .30 1.34 2.55 4.39 -- -- 6620 .10 .10 .10 .10 .40 1.00 1.80 3.70 4.28

1168 .03 .03 .09 .19 .52 1.15 2.20 4.01 5.25 6627 .03 .04 .10 .15 .43 1.02 1.80 3.41 4.69

1391 -- -- .10 .21 .88 1.88 3.85 -- -- 6638 .03 .03 .10 .10 .40 1.00 1.90 3.80 4.50

1436 .02 .03 .05 .15 .40 1.00 2.09 4.13 5.26 6643 .02 .03 .05 .10 .39 1.15 2.46 6.20 6.45

1437 .10 .10 .10 .20 .50 1.20 2.10 4.00 5.23 6656 .01 .01 .02 .06 .27 .76 1.40 2.90 3.60

1544 .03 .04 .10 .20 .50 1.20 2.20 4.10 5.14 6661 .01 .01 .02 .07 .30 .84 1.58 3.40 4.32

1684 .03 .05 .10 .10 .40 .95 1.81 3.67 4.37 6729 .02 .03 .08 .14 .40 .94 1.76 3.39 4.14

1688 .02 .03 .06 .20 .50 1.08 1.88 3.94 4.25 6740 .02 .03 .07 .10 .22 .52 1.14 2.25 3.12

1750 .03 .05 .10 .15 .40 .91 1.80 3.20 3.91 6760 .03 .04 .08 .16 .40 .95 1.84 3.30 4.59

1855 -- -- .12 .38 .84 1.68 3.09 -- -- 6859 .03 .04 .10 .14 .40 1.00 1.80 3.64 4.40

1891 -- -- -- -- .27 -- -- -- -- 6926 -- -- .07 .17 .76 1.87 4.60 -- --

1900 .02 .02 .05 .11 .36 .93 1.70 3.36 4.01 6935 .03 .04 .10 .10 .40 .90 1.80 3.61 4.54

1902 .10 .10 .10 .20 .50 1.10 2.00 3.70 5.03 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- .10 .27 .77 1.43 1.65 -- -- 6944 .03 .04 .10 .10 .40 .96 1.80 3.40 4.40

1954 -- -- .21 .30 1.35 2.67 3.18 -- -- 7080 .02 .03 .07 .15 .45 1.10 2.09 4.00 4.66

2145 .02 .03 .05 .20 .52 1.02 1.79 2.88 3.39 7196 .03 .04 .10 .11 .40 .90 1.70 3.20 4.10

2242 -- -- .16 .36 1.03 1.87 3.03 -- -- 7201 .01 .02 .05 .10 .31 .75 1.53 3.39 4.51

2309 .03 .03 .08 .13 .40 1.07 2.10 3.84 4.23 7309 .10 .10 .10 .12 .40 1.10 1.90 3.70 4.58

2334 .10 .10 .10 .10 .30 .80 1.60 3.74 4.61 7358 .02 .02 .06 .13 .40 .96 1.86 3.51 4.23

2500 -- -- .11 .48 1.14 3.18 4.96 -- -- 7372 -- -- .11 .28 .55 1.73 3.67 -- --

2654 .10 .10 .10 .10 .40 1.00 1.90 3.90 5.03 7412 .03 .03 .08 .10 .25 .60 1.20 2.40 2.86

2665 .02 .03 .05 .14 .40 .93 1.73 3.80 4.20 7556 .10 .10 .10 .10 .40 1.00 2.01 3.54 4.60

2678 -- -- .07 .24 .60 2.17 3.65 -- -- 7588 .02 .03 .05 .12 .32 .80 1.69 3.39 4.89

2849 .03 .04 .10 .10 .30 .80 1.50 3.70 4.71 7660 .04 .05 .10 .10 .30 .69 1.29 2.58 3.45

2852 .10 .10 .10 .10 .40 .88 1.70 3.23 3.57 7675 .10 .10 .10 .10 .40 1.00 1.93 3.80 4.49

2994 .02 .03 .05 .12 .42 .99 2.08 4.32 5.41 7705 .05 .05 .10 .16 .40 1.00 1.90 3.70 4.84

2997 .02 .03 .05 .12 .48 1.16 2.34 4.34 5.71 7714 .02 .03 .05 .12 .31 .73 1.54 3.35 4.31

3002 .02 .03 .07 .10 .23 .59 1.10 2.20 2.54 7732 .02 .03 .06 .16 .44 1.05 1.94 3.40 4.83

3281 .02 .03 .08 .10 .32 .90 1.70 3.60 4.57 7739 .10 .10 .10 .20 .50 1.10 1.91 3.90 5.10

3286 .03 .03 .10 .16 .44 1.00 1.90 3.64 4.45 8029 .02 .03 .07 .12 .30 .81 1.45 2.90 4.14

3304 .02 .03 .05 .10 .30 .73 1.38 2.70 3.30 8092 -- -- -- .33 .45 .55 -- -- --

3353 -- -- .09 .28 .94 2.14 3.60 -- -- 8101 .03 .04 .10 .10 .30 .71 1.44 2.80 3.20

3407 .01 .01 .01 .06 .25 .71 1.33 3.24 4.71 8290 .03 .04 .10 .15 .40 1.00 1.90 3.58 5.03

3497 .02 .03 .10 .10 .34 .80 1.60 3.40 4.90 8420 .02 .03 .07 .18 .50 1.01 1.78 3.33 4.37

3628 .02 .02 .05 .10 .20 .59 1.13 2.21 2.90 8470 -- -- .10 .26 .65 1.32 1.94 -- --

3700 .02 .03 .07 .16 .42 .92 1.77 4.32 5.21 8497 .03 .05 .10 .19 .50 1.10 2.10 3.95 4.99

3740 .02 .03 .06 .10 .31 .80 1.60 3.07 3.89 8501 .02 .03 .10 .11 .40 .90 1.71 3.80 4.70

3830 .02 .02 .06 .13 .41 .80 1.44 3.33 5.07 8504 .10 .10 .10 .10 .35 .80 1.60 3.04 3.74

3835 .01 .01 .03 .09 .27 .88 1.65 3.03 4.19 8708 .10 .10 .10 .10 .30 .80 1.60 3.59 4.59

4001 -- -- -- .34 1.42 2.56 -- -- -- 8769 .02 .02 .06 .15 .42 1.00 1.91 3.57 4.02

4008 -- -- .05 .13 .35 1.11 1.77 -- -- 8879 .02 .02 .05 .10 .29 .78 1.48 3.06 3.45

4010 .02 .03 .06 .14 .40 .96 1.89 3.85 4.49 8884 -- -- -- .14 .28 .68 -- -- --

4051 .03 .04 .07 .12 .39 .98 1.80 3.67 4.39 8992 .01 .01 .02 .07 .31 .90 1.69 3.42 4.43

4052 .10 .10 .10 .10 .40 1.10 2.10 4.27 4.90 9014 -- .02 .06 .20 .40 1.00 1.82 3.54 --

4098 .03 .03 .08 .15 .40 .92 1.73 3.69 4.30 9023 .02 .03 .07 .15 .49 1.16 2.15 4.29 5.19

4202 .04 .06 .10 .10 .35 .85 1.70 3.40 4.14 9247 -- -- .10 .33 .98 1.49 2.53 -- --

4204 .01 .02 .04 .11 .30 .73 1.28 3.18 4.47 9278 -- -- .10 .35 1.06 1.80 2.76 -- --

4384 .03 .04 .10 .18 .50 1.18 2.19 4.07 5.26 9300 -- -- .20 .36 1.05 2.12 3.10 -- --

4386 .02 .03 .07 .15 .47 1.10 2.00 3.67 4.63 9364 -- -- .14 .21 .81 1.35 1.92 -- --

4388 -- .05 .08 .12 .30 .98 1.81 4.63 -- 9404 .02 .03 .06 .10 .31 .79 1.52 3.00 3.71

4393 .02 .02 .06 .10 .39 .90 1.66 3.47 4.67 9450 .10 .10 .10 .20 .45 1.10 2.10 3.70 4.39

4506 .02 .03 .08 .14 .40 1.00 1.80 3.54 4.53 9503 .02 .03 .06 .14 .35 .92 1.61 3.92 4.89

4692 .02 .02 .05 .11 .35 .84 1.47 2.94 3.81 9629 .02 .03 .07 .10 .37 .90 1.80 3.40 4.30

4812 .02 .03 .07 .13 .40 .92 1.73 3.29 4.31 9719 .03 .03 .08 .20 .51 1.07 2.10 3.90 4.56

4865 .02 .03 .07 .14 .40 1.07 1.99 4.05 5.01 9724 .10 .10 .10 .20 .50 1.10 1.90 4.20 5.03

4969 .02 .02 .05 .10 .26 .79 1.59 2.93 4.46 9748 .10 .10 .10 .10 .40 1.10 2.00 4.10 4.80

4975 .02 .04 .10 .20 .50 1.10 2.10 4.08 4.88 9762 .02 .02 .05 .10 .29 .69 1.31 2.50 2.95

4978 .03 .03 .10 .10 .40 .96 1.80 3.60 4.72
Appendix 3 161

Appendix 3–4.6. Empirical distribution of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available] 

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 0.07 0.25 1.17 4.98 6.39 -- -- 5063 -- -- -- 0.30 0.85 1.34 -- -- --

0026 0.03 0.03 .10 .22 .59 1.12 2.13 5.10 6.23 5068 -- 0.01 0.05 .14 .38 1.09 1.74 3.70 --

0179 .10 .10 .10 .20 .40 1.10 2.00 4.10 5.36 5108 0.02 .03 .09 .20 .55 1.30 2.55 5.11 6.94

0188 .03 .03 .07 .13 .40 .85 1.91 3.52 4.41 5329 -- -- .31 .66 1.60 3.70 5.30 -- --

0215 .02 .03 .07 .15 .43 1.00 1.90 3.84 4.40 5463 .03 .05 .10 .10 .35 .90 1.80 3.54 4.17

0242 .02 .03 .05 .14 .37 .92 1.79 4.38 4.65 5581 -- -- .22 .84 2.02 4.31 5.12 -- --

0256 .05 .07 .10 .20 .60 1.41 2.70 5.14 6.21 5582 .02 .03 .05 .12 .38 1.11 2.22 4.60 6.43

0260 -- -- .05 .20 .64 3.15 4.06 -- -- 5589 .10 .10 .10 .20 .50 1.20 2.30 4.20 5.20

0292 .10 .10 .10 .20 .60 1.40 2.50 4.85 6.02 5648 .03 .05 .10 .15 .40 .90 1.90 4.04 4.73

0293 .04 .06 .10 .20 .50 1.20 2.20 4.49 6.20 5662 .02 .02 .05 .16 .49 1.20 2.27 4.96 5.74

0296 .01 .02 .04 .11 .40 1.10 2.31 5.24 6.79 5664 .07 .10 .10 .20 .50 1.28 2.50 4.75 5.33

0535 .10 .10 .10 .20 .50 1.40 2.60 4.42 5.82 6130 .02 .03 .08 .19 .51 1.23 2.30 4.50 5.67

0537 .10 .10 .10 .20 .50 1.30 2.60 4.56 4.90 6328 .03 .03 .08 .18 .53 1.14 2.25 5.16 5.49

0670 .04 .05 .10 .20 .60 1.50 2.70 5.38 6.40 6391 -- -- .04 .13 .45 .86 2.62 -- --

0814 -- .01 .04 .10 .29 .89 2.41 4.25 -- 6485 .03 .04 .10 .20 .50 1.20 2.30 4.34 5.40

0908 .02 .03 .07 .10 .30 .63 1.52 3.09 4.07 6612 -- -- .10 .10 .50 2.48 3.69 -- --

0912 .01 .02 .03 .08 .24 .55 1.22 2.73 2.98 6616 .04 .06 .10 .20 .50 1.10 2.15 4.10 5.26

1148 -- -- .27 .39 2.51 4.70 5.49 -- -- 6620 .10 .10 .10 .10 .50 1.20 2.20 4.40 5.50

1168 .03 .04 .10 .24 .65 1.40 2.67 5.34 6.35 6627 .03 .05 .10 .20 .55 1.27 2.30 4.55 5.74

1391 -- -- .09 .26 1.06 2.81 4.55 -- -- 6638 .03 .03 .10 .19 .53 1.25 2.37 4.70 5.65

1436 .02 .03 .07 .18 .50 1.25 2.65 5.21 6.25 6643 .02 .03 .05 .14 .42 1.30 2.96 6.96 12.55

1437 .10 .10 .10 .30 .70 1.50 2.69 5.46 7.13 6656 .01 .01 .02 .09 .33 .99 1.70 4.20 5.46

1544 .04 .05 .10 .20 .69 1.48 2.80 5.10 6.26 6661 .01 .01 .03 .10 .41 1.06 1.95 4.08 5.12

1684 .03 .05 .10 .20 .50 1.15 2.20 4.30 5.36 6729 .02 .03 .10 .20 .51 1.12 2.14 4.29 5.00

1688 .02 .02 .06 .20 .55 1.10 2.31 4.90 5.13 6740 .02 .03 .08 .10 .30 .61 1.40 2.83 3.35

1750 .03 .05 .10 .20 .50 1.20 2.10 3.90 5.09 6760 .04 .04 .08 .18 .48 1.10 2.14 4.10 5.03

1855 -- -- .10 .32 1.01 2.27 6.89 -- -- 6859 .03 .04 .10 .20 .50 1.20 2.30 4.30 5.28

1891 -- -- -- -- 2.05 -- -- -- -- 6926 -- -- -- .20 1.08 3.53 -- -- --

1900 .02 .02 .06 .15 .47 1.10 2.10 3.95 5.46 6935 .04 .05 .10 .20 .50 1.20 2.30 4.51 5.61

1902 .10 .10 .10 .20 .60 1.40 2.65 4.40 6.58 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- .07 .19 .68 2.46 3.66 -- -- 6944 .04 .05 .10 .18 .50 1.20 2.29 4.39 5.04

1954 -- -- .14 .30 1.42 3.22 4.57 -- -- 7080 .03 .03 .07 .20 .58 1.32 2.58 4.61 5.80

2145 .03 .03 .08 .29 .58 1.26 2.06 3.38 4.91 7196 .03 .04 .10 .20 .50 1.10 2.10 3.80 5.30

2242 -- -- .10 .73 1.66 3.05 4.38 -- -- 7201 .02 .02 .05 .12 .35 .95 1.89 4.32 4.81

2309 .03 .04 .08 .15 .69 1.33 2.52 4.18 4.63 7309 .10 .10 .10 .20 .60 1.30 2.50 4.50 5.70

2334 .10 .10 .10 .10 .40 1.00 1.93 4.30 5.43 7358 .02 .03 .07 .17 .49 1.18 2.13 4.04 5.78

2500 -- -- -- .60 1.70 4.91 -- -- -- 7372 -- -- .08 .45 .84 1.56 4.79 -- --

2654 .10 .10 .10 .20 .50 1.30 2.30 4.93 6.45 7412 .03 .03 .10 .10 .30 .70 1.47 2.71 3.36

2665 .02 .03 .06 .15 .47 1.11 2.11 4.15 5.16 7556 .10 .10 .10 .20 .50 1.35 2.60 4.78 5.59

2678 -- -- -- .16 .62 3.19 -- -- -- 7588 .02 .03 .06 .15 .40 .96 2.22 4.35 5.27

2849 .03 .04 .10 .12 .40 1.00 1.90 4.20 5.80 7660 .04 .05 .10 .12 .33 .80 1.59 3.00 3.96

2852 .10 .10 .10 .10 .40 1.00 2.00 3.69 4.16 7675 .10 .10 .10 .20 .60 1.20 2.30 4.50 5.20

2994 .02 .02 .06 .16 .51 1.23 2.50 5.58 6.42 7705 .05 .06 .10 .20 .60 1.22 2.27 4.60 5.84

2997 .02 .02 .05 .14 .60 1.52 2.64 4.66 7.02 7714 .02 .03 .05 .14 .38 .98 1.96 4.16 4.73

3002 .02 .03 .07 .10 .30 .69 1.30 2.57 3.06 7732 .02 .03 .07 .20 .56 1.26 2.18 4.55 5.58

3281 .02 .03 .10 .13 .43 1.03 2.07 4.31 5.11 7739 .10 .10 .10 .20 .60 1.40 2.50 4.98 6.15

3286 .02 .03 .10 .20 .56 1.30 2.34 4.50 6.00 8029 .02 .03 .08 .15 .39 1.02 1.90 4.05 4.48

3304 .02 .03 .06 .10 .35 .88 1.63 3.27 4.32 8092 -- -- -- -- .50 -- -- -- --

3353 -- -- .10 .53 1.83 3.00 4.71 -- -- 8101 .03 .04 .10 .10 .37 .90 1.82 3.20 3.82

3407 .01 .01 .02 .08 .30 .94 1.57 4.60 5.32 8290 .04 .05 .10 .20 .50 1.23 2.27 4.90 5.76

3497 .02 .03 .10 .19 .41 1.00 2.00 4.30 5.83 8420 .03 .03 .09 .21 .60 1.24 2.04 3.86 4.90

3628 .02 .02 .06 .10 .30 .70 1.30 2.79 3.37 8470 -- -- .15 .30 .79 1.65 3.16 -- --

3700 .03 .03 .08 .19 .50 1.13 2.15 4.95 5.94 8497 .04 .05 .10 .20 .60 1.40 2.60 5.00 6.01

3740 .02 .03 .08 .15 .40 1.00 2.00 3.76 4.42 8501 .02 .03 .10 .15 .50 1.15 2.16 4.60 5.52

3830 .02 .03 .06 .15 .49 .95 1.80 4.55 5.68 8504 .10 .10 .10 .20 .50 .90 1.90 4.02 5.88

3835 .01 .01 .04 .15 .49 1.27 2.00 4.10 4.22 8708 .10 .10 .10 .20 .40 1.00 2.00 4.10 5.32

4001 -- -- -- 1.48 2.27 2.90 -- -- -- 8769 .02 .03 .07 .19 .52 1.28 2.39 4.31 5.75

4008 -- -- .05 .14 .35 1.19 1.84 -- -- 8879 .02 .02 .05 .12 .35 .92 1.71 3.45 4.87

4010 .03 .04 .07 .17 .51 1.23 2.39 4.72 5.23 8884 -- -- -- .40 .85 1.73 -- -- --

4051 .03 .04 .09 .17 .44 1.20 2.20 4.32 5.18 8992 .01 .01 .03 .10 .44 1.12 2.13 4.19 5.37

4052 .10 .10 .10 .20 .60 1.38 2.67 5.07 6.10 9014 -- -- .11 .26 .43 1.39 2.04 -- --

4098 .03 .03 .09 .20 .50 1.10 2.27 4.31 5.25 9023 .02 .03 .09 .20 .62 1.43 2.66 5.08 6.57

4202 .04 .06 .10 .14 .40 1.00 2.10 4.10 5.25 9247 -- -- .08 .54 1.11 2.18 6.07 -- --

4204 .01 .02 .05 .17 .33 .76 1.39 3.59 5.89 9278 -- -- .15 .64 1.35 2.75 4.54 -- --

4384 .03 .04 .10 .20 .60 1.40 2.69 5.20 6.42 9300 -- -- .10 .29 1.65 3.05 7.12 -- --

4386 .03 .03 .09 .20 .60 1.31 2.60 4.50 5.80 9364 -- -- .15 .21 .60 2.35 3.73 -- --

4388 -- .06 .10 .20 .47 1.25 2.12 4.70 -- 9404 .02 .03 .08 .14 .40 .97 1.84 3.50 4.24

4393 .02 .02 .07 .16 .46 1.10 2.10 4.22 5.49 9450 .10 .10 .10 .20 .60 1.38 2.60 4.60 5.69

4506 .02 .03 .10 .20 .56 1.27 2.28 4.32 5.02 9503 .03 .04 .07 .15 .45 1.02 2.12 5.25 6.19

4692 .02 .02 .05 .13 .43 1.05 1.95 3.75 4.99 9629 .02 .03 .08 .14 .44 1.10 2.20 4.12 4.89

4812 .03 .03 .09 .18 .50 1.11 2.13 3.98 5.25 9719 .03 .03 .10 .24 .61 1.32 2.46 4.41 5.00

4865 .02 .03 .08 .19 .53 1.30 2.41 4.81 5.57 9724 .10 .10 .10 .20 .60 1.40 2.50 4.93 6.15

4969 .02 .03 .05 .11 .31 .91 2.11 4.58 5.23 9748 .10 .10 .10 .20 .60 1.40 2.50 4.84 6.10

4975 .02 .04 .10 .20 .60 1.31 2.61 4.75 5.95 9762 .02 .02 .05 .12 .33 .80 1.62 2.91 3.54

4978 .03 .04 .10 .20 .50 1.16 2.20 4.23 5.82
162 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–4.7. Empirical distribution of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available]

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 0.18 0.54 1.26 6.07 6.68 -- -- 5063 -- -- -- 0.76 0.95 1.40 -- -- --

0026 0.03 0.03 .10 .25 .70 1.42 2.65 5.85 7.05 5068 -- 0.01 0.05 .15 .43 1.45 2.47 3.80 --

0179 .10 .10 .10 .20 .50 1.30 2.40 4.88 6.00 5108 0.03 .03 .10 .25 .66 1.56 3.10 6.48 7.70

0188 .03 .03 .08 .16 .42 1.00 2.18 3.88 4.42 5329 -- -- -- .86 1.60 4.24 -- -- --

0215 .02 .03 .08 .18 .50 1.19 2.22 4.49 5.36 5463 .03 .06 .10 .12 .40 1.08 2.20 3.92 4.60

0242 .02 .03 .06 .15 .46 1.04 2.19 4.46 4.85 5581 -- -- -- 1.19 3.05 4.31 -- -- --

0256 .05 .08 .10 .30 .80 1.80 3.24 5.88 6.93 5582 .03 .04 .05 .14 .44 1.36 2.79 5.05 6.95

0260 -- -- .04 .13 1.37 4.05 7.03 -- -- 5589 .10 .10 .10 .20 .70 1.40 2.60 4.98 6.02

0292 .10 .10 .10 .30 .70 1.70 3.10 5.64 7.58 5648 .04 .05 .10 .20 .43 1.10 2.20 4.40 5.30

0293 .05 .08 .10 .20 .60 1.40 2.70 5.76 6.96 5662 .02 .02 .06 .19 .57 1.37 2.65 6.19 6.78

0296 .01 .02 .05 .15 .52 1.31 2.82 6.80 8.29 5664 .06 .10 .10 .27 .70 1.50 2.99 5.42 6.66

0535 .10 .10 .10 .20 .60 1.80 3.00 5.90 7.19 6130 .02 .03 .10 .23 .69 1.50 2.80 5.47 6.97

0537 .10 .10 .10 .20 .70 1.50 2.90 5.32 6.35 6328 .03 .03 .10 .20 .61 1.28 2.71 5.35 6.53

0670 .04 .05 .10 .30 .80 1.90 3.25 6.12 7.12 6391 -- -- .04 .23 .47 2.37 7.24 -- --

0814 -- .01 .03 .10 .29 1.18 3.03 4.52 -- 6485 .03 .04 .10 .21 .62 1.46 2.67 5.11 6.44

0908 .02 .03 .09 .10 .30 .80 1.80 3.57 4.95 6612 -- -- -- .20 .50 2.23 -- -- --

0912 .01 .02 .03 .09 .26 .66 1.38 2.94 3.71 6616 .05 .06 .10 .20 .60 1.40 2.51 5.08 6.65

1148 -- -- -- 1.80 4.69 5.84 -- -- -- 6620 .10 .10 .10 .20 .60 1.43 2.60 5.34 6.98

1168 .03 .04 .10 .30 .81 1.75 3.17 5.90 8.16 6627 .03 .05 .10 .20 .69 1.51 3.04 5.98 7.80

1391 -- -- .11 .43 1.44 4.27 6.99 -- -- 6638 .03 .04 .10 .20 .68 1.50 2.98 5.65 6.31

1436 .02 .03 .08 .23 .60 1.55 3.16 5.88 6.80 6643 .03 .04 .07 .15 .55 1.68 3.29 7.73 13.98

1437 .10 .10 .10 .40 .80 1.80 3.30 6.63 7.60 6656 .01 .01 .03 .10 .45 1.20 1.99 5.28 6.97

1544 .04 .06 .10 .30 .80 1.75 3.42 6.39 7.46 6661 .01 .01 .03 .13 .53 1.30 2.50 4.87 6.56

1684 .03 .06 .10 .20 .60 1.40 2.73 5.40 6.44 6729 .03 .04 .10 .20 .65 1.47 2.61 4.96 5.99

1688 .02 .03 .06 .20 .66 1.32 2.64 5.62 5.79 6740 .02 .03 .09 .12 .31 .80 1.60 3.31 4.38

1750 .04 .05 .10 .20 .60 1.40 2.50 4.49 5.70 6760 .04 .05 .09 .20 .54 1.29 2.35 4.50 5.72

1855 -- -- .09 .52 1.46 3.11 8.52 -- -- 6859 .03 .04 .10 .20 .62 1.50 2.80 5.10 6.27

1891 -- -- -- -- 2.05 -- -- -- -- 6926 -- -- -- .74 2.33 6.59 -- -- --

1900 .02 .02 .07 .17 .60 1.36 2.53 4.87 5.73 6935 .04 .05 .10 .20 .60 1.43 2.66 5.50 6.53

1902 .10 .10 .10 .30 .70 1.80 3.24 6.60 7.64 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- .13 .63 .80 2.98 4.21 -- -- 6944 .04 .05 .10 .20 .60 1.41 2.70 5.00 6.01

1954 -- -- .24 .44 1.42 3.22 8.61 -- -- 7080 .03 .03 .10 .28 .75 1.71 3.11 5.65 6.79

2145 .03 .03 .07 .28 .63 1.38 2.32 3.88 6.05 7196 .03 .04 .10 .20 .60 1.32 2.50 4.81 5.72

2242 -- -- -- 1.71 3.06 5.18 -- -- -- 7201 .02 .02 .06 .15 .46 1.04 2.44 5.93 7.91

2309 .03 .03 .07 .17 .70 1.41 3.19 6.67 7.56 7309 .10 .10 .10 .30 .70 1.70 3.00 5.61 6.95

2334 .10 .10 .10 .20 .50 1.30 2.40 5.29 6.50 7358 .02 .03 .08 .20 .60 1.49 2.86 4.96 6.59

2500 -- -- -- 1.26 3.24 5.17 -- -- -- 7372 -- -- .12 .54 1.31 3.21 6.40 -- --

2654 .10 .10 .10 .30 .70 1.50 2.88 5.88 6.80 7412 .03 .03 .10 .10 .35 .88 1.77 3.20 4.08

2665 .02 .03 .07 .17 .55 1.27 2.45 4.75 5.88 7556 .10 .10 .10 .20 .50 1.68 2.90 5.57 5.81

2678 -- -- -- .42 .78 3.73 -- -- -- 7588 .02 .03 .06 .15 .46 1.13 2.30 4.98 5.51

2849 .03 .04 .10 .20 .50 1.10 2.30 5.02 6.91 7660 .04 .05 .10 .18 .40 .95 1.85 3.70 4.46

2852 .10 .10 .10 .10 .40 1.10 2.34 4.51 5.37 7675 .10 .10 .10 .30 .70 1.60 2.60 4.89 6.83

2994 .02 .03 .07 .21 .65 1.50 2.90 6.10 6.87 7705 .05 .06 .10 .22 .70 1.48 2.79 5.40 6.67

2997 .02 .02 .08 .18 .63 1.75 3.06 5.87 8.38 7714 .02 .03 .06 .15 .45 1.07 2.18 4.39 4.94

3002 .02 .03 .07 .10 .30 .80 1.47 2.88 3.42 7732 .03 .04 .09 .25 .69 1.45 2.62 4.98 6.13

3281 .02 .03 .10 .19 .52 1.25 2.44 4.90 6.19 7739 .10 .10 .10 .30 .80 1.70 3.20 6.05 7.30

3286 .03 .04 .10 .24 .70 1.57 2.89 5.82 7.20 8029 .02 .03 .09 .18 .43 1.10 2.10 4.19 4.72

3304 .02 .03 .07 .13 .40 1.00 1.94 3.62 4.62 8092 -- -- -- -- .50 -- -- -- --

3353 -- -- -- .75 2.14 3.06 -- -- -- 8101 .03 .04 .10 .15 .42 1.10 2.11 3.66 4.70

3407 .01 .01 .02 .09 .34 1.06 2.03 5.98 6.56 8290 .04 .05 .10 .20 .65 1.49 2.70 5.92 6.67

3497 .03 .04 .10 .20 .50 1.20 2.40 5.10 6.85 8420 .03 .04 .10 .28 .72 1.47 2.57 4.61 6.09

3628 .02 .03 .07 .10 .31 .85 1.61 3.11 3.70 8470 -- -- .16 .54 .87 1.75 3.23 -- --

3700 .03 .03 .09 .21 .62 1.43 2.59 5.79 7.13 8497 .04 .05 .10 .30 .78 1.70 3.10 5.89 6.77

3740 .02 .03 .08 .18 .49 1.20 2.40 4.37 5.66 8501 .02 .03 .10 .20 .60 1.40 2.70 5.51 6.67

3830 .03 .03 .07 .17 .57 1.09 2.28 4.97 6.23 8504 .10 .10 .10 .20 .50 1.10 2.40 5.04 7.64

3835 -- .01 .08 .20 .63 1.54 2.67 5.04 -- 8708 .10 .10 .10 .20 .50 1.20 2.50 5.10 6.09

4001 -- -- -- 1.48 2.27 2.90 -- -- -- 8769 .02 .03 .09 .22 .66 1.51 2.80 5.48 6.73

4008 -- -- .05 .15 .80 1.42 1.98 -- -- 8879 .02 .03 .05 .15 .38 1.11 2.16 3.83 5.29

4010 .03 .04 .08 .20 .61 1.40 2.87 5.43 6.42 8884 -- -- -- -- 1.14 -- -- -- --

4051 .03 .04 .09 .20 .52 1.40 2.51 4.67 5.90 8992 .01 .01 .03 .15 .56 1.43 2.71 5.48 7.55

4052 .10 .10 .10 .20 .70 1.60 3.20 6.10 6.91 9014 -- -- .19 .34 .84 1.66 2.57 -- --

4098 .03 .04 .10 .23 .60 1.38 2.60 5.25 6.70 9023 .02 .03 .10 .26 .77 1.74 3.15 6.14 7.75

4202 .04 .06 .10 .20 .50 1.22 2.40 4.69 6.09 9247 -- -- -- .55 1.83 4.17 -- -- --

4204 .01 .02 .06 .20 .39 .99 1.78 5.40 6.04 9278 -- -- -- .65 1.41 2.06 -- -- --

4384 .03 .05 .10 .28 .80 1.70 3.21 5.84 7.35 9300 -- -- .04 .26 .91 6.65 11.90 -- --

4386 .02 .04 .10 .24 .80 1.60 3.10 5.49 6.62 9364 -- -- .15 .20 2.19 3.18 4.34 -- --

4388 -- .06 .08 .20 .40 1.41 3.83 7.22 -- 9404 .02 .03 .09 .17 .48 1.17 2.25 4.08 5.27

4393 .02 .03 .09 .20 .60 1.32 2.54 5.25 6.63 9450 .10 .10 .10 .30 .80 1.60 3.17 5.70 7.21

4506 .03 .03 .10 .25 .70 1.57 2.69 5.07 6.01 9503 .03 .04 .07 .19 .53 1.22 2.38 6.29 7.10

4692 .02 .02 .05 .18 .60 1.29 2.32 4.87 5.86 9629 .02 .03 .08 .19 .54 1.36 2.55 4.85 5.84

4812 .03 .03 .10 .20 .62 1.43 2.57 4.97 6.26 9719 .03 .04 .10 .32 .75 1.62 2.72 5.12 6.43

4865 .02 .03 .10 .20 .61 1.55 2.88 5.54 6.71 9724 .10 .10 .10 .30 .70 1.80 3.23 5.89 7.04

4969 .03 .03 .05 .16 .46 1.09 2.37 5.42 6.89 9748 .10 .10 .10 .30 .80 1.60 3.27 5.57 6.52

4975 .03 .05 .10 .30 .80 1.71 3.20 5.69 7.09 9762 .02 .02 .05 .13 .40 .95 1.90 3.44 4.36

4978 .03 .04 .10 .20 .60 1.40 2.60 5.20 6.56
Appendix 3 163

Appendix 3–5.1. Empirical distribution of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 1.00 2.00 5.00 10.00 14.80 -- -- 5063 -- -- 1.00 2.75 5.00 16.25 18.50 -- --

0026 1.00 1.00 1.00 2.00 4.00 8.00 14.00 24.00 26.56 5068 1.00 1.00 1.00 1.00 3.00 8.00 11.60 22.32 25.64

0179 1.00 1.00 1.00 1.00 2.00 5.00 9.00 17.00 20.16 5108 1.00 1.00 1.00 2.00 4.00 8.00 15.00 27.00 32.00

0188 1.00 1.00 1.00 2.00 3.00 7.00 11.00 22.94 29.94 5329 -- -- 2.00 2.50 5.00 10.00 21.20 -- --

0215 1.00 1.00 1.00 2.00 4.00 8.00 13.00 24.00 30.74 5463 1.00 1.00 1.00 1.00 1.00 5.00 9.00 19.00 23.00

0242 1.00 1.00 1.00 2.00 3.00 7.00 12.00 25.00 30.00 5581 -- -- 1.00 3.00 7.50 13.75 22.10 -- --

0256 1.00 1.00 1.00 1.00 3.00 7.00 12.00 22.00 25.00 5582 1.00 1.00 1.00 2.00 4.00 8.00 13.60 26.00 35.16

0260 -- -- 1.00 1.00 5.00 12.75 21.40 -- -- 5589 1.00 1.00 1.00 1.00 2.00 5.00 10.00 18.56 24.00

0292 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 24.00 5648 1.00 1.00 1.00 1.00 2.00 5.00 10.00 19.00 24.00

0293 1.00 1.00 1.00 1.00 2.00 6.00 10.00 20.00 25.00 5662 1.00 1.00 1.00 2.00 4.00 9.00 15.00 26.68 31.00

0296 1.00 1.00 1.00 2.00 4.00 8.00 14.00 26.00 31.20 5664 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.26 28.00

0535 1.00 1.00 1.00 1.00 2.00 6.00 10.00 19.00 24.00 6130 1.00 1.00 1.00 1.00 3.00 8.00 13.00 26.00 30.00

0537 1.00 1.00 1.00 1.00 2.00 5.00 9.00 22.62 24.31 6328 1.00 1.00 1.00 2.00 4.00 8.00 13.00 25.00 34.00

0670 1.00 1.00 1.00 1.00 3.00 7.00 13.00 22.00 26.78 6391 -- -- 1.00 2.00 3.00 5.00 8.60 -- --

0814 1.00 1.00 1.00 1.00 1.00 1.00 2.00 11.58 25.43 6485 1.00 1.00 1.00 1.00 3.00 7.00 13.00 23.00 28.00

0908 1.00 1.00 1.00 1.00 2.00 4.00 9.00 21.00 22.63 6612 -- -- 1.00 1.00 1.00 7.50 10.80 -- --

0912 1.00 1.00 1.00 2.00 3.00 7.00 10.00 18.00 22.00 6616 1.00 1.00 1.00 1.00 3.00 6.00 11.00 19.46 25.00

1148 -- -- 1.00 3.00 6.00 11.00 20.40 -- -- 6620 1.00 1.00 1.00 1.00 2.00 5.00 11.00 21.26 25.13

1168 1.00 1.00 1.00 2.00 4.00 8.00 15.00 27.00 33.00 6627 1.00 1.00 1.00 1.00 3.00 6.00 12.00 21.00 25.00

1391 -- -- 1.00 3.00 5.00 10.00 15.40 -- -- 6638 1.00 1.00 1.00 1.00 3.00 7.00 12.00 24.00 27.00

1436 1.00 1.00 1.00 2.00 5.00 9.00 15.00 28.00 32.35 6643 1.00 1.00 1.00 2.00 4.00 8.00 14.10 26.64 28.00

1437 1.00 1.00 1.00 1.00 2.00 6.00 10.00 20.00 24.42 6656 1.00 1.00 1.00 2.00 3.00 7.00 12.00 28.28 37.16

1544 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 29.00 6661 1.00 1.00 1.00 2.00 4.00 8.00 14.00 27.00 31.00

1684 1.00 1.00 1.00 1.00 3.00 6.00 11.00 20.00 27.00 6729 1.00 1.00 1.00 2.00 3.00 8.00 13.00 23.96 28.00

1688 1.00 1.00 1.00 2.00 4.00 8.00 14.00 23.06 27.12 6740 1.00 1.00 1.00 1.00 2.00 5.00 9.00 17.00 20.00

1750 1.00 1.00 1.00 1.00 2.00 5.00 10.00 18.00 23.56 6760 1.00 1.00 1.00 1.00 3.00 8.00 13.00 23.30 27.15

1855 -- -- 1.00 3.00 5.00 10.00 13.00 -- -- 6859 1.00 1.00 1.00 1.00 3.00 7.00 12.00 22.00 27.00

1891 -- -- -- 1.50 2.00 7.50 -- -- -- 6926 -- -- 2.00 2.00 5.00 9.00 12.00 -- --

1900 1.00 1.00 1.00 2.00 4.00 8.00 14.00 24.00 28.00 6935 1.00 1.00 1.00 1.00 3.00 6.00 11.00 22.00 26.00

1902 1.00 1.00 1.00 1.00 2.00 6.00 10.10 20.00 25.22 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- 2.00 3.00 5.00 9.00 18.50 -- -- 6944 1.00 1.00 1.00 1.00 3.00 7.00 12.00 21.00 26.00

1954 -- -- 2.00 2.00 4.00 10.00 14.00 -- -- 7080 1.00 1.00 1.00 1.00 3.00 8.00 14.00 26.00 32.00

2145 1.00 1.00 1.00 1.00 4.00 7.00 12.00 23.00 26.96 7196 1.00 1.00 1.00 1.00 3.00 6.50 12.00 22.00 28.00

2242 -- -- 2.00 2.00 5.00 10.00 19.80 -- -- 7201 1.00 1.00 1.00 1.00 4.00 8.00 12.00 23.70 26.85

2309 1.00 1.00 1.00 2.00 4.00 7.25 13.00 21.00 23.14 7309 1.00 1.00 1.00 1.00 2.00 6.00 11.00 18.00 23.00

2334 1.00 1.00 1.00 1.00 2.00 5.00 9.00 19.00 23.00 7358 1.00 1.00 1.00 2.00 4.00 8.00 15.00 26.00 31.00

2500 -- -- 1.30 2.75 6.50 10.25 22.80 -- -- 7372 -- -- 2.00 3.00 6.00 10.50 15.20 -- --

2654 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.00 22.00 7412 1.00 1.00 1.00 1.00 2.00 5.00 9.00 17.00 22.00

2665 1.00 1.00 1.00 2.00 4.00 7.00 12.00 22.90 25.00 7556 1.00 1.00 1.00 1.00 1.50 5.00 9.90 22.00 24.98

2678 -- -- 1.30 2.00 5.00 9.00 13.70 -- -- 7588 1.00 1.00 1.00 1.50 3.00 7.00 13.00 22.00 31.22

2849 1.00 1.00 1.00 1.00 2.00 6.00 10.00 20.00 23.00 7660 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.00 24.00

2852 1.00 1.00 1.00 1.00 1.00 5.00 9.00 17.00 21.68 7675 1.00 1.00 1.00 1.00 2.00 6.00 10.00 18.00 23.00

2994 1.00 1.00 1.00 2.00 4.00 7.00 13.00 23.00 27.00 7705 1.00 1.00 1.00 1.00 3.00 6.00 11.00 21.78 25.00

2997 1.00 1.00 1.00 2.00 4.00 9.00 14.60 26.12 30.12 7714 1.00 1.00 1.00 2.00 3.00 7.00 12.00 23.00 31.00

3002 1.00 1.00 1.00 1.00 2.00 5.00 10.00 19.00 23.00 7732 1.00 1.00 1.00 2.00 4.00 8.00 14.00 26.00 31.00

3281 1.00 1.00 1.00 1.00 3.00 6.00 11.00 22.00 27.00 7739 1.00 1.00 1.00 1.00 3.00 6.00 11.00 19.48 24.00

3286 1.00 1.00 1.00 1.00 3.00 7.00 12.00 23.00 27.88 8029 1.00 1.00 1.00 1.00 3.00 7.00 11.00 21.00 24.00

3304 1.00 1.00 1.00 1.00 3.00 6.00 11.00 22.10 28.00 8092 -- -- -- 2.25 6.50 13.75 -- -- --

3353 -- -- 2.00 3.00 6.00 11.00 29.20 -- -- 8101 1.00 1.00 1.00 1.00 2.00 5.00 9.00 20.00 24.64

3407 1.00 1.00 1.00 1.00 2.00 7.00 13.00 30.00 31.38 8290 1.00 1.00 1.00 1.00 3.00 7.00 12.00 21.54 27.00

3497 1.00 1.00 1.00 1.00 2.00 6.00 11.00 20.00 25.00 8420 1.00 1.00 1.00 2.00 4.00 8.00 13.00 25.00 30.40

3628 1.00 1.00 1.00 1.00 2.00 5.00 10.00 18.84 24.00 8470 -- 1.00 1.00 2.00 4.00 7.00 13.60 25.12 --

3700 1.00 1.00 1.00 2.00 4.00 8.00 13.00 24.00 29.00 8497 1.00 1.00 1.00 1.00 3.00 7.00 12.00 23.00 27.00

3740 1.00 1.00 1.00 1.00 3.00 7.00 11.00 22.00 26.00 8501 1.00 1.00 1.00 1.00 3.00 6.00 11.00 21.00 25.79

3830 1.00 1.00 1.00 2.00 4.00 7.25 12.70 23.00 27.00 8504 1.00 1.00 1.00 1.00 2.00 4.00 7.00 15.00 18.00

3835 1.00 1.00 1.00 1.00 1.00 7.00 13.00 19.00 35.32 8708 1.00 1.00 1.00 1.00 2.00 5.00 10.00 18.00 22.00

4001 -- -- 1.00 1.00 3.00 5.00 5.90 -- -- 8769 1.00 1.00 1.00 1.00 4.00 8.00 13.00 23.00 28.00

4008 -- 1.00 1.00 2.75 5.50 12.00 19.90 34.00 -- 8879 1.00 1.00 1.00 2.00 3.50 7.00 10.00 18.34 24.00

4010 1.00 1.00 1.00 2.00 5.00 9.00 15.00 26.64 30.00 8884 -- -- 1.30 4.75 6.00 11.50 25.90 -- --

4051 1.00 1.00 1.00 1.00 3.00 7.00 12.00 25.46 30.23 8992 1.00 1.00 1.00 2.00 4.00 8.00 15.00 28.00 31.00

4052 1.00 1.00 1.00 1.00 2.00 6.00 10.00 20.00 24.00 9014 -- 1.00 1.00 1.00 2.00 6.00 11.00 18.80 --

4098 1.00 1.00 1.00 1.00 4.00 8.00 13.00 23.00 27.00 9023 1.00 1.00 1.00 2.00 4.00 9.00 15.00 27.00 32.00

4202 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.00 23.00 9247 -- -- 1.50 3.00 5.00 12.00 19.00 -- --

4204 1.00 1.00 1.00 2.00 3.00 6.00 10.00 19.00 27.75 9278 -- -- 1.90 3.25 7.00 10.50 16.10 -- --

4384 1.00 1.00 1.00 1.00 3.00 8.00 13.00 26.00 31.19 9300 -- -- 1.20 2.00 4.00 11.00 21.00 -- --

4386 1.00 1.00 1.00 2.00 4.00 8.00 14.00 26.94 31.00 9364 -- -- 1.40 3.00 4.00 9.50 16.60 -- --

4388 1.00 1.00 1.00 2.00 3.00 7.00 13.00 21.00 27.00 9404 1.00 1.00 1.00 1.00 3.00 7.00 12.00 22.00 27.60

4393 1.00 1.00 1.00 1.00 3.00 7.00 12.00 23.00 27.09 9450 1.00 1.00 1.00 1.00 2.00 6.00 11.00 18.98 22.00

4506 1.00 1.00 1.00 1.00 3.00 8.00 13.70 25.00 29.54 9503 1.00 1.00 1.00 2.00 5.00 9.00 15.00 27.00 31.01

4692 1.00 1.00 1.00 2.00 4.00 9.00 14.00 25.00 33.80 9629 1.00 1.00 1.00 1.00 3.00 7.00 12.00 23.00 29.00

4812 1.00 1.00 1.00 1.00 3.00 7.00 13.00 23.00 26.00 9719 1.00 1.00 1.00 1.00 4.00 8.00 14.00 25.00 30.84

4865 1.00 1.00 1.00 1.00 4.00 8.00 13.00 25.00 31.17 9724 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 25.11

4969 1.00 1.00 1.00 1.00 2.00 6.75 13.30 28.12 33.00 9748 1.00 1.00 1.00 1.00 2.00 6.00 11.00 20.00 23.00

4975 1.00 1.00 1.00 1.00 3.00 7.00 12.00 21.26 26.63 9762 1.00 1.00 1.00 2.00 3.00 7.00 12.00 21.00 27.72

4978 1.00 1.00 1.00 1.00 2.00 6.00 10.00 20.14 27.00
164 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–5.2. Empirical distribution of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 1.00 2.00 6.50 10.00 20.00 -- -- 5063 -- -- 1.00 2.75 5.00 16.25 18.50 -- --

0026 1.00 1.00 1.00 2.00 4.00 9.00 16.00 29.00 35.20 5068 1.00 1.00 1.00 2.00 4.00 9.00 12.20 23.00 25.88

0179 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 25.16 5108 1.00 1.00 1.00 2.00 4.00 9.00 17.00 30.00 35.00

0188 1.00 1.00 1.00 2.00 3.00 8.00 13.00 25.00 34.42 5329 -- -- 2.00 3.00 5.00 10.50 26.50 -- --

0215 1.00 1.00 1.00 2.00 4.00 9.00 15.00 27.00 33.00 5463 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.50 27.00

0242 1.00 1.00 1.00 2.00 4.00 8.00 13.00 27.12 36.56 5581 -- -- 1.20 3.00 8.00 14.00 23.00 -- --

0256 1.00 1.00 1.00 1.00 3.00 8.00 14.00 25.00 31.00 5582 1.00 1.00 1.00 2.00 4.00 8.00 15.00 29.44 40.00

0260 -- -- 1.00 1.00 7.00 13.00 22.90 -- -- 5589 1.00 1.00 1.00 1.00 2.00 6.00 12.00 24.00 28.00

0292 1.00 1.00 1.00 1.00 2.00 7.00 13.00 24.00 28.00 5648 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.00 27.00

0293 1.00 1.00 1.00 1.00 2.00 6.00 12.00 23.00 26.00 5662 1.00 1.00 1.00 2.00 5.00 10.00 18.00 31.62 38.31

0296 1.00 1.00 1.00 2.00 4.00 9.00 16.30 31.00 34.52 5664 1.00 1.00 1.00 1.00 2.00 7.00 14.00 25.02 30.51

0535 1.00 1.00 1.00 1.00 2.00 6.00 12.00 24.36 30.00 6130 1.00 1.00 1.00 2.00 4.00 9.00 15.00 29.00 34.00

0537 1.00 1.00 1.00 1.00 2.00 6.00 12.00 24.00 25.54 6328 1.00 1.00 1.00 2.00 4.00 8.00 14.00 30.00 38.92

0670 1.00 1.00 1.00 1.00 3.00 8.00 14.00 26.00 31.00 6391 -- -- 1.00 2.00 3.00 7.00 11.00 -- --

0814 1.00 1.00 1.00 1.00 1.00 1.00 2.20 13.24 26.15 6485 1.00 1.00 1.00 1.00 3.00 8.00 15.00 27.00 32.00

0908 1.00 1.00 1.00 1.00 2.00 5.00 11.00 21.00 23.08 6612 -- -- 1.00 1.00 2.00 9.00 15.00 -- --

0912 1.00 1.00 1.00 2.00 3.00 7.00 12.00 22.88 26.00 6616 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 28.00

1148 -- -- 1.00 3.00 6.00 11.00 20.40 -- -- 6620 1.00 1.00 1.00 1.00 2.00 7.00 12.00 25.00 29.00

1168 1.00 1.00 1.00 2.00 4.00 10.00 17.00 31.00 36.00 6627 1.00 1.00 1.00 1.00 3.00 8.00 14.00 26.00 29.48

1391 -- -- 1.00 3.00 5.00 14.00 17.80 -- -- 6638 1.00 1.00 1.00 1.00 3.00 8.00 14.00 27.00 32.03

1436 1.00 1.00 1.00 2.00 5.00 10.00 16.30 31.00 37.13 6643 1.00 1.00 1.00 2.00 4.00 8.00 15.60 29.84 36.84

1437 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 30.00 6656 1.00 1.00 1.00 2.00 4.00 8.00 15.80 31.96 38.00

1544 1.00 1.00 1.00 1.00 3.00 8.00 15.00 28.66 33.00 6661 1.00 1.00 1.00 2.00 4.00 9.00 16.00 30.00 37.00

1684 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 29.00 6729 1.00 1.00 1.00 2.00 4.00 9.00 15.00 27.00 32.00

1688 1.00 1.00 1.00 1.75 4.00 9.00 16.70 26.34 27.68 6740 1.00 1.00 1.00 1.00 2.00 5.00 10.30 20.00 24.86

1750 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 29.00 6760 1.00 1.00 1.00 2.00 4.00 8.00 15.00 26.58 35.58

1855 -- -- 2.00 4.00 5.00 11.00 16.00 -- -- 6859 1.00 1.00 1.00 1.00 3.00 8.00 14.00 27.00 33.00

1891 -- -- -- 1.50 2.00 10.50 -- -- -- 6926 -- -- 2.00 2.50 6.00 10.50 19.20 -- --

1900 1.00 1.00 1.00 2.00 4.00 9.00 15.70 27.00 32.00 6935 1.00 1.00 1.00 1.00 3.00 8.00 14.00 26.70 30.85

1902 1.00 1.00 1.00 1.00 2.00 7.00 13.00 27.00 30.00 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- 1.90 3.00 5.00 9.00 21.30 -- -- 6944 1.00 1.00 1.00 1.00 3.00 8.00 14.00 25.20 30.10

1954 -- -- 2.00 2.25 5.00 10.75 15.20 -- -- 7080 1.00 1.00 1.00 1.00 4.00 9.00 16.00 29.00 35.00

2145 1.00 1.00 1.00 2.00 4.00 8.00 14.50 27.80 30.90 7196 1.00 1.00 1.00 1.00 3.00 7.00 14.00 26.00 31.32

2242 -- -- 2.00 3.00 6.00 12.50 23.00 -- -- 7201 1.00 1.00 1.00 1.00 4.00 9.00 14.00 26.00 32.00

2309 1.00 1.00 1.00 2.00 4.00 9.00 17.00 23.46 24.73 7309 1.00 1.00 1.00 1.00 3.00 7.00 13.00 23.00 28.34

2334 1.00 1.00 1.00 1.00 2.00 6.00 11.10 21.82 25.91 7358 1.00 1.00 1.00 2.00 4.00 10.00 16.00 29.00 32.28

2500 -- -- 1.20 3.00 7.00 11.50 23.20 -- -- 7372 -- -- 2.00 4.00 8.50 12.00 21.90 -- --

2654 1.00 1.00 1.00 1.00 2.00 6.00 12.00 22.00 26.52 7412 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 26.00

2665 1.00 1.00 1.00 2.00 4.00 8.00 14.00 26.00 32.00 7556 1.00 1.00 1.00 1.00 2.00 6.00 12.00 29.40 35.90

2678 -- -- 2.00 3.00 6.00 9.00 13.80 -- -- 7588 1.00 1.00 1.00 2.00 3.00 7.00 14.00 26.04 34.02

2849 1.00 1.00 1.00 1.00 3.00 7.00 12.00 23.00 29.00 7660 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.00 28.00

2852 1.00 1.00 1.00 1.00 2.00 6.00 12.00 24.40 25.40 7675 1.00 1.00 1.00 1.00 3.00 7.00 12.00 23.00 26.00

2994 1.00 1.00 1.00 2.00 4.00 8.00 15.00 27.00 34.43 7705 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 30.00

2997 1.00 1.00 1.00 2.00 4.00 10.00 15.00 27.36 30.36 7714 1.00 1.00 1.00 2.00 3.00 8.00 14.00 25.00 36.50

3002 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.86 26.00 7732 1.00 1.00 1.00 2.00 4.00 9.00 16.00 29.00 34.00

3281 1.00 1.00 1.00 1.00 3.00 7.00 14.00 26.00 32.40 7739 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 27.36

3286 1.00 1.00 1.00 1.00 3.00 8.00 14.00 27.00 31.70 8029 1.00 1.00 1.00 1.00 3.00 7.00 13.00 23.00 32.36

3304 1.00 1.00 1.00 1.00 3.00 7.00 13.00 26.00 30.30 8092 -- -- -- 2.25 6.50 13.75 -- -- --

3353 -- -- 2.00 3.00 6.50 17.00 49.80 -- -- 8101 1.00 1.00 1.00 1.00 2.00 6.00 11.00 24.00 28.00

3407 1.00 1.00 1.00 1.00 3.00 7.00 14.00 31.52 36.04 8290 1.00 1.00 1.00 1.00 3.00 8.00 13.00 25.00 30.29

3497 1.00 1.00 1.00 1.00 3.00 7.00 13.00 26.00 32.64 8420 1.00 1.00 1.00 2.00 4.00 9.00 15.00 26.88 34.00

3628 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.00 27.00 8470 -- 1.00 1.00 2.00 4.00 9.00 16.00 31.52 --

3700 1.00 1.00 1.00 2.00 4.00 9.00 15.00 27.00 33.00 8497 1.00 1.00 1.00 1.00 3.00 8.00 15.00 26.00 32.00

3740 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.52 30.00 8501 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 29.00

3830 1.00 1.00 1.00 2.00 4.00 8.00 15.00 27.00 39.08 8504 1.00 1.00 1.00 1.00 2.00 5.00 10.00 17.88 19.97

3835 1.00 1.00 1.00 1.00 1.00 7.00 13.00 19.00 35.80 8708 1.00 1.00 1.00 1.00 2.00 6.00 11.10 22.00 26.00

4001 -- -- -- 1.00 3.00 5.50 -- -- -- 8769 1.00 1.00 1.00 2.00 4.00 9.00 15.00 28.00 33.00

4008 -- -- 1.00 4.00 7.00 14.00 22.00 -- -- 8879 1.00 1.00 1.00 2.00 4.00 8.00 12.00 19.64 24.00

4010 1.00 1.00 1.00 2.00 5.00 10.00 17.00 30.00 38.00 8884 -- -- 1.30 4.75 6.00 11.50 25.90 -- --

4051 1.00 1.00 1.00 1.00 3.00 7.00 14.00 27.00 33.07 8992 1.00 1.00 1.00 2.00 4.00 10.00 17.00 30.00 36.00

4052 1.00 1.00 1.00 1.00 2.00 7.00 13.00 24.00 29.41 9014 -- 1.00 1.00 1.00 2.00 7.00 12.20 18.92 --

4098 1.00 1.00 1.00 2.00 4.00 9.00 15.00 27.00 31.00 9023 1.00 1.00 1.00 2.00 5.00 10.00 17.00 31.00 38.01

4202 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.24 27.00 9247 -- -- 2.00 3.00 5.00 12.00 25.80 -- --

4204 1.00 1.00 1.00 2.00 4.00 7.00 13.00 30.00 34.46 9278 -- -- 1.60 4.50 7.00 13.00 17.80 -- --

4384 1.00 1.00 1.00 1.00 4.00 9.00 16.00 29.00 36.00 9300 -- -- 1.00 2.00 5.00 13.00 23.60 -- --

4386 1.00 1.00 1.00 2.00 4.00 9.00 16.00 29.24 35.62 9364 -- -- 1.20 3.00 4.00 11.00 16.80 -- --

4388 1.00 1.00 1.00 2.00 3.50 9.00 14.00 24.04 37.28 9404 1.00 1.00 1.00 1.00 3.00 8.00 14.00 27.00 33.10

4393 1.00 1.00 1.00 1.00 4.00 8.00 14.00 26.00 30.00 9450 1.00 1.00 1.00 1.00 3.00 7.00 12.00 22.00 25.00

4506 1.00 1.00 1.00 1.00 4.00 9.00 15.00 28.00 33.28 9503 1.00 1.00 1.00 2.00 5.00 10.00 17.00 30.00 35.70

4692 1.00 1.00 1.00 2.00 4.00 9.00 15.00 27.00 35.00 9629 1.00 1.00 1.00 1.00 3.00 8.00 15.00 28.00 34.00

4812 1.00 1.00 1.00 2.00 4.00 8.00 14.00 25.56 29.78 9719 1.00 1.00 1.00 2.00 4.00 9.00 15.80 30.00 33.98

4865 1.00 1.00 1.00 2.00 4.00 9.00 16.00 29.46 37.00 9724 1.00 1.00 1.00 1.00 3.00 7.00 14.00 25.66 30.83

4969 1.00 1.00 1.00 1.00 3.00 7.00 14.50 28.60 33.00 9748 1.00 1.00 1.00 1.00 2.00 7.00 13.00 22.00 25.38

4975 1.00 1.00 1.00 1.00 3.00 8.00 14.00 25.00 30.00 9762 1.00 1.00 1.00 2.00 3.00 8.00 13.00 25.00 32.34

4978 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 30.00
Appendix 3 165

Appendix 3–5.3. Empirical distribution of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 1.00 2.00 8.00 18.00 33.00 -- -- 5063 -- -- 1.30 3.50 10.00 18.50 24.60 -- --

0026 1.00 1.00 1.00 2.00 5.00 11.00 19.00 36.00 41.01 5068 1.00 1.00 1.00 2.00 5.00 11.00 18.00 34.70 60.95

0179 1.00 1.00 1.00 1.00 2.00 8.00 16.00 29.00 33.00 5108 1.00 1.00 1.00 2.00 5.00 11.00 21.00 38.00 47.00

0188 1.00 1.00 1.00 2.00 4.00 9.00 17.70 36.34 47.51 5329 -- -- 2.00 3.00 6.00 14.50 31.60 -- --

0215 1.00 1.00 1.00 2.00 4.00 10.00 18.00 33.00 41.00 5463 1.00 1.00 1.00 1.00 2.00 8.00 16.00 30.00 36.22

0242 1.00 1.00 1.00 2.00 4.00 9.00 17.00 36.84 49.00 5581 -- -- 1.80 3.00 9.00 18.00 24.20 -- --

0256 1.00 1.00 1.00 1.00 4.00 9.00 18.00 33.92 41.00 5582 1.00 1.00 1.00 2.00 4.00 9.00 19.00 37.68 44.60

0260 -- -- 1.00 1.00 6.00 18.25 35.10 -- -- 5589 1.00 1.00 1.00 1.00 3.00 8.00 16.00 30.00 34.18

0292 1.00 1.00 1.00 1.00 3.00 9.00 17.00 31.00 36.48 5648 1.00 1.00 1.00 1.00 3.00 8.00 15.00 27.00 32.88

0293 1.00 1.00 1.00 1.00 3.00 8.00 15.00 28.00 33.00 5662 1.00 1.00 1.00 2.00 5.00 12.00 22.00 40.56 45.76

0296 1.00 1.00 1.00 2.00 5.00 11.00 21.00 40.32 48.44 5664 1.00 1.00 1.00 1.00 3.00 9.00 18.00 33.30 40.00

0535 1.00 1.00 1.00 1.00 2.50 8.00 18.00 31.00 36.11 6130 1.00 1.00 1.00 2.00 5.00 11.00 20.00 36.00 43.00

0537 1.00 1.00 1.00 1.00 3.00 8.00 15.00 26.00 32.79 6328 1.00 1.00 1.00 2.00 4.00 11.00 18.00 39.84 43.96

0670 1.00 1.00 1.00 1.00 4.00 10.00 18.00 35.00 41.00 6391 -- -- 1.00 2.00 3.00 7.00 14.30 -- --

0814 1.00 1.00 1.00 1.00 1.00 1.00 3.00 28.40 29.00 6485 1.00 1.00 1.00 1.00 4.00 11.00 19.00 33.00 39.00

0908 1.00 1.00 1.00 1.00 2.00 6.00 14.00 28.00 35.00 6612 -- -- 1.00 1.00 4.00 12.00 18.20 -- --

0912 1.00 1.00 1.00 2.00 3.00 8.00 13.00 25.52 34.26 6616 1.00 1.00 1.00 1.00 3.00 9.00 16.00 29.00 37.00

1148 -- -- 1.00 3.50 8.00 14.50 32.20 -- -- 6620 1.00 1.00 1.00 1.00 3.00 9.00 17.00 31.12 37.00

1168 1.00 1.00 1.00 2.00 5.00 12.00 22.00 36.00 41.60 6627 1.00 1.00 1.00 1.00 3.50 10.00 17.00 32.46 39.00

1391 -- -- 1.00 3.00 5.50 15.00 26.20 -- -- 6638 1.00 1.00 1.00 1.00 4.00 10.00 19.00 33.00 40.00

1436 1.00 1.00 1.00 2.00 5.00 11.50 21.00 37.00 46.00 6643 1.00 1.00 1.00 2.00 5.00 12.50 23.20 37.88 49.22

1437 1.00 1.00 1.00 1.00 3.00 10.00 17.00 33.00 39.00 6656 1.00 1.00 1.00 2.00 4.00 11.00 19.00 39.60 47.80

1544 1.00 1.00 1.00 1.00 4.00 11.00 20.00 36.00 42.00 6661 1.00 1.00 1.00 2.00 5.00 12.00 21.00 39.00 47.00

1684 1.00 1.00 1.00 1.00 3.00 9.00 17.00 32.22 38.00 6729 1.00 1.00 1.00 2.00 4.00 10.00 19.00 32.00 37.00

1688 1.00 1.00 1.00 2.00 5.00 12.00 21.30 37.64 44.65 6740 1.00 1.00 1.00 1.00 3.00 6.00 13.00 25.88 33.00

1750 1.00 1.00 1.00 1.00 3.00 8.00 15.00 30.00 36.00 6760 1.00 1.00 1.00 2.00 4.00 9.00 17.00 36.14 46.00

1855 -- -- 2.00 5.00 12.50 23.25 32.40 -- -- 6859 1.00 1.00 1.00 1.00 4.00 10.00 18.00 33.00 40.02

1891 -- -- -- 1.25 2.00 23.75 -- -- -- 6926 -- -- 2.00 3.00 8.00 12.00 21.00 -- --

1900 1.00 1.00 1.00 2.00 5.00 11.00 19.00 35.00 42.00 6935 1.00 1.00 1.00 1.00 4.00 10.00 18.00 33.00 38.00

1902 1.00 1.00 1.00 1.00 3.00 9.50 18.00 30.56 36.78 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- 1.50 2.25 5.00 9.00 49.00 -- -- 6944 1.00 1.00 1.00 1.00 4.00 10.00 18.00 32.00 38.10

1954 -- -- 2.00 3.00 10.00 14.50 32.00 -- -- 7080 1.00 1.00 1.00 2.00 4.00 11.00 19.00 36.00 43.00

2145 1.00 1.00 1.00 1.00 4.00 9.50 19.00 32.00 40.86 7196 1.00 1.00 1.00 1.00 4.00 9.00 17.00 30.02 37.02

2242 -- -- 2.00 3.00 6.00 13.00 26.00 -- -- 7201 1.00 1.00 1.00 2.00 4.00 10.00 17.60 27.64 36.08

2309 1.00 1.00 1.00 2.00 4.00 11.00 20.00 26.80 33.40 7309 1.00 1.00 1.00 1.00 3.00 9.00 17.00 30.00 37.00

2334 1.00 1.00 1.00 1.00 2.00 8.00 15.00 29.00 34.93 7358 1.00 1.00 1.00 2.00 5.00 11.00 20.00 33.00 46.24

2500 -- -- 2.00 6.00 9.00 14.00 24.00 -- -- 7372 -- -- 2.00 3.75 9.00 18.75 39.00 -- --

2654 1.00 1.00 1.00 1.00 2.00 8.00 16.00 31.22 35.61 7412 1.00 1.00 1.00 1.00 3.00 7.00 14.00 29.00 39.00

2665 1.00 1.00 1.00 2.00 4.00 9.00 17.00 32.04 37.52 7556 1.00 1.00 1.00 1.00 2.00 8.00 15.00 36.00 40.81

2678 -- -- 1.90 3.50 6.50 15.25 25.10 -- -- 7588 1.00 1.00 1.00 2.00 3.00 8.00 18.00 36.44 50.58

2849 1.00 1.00 1.00 1.00 3.00 8.00 16.00 31.00 37.62 7660 1.00 1.00 1.00 1.00 3.00 7.00 14.00 30.00 36.00

2852 1.00 1.00 1.00 1.00 2.00 8.00 16.00 25.80 28.80 7675 1.00 1.00 1.00 1.00 3.00 9.25 16.00 30.00 35.41

2994 1.00 1.00 1.00 2.00 4.00 10.00 20.90 34.00 42.78 7705 1.00 1.00 1.00 1.00 3.00 9.00 18.00 32.00 41.00

2997 1.00 1.00 1.00 2.00 5.00 11.00 19.00 30.56 40.56 7714 1.00 1.00 1.00 2.00 4.00 10.00 18.00 38.20 51.10

3002 1.00 1.00 1.00 1.00 3.00 7.00 15.00 28.00 32.00 7732 1.00 1.00 1.00 2.00 4.00 11.00 20.00 34.44 43.00

3281 1.00 1.00 1.00 1.00 4.00 9.00 17.00 33.00 39.00 7739 1.00 1.00 1.00 1.00 3.00 9.00 16.00 30.00 36.79

3286 1.00 1.00 1.00 1.00 4.00 9.00 18.00 34.00 43.00 8029 1.00 1.00 1.00 1.00 3.00 8.00 15.00 33.04 45.00

3304 1.00 1.00 1.00 1.00 3.00 8.00 16.00 31.00 40.00 8092 -- -- -- 2.25 6.50 13.75 -- -- --

3353 -- -- 2.10 3.25 7.50 16.00 71.20 -- -- 8101 1.00 1.00 1.00 1.00 2.00 7.00 15.00 29.00 36.00

3407 1.00 1.00 1.00 1.00 5.00 12.00 19.00 43.42 47.68 8290 1.00 1.00 1.00 1.00 4.00 10.00 18.00 34.72 40.86

3497 1.00 1.00 1.00 1.00 3.00 9.00 17.00 33.68 43.68 8420 1.00 1.00 1.00 2.00 4.00 10.00 18.00 36.00 40.44

3628 1.00 1.00 1.00 1.00 3.00 7.00 15.00 29.00 38.00 8470 -- 1.00 1.00 2.00 4.00 11.00 19.60 31.68 --

3700 1.00 1.00 1.00 2.00 4.00 10.00 18.00 35.28 44.00 8497 1.00 1.00 1.00 1.00 4.00 11.00 18.00 35.00 42.00

3740 1.00 1.00 1.00 1.00 4.00 9.00 17.00 33.52 40.00 8501 1.00 1.00 1.00 1.00 3.00 9.00 17.00 29.00 35.37

3830 1.00 1.00 1.00 2.00 4.00 10.00 18.00 32.00 40.96 8504 1.00 1.00 1.00 1.00 2.00 7.00 15.00 25.00 36.68

3835 1.00 1.00 1.00 1.00 7.00 12.00 19.00 37.48 49.72 8708 1.00 1.00 1.00 1.00 2.00 8.00 16.00 29.00 35.00

4001 -- -- -- 1.50 4.50 10.50 -- -- -- 8769 1.00 1.00 1.00 2.00 4.00 10.00 19.00 34.00 43.00

4008 -- -- 1.00 4.00 9.00 16.25 27.70 -- -- 8879 1.00 1.00 1.00 2.00 4.00 9.00 16.00 29.44 43.32

4010 1.00 1.00 1.00 2.00 5.00 12.00 22.00 38.96 46.48 8884 -- -- -- 6.00 7.00 15.50 -- -- --

4051 1.00 1.00 1.00 2.00 4.00 10.00 17.30 34.46 40.00 8992 1.00 1.00 1.00 2.00 5.00 12.00 21.00 38.00 44.99

4052 1.00 1.00 1.00 1.00 3.00 8.00 17.00 30.46 36.00 9014 -- 1.00 1.00 2.00 3.00 7.00 13.50 27.00 --

4098 1.00 1.00 1.00 2.00 5.00 11.00 19.00 33.00 40.00 9023 1.00 1.00 1.00 2.00 5.00 12.00 22.00 41.00 47.00

4202 1.00 1.00 1.00 1.00 3.00 8.00 15.00 28.40 36.00 9247 -- -- 2.00 3.00 6.00 14.50 26.30 -- --

4204 1.00 1.00 1.00 2.00 4.00 8.00 15.00 40.40 50.00 9278 -- -- 1.80 5.00 9.00 16.00 20.80 -- --

4384 1.00 1.00 1.00 2.00 4.00 10.00 20.00 36.00 43.00 9300 -- -- 1.00 3.00 6.50 16.75 37.60 -- --

4386 1.00 1.00 1.00 2.00 5.00 11.00 20.00 36.00 41.00 9364 -- -- 1.90 3.00 4.50 13.25 26.70 -- --

4388 1.00 1.00 1.00 2.00 4.00 11.00 21.80 45.64 62.24 9404 1.00 1.00 1.00 1.00 4.00 9.00 17.00 35.00 42.01

4393 1.00 1.00 1.00 2.00 4.00 10.00 18.00 32.00 38.00 9450 1.00 1.00 1.00 1.00 3.00 9.00 16.00 28.00 33.92

4506 1.00 1.00 1.00 2.00 4.00 11.00 19.00 34.00 40.00 9503 1.00 1.00 1.00 2.00 5.00 12.00 21.00 41.46 60.19

4692 1.00 1.00 1.00 2.00 5.00 11.00 19.00 34.76 42.44 9629 1.00 1.00 1.00 1.00 4.00 10.00 18.00 35.76 43.00

4812 1.00 1.00 1.00 2.00 4.00 10.00 18.00 33.00 39.00 9719 1.00 1.00 1.00 2.00 4.00 11.00 19.00 34.20 40.60

4865 1.00 1.00 1.00 2.00 5.00 11.00 20.00 37.00 42.00 9724 1.00 1.00 1.00 1.00 3.00 10.00 17.80 31.00 39.74

4969 1.00 1.00 1.00 1.00 3.00 7.50 19.00 32.52 37.60 9748 1.00 1.00 1.00 1.00 3.00 10.00 17.00 30.64 36.00

4975 1.00 1.00 1.00 1.00 4.00 10.00 18.00 33.60 41.80 9762 1.00 1.00 1.00 2.00 4.00 8.00 15.00 32.34 42.17

4978 1.00 1.00 1.00 1.00 3.00 8.00 17.00 33.00 37.59
166 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–5.4. Empirical distribution of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 1.00 2.00 9.00 26.00 68.60 -- -- 5063 -- -- 1.20 5.00 16.00 19.00 26.00 -- --

0026 1.00 1.00 1.00 2.00 5.00 14.00 25.50 53.10 64.05 5068 1.00 1.00 1.00 2.00 6.00 12.00 23.80 63.48 80.36

0179 1.00 1.00 1.00 1.00 3.00 11.00 22.00 40.00 46.88 5108 1.00 1.00 1.00 2.00 6.00 15.00 26.00 48.92 56.00

0188 1.00 1.00 1.00 2.00 4.00 11.00 24.40 50.00 67.84 5329 -- -- 2.00 3.00 6.00 18.00 68.00 -- --

0215 1.00 1.00 1.00 2.00 5.00 13.00 24.00 42.56 51.28 5463 1.00 1.00 1.00 1.00 3.00 11.00 21.00 38.00 45.31

0242 1.00 1.00 1.00 2.00 5.00 11.00 22.00 46.68 61.00 5581 -- -- 2.20 5.50 13.00 23.50 80.60 -- --

0256 1.00 1.00 1.00 1.00 5.00 13.00 25.00 45.26 55.00 5582 1.00 1.00 1.00 2.00 5.00 11.50 25.80 44.36 51.14

0260 -- -- 1.00 1.00 5.00 13.00 44.50 -- -- 5589 1.00 1.00 1.00 1.00 4.00 12.00 22.00 40.22 49.61

0292 1.00 1.00 1.00 1.00 4.00 13.50 25.00 48.00 60.30 5648 1.00 1.00 1.00 1.00 4.00 11.00 21.00 39.26 50.13

0293 1.00 1.00 1.00 1.00 3.00 12.00 21.30 39.26 52.26 5662 1.00 1.00 1.00 2.00 6.00 15.00 28.00 55.80 65.80

0296 1.00 1.00 1.00 2.00 6.00 15.00 27.50 59.50 70.85 5664 1.00 1.00 1.00 1.00 4.00 13.00 25.00 43.48 47.74

0535 1.00 1.00 1.00 1.00 3.00 12.00 24.00 41.00 48.24 6130 1.00 1.00 1.00 2.00 5.00 14.00 27.00 46.00 55.00

0537 1.00 1.00 1.00 1.00 3.00 11.00 21.80 40.00 56.08 6328 1.00 1.00 1.00 2.00 5.00 12.00 24.00 49.80 62.45

0670 1.00 1.00 1.00 1.00 4.00 13.00 24.00 45.00 52.62 6391 -- -- 1.00 2.00 4.00 12.00 19.60 -- --

0814 1.00 1.00 1.00 1.00 1.00 1.00 10.10 28.46 88.15 6485 1.00 1.00 1.00 1.00 5.00 14.00 25.00 42.00 49.00

0908 1.00 1.00 1.00 1.00 2.00 8.00 19.00 37.00 43.83 6612 -- -- 1.00 1.00 5.50 12.75 35.90 -- --

0912 1.00 1.00 1.00 2.00 4.00 9.00 19.00 34.52 37.00 6616 1.00 1.00 1.00 1.00 4.00 12.00 22.00 40.00 47.77

1148 -- -- 1.00 3.00 7.00 16.00 55.80 -- -- 6620 1.00 1.00 1.00 1.00 3.00 12.00 22.40 39.00 51.70

1168 1.00 1.00 1.00 2.00 6.00 15.00 27.00 49.00 55.00 6627 1.00 1.00 1.00 1.00 4.00 13.00 24.00 42.00 47.04

1391 -- -- 1.00 2.75 5.00 15.75 46.10 -- -- 6638 1.00 1.00 1.00 1.00 4.00 13.00 24.00 45.00 54.00

1436 1.00 1.00 1.00 3.00 6.00 14.00 28.00 47.74 61.35 6643 1.00 1.00 1.00 2.00 6.00 16.00 28.10 64.84 88.09

1437 1.00 1.00 1.00 1.00 5.00 14.00 25.00 44.08 50.00 6656 1.00 1.00 1.00 2.00 5.00 13.25 28.90 55.00 60.58

1544 1.00 1.00 1.00 1.00 5.00 15.00 27.00 48.14 56.71 6661 1.00 1.00 1.00 2.00 6.00 16.00 27.00 49.00 60.00

1684 1.00 1.00 1.00 1.00 4.00 12.00 22.00 40.00 50.00 6729 1.00 1.00 1.00 2.00 5.00 13.00 23.00 42.24 50.12

1688 1.00 1.00 1.00 2.00 5.00 13.25 23.10 42.46 56.20 6740 1.00 1.00 1.00 1.00 3.00 9.00 18.00 34.00 39.60

1750 1.00 1.00 1.00 1.00 4.00 11.00 21.00 38.00 49.00 6760 1.00 1.00 1.00 2.00 5.00 12.00 22.00 41.72 53.44

1855 -- -- 2.00 5.00 12.00 32.00 62.80 -- -- 6859 1.00 1.00 1.00 1.00 5.00 13.00 24.00 43.16 53.00

1891 -- -- -- 1.25 2.00 23.75 -- -- -- 6926 -- -- 1.70 3.50 10.50 20.75 33.40 -- --

1900 1.00 1.00 1.00 2.00 5.00 13.00 25.00 45.36 56.68 6935 1.00 1.00 1.00 1.00 5.00 13.00 24.00 42.00 52.00

1902 1.00 1.00 1.00 1.00 4.00 13.00 22.00 38.12 43.56 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- 1.30 2.00 6.00 12.25 61.90 -- -- 6944 1.00 1.00 1.00 1.00 4.00 13.00 24.00 43.00 53.00

1954 -- -- 2.00 3.00 10.50 26.50 71.00 -- -- 7080 1.00 1.00 1.00 2.00 5.00 14.00 27.00 48.00 58.12

2145 1.00 1.00 1.00 1.00 5.00 11.00 24.00 40.80 57.60 7196 1.00 1.00 1.00 1.00 4.00 12.00 23.00 41.00 48.82

2242 -- -- 2.00 3.00 6.50 15.00 35.60 -- -- 7201 1.00 1.00 1.00 2.00 5.00 12.25 25.00 47.90 53.15

2309 1.00 1.00 1.00 2.00 5.00 13.00 23.70 35.96 49.63 7309 1.00 1.00 1.00 1.00 4.00 13.00 23.00 38.00 48.60

2334 1.00 1.00 1.00 1.00 3.00 10.00 21.00 40.32 48.00 7358 1.00 1.00 1.00 2.00 5.00 14.00 25.00 45.76 57.00

2500 -- -- 2.00 6.00 9.00 17.00 38.40 -- -- 7372 -- -- 2.00 3.25 9.00 22.25 53.00 -- --

2654 1.00 1.00 1.00 1.00 4.00 13.00 24.00 41.00 50.88 7412 1.00 1.00 1.00 1.00 3.00 9.00 20.00 39.00 47.22

2665 1.00 1.00 1.00 2.00 4.00 11.00 23.00 43.00 52.22 7556 1.00 1.00 1.00 1.00 3.00 11.00 23.00 43.88 48.72

2678 -- -- 1.40 3.00 14.00 27.50 55.40 -- -- 7588 1.00 1.00 1.00 1.00 4.00 11.00 22.00 52.80 67.40

2849 1.00 1.00 1.00 1.00 4.00 11.00 22.00 45.68 56.00 7660 1.00 1.00 1.00 1.00 3.00 9.00 21.00 40.14 47.00

2852 1.00 1.00 1.00 1.00 3.00 11.00 21.00 37.26 48.15 7675 1.00 1.00 1.00 1.00 4.00 12.00 23.00 39.84 46.92

2994 1.00 1.00 1.00 2.00 4.00 14.00 27.00 47.78 57.00 7705 1.00 1.00 1.00 1.00 4.00 12.00 23.00 45.54 53.27

2997 1.00 1.00 1.00 2.25 6.00 13.00 26.00 41.22 46.22 7714 1.00 1.00 1.00 2.00 4.00 12.00 21.00 50.96 56.48

3002 1.00 1.00 1.00 1.00 3.00 9.00 19.80 37.00 44.28 7732 1.00 1.00 1.00 2.00 5.00 13.00 25.00 41.76 48.76

3281 1.00 1.00 1.00 1.00 4.00 11.00 22.00 42.00 49.99 7739 1.00 1.00 1.00 1.00 4.00 13.00 23.60 42.00 50.00

3286 1.00 1.00 1.00 2.00 4.00 13.00 24.00 45.80 55.00 8029 1.00 1.00 1.00 1.00 4.00 9.00 19.00 39.06 60.42

3304 1.00 1.00 1.00 1.00 4.00 11.00 22.00 40.00 48.97 8092 -- -- -- 2.25 11.00 18.25 -- -- --

3353 -- -- 1.90 3.75 8.00 17.50 108.40 -- -- 8101 1.00 1.00 1.00 1.00 3.00 9.00 21.00 38.00 47.00

3407 1.00 1.00 1.00 1.00 7.00 14.00 25.00 55.96 61.58 8290 1.00 1.00 1.00 1.00 5.00 12.50 24.00 48.00 55.00

3497 1.00 1.00 1.00 1.00 4.00 11.00 23.00 45.04 58.00 8420 1.00 1.00 1.00 2.00 5.00 12.00 24.00 46.76 52.00

3628 1.00 1.00 1.00 1.00 3.00 9.00 20.00 39.00 49.99 8470 -- -- 1.00 2.00 4.00 14.00 25.00 -- --

3700 1.00 1.00 1.00 2.00 5.00 12.00 23.00 45.94 57.47 8497 1.00 1.00 1.00 1.00 4.00 13.00 24.00 47.00 53.44

3740 1.00 1.00 1.00 1.00 4.00 11.00 22.00 40.94 49.00 8501 1.00 1.00 1.00 1.00 4.00 11.00 22.00 38.00 46.59

3830 1.00 1.00 1.00 2.00 4.00 12.00 23.70 45.00 67.70 8504 1.00 1.00 1.00 1.00 4.00 10.25 19.00 41.14 55.26

3835 1.00 1.00 1.00 1.00 7.00 13.00 25.00 51.64 68.44 8708 1.00 1.00 1.00 1.00 3.00 10.00 21.00 38.00 45.92

4001 -- -- -- 1.00 5.00 20.75 -- -- -- 8769 1.00 1.00 1.00 2.00 5.00 13.00 24.00 45.00 53.32

4008 -- -- 1.00 4.00 9.00 23.50 57.80 -- -- 8879 1.00 1.00 1.00 2.00 5.00 12.00 23.00 36.66 57.95

4010 1.00 1.00 1.00 2.00 6.00 15.00 28.00 51.76 58.38 8884 -- -- -- 6.00 14.00 29.00 -- -- --

4051 1.00 1.00 1.00 2.00 5.00 13.00 24.00 43.86 49.43 8992 1.00 1.00 1.00 2.00 6.00 16.00 28.00 49.00 57.00

4052 1.00 1.00 1.00 1.00 4.00 12.00 23.00 41.00 50.24 9014 -- 1.00 1.00 2.00 3.50 8.25 15.40 27.92 --

4098 1.00 1.00 1.00 2.00 5.00 14.00 25.00 42.00 50.00 9023 1.00 1.00 1.00 2.00 6.00 16.00 28.00 49.00 59.40

4202 1.00 1.00 1.00 1.00 3.00 11.00 22.00 41.88 48.00 9247 -- -- 2.00 3.00 9.00 16.00 26.60 -- --

4204 1.00 1.00 1.00 2.00 4.00 11.00 25.20 48.48 50.00 9278 -- -- 1.00 5.00 9.00 22.00 35.00 -- --

4384 1.00 1.00 1.00 2.00 5.00 14.00 26.00 47.78 60.00 9300 -- -- 1.00 3.00 10.00 21.50 45.80 -- --

4386 1.00 1.00 1.00 2.00 6.00 15.00 27.00 45.94 54.94 9364 -- -- 1.50 3.00 4.00 5.75 50.50 -- --

4388 1.00 1.00 1.00 2.00 4.00 13.00 25.00 51.60 62.90 9404 1.00 1.00 1.00 1.00 4.00 12.00 23.00 43.00 51.00

4393 1.00 1.00 1.00 2.00 5.00 13.00 24.00 42.00 48.99 9450 1.00 1.00 1.00 1.00 4.00 12.00 22.00 40.00 47.00

4506 1.00 1.00 1.00 2.00 5.00 13.75 26.00 45.78 53.39 9503 1.00 1.00 1.00 3.00 7.00 16.00 30.40 65.64 79.28

4692 1.00 1.00 1.00 2.00 5.00 12.00 22.00 41.56 51.78 9629 1.00 1.00 1.00 2.00 4.00 13.00 25.00 45.00 56.57

4812 1.00 1.00 1.00 2.00 5.00 13.00 24.00 41.00 48.00 9719 1.00 1.00 1.00 2.00 5.00 12.00 23.00 44.40 50.00

4865 1.00 1.00 1.00 2.00 5.00 14.00 26.00 47.00 57.00 9724 1.00 1.00 1.00 1.00 4.00 13.00 24.00 45.88 54.76

4969 1.00 1.00 1.00 1.00 3.00 11.00 22.00 54.00 70.50 9748 1.00 1.00 1.00 1.00 4.00 14.00 25.00 43.00 51.00

4975 1.00 1.00 1.00 2.00 5.00 13.00 23.00 45.00 50.27 9762 1.00 1.00 1.00 2.00 4.00 10.00 20.80 41.00 53.96

4978 1.00 1.00 1.00 1.00 4.00 12.00 23.00 42.00 52.32
Appendix 3 167

Appendix 3–5.5. Empirical distribution of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 1.00 2.00 9.00 43.00 104.00 -- -- 5063 -- -- -- 15.50 19.00 22.00 -- -- --

0026 1.00 1.00 1.00 3.00 7.00 19.00 34.00 62.00 75.84 5068 -- 1.00 1.00 2.00 8.00 20.00 34.00 76.80 --

0179 1.00 1.00 1.00 1.00 4.00 16.00 28.00 50.62 59.62 5108 1.00 1.00 1.00 2.00 7.00 18.00 33.00 63.00 78.00

0188 1.00 1.00 1.00 2.00 5.00 14.00 31.00 59.58 71.16 5329 -- -- 2.00 3.00 6.00 16.50 74.60 -- --

0215 1.00 1.00 1.00 2.00 5.00 15.00 28.00 52.76 64.38 5463 1.00 1.00 1.00 1.00 4.00 15.00 28.00 51.80 68.20

0242 1.00 1.00 1.00 2.00 5.00 13.00 28.00 59.60 73.00 5581 -- -- 2.80 9.00 16.00 31.25 96.30 -- --

0256 1.00 1.00 1.00 1.00 6.00 17.00 31.00 57.00 73.01 5582 1.00 1.00 1.00 2.00 6.00 17.50 31.80 55.52 75.70

0260 -- -- 1.00 1.00 7.00 19.00 49.20 -- -- 5589 1.00 1.00 1.00 1.00 4.50 16.00 29.00 52.18 63.18

0292 1.00 1.00 1.00 1.00 5.00 17.00 31.00 58.20 67.85 5648 1.00 1.00 1.00 1.00 4.00 14.00 28.00 55.00 65.83

0293 1.00 1.00 1.00 1.00 4.00 14.00 28.50 55.10 71.10 5662 1.00 1.00 1.00 3.00 8.00 21.00 37.10 68.64 95.46

0296 1.00 1.00 1.00 2.00 6.00 17.00 31.00 68.02 93.70 5664 1.00 1.00 1.00 1.00 5.00 17.00 30.00 56.12 69.00

0535 1.00 1.00 1.00 1.00 4.00 16.00 30.00 53.00 65.70 6130 1.00 1.00 1.00 2.00 7.00 18.00 32.00 58.12 71.06

0537 1.00 1.00 1.00 1.00 5.00 16.00 27.80 51.88 57.72 6328 1.00 1.00 1.00 2.00 5.00 15.00 28.00 56.42 62.71

0670 1.00 1.00 1.00 1.00 5.00 17.00 31.00 56.00 69.18 6391 -- -- 1.00 2.00 8.00 22.75 32.00 -- --

0814 -- 1.00 1.00 1.00 1.00 1.00 21.00 49.90 -- 6485 1.00 1.00 1.00 2.00 6.00 18.00 32.00 57.02 69.00

0908 1.00 1.00 1.00 1.00 3.00 14.00 27.00 49.74 52.00 6612 -- -- 1.00 1.00 5.00 17.00 40.00 -- --

0912 1.00 1.00 1.00 2.00 4.00 13.00 28.00 49.70 57.45 6616 1.00 1.00 1.00 1.00 5.00 15.00 28.00 49.00 64.35

1148 -- -- 1.00 3.00 8.00 17.00 66.40 -- -- 6620 1.00 1.00 1.00 1.00 5.00 16.00 28.60 55.52 68.00

1168 1.00 1.00 1.00 2.00 7.00 19.00 33.00 62.00 76.00 6627 1.00 1.00 1.00 1.00 5.00 15.00 29.00 54.32 71.49

1391 -- -- 1.00 3.00 9.50 32.00 69.00 -- -- 6638 1.00 1.00 1.00 1.00 6.00 17.00 30.00 59.60 72.00

1436 1.00 1.00 1.00 3.00 7.00 18.50 34.00 72.12 87.06 6643 1.00 1.00 1.00 2.00 6.00 19.00 37.00 69.08 94.92

1437 1.00 1.00 1.00 1.00 6.00 19.00 32.70 55.34 65.00 6656 1.00 1.00 1.00 2.00 7.00 17.00 38.40 69.56 85.12

1544 1.00 1.00 1.00 2.00 6.00 19.00 36.00 63.00 78.00 6661 1.00 1.00 1.00 2.00 7.00 20.00 35.00 65.00 75.00

1684 1.00 1.00 1.00 1.00 5.00 16.00 28.00 53.00 63.44 6729 1.00 1.00 1.00 2.00 6.00 17.00 31.00 54.00 65.82

1688 1.00 1.00 1.00 2.00 6.00 16.50 37.40 68.48 77.96 6740 1.00 1.00 1.00 1.00 4.00 12.00 25.00 44.00 53.24

1750 1.00 1.00 1.00 1.00 4.00 14.00 27.00 52.00 61.00 6760 1.00 1.00 1.00 2.00 5.00 14.00 27.60 54.84 69.96

1855 -- -- 2.00 5.00 12.00 32.00 62.80 -- -- 6859 1.00 1.00 1.00 2.00 5.00 15.75 30.00 55.40 70.35

1891 -- -- -- -- 24.00 -- -- -- -- 6926 -- -- 1.50 7.50 13.50 24.25 50.50 -- --

1900 1.00 1.00 1.00 2.00 6.00 16.00 30.00 56.92 70.88 6935 1.00 1.00 1.00 1.00 5.00 16.00 29.00 54.74 63.37

1902 1.00 1.00 1.00 1.00 5.00 16.00 29.00 48.34 58.00 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- 2.00 5.00 8.00 21.25 73.70 -- -- 6944 1.00 1.00 1.00 1.00 5.00 16.00 30.00 54.24 66.00

1954 -- -- 2.00 3.75 14.50 39.50 114.80 -- -- 7080 1.00 1.00 1.00 2.00 6.00 18.00 33.00 59.00 80.00

2145 1.00 1.00 1.00 1.00 5.00 15.00 30.30 55.86 67.44 7196 1.00 1.00 1.00 1.00 5.00 15.00 27.00 49.00 57.02

2242 -- -- 2.30 4.50 8.50 23.00 65.60 -- -- 7201 1.00 1.00 1.00 2.00 7.00 21.00 34.00 54.20 59.80

2309 1.00 1.00 1.00 3.00 8.00 21.00 30.00 64.62 109.20 7309 1.00 1.00 1.00 1.00 5.00 15.00 28.00 53.00 63.00

2334 1.00 1.00 1.00 1.00 4.00 13.00 26.00 51.20 66.20 7358 1.00 1.00 1.00 3.00 6.00 18.00 32.00 60.24 78.00

2500 -- -- 4.00 7.50 12.00 38.00 77.60 -- -- 7372 -- -- 2.00 5.50 11.00 32.25 61.30 -- --

2654 1.00 1.00 1.00 1.00 5.00 18.00 30.50 52.00 65.85 7412 1.00 1.00 1.00 1.00 4.00 12.00 27.00 52.00 61.57

2665 1.00 1.00 1.00 2.00 5.00 13.00 27.00 55.00 67.62 7556 1.00 1.00 1.00 1.00 4.00 17.00 31.00 49.22 61.77

2678 -- -- 1.40 3.00 14.00 27.50 55.40 -- -- 7588 1.00 1.00 1.00 1.00 4.00 13.00 28.90 58.00 77.07

2849 1.00 1.00 1.00 1.00 4.00 15.00 28.00 54.42 66.42 7660 1.00 1.00 1.00 1.00 4.00 13.00 27.00 49.10 61.10

2852 1.00 1.00 1.00 1.00 3.50 15.00 28.30 50.00 60.32 7675 1.00 1.00 1.00 1.00 5.00 15.00 29.00 51.86 63.93

2994 1.00 1.00 1.00 2.00 5.00 18.00 33.00 63.96 74.44 7705 1.00 1.00 1.00 1.00 5.00 16.00 31.00 55.44 69.22

2997 1.00 1.00 1.00 3.00 6.00 15.50 31.00 51.00 67.10 7714 1.00 1.00 1.00 2.00 5.00 14.00 28.00 60.00 73.94

3002 1.00 1.00 1.00 1.00 3.00 12.00 25.00 50.00 58.56 7732 1.00 1.00 1.00 2.00 5.00 16.00 30.00 53.00 61.10

3281 1.00 1.00 1.00 1.00 5.00 14.00 29.00 51.12 65.56 7739 1.00 1.00 1.00 1.00 5.00 16.00 29.00 52.00 61.02

3286 1.00 1.00 1.00 2.00 5.00 16.00 30.00 54.00 66.00 8029 1.00 1.00 1.00 1.00 4.00 12.00 26.00 50.94 71.85

3304 1.00 1.00 1.00 2.00 4.00 14.00 28.00 52.00 62.00 8092 -- -- -- 2.25 11.00 18.25 -- -- --

3353 -- -- 1.80 3.50 8.00 15.00 126.00 -- -- 8101 1.00 1.00 1.00 1.00 4.00 13.00 28.00 51.00 62.65

3407 1.00 1.00 1.00 1.00 7.00 19.00 37.00 61.76 76.92 8290 1.00 1.00 1.00 1.00 5.00 15.00 30.00 55.00 69.02

3497 1.00 1.00 1.00 1.00 4.00 15.00 29.00 57.00 67.77 8420 1.00 1.00 1.00 2.00 5.00 14.00 28.00 53.66 73.66

3628 1.00 1.00 1.00 1.00 4.00 13.00 27.00 52.00 60.90 8470 -- -- 1.00 2.00 4.00 14.50 27.10 -- --

3700 1.00 1.00 1.00 2.00 5.00 15.00 30.00 57.04 71.08 8497 1.00 1.00 1.00 2.00 5.00 17.00 31.00 61.00 71.00

3740 1.00 1.00 1.00 2.00 5.00 14.00 27.00 50.92 60.00 8501 1.00 1.00 1.00 2.00 5.00 14.00 29.00 52.00 62.37

3830 1.00 1.00 1.00 2.00 5.00 15.25 31.00 62.26 70.52 8504 1.00 1.00 1.00 1.00 4.00 12.75 25.00 52.52 63.00

3835 1.00 1.00 1.00 1.00 7.00 19.00 36.20 92.20 113.08 8708 1.00 1.00 1.00 1.00 4.00 14.00 27.00 52.00 57.93

4001 -- -- -- 1.00 5.00 20.75 -- -- -- 8769 1.00 1.00 1.00 2.00 6.00 17.00 30.00 57.00 69.40

4008 -- -- 1.00 4.00 9.00 23.50 57.80 -- -- 8879 1.00 1.00 1.00 2.50 6.00 15.00 31.00 68.80 75.16

4010 1.00 1.00 1.00 2.00 7.00 18.00 34.00 60.96 79.36 8884 -- -- -- 6.00 14.00 29.00 -- -- --

4051 1.00 1.00 1.00 2.00 5.00 15.00 31.00 60.56 73.17 8992 1.00 1.00 1.00 2.00 7.00 20.00 35.00 60.74 74.00

4052 1.00 1.00 1.00 1.00 4.00 16.00 30.00 60.70 72.35 9014 -- 1.00 1.00 2.00 4.00 16.25 28.00 42.60 --

4098 1.00 1.00 1.00 2.00 6.00 17.00 30.00 53.00 71.00 9023 1.00 1.00 1.00 3.00 7.00 20.00 35.00 63.74 76.74

4202 1.00 1.00 1.00 1.00 4.00 15.00 28.00 52.00 69.00 9247 -- -- 2.00 3.00 12.00 26.00 39.60 -- --

4204 1.00 1.00 1.00 2.00 5.00 16.50 32.00 50.00 58.97 9278 -- -- 1.00 7.00 16.00 27.00 54.00 -- --

4384 1.00 1.00 1.00 2.00 6.00 18.00 34.00 62.00 72.55 9300 -- -- 1.50 4.00 15.50 25.75 58.50 -- --

4386 1.00 1.00 1.00 2.00 7.00 20.00 35.00 56.66 71.33 9364 -- -- 1.50 3.00 4.00 12.00 50.50 -- --

4388 -- 1.00 1.00 2.00 4.00 16.00 43.00 75.12 -- 9404 1.00 1.00 1.00 2.00 5.00 15.25 29.00 54.14 69.00

4393 1.00 1.00 1.00 2.00 5.00 15.00 29.00 50.00 60.40 9450 1.00 1.00 1.00 1.00 5.00 16.00 29.00 50.82 64.00

4506 1.00 1.00 1.00 2.00 6.00 16.00 31.00 57.00 68.64 9503 1.00 1.00 1.00 3.00 7.50 19.00 38.00 72.74 100.06

4692 1.00 1.00 1.00 2.00 6.00 14.00 26.00 48.40 57.10 9629 1.00 1.00 1.00 2.00 5.00 16.50 31.00 58.00 69.00

4812 1.00 1.00 1.00 2.00 5.00 16.00 29.00 55.64 69.00 9719 1.00 1.00 1.00 2.00 5.00 14.00 30.00 50.64 57.82

4865 1.00 1.00 1.00 2.00 6.00 18.00 33.00 61.00 74.49 9724 1.00 1.00 1.00 1.00 5.00 18.00 31.40 58.28 75.00

4969 1.00 1.00 1.00 1.00 3.00 13.00 27.00 73.32 87.22 9748 1.00 1.00 1.00 1.00 6.00 19.00 31.20 58.64 67.96

4975 1.00 1.00 1.00 2.00 5.00 16.00 29.00 60.00 70.40 9762 1.00 1.00 1.00 2.00 5.00 13.00 27.00 54.00 62.00

4978 1.00 1.00 1.00 1.00 5.00 15.00 28.00 53.00 63.11
168 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

Appendix 3–5.6. Empirical distribution of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 1.00 1.00 6.00 75.00 123.60 -- -- 5063 -- -- -- 15.50 19.00 22.00 -- -- --

0026 1.00 1.00 1.00 3.00 9.00 33.00 64.00 122.02 147.51 5068 -- 1.00 1.00 3.00 11.00 43.00 96.20 129.36 --

0179 1.00 1.00 1.00 1.00 7.00 26.00 52.00 97.72 117.24 5108 1.00 1.00 1.00 3.00 10.00 31.00 60.00 116.04 132.00

0188 1.00 1.00 1.00 2.00 6.00 25.00 58.90 107.74 127.16 5329 -- -- 5.40 14.25 41.00 104.75 134.00 -- --

0215 1.00 1.00 1.00 2.00 8.00 27.00 57.00 113.48 136.87 5463 1.00 1.00 1.00 1.00 8.00 32.00 59.90 103.38 121.45

0242 1.00 1.00 1.00 2.00 7.00 24.00 55.00 116.44 139.44 5581 -- -- 1.60 8.50 23.50 111.50 144.90 -- --

0256 1.00 1.00 1.00 2.00 10.00 32.00 68.00 119.00 143.00 5582 1.00 1.00 2.00 3.00 8.00 31.00 63.60 115.76 121.44

0260 -- -- 1.00 5.50 20.00 65.75 131.00 -- -- 5589 1.00 1.00 1.00 1.00 8.00 29.00 59.00 108.00 125.10

0292 1.00 1.00 1.00 1.00 9.00 30.00 64.00 137.84 172.96 5648 1.00 1.00 1.00 2.00 7.00 28.00 56.00 104.00 118.52

0293 1.00 1.00 1.00 2.00 7.00 27.00 60.00 106.00 135.00 5662 1.00 1.00 1.00 3.00 12.00 39.00 70.40 142.80 170.88

0296 1.00 1.00 1.00 3.00 9.00 35.00 74.00 126.08 143.39 5664 1.00 1.00 1.00 2.00 9.50 30.00 60.00 112.00 135.50

0535 1.00 1.00 1.00 1.00 9.00 34.75 65.00 124.00 149.00 6130 1.00 1.00 1.00 3.00 10.00 34.25 66.00 122.56 147.78

0537 1.00 1.00 1.00 1.00 7.00 31.00 85.00 132.00 149.82 6328 1.00 1.00 1.00 3.00 8.00 23.00 56.60 120.00 125.00

0670 1.00 1.00 1.00 2.00 10.00 34.00 65.00 120.92 149.96 6391 -- -- 1.00 2.75 13.50 48.00 73.80 -- --

0814 -- 1.00 1.00 1.00 1.00 25.50 49.20 140.60 -- 6485 1.00 1.00 1.00 2.00 10.50 33.00 65.00 122.78 150.39

0908 1.00 1.00 1.00 1.00 5.00 28.00 55.00 109.46 121.46 6612 -- -- 1.00 1.00 21.50 106.00 141.40 -- --

0912 1.00 1.00 1.00 2.00 6.00 24.00 53.80 109.84 126.00 6616 1.00 1.00 1.00 2.00 9.00 30.00 61.00 110.06 132.65

1148 -- -- 1.60 4.50 29.50 104.75 135.10 -- -- 6620 1.00 1.00 1.00 1.00 8.00 28.00 57.00 104.60 122.40

1168 1.00 1.00 1.00 3.00 11.00 33.00 62.00 124.00 157.26 6627 1.00 1.00 1.00 2.00 8.00 29.00 62.00 122.00 135.00

1391 -- -- 1.00 2.00 22.00 62.00 110.20 -- -- 6638 1.00 1.00 1.00 2.00 9.00 33.00 68.00 121.00 135.02

1436 1.00 1.00 2.00 4.00 11.00 34.25 65.00 121.22 146.22 6643 1.00 1.00 1.00 3.00 9.00 29.00 67.60 126.76 177.08

1437 1.00 1.00 1.00 2.00 11.00 37.00 73.00 122.58 143.87 6656 1.00 1.00 1.00 3.00 11.00 39.50 66.00 135.20 146.10

1544 1.00 1.00 1.00 3.00 11.00 36.00 72.00 132.14 165.00 6661 1.00 1.00 1.00 3.00 13.00 38.00 73.00 126.66 147.00

1684 1.00 1.00 1.00 2.00 8.00 29.00 60.00 114.00 129.00 6729 1.00 1.00 1.00 3.00 9.00 32.00 61.00 116.96 129.96

1688 1.00 1.00 1.00 2.00 6.00 27.00 55.80 137.76 158.78 6740 1.00 1.00 1.00 1.00 5.00 26.00 51.00 85.04 95.52

1750 1.00 1.00 1.00 2.00 8.00 30.00 56.00 107.00 127.90 6760 1.00 1.00 1.00 2.00 7.00 24.00 52.00 107.90 125.80

1855 -- -- 2.00 4.00 13.00 68.50 245.00 -- -- 6859 1.00 1.00 1.00 2.00 9.00 31.00 60.00 116.00 142.80

1891 -- -- -- -- 46.50 -- -- -- -- 6926 -- -- -- 7.00 23.00 77.50 -- -- --

1900 1.00 1.00 1.00 3.00 9.00 31.00 61.10 117.00 137.47 6935 1.00 1.00 1.00 2.00 9.00 33.00 62.40 113.16 140.00

1902 1.00 1.00 1.00 2.00 9.00 33.00 65.00 116.10 140.00 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- 1.60 3.00 19.00 98.00 128.00 -- -- 6944 1.00 1.00 1.00 2.00 9.00 31.00 61.00 114.76 134.76

1954 -- -- 2.00 3.50 26.50 73.00 153.00 -- -- 7080 1.00 1.00 1.00 3.00 10.00 34.00 66.60 125.44 153.36

2145 1.00 1.00 1.00 2.00 7.50 27.75 49.60 94.52 125.09 7196 1.00 1.00 1.00 2.00 7.00 28.00 53.00 101.96 133.92

2242 -- -- 2.50 8.75 27.50 96.00 129.00 -- -- 7201 1.00 1.00 1.00 3.00 11.00 34.00 70.60 120.24 160.08

2309 1.00 1.00 1.00 3.00 13.50 44.00 72.50 123.00 137.74 7309 1.00 1.00 1.00 2.00 10.00 36.00 65.60 121.00 141.12

2334 1.00 1.00 1.00 1.00 7.00 25.00 53.30 108.26 130.65 7358 1.00 1.00 2.00 3.00 11.00 33.00 62.00 117.00 143.68

2500 -- -- -- 11.00 31.00 83.50 -- -- -- 7372 -- -- 2.60 6.00 13.00 70.00 131.00 -- --

2654 1.00 1.00 1.00 2.00 9.00 30.00 58.80 122.00 153.06 7412 1.00 1.00 1.00 1.00 5.00 26.00 52.00 104.10 119.65

2665 1.00 1.00 1.00 2.00 7.00 24.00 53.00 97.88 112.91 7556 1.00 1.00 1.00 1.00 8.00 34.00 64.00 114.00 133.70

2678 -- -- -- 4.25 19.00 47.50 -- -- -- 7588 1.00 1.00 1.00 1.25 5.00 27.00 61.00 125.36 139.72

2849 1.00 1.00 1.00 2.00 7.00 28.00 58.00 108.72 134.86 7660 1.00 1.00 1.00 1.00 5.00 24.00 52.00 101.86 120.00

2852 1.00 1.00 1.00 1.00 6.00 23.00 47.10 106.00 122.21 7675 1.00 1.00 1.00 1.00 8.00 28.00 62.00 120.24 136.52

2994 1.00 1.00 1.00 3.00 9.00 35.00 63.00 108.40 135.70 7705 1.00 1.00 1.00 2.00 8.00 31.00 59.00 115.34 138.68

2997 1.00 1.00 2.00 3.00 10.00 35.00 61.70 95.12 121.75 7714 1.00 1.00 1.00 2.00 7.00 26.00 57.00 116.96 138.95

3002 1.00 1.00 1.00 1.00 5.00 23.00 50.00 97.00 116.40 7732 1.00 1.00 1.00 2.00 9.00 28.00 57.90 112.58 139.69

3281 1.00 1.00 1.00 2.00 7.00 29.00 58.00 107.24 124.48 7739 1.00 1.00 1.00 2.00 10.00 34.50 67.00 114.88 138.52

3286 1.00 1.00 1.00 2.00 9.00 32.50 62.00 122.00 142.56 8029 1.00 1.00 1.00 2.00 6.00 26.00 54.10 110.42 135.47

3304 1.00 1.00 1.00 2.00 7.00 27.00 59.00 101.00 120.92 8092 -- -- -- -- 19.00 -- -- -- --

3353 -- -- 1.90 8.00 20.50 93.50 138.50 -- -- 8101 1.00 1.00 1.00 1.00 6.00 28.00 58.00 113.20 136.10

3407 1.00 1.00 1.00 1.00 13.00 37.00 68.00 150.52 182.92 8290 1.00 1.00 1.00 2.00 8.00 31.00 58.20 121.48 147.12

3497 1.00 1.00 1.00 2.00 8.00 30.00 60.00 113.52 139.00 8420 1.00 1.00 1.00 2.00 7.00 25.00 61.50 110.00 129.05

3628 1.00 1.00 1.00 2.00 6.00 26.00 52.00 102.06 120.53 8470 -- -- 1.00 2.00 7.00 32.00 88.40 -- --

3700 1.00 1.00 1.00 3.00 8.00 28.00 57.40 117.68 144.36 8497 1.00 1.00 1.00 2.00 9.00 31.50 63.00 114.00 137.00

3740 1.00 1.00 1.00 2.00 8.00 27.00 57.00 114.94 137.94 8501 1.00 1.00 1.00 2.00 7.00 28.00 58.00 119.00 139.62

3830 1.00 1.00 1.00 2.00 7.00 28.75 56.00 126.16 153.96 8504 1.00 1.00 1.00 1.00 7.00 25.00 50.00 107.66 120.66

3835 1.00 1.00 1.00 7.00 19.00 49.00 85.00 172.60 211.96 8708 1.00 1.00 1.00 1.00 7.00 30.00 56.00 104.32 124.12

4001 -- -- -- 1.00 24.00 89.75 -- -- -- 8769 1.00 1.00 1.00 2.00 9.00 30.00 61.00 120.00 142.88

4008 -- -- 1.00 4.00 9.50 28.50 89.70 -- -- 8879 1.00 1.00 1.00 3.00 8.00 27.50 66.80 110.88 148.34

4010 1.00 1.00 1.00 3.00 11.00 35.00 67.60 122.24 147.24 8884 -- -- -- 20.00 74.00 95.00 -- -- --

4051 1.00 1.00 1.00 2.00 8.00 30.00 62.40 107.76 131.60 8992 1.00 1.00 1.00 3.00 13.00 38.00 71.00 129.06 164.00

4052 1.00 1.00 1.00 1.00 8.00 32.00 68.00 121.00 142.74 9014 -- -- 1.00 2.00 7.00 31.75 67.50 -- --

4098 1.00 1.00 1.00 2.00 9.00 30.50 59.00 115.40 141.10 9023 1.00 1.00 1.00 4.00 11.00 37.00 70.00 124.00 144.23

4202 1.00 1.00 1.00 1.00 7.00 28.00 57.00 102.00 120.59 9247 -- -- 2.00 3.25 36.50 97.25 221.20 -- --

4204 1.00 1.00 1.00 2.00 5.00 27.00 56.00 123.60 153.60 9278 -- -- 2.60 16.00 22.00 65.00 142.00 -- --

4384 1.00 1.00 1.00 3.00 10.00 34.00 66.00 122.16 143.00 9300 -- -- 1.00 4.00 33.00 93.00 142.20 -- --

4386 1.00 1.00 1.00 3.00 11.00 34.00 68.00 124.20 149.00 9364 -- -- 1.00 3.00 4.50 58.00 126.30 -- --

4388 -- 1.00 1.00 2.00 9.00 34.50 74.80 120.22 -- 9404 1.00 1.00 1.00 2.00 8.00 29.00 60.00 106.34 125.51

4393 1.00 1.00 1.00 2.00 8.00 29.00 57.00 105.00 121.50 9450 1.00 1.00 1.00 2.00 9.00 30.75 62.00 117.74 132.87

4506 1.00 1.00 1.00 3.00 10.00 34.00 64.00 113.80 146.20 9503 1.00 1.00 1.30 3.00 12.00 39.00 69.70 138.56 152.99

4692 1.00 1.00 1.00 3.00 9.00 26.00 65.00 119.76 133.84 9629 1.00 1.00 1.00 2.00 9.00 32.00 61.00 115.52 129.00

4812 1.00 1.00 1.00 3.00 9.00 31.00 61.00 111.86 135.00 9719 1.00 1.00 1.00 2.00 7.00 26.00 55.30 106.30 127.00

4865 1.00 1.00 1.00 3.00 9.00 32.00 65.00 118.00 132.12 9724 1.00 1.00 1.00 2.00 11.00 36.00 75.00 120.00 142.00

4969 1.00 1.00 1.00 1.00 4.50 25.75 52.30 140.36 148.27 9748 1.00 1.00 1.00 2.00 14.00 40.00 69.90 118.14 130.69

4975 1.00 1.00 1.00 2.00 8.00 28.00 63.80 112.36 134.54 9762 1.00 1.00 1.00 2.00 6.00 25.00 55.00 105.78 121.67

4978 1.00 1.00 1.00 2.00 7.00 29.00 57.50 108.00 124.00
Appendix 3 169

Appendix 3–5.7. Empirical distribution of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in 

Oklahoma.

[--, not available]

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0017 -- -- 1.60 6.00 75.00 134.00 168.20 -- -- 5063 -- -- -- 15.00 19.00 95.00 -- -- --

0026 1.00 1.00 1.00 3.25 13.00 56.75 108.70 224.68 248.67 5068 -- 1.00 1.00 4.75 19.50 81.00 153.10 198.92 --

0179 1.00 1.00 1.00 2.00 11.00 45.00 92.60 180.92 210.96 5108 1.00 1.00 1.00 4.00 15.00 53.00 101.00 198.00 247.45

0188 1.00 1.00 1.00 2.00 8.00 40.00 93.00 182.00 201.00 5329 -- -- -- 11.25 41.00 125.00 -- -- --

0215 1.00 1.00 1.00 3.00 12.00 53.00 103.00 198.72 236.62 5463 1.00 1.00 1.00 1.00 14.00 51.00 102.00 183.68 240.32

0242 1.00 1.00 1.00 2.00 9.00 45.00 92.00 173.84 200.23 5581 -- -- -- 18.00 91.00 151.75 -- -- --

0256 1.00 1.00 1.00 3.00 16.00 62.00 111.00 208.30 242.30 5582 1.00 1.00 2.00 4.00 12.00 49.25 99.40 240.46 282.51

0260 -- -- 1.00 12.00 24.00 131.00 324.80 -- -- 5589 1.00 1.00 1.00 2.00 14.00 57.00 105.10 171.36 207.30

0292 1.00 1.00 1.00 2.00 14.00 52.50 112.00 224.16 240.54 5648 1.00 1.00 1.00 2.00 12.00 53.00 97.00 180.00 226.23

0293 1.00 1.00 1.00 2.00 11.00 51.00 93.40 174.12 214.28 5662 1.00 1.00 2.00 4.00 20.50 62.00 115.40 257.08 285.85

0296 1.00 1.00 1.00 4.00 17.00 62.00 111.70 251.60 330.44 5664 1.00 1.00 1.00 3.00 16.00 59.00 110.90 196.72 241.03

0535 1.00 1.00 1.00 2.00 21.00 61.50 110.00 277.04 324.86 6130 1.00 1.00 1.00 4.00 17.00 63.00 118.00 212.00 239.00

0537 1.00 1.00 1.00 2.00 12.00 73.00 108.00 216.00 312.60 6328 1.00 1.00 1.00 3.00 11.00 44.00 95.20 173.48 194.48

0670 1.00 1.00 1.00 3.00 18.00 62.00 116.00 206.00 260.24 6391 -- -- 1.00 5.00 67.00 162.50 244.60 -- --

0814 -- 1.00 1.00 1.00 1.00 33.00 113.80 229.28 -- 6485 1.00 1.00 1.00 3.00 17.00 60.00 109.00 222.00 265.70

0908 1.00 1.00 1.00 2.00 10.00 49.00 89.40 173.44 219.87 6612 -- -- -- 5.00 40.00 119.75 -- -- --

0912 1.00 1.00 1.00 2.00 9.00 42.00 92.00 153.40 217.40 6616 1.00 1.00 1.00 3.00 14.00 57.50 108.60 179.84 211.92

1148 -- -- -- 39.50 119.50 164.50 -- -- -- 6620 1.00 1.00 1.00 2.00 16.00 59.00 100.00 171.38 228.04

1168 1.00 1.00 1.00 4.00 18.00 62.00 114.90 208.74 264.58 6627 1.00 1.00 1.00 3.00 12.00 62.00 124.50 220.10 245.20

1391 -- -- 1.40 4.00 35.00 130.00 359.00 -- -- 6638 1.00 1.00 1.00 3.00 16.00 61.00 109.30 204.04 257.56

1436 1.00 1.00 2.00 4.75 17.00 60.25 106.00 195.90 292.25 6643 1.00 1.00 2.00 4.00 16.00 58.50 119.40 206.80 216.80

1437 1.00 1.00 1.00 4.00 19.00 62.50 122.00 228.32 270.86 6656 1.00 1.00 1.00 4.00 17.00 64.25 128.80 228.12 272.34

1544 1.00 1.00 1.00 4.00 20.00 66.50 121.00 229.00 272.90 6661 1.00 1.00 2.00 5.00 22.00 70.00 126.00 209.00 267.30

1684 1.00 1.00 1.00 3.00 14.00 59.00 112.40 191.00 228.02 6729 1.00 1.00 1.00 3.00 16.00 61.00 113.00 215.28 260.28

1688 1.00 1.00 1.00 3.00 15.00 54.00 96.60 198.76 219.24 6740 1.00 1.00 1.00 2.00 11.00 51.00 89.00 180.48 225.48

1750 1.00 1.00 1.00 2.00 13.00 51.00 98.00 188.20 232.60 6760 1.00 1.00 1.00 2.00 9.00 42.00 91.00 153.28 179.60

1855 -- -- 2.20 8.50 58.50 145.50 318.60 -- -- 6859 1.00 1.00 1.00 3.00 15.00 58.00 106.00 191.64 253.28

1891 -- -- -- -- 46.50 -- -- -- -- 6926 -- -- -- 12.00 53.00 267.50 -- -- --

1900 1.00 1.00 1.00 4.00 14.00 56.25 110.00 209.20 253.45 6935 1.00 1.00 1.00 3.00 16.00 60.25 110.00 206.52 248.65

1902 1.00 1.00 1.00 3.00 18.00 63.00 108.00 238.24 278.60 6940 -- -- -- -- .00 -- -- -- --

1909 -- -- 1.40 9.00 63.00 120.00 160.00 -- -- 6944 1.00 1.00 1.00 2.00 15.00 59.00 110.00 210.24 245.06

1954 -- -- 2.00 3.50 40.00 114.75 389.70 -- -- 7080 1.00 1.00 1.00 4.00 17.00 65.00 122.00 226.82 267.88

2145 1.00 1.00 1.00 2.00 9.00 32.00 84.00 162.00 260.00 7196 1.00 1.00 1.00 2.00 12.00 50.25 98.00 182.72 230.36

2242 -- -- -- 26.00 120.00 163.75 -- -- -- 7201 1.00 1.00 2.00 3.00 18.00 59.75 141.00 297.00 456.55

2309 1.00 1.00 1.50 3.75 19.50 56.50 121.50 262.50 301.00 7309 1.00 1.00 1.00 3.00 17.00 64.00 114.40 222.08 257.96

2334 1.00 1.00 1.00 2.00 11.50 56.00 104.00 194.76 245.37 7358 1.00 1.00 2.00 4.00 21.00 64.75 112.10 234.00 281.73

2500 -- -- -- 10.00 68.00 123.00 -- -- -- 7372 -- -- 6.00 7.00 36.00 115.00 284.60 -- --

2654 1.00 1.00 1.00 3.00 16.00 58.00 108.00 211.80 249.20 7412 1.00 1.00 1.00 2.00 8.00 45.00 96.00 169.60 198.60

2665 1.00 1.00 1.00 3.00 9.00 42.00 88.00 161.54 193.54 7556 1.00 1.00 1.00 2.00 14.50 56.75 98.00 203.90 272.50

2678 -- -- -- 5.00 29.00 50.00 -- -- -- 7588 1.00 1.00 1.00 2.00 7.00 43.00 94.00 194.72 247.72

2849 1.00 1.00 1.00 2.00 12.00 51.00 103.90 196.36 226.09 7660 1.00 1.00 1.00 2.00 8.00 47.50 92.00 179.00 198.74

2852 1.00 1.00 1.00 1.00 9.00 40.00 79.40 132.00 139.12 7675 1.00 1.00 1.00 2.00 14.00 54.00 103.00 205.30 233.35

2994 1.00 1.00 1.00 4.00 18.00 61.00 121.00 209.68 295.40 7705 1.00 1.00 1.00 3.00 14.00 56.50 100.00 184.64 210.66

2997 1.00 1.00 2.00 3.00 12.00 44.00 84.20 195.08 239.68 7714 1.00 1.00 1.00 3.00 10.00 44.00 87.20 158.04 202.80

3002 1.00 1.00 1.00 1.00 7.00 38.00 80.30 169.00 196.09 7732 1.00 1.00 1.00 3.00 12.50 53.00 96.90 198.90 261.18

3281 1.00 1.00 1.00 2.00 12.00 50.00 95.00 181.84 216.64 7739 1.00 1.00 1.00 3.00 19.00 65.00 109.80 199.52 256.18

3286 1.00 1.00 1.00 3.00 16.00 61.00 112.00 205.60 255.20 8029 1.00 1.00 1.00 2.00 9.00 43.00 90.00 155.00 200.88

3304 1.00 1.00 1.00 2.00 10.00 49.00 93.50 198.70 231.90 8092 -- -- -- -- 19.00 -- -- -- --

3353 -- -- -- 9.25 44.50 115.50 -- -- -- 8101 1.00 1.00 1.00 2.00 10.00 52.00 95.00 180.56 203.28

3407 1.00 1.00 1.00 2.00 16.00 61.50 132.20 345.16 360.92 8290 1.00 1.00 1.00 3.00 14.00 54.00 103.00 202.80 234.20

3497 1.00 1.00 1.00 2.00 13.00 55.00 99.00 192.32 237.48 8420 1.00 1.00 1.00 3.00 11.00 58.00 97.90 206.46 228.07

3628 1.00 1.00 1.00 2.00 9.00 48.00 91.00 192.52 233.56 8470 -- -- 1.00 3.00 19.50 50.50 133.20 -- --

3700 1.00 1.00 1.00 3.00 13.00 59.00 112.00 196.72 239.88 8497 1.00 1.00 1.00 3.00 16.00 62.00 106.00 205.00 248.72

3740 1.00 1.00 1.00 3.00 11.50 57.00 107.00 197.00 234.05 8501 1.00 1.00 1.00 3.00 13.00 56.00 106.70 180.04 239.67

3830 1.00 1.00 1.00 3.00 10.50 52.25 113.20 215.30 245.62 8504 1.00 1.00 1.00 2.00 11.00 50.00 92.00 197.00 278.00

3835 -- 1.00 1.00 9.50 37.00 88.00 165.40 319.00 -- 8708 1.00 1.00 1.00 1.25 13.00 53.75 99.90 183.32 224.37

4001 -- -- -- 1.00 24.00 89.75 -- -- -- 8769 1.00 1.00 1.00 3.00 15.00 56.00 114.50 215.30 247.00

4008 -- -- 1.00 4.00 10.00 35.00 103.60 -- -- 8879 1.00 1.00 1.00 3.00 10.50 45.25 98.00 211.50 247.00

4010 1.00 1.00 2.00 4.00 18.00 58.25 103.30 223.66 272.65 8884 -- -- -- -- 35.00 -- -- -- --

4051 1.00 1.00 1.00 3.00 12.50 55.00 99.00 175.24 215.10 8992 1.00 1.00 2.00 5.00 22.50 71.00 128.50 244.50 313.75

4052 1.00 1.00 1.00 2.00 14.00 58.75 111.50 218.20 269.20 9014 -- -- 1.00 2.00 15.00 69.75 111.80 -- --

4098 1.00 1.00 1.00 3.00 14.00 57.00 104.40 203.54 226.62 9023 1.00 1.00 2.00 5.00 18.00 64.00 122.00 228.00 264.58

4202 1.00 1.00 1.00 2.00 12.50 51.00 93.00 191.10 218.95 9247 -- -- -- 23.50 74.00 178.50 -- -- --

4204 1.00 1.00 1.00 2.00 15.00 63.25 106.20 208.08 264.71 9278 -- -- -- 11.00 43.50 126.00 -- -- --

4384 1.00 1.00 1.00 3.00 15.00 62.00 113.10 208.68 254.63 9300 -- -- 1.00 3.25 24.00 227.00 338.90 -- --

4386 1.00 1.00 1.00 4.00 17.00 65.00 118.70 231.54 265.08 9364 -- -- 1.00 2.00 63.00 141.00 216.40 -- --

4388 -- 1.00 1.00 2.00 8.50 56.75 193.40 310.80 -- 9404 1.00 1.00 1.00 2.00 12.00 55.00 103.50 187.70 216.85

4393 1.00 1.00 1.00 3.00 15.00 57.00 99.50 214.00 246.00 9450 1.00 1.00 1.00 3.00 14.00 58.00 112.00 211.84 252.12

4506 1.00 1.00 1.00 4.00 19.00 62.00 115.00 212.64 249.44 9503 1.00 1.00 2.00 4.00 16.00 54.50 132.50 273.50 358.95

4692 1.00 1.00 1.00 4.00 13.00 58.00 109.00 227.40 241.04 9629 1.00 1.00 1.00 3.00 15.00 58.00 103.80 184.16 224.40

4812 1.00 1.00 1.00 3.00 16.00 62.00 113.70 191.16 239.70 9719 1.00 1.00 1.00 2.00 11.00 51.00 93.90 182.78 199.17

4865 1.00 1.00 1.00 3.00 13.00 56.00 106.00 196.56 236.12 9724 1.00 1.00 1.00 4.75 23.00 71.00 120.00 233.76 328.26

4969 1.00 1.00 1.00 1.00 11.00 54.00 112.00 235.44 410.04 9748 1.00 1.00 1.00 4.00 23.00 66.00 116.00 219.68 264.17

4975 1.00 1.00 1.00 3.00 14.00 61.00 108.50 198.50 234.45 9762 1.00 1.00 1.00 3.00 10.00 48.00 95.00 192.00 219.20

4978 1.00 1.00 1.00 2.00 14.00 56.00 100.00 177.80 217.60
Blank Page
Statistical Characteristics 

of Storm Interevent Time, 

Depth, and Duration for 

Eastern New Mexico, 

Oklahoma, and Texas

Appendix 4

Appendix 4—

Storm Statistics for Hourly

Rainfall Stations in Texas
Blank Page
Appendix 4 173

Appendix 4–1.1. Number of storms, total duration, and mean storm interevent time defined by 6-hour minimum interevent time for hourly 

rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

0015 11 624 2.14 1154 264 26,928 4.03 2160 28 4,752 6.70 3463 54 30,096 22.95

0016 3,737 543,665 5.83 1165 701 147,768 8.55 2206 864 105,121 4.84 3476 798 127,848 6.44

0050 1,109 197,240 7.14 1185 407 185,232 18.79 2238 292 51,864 7.20 3485 25 1,968 3.04

0054 60 5,688 3.77 1186 135 19,128 5.67 2240 104 12,864 4.98 3507 1,268 188,267 6.01

0120 33 1,896 2.11 1188 11 1,872 6.87 2242 2,075 253,435 4.85 3546 3,726 485,758 5.20

0145 204 28,392 5.60 1245 41 1,992 1.78 2244 3,957 535,994 5.42 3547 231 51,144 9.01

0146 52 5,664 4.28 1246 1,352 176,017 5.26 2247 64 7,056 4.37 3579 89 19,944 9.06

0174 1,542 275,194 7.30 1267 558 116,832 8.52 2309 777 153,600 7.98 3642 3,609 534,563 5.95

0178 25 2,040 3.24 1304 659 117,840 7.22 2312 802 92,757 4.63 3646 2,345 419,874 7.19

0179 348 66,456 7.80 1325 1,614 219,432 5.42 2334 66 22,344 13.85 3668 26 2,016 2.89

0202 299 58,398 8.01 1429 1,423 213,741 6.04 2336 249 53,256 8.71 3673 38 2,016 1.98

0206 2,881 532,111 7.52 1431 2,048 356,239 6.98 2354 32 20,976 27.11 3686 1,324 198,532 6.08

0208 4 384 4.00 1432 1,469 246,787 6.73 2355 64 10,536 6.59 3691 3,195 469,594 5.94

0211 3,890 542,494 5.60 1433 2,147 367,055 6.86 2357 588 98,496 6.75 3734 36 2,016 2.12

0244 96 11,568 4.70 1434 2,179 358,448 6.60 2360 1,968 399,684 8.26 3771 1,629 220,455 5.48

0248 2,159 529,764 10.06 1435 1,289 230,732 7.20 2361 212 56,004 10.85 3789 113 18,888 6.80

0262 2,872 431,066 6.02 1436 2,453 367,281 5.96 2394 3,547 504,483 5.68 3826 240 45,240 7.61

0271 29 2,016 2.64 1437 28 4,728 6.80 2404 3,225 493,624 6.15 3831 456 110,112 9.82

0380 447 163,872 15.03 1438 1,745 284,045 6.52 2415 3,306 501,413 6.06 3841 169 77,472 18.90

0394 11 1,992 7.20 1462 0 4,416 -- 2462 1,103 188,205 6.87 3871 1,614 317,328 7.95

0408 34 2,112 2.40 1492 1,318 280,441 8.70 2528 129 24,840 7.74 3884 23 1,896 3.21

0427 73 11,646 6.47 1500 33 2,112 2.41 2617 276 56,688 8.29 3941 79 7,608 3.70

0428 4,766 529,122 4.38 1528 1,519 366,583 9.88 2619 255 64,992 10.39 3963 7 1,488 8.86

0429 221 22,416 3.94 1541 70 10,953 6.30 2621 1,359 277,864 8.32 4040 500 92,806 7.51

0463 127 51,936 16.81 1569 227 32,160 5.67 2675 1,267 178,918 5.68 4058 30 2,016 2.63

0493 19 1,704 3.45 1632 7 1,320 7.86 2676 1,115 146,737 5.33 4098 1,932 417,420 8.87

0495 373 138,072 15.24 1641 236 110,280 19.25 2679 2,486 536,229 8.81 4100 399 121,992 12.54

0496 27 10,872 16.72 1646 2,656 543,287 8.38 2715 1,954 354,131 7.32 4137 1,336 221,233 6.74

0498 13 7,920 25.33 1663 53 11,460 8.80 2744 1,980 413,376 8.50 4191 2,701 519,452 7.81

0509 3,412 549,223 6.49 1671 3,674 548,538 6.02 2758 135 23,376 6.96 4256 0 21,906 --

0518 2,353 330,777 5.67 1680 1,320 261,792 8.00 2794 11 2,064 7.57 4257 3,572 498,651 5.61

0521 40 5,760 5.77 1694 177 45,172 10.45 2797 2,663 529,606 8.11 4258 221 25,608 4.66

0556 117 21,936 7.54 1696 1,227 268,080 8.87 2811 2,196 435,389 8.08 4278 1,750 409,467 9.51

0569 2,893 399,353 5.55 1697 95 29,496 12.71 2813 30 31,728 43.90 4299 135 86,976 26.68

0572 1,152 158,448 5.50 1698 1,513 291,219 7.85 2814 19 12,336 26.88 4300 3,272 289,264 3.45

0576 160 23,352 5.84 1720 247 46,709 7.73 2815 283 58,942 8.54 4305 2,904 266,616 3.59

0580 389 112,800 11.85 1761 139 16,680 4.80 2818 209 45,312 8.81 4307 770 96,430 4.98

0587 1,009 121,272 4.74 1773 3,920 502,398 5.12 2986 322 54,240 6.74 4309 4,042 517,057 5.10

0605 137 27,000 7.99 1810 26 2,112 3.19 3005 2,981 522,908 7.11 4311 4,116 543,389 5.26

0639 2,686 433,077 6.56 1823 25 1,968 3.11 3033 700 216,192 12.70 4313 316 39,432 4.96

0655 0 718 -- 1870 381 47,496 4.88 3034 2 6,888 143.50 4319 108 29,208 11.01

0665 2,338 361,772 6.20 1875 20 1,752 3.46 3047 36 2,016 2.10 4329 3,165 438,183 5.52

0689 1,825 381,486 8.48 1876 53 10,920 8.26 3103 37 29,448 33.01 4331 0 5,112 --

0690 759 179,395 9.72 1889 368 38,734 4.16 3133 2,976 486,379 6.57 4375 1,392 232,138 6.80

0691 3,002 469,381 6.28 1903 398 83,753 8.64 3156 337 63,435 7.63 4392 565 72,624 5.06

0708 155 32,809 8.67 1914 23 1,752 2.92 3171 2,700 463,053 6.90 4425 981 264,416 11.08

0738 1,987 306,512 6.17 1920 516 109,392 8.61 3189 398 97,104 10.00 4440 1,794 283,440 6.33

0776 1,884 439,998 9.54 1921 3,468 476,617 5.50 3260 188 44,448 9.63 4476 2,109 344,677 6.63

0779 490 108,787 9.11 1937 1,384 186,288 5.33 3267 119 22,512 7.64 4498 14 4,944 14.62

0784 2,097 429,972 8.39 1956 3,740 486,210 5.20 3270 1,780 365,659 8.42 4517 2,004 328,752 6.60

0786 616 117,888 7.76 1970 31 1,992 2.45 3272 25 3,840 6.30 4520 1,352 220,430 6.64

0917 2,556 300,936 4.65 2014 574 69,312 4.82 3277 16 4,176 10.65 4525 35 1,992 2.09

0923 32 2,016 2.31 2015 4,052 484,318 4.76 3278 1,101 253,450 9.42 4563 31 2,112 2.59

0926 3,560 551,357 6.23 2019 30 2,016 2.60 3280 171 41,832 10.01 4570 2,633 548,973 8.50

0950 47 18,936 16.67 2024 2,243 391,758 7.05 3281 48 26,304 22.70 4577 2,335 305,664 5.23

0996 32 1,992 2.38 2042 14 16,080 47.76 3283 2,000 247,224 4.89 4591 3,122 431,406 5.48

1013 280 63,492 9.32 2043 102 36,960 14.98 3284 3,329 499,445 6.05 4670 2,858 541,246 7.71

1017 3,239 549,062 6.87 2048 1,951 409,659 8.57 3285 2,627 382,496 5.90 4671 175 25,848 5.97

1042 27 1,488 1.96 2050 83 17,448 8.57 3329 1,869 306,792 6.61 4679 2,957 429,394 5.86

1048 27 1,728 2.49 2051 70 26,304 15.46 3335 247 33,792 5.44 4696 15 1,992 5.37

1053 734 145,392 8.02 2053 11 3,552 13.31 3370 2,135 317,621 5.95 4703 134 31,392 9.57

1057 1,881 363,120 7.81 2073 1,041 146,832 5.65 3410 2,711 514,264 7.72 4704 473 61,368 5.15

1063 29 1,968 2.58 2082 2,000 519,707 10.67 3415 3,347 537,022 6.50 4731 146 17,160 4.66

1068 3,066 512,393 6.74 2086 2,797 548,518 7.96 3430 5,047 530,963 4.16 4792 1,402 213,141 6.18

1080 215 61,344 11.76 2088 63 10,190 6.54 3431 313 32,784 4.14 4819 343 39,480 4.61

1081 1,407 241,368 6.88 2090 398 58,356 5.95 3441 45 42,816 39.43 4852 17 2,016 4.82

1133 19 2,784 5.81 2096 3,028 493,125 6.57 3442 564 171,216 12.42 4866 3,233 548,790 6.84

1136 4,368 532,054 4.87 2128 385 68,160 7.11 3446 721 213,312 12.14 4876 155 29,184 7.66

1138 23 1,320 2.21 2131 2,616 483,317 7.52 3460 47 7,008 6.01 4878 3,157 350,328 4.37

1139 104 13,056 4.92 2142 22 2,016 3.50 3462 163 49,920 12.53 4880 2,923 551,284 7.66

Appendix 4–1.1. Number of storms, total duration, and mean storm interevent time defined by 6-hour minimum interevent time for hourly 

rainfall stations in Texas.

[--, not available]
174 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

4920 2,278 524,353 9.41 5775 14 5,112 15.00 7481 1,622 495,877 12.57 8743 4,043 527,995 5.20

4934 9 1,992 9.08 5779 27 5,880 8.82 7497 1,678 243,992 5.89 8761 1,118 256,990 9.42

4972 2,943 494,452 6.79 5840 414 78,888 7.66 7498 342 49,632 5.88 8778 2,983 398,041 5.36

4973 513 119,208 9.43 5890 2,724 515,614 7.69 7499 2,724 523,925 7.84 8845 3,555 550,655 6.25

4974 1,491 340,313 9.32 5891 181 53,304 12.09 7531 165 49,968 12.35 8859 2,280 312,504 5.44

4975 1,976 257,716 5.25 5897 1,707 245,324 5.82 7534 362 103,032 11.64 8898 770 116,904 6.05

4978 169 47,496 11.53 5957 2,566 445,446 7.05 7556 3,129 493,793 6.39 8908 46 5,904 5.13

4979 24 1,896 2.89 5958 232 41,136 7.17 7594 2,370 309,414 5.20 8910 23 1,968 3.39

4982 1,174 248,714 8.60 5973 125 23,376 7.53 7596 177 26,136 5.90 8911 1,004 164,256 6.62

5018 813 134,338 6.65 5996 3,420 549,087 6.47 7608 1,865 249,648 5.36 8924 477 181,152 15.67

5048 1,834 503,770 11.29 6017 151 23,280 6.23 7622 23 4,152 7.36 8929 29 2,016 2.66

5049 109 34,272 12.98 6024 296 72,480 9.92 7700 2,663 308,448 4.56 8942 2,480 300,835 4.85

5056 5 10,104 83.94 6050 23 6,576 11.65 7706 2,427 502,063 8.44 8944 1,373 144,888 4.17

5057 1,099 189,960 6.98 6104 2,892 478,193 6.74 7718 118 34,320 11.87 8996 3,294 399,638 4.82

5060 328 59,904 7.36 6108 3,605 542,529 6.06 7745 480 70,872 5.85 9014 25 1,896 2.86

5081 1,491 180,720 4.76 6136 2,496 539,302 8.86 7922 348 111,768 13.22 9037 776 240,720 12.73

5094 3,129 468,823 6.05 6166 106 14,520 5.51 7936 2,603 306,666 4.70 9106 229 65,736 11.76

5113 3,023 523,501 7.02 6176 448 69,264 6.18 7943 3,046 474,742 6.29 9107 40 26,784 27.76

5114 0 1,488 -- 6177 3,106 440,385 5.69 7944 90 8,592 3.74 9129 129 23,376 7.35

5123 17 3,072 7.34 6210 2,506 354,217 5.69 7945 4,789 543,166 4.48 9163 2,614 550,742 8.57

5192 1,973 332,072 6.79 6211 564 93,000 6.67 7947 296 49,618 6.79 9213 292 38,700 5.30

5193 3,814 550,050 5.79 6270 2,103 256,135 4.88 7948 1,214 213,840 7.13 9214 35 2,016 2.16

5224 415 52,608 5.05 6275 0 2,920 -- 7951 1,151 141,648 4.87 9222 265 31,416 4.68

5228 468 79,632 6.87 6276 29 2,016 2.60 7953 141 23,352 6.65 9248 143 52,272 14.98

5235 35 4,392 4.94 6335 2,621 354,128 5.38 7981 260 112,728 17.84 9266 86 17,160 8.06

5247 2,952 552,074 7.62 6434 23 8,016 14.25 7990 156 23,304 6.00 9270 1,914 382,084 8.18

5258 1,010 177,528 7.07 6504 2,650 548,140 8.46 7992 28 1,896 2.59 9295 116 27,672 9.77

5303 749 179,592 9.76 6558 34 5,688 6.72 7997 131 34,656 10.83 9304 4 336 3.50

5312 2,113 404,451 7.81 6615 753 194,104 10.60 7999 21 13,992 27.58 9307 292 79,272 11.09

5341 30 2,016 2.52 6660 132 32,880 10.12 8022 78 48,504 25.69 9328 198 34,344 6.99

5342 0 4,404 -- 6663 119 36,168 12.51 8023 1,804 484,077 11.01 9329 16 3,240 8.10

5348 1,876 240,206 5.14 6734 437 102,262 9.53 8047 2,778 548,776 8.03 9345 3 960 13.33

5358 1,657 387,072 9.53 6736 2,000 452,975 9.27 8060 154 23,376 6.09 9363 1,229 135,816 4.40

5398 3,164 411,020 5.15 6740 21 2,016 3.65 8062 47 6,504 5.47 9364 4,148 418,894 3.99

5410 2,582 528,181 8.36 6750 298 37,990 5.09 8068 41 21,192 21.36 9365 40 5,664 5.71

5411 3,085 462,238 6.03 6757 4,304 551,361 5.10 8081 2,981 537,081 7.30 9371 172 31,416 7.37

5424 543 56,254 4.05 6775 639 110,784 6.99 8089 46 5,760 5.00 9417 2,278 331,982 5.83

5429 1,172 193,392 6.66 6776 2,441 431,190 7.19 8221 24 1,896 2.93 9419 4,521 542,606 4.76

5431 18 13,848 31.61 6788 202 29,256 5.81 8252 2,025 529,928 10.72 9435 85 33,600 16.25

5461 2,076 324,672 6.24 6792 1,812 419,078 9.51 8265 1,862 217,176 4.58 9491 3,127 443,170 5.69

5463 1,375 224,790 6.64 6794 30 2,016 2.43 8289 63 36,528 23.94 9499 2,056 431,095 8.57

5471 28 3,480 5.10 6834 2,445 317,594 5.23 8305 1,882 512,439 11.21 9522 19 2,016 4.14

5477 26 1,992 2.97 6893 1,414 374,777 10.91 8335 1,909 259,728 5.38 9527 2,498 539,410 8.85

5528 1,384 262,609 7.67 6935 2,045 406,635 8.14 8400 258 62,112 9.88 9532 3,180 484,263 6.15

5579 2 696 14.50 6981 216 132,768 25.38 8445 1,491 206,856 5.52 9544 5 2,928 24.27

5580 29 1,944 2.59 7020 159 21,432 5.32 8446 2,086 268,785 5.18 9565 1,682 352,743 8.56

5589 189 37,872 8.21 7060 1,093 277,917 10.43 8451 302 71,544 9.65 9570 580 100,848 7.10

5590 194 39,024 8.17 7066 3,535 470,310 5.31 8531 1,798 305,116 6.82 9574 27 2,856 4.30

5591 723 170,232 9.65 7074 2,335 523,667 9.19 8541 122 22,615 7.49 9588 2,377 457,802 7.83

5592 612 151,920 10.18 7097 131 29,232 9.07 8544 599 110,871 7.48 9665 3,744 548,295 5.89

5594 186 68,448 15.19 7116 679 167,304 10.05 8545 23 4,656 8.15 9715 3,018 443,326 5.91

5595 2 8,016 167.00 7140 2,918 395,594 5.43 8563 1,460 220,484 6.12 9729 3,990 549,310 5.50

5596 1,447 292,949 8.32 7173 1,291 115,200 3.48 8566 612 143,616 9.60 9772 1,149 140,832 4.88

5600 467 105,888 9.26 7174 5,394 474,094 3.43 8583 1,021 203,370 8.16 9814 41 13,030 12.96

5618 37 2,112 2.14 7213 876 156,336 7.19 8584 1,560 344,280 9.01 9815 848 121,848 5.75

5650 22 1896 3.39 7243 3,239 549,034 6.88 8623 1,868 319,544 6.94 9816 83 35,472 17.60

5656 1,863 326,279 7.16 7262 106 27,360 10.63 8625 1,488 243,840 6.57 9817 1,621 356,901 9.00

5658 995 209,400 8.53 7274 471 121,725 10.56 8630 861 226,383 10.76 9829 1,684 436,603 10.63

5661 253 46,672 7.53 7300 1,354 258,332 7.73 8631 992 243,264 9.99 9830 175 45,216 10.60

5666 38 5,880 6.22 7311 32 6,600 8.41 8646 2,083 338,752 6.53 9858 1,514 293,448 7.86

5695 2,606 448,602 6.95 7363 28 2,016 2.74 8647 1,482 282,860 7.79 9893 2,956 537,872 7.37

5742 23 5,784 10.27 7422 3,350 544,386 6.57 8677 197 64,752 13.45 9916 1,245 185,230 5.98

5766 37 2,016 2.05 7431 1,638 456,709 11.43 8696 30 2,016 2.61 9976 2,335 549,337 9.60

5770 3,219 545,182 6.87

Appendix 4–1.1. Number of storms, total duration, and mean storm interevent time defined by 6-hour minimum interevent time for hourly 

rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)
Appendix 4 175

Appendix 4–1.2. Number of storms, total duration, and mean storm interevent time defined by 8-hour minimum interevent time for hourly 

rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

0015 10 624 2.32 1154 242 26,928 4.38 2160 28 4,752 6.70 3463 49 30,096 25.26

0016 3,492 543,665 6.23 1165 665 147,768 9.00 2206 813 105,121 5.13 3476 761 127,848 6.74

0050 1,042 197,240 7.59 1185 397 185,232 19.25 2238 273 51864 7.68 3485 25 1,968 3.04

0054 58 5,688 3.89 1186 125 19,128 6.11 2240 104 12864 4.98 3507 1,178 188,267 6.45

0120 29 1,896 2.36 1188 10 1,872 7.53 2242 1,936 253435 5.18 3546 3,504 485,758 5.51

0145 191 28,392 5.97 1245 36 1,992 1.99 2244 3,689 535994 5.80 3547 219 51,144 9.49

0146 49 5,664 4.52 1246 1,264 176,017 5.61 2247 62 7056 4.51 3579 79 19,944 10.17

0174 1,467 275,194 7.66 1267 524 116,832 9.05 2309 721 153600 8.58 3642 3,374 534,563 6.34

0178 24 2,040 3.37 1304 616 117,840 7.71 2312 746 92757 4.96 3646 2,231 419,874 7.55

0179 336 66,456 8.07 1325 1,519 219,432 5.74 2334 65 22344 14.06 3668 24 2,016 3.10

0202 288 58,398 8.31 1429 1,351 213,741 6.35 2336 236 53256 9.17 3673 31 2,016 2.37

0206 2,730 532,111 7.92 1431 1,922 356,239 7.42 2354 31 20976 27.97 3686 1,236 198,532 6.49

0208 4 384 4.00 1432 1,376 246,787 7.17 2355 59 10536 7.12 3691 3,000 469,594 6.31

0211 3,654 542,494 5.94 1433 2,015 367,055 7.29 2357 556 98496 7.12 3734 33 2,016 2.29

0244 92 11,568 4.89 1434 2,058 358,448 6.97 2360 1,857 399684 8.74 3771 1,528 220,455 5.82

0248 2,060 529,764 10.53 1435 1,211 230,732 7.65 2361 203 56004 11.32 3789 113 18,888 6.79

0262 2,719 431,066 6.34 1436 2,279 367,281 6.40 2394 3,343 504483 6.01 3826 232 45,240 7.86

0271 25 2,016 3.02 1437 27 4,728 7.03 2404 3,066 493624 6.45 3831 436 110,112 10.26

0380 422 163,872 15.91 1438 1,643 284,045 6.91 2415 3,126 501413 6.39 3841 165 77,472 19.36

0394 11 1,992 7.20 1462 0 4,416 -- 2462 1,050 188205 7.21 3871 1,515 317,328 8.45

0408 32 2,112 2.53 1492 1,244 280,441 9.20 2528 125 24840 7.98 3884 23 1,896 3.21

0427 67 11,646 7.03 1500 28 2,112 2.78 2617 264 56688 8.66 3941 74 7,608 3.93

0428 4,404 529,122 4.72 1528 1,433 366,583 10.46 2619 242 64992 10.93 3963 7 1,488 8.86

0429 195 22,416 4.43 1541 66 10,953 6.67 2621 1,298 277864 8.70 4040 471 92,806 7.95

0463 117 51,936 18.23 1569 221 32,160 5.81 2675 1,194 178918 6.01 4058 30 2,016 2.63

0493 18 1,704 3.63 1632 7 1,320 7.86 2676 1,042 146737 5.69 4098 1,826 417,420 9.37

0495 357 138,072 15.91 1641 227 110,280 20.01 2679 2,350 536229 9.30 4100 371 121,992 13.46

0496 27 10,872 16.72 1646 2,525 543,287 8.80 2715 1,854 354131 7.70 4137 1,269 221,233 7.09

0498 12 7,920 27.44 1663 48 11,460 9.69 2744 1,887 413376 8.91 4191 2,551 519,452 8.25

0509 3,173 549,223 6.96 1671 3,440 548,538 6.41 2758 123 23376 7.61 4256 0 21,906 --

0518 2,211 330,777 6.02 1680 1,259 261,792 8.37 2794 11 2064 7.57 4257 3,359 498,651 5.95

0521 35 5,760 6.55 1694 165 45,172 11.19 2797 2,548 529606 8.46 4258 204 25,608 5.02

0556 115 21,936 7.67 1696 1,149 268,080 9.45 2811 2,074 435389 8.54 4278 1,671 409,467 9.94

0569 2,724 399,353 5.88 1697 90 29,496 13.40 2813 30 31728 43.90 4299 129 86,976 27.91

0572 1,096 158,448 5.77 1698 1,411 291,219 8.40 2814 17 12336 30.02 4300 3,055 289,264 3.67

0576 151 23,352 6.17 1720 237 46,709 8.04 2815 264 58942 9.14 4305 2,708 266,616 3.83

0580 364 112,800 12.65 1761 123 16,680 5.40 2818 198 45312 9.28 4307 695 96,430 5.49

0587 959 121,272 4.98 1773 3,716 502,398 5.39 2986 292 54240 7.40 4309 3,843 517,057 5.35

0605 131 27,000 8.34 1810 24 2,112 3.44 3005 2,815 522,908 7.51 4311 3,900 543,389 5.54

0639 2,542 433,077 6.91 1823 25 1,968 3.11 3033 672 216,192 13.22 4313 300 39,432 5.21

0655 0 718 -- 1870 357 47,496 5.19 3034 2 6,888 143.50 4319 105 29,208 11.32

0665 2,217 361,772 6.52 1875 20 1,752 3.46 3047 35 2,016 2.15 4329 3,007 438,183 5.80

0689 1,723 381,486 8.97 1876 52 10,920 8.42 3103 34 29,448 35.90 4331 0 5,112 --

0690 726 179,395 10.15 1889 334 38,734 4.55 3133 2,797 486,379 6.97 4375 1,307 232,138 7.23

0691 2,839 469,381 6.63 1903 378 83,753 9.08 3156 317 63,435 8.09 4392 508 72,624 5.60

0708 148 32,809 9.07 1914 22 1,752 3.04 3171 2,548 463,053 7.29 4425 926 264,416 11.73

0738 1,859 306,512 6.58 1920 491 109,392 9.03 3189 378 97,104 10.51 4440 1,679 283,440 6.74

0776 1,792 439,998 10.02 1921 3,260 476,617 5.83 3260 183 44,448 9.89 4476 1,972 344,677 7.07

0779 463 108,787 9.63 1937 1,300 186,288 5.65 3267 112 22,512 8.10 4498 13 4,944 15.72

0784 1,995 429,972 8.80 1956 3,516 486,210 5.52 3270 1,691 365,659 8.85 4517 1,893 328,752 6.97

0786 576 117,888 8.28 1970 29 1,992 2.60 3272 24 3,840 6.55 4520 1,267 220,430 7.07

0917 2,426 300,936 4.88 2014 527 69,312 5.23 3277 16 4,176 10.65 4525 35 1,992 2.09

0923 27 2,016 2.69 2015 3,791 484,318 5.07 3278 1,061 253,450 9.77 4563 30 2,112 2.66

0926 3,374 551,357 6.56 2019 29 2,016 2.68 3280 166 41,832 10.31 4570 2,471 548,973 9.04

0950 46 18,936 17.03 2024 2,114 391,758 7.46 3281 46 26,304 23.68 4577 2,209 305,664 5.52

0996 30 1,992 2.53 2042 13 16,080 51.41 3283 1,851 247,224 5.26 4591 2,938 431,406 5.81

1013 266 63,492 9.79 2043 94 36,960 16.23 3284 3,115 499,445 6.45 4670 2,704 541,246 8.14

1017 3,047 549,062 7.28 2048 1,832 409,659 9.11 3285 2,479 382,496 6.24 4671 169 25,848 6.18

1042 26 1,488 2.03 2050 80 17,448 8.88 3329 1,740 306,792 7.08 4679 2,769 429,394 6.24

1048 27 1,728 2.49 2051 67 26,304 16.14 3335 232 33,792 5.78 4696 15 1,992 5.37

1053 697 145,392 8.43 2053 10 3,552 14.62 3370 2,028 317,621 6.25 4703 126 31,392 10.16

1057 1,770 363,120 8.28 2073 995 146,832 5.90 3410 2,563 514,264 8.15 4704 434 61,368 5.59

1063 26 1,968 2.85 2082 1,903 519,707 11.20 3415 3,170 537,022 6.84 4731 137 17,160 4.95

1068 2,882 512,393 7.15 2086 2,626 548,518 8.46 3430 4,690 530,963 4.46 4792 1,310 213,141 6.59

1080 209 61,344 12.09 2088 57 10,190 7.20 3431 292 32,784 4.42 4819 315 39,480 4.99

1081 1,326 241,368 7.29 2090 375 58,356 6.29 3441 44 42,816 40.32 4852 17 2,016 4.82

1133 17 2,784 6.46 2096 2,837 493,125 6.99 3442 539 171,216 12.98 4866 3,037 548,790 7.26

1136 4,047 532,054 5.23 2128 360 68,160 7.59 3446 698 213,312 12.53 4876 146 29,184 8.11

1138 21 1,320 2.40 2131 2,462 483,317 7.98 3460 44 7,008 6.40 4878 2,969 350,328 4.63

1139 101 13,056 5.06 2142 20 2,016 3.83 3462 152 49,920 13.42 4880 2,788 551,284 8.02

Appendix 4–1.2. Number of storms, total duration, and mean storm interevent time defined by 8-hour minimum interevent time for hourly 

rainfall stations in Texas.

[--, not available] 
176 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

4920 2,172 524,353 9.85 5775 14 5112 15.00 7481 1,548 495,877 13.16 8743 3,795 527995 5.52

4934 8 1,992 10.18 5779 22 5880 10.77 7497 1,557 243,992 6.33 8761 1,076 256,990 9.78

4972 2,772 494,452 7.20 5840 394 78888 8.04 7498 318 49,632 6.30 8778 2,815 398,041 5.66

4973 486 119,208 9.93 5890 2,582 515614 8.09 7499 2,576 523,925 8.27 8845 3,339 550,655 6.63

4974 1,397 340,313 9.93 5891 170 53304 12.85 7531 150 49,968 13.56 8859 2,143 312,504 5.77

4975 1,830 257,716 5.65 5897 1,600 245324 6.20 7534 348 103,032 12.10 8898 733 116,904 6.34

4978 157 47,496 12.39 5957 2,439 445446 7.40 7556 2,961 493,793 6.73 8908 43 5,904 5.46

4979 22 1,896 3.13 5958 219 41136 7.58 7594 2,254 309,414 5.45 8910 22 1,968 3.53

4982 1,126 248,714 8.95 5973 118 23376 7.96 7596 174 26,136 6.00 8911 960 164,256 6.91

5018 763 134,338 7.06 5996 3,219 549087 6.86 7608 1,782 249,648 5.60 8924 465 181,152 16.07

5048 1,742 503,770 11.87 6017 140 23280 6.70 7622 22 4,152 7.69 8929 26 2,016 2.93

5049 103 34,272 13.72 6024 281 72480 10.44 7700 2,532 308,448 4.78 8942 2,335 300,835 5.14

5056 5 10,104 83.94 6050 20 6,576 13.36 7706 2,288 502,063 8.94 8944 1,309 144,888 4.36

5057 1,019 189,960 7.51 6104 2,774 478,193 7.01 7718 113 34,320 12.38 8996 3,129 399,638 5.06

5060 313 59,904 7.70 6108 3,360 542,529 6.48 7745 440 70,872 6.35 9014 23 1,896 3.08

5081 1,383 180,720 5.12 6136 2,386 539,302 9.26 7922 339 111,768 13.56 9037 733 240,720 13.46

5094 2,953 468,823 6.40 6166 98 14,520 5.94 7936 2,461 306,666 4.95 9106 217 65,736 12.40

5113 2,848 523,501 7.43 6176 420 69,264 6.57 7943 2,840 474,742 6.72 9107 40 26,784 27.76

5114 0 1,488 -- 6177 2,930 440,385 6.02 7944 84 8,592 3.99 9129 121 23,376 7.82

5123 16 3,072 7.78 6210 2,368 354,217 6.01 7945 4,454 543,166 4.80 9163 2,487 550,742 8.99

5192 1,879 332,072 7.12 6211 535 93,000 7.02 7947 270 49,618 7.42 9213 258 38,700 5.96

5193 3,590 550,050 6.13 6270 1,969 256,135 5.20 7948 1,146 213,840 7.54 9214 33 2,016 2.27

5224 389 52,608 5.37 6275 0 2,920 -- 7951 1,101 141,648 5.08 9222 243 31,416 5.08

5228 447 79,632 7.18 6276 28 2,016 2.67 7953 133 23,352 7.04 9248 137 52,272 15.63

5235 33 4,392 5.23 6335 2,485 354,128 5.66 7981 250 112,728 18.55 9266 83 17,160 8.34

5247 2,779 552,074 8.08 6434 23 8,016 14.25 7990 143 23,304 6.52 9270 1,830 382,084 8.55

5258 963 177,528 7.40 6504 2,525 548,140 8.86 7992 28 1,896 2.59 9295 115 27,672 9.86

5303 710 179,592 10.28 6558 32 5,688 7.12 7997 125 34,656 11.34 9304 4 336 3.50

5312 1,997 404,451 8.25 6615 706 194,104 11.29 7999 19 13,992 30.45 9307 275 79272 11.75

5341 29 2,016 2.59 6660 123 32,880 10.84 8022 74 48,504 27.07 9328 187 34344 7.38

5342 0 4,404 -- 6663 113 36,168 13.16 8023 1,715 484,077 11.56 9329 16 3240 8.10

5348 1,756 240,206 5.47 6734 410 102,262 10.14 8047 2,624 548,776 8.49 9345 3 960 13.33

5358 1,560 387,072 10.11 6736 1,898 452,975 9.76 8060 140 23,376 6.68 9363 1,140 135816 4.72

5398 2,986 411,020 5.44 6740 17 2,016 4.44 8062 45 6,504 5.70 9364 3,882 418894 4.25

5410 2,460 528,181 8.76 6750 281 37,990 5.38 8068 39 21,192 22.44 9365 38 5664 6.00

5411 2,881 462,238 6.44 6757 4,044 551,361 5.42 8081 2,814 537,081 7.71 9371 160 31416 7.90

5424 486 56,254 4.49 6775 604 110,784 7.38 8089 43 5,760 5.33 9417 2,163 331982 6.13

5429 1,098 193,392 7.09 6776 2,315 431,190 7.56 8221 21 1,896 3.32 9419 4,206 542606 5.09

5431 18 13,848 31.61 6788 191 29,256 6.13 8252 1,940 529,928 11.18 9435 83 33600 16.63

5461 1,952 324,672 6.62 6792 1,742 419,078 9.88 8265 1,763 217,176 4.82 9491 2,967 443170 5.98

5463 1,289 224790 7.06 6794 29 2,016 2.51 8289 55 36,528 27.38 9499 1,947 431095 9.04

5471 27 3480 5.28 6834 2,295 317,594 5.55 8305 1,804 512,439 11.68 9522 17 2016 4.59

5477 25 1992 3.08 6893 1,347 374,777 11.43 8335 1,806 259,728 5.67 9527 2,371 539410 9.31

5528 1,317 262609 8.05 6935 1,938 406,635 8.58 8400 239 62,112 10.65 9532 3,024 484263 6.45

5579 1 696 29.00 6981 207 132,768 26.47 8445 1,409 206,856 5.83 9544 5 2928 24.27

5580 29 1944 2.59 7020 146 21,432 5.77 8446 1,987 268,785 5.42 9565 1,591 352743 9.03

5589 181 37872 8.56 7060 1,048 277,917 10.87 8451 282 71,544 10.32 9570 550 100848 7.48

5590 185 39024 8.56 7066 3,348 470,310 5.59 8531 1,717 305,116 7.13 9574 25 2856 4.61

5591 693 170232 10.05 7074 2,225 523,667 9.63 8541 111 22,615 8.21 9588 2,218 457802 8.37

5592 591 151920 10.53 7097 121 29,232 9.80 8544 563 110,871 7.94 9665 3,518 548295 6.25

5594 177 68448 15.95 7116 646 167,304 10.55 8545 22 4,656 8.51 9715 2,863 443326 6.21

5595 2 8016 167.00 7140 2,760 395,594 5.73 8563 1,375 220,484 6.48 9729 3,741 549310 5.85

5596 1,384 292949 8.69 7173 1,210 115,200 3.70 8566 583 143,616 10.07 9772 1,093 140832 5.12

5600 452 105888 9.55 7174 5,042 474,094 3.65 8583 948 203,370 8.76 9814 38 13030 13.96

5618 37 2112 2.13 7213 838 156,336 7.50 8584 1,457 344,280 9.62 9815 785 121848 6.19

5650 20 1896 3.69 7243 3,063 549,034 7.26 8623 1,753 319,544 7.38 9816 80 35472 18.24

5656 1,753 326279 7.59 7262 105 27,360 10.73 8625 1,398 243,840 6.97 9817 1,548 356901 9.41

5658 945 209400 8.97 7274 459 121,725 10.82 8630 821 226,383 11.27 9829 1,609 436603 11.12

5661 240 46672 7.92 7300 1,302 258,332 8.03 8631 939 243,264 10.54 9830 165 45216 11.23

5666 36 5880 6.55 7311 32 6,600 8.41 8646 1,979 338,752 6.86 9858 1,450 293448 8.19

5695 2,452 448602 7.36 7363 28 2,016 2.74 8647 1,413 282860 8.16 9893 2,790 537872 7.79

5742 21 5784 11.22 7422 3,169 544,386 6.93 8677 183 64,752 14.46 9916 1,166 185230 6.36

5766 34 2016 2.21 7431 1,562 456,709 11.97 8696 29 2,016 2.69 9976 2,181 549337 10.26

5770 3,038 545182 7.26

Appendix 4–1.2. Number of storms, total duration, and mean storm interevent time defined by 8-hour minimum interevent time for hourly 

rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)
Appendix 4 177

Appendix 4–1.3. Number of storms, total duration, and mean storm interevent time defined by 12-hour minimum interevent time for 

hourly rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

0015 7 624 3.14 1154 215 26,928 4.87 2160 23 4,752 8.04 3463 48 30,096 25.78

0016 3,189 543,665 6.78 1165 612 147,768 9.74 2206 759 105,121 5.47 3476 709 127,848 7.21

0050 965 197,240 8.16 1185 379 185,232 20.15 2238 252 51,864 8.29 3485 22 1,968 3.38

0054 53 5,688 4.22 1186 117 19,128 6.50 2240 94 12,864 5.46 3507 1,078 188,267 7.02

0120 22 1,896 2.99 1188 10 1,872 7.53 2242 1,745 253,435 5.70 3546 3,210 485,758 5.98

0145 179 28,392 6.33 1245 27 1,992 2.50 2244 3,345 535,994 6.35 3547 202 51,144 10.25

0146 44 5,664 4.99 1246 1,140 176,017 6.18 2247 57 7,056 4.87 3579 77 19,944 10.42

0174 1,356 275,194 8.26 1267 484 116,832 9.77 2309 662 153,600 9.31 3642 3,115 534,563 6.84

0178 22 2,040 3.62 1304 561 117,840 8.42 2312 679 92,757 5.41 3646 2,106 419,874 7.97

0179 321 66,456 8.43 1325 1,392 219,432 6.23 2334 60 22,344 15.19 3668 20 2,016 3.65

0202 269 58,398 8.87 1429 1,254 213,741 6.81 2336 226 53,256 9.56 3673 25 2,016 2.83

0206 2,505 532,111 8.59 1431 1,766 356,239 8.04 2354 27 20,976 32.06 3686 1,122 198,532 7.11

0208 3 384 5.33 1432 1,283 246,787 7.66 2355 54 10,536 7.75 3691 2,764 469,594 6.81

0211 3,334 542,494 6.47 1433 1,849 367,055 7.91 2357 512 98,496 7.70 3734 28 2,016 2.61

0244 80 11,568 5.56 1434 1,907 358,448 7.49 2360 1,690 399,684 9.56 3771 1,418 220,455 6.24

0248 1,915 529,764 11.30 1435 1,127 230,732 8.19 2361 186 56,004 12.32 3789 105 18,888 7.28

0262 2,499 431,066 6.87 1436 2,106 367,281 6.89 2394 3,092 504,483 6.46 3826 212 45,240 8.57

0271 22 2,016 3.36 1437 23 4,728 8.19 2404 2,821 493,624 6.98 3831 402 110,112 11.10

0380 402 163,872 16.68 1438 1,509 284,045 7.48 2415 2,881 501,413 6.90 3841 152 77,472 20.98

0394 9 1,992 8.71 1462 0 4,416 -- 2462 979 188,205 7.70 3871 1,377 317,328 9.26

0408 27 2,112 2.91 1492 1,132 280,441 10.08 2528 116 24,840 8.57 3884 21 1,896 3.48

0427 57 11,646 8.20 1500 27 2,112 2.87 2617 244 56,688 9.34 3941 64 7,608 4.49

0428 3,936 529,122 5.23 1528 1,323 366,583 11.29 2619 220 64,992 11.98 3963 7 1,488 8.86

0429 174 22,416 4.92 1541 62 10,953 7.08 2621 1,212 277,864 9.28 4040 448 92,806 8.34

0463 115 51,936 18.54 1569 200 32,160 6.38 2675 1,109 178,918 6.44 4058 26 2,016 2.97

0493 17 1,704 3.82 1632 7 1,320 7.86 2676 959 146,737 6.15 4098 1,683 417,420 10.13

0495 341 138,072 16.64 1641 214 110,280 21.20 2679 2,134 536,229 10.20 4100 344 121,992 14.49

0496 27 10,872 16.72 1646 2,356 543,287 9.40 2715 1,717 354,131 8.28 4137 1,149 221,233 7.78

0498 12 7,920 27.44 1663 42 11,460 11.02 2744 1,724 413,376 9.71 4191 2,343 519,452 8.95

0509 2,856 549,223 7.69 1671 3,150 548,538 6.96 2758 110 23,376 8.47 4256 0 21,906 --

0518 2,037 330,777 6.50 1680 1,169 261,792 8.99 2794 11 2,064 7.54 4257 3,066 498,651 6.48

0521 33 5,760 6.92 1694 146 45,172 12.59 2797 2,370 529,606 9.07 4258 182 25,608 5.58

0556 111 21,936 7.93 1696 1,080 268,080 10.03 2811 1,910 435,389 9.24 4278 1,555 409,467 10.66

0569 2,517 399,353 6.33 1697 85 29,496 14.17 2813 27 31,728 48.74 4299 125 86,976 28.79

0572 1,017 158,448 6.19 1698 1,293 291,219 9.13 2814 17 12,336 30.02 4300 2,768 289,264 4.01

0576 131 23,352 7.05 1720 216 46,709 8.78 2815 247 58,942 9.74 4305 2,438 266,616 4.21

0580 338 112,800 13.59 1761 111 16,680 5.93 2818 184 45,312 9.96 4307 609 96,430 6.21

0587 872 121,272 5.43 1773 3,387 502,398 5.88 2986 267 54,240 8.06 4309 3,564 517,057 5.74

0605 120 27,000 9.07 1810 24 2,112 3.42 3005 2,623 522,908 8.03 4311 3,587 543,389 5.99

0639 2,358 433,077 7.42 1823 23 1,968 3.33 3033 646 216,192 13.73 4313 266 39,432 5.82

0655 0 718 -- 1870 340 47,496 5.43 3034 2 6,888 143.50 4319 98 29,208 12.10

0665 2,070 361,772 6.95 1875 17 1,752 4.01 3047 34 2,016 2.20 4329 2,770 438,183 6.26

0689 1,576 381,486 9.77 1876 49 10,920 8.91 3103 33 29,448 36.97 4331 0 5,112 --

0690 671 179,395 10.95 1889 268 38,734 5.58 3133 2,583 486,379 7.51 4375 1,187 232,138 7.92

0691 2,667 469,381 7.03 1903 349 83,753 9.81 3156 285 63,435 8.95 4392 458 72,624 6.16

0708 135 32,809 9.90 1914 20 1,752 3.29 3171 2,369 463,053 7.82 4425 856 264,416 12.65

0738 1,716 306,512 7.09 1920 456 109,392 9.69 3189 345 97,104 11.48 4440 1,544 283,440 7.30

0776 1,669 439,998 10.73 1921 3,003 476,617 6.30 3260 169 44,448 10.68 4476 1,805 344,677 7.69

0779 441 108,787 10.09 1937 1,187 186,288 6.16 3267 107 22,512 8.46 4498 11 4,944 18.51

0784 1,846 429,972 9.48 1956 3,262 486,210 5.91 3270 1,552 365,659 9.61 4517 1,735 328,752 7.57

0786 524 117,888 9.06 1970 24 1,992 3.04 3272 23 3,840 6.82 4520 1,144 220,430 7.79

0917 2,251 300,936 5.23 2014 479 69,312 5.72 3277 15 4,176 11.32 4525 30 1,992 2.36

0923 27 2,016 2.67 2015 3,428 484,318 5.57 3278 1,001 253,450 10.33 4563 28 2,112 2.82

0926 3,112 551,357 7.08 2019 25 2,016 3.03 3280 158 41,832 10.81 4570 2,269 548,973 9.81

0950 45 18,936 17.40 2024 1,944 391,758 8.08 3281 45 26,304 24.20 4577 2,048 305,664 5.92

0996 24 1,992 3.04 2042 12 16,080 55.66 3283 1,671 247,224 5.79 4591 2,707 431,406 6.27

1013 245 63,492 10.60 2043 86 36,960 17.70 3284 2,856 499,445 7.00 4670 2,484 541,246 8.82

1017 2,775 549,062 7.96 2048 1,690 409,659 9.84 3285 2,243 382,496 6.85 4671 148 25,848 6.99

1042 20 1,488 2.52 2050 70 17,448 10.08 3329 1,595 306,792 7.69 4679 2,505 429,394 6.86

1048 27 1,728 2.49 2051 65 26,304 16.62 3335 208 33,792 6.40 4696 14 1,992 5.76

1053 633 145,392 9.24 2053 10 3,552 14.62 3370 1,897 317,621 6.65 4703 121 31,392 10.56

1057 1,643 363,120 8.89 2073 919 146,832 6.36 3410 2,356 514,264 8.84 4704 397 61,368 6.07

1063 22 1,968 3.28 2082 1,789 519,707 11.89 3415 2,884 537,022 7.48 4731 124 17,160 5.42

1068 2,649 512,393 7.75 2086 2,406 548,518 9.20 3430 4,192 530,963 4.94 4792 1,195 213,141 7.19

1080 193 61,344 13.06 2088 49 10,190 8.31 3431 246 32,784 5.16 4819 288 39,480 5.42

1081 1,229 241,368 7.83 2090 349 58,356 6.73 3441 41 42,816 43.24 4852 16 2,016 5.10

1133 16 2,784 6.84 2096 2,614 493,125 7.55 3442 499 171,216 13.99 4866 2,803 548,790 7.84

1136 3,650 532,054 5.76 2128 323 68,160 8.41 3446 654 213,312 13.34 4876 137 29,184 8.62

1138 19 1,320 2.61 2131 2,250 483,317 8.69 3460 41 7,008 6.84 4878 2,716 350,328 5.02

1139 89 13,056 5.69 2142 19 2,016 4.01 3462 144 49,920 14.14 4880 2,595 551,284 8.59

Appendix 4–1.3. Number of storms, total duration, and mean storm interevent time defined by 12-hour minimum interevent time for 

hourly rainfall stations in Texas.

[--, not available]
178 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

4920 2,036 524,353 10.48 5775 13 5,112 16.12 7481 1,448 495,877 14.04 8743 3,466 527,995 6.01

4934 7 1,992 11.53 5779 19 5,880 12.39 7497 1,406 243,992 6.97 8761 1,007 256,990 10.42

4972 2,552 494,452 7.78 5840 355 78,888 8.88 7498 295 49,632 6.76 8778 2,557 398,041 6.19

4973 446 119,208 10.79 5890 2,354 515,614 8.84 7499 2,349 523,925 9.03 8845 2,985 550,655 7.37

4974 1,289 340,313 10.73 5891 159 53,304 13.71 7531 139 49,968 14.60 8859 1,987 312,504 6.19

4975 1,674 257,716 6.14 5897 1,455 245,324 6.77 7534 320 103,032 13.12 8898 674 116,904 6.86

4978 143 47,496 13.56 5957 2,261 445,446 7.95 7556 2,729 493,793 7.27 8908 36 5,904 6.47

4979 21 1,896 3.26 5958 199 41,136 8.30 7594 2,115 309,414 5.79 8910 20 1,968 3.85

4982 1,052 248,714 9.56 5973 106 23,376 8.81 7596 167 26,136 6.23 8911 904 164,256 7.31

5018 709 134,338 7.57 5996 2,931 549,087 7.49 7608 1,644 249,648 6.03 8924 439 181,152 17.00

5048 1,614 503,770 12.78 6017 131 23,280 7.14 7622 22 4,152 7.69 8929 22 2,016 3.38

5049 99 34,272 14.26 6024 258 72,480 11.33 7700 2,311 308,448 5.20 8942 2,131 300,835 5.59

5056 5 10,104 83.94 6050 20 6,576 13.36 7706 2,086 502,063 9.77 8944 1,205 144,888 4.70

5057 941 189,960 8.10 6104 2,586 478,193 7.49 7718 102 34,320 13.68 8996 2,924 399,638 5.39

5060 294 59,904 8.17 6108 3,086 542,529 7.02 7745 395 70,872 7.04 9014 23 1,896 3.08

5081 1,270 180,720 5.54 6136 2,211 539,302 9.96 7922 319 111,768 14.39 9037 693 240,720 14.21

5094 2,691 468,823 6.98 6166 92 14,520 6.30 7936 2,277 306,666 5.32 9106 201 65,736 13.35

5113 2,559 523,501 8.23 6176 390 69,264 7.04 7943 2,606 474,742 7.29 9107 35 26,784 31.67

5114 0 1,488 -- 6177 2,669 440,385 6.57 7944 76 8,592 4.37 9129 109 23,376 8.63

5123 15 3,072 8.27 6210 2,184 354,217 6.48 7945 3,982 543,166 5.32 9163 2,301 550,742 9.69

5192 1,724 332,072 7.72 6211 483 93,000 7.73 7947 249 49,618 8.01 9213 224 38,700 6.80

5193 3,265 550,050 6.71 6270 1,804 256,135 5.64 7948 1,060 213,840 8.12 9214 30 2,016 2.46

5224 348 52,608 5.96 6275 0 2,920 -- 7951 1,028 141,648 5.41 9222 210 31,416 5.83

5228 433 79,632 7.40 6276 24 2,016 3.05 7953 121 23,352 7.70 9248 128 52,272 16.70

5235 30 4,392 5.71 6335 2,302 354,128 6.08 7981 230 112,728 20.13 9266 74 17,160 9.31

5247 2,556 552,074 8.75 6434 19 8,016 17.16 7990 130 23,304 7.13 9270 1,710 382,084 9.12

5258 883 177,528 8.03 6504 2,317 548,140 9.62 7992 23 1,896 3.08 9295 105 27,672 10.75

5303 651 179,592 11.17 6558 30 5,688 7.57 7997 120 34,656 11.79 9304 4 336 3.50

5312 1,826 404,451 8.99 6615 648 194,104 12.27 7999 19 13,992 30.45 9307 254 79,272 12.69

5341 27 2,016 2.76 6660 112 32,880 11.86 8022 68 48,504 29.42 9328 178 34,344 7.73

5342 0 4,404 -- 6663 103 36,168 14.41 8023 1,592 484,077 12.43 9329 15 3,240 8.62

5348 1,595 240,206 5.98 6734 374 102,262 11.08 8047 2,416 548,776 9.19 9345 2 960 20.00

5358 1,456 387,072 10.80 6736 1,764 452,975 10.47 8060 128 23,376 7.27 9363 1,024 135,816 5.21

5398 2,765 411,020 5.85 6740 15 2,016 4.98 8062 41 6,504 6.23 9364 3,509 418,894 4.66

5410 2,293 528,181 9.37 6750 245 37,990 6.10 8068 36 21,192 24.28 9365 34 5,664 6.66

5411 2,636 462,238 7.00 6757 3,712 551,361 5.86 8081 2,584 537,081 8.36 9371 147 31,416 8.56

5424 426 56,254 5.07 6775 554 110,784 8.02 8089 40 5,760 5.71 9417 2,009 331,982 6.57

5429 1,015 193,392 7.64 6776 2,149 431,190 8.12 8221 19 1,896 3.63 9419 3,820 542,606 5.57

5431 16 13,848 35.51 6788 173 29,256 6.73 8252 1,799 529,928 12.03 9435 77 33,600 17.90

5461 1,787 324,672 7.20 6792 1,650 419,078 10.41 8265 1,637 217,176 5.16 9491 2,716 443,170 6.49

5463 1,191 224,790 7.61 6794 25 2,016 2.82 8289 53 36,528 28.40 9499 1,784 431,095 9.83

5471 25 3,480 5.66 6834 2,122 317,594 5.97 8305 1,697 512,439 12.39 9522 15 2,016 5.15

5477 24 1,992 3.18 6893 1,268 374,777 12.12 8335 1,664 259,728 6.12 9527 2,156 539,410 10.20

5528 1,228 262,609 8.60 6935 1,801 406,635 9.20 8400 216 62,112 11.74 9532 2,788 484,263 6.97

5579 1 696 29.00 6981 192 132,768 28.51 8445 1,314 206,856 6.22 9544 5 2,928 24.27

5580 27 1,944 2.73 7020 127 21,432 6.57 8446 1,826 268,785 5.87 9565 1,473 352,743 9.72

5589 172 37,872 8.99 7060 958 277,917 11.86 8451 259 71,544 11.20 9570 512 100,848 8.00

5590 170 39,024 9.27 7066 3,052 470,310 6.09 8531 1,597 305,116 7.63 9574 22 2,856 5.18

5591 656 170,232 10.60 7074 2,077 523,667 10.28 8541 102 22,615 8.90 9588 2,030 457,802 9.11

5592 545 151,920 11.38 7097 111 29,232 10.65 8544 524 110,871 8.50 9665 3,246 548,295 6.74

5594 171 68,448 16.50 7116 608 167,304 11.19 8545 20 4,656 9.31 9715 2,640 443,326 6.70

5595 2 8,016 167.00 7140 2,542 395,594 6.19 8563 1,245 220,484 7.12 9729 3,406 549,310 6.38

5596 1,282 292,949 9.35 7173 1,101 115,200 4.02 8566 559 143,616 10.48 9772 1,016 140,832 5.48

5600 424 105,888 10.16 7174 4,518 474,094 4.02 8583 856 203,370 9.66 9814 35 13,030 15.13

5618 33 2,112 2.34 7213 776 156,336 8.07 8584 1,335 344,280 10.47 9815 728 121,848 6.64

5650 19 1,896 3.86 7243 2,800 549,034 7.90 8623 1,605 319,544 8.02 9816 74 35,472 19.69

5656 1,591 326,279 8.33 7262 102 27,360 11.03 8625 1,298 243,840 7.48 9817 1,424 356,901 10.20

5658 876 209,400 9.64 7274 431 121,725 11.50 8630 782 226,383 11.81 9829 1,490 436,603 11.97

5661 221 46,672 8.57 7300 1,221 258,332 8.54 8631 860 243,264 11.48 9830 156 45,216 11.85

5666 35 5,880 6.72 7311 30 6,600 8.94 8646 1,854 338,752 7.30 9858 1,373 293,448 8.63

5695 2,279 448,602 7.89 7363 27 2,016 2.82 8647 1,285 282,860 8.94 9893 2,580 537,872 8.40

5742 19 5,784 12.37 7422 2,899 544,386 7.54 8677 167 64,752 15.81 9916 1,079 185,230 6.84

5766 30 2,016 2.44 7431 1,475 456,709 12.65 8696 26 2,016 2.94 9976 2,015 549,337 11.08

5770 2,812 545,182 7.81

Appendix 4–1.3. Number of storms, total duration, and mean storm interevent time defined by 12-hour minimum interevent time for 

hourly rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)
Appendix 4 179

Appendix 4–1.4. Number of storms, total duration, and mean storm interevent time defined by 18-hour minimum interevent time for 

hourly rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

0015 7 624 3.14 1154 185 26,928 5.55 2160 22 4,752 8.40 3463 44 30,096 28.07

0016 2,882 543,665 7.44 1165 566 147,768 10.49 2206 697 105,121 5.90 3476 643 127,848 7.88

0050 900 197,240 8.71 1185 361 185,232 21.13 2238 219 51,864 9.45 3485 22 1,968 3.38

0054 48 5,688 4.59 1186 100 19,128 7.50 2240 81 12,864 6.24 3507 975 188,267 7.69

0120 17 1,896 3.69 1188 8 1,872 9.16 2242 1,582 253,435 6.23 3546 2,921 485,758 6.52

0145 155 28,392 7.21 1245 22 1,992 3.00 2244 2,991 535,994 7.03 3547 192 51,144 10.75

0146 41 5,664 5.31 1246 1,021 176,017 6.83 2247 48 7,056 5.65 3579 71 19,944 11.26

0174 1,217 275,194 9.13 1267 448 116,832 10.50 2309 596 153,600 10.28 3642 2,837 534,563 7.45

0178 18 2,040 4.34 1304 502 117,840 9.34 2312 607 92,757 5.98 3646 1,931 419,874 8.64

0179 292 66,456 9.20 1325 1,249 219,432 6.87 2334 55 22,344 16.52 3668 18 2,016 3.99

0202 247 58,398 9.60 1429 1,119 213,741 7.56 2336 208 53,256 10.34 3673 22 2,016 3.14

0206 2,277 532,111 9.40 1431 1,598 356,239 8.82 2354 25 20,976 34.58 3686 1,012 198,532 7.82

0208 3 384 5.33 1432 1,162 246,787 8.39 2355 46 10,536 9.01 3691 2,509 469,594 7.44

0211 3,059 542,494 7.00 1433 1,688 367,055 8.60 2357 466 98,496 8.40 3734 23 2,016 3.05

0244 69 11,568 6.35 1434 1,724 358,448 8.23 2360 1,490 399,684 10.77 3771 1,297 220,455 6.77

0248 1,775 529,764 12.15 1435 1,024 230,732 8.95 2361 170 56,004 13.41 3789 96 18,888 7.89

0262 2,268 431,066 7.50 1436 1,915 367,281 7.52 2394 2,835 504,483 7.00 3826 203 45,240 8.92

0271 17 2,016 4.20 1437 22 4,728 8.53 2404 2,587 493,624 7.56 3831 360 110,112 12.32

0380 372 163,872 17.98 1438 1,375 284,045 8.16 2415 2,629 501,413 7.51 3841 141 77,472 22.57

0394 8 1,992 9.73 1462 0 4,416 -- 2462 888 188,205 8.43 3871 1,258 317,328 10.08

0408 24 2,112 3.20 1492 1,023 280,441 11.09 2528 106 24,840 9.33 3884 20 1,896 3.63

0427 49 11,646 9.44 1500 24 2,112 3.15 2617 227 56,688 9.99 3941 56 7,608 5.04

0428 3,500 529,122 5.81 1528 1,218 366,583 12.22 2619 207 64,992 12.70 3963 6 1,488 10.19

0429 151 22,416 5.58 1541 57 10,953 7.64 2621 1,115 277,864 10.04 4040 416 92,806 8.94

0463 106 51,936 20.06 1569 168 32,160 7.48 2675 1,008 178,918 7.03 4058 20 2,016 3.67

0493 16 1,704 3.98 1632 7 1,320 7.73 2676 871 146,737 6.71 4098 1,546 417,420 10.98

0495 314 138,072 18.02 1641 195 110,280 23.21 2679 1,938 536,229 11.18 4100 324 121,992 15.35

0496 27 10,872 16.72 1646 2,145 543,287 10.27 2715 1,590 354,131 8.90 4137 1,046 221,233 8.49

0498 11 7,920 29.87 1663 37 11,460 12.42 2744 1,604 413,376 10.39 4191 2,134 519,452 9.77

0509 2,593 549,223 8.40 1671 2,833 548,538 7.68 2758 101 23,376 9.17 4256 0 21,906 --

0518 1,863 330,777 7.05 1680 1,070 261,792 9.77 2794 11 2,064 7.54 4257 2,773 498,651 7.11

0521 32 5,760 7.12 1694 137 45,172 13.38 2797 2,170 529,606 9.85 4258 162 25,608 6.20

0556 100 21,936 8.74 1696 992 268,080 10.87 2811 1,740 435,389 10.08 4278 1,446 409,467 11.41

0569 2,268 399,353 6.96 1697 83 29,496 14.49 2813 22 31,728 59.73 4299 118 86,976 30.46

0572 914 158,448 6.82 1698 1,162 291,219 10.09 2814 16 12,336 31.81 4300 2,423 289,264 4.50

0576 119 23,352 7.70 1720 199 46,709 9.48 2815 230 58,942 10.41 4305 2,148 266,616 4.70

0580 312 112,800 14.67 1761 97 16,680 6.68 2818 172 45,312 10.61 4307 529 96,430 7.05

0587 789 121,272 5.94 1773 3,059 502,398 6.44 2986 244 54,240 8.77 4309 3,263 517,057 6.21

0605 110 27,000 9.84 1810 22 2,112 3.68 3005 2,396 522,908 8.73 4311 3,272 543,389 6.51

0639 2,146 433,077 8.09 1823 21 1,968 3.58 3033 621 216,192 14.26 4313 236 39,432 6.49

0655 0 718 -- 1870 307 47,496 5.95 3034 2 6,888 143.50 4319 85 29,208 13.86

0665 1,900 361,772 7.52 1875 16 1,752 4.18 3047 23 2,016 2.99 4329 2,533 438,183 6.79

0689 1,443 381,486 10.61 1876 43 10,920 10.09 3103 28 29,448 43.46 4331 0 5,112 --

0690 615 179,395 11.89 1889 229 38,734 6.43 3133 2,368 486,379 8.14 4375 1,061 232,138 8.79

0691 2,464 469,381 7.56 1903 322 83,753 10.57 3156 252 63,435 10.05 4392 417 72,624 6.71

0708 125 32,809 10.64 1914 19 1,752 3.44 3171 2,169 463,053 8.48 4425 780 264,416 13.83

0738 1,578 306,512 7.66 1920 416 109,392 10.57 3189 319 97,104 12.37 4440 1,415 283,440 7.91

0776 1,564 439,998 11.41 1921 2,732 476,617 6.86 3260 155 44,448 11.59 4476 1,645 344,677 8.37

0779 395 108,787 11.20 1937 1,101 186,288 6.59 3267 100 22,512 9.01 4498 11 4,944 18.51

0784 1,696 429,972 10.26 1956 2,963 486,210 6.45 3270 1,431 365,659 10.37 4517 1,575 328,752 8.28

0786 481 117,888 9.82 1970 22 1,992 3.26 3272 19 3,840 8.09 4520 1,035 220,430 8.54

0917 2,045 300,936 5.70 2014 420 69,312 6.43 3277 14 4,176 12.14 4525 21 1,992 3.13

0923 23 2,016 3.03 2015 3,007 484,318 6.26 3278 931 253,450 11.06 4563 26 2,112 2.99

0926 2,834 551,357 7.71 2019 20 2,016 3.63 3280 150 41,832 11.35 4570 2,070 548,973 10.70

0950 43 18,936 18.17 2024 1,779 391,758 8.77 3281 43 26,304 25.30 4577 1,880 305,664 6.40

0996 20 1,992 3.53 2042 10 16,080 66.67 3283 1,487 247,224 6.43 4591 2,445 431,406 6.88

1013 224 63,492 11.54 2043 80 36,960 18.99 3284 2,555 499,445 7.76 4670 2,255 541,246 9.66

1017 2,524 549,062 8.69 2048 1,545 409,659 10.71 3285 2,025 382,496 7.53 4671 134 25,848 7.64

1042 18 1,488 2.70 2050 60 17,448 11.65 3329 1,431 306,792 8.50 4679 2,262 429,394 7.53

1048 24 1,728 2.70 2051 61 26,304 17.67 3335 187 33,792 7.05 4696 12 1,992 6.58

1053 567 145,392 10.25 2053 10 3,552 14.62 3370 1,769 317,621 7.09 4703 109 31,392 11.65

1057 1,523 363,120 9.55 2073 837 146,832 6.92 3410 2,151 514,264 9.62 4704 350 61,368 6.80

1063 19 1,968 3.71 2082 1,673 519,707 12.67 3415 2,596 537,022 8.25 4731 109 17,160 6.09

1068 2,425 512,393 8.41 2086 2,193 548,518 10.04 3430 3,704 530,963 5.51 4792 1,076 213,141 7.92

1080 171 61,344 14.65 2088 47 10,190 8.65 3431 211 32,784 5.90 4819 263 39,480 5.88

1081 1,132 241,368 8.45 2090 312 58,356 7.46 3441 37 42,816 47.84 4852 16 2,016 5.10

1133 14 2,784 7.71 2096 2,372 493,125 8.27 3442 463 171,216 15.03 4866 2,583 548,790 8.45

1136 3,178 532,054 6.52 2128 288 68,160 9.36 3446 623 213,312 13.98 4876 122 29,184 9.61

1138 17 1,320 2.85 2131 2,028 483,317 9.58 3460 36 7,008 7.71 4878 2,433 350,328 5.54

1139 77 13,056 6.48 2142 16 2,016 4.65 3462 128 49,920 15.84 4880 2,391 551,284 9.27

Appendix 4–1.4. Number of storms, total duration, and mean storm interevent time defined by 18-hour minimum interevent time for 

hourly rainfall stations in Texas.

[--, not available]
180 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

4920 1,835 524,353 11.57 5775 12 5,112 17.54 7481 1,351 495,877 15.00 8743 3,146 527,995 6.56

4934 7 1,992 11.53 5779 19 5,880 12.39 7497 1,259 243,992 7.71 8761 924 256,990 11.31

4972 2,328 494,452 8.47 5840 332 78,888 9.45 7498 267 49,632 7.41 8778 2,297 398,041 6.83

4973 401 119,208 11.93 5890 2,146 515,614 9.64 7499 2,133 523,925 9.89 8845 2,671 550,655 8.17

4974 1,175 340,313 11.71 5891 152 53,304 14.32 7531 125 49,968 16.17 8859 1,789 312,504 6.81

4975 1,523 257,716 6.69 5897 1,304 245,324 7.49 7534 294 103,032 14.23 8898 621 116,904 7.39

4978 133 47,496 14.54 5957 2,077 445,446 8.61 7556 2,500 493,793 7.89 8908 31 5,904 7.42

4979 18 1,896 3.70 5958 176 41,136 9.31 7594 1,935 309,414 6.27 8910 20 1,968 3.82

4982 979 248,714 10.23 5973 90 23,376 10.27 7596 157 26,136 6.59 8911 825 164,256 7.96

5018 666 134,338 8.02 5996 2,680 549,087 8.14 7608 1,503 249,648 6.54 8924 418 181,152 17.82

5048 1,474 503,770 13.93 6017 120 23,280 7.74 7622 21 4,152 7.99 8929 18 2,016 3.99

5049 91 34,272 15.47 6024 234 72,480 12.43 7700 2,103 308,448 5.65 8942 1,911 300,835 6.16

5056 5 10,104 83.94 6050 19 6,576 14.03 7706 1,889 502,063 10.72 8944 1,098 144,888 5.10

5057 843 189,960 8.97 6104 2,343 478,193 8.21 7718 82 34,320 16.86 8996 2,653 399,638 5.88

5060 270 59,904 8.85 6108 2,809 542,529 7.65 7745 356 70,872 7.74 9014 20 1,896 3.45

5081 1,154 180,720 6.03 6136 2,008 539,302 10.91 7922 303 111,768 15.11 9037 651 240,720 15.09

5094 2,451 468,823 7.61 6166 85 14,520 6.76 7936 2,056 306,666 5.83 9106 181 65,736 14.76

5113 2,295 523,501 9.10 6176 358 69,264 7.62 7943 2,354 474,742 8.01 9107 31 26,784 35.67

5114 0 1,488 -- 6177 2,433 440,385 7.15 7944 67 8,592 4.87 9129 97 23,376 9.62

5123 15 3,072 8.27 6210 1,982 354,217 7.08 7945 3,486 543,166 6.00 9163 2,107 550,742 10.53

5192 1,592 332,072 8.31 6211 440 93,000 8.43 7947 217 49,618 9.11 9213 204 38,700 7.40

5193 2,945 550,050 7.37 6270 1,611 256,135 6.24 7948 973 213,840 8.79 9214 28 2,016 2.60

5224 317 52,608 6.48 6275 0 2,920 -- 7951 948 141,648 5.82 9222 187 31,416 6.47

5228 393 79,632 8.09 6276 21 2,016 3.40 7953 110 23,352 8.40 9248 116 52,272 18.36

5235 27 4,392 6.27 6335 2,128 354,128 6.52 7981 206 112,728 22.40 9266 69 17,160 9.92

5247 2,325 552,074 9.56 6434 17 8,016 19.11 7990 108 23,304 8.46 9270 1,538 382,084 10.07

5258 803 177,528 8.77 6504 2,117 548,140 10.47 7992 20 1,896 3.46 9295 97 27,672 11.58

5303 596 179,592 12.15 6558 29 5,688 7.78 7997 103 34,656 13.64 9304 4 336 3.50

5312 1,669 404,451 9.78 6615 582 194,104 13.59 7999 17 13,992 33.97 9307 242 79,272 13.29

5341 22 2,016 3.25 6660 97 32,880 13.61 8022 60 48,504 33.27 9328 158 34,344 8.63

5342 0 4,404 -- 6663 95 36,168 15.57 8023 1,461 484,077 13.49 9329 12 3,240 10.58

5348 1,433 240,206 6.59 6734 347 102,262 11.90 8047 2,201 548,776 10.03 9345 2 960 20.00

5358 1,336 387,072 11.72 6736 1,641 452,975 11.21 8060 118 23,376 7.83 9363 887 135,816 5.92

5398 2,529 411,020 6.34 6740 13 2,016 5.65 8062 40 6,504 6.37 9364 3,140 418,894 5.14

5410 2,105 528,181 10.15 6750 217 37,990 6.81 8068 34 21,192 25.67 9365 31 5,664 7.25

5411 2,378 462,238 7.70 6757 3,346 551,361 6.44 8081 2,335 537,081 9.19 9371 132 31,416 9.47

5424 365 56,254 5.80 6775 507 110,784 8.70 8089 38 5,760 5.98 9417 1,837 331,982 7.13

5429 934 193,392 8.25 6776 1,973 431,190 8.79 8221 19 1,896 3.63 9419 3,380 542,606 6.21

5431 14 13,848 40.49 6788 162 29,256 7.14 8252 1,664 529,928 12.96 9435 73 33,600 18.84

5461 1,645 324,672 7.77 6792 1,530 419,078 11.17 8265 1,455 217,176 5.73 9491 2,453 443,170 7.13

5463 1,079 224,790 8.34 6794 19 2,016 3.53 8289 50 36,528 30.07 9499 1,630 431,095 10.70

5471 20 3,480 6.95 6834 1,903 317,594 6.59 8305 1,540 512,439 13.59 9522 11 2,016 6.78

5477 23 1,992 3.30 6893 1,178 374,777 13.00 8335 1,515 259,728 6.67 9527 1,956 539,410 11.18

5528 1,152 262,609 9.13 6935 1,658 406,635 9.94 8400 206 62,112 12.28 9532 2,555 484,263 7.55

5579 1 696 29.00 6981 176 132,768 31.04 8445 1,191 206,856 6.80 9544 4 2,928 30.50

5580 24 1,944 2.99 7020 115 21,432 7.20 8446 1,636 268,785 6.48 9565 1,339 352,743 10.64

5589 156 37,872 9.85 7060 876 277,917 12.91 8451 235 71,544 12.28 9570 467 100,848 8.72

5590 157 39,024 10.00 7066 2,765 470,310 6.66 8531 1,462 305,116 8.28 9574 22 2,856 5.18

5591 606 170,232 11.42 7074 1,919 523,667 11.08 8541 94 22,615 9.60 9588 1,824 457,802 10.07

5592 513 151,920 12.06 7097 102 29,232 11.54 8544 467 110,871 9.46 9665 2,916 548,295 7.43

5594 162 68,448 17.39 7116 560 167,304 12.09 8545 16 4,656 11.49 9715 2,416 443,326 7.27

5595 2 8,016 167.00 7140 2,313 395,594 6.74 8563 1,123 220,484 7.83 9729 3,094 549,310 6.97

5596 1,162 292,949 10.25 7173 956 115,200 4.54 8566 521 143,616 11.20 9772 925 140,832 5.95

5600 388 105,888 11.04 7174 3,971 474,094 4.50 8583 768 203,370 10.70 9814 32 13,030 16.49

5618 28 2,112 2.65 7213 700 156,336 8.88 8584 1,230 344,280 11.31 9815 645 121,848 7.42

5650 19 1,896 3.86 7243 2,518 549,034 8.72 8623 1,444 319,544 8.85 9816 71 35,472 20.50

5656 1,442 326,279 9.13 7262 89 27,360 12.54 8625 1,192 243,840 8.09 9817 1,285 356,901 11.23

5658 825 209,400 10.20 7274 405 121,725 12.20 8630 729 226,383 12.63 9829 1,373 436,603 12.94

5661 196 46,672 9.58 7300 1,141 258,332 9.09 8631 791 243,264 12.43 9830 146 45,216 12.62

5666 32 5,880 7.29 7311 26 6,600 10.23 8646 1,721 338,752 7.81 9858 1,288 293,448 9.16

5695 2,085 448,602 8.57 7363 20 2,016 3.60 8647 1,180 282,860 9.68 9893 2,365 537,872 9.11

5742 16 5,784 14.56 7422 2,597 544,386 8.35 8677 145 64,752 18.12 9916 982 185,230 7.46

5766 23 2,016 3.00 7431 1,382 456,709 13.46 8696 23 2,016 3.25 9976 1,856 549,337 11.97

5770 2,558 545,182 8.53

Appendix 4–1.4. Number of storms, total duration, and mean storm interevent time defined by 18-hour minimum interevent time for 

hourly rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)
Appendix 4 181

Appendix 4–1.5. Number of storms, total duration, and mean storm interevent time defined by 24-hour minimum interevent time for 

hourly rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

0015 5 624 4.29 1154 150 26,928 6.65 2160 19 4,752 9.58 3463 42 30,096 29.37

0016 2,619 543,665 8.10 1165 527 147,768 11.20 2206 628 105,121 6.45 3476 596 127,848 8.44

0050 839 197,240 9.28 1185 353 185,232 21.59 2238 198 51,864 10.36 3485 17 1,968 4.12

0054 37 5,688 5.70 1186 91 19,128 8.16 2240 71 12,864 6.97 3507 885 188,267 8.39

0120 15 1,896 4.01 1188 8 1,872 9.16 2242 1,456 253,435 6.69 3546 2,656 485,758 7.08

0145 136 28,392 8.08 1245 20 1,992 3.22 2244 2,747 535,994 7.58 3547 181 51,144 11.36

0146 37 5,664 5.77 1246 933 176,017 7.39 2247 41 7,056 6.48 3579 62 19,944 12.77

0174 1,055 275,194 10.40 1267 408 116,832 11.45 2309 555 153,600 10.97 3642 2,610 534,563 8.02

0178 14 2,040 5.33 1304 452 117,840 10.28 2312 554 92,757 6.47 3646 1,806 419,874 9.18

0179 250 66,456 10.60 1325 1,134 219,432 7.48 2334 53 22,344 17.10 3668 16 2,016 4.38

0202 222 58,398 10.59 1429 1,046 213,741 8.03 2336 194 53,256 11.02 3673 19 2,016 3.50

0206 2,094 532,111 10.14 1431 1,487 356,239 9.42 2354 22 20,976 39.18 3686 926 198,532 8.47

0208 3 384 5.33 1432 1,067 246,787 9.07 2355 39 10,536 10.48 3691 2,310 469,594 8.01

0211 2,787 542,494 7.60 1433 1,565 367,055 9.21 2357 421 98,496 9.21 3734 19 2,016 3.51

0244 62 11,568 6.98 1434 1,589 358,448 8.85 2360 1,346 399,684 11.83 3771 1,157 220,455 7.48

0248 1,651 529,764 12.99 1435 944 230,732 9.64 2361 151 56,004 15.00 3789 84 18,888 8.88

0262 2,111 431,066 8.00 1436 1,767 367,281 8.08 2394 2,614 504,483 7.51 3826 187 45,240 9.61

0271 15 2,016 4.65 1437 21 4,728 8.90 2404 2,391 493,624 8.11 3831 330 110,112 13.36

0380 344 163,872 19.37 1438 1,281 284,045 8.69 2415 2,470 501,413 7.93 3841 133 77,472 23.88

0394 7 1,992 10.88 1462 0 4,416 -- 2462 819 188,205 9.07 3871 1,173 317,328 10.75

0408 18 2,112 3.97 1492 942 280,441 11.97 2528 97 24,840 10.12 3884 18 1,896 3.94

0427 44 11,646 10.41 1500 18 2,112 3.90 2617 215 56,688 10.51 3941 55 7,608 5.12

0428 3,134 529,122 6.39 1528 1,129 366,583 13.11 2619 192 64,992 13.63 3963 5 1,488 12.08

0429 133 22,416 6.22 1541 48 10,953 8.90 2621 1,033 277,864 10.77 4040 392 92,806 9.43

0463 98 51,936 21.63 1569 155 32,160 8.04 2675 915 178,918 7.65 4058 18 2,016 3.99

0493 13 1,704 4.70 1632 6 1,320 8.88 2676 775 146,737 7.43 4098 1,427 417,420 11.82

0495 283 138,072 19.90 1641 182 110,280 24.80 2679 1,793 536,229 12.01 4100 299 121,992 16.56

0496 24 10,872 18.70 1646 1,987 543,287 11.01 2715 1,485 354,131 9.47 4137 954 221,233 9.23

0498 10 7,920 32.76 1663 32 11,460 14.20 2744 1,477 413,376 11.21 4191 1,961 519,452 10.56

0509 2,399 549,223 9.02 1671 2,576 548,538 8.36 2758 94 23,376 9.79 4256 0 21,906 --

0518 1,692 330,777 7.67 1680 1,002 261,792 10.37 2794 11 2,064 7.54 4257 2,517 498,651 7.74

0521 31 5,760 7.33 1694 129 45,172 14.16 2797 1,963 529,606 10.80 4258 134 25,608 7.31

0556 92 21,936 9.43 1696 937 268,080 11.46 2811 1,587 435,389 10.97 4278 1,361 409,467 12.07

0569 2,050 399,353 7.61 1697 78 29,496 15.37 2813 21 31,728 62.53 4299 112 86,976 32.05

0572 816 158,448 7.53 1698 1,075 291,219 10.84 2814 15 12,336 33.88 4300 2,121 289,264 5.02

0576 103 23,352 8.76 1720 177 46,709 10.55 2815 210 58,942 11.33 4305 1,831 266,616 5.37

0580 289 112,800 15.77 1761 86 16,680 7.44 2818 165 45,312 11.02 4307 460 96,430 7.98

0587 716 121,272 6.46 1773 2,842 502,398 6.87 2986 224 54,240 9.48 4309 2,912 517,057 6.86

0605 101 27,000 10.64 1810 17 2,112 4.51 3005 2,247 522,908 9.26 4311 2,936 543,389 7.15

0639 1,932 433,077 8.90 1823 18 1,968 4.03 3033 583 216,192 15.14 4313 213 39,432 7.09

0655 0 718 -- 1870 280 47,496 6.45 3034 1 6,888 287.00 4319 74 29,208 15.80

0665 1,762 361,772 8.05 1875 13 1,752 4.95 3047 18 2,016 3.59 4329 2,302 438,183 7.39

0689 1,310 381,486 11.60 1876 36 10,920 11.89 3103 27 29,448 45.04 4331 0 5,112 --

0690 548 179,395 13.24 1889 201 38,734 7.20 3133 2,190 486,379 8.74 4375 986 232,138 9.39

0691 2,262 469,381 8.16 1903 304 83,753 11.15 3156 232 63,435 10.84 4392 389 72,624 7.13

0708 114 32,809 11.59 1914 16 1,752 3.92 3171 2,017 463,053 9.06 4425 727 264,416 14.77

0738 1,478 306,512 8.12 1920 378 109,392 11.54 3189 278 97,104 14.06 4440 1,311 283,440 8.47

0776 1,449 439,998 12.25 1921 2,536 476,617 7.33 3260 143 44,448 12.49 4476 1,516 344,677 9.02

0779 364 108,787 12.08 1937 1,015 186,288 7.08 3267 88 22,512 10.12 4498 11 4,944 18.42

0784 1,569 429,972 11.03 1956 2,630 486,210 7.16 3270 1,336 365,659 11.05 4517 1,469 328,752 8.81

0786 450 117,888 10.44 1970 19 1,992 3.63 3272 17 3,840 9.00 4520 947 220,430 9.26

0917 1,801 300,936 6.35 2014 385 69,312 6.94 3277 13 4,176 12.94 4525 18 1,992 3.51

0923 20 2,016 3.37 2015 2,679 484,318 6.92 3278 845 253,450 12.10 4563 25 2,112 3.08

0926 2,629 551,357 8.25 2019 16 2,016 4.34 3280 142 41,832 11.94 4570 1,917 548,973 11.48

0950 38 18,936 20.45 2024 1,649 391,758 9.40 3281 42 26,304 25.88 4577 1,703 305,664 6.97

0996 17 1,992 4.01 2042 10 16,080 66.67 3283 1,374 247,224 6.89 4591 2,257 431,406 7.38

1013 205 63,492 12.53 2043 72 36,960 21.02 3284 2,334 499,445 8.41 4670 2,081 541,246 10.40

1017 2,317 549,062 9.39 2048 1,401 409,659 11.72 3285 1,847 382,496 8.17 4671 122 25,848 8.31

1042 13 1,488 3.48 2050 54 17,448 12.83 3329 1,321 306,792 9.14 4679 2,086 429,394 8.10

1048 18 1,728 3.32 2051 58 26,304 18.54 3335 174 33,792 7.51 4696 10 1,992 7.74

1053 531 145,392 10.89 2053 8 3,552 17.96 3370 1,652 317,621 7.53 4703 103 31,392 12.28

1057 1,408 363,120 10.26 2073 756 146,832 7.57 3410 2,006 514,264 10.26 4704 315 61,368 7.47

1063 15 1,968 4.49 2082 1,558 519,707 13.54 3415 2,410 537,022 8.82 4731 96 17,160 6.79

1068 2,251 512,393 8.99 2086 2,013 548,518 10.86 3430 3,311 530,963 6.07 4792 994 213,141 8.50

1080 151 61,344 16.48 2088 38 10,190 10.49 3431 184 32,784 6.63 4819 239 39,480 6.39

1081 1,049 241368 9.05 2090 281 58,356 8.19 3441 32 42,816 55.18 4852 15 2,016 5.32

1133 14 2,784 7.71 2096 2,197 493,125 8.86 3442 426 171,216 16.26 4866 2,397 548,790 9.04

1136 2,756 532,054 7.39 2128 266 68,160 10.07 3446 576 213,312 15.05 4876 110 29,184 10.56

1138 14 1,320 3.28 2131 1,879 483,317 10.27 3460 31 7,008 8.81 4878 2,166 350,328 6.11

1139 72 13,056 6.87 2142 15 2,016 4.90 3462 118 49,920 17.11 4880 2,198 551,284 10.01

Appendix 4–1.5. Number of storms, total duration, and mean storm interevent time defined by 24-hour minimum interevent time for 

hourly rainfall stations in Texas.

[--, not available]
182 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

4920 1,678 524,353 12.57 5775 12 5,112 17.54 7481 1,265 495,877 15.96 8743 2,934 527,995 6.97

4934 6 1,992 13.47 5779 18 5,880 13.04 7497 1,158 243,992 8.31 8761 843 256,990 12.31

4972 2,158 494,452 9.07 5840 315 78,888 9.92 7498 245 49,632 8.00 8778 2,122 398,041 7.32

4973 380 119,208 12.54 5890 1,985 515,614 10.35 7499 1,980 523,925 10.59 8845 2,435 550,655 8.88

4974 1,076 340,313 12.71 5891 143 53,304 15.17 7531 116 49,968 17.36 8859 1,668 312,504 7.24

4975 1,397 257,716 7.22 5897 1,183 245,324 8.17 7534 274 103,032 15.21 8898 580 116,904 7.86

4978 120 47,496 16.02 5957 1,910 445,446 9.29 7556 2,319 493,793 8.43 8908 30 5,904 7.64

4979 16 1,896 4.05 5958 161 41,136 10.09 7594 1,781 309,414 6.74 8910 17 1,968 4.34

4982 909 248,714 10.95 5973 85 23,376 10.83 7596 148 26,136 6.94 8911 746 164,256 8.71

5018 610 134,338 8.68 5996 2,493 549,087 8.69 7608 1,366 249,648 7.11 8924 384 181,152 19.33

5048 1,374 503,770 14.89 6017 112 23,280 8.23 7622 19 4,152 8.73 8929 14 2,016 4.88

5049 88 34,272 15.96 6024 212 72,480 13.63 7700 1,875 308,448 6.23 8942 1,744 300,835 6.67

5056 5 10,104 83.78 6050 19 6,576 14.03 7706 1,726 502,063 11.65 8944 988 144,888 5.57

5057 749 189,960 9.99 6104 1,973 478,193 9.58 7718 79 34,320 17.47 8996 2,351 399,638 6.53

5060 230 59,904 10.24 6108 2,594 542,529 8.22 7745 321 70,872 8.49 9014 17 1,896 3.88

5081 1,049 180,720 6.55 6136 1,826 539,302 11.91 7922 281 111,768 16.23 9037 606 240,720 16.15

5094 2,259 468,823 8.18 6166 77 14,520 7.38 7936 1,847 306,666 6.40 9106 166 65,736 16.02

5113 2,122 523,501 9.77 6176 326 69,264 8.28 7943 2,196 474,742 8.52 9107 31 26,784 35.67

5114 0 1,488 -- 6177 2,212 440,385 7.78 7944 57 8,592 5.57 9129 85 23,376 10.87

5123 14 3,072 8.79 6210 1,832 354,217 7.59 7945 3,119 543,166 6.60 9163 1,942 550,742 11.35

5192 1,480 332,072 8.88 6211 364 93,000 10.00 7947 195 49,618 10.04 9213 185 38,700 8.06

5193 2,692 550,050 7.98 6270 1,461 256,135 6.80 7948 890 213,840 9.53 9214 22 2,016 3.07

5224 287 52,608 7.07 6275 0 2,920 -- 7951 865 141,648 6.30 9222 165 31,416 7.23

5228 354 79,632 8.89 6276 20 2,016 3.52 7953 96 23,352 9.50 9248 107 52,272 19.84

5235 23 4,392 7.23 6335 1,957 354,128 7.02 7981 188 112,728 24.47 9266 67 17,160 10.19

5247 2,177 552,074 10.15 6434 17 8,016 19.11 7990 94 23,304 9.59 9270 1,376 382,084 11.16

5258 752 177,528 9.31 6504 1,945 548,140 11.33 7992 17 1,896 3.91 9295 90 27,672 12.43

5303 548 179,592 13.14 6558 23 5,688 9.69 7997 92 34,656 15.22 9304 3 336 4.67

5312 1,555 404,451 10.43 6615 544 194,104 14.48 7999 16 13,992 36.04 9307 223 79,272 14.35

5341 19 2,016 3.62 6660 85 32,880 15.43 8022 54 48,504 36.87 9328 147 34,344 9.22

5342 0 4,404 -- 6663 69 36,168 21.09 8023 1,368 484,077 14.35 9329 10 3,240 12.53

5348 1,319 240,206 7.09 6734 321 102,262 12.79 8047 2,019 548,776 10.85 9345 2 960 20.00

5358 1,252 387,072 12.45 6736 1,524 452,975 12.00 8060 106 23,376 8.62 9363 768 135,816 6.71

5398 2,273 411,020 6.95 6740 12 2,016 5.98 8062 33 6,504 7.53 9364 2,731 418,894 5.78

5410 1,966 528,181 10.81 6750 193 37,990 7.54 8068 30 21,192 28.97 9365 23 5,664 9.55

5411 2,167 462,238 8.37 6757 3,039 551,361 7.00 8081 2,138 537,081 9.96 9371 121 31,416 10.25

5424 317 56,254 6.54 6775 466 110,784 9.39 8089 37 5,760 6.09 9417 1,688 331,982 7.68

5429 827 193,392 9.20 6776 1,810 431,190 9.50 8221 17 1,896 3.90 9419 3,086 542,606 6.73

5431 14 13,848 40.49 6788 151 29,256 7.60 8252 1,535 529,928 13.97 9435 67 33,600 20.46

5461 1,554 324,672 8.17 6792 1,389 419,078 12.22 8265 1,298 217,176 6.32 9491 2,210 443,170 7.82

5463 1,000 224,790 8.93 6794 16 2,016 4.02 8289 48 36,528 31.29 9499 1,534 431,095 11.31

5471 16 3,480 8.48 6834 1,764 317,594 7.05 8305 1,420 512,439 14.67 9522 8 2,016 8.99

5477 17 1,992 4.16 6893 1,105 374,777 13.80 8335 1,415 259,728 7.08 9527 1,803 539,410 12.06

5528 1,074 262,609 9.73 6935 1,515 406,635 10.80 8400 183 62,112 13.72 9532 2,347 484,263 8.14

5579 1 696 29.00 6981 158 132,768 34.48 8445 1,077 206,856 7.43 9544 4 2,928 30.50

5580 20 1,944 3.41 7020 107 21,432 7.68 8446 1,492 268,785 7.02 9565 1,260 352,743 11.25

5589 141 37,872 10.81 7060 815 277,917 13.81 8451 222 71,544 12.95 9570 422 100,848 9.55

5590 141 39,024 11.05 7066 2,556 470,310 7.14 8531 1,352 305,116 8.89 9574 19 2,856 5.87

5591 545 170,232 12.60 7074 1,775 523,667 11.91 8541 91 22,615 9.89 9588 1,619 457,802 11.24

5592 456 151,920 13.46 7097 92 29,232 12.70 8544 434 110,871 10.12 9665 2,687 548,295 7.99

5594 151 68,448 18.59 7116 513 167,304 13.12 8545 15 4,656 12.21 9715 2,236 443,326 7.79

5595 2 8,016 167.00 7140 2,094 395,594 7.35 8563 1,048 220,484 8.33 9729 2,854 549,310 7.48

5596 1,025 292,949 11.51 7173 823 115,200 5.14 8566 469 143,616 12.34 9772 820 140,832 6.61

5600 347 105,888 12.25 7174 3,474 474,094 5.02 8583 706 203,370 11.56 9814 32 13,030 16.49

5618 24 2,112 2.94 7213 647 156,336 9.54 8584 1,125 344,280 12.29 9815 593 121,848 7.99

5650 17 1,896 4.22 7243 2,340 549,034 9.32 8623 1,339 319,544 9.48 9816 65 35,472 22.33

5656 1,323 326,279 9.87 7262 80 27,360 13.85 8625 1,094 243,840 8.74 9817 1,206 356,901 11.91

5658 768 209,400 10.90 7274 383 121,725 12.85 8630 687 226,383 13.35 9829 1,274 436,603 13.88

5661 174 46,672 10.69 7300 1,061 258,332 9.71 8631 740 243,264 13.22 9830 135 45,216 13.58

5666 28 5,880 8.21 7311 25 6,600 10.60 8646 1,595 338,752 8.36 9858 1,222 293,448 9.61

5695 1,925 448,602 9.22 7363 17 2,016 4.07 8647 1,078 282,860 10.51 9893 2,199 537,872 9.73

5742 14 5,784 16.51 7422 2,361 544,386 9.10 8677 135 64,752 19.40 9916 917 185,230 7.93

5766 23 2,016 3.00 7431 1,302 456,709 14.24 8696 19 2,016 3.76 9976 1,692 549,337 13.05

5770 2,383 545,182 9.09

Appendix 4–1.5. Number of storms, total duration, and mean storm interevent time defined by 24-hour minimum interevent time for 

hourly rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)
Appendix 4 183

Appendix 4–1.6. Number of storms, total duration, and mean storm interevent time defined by 48-hour minimum interevent time for 

hourly rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

0015 4 624 6.50 1154 108 26,928 8.62 2160 15 4,752 11.76 3463 35 30,096 34.93

0016 2,147 543,665 9.57 1165 434 147,768 13.28 2206 505 105,121 7.68 3476 492 127,848 9.91

0050 703 197,240 10.79 1185 316 185,232 23.97 2238 165 51,864 12.13 3485 14 1,968 4.76

0054 31 5,688 6.46 1186 65 19,128 10.87 2240 53 12,864 8.88 3507 699 188,267 10.25

0120 11 1,896 4.98 1188 6 1,872 11.69 2242 1,172 253,435 7.96 3546 2,135 485,758 8.46

0145 110 28,392 9.62 1245 12 1,992 4.63 2244 2,223 535,994 9.03 3547 153 51,144 13.16

0146 27 5,664 7.31 1246 728 176,017 9.08 2247 31 7,056 8.14 3579 51 19,944 15.20

0174 847 275,194 12.61 1267 334 116,832 13.67 2309 454 153,600 13.09 3642 2,150 534,563 9.43

0178 10 2,040 6.90 1304 380 117,840 11.95 2312 448 92,757 7.66 3646 1,516 419,874 10.66

0179 196 66,456 13.13 1325 955 219,432 8.62 2334 44 22,344 20.31 3668 8 2,016 7.33

0202 179 58,398 12.79 1429 861 213,741 9.45 2336 162 53,256 12.89 3673 10 2,016 5.69

0206 1,731 532,111 11.97 1431 1,230 356,239 11.09 2354 18 20,976 47.60 3686 739 198,532 10.26

0208 3 384 5.33 1432 902 246,787 10.46 2355 33 10,536 12.13 3691 1,893 469,594 9.46

0211 2,229 542,494 9.14 1433 1,320 367,055 10.65 2357 334 98,496 11.24 3734 10 2,016 5.57

0244 50 11,568 8.32 1434 1,331 358,448 10.30 2360 1,124 399,684 13.88 3771 923 220,455 9.02

0248 1,423 529,764 14.85 1435 816 230,732 10.93 2361 128 56,004 17.44 3789 67 18,888 10.77

0262 1,745 431,066 9.37 1436 1,478 367,281 9.38 2394 2,118 504,483 8.94 3826 159 45,240 11.06

0271 10 2,016 6.45 1437 19 4,728 9.69 2404 1,980 493,624 9.49 3831 279 110,112 15.55

0380 290 163,872 22.72 1438 1,085 284,045 10.01 2415 2,022 501,413 9.37 3841 109 77,472 28.81

0394 6 1,992 12.39 1462 0 4,416 -- 2462 671 188,205 10.75 3871 997 317,328 12.39

0408 10 2,112 6.07 1492 818 280,441 13.56 2528 83 24,840 11.59 3884 13 1,896 4.87

0427 33 11,646 13.31 1500 13 2,112 4.83 2617 178 56,688 12.40 3941 47 7,608 5.72

0428 2,437 529,122 7.80 1528 955 366,583 15.24 2619 168 64,992 15.36 3963 4 1,488 15.50

0429 107 22,416 7.38 1541 40 10,953 10.42 2621 880 277,864 12.39 4040 327 92,806 11.02

0463 86 51,936 24.43 1569 121 32,160 9.90 2675 747 178,918 9.05 4058 12 2,016 5.42

0493 10 1,704 5.62 1632 5 1,320 10.38 2676 598 146,737 9.21 4098 1,201 417,420 13.78

0495 245 138,072 22.76 1641 155 110,280 28.89 2679 1,491 536,229 14.16 4100 247 121,992 19.75

0496 22 10,872 20.30 1646 1,675 543,287 12.80 2715 1,246 354,131 11.00 4137 769 221,233 11.10

0498 9 7,920 36.19 1663 27 11,460 16.60 2744 1,263 413,376 12.87 4191 1,646 519,452 12.30

0509 1,984 549,223 10.61 1671 2,125 548,538 9.83 2758 72 23,376 12.33 4256 0 21,906 --

0518 1,369 330,777 9.14 1680 849 261,792 11.99 2794 10 2,064 8.13 4257 2,057 498,651 9.15

0521 27 5,760 8.18 1694 110 45,172 16.36 2797 1,622 529,606 12.76 4258 105 25,608 8.94

0556 80 21,936 10.62 1696 804 268,080 13.12 2811 1,345 435,389 12.69 4278 1,130 409,467 14.26

0569 1,612 399,353 9.29 1697 74 29,496 16.13 2813 19 31,728 68.97 4299 100 86,976 35.71

0572 671 158,448 8.85 1698 893 291,219 12.76 2814 10 12,336 50.25 4300 1,580 289,264 6.24

0576 83 23,352 10.57 1720 145 46,709 12.56 2815 176 58,942 13.23 4305 1,382 266,616 6.64

0580 242 112,800 18.56 1761 60 16,680 10.09 2818 142 45,312 12.59 4307 361 96,430 9.77

0587 572 121,272 7.72 1773 2,278 502,398 8.21 2986 181 54,240 11.42 4309 2,327 517,057 8.22

0605 82 27,000 12.77 1810 12 2,112 5.68 3005 1,853 522,908 10.92 4311 2,373 543,389 8.50

0639 1,572 433,077 10.60 1823 11 1,968 5.75 3033 494 216,192 17.60 4313 171 39,432 8.49

0655 0 718 -- 1870 226 47,496 7.65 3034 1 6,888 287.00 4319 60 29,208 19.17

0665 1,468 361,772 9.37 1875 11 1,752 5.51 3047 11 2,016 5.04 4329 1,877 438,183 8.73

0689 1,113 381,486 13.41 1876 32 10,920 13.17 3103 25 29,448 48.52 4331 0 5,112 --

0690 459 179,395 15.53 1889 153 38,734 9.01 3133 1,841 486,379 10.11 4375 806 232,138 11.16

0691 1,861 469,381 9.60 1903 255 83,753 13.02 3156 197 63,435 12.52 4392 310 72,624 8.58

0708 82 32,809 15.59 1914 10 1,752 5.28 3171 1,688 463,053 10.54 4425 630 264,416 16.84

0738 1,222 306,512 9.52 1920 326 109,392 13.16 3189 229 97,104 16.78 4440 1,102 283,440 9.81

0776 1,257 439,998 13.90 1921 2,080 476,617 8.62 3260 120 44,448 14.60 4476 1,248 344,677 10.64

0779 305 108,787 14.15 1937 847 186,288 8.19 3267 69 22,512 12.55 4498 9 4,944 22.35

0784 1,312 429,972 12.91 1956 2,071 486,210 8.70 3270 1,110 365,659 13.01 4517 1,224 328,752 10.29

0786 378 117,888 12.16 1970 10 1,992 5.58 3272 12 3,840 11.99 4520 775 220,430 10.99

0917 1,437 300,936 7.59 2014 292 69,312 8.70 3277 12 4,176 13.92 4525 12 1,992 4.58

0923 10 2,016 5.40 2015 2,090 484,318 8.47 3278 710 253,450 14.14 4563 15 2,112 4.29

0926 2,174 551,357 9.67 2019 10 2,016 6.24 3280 124 41,832 13.46 4570 1,618 548,973 13.34

0950 27 18,936 28.13 2024 1,396 391,758 10.84 3281 38 26,304 28.45 4577 1,379 305,664 8.27

0996 8 1,992 7.13 2042 9 16,080 73.88 3283 1,090 247,224 8.31 4591 1,869 431,406 8.61

1013 169 63,492 14.90 2043 62 36,960 24.23 3284 1,911 499,445 9.95 4670 1,728 541,246 12.23

1017 1,945 549,062 10.91 2048 1,160 409,659 13.86 3285 1,512 382,496 9.66 4671 99 25,848 9.87

1042 7 1,488 5.72 2050 52 17,448 13.27 3329 1,101 306,792 10.68 4679 1,697 429,394 9.62

1048 11 1,728 4.58 2051 51 26,304 20.89 3335 150 33,792 8.50 4696 7 1,992 10.46

1053 449 145,392 12.61 2053 6 3,552 23.51 3370 1,380 317,621 8.74 4703 79 31,392 15.56

1057 1,179 363,120 11.97 2073 622 146,832 8.89 3410 1,674 514,264 12.01 4704 261 61,368 8.70

1063 10 1,968 5.91 2082 1,354 519,707 15.36 3415 1,958 537,022 10.52 4731 78 17,160 8.03

1068 1,873 512,393 10.52 2086 1,677 548,518 12.75 3430 2,576 530,963 7.39 4792 797 213,141 10.25

1080 122 61,344 20.06 2088 32 10,190 12.20 3431 134 32,784 8.52 4819 184 39,480 7.88

1081 873 241,368 10.58 2090 232 58,356 9.61 3441 25 42,816 70.21 4852 11 2,016 6.79

1133 11 2,784 9.41 2096 1,811 493,125 10.43 3442 368 171,216 18.60 4866 1,994 548,790 10.57

1136 2,147 532,054 9.08 2128 230 68,160 11.41 3446 502 213,312 17.06 4876 89 29,184 12.76

1138 9 1,320 4.36 2131 1,553 483,317 12.13 3460 27 7,008 9.92 4878 1,708 350,328 7.37

1139 55 13,056 8.62 2142 8 2,016 8.22 3462 101 49,920 19.71 4880 1,835 551,284 11.71

Appendix 4–1.6. Number of storms, total duration, and mean storm interevent time defined by 48-hour minimum interevent time for 

hourly rainfall stations in Texas.

[--, not available]
184 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

4920 1,430 524,353 14.50 5775 8 5112 25.62 7481 1,103 495,877 18.10 8743 2,383 527,995 8.25

4934 5 1,992 15.92 5779 18 5880 13.04 7497 921 243,992 10.08 8761 722 256,990 14.13

4972 1,810 494,452 10.54 5840 271 78888 11.30 7498 197 49,632 9.60 8778 1,678 398,041 8.88

4973 314 119,208 14.88 5890 1,665 515614 12.07 7499 1,622 523,925 12.61 8845 2,013 550,655 10.44

4974 912 340,313 14.73 5891 124 53304 17.28 7531 96 49,968 20.68 8859 1,385 312,504 8.43

4975 1,129 257,716 8.59 5897 967 245324 9.67 7534 233 103,032 17.62 8898 488 116,904 9.07

4978 104 47,496 18.26 5957 1,582 445446 10.91 7556 1,909 493,793 9.94 8908 24 5,904 9.19

4979 8 1,896 6.65 5958 136 41136 11.67 7594 1,444 309,414 7.97 8910 13 1,968 5.24

4982 772 248,714 12.64 5973 70 23376 12.87 7596 122 26,136 8.12 8911 590 164,256 10.64

5018 514 134,338 10.03 5996 2,051 549087 10.25 7608 1,095 249,648 8.52 8924 327 181,152 22.45

5048 1,190 503,770 16.97 6017 84 23280 10.50 7622 17 4,152 9.61 8929 11 2,016 5.89

5049 72 34,272 19.20 6024 183 72480 15.57 7700 1,480 308,448 7.51 8942 1,378 300,835 8.07

5056 4 10,104 105.25 6050 17 6,576 15.51 7706 1,454 502,063 13.56 8944 775 144,888 6.71

5057 613 189,960 11.89 6104 1,519 478,193 12.02 7718 71 34,320 19.27 8996 1,850 399,638 7.91

5060 194 59,904 11.88 6108 2,116 542,529 9.75 7745 269 70,872 9.86 9014 10 1,896 5.48

5081 854 180,720 7.72 6136 1,530 539,302 13.93 7922 243 111,768 18.55 9037 538 240,720 18.01

5094 1,844 468,823 9.70 6166 63 14,520 8.68 7936 1,447 306,666 7.77 9106 147 65,736 17.90

5113 1,740 523,501 11.61 6176 265 69,264 9.86 7943 1,801 474,742 10.08 9107 26 26,784 42.24

5114 0 1,488 -- 6177 1,808 440,385 9.19 7944 43 8,592 6.97 9129 69 23,376 13.04

5123 12 3,072 10.08 6210 1,484 354,217 9.03 7945 2,460 543,166 7.99 9163 1,625 550,742 13.29

5192 1,226 332,072 10.42 6211 291 93,000 12.11 7947 152 49,618 12.47 9213 141 38,700 10.09

5193 2,181 550,050 9.52 6270 1,182 256,135 8.06 7948 737 213,840 11.21 9214 12 2,016 4.53

5224 221 52,608 8.75 6275 0 2,920 -- 7951 718 141,648 7.28 9222 139 31,416 8.32

5228 289 79,632 10.56 6276 10 2,016 5.67 7953 81 23,352 11.01 9248 92 52,272 22.80

5235 20 4,392 8.05 6335 1,619 354,128 8.18 7981 156 112,728 29.20 9266 56 17,160 11.93

5247 1,783 552,074 12.08 6434 15 8,016 21.48 7990 76 23,304 11.53 9270 1,089 382,084 13.71

5258 630 177,528 10.83 6504 1,632 548,140 13.22 7992 12 1,896 4.85 9295 78 27,672 14.09

5303 467 179,592 15.18 6558 22 5,688 10.09 7997 80 34,656 17.34 9304 3 336 4.67

5312 1,258 404,451 12.56 6615 453 194,104 17.10 7999 13 13,992 44.06 9307 192 79,272 16.45

5341 10 2,016 5.65 6660 76 32,880 17.08 8022 49 48,504 40.54 9328 120 34,344 10.99

5342 0 4,404 -- 6663 51 36,168 28.03 8023 1,172 484,077 16.51 9329 9 3,240 13.81

5348 1,066 240,206 8.43 6734 261 102,262 15.39 8047 1,666 548,776 12.85 9345 2 960 20.00

5358 1,056 387,072 14.49 6736 1,305 452,975 13.78 8060 83 23,376 10.63 9363 595 135,816 8.24

5398 1,852 411,020 8.21 6740 11 2,016 6.35 8062 30 6,504 8.15 9364 2,095 418,894 7.09

5410 1,641 528,181 12.67 6750 151 37,990 9.19 8068 22 21,192 39.01 9365 21 5,664 10.34

5411 1,750 462,238 10.01 6757 2,454 551,361 8.33 8081 1,778 537,081 11.69 9371 97 31,416 12.44

5424 230 56,254 8.44 6775 383 110,784 11.12 8089 31 5,760 6.99 9417 1,376 331,982 9.10

5429 677 193,392 10.93 6776 1,480 431,190 11.30 8221 10 1,896 5.53 9419 2,470 542,606 8.05

5431 12 13,848 47.03 6788 131 29,256 8.54 8252 1,325 529,928 15.97 9435 57 33,600 23.79

5461 1,299 324,672 9.50 6792 1,164 419,078 14.30 8265 1,029 217,176 7.60 9491 1,784 443,170 9.34

5463 812 224,790 10.67 6794 9 2,016 6.28 8289 37 36,528 40.16 9499 1,285 431,095 13.23

5471 13 3,480 10.11 6834 1,428 317,594 8.36 8305 1,189 512,439 17.25 9522 5 2,016 13.54

5477 12 1,992 5.38 6893 951 374,777 15.81 8335 1,149 259,728 8.38 9527 1,467 539,410 14.49

5528 900 262,609 11.34 6935 1,262 406,635 12.68 8400 145 62,112 16.94 9532 1,931 484,263 9.59

5579 1 696 29.00 6981 132 132,768 41.02 8445 874 206,856 8.82 9544 4 2,928 30.50

5580 15 1,944 4.11 7020 92 21,432 8.69 8446 1,216 268,785 8.28 9565 1,046 352,743 13.26

5589 111 37,872 13.35 7060 688 277,917 16.09 8451 190 71,544 14.90 9570 347 100,848 11.31

5590 108 39,024 13.98 7066 2,091 470,310 8.40 8531 1,122 305,116 10.42 9574 15 2,856 7.01

5591 463 170,232 14.57 7074 1,497 523,667 13.86 8541 77 22,615 11.41 9588 1,350 457,802 13.19

5592 386 151,920 15.65 7097 66 29,232 17.16 8544 351 110,871 12.17 9665 2,187 548,295 9.49

5594 129 68,448 21.53 7116 429 167,304 15.42 8545 13 4,656 13.81 9715 1,837 443,326 9.17

5595 2 8,016 167.00 7140 1,663 395,594 8.89 8563 845 220,484 9.98 9729 2,341 549,310 8.81

5596 827 292,949 13.92 7173 631 115,200 6.26 8566 383 143,616 14.77 9772 665 140,832 7.82

5600 296 105,888 14.10 7174 2,617 474,094 6.19 8583 566 203,370 14.08 9814 29 13,030 18.07

5618 13 2,112 4.23 7213 535 156,336 11.24 8584 947 344,280 14.33 9815 482 121,848 9.51

5650 12 1,896 5.45 7243 1,898 549,034 11.16 8623 1,109 319,544 11.15 9816 56 35,472 25.70

5656 1,089 326,279 11.69 7262 66 27,360 16.47 8625 915 243,840 10.17 9817 1,014 356,901 13.89

5658 646 209,400 12.69 7274 348 121,725 14.00 8630 592 226,383 15.26 9829 1,099 436,603 15.87

5661 136 46,672 13.28 7300 899 258,332 11.21 8631 644 243,264 14.98 9830 119 45,216 15.20

5666 22 5,880 10.06 7311 23 6,600 11.41 8646 1,327 338,752 9.76 9858 1,032 293,448 11.11

5695 1,612 448,602 10.72 7363 11 2,016 5.44 8647 896 282,860 12.36 9893 1,850 537,872 11.30

5742 13 5,784 17.63 7422 1,940 544,386 10.77 8677 113 64,752 22.89 9916 733 185,230 9.56

5766 9 2,016 6.02 7431 1,133 456,709 16.15 8696 10 2,016 5.77 9976 1,419 549,337 15.29

5770 1,922 545,182 10.92

Appendix 4–1.6. Number of storms, total duration, and mean storm interevent time defined by 48-hour minimum interevent time for 

hourly rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)
Appendix 4 185

Appendix 4–1.7. Number of storms, total duration, and mean storm interevent time defined by 72-hour minimum interevent time for 

hourly rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

0015 3 624 8.67 1154 89 26,928 9.94 2160 12 4,752 13.98 3463 30 30,096 40.38

0016 1,819 543,665 10.85 1165 379 147,768 14.87 2206 425 105,121 8.68 3476 423 127,848 11.13

0050 614 197,240 12.00 1185 292 185,232 25.74 2238 144 51,864 13.52 3485 10 1,968 6.03

0054 21 5,688 8.32 1186 56 19,128 12.21 2240 46 12,864 9.84 3507 590 188,267 11.69

0120 8 1,896 6.27 1188 5 1,872 13.52 2242 952 253,435 9.24 3546 1,758 485,758 9.75

0145 92 28,392 10.99 1245 9 1,992 5.37 2244 1,805 535,994 10.55 3547 135 51,144 14.59

0146 23 5,664 8.13 1246 622 176,017 10.20 2247 26 7,056 9.26 3579 46 19,944 16.59

0174 712 275,194 14.53 1267 285 116,832 15.59 2309 381 153,600 15.14 3642 1,813 534,563 10.73

0178 6 2,040 9.89 1304 335 117,840 13.25 2312 349 92,757 9.14 3646 1,328 419,874 11.82

0179 168 66,456 14.91 1325 803 219,432 9.78 2334 38 22,344 23.15 3668 6 2,016 9.47

0202 148 58,398 14.94 1429 743 213,741 10.56 2336 151 53,256 13.67 3673 9 2,016 6.07

0206 1,480 532,111 13.58 1431 1,060 356,239 12.46 2354 15 20,976 56.62 3686 632 198,532 11.56

0208 2 384 8.00 1432 774 246,787 11.78 2355 32 10,536 12.43 3691 1,609 469,594 10.69

0211 1,870 542,494 10.42 1433 1,147 367,055 11.89 2357 285 98,496 12.75 3734 7 2,016 7.33

0244 40 11,568 9.77 1434 1,159 358,448 11.45 2360 982 399,684 15.53 3771 765 220,455 10.38

0248 1,261 529,764 16.45 1435 710 230,732 12.19 2361 113 56,004 19.42 3789 53 18,888 12.97

0262 1,462 431,066 10.71 1436 1,274 367,281 10.48 2394 1,774 504,483 10.19 3826 137 45,240 12.44

0271 8 2,016 7.37 1437 17 4,728 10.55 2404 1,667 493,624 10.81 3831 252 110,112 16.95

0380 268 163,872 24.38 1438 939 284,045 11.17 2415 1,698 501,413 10.69 3841 98 77,472 31.75

0394 5 1,992 14.33 1462 0 4,416 -- 2462 581 188,205 12.06 3871 881 317,328 13.69

0408 8 2,112 7.27 1492 709 280,441 15.27 2528 71 24,840 13.12 3884 8 1,896 6.85

0427 27 11,646 15.77 1500 9 2,112 6.27 2617 158 56,688 13.65 3941 39 7,608 6.39

0428 1,982 529,122 9.03 1528 836 366,583 17.06 2619 145 64,992 17.41 3963 4 1,488 15.50

0429 88 22,416 8.44 1541 33 10,953 12.08 2621 785 277,864 13.59 4040 291 92,806 12.08

0463 78 51,936 26.66 1569 103 32,160 11.18 2675 621 178,918 10.38 4058 9 2,016 6.88

0493 9 1,704 6.00 1632 5 1,320 10.38 2676 495 146,737 10.60 4098 1,034 417,420 15.61

0495 222 138,072 24.86 1641 137 110,280 32.37 2679 1,323 536,229 15.65 4100 218 121,992 22.05

0496 22 10,872 20.30 1646 1,430 543,287 14.57 2715 1,096 354,131 12.17 4137 642 221,233 12.81

0498 8 7,920 40.34 1663 24 11,460 18.33 2744 1,100 413,376 14.41 4191 1,421 519,452 13.86

0509 1,710 549,223 11.92 1671 1,799 548,538 11.17 2758 61 23,376 14.09 4256 0 21,906 --

0518 1,148 330,777 10.43 1680 736 261,792 13.46 2794 7 2,064 10.48 4257 1,721 498,651 10.45

0521 21 5,760 9.78 1694 98 45,172 18.05 2797 1,401 529,606 14.38 4258 84 25,608 10.58

0556 71 21,936 11.65 1696 699 268,080 14.73 2811 1,174 435,389 14.18 4278 992 409,467 15.90

0569 1,328 399,353 10.75 1697 63 29,496 18.51 2813 16 31,728 81.46 4299 93 86,976 38.22

0572 559 158,448 10.12 1698 770 291,219 14.41 2814 7 12,336 70.76 4300 1,214 289,264 7.38

0576 75 23,352 11.43 1720 120 46,709 14.64 2815 157 58,942 14.53 4305 1,083 266,616 7.79

0580 217 112,800 20.42 1761 47 16,680 12.20 2818 124 45,312 14.05 4307 270 96,430 12.21

0587 453 121,272 9.10 1773 1,905 502,398 9.34 2986 152 54,240 13.12 4309 1,915 517,057 9.45

0605 69 27,000 14.74 1810 9 2,112 7.02 3005 1,572 522,908 12.43 4311 1,993 543,389 9.65

0639 1,320 433,077 12.16 1823 8 1,968 7.10 3033 454 216,192 18.93 4313 145 39,432 9.56

0655 0 718 -- 1870 183 47,496 8.87 3034 1 6,888 287.00 4319 45 29,208 24.76

0665 1,246 361,772 10.59 1875 10 1,752 5.85 3047 9 2,016 6.11 4329 1,579 438,183 9.91

0689 972 381,486 15.00 1876 32 10,920 13.17 3103 23 29,448 52.53 4331 0 5,112 --

0690 397 179,395 17.57 1889 129 38,734 10.21 3133 1,573 486,379 11.41 4375 696 232,138 12.53

0691 1,606 469,381 10.74 1903 227 83,753 14.33 3156 178 63,435 13.61 4392 252 72,624 10.00

0708 68 32,809 18.27 1914 7 1,752 6.55 3171 1,459 463,053 11.81 4425 563 264,416 18.54

0738 1,063 306,512 10.57 1920 289 109,392 14.54 3189 199 97,104 18.92 4440 953 283,440 10.96

0776 1,112 439,998 15.40 1921 1,724 476,617 9.89 3260 112 44,448 15.48 4476 1,077 344,677 11.94

0779 280 108,787 15.19 1937 704 186,288 9.34 3267 60 22,512 14.06 4498 9 4,944 22.35

0784 1,155 429,972 14.32 1956 1,691 486,210 10.10 3270 973 365,659 14.49 4517 1,059 328,752 11.51

0786 341 117,888 13.21 1970 7 1,992 7.33 3272 9 3,840 15.20 4520 645 220,430 12.72

0917 1,171 300,936 8.76 2014 235 69,312 10.22 3277 11 4,176 14.98 4525 7 1,992 6.73

0923 8 2,016 6.50 2015 1,727 484,318 9.73 3278 615 253,450 15.93 4563 9 2,112 6.54

0926 1,856 551,357 10.91 2019 8 2,016 7.53 3280 113 41,832 14.53 4570 1,409 548,973 14.96

0950 25 18,936 30.18 2024 1,192 391,758 12.27 3281 36 26,304 29.87 4577 1,143 305,664 9.46

0996 8 1,992 7.13 2042 8 16,080 82.82 3283 895 247,224 9.58 4591 1,570 431,406 9.78

1013 135 63,492 18.05 2043 58 36,960 25.73 3284 1,610 499,445 11.35 4670 1,518 541,246 13.58

1017 1,674 549,062 12.28 2048 997 409,659 15.72 3285 1,259 382,496 11.11 4671 85 25,848 11.08

1042 6 1,488 8.15 2050 47 17,448 14.41 3329 954 306,792 11.94 4679 1,434 429,394 10.93

1048 9 1,728 4.97 2051 43 26,304 24.32 3335 126 33,792 9.64 4696 7 1,992 10.46

1053 405 145,392 13.71 2053 6 3,552 23.51 3370 1,170 317,621 9.87 4703 66 31,392 18.13

1057 1,004 363,120 13.62 2073 513 146,832 10.26 3410 1,447 514,264 13.51 4704 220 61,368 9.86

1063 8 1,968 6.83 2082 1,237 519,707 16.58 3415 1,638 537,022 12.10 4731 65 17,160 9.14

1068 1,616 512,393 11.80 2086 1,421 548,518 14.60 3430 2,062 530,963 8.62 4792 700 213,141 11.32

1080 108 61,344 22.34 2088 28 10,190 13.59 3431 109 32,784 9.89 4819 149 39,480 9.17

1081 748 241,368 11.93 2090 201 58,356 10.72 3441 22 42,816 79.43 4852 8 2,016 8.76

1133 10 2,784 10.12 2096 1,563 493,125 11.71 3442 322 171,216 20.88 4866 1,752 548,790 11.69

1136 1,772 532,054 10.48 2128 201 68,160 12.70 3446 454 213,312 18.60 4876 76 29,184 14.55

1138 6 1,320 5.35 2131 1,349 483,317 13.59 3460 24 7,008 10.85 4878 1,400 350,328 8.45

1139 41 13,056 10.80 2142 5 2,016 11.68 3462 91 49,920 21.60 4880 1,588 551,284 13.15

Appendix 4–1.7. Number of storms, total duration, and mean storm interevent time defined by 72-hour minimum interevent time for 

hourly rainfall stations in Texas.

[--, not available] 
186 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

4920 1,263 524,353 16.09 5775 7 5,112 28.95 7481 984 495,877 19.98 8743 1,967 527,995 9.48

4934 5 1,992 15.92 5779 15 5,880 15.12 7497 776 243,992 11.50 8761 639 256,990 15.64

4972 1,542 494,452 11.95 5840 239 78,888 12.49 7498 163 49,632 11.08 8778 1,409 398,041 10.10

4973 271 119,208 16.85 5890 1,456 515,614 13.44 7499 1,412 523,925 14.11 8845 1,710 550,655 11.86

4974 808 340,313 16.32 5891 111 53,304 19.03 7531 82 49,968 23.86 8859 1,161 312,504 9.58

4975 934 257,716 9.87 5897 809 245,324 11.09 7534 200 103,032 20.11 8898 417 116,904 10.20

4978 88 47,496 21.11 5957 1,346 445,446 12.39 7556 1,621 493,793 11.27 8908 17 5,904 11.93

4979 6 1,896 8.50 5958 118 41,136 13.07 7594 1,224 309,414 8.96 8910 9 1,968 6.90

4982 671 248,714 14.17 5973 58 23,376 15.00 7596 112 26,136 8.63 8911 479 164,256 12.53

5018 436 134,338 11.39 5996 1,766 549,087 11.51 7608 889 249,648 9.91 8924 297 181,152 24.47

5048 1,085 503,770 18.37 6017 70 23,280 12.10 7622 14 4,152 11.11 8929 9 2,016 7.10

5049 63 34,272 21.60 6024 161 72,480 17.36 7700 1,189 308,448 8.74 8942 1,129 300,835 9.31

5056 2 10,104 210.50 6050 15 6,576 17.25 7706 1,262 502,063 15.25 8944 623 144,888 7.76

5057 521 189,960 13.54 6104 1,291 478,193 13.72 7718 63 34,320 21.39 8996 1,517 399,638 9.09

5060 153 59,904 14.40 6108 1,778 542,529 11.13 7745 217 70,872 11.63 9014 7 1,896 7.19

5081 709 180,720 8.80 6136 1,323 539,302 15.72 7922 210 111,768 21.08 9037 488 240,720 19.61

5094 1,566 468,823 10.99 6166 56 14,520 9.46 7936 1,173 306,666 9.01 9106 134 65,736 19.40

5113 1,494 523,501 13.11 6176 219 69,264 11.45 7943 1,569 474,742 11.21 9107 24 26,784 45.53

5114 0 1,488 -- 6177 1,486 440,385 10.65 7944 33 8,592 8.44 9129 63 23,376 14.05

5123 11 3,072 10.78 6210 1,259 354,217 10.20 7945 2,034 543,166 9.14 9163 1,397 550,742 15.05

5192 1,018 332,072 12.06 6211 241 93,000 14.10 7947 129 49,618 14.23 9213 117 38,700 11.64

5193 1,851 550,050 10.77 6270 978 256,135 9.23 7948 657 213,840 12.27 9214 6 2,016 7.35

5224 176 52,608 10.36 6275 0 2,920 -- 7951 585 141,648 8.37 9222 117 31,416 9.43

5228 239 79,632 12.26 6276 8 2,016 6.81 7953 70 23,352 12.38 9248 86 52,272 24.33

5235 17 4,392 9.07 6335 1,354 354,128 9.30 7981 145 112,728 31.24 9266 52 17,160 12.67

5247 1,530 552,074 13.66 6434 14 8,016 22.82 7990 58 23,304 14.33 9270 935 382,084 15.57

5258 533 177,528 12.36 6504 1,414 548,140 14.89 7992 6 1,896 7.53 9295 61 27,672 17.29

5303 417 179,592 16.70 6558 20 5,688 10.97 7997 74 34,656 18.58 9304 2 336 7.00

5312 1,091 404,451 14.10 6615 398 194,104 19.13 7999 13 13,992 44.06 9307 171 79,272 18.18

5341 7 2,016 7.51 6660 67 32,880 19.05 8022 46 48,504 43.02 9328 102 34,344 12.48

5342 0 4,404 -- 6663 40 36,168 35.11 8023 1,042 484,077 18.26 9329 7 3,240 17.04

5348 876 240,206 9.72 6734 214 102,262 18.23 8047 1,444 548,776 14.45 9345 2 960 20.00

5358 937 387,072 16.02 6736 1,161 452,975 15.18 8060 72 23,376 11.88 9363 475 135,816 9.69

5398 1,527 411,020 9.43 6740 10 2,016 7.02 8062 26 6,504 8.99 9364 1,671 418,894 8.27

5410 1,424 528,181 14.22 6750 124 37,990 10.63 8068 21 21,192 40.72 9365 18 5,664 11.50

5411 1,481 462,238 11.39 6757 2,008 551,361 9.63 8081 1,513 537,081 13.30 9371 82 31,416 14.25

5424 180 56,254 10.10 6775 322 110,784 12.76 8089 26 5,760 7.84 9417 1,168 331,982 10.29

5429 577 193,392 12.39 6776 1,251 431,190 12.92 8221 8 1,896 6.34 9419 2,022 542,606 9.28

5431 11 13,848 51.11 6788 106 29,256 9.96 8252 1,194 529,928 17.45 9435 50 33,600 26.77

5461 1,120 324,672 10.62 6792 1,017 419,078 16.01 8265 846 217,176 8.70 9491 1,484 443,170 10.73

5463 691 224,790 12.11 6794 6 2,016 8.56 8289 35 36,528 42.30 9499 1,139 431,095 14.61

5471 9 3,480 13.60 6834 1,174 317,594 9.65 8305 1,047 512,439 19.26 9522 4 2,016 21.00

5477 11 1,992 5.66 6893 854 374,777 17.32 8335 983 259,728 9.39 9527 1,270 539,410 16.35

5528 797 262,609 12.48 6935 1,102 406,635 14.16 8400 127 62,112 19.00 9532 1,637 484,263 10.87

5579 1 696 29.00 6981 114 132,768 47.13 8445 724 206,856 10.14 9544 4 2,928 30.50

5580 8 1,944 6.02 7020 83 21,432 9.40 8446 998 268,785 9.55 9565 905 352,743 14.94

5589 96 37,872 15.06 7060 590 277,917 18.35 8451 168 71,544 16.53 9570 284 100,848 13.27

5590 90 39,024 16.28 7066 1,740 470,310 9.60 8531 967 305,116 11.69 9574 11 2,856 8.58

5591 413 170,232 16.04 7074 1,323 523,667 15.35 8541 68 22,615 12.58 9588 1,181 457,802 14.72

5592 340 151,920 17.43 7097 59 29,232 18.89 8544 299 110,871 13.86 9665 1,892 548,295 10.59

5594 114 68,448 24.03 7116 368 167,304 17.57 8545 12 4,656 14.72 9715 1,551 443,326 10.41

5595 1 8,016 334.00 7140 1,404 395,594 10.07 8563 733 220,484 11.14 9729 1,953 549,310 10.08

5596 707 292,949 15.87 7173 485 115,200 7.40 8566 342 143,616 16.24 9772 531 140,832 9.17

5600 269 105,888 15.26 7174 1,991 474,094 7.35 8583 496 203,370 15.72 9814 22 13,030 23.01

5618 9 2,112 5.54 7213 456 156,336 12.76 8584 845 344,280 15.76 9815 402 121,848 10.91

5650 8 1,896 7.30 7243 1,617 549,034 12.67 8623 968 319,544 12.42 9816 52 35,472 27.48

5656 928 326,279 13.29 7262 60 27,360 17.84 8625 789 243,840 11.40 9817 887 356,901 15.53

5658 572 209,400 14.00 7274 318 121,725 15.09 8630 534 226,383 16.65 9829 981 436,603 17.48

5661 122 46,672 14.53 7300 787 258,332 12.45 8631 580 243,264 16.36 9830 105 45,216 16.90

5666 21 5,880 10.42 7311 20 6,600 12.73 8646 1,139 338,752 10.96 9858 890 293,448 12.49

5695 1,381 448,602 12.10 7363 8 2,016 6.86 8647 758 282,860 14.16 9893 1,594 537,872 12.72

5742 10 5,784 22.45 7422 1,685 544,386 12.02 8677 103 64,752 24.90 9916 608 185,230 11.02

5766 7 2,016 7.05 7431 1,022 456,709 17.63 8696 8 2,016 6.93 9976 1,258 549,337 16.93

5770 1,633 545,182 12.42

Appendix 4–1.7. Number of storms, total duration, and mean storm interevent time defined by 72-hour minimum interevent time for 

hourly rainfall stations in Texas—Continued.

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)

Station

no.

No.

of

storms

Total

duration

(hours)

Mean 

storm

interevent

time

(days)
Appendix 4 187

Appendix 4–2.1. L-moments of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in Texas—Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0015 0.10273 0.07309 0.71150 0.64511 0.37189 0.20108 1154 0.37295 0.25986 0.69676 0.57203 0.31963 0.19463

0016 .38511 .25319 .65743 .50821 .25779 .16041 1165 .41702 .25491 .61127 .47291 .23266 .13521

0050 .50593 .29615 .58536 .43998 .21025 .12812 1185 .38435 .21807 .56738 .44470 .21001 .11434

0054 .31767 .18918 .59551 .47295 .22546 .11673 1186 .47148 .30674 .65059 .54254 .32113 .20723

0120 .60333 .34811 .57697 .41632 .18128 .08660 1188 .36091 .22691 .62872 .52724 .29420 .22636

0145 .37637 .27471 .72989 .65386 .45179 .33752 1245 .50585 .32884 .65007 .56565 .34435 .24622

0146 .35231 .20630 .58558 .38256 .10211 .01005 1246 .51250 .29959 .58457 .54484 .27126 .18238

0174 .32717 .17482 .53434 .53045 .29287 .17264 1267 .38735 .25338 .65413 .56782 .36857 .27911

0178 .26120 .17420 .66692 .59557 .34420 .17655 1304 .48273 .30605 .63399 .52854 .31054 .21522

0179 .29057 .16757 .57667 .47202 .22912 .11305 1325 .57612 .36736 .63765 .52144 .28187 .17563

0202 .48328 .26817 .55490 .51610 .24559 .14331 1429 .51873 .31486 .60698 .50041 .27546 .17399

0206 .54830 .30667 .55931 .47264 .23593 .15685 1431 .55718 .34261 .61490 .49416 .25140 .14443

0208 -- -- -- -- -- -- 1432 .56381 .34775 .61678 .47764 .23891 .14393

0211 .30687 .20486 .66758 .53862 .29593 .19045 1433 .56333 .34151 .60623 .49279 .27261 .17319

0244 .45937 .24944 .54300 .32092 .08509 .03929 1434 .55992 .33985 .60696 .48783 .25455 .15369

0248 .35557 .20144 .56654 .51825 .28829 .15970 1435 .57954 .35543 .61330 .47738 .23958 .13883

0262 .58471 .34641 .59244 .46963 .24353 .15408 1436 .57380 .34692 .60460 .48197 .25623 .16255

0271 .69897 .43081 .61636 .44289 .21929 .18320 1437 .45071 .30677 .68064 .51465 .19012 .04387

0380 .62676 .40903 .65261 .55519 .33996 .23983 1438 .55409 .33903 .61186 .48286 .24756 .14680

0394 .46000 .24564 .53399 .34123 .16605 .05181 1462 -- -- -- -- -- --

0408 .86676 .46666 .53839 .35275 .20296 .17076 1492 .48235 .28420 .58919 .52638 .27591 .16216

0427 .43151 .25342 .58730 .58740 .28600 .15341 1500 .53606 .30894 .57631 .35829 .04138 -.06899

0428 .40801 .28272 .69293 .55708 .30334 .18985 1528 .47542 .29252 .61529 .55852 .31362 .18292

0429 .47570 .32658 .68653 .54493 .30187 .20464 1541 .65571 .37994 .57943 .47134 .18501 .11444

0463 .47370 .27083 .57173 .50067 .30770 .20084 1569 .50392 .34179 .67827 .57943 .37849 .29311

0493 .70842 .28749 .40581 .32264 .23370 .12487 1632 .47857 .26095 .54527 .12044 -.25730 .08212

0495 .32531 .18685 .57438 .46009 .25757 .17510 1641 .41386 .23517 .56824 .43397 .21010 .13376

0496 .24148 .13943 .57739 .46253 .25364 .13889 1646 .37862 .21198 .55987 .53120 .28375 .15603

0498 .16615 .05962 .35880 -.07449 -.09736 .18416 1663 .78113 .49390 .63229 .53790 .26175 .18446

0509 .52306 .32295 .61742 .53368 .30006 .18730 1671 .53025 .32321 .60955 .51905 .27902 .16730

0518 .55096 .32512 .59010 .49440 .25582 .16057 1680 .53631 .32269 .60169 .48079 .26018 .17040

0521 .42575 .26226 .61600 .50048 .27485 .14640 1694 .44124 .23819 .53982 .47688 .16994 .09024

0556 .50496 .29576 .58570 .47864 .26507 .17510 1696 .42951 .24908 .57991 .44753 .22765 .14778

0569 .61755 .39031 .63203 .54491 .30312 .18429 1697 .43084 .25071 .58191 .46878 .23303 .12625

0572 .55580 .35213 .63355 .52475 .29810 .19635 1698 .40740 .23556 .57820 .51632 .28599 .16120

0576 .41219 .28950 .70234 .59514 .35602 .24110 1720 .45870 .27593 .60153 .59269 .28396 .13711

0580 .54522 .36199 .66393 .56678 .33889 .22153 1761 .27129 .16508 .60850 .43922 .19379 .12601

0587 .57882 .37118 .64128 .51392 .27750 .18293 1773 .63171 .36447 .57695 .47188 .23508 .15098

0605 .60080 .30497 .50760 .39297 .20415 .13276 1810 .40231 .24425 .60711 .52907 .33370 .23100

0639 .50951 .31199 .61233 .56460 .32331 .20305 1823 .70880 .41197 .58122 .34757 .06608 .02885

0655 -- -- -- -- -- -- 1870 .55323 .32489 .58727 .43367 .19005 .09520

0665 .55164 .34163 .61930 .48770 .25528 .16016 1875 .81300 .40389 .49680 .40010 .17808 .10742

0689 .51964 .32627 .62787 .53820 .31441 .20115 1876 .57113 .34149 .59793 .45943 .22600 .13521

0690 .44756 .25672 .57359 .57065 .30283 .19749 1889 .38617 .27265 .70605 .56261 .30250 .19785

0691 .52574 .31595 .60096 .46134 .22896 .14006 1903 .40528 .21762 .53695 .52504 .25514 .17784

0708 .47290 .27241 .57604 .56720 .30967 .20625 1914 .68000 .41285 .60713 .57546 .44081 .38739

0738 .55032 .32728 .59471 .47091 .24815 .15894 1920 .58843 .34328 .58338 .47428 .27263 .20006

0776 .41261 .24905 .60360 .52606 .30044 .18417 1921 .61834 .36139 .58444 .47361 .24335 .15745

0779 .39776 .22404 .56327 .58213 .30008 .18052 1937 .61698 .36141 .58577 .44562 .22557 .14888

0784 .39069 .23081 .59078 .54531 .31829 .18632 1956 .58612 .35597 .60733 .49801 .27233 .17640

0786 .30922 .20177 .65250 .52783 .29407 .19300 1970 .84484 .57667 .68258 .55769 .31649 .21457

0917 .65416 .40162 .61394 .48800 .26436 .17608 2014 .37840 .27584 .72897 .60408 .34213 .20655

0923 .91625 .46853 .51135 .31232 .13601 .04671 2015 .41211 .29623 .71882 .60358 .36333 .24304

0926 .52415 .31232 .59586 .48465 .25356 .15228 2019 .73100 .40194 .54985 .36496 .15363 .11366

0950 .27043 .16470 .60904 .58531 .41017 .32802 2024 .56056 .32584 .58127 .46582 .24151 .14982

0996 .74594 .43428 .58220 .45691 .24629 .16357 2042 .13357 .04786 .35829 .07463 -.00825 -.18547

1013 .48571 .30474 .62740 .65300 .40530 .28874 2043 .20765 .11724 .56459 .43726 .21880 .13692

1017 .44501 .26516 .59586 .50643 .27258 .16120 2048 .45862 .28407 .61939 .57461 .32518 .18187

1042 .90111 .45131 .50084 .39757 .21314 .01709 2050 .32012 .23753 .74200 .64211 .38648 .22106

1048 .54259 .28077 .51746 .30982 .10305 .04091 2051 .43657 .25241 .57817 .46633 .25335 .18468

1053 .45619 .28264 .61958 .50612 .27267 .16800 2053 .20455 .13582 .66400 .67425 .50469 .37037

1057 .41863 .24097 .57560 .45754 .24606 .15678 2073 .53914 .33824 .62738 .51855 .29568 .19990

1063 .75897 .44288 .58353 .46928 .24428 .11336 2082 .35940 .20935 .58250 .51590 .29900 .18082

1068 .55076 .32119 .58317 .47499 .24863 .15809 2086 .54912 .32283 .58791 .47830 .24066 .14296

1080 .30967 .17304 .55878 .48066 .29981 .21163 2088 .58571 .34091 .58204 .48031 .16742 .08684

1081 .56297 .33169 .58918 .44732 .22096 .13436 2090 .54246 .30348 .55944 .49274 .23120 .15706

1133 .19474 .13386 .68739 .52833 .21681 .07722 2096 .53799 .31105 .57818 .47263 .24040 .14832

1136 .35287 .25926 .73472 .63051 .39247 .26309 2128 .54447 .32581 .59839 .46703 .23941 .16002

1138 .67826 .35680 .52605 .43034 .28624 .26885 2131 .49184 .28133 .57199 .49575 .25688 .15921

1139 .55087 .34273 .62217 .49963 .26317 .13720 2142 .85318 .47383 .55537 .32252 .10028 .06534

Appendix 4–2.1. L-moments of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
188 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 0.35393 0.25266 0.71387 0.63987 0.48189 0.43958 3463 0.57796 0.38248 0.66178 0.54666 0.33190 0.23110

2206 .63094 .38936 .61712 .49922 .27600 .18420 3476 .51896 .31352 .60413 .47538 .25510 .16409

2238 .28596 .18844 .65896 .51030 .23599 .11797 3485 .85000 .58343 .68639 .54956 .23572 .08493

2240 .29692 .18344 .61782 .47167 .25047 .16892 3507 .53783 .31832 .59187 .53393 .26053 .15370

2242 .47025 .29839 .63454 .46639 .21445 .12610 3546 .62530 .37356 .59741 .47935 .24933 .15486

2244 .51028 .32155 .63015 .49969 .26691 .15831 3547 .56264 .31819 .56553 .40559 .16975 .08942

2247 .47141 .31449 .66713 .53286 .29139 .18442 3579 .54494 .33286 .61082 .45246 .15987 .02009

2309 .64591 .35534 .55013 .43439 .24804 .17470 3642 .58049 .34581 .59573 .49410 .26623 .16956

2312 .56517 .31381 .55525 .45691 .20066 .13229 3646 .54983 .32145 .58463 .46968 .25736 .17237

2334 .86652 .50452 .58224 .43889 .22269 .11724 3668 .96923 .47086 .48581 .33088 .18698 .06500

2336 .57361 .30709 .53536 .37208 .16869 .11351 3673 .57263 .33303 .58158 .31873 .01401 -.01899

2354 .29313 .16558 .56489 .41317 .10682 .01352 3686 .52518 .30744 .58539 .51197 .23870 .13232

2355 .52078 .36299 .69701 .58502 .33352 .20328 3691 .52548 .30601 .58234 .49501 .25282 .15018

2357 .34483 .25423 .73727 .62312 .37095 .23987 3734 .95472 .62726 .65701 .49419 .23494 .13027

2360 .34481 .24565 .71243 .59687 .34942 .22339 3771 .53689 .31531 .58728 .53338 .25017 .15534

2361 .42939 .28500 .66374 .63623 .46414 .37668 3789 .19301 .10453 .54156 .48778 .30871 .20100

2394 .56322 .34067 .60486 .47560 .24690 .15569 3826 .51554 .28060 .54427 .41172 .21081 .12137

2404 .53951 .32617 .60456 .49020 .26389 .17104 3831 .59480 .35510 .59700 .47435 .25595 .17683

2415 .66429 .38936 .58614 .45605 .23526 .14865 3841 .59947 .34542 .57622 .44398 .22626 .14654

2462 .62580 .36495 .58317 .45455 .22228 .13095 3871 .47012 .27812 .59159 .46201 .23631 .15154

2528 .50264 .29585 .58859 .47049 .22560 .10947 3884 .80261 .54292 .67645 .55535 .26392 .10502

2617 .43054 .26831 .62320 .51341 .30064 .20717 3941 .65924 .38688 .58686 .35337 .08984 .06642

2619 .42882 .23861 .55642 .43716 .22746 .14274 3963 .07143 .03619 .50667 .60000 .43421 .25000

2621 .45582 .26534 .58211 .48523 .26519 .16302 4040 .48728 .27829 .57110 .44620 .22634 .13323

2675 .55219 .32929 .59634 .51837 .28291 .17897 4058 .68600 .42402 .61811 .48495 .25737 .17063

2676 .52780 .30929 .58600 .53486 .24715 .14262 4098 .34196 .18330 .53603 .52525 .27241 .14526

2679 .44955 .29104 .64741 .58786 .35071 .19977 4100 .45659 .28002 .61328 .49340 .26101 .17015

2715 .52991 .30542 .57636 .45408 .23233 .14584 4137 .51324 .28721 .55961 .50162 .23164 .15078

2744 .46579 .26988 .57940 .47603 .25136 .15519 4191 .50140 .31425 .62675 .54900 .31181 .18452

2758 .35852 .26331 .73444 .65758 .42084 .26239 4256 -- -- -- -- -- --

2794 .43091 .29836 .69241 .50599 .16870 -.00965 4257 .63689 .37017 .58122 .47965 .24037 .15371

2797 .18629 .11972 .64264 .53117 .29567 .19060 4258 .52534 .30120 .57335 .52184 .25993 .19374

2811 .43527 .25804 .59283 .51365 .27793 .15596 4278 .56291 .33703 .59874 .46470 .23371 .14364

2813 .51000 .30064 .58950 .48240 .28391 .15941 4299 .31326 .14964 .47770 .32900 .13472 .07297

2814 .19211 .14363 .74764 .68116 .40922 .15200 4300 .48359 .33348 .68959 .55473 .30999 .20372

2815 .44452 .25095 .56455 .56912 .31902 .21757 4305 .45608 .31956 .70067 .56758 .31853 .20616

2818 .52617 .31022 .58958 .44493 .22154 .14458 4307 .48370 .33012 .68248 .54560 .31312 .22645

2986 .68068 .38730 .56898 .38587 .15389 .10248 4309 .60818 .38143 .62716 .49899 .26815 .17589

3005 .51452 .29801 .57920 .47028 .23668 .14078 4311 .63377 .39448 .62243 .48941 .25416 .15637

3033 .24866 .13789 .55454 .50079 .31452 .21421 4313 .63927 .42308 .66181 .55858 .34205 .23717

3034 -- -- -- -- -- -- 4319 .48870 .28273 .57854 .43289 .18443 .09245

3047 .50278 .30476 .60616 .42639 .20019 .16062 4329 .62298 .38374 .61597 .49958 .28091 .18377

3103 .67108 .44935 .66960 .60223 .36463 .19422 4331 -- -- -- -- -- --

3133 .59412 .34529 .58118 .46084 .24292 .15787 4375 .51151 .30516 .59659 .57878 .32265 .22703

3156 .64430 .40159 .62330 .57332 .34627 .24025 4392 .65496 .40825 .62333 .47524 .23833 .15113

3171 .56607 .33668 .59476 .48066 .25898 .16383 4425 .36121 .20516 .56798 .54306 .30187 .16995

3189 .28741 .17064 .59371 .50890 .29933 .18843 4440 .46991 .28818 .61326 .48837 .25752 .16708

3260 .48255 .28776 .59632 .43926 .20881 .13146 4476 .50312 .28323 .56296 .48234 .24016 .14845

3267 .39286 .25609 .65186 .52747 .28768 .19374 4498 .18786 .10291 .54782 .37960 .16080 .08062

3270 .43669 .24825 .56848 .54475 .28248 .17959 4517 .51965 .30810 .59291 .45784 .23818 .15582

3272 .10560 .05267 .49874 .43110 .24368 .11626 4520 .48794 .27833 .57041 .53128 .25238 .15436

3277 .15188 .09588 .63128 .55113 .36774 .37100 4525 .62200 .41081 .66046 .52526 .24375 .12004

3278 .39856 .22708 .56974 .48791 .25743 .14148 4563 .45387 .26224 .57778 .41084 .19507 .17368

3280 .30175 .18747 .62127 .51414 .26925 .15074 4570 .44469 .26201 .58919 .52039 .29161 .17772

3281 .33083 .16108 .48690 .32733 .12487 .04654 4577 .62373 .35470 .56868 .45106 .22825 .14839

3283 .45116 .29577 .65557 .50396 .25826 .16000 4591 .56113 .34110 .60789 .48079 .25468 .16198

3284 .50865 .30210 .59393 .48895 .25155 .14164 4670 .43253 .25721 .59467 .51307 .27852 .15891

3285 .52849 .30566 .57836 .50485 .23175 .13108 4671 .35189 .22007 .62539 .47165 .22292 .13790

3329 .48343 .31017 .64161 .54439 .32310 .21832 4679 .52132 .31123 .59701 .53061 .28319 .18002

3335 .70202 .45155 .64322 .54276 .34056 .25069 4696 .39667 .20438 .51525 .31307 .07735 .01284

3370 .62761 .36250 .57758 .44338 .23055 .14860 4703 .40291 .24623 .61112 .50958 .26651 .12813

3410 .43194 .23879 .55283 .49910 .26309 .16569 4704 .68461 .44496 .64995 .53024 .30252 .20060

3415 .52706 .31065 .58940 .49665 .26253 .16396 4731 .36966 .26351 .71286 .61285 .40664 .31788

3430 .47884 .33154 .69237 .56414 .32559 .21970 4792 .50592 .28343 .56023 .50424 .23038 .14476

3431 .45700 .33068 .72359 .61494 .37996 .26526 4819 .59329 .32851 .55371 .47129 .21500 .13559

3441 .51711 .30534 .59048 .44662 .22461 .13401 4852 .83353 .41581 .49885 .48584 .36665 .23067

3442 .35652 .21241 .59578 .50445 .28132 .17480 4866 .57106 .33047 .57869 .46234 .23316 .14521

3446 .42297 .23876 .56448 .45768 .23951 .14695 4876 .69032 .41326 .59865 .51321 .23876 .13591

3460 .63043 .40039 .63511 .50424 .29996 .26012 4878 .66325 .41218 .62145 .50052 .27472 .17835

3462 .42325 .23472 .55457 .44361 .22165 .12042 4880 .39443 .22336 .56629 .48330 .26267 .15769

Appendix 4–2.1. L-moments of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in Texas—Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 189

4920 0.49863 0.30690 0.61549 0.54151 0.29829 0.17284 5957 0.53416 0.30789 0.57641 0.48655 0.24884 0.15379

4934 .28556 .19306 .67607 .78541 .72354 .71778 5958 .47763 .27945 .58508 .42856 .20354 .11666

4972 .49645 .29008 .58431 .49382 .26559 .16718 5973 .36608 .25798 .70470 .59201 .32359 .17626

4973 .68575 .37677 .54942 .41330 .21582 .14518 5996 .50025 .29601 .59172 .49598 .25873 .15552

4974 .40036 .23563 .58856 .49283 .26989 .16838 6017 .36755 .24659 .67090 .54520 .28995 .16378

4975 .61108 .34574 .56578 .48114 .22469 .15456 6024 .78236 .50237 .64212 .51053 .28295 .19913

4978 .49828 .33417 .67063 .56179 .31864 .19642 6050 .58000 .30083 .51867 .35199 .10282 -.04957

4979 .80208 .44969 .56066 .36094 .12350 .03920 6104 .31854 .17695 .55549 .49559 .28193 .16536

4982 .47869 .27794 .58064 .46671 .25461 .16525 6108 .65047 .37540 .57713 .46398 .23069 .14677

5018 .52827 .30137 .57048 .42213 .19617 .12787 6136 .34527 .18852 .54601 .51441 .26995 .14320

5048 .39877 .23926 .60001 .57227 .33178 .19581 6166 .32877 .20971 .63787 .52523 .26177 .13332

5049 .38532 .21920 .56887 .63054 .40229 .32201 6176 .63663 .39482 .62017 .49362 .27409 .18135

5056 .43200 .18600 .43056 .26882 .67742 .11828 6177 .63509 .37422 .58923 .48895 .25746 .16362

5057 .29699 .21368 .71949 .62642 .39415 .26035 6210 .58126 .34346 .59088 .49485 .25647 .16117

5060 .48899 .34538 .70630 .59781 .36613 .25487 6211 .54397 .34146 .62772 .48631 .25093 .15968

5081 .58164 .34131 .58680 .43064 .20642 .13776 6270 .63866 .36775 .57581 .50005 .25169 .17370

5094 .55994 .32945 .58837 .49523 .25889 .15693 6275 -- -- -- -- -- --

5113 .48934 .30676 .62688 .55952 .32155 .19155 6276 .77897 .39672 .50930 .33823 .14401 .08090

5114 -- -- -- -- -- -- 6335 .58320 .34074 .58426 .44581 .22081 .13620

5123 .57471 .33353 .58035 .45670 .20011 .01503 6434 .49000 .27063 .55231 .34073 .07576 .01695

5192 .58607 .34675 .59165 .47710 .24498 .14339 6504 .38259 .21941 .57350 .52615 .28819 .16216

5193 .52918 .32429 .61283 .50514 .26370 .15519 6558 .54441 .30739 .56463 .38885 .17648 .20086

5224 .62817 .38067 .60600 .47001 .24728 .15401 6615 .44494 .25711 .57786 .57970 .33332 .23375

5228 .55594 .33663 .60551 .44710 .19354 .09752 6660 .53788 .32286 .60025 .47097 .24045 .15679

5235 .47000 .29899 .63615 .49552 .25966 .19008 6663 .45025 .27539 .61163 .49156 .25127 .11830

5247 .38880 .21866 .56239 .50524 .26729 .14576 6734 .39414 .24293 .61635 .49495 .26611 .17075

5258 .56638 .33364 .58907 .45650 .23491 .14717 6736 .42620 .24987 .58627 .53258 .29037 .16412

5303 .50642 .32516 .64207 .54815 .33304 .24206 6740 .93000 .51505 .55381 .38093 .15513 .10980

5312 .47556 .27596 .58029 .52741 .28020 .17781 6750 .55872 .38788 .69423 .57160 .34587 .24552

5341 .86367 .52748 .61075 .51412 .30136 .20661 6757 .56290 .34684 .61617 .48161 .24912 .15411

5342 -- -- -- -- -- -- 6775 .37136 .22526 .60657 .47741 .25503 .16520

5348 .62013 .35183 .56735 .45440 .19062 .10752 6776 .39114 .21870 .55912 .50299 .27114 .15568

5358 .45098 .26739 .59292 .48140 .25093 .14440 6788 .62396 .36501 .58499 .44531 .23817 .15692

5398 .59630 .35665 .59810 .47640 .24998 .15969 6792 .32082 .17576 .54783 .50498 .28010 .14612

5410 .39955 .23024 .57624 .51173 .29345 .18298 6794 1.0297 .59509 .57795 .39198 .18884 .12318

5411 .31104 .20859 .67061 .54112 .29608 .18727 6834 .64368 .36638 .56919 .48180 .22945 .15791

5424 .49908 .34754 .69636 .53929 .27044 .16384 6893 .30182 .16476 .54589 .56335 .35145 .21660

5429 .49691 .32161 .64722 .53489 .30194 .19536 6935 .38924 .21788 .55975 .54001 .30840 .19484

5431 .80333 .43980 .54747 .51438 .31970 .15448 6981 .56023 .32243 .57553 .45226 .24891 .17040

5461 .64000 .38346 .59915 .45910 .23461 .15170 7020 .54107 .35142 .64949 .51531 .28862 .20169

5463 .60189 .35114 .58340 .51516 .25118 .16342 7060 .44810 .25511 .56931 .50271 .25505 .13913

5471 .14893 .10340 .69429 .67306 .50461 .40570 7066 .62944 .36802 .58467 .46636 .23373 .14342

5477 .65962 .41691 .63205 .66113 .52864 .41852 7074 .38024 .22224 .58448 .53279 .32049 .20304

5528 .63973 .36498 .57052 .44077 .22803 .14608 7097 .51076 .30671 .60050 .51694 .28967 .15890

5579 -- -- -- -- -- -- 7116 .40272 .23915 .59384 .47085 .24914 .16442

5580 .53862 .27057 .50233 .29332 .09515 .04973 7140 .60646 .39835 .65685 .55720 .32893 .21510

5589 .26296 .14917 .56725 .40687 .18116 .10191 7173 .59258 .42166 .71157 .58476 .34628 .23953

5590 .29835 .17337 .58111 .46983 .22987 .11450 7174 .55435 .38313 .69113 .55942 .32175 .21939

5591 .31961 .17015 .53238 .41501 .20776 .12335 7213 .57377 .34247 .59688 .47087 .25207 .16221

5592 .28170 .16144 .57311 .47804 .26539 .16951 7243 .46638 .27342 .58628 .51499 .27810 .16906

5594 .29231 .16606 .56810 .47587 .26533 .16644 7262 .18358 .10380 .56538 .42442 .19268 .09712

5595 -- -- -- -- -- -- 7274 .61157 .33376 .54574 .44329 .23955 .16212

5596 .33209 .17088 .51455 .54533 .26422 .14906 7300 .53100 .31183 .58725 .45619 .23646 .15273

5600 .33420 .19442 .58176 .49551 .28618 .17977 7311 .59844 .34608 .57830 .51767 .28823 .15480

5618 .54432 .31595 .58044 .43414 .17689 .06824 7363 .57857 .29709 .51349 .24783 .01853 .03859

5650 .49273 .23251 .47189 .37284 .30940 .21829 7422 .51161 .31706 .61974 .53306 .30009 .18724

5656 .40282 .22611 .56130 .56893 .30005 .18897 7431 .39772 .23365 .58748 .51650 .29363 .17951

5658 .41658 .25370 .60901 .51152 .29581 .19714 7481 .31994 .19098 .59690 .56542 .36030 .22542

5661 .51344 .32172 .62659 .63399 .37950 .26256 7497 .51385 .29895 .58179 .53768 .26544 .16847

5666 .44421 .26923 .60609 .49722 .28664 .18376 7498 .54178 .32197 .59429 .55051 .29572 .20617

5695 .58942 .34099 .57851 .44786 .22979 .14917 7499 .50094 .28430 .56753 .50372 .26046 .16646

5742 .22870 .14063 .61493 .51843 .26965 .16921 7531 .51764 .29763 .57499 .41165 .18632 .10618

5766 .65730 .41495 .63130 .46933 .17224 .00922 7534 .55019 .34932 .63490 .53941 .34191 .26103

5770 .41628 .24174 .58070 .50763 .28028 .16488 7556 .53799 .31735 .58989 .51715 .27960 .18000

5775 .34643 .19049 .54988 .32881 -.04007 -.06288 7594 .64424 .38136 .59195 .45555 .23144 .14858

5779 .53556 .35134 .65603 .54199 .28944 .13464 7596 .67751 .40225 .59372 .40666 .14959 .07738

5840 .53469 .32008 .59864 .46620 .23375 .13867 7608 .50713 .32322 .63736 .49565 .25267 .15393

5890 .29393 .19713 .67066 .54640 .30281 .19133 7622 .21261 .16941 .79680 .72202 .48393 .32758

5891 .34657 .19167 .55305 .41911 .18924 .10712 7700 .58010 .36320 .62610 .49044 .25497 .16080

5897 .55009 .32378 .58860 .53243 .26189 .16846 7706 .44288 .26719 .60329 .52688 .29460 .17626

Appendix 4–2.1. L-moments of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in Texas—Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
190 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 0.53907 0.33452 0.62055 0.51993 0.29646 0.17699 8910 0.61435 0.35466 0.57730 0.36970 0.05964 -0.05403

7745 .60829 .39002 .64117 .50490 .26386 .16514 8911 .47805 .30587 .63984 .50415 .26152 .15873

7922 .23187 .13679 .58994 .48456 .27291 .17415 8924 .28811 .15657 .54344 .44369 .23272 .13064

7936 .64678 .38090 .58892 .47923 .24674 .16225 8929 .72138 .44365 .61500 .39238 .04403 -.06798

7943 .33734 .22581 .66937 .53444 .28434 .17510 8942 .62511 .36705 .58718 .50093 .24869 .15636

7944 .34200 .23928 .69964 .56345 .29989 .17381 8944 .54441 .33423 .61393 .47101 .24233 .15510

7945 .38871 .27727 .71332 .58929 .34071 .22350 8996 .54426 .34268 .62964 .50793 .27698 .17827

7947 .58074 .36699 .63193 .58924 .36316 .25732 9014 .65480 .33463 .51105 .32803 .09424 -.00198

7948 .49748 .32415 .65159 .53923 .30131 .18608 9037 .29985 .18082 .60303 .54986 .35710 .25723

7951 .59927 .34281 .57205 .42901 .20638 .12094 9106 .26559 .16895 .63611 .60140 .41472 .31434

7953 .40121 .26007 .64823 .53676 .29415 .16490 9107 .32425 .19487 .60097 .47751 .23448 .14193

7981 .48238 .30333 .62882 .48235 .22201 .11395 9129 .31465 .22230 .70648 .63682 .39804 .24632

7990 .40237 .28238 .70178 .58582 .33630 .21154 9163 .49342 .29080 .58937 .49176 .26350 .16008

7992 .57893 .33430 .57744 .42384 .09079 -.04199 9213 .42699 .27517 .64445 .48321 .22500 .13458

7997 .43687 .26495 .60647 .47113 .23228 .12542 9214 .79629 .45138 .56685 .46017 .24052 .12315

7999 .29619 .19643 .66318 .55129 .36806 .32070 9222 .44570 .28613 .64197 .49355 .24236 .14033

8022 .37949 .23687 .62418 .49773 .21189 .07528 9248 .40545 .23564 .58118 .45676 .20234 .08574

8023 .41615 .24578 .59060 .53024 .30316 .18630 9266 .48337 .27289 .56456 .44093 .21542 .10330

8047 .51555 .30293 .58758 .48060 .24312 .14296 9270 .30410 .16183 .53216 .54649 .31568 .17438

8060 .38643 .26713 .69127 .58146 .30994 .15480 9295 .19586 .12208 .62330 .51621 .28043 .16154

8062 .60213 .41528 .68969 .55220 .29066 .15742 9304 -- -- -- -- -- --

8068 .24585 .16616 .67584 .60444 .36846 .23661 9307 .51281 .28213 .55017 .43566 .21656 .12305

8081 .50216 .31566 .62861 .55335 .32416 .20727 9328 .39485 .22796 .57735 .43435 .18327 .09143

8089 .43239 .24544 .56764 .38744 .13614 .04299 9329 .45312 .26621 .58749 .28422 -.10783 -.14229

8221 .58375 .31103 .53282 .38605 .23214 .16789 9345 -- -- -- -- -- --

8252 .40571 .23646 .58282 .51492 .28501 .16399 9363 .37165 .25932 .69774 .57971 .33819 .22223

8265 .61648 .40290 .65354 .55182 .32976 .22734 9364 .43703 .30771 .70411 .58126 .33758 .22222

8289 .40000 .19675 .49187 .25516 .07714 .06652 9365 .27875 .17612 .63183 .64908 .46733 .33785

8305 .27072 .14830 .54781 .53090 .32651 .18432 9371 .51395 .29700 .57787 .43075 .18282 .08967

8335 .65963 .38630 .58564 .44070 .22196 .14629 9417 .53150 .32327 .60823 .46554 .22001 .12315

8400 .32012 .19026 .59435 .51963 .32519 .22764 9419 .43258 .28854 .66702 .51266 .25228 .14735

8445 .57037 .36643 .64245 .52304 .28759 .18503 9435 .43447 .24233 .55777 .45062 .25049 .18377

8446 .50997 .30253 .59322 .50688 .25723 .13813 9491 .56034 .33819 .60355 .49473 .25730 .15255

8451 .41060 .24312 .59211 .45302 .20095 .10277 9499 .43913 .25276 .57558 .51896 .26679 .15001

8531 .55067 .32043 .58189 .46328 .24398 .15535 9522 .87263 .55632 .63752 .43818 .11445 -.02741

8541 .51779 .29320 .56626 .43641 .23540 .14485 9527 .37282 .20711 .55553 .53711 .28422 .15566

8544 .58289 .35631 .61129 .53071 .28807 .17832 9532 .51907 .30483 .58727 .48901 .25985 .16453

8545 .26217 .13368 .50987 .25876 .05808 .08900 9544 1.2500 1.1260 .90080 .96803 .95560 .90586

8563 .56719 .32856 .57928 .52297 .26423 .18092 9565 .46615 .27146 .58235 .51046 .28274 .17602

8566 .43655 .25424 .58239 .44185 .20877 .11296 9570 .42572 .23656 .55567 .54990 .28769 .18471

8583 .43061 .24400 .56664 .55210 .25525 .13805 9574 .42963 .24644 .57361 .56569 .27133 .14594

8584 .51463 .29625 .57566 .47578 .23050 .13514 9588 .43068 .27134 .63001 .57024 .34217 .20225

8623 .52556 .29514 .56157 .47977 .23876 .14669 9665 .58354 .34692 .59451 .48418 .25156 .15744

8625 .51480 .31122 .60455 .48111 .25575 .16908 9715 .53752 .31534 .58667 .46764 .23174 .13838

8630 .42914 .24465 .57010 .47873 .23769 .12511 9729 .42891 .27916 .65086 .50096 .25243 .15598

8631 .45616 .27439 .60153 .49631 .27444 .17201 9772 .55369 .36728 .66333 .56045 .33394 .22579

8646 .53350 .31988 .59959 .47186 .24124 .14922 9814 .52390 .30344 .57919 .37729 .11123 .02417

8647 .37070 .21323 .57523 .54861 .31076 .17809 9815 .55328 .33743 .60988 .51234 .28771 .18410

8677 .47401 .27280 .57552 .45235 .22893 .12652 9816 .54169 .34963 .64544 .52382 .30635 .22371

8696 .63833 .33226 .52052 .30729 .13393 .14698 9817 .49724 .28090 .56493 .49345 .24775 .15897

8743 .62340 .37219 .59704 .47965 .25321 .16121 9829 .32126 .18864 .58718 .54975 .33658 .19485

8761 .37565 .20959 .55794 .52619 .30262 .18524 9830 .25463 .15375 .60383 .49307 .25526 .14657

8778 .57635 .33805 .58653 .49720 .24964 .15705 9858 .42228 .23902 .56603 .45472 .24944 .16272

8845 .52296 .32588 .62314 .54532 .30638 .18413 9893 .49094 .28892 .58851 .48964 .26177 .16145

8859 .63032 .36844 .58453 .44170 .22239 .14389 9916 .64072 .36611 .57141 .45420 .21001 .12291

8898 .61606 .36411 .59103 .46179 .24480 .15773 9976 .44450 .27500 .61869 .54525 .31184 .18407

8908 .48543 .30937 .63730 .52598 .30246 .22045

Appendix 4–2.1. L-moments of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in Texas—Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 191

Appendix 4–2.2. L-moments of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in Texas—Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0015 0.11300 0.07900 0.69912 0.62447 0.35503 0.18565 1154 0.40686 0.28269 0.69481 0.56303 0.30652 0.18234

0016 .41213 .26920 .65318 .50395 .25758 .16298 1165 .43959 .26672 .60674 .47199 .23529 .14073

0050 .53846 .31069 .57698 .42833 .20311 .12556 1185 .39403 .22194 .56325 .43813 .20496 .11276

0054 .32862 .19877 .60487 .47976 .22444 .10602 1186 .50240 .32933 .65551 .55566 .32751 .19813

0120 .68655 .37670 .54868 .34875 .14639 .08476 1188 .39700 .24167 .60873 .48966 .27192 .21287

0145 .40199 .29198 .72634 .64777 .44644 .33337 1245 .57611 .36390 .63166 .52254 .30948 .23156

0146 .37388 .21694 .58024 .37120 .09710 .01315 1246 .54818 .32178 .58700 .53314 .26148 .17775

0174 .34389 .18385 .53461 .51718 .28162 .17114 1267 .41248 .26920 .65265 .56670 .37016 .28303

0178 .27208 .17832 .65537 .59294 .33228 .17006 1304 .51643 .32396 .62731 .51792 .29842 .20522

0179 .30095 .17441 .57953 .46876 .22232 .10886 1325 .61215 .38860 .63481 .51965 .28254 .17783

0202 .50174 .28152 .56109 .51413 .23554 .12646 1429 .54607 .33295 .60971 .50615 .28202 .18090

0206 .57862 .32369 .55941 .46943 .23504 .15800 1431 .59371 .36128 .60852 .49067 .25551 .15404

0208 -- -- -- -- -- -- 1432 .60192 .36509 .60655 .46213 .22793 .13925

0211 .32669 .21676 .66350 .53513 .29686 .19392 1433 .60023 .35956 .59904 .48292 .26507 .16671

0244 .47935 .27030 .56390 .36443 .13710 .09474 1434 .59284 .35681 .60186 .48196 .25221 .15662

0248 .37266 .21235 .56982 .52126 .29279 .16786 1435 .61687 .37344 .60538 .46786 .23209 .13460

0262 .61762 .36380 .58904 .46282 .23748 .15101 1436 .61761 .36902 .59750 .47451 .25327 .16258

0271 .81080 .45620 .56265 .40022 .23579 .19831 1437 .46741 .33188 .71005 .57044 .26261 .10290

0380 .66389 .42670 .64273 .54305 .33062 .23335 1438 .58849 .35655 .60587 .47337 .23880 .14114

0394 .46000 .24564 .53399 .34123 .16605 .05181 1462 -- -- -- -- -- --

0408 .92094 .47352 .51417 .34021 .21473 .16935 1492 .51105 .29951 .58608 .51446 .26808 .16255

0427 .47015 .27087 .57614 .54186 .24989 .14698 1500 .63179 .34361 .54387 .30463 .00265 -.04873

0428 .44155 .30325 .68679 .54720 .29506 .18604 1528 .50395 .30746 .61011 .54609 .30310 .18265

0429 .53913 .36743 .68153 .54001 .29845 .19951 1541 .69545 .39914 .57392 .44994 .16956 .11446

0463 .51419 .28630 .55679 .48148 .28475 .18349 1569 .51760 .35045 .67706 .58018 .37872 .29069

0493 .74778 .28771 .38476 .29648 .26258 .11850 1632 .47857 .26095 .54527 .12044 -.25730 .08212

0495 .33989 .19356 .56949 .45840 .25775 .17591 1641 .43026 .23924 .55604 .42030 .20538 .13624

0496 .24148 .13943 .57739 .46253 .25364 .13889 1646 .39827 .22305 .56006 .52462 .27635 .15500

0498 .17750 .05705 .32138 -.14263 -.02169 .19079 1663 .86250 .56800 .65855 .58261 .32682 .23291

0509 .56246 .34519 .61372 .52733 .29611 .18950 1671 .56632 .34394 .60732 .51437 .27541 .16913

0518 .58634 .34511 .58859 .48626 .25127 .16230 1680 .56230 .33641 .59827 .48211 .26738 .17856

0521 .48657 .28346 .58257 .45718 .24671 .11561 1694 .47333 .25704 .54303 .46388 .16119 .08699

0556 .51374 .29753 .57916 .47694 .26407 .17438 1696 .45867 .26475 .57721 .45181 .23883 .16045

0569 .65586 .41326 .63010 .54072 .30152 .18831 1697 .45478 .27517 .60506 .50678 .27658 .15994

0572 .58420 .36735 .62882 .51905 .29682 .19908 1698 .43685 .25311 .57939 .51295 .28450 .16897

0576 .43675 .30291 .69355 .58100 .34150 .23115 1720 .47806 .29005 .60673 .59099 .28322 .13524

0580 .58266 .38292 .65720 .55944 .33392 .21931 1761 .30659 .18824 .61399 .45611 .22046 .14006

0587 .60900 .38773 .63666 .50995 .27783 .18630 1773 .66639 .38148 .57245 .46256 .22924 .14857

0605 .62832 .31378 .49940 .37995 .19805 .12902 1810 .43583 .26261 .60254 .52146 .34492 .25093

0639 .53837 .32875 .61065 .55709 .31743 .20433 1823 .70880 .41197 .58122 .34757 .06608 .02885

0655 -- -- -- -- -- -- 1870 .59042 .34186 .57900 .41923 .17851 .08991

0665 .58175 .35790 .61522 .48339 .25211 .15766 1875 .81300 .40389 .49680 .40010 .17808 .10742

0689 .55041 .34490 .62663 .53393 .30897 .19749 1876 .58212 .34443 .59169 .45285 .22438 .13535

0690 .46791 .26894 .57478 .56464 .30342 .20151 1889 .42548 .29342 .68963 .53722 .28074 .18729

0691 .55592 .33290 .59882 .46051 .23123 .14325 1903 .42672 .22868 .53589 .51074 .24975 .17976

0708 .49527 .28263 .57066 .54937 .29815 .20132 1914 .71091 .42675 .60029 .56473 .43535 .38314

0738 .58821 .34404 .58490 .45935 .24315 .15805 1920 .61839 .35881 .58024 .46932 .26825 .19865

0776 .43379 .26219 .60441 .52441 .29708 .18275 1921 .65780 .38293 .58215 .46890 .24031 .15742

0779 .42095 .24094 .57236 .57997 .29660 .17272 1937 .65685 .37723 .57431 .43306 .21954 .14676

0784 .41066 .24299 .59171 .54041 .31114 .18246 1956 .62346 .37597 .60303 .49062 .26702 .17377

0786 .33069 .21484 .64966 .51852 .28486 .18709 1970 .90310 .59909 .66337 .53991 .30949 .21346

0917 .68921 .41862 .60738 .48050 .25891 .17190 2014 .41214 .29635 .71906 .58715 .32430 .19358

0923 1.0859 .53425 .49197 .33561 .12427 .01746 2015 .44048 .31561 .71650 .59941 .35907 .23959

0926 .55304 .32878 .59450 .48085 .24961 .15015 2019 .75621 .41034 .54264 .34442 .14212 .11776

0950 .27630 .16774 .60710 .58095 .40775 .32345 2024 .59477 .34423 .57876 .46281 .24312 .15661

0996 .79567 .45555 .57254 .44188 .23888 .15627 2042 .14385 .05026 .34938 -.04731 -.06957 -.07978

1013 .51128 .32479 .63524 .65167 .40099 .27986 2043 .22532 .12821 .56900 .44558 .22062 .12927

1017 .47305 .28086 .59373 .49928 .26619 .16070 2048 .48841 .30240 .61916 .56475 .31134 .17263

1042 .93577 .51300 .54821 .52323 .39771 .23550 2050 .33213 .24598 .74062 .63162 .36775 .20447

1048 .54259 .28077 .51746 .30982 .10305 .04091 2051 .45612 .26631 .58387 .46432 .23803 .15818

1053 .48040 .29644 .61706 .49882 .26487 .16306 2053 .22500 .14878 .66123 .63742 .45402 .31927

1057 .44489 .25513 .57347 .45606 .24688 .15951 2073 .56406 .35373 .62712 .52024 .30094 .20490

1063 .84654 .52100 .61545 .54871 .38612 .30895 2082 .37772 .22039 .58346 .51217 .29291 .17912

1068 .58593 .33832 .57741 .46324 .23809 .15239 2086 .58488 .34161 .58406 .47213 .23570 .14167

1080 .31856 .17608 .55271 .47855 .30050 .20893 2088 .64737 .36873 .56959 .44023 .14227 .08773

1081 .59736 .34512 .57775 .43717 .21601 .13054 2090 .57573 .32313 .56124 .48335 .22382 .15362

1133 .21765 .14375 .66047 .48153 .17698 .05579 2096 .57421 .33034 .57530 .46586 .23548 .14841

1136 .38086 .27842 .73104 .62254 .38241 .25372 2128 .58228 .34592 .59408 .45457 .22391 .14682

1138 .74286 .37676 .50718 .37913 .27694 .29596 2131 .52260 .29806 .57035 .49162 .25610 .16391

1139 .56723 .35543 .62660 .49403 .24443 .11605 2142 .93850 .48550 .51731 .29040 .09786 .05870

Appendix 4–2.2. L-moments of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
192 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 0.35393 0.25266 0.71387 0.63987 0.48189 0.43958 3463 0.63694 0.40807 0.64067 0.52378 0.31248 0.21677

2206 .67052 .40776 .60812 .48819 .26725 .17663 3476 .54419 .32607 .59918 .46746 .24691 .15818

2238 .30586 .20271 .66274 .51990 .24987 .12889 3485 .85000 .58343 .68639 .54956 .23572 .08493

2240 .29692 .18344 .61782 .47167 .25047 .16892 3507 .57892 .34222 .59113 .52022 .25152 .15211

2242 .50401 .31804 .63103 .46317 .21735 .13365 3546 .66491 .39506 .59415 .47416 .24705 .15719

2244 .54735 .34254 .62582 .49067 .25853 .15417 3547 .59347 .33698 .56781 .41169 .18000 .10054

2247 .48661 .32076 .65917 .52583 .28850 .18353 3579 .61392 .36583 .59588 .46008 .18193 .05975

2309 .69607 .37980 .54563 .43200 .24660 .17323 3642 .62092 .36673 .59063 .48580 .26114 .16846

2312 .60760 .33177 .54604 .43364 .19088 .13022 3646 .57792 .33648 .58223 .46675 .25561 .17036

2334 .87985 .50804 .57742 .43652 .22316 .11547 3668 1.0500 .50964 .48537 .34780 .21279 .07527

2336 .60521 .32544 .53773 .36919 .15707 .10208 3673 .70194 .40065 .57077 .30108 .01472 .01246

2354 .30258 .16927 .55942 .38996 .08867 .02118 3686 .56257 .32766 .58243 .50039 .23238 .13748

2355 .56492 .39524 .69965 .59890 .36209 .23597 3691 .55964 .32514 .58098 .48977 .25354 .15674

2357 .36468 .26695 .73202 .61179 .35689 .22902 3734 1.0415 .67769 .65068 .47945 .20202 .08706

2360 .36542 .25996 .71139 .59495 .34818 .22233 3771 .57238 .33697 .58871 .52358 .24497 .15476

2361 .44842 .29744 .66329 .63240 .46276 .37847 3789 .19301 .10453 .54156 .48778 .30871 .20100

2394 .59759 .35838 .59970 .46871 .24290 .15374 3826 .53332 .28770 .53945 .40767 .20587 .11767

2404 .56749 .34208 .60279 .48348 .25758 .16730 3831 .62209 .36731 .59045 .46970 .25300 .17061

2415 .70254 .40682 .57907 .44808 .22992 .14497 3841 .61400 .34873 .56797 .43860 .22512 .14524

2462 .65739 .37800 .57500 .44304 .21416 .12826 3871 .50084 .29318 .58538 .45739 .23451 .15228

2528 .51872 .30111 .58048 .45996 .22079 .10467 3884 .80261 .54292 .67645 .55535 .26392 .10502

2617 .45011 .27701 .61543 .51070 .29942 .20403 3941 .70378 .40944 .58177 .34473 .08411 .06465

2619 .45186 .25381 .56171 .45135 .25426 .17654 3963 .07143 .03619 .50667 .60000 .43421 .25000

2621 .47724 .27630 .57895 .48042 .25717 .15645 4040 .51728 .29205 .56458 .43574 .21648 .12605

2675 .58595 .34987 .59709 .51522 .28244 .18125 4058 .68600 .42402 .61811 .48495 .25737 .17063

2676 .56478 .32965 .58368 .51872 .23831 .14228 4098 .36181 .19483 .53849 .51615 .26615 .14760

2679 .47557 .30726 .64609 .58082 .33960 .19360 4100 .49105 .29841 .60769 .49806 .27636 .18814

2715 .55850 .32149 .57563 .45421 .23592 .15136 4137 .54034 .30200 .55892 .49308 .23111 .15541

2744 .48874 .28091 .57476 .47111 .24791 .15545 4191 .53088 .33086 .62323 .54384 .30415 .18194

2758 .39350 .28350 .72047 .63667 .39521 .23820 4256 -- -- -- -- -- --

2794 .43091 .29836 .69241 .50599 .16870 -.00965 4257 .67727 .39215 .57901 .47244 .23590 .15247

2797 .19470 .12471 .64052 .52870 .29453 .18969 4258 .56912 .32602 .57286 .51028 .25967 .19879

2811 .46087 .27294 .59222 .50564 .26792 .15050 4278 .58952 .35085 .59514 .46146 .23307 .14445

2813 .51000 .30064 .58950 .48240 .28391 .15941 4299 .32783 .15522 .47348 .32593 .13492 .06345

2814 .21471 .15750 .73356 .64893 .35201 .08353 4300 .51794 .35415 .68377 .54755 .30565 .20245

2815 .47652 .26791 .56222 .54360 .29305 .19919 4305 .48909 .33942 .69397 .55735 .30926 .20103

2818 .55540 .32604 .58704 .43348 .20931 .13802 4307 .53590 .36646 .68382 .54822 .31858 .23174

2986 .75062 .42142 .56143 .38814 .16507 .11109 4309 .63968 .39725 .62102 .49294 .26420 .17332

3005 .54486 .31327 .57496 .46119 .22898 .13887 4311 .66887 .41196 .61591 .48126 .24902 .15552

3033 .25902 .14294 .55185 .49692 .30895 .20904 4313 .67337 .44337 .65844 .55584 .33565 .22608

3034 -- -- -- -- -- -- 4319 .50267 .28589 .56874 .42444 .18235 .09264

3047 .51714 .30857 .59669 .41881 .20079 .16225 4329 .65572 .40083 .61128 .49394 .27656 .18099

3103 .73029 .47019 .64383 .59465 .34268 .18287 4331 -- -- -- -- -- --

3133 .63214 .36522 .57776 .45727 .24378 .16162 4375 .54477 .32636 .59907 .57137 .32053 .22899

3156 .68495 .42144 .61529 .55467 .33301 .23480 4392 .72844 .44784 .61479 .47704 .25136 .16681

3171 .59984 .35342 .58918 .47208 .25018 .15666 4425 .38267 .21804 .56979 .53389 .28791 .16181

3189 .30262 .17856 .59004 .51479 .30431 .18557 4440 .50210 .30426 .60597 .47976 .25163 .16268

3260 .49530 .29115 .58782 .43101 .20742 .13073 4476 .53807 .30288 .56290 .47616 .23961 .15194

3267 .41741 .27327 .65467 .54141 .30873 .21286 4498 .20231 .10603 .52408 .35517 .16027 .03276

3270 .45967 .26178 .56950 .53664 .27624 .17978 4517 .55012 .32435 .58959 .45242 .23373 .15462

3272 .11000 .05442 .49473 .39693 .21940 .12995 4520 .52068 .29832 .57294 .52343 .25111 .15743

3277 .15188 .09588 .63128 .55113 .36774 .37100 4525 .62200 .41081 .66046 .52526 .24375 .12004

3278 .41358 .23674 .57242 .49115 .26297 .14839 4563 .46900 .28176 .60076 .44688 .21533 .16729

3280 .31084 .19783 .63642 .54190 .30373 .18256 4570 .47385 .27957 .59001 .51570 .28635 .17788

3281 .34522 .16901 .48959 .30841 .10088 .03939 4577 .65931 .37203 .56427 .44568 .22846 .15106

3283 .48748 .31736 .65103 .49845 .25598 .15964 4591 .59627 .35752 .59959 .47241 .24820 .15581

3284 .54359 .32073 .59003 .48047 .24551 .14092 4670 .45716 .27087 .59251 .50586 .27185 .15857

3285 .56004 .32271 .57623 .49401 .22726 .13401 4671 .36438 .22519 .61801 .45778 .21233 .13448

3329 .51927 .33069 .63683 .53518 .31312 .21245 4679 .55672 .33283 .59785 .52369 .27861 .17917

3335 .74741 .47391 .63407 .53381 .33551 .24260 4696 .39667 .20438 .51525 .31307 .07735 .01284

3370 .66072 .38093 .57653 .44194 .22805 .14480 4703 .42849 .25401 .59279 .49651 .25407 .12005

3410 .45688 .25270 .55310 .49404 .26015 .16854 4704 .74613 .47075 .63092 .51600 .29696 .19811

3415 .55649 .32677 .58720 .48813 .25667 .16450 4731 .39394 .27912 .70853 .60792 .40458 .31596

3430 .51529 .35335 .68573 .55550 .31884 .21550 4792 .54145 .30381 .56110 .49436 .22800 .14682

3431 .48986 .35425 .72315 .60960 .37379 .26379 4819 .64603 .35485 .54928 .45453 .20885 .13513

3441 .52886 .30881 .58391 .43895 .22149 .13087 4852 .83353 .41581 .49885 .48584 .36665 .23067

3442 .37306 .21972 .58896 .49958 .27911 .17389 4866 .60792 .34827 .57290 .45288 .22617 .14261

3446 .43691 .24430 .55916 .45317 .23986 .14846 4876 .73288 .43123 .58841 .49308 .22906 .13270

3460 .67341 .41207 .61191 .49257 .30148 .26878 4878 .70525 .43357 .61477 .49390 .27037 .17404

3462 .45388 .24642 .54291 .42610 .19866 .10529 4880 .41353 .23314 .56379 .47612 .25500 .15585

Appendix 4–2.2. L-moments of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in Texas—Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 193

4920 0.52297 0.32105 0.61390 0.53713 0.29458 0.17553 5957 0.56197 0.32581 0.57976 0.48800 0.25358 0.16306

4934 .32125 .21339 .66426 .77071 .71381 .68870 5958 .50598 .29103 .57518 .42228 .20322 .11500

4972 .52708 .30565 .57990 .48431 .25997 .16881 5973 .38780 .27195 .70127 .59001 .32269 .17721

4973 .72385 .39077 .53985 .40877 .22112 .15341 5996 .53149 .31358 .59000 .49133 .25574 .15734

4974 .42729 .24980 .58461 .49003 .27015 .17085 6017 .39643 .26202 .66096 .53636 .27871 .15126

4975 .65983 .36992 .56062 .46486 .21880 .15345 6024 .82413 .52495 .63697 .50463 .27945 .20041

4978 .53637 .35184 .65596 .53980 .29984 .18402 6050 .66700 .31868 .47779 .30559 .01394 -.08970

4979 .87500 .51851 .59258 .47256 .28165 .18238 6104 .33209 .18532 .55804 .49792 .28605 .17171

4982 .49909 .29091 .58288 .46857 .25487 .16320 6108 .69790 .39949 .57241 .45397 .22620 .14622

5018 .56288 .32073 .56979 .42667 .20423 .13428 6136 .36119 .19760 .54708 .50948 .26649 .14815

5048 .41983 .25304 .60273 .56899 .32777 .19764 6166 .35561 .22362 .62883 .52295 .26189 .13461

5049 .40777 .23113 .56681 .60860 .38370 .31199 6176 .67907 .41928 .61744 .49130 .27197 .17550

5056 .43200 .18600 .43056 .26882 .67742 .11828 6177 .67324 .39419 .58552 .48127 .25312 .16287

5057 .32030 .22969 .71711 .61836 .38222 .24840 6210 .61514 .36062 .58624 .48398 .24820 .15831

5060 .51243 .35823 .69908 .58728 .35604 .24811 6211 .57346 .35941 .62673 .48355 .24692 .15518

5081 .62706 .36329 .57935 .42741 .20874 .13891 6270 .68212 .39113 .57341 .48900 .24719 .17149

5094 .59331 .34745 .58562 .48717 .25294 .15455 6275 -- -- -- -- -- --

5113 .51941 .32530 .62630 .55458 .31619 .19143 6276 .80679 .42097 .52178 .33688 .10862 .03604

5114 -- -- -- -- -- -- 6335 .61512 .35563 .57815 .43862 .21575 .13472

5123 .61062 .33996 .55674 .44464 .18737 -.00649 6434 .49000 .27063 .55231 .34073 .07576 .01695

5192 .61539 .36264 .58928 .47198 .24262 .14581 6504 .40153 .23111 .57557 .52278 .28409 .16226

5193 .56219 .34157 .60756 .49686 .25674 .15399 6558 .57844 .33983 .58749 .41687 .17826 .16473

5224 .67015 .40388 .60267 .46371 .23763 .14351 6615 .47456 .27664 .58294 .57299 .32580 .22818

5228 .58206 .35158 .60404 .44598 .19502 .10199 6660 .57724 .34098 .59072 .45819 .23090 .14873

5235 .49848 .32646 .65490 .50470 .23795 .14846 6663 .47416 .28777 .60690 .47844 .23534 .10042

5247 .41301 .23204 .56182 .49720 .26074 .14610 6734 .42010 .25470 .60628 .48329 .25652 .16222

5258 .59402 .34778 .58546 .45386 .23357 .14490 6736 .44910 .26316 .58597 .52683 .28492 .16687

5303 .53424 .34190 .63998 .54555 .32999 .23978 6740 1.1488 .55500 .48310 .28771 .16845 .08528

5312 .50318 .29315 .58260 .52125 .27345 .17484 6750 .59253 .41485 .70013 .58322 .36343 .26258

5341 .89345 .57222 .64046 .56904 .36654 .25987 6757 .59909 .36585 .61067 .47372 .24442 .15420

5342 -- -- -- -- -- -- 6775 .39288 .23483 .59772 .46531 .24514 .15789

5348 .66251 .37565 .56701 .44835 .19282 .11269 6776 .41243 .23091 .55987 .49875 .26863 .15914

5358 .47902 .28169 .58806 .47429 .24493 .14262 6788 .65990 .37558 .56915 .42634 .23173 .15542

5398 .63185 .37493 .59339 .46870 .24383 .15693 6792 .33371 .18226 .54616 .49644 .26993 .14330

5410 .41937 .24187 .57674 .50907 .29165 .18549 6794 1.0652 .59980 .56310 .38590 .18999 .12107

5411 .33306 .22217 .66704 .53672 .29472 .18869 6834 .68575 .38787 .56562 .46835 .22227 .15447

5424 .55753 .38532 .69112 .53200 .26741 .16534 6893 .31683 .17325 .54684 .55183 .33683 .21139

5429 .53040 .34102 .64295 .52758 .29334 .18702 6935 .41073 .23011 .56024 .53535 .30759 .20128

5431 .80333 .43980 .54747 .51438 .31970 .15448 6981 .58459 .33971 .58111 .46307 .25511 .16822

5461 .68066 .40485 .59480 .45544 .23276 .15001 7020 .58925 .37129 .63011 .49212 .27166 .19243

5463 .64205 .37463 .58349 .50670 .24868 .16471 7060 .46734 .26585 .56887 .49892 .25532 .14357

5471 .15444 .10963 .70983 .68489 .50322 .38546 7066 .66459 .38652 .58159 .45940 .22847 .14064

5477 .68600 .46167 .67298 .74405 .67395 .62374 7074 .39904 .23302 .58395 .52641 .31257 .19936

5528 .67228 .38148 .56744 .43717 .22394 .14167 7097 .55298 .32896 .59489 .50205 .27141 .14054

5579 -- -- -- -- -- -- 7116 .42330 .24852 .58710 .46677 .25214 .17054

5580 .53862 .27057 .50233 .29332 .09515 .04973 7140 .64117 .42178 .65782 .55862 .33309 .22234

5589 .27459 .15539 .56591 .40078 .17235 .09713 7173 .63225 .44836 .70915 .58104 .34251 .23476

5590 .31286 .18107 .57874 .46157 .21646 .09780 7174 .59305 .40722 .68665 .55402 .31944 .22039

5591 .33345 .17627 .52862 .41195 .20060 .11445 7213 .59979 .35641 .59423 .46753 .25002 .16093

5592 .29171 .16655 .57096 .47691 .26371 .16756 7243 .49317 .28824 .58446 .50641 .26988 .16753

5594 .30718 .17362 .56522 .47096 .24897 .14330 7262 .18533 .10677 .57609 .44882 .22203 .12044

5595 -- -- -- -- -- -- 7274 .62756 .34193 .54485 .44555 .24399 .16515

5596 .34720 .17945 .51684 .53912 .26231 .15472 7300 .55221 .32328 .58542 .45190 .23152 .14993

5600 .34529 .20166 .58403 .49824 .28974 .18222 7311 .59844 .34608 .57830 .51767 .28823 .15480

5618 .54432 .31595 .58044 .43414 .17689 .06824 7363 .57857 .29709 .51349 .24783 .01853 .03859

5650 .54200 .23321 .43028 .35929 .36565 .19130 7422 .54083 .33301 .61573 .52348 .29200 .18544

5656 .42810 .24212 .56556 .55827 .29191 .18703 7431 .41707 .24578 .58931 .51411 .29043 .18036

5658 .43862 .26684 .60835 .50807 .28848 .18703 7481 .33524 .20130 .60046 .56724 .36014 .22793

5661 .54125 .34256 .63291 .63377 .38209 .26445 7497 .55378 .32143 .58043 .52080 .25416 .16416

5666 .46889 .27443 .58527 .49242 .28487 .17953 7498 .58267 .34330 .58918 .53049 .28042 .20135

5695 .62644 .35954 .57394 .44551 .23274 .15489 7499 .52972 .29998 .56629 .49433 .25295 .16529

5742 .25048 .15138 .60437 .50454 .24380 .14163 7531 .56940 .31973 .56153 .40715 .17577 .08519

5766 .71529 .46009 .64322 .52953 .26075 .10359 7534 .57233 .36311 .63445 .53740 .33522 .25259

5770 .44109 .25478 .57762 .50043 .27133 .16013 7556 .56851 .33437 .58814 .51186 .27766 .18297

5775 .34643 .19049 .54988 .32881 -.04007 -.06288 7594 .67740 .39966 .59000 .45394 .23167 .15121

5779 .65727 .39199 .59639 .48066 .24625 .07866 7596 .68920 .41133 .59683 .41483 .16078 .08494

5840 .56183 .33553 .59722 .46412 .22953 .13560 7608 .53075 .33766 .63619 .49275 .25231 .15739

5890 .31010 .20684 .66701 .54252 .30110 .19101 7622 .22227 .17790 .80037 .72060 .47714 .32193

5891 .36900 .19846 .53783 .39619 .17842 .10733 7700 .61011 .37954 .62208 .48615 .25360 .16077

5897 .58688 .34584 .58928 .52189 .25518 .16707 7706 .46979 .28225 .60079 .51872 .28742 .17526

Appendix 4–2.2. L-moments of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in Texas—Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
194 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 0.56292 0.35054 0.62271 0.52325 0.29268 0.17041 8910 0.64227 0.36236 0.56418 0.34553 0.04315 -0.06205

7745 .66359 .41582 .62663 .48903 .25968 .17343 8911 .49996 .31913 .63831 .50120 .26168 .16132

7922 .23802 .14097 .59224 .48519 .27025 .16887 8924 .29555 .15861 .53665 .43813 .22773 .12618

7936 .68410 .40162 .58708 .47591 .25011 .17067 8929 .80462 .46837 .58210 .34468 .01082 -.05684

7943 .36181 .24071 .66529 .52896 .28020 .17169 8942 .66393 .38705 .58297 .49014 .24373 .15350

7944 .36643 .25720 .70190 .56645 .30363 .17095 8944 .57103 .35054 .61388 .47104 .24359 .15613

7945 .41795 .29588 .70794 .58281 .33753 .22427 8996 .57296 .35833 .62541 .50243 .27332 .17829

7947 .63667 .40256 .63230 .57903 .35601 .25774 9014 .71174 .34079 .47881 .28837 .08279 .01061

7948 .52700 .34037 .64587 .53037 .29274 .18012 9037 .31744 .19083 .60117 .54670 .35125 .24935

7951 .62649 .35425 .56546 .42364 .20625 .12570 9106 .28028 .17904 .63879 .59563 .40198 .30038

7953 .42534 .26916 .63282 .52227 .28598 .16155 9107 .32425 .19487 .60097 .47751 .23448 .14193

7981 .50168 .31947 .63680 .49738 .23447 .11785 9129 .33545 .23287 .69419 .62100 .38272 .23748

7990 .43895 .30823 .70219 .59780 .36668 .25148 9163 .51821 .30372 .58608 .48806 .26296 .16388

7992 .57893 .33430 .57744 .42384 .09079 -.04199 9213 .48326 .30749 .63628 .48717 .25569 .17568

7997 .45784 .27970 .61092 .48360 .23637 .11650 9214 .84455 .47250 .55947 .44385 .21225 .10906

7999 .32737 .21971 .67113 .55778 .34309 .24567 9222 .48605 .30582 .62920 .47975 .23752 .14530

8022 .40000 .24731 .61828 .48905 .20516 .08084 9248 .42321 .24287 .57388 .44221 .18637 .07647

8023 .43775 .25844 .59038 .53039 .30366 .19049 9266 .50084 .28466 .56836 .43403 .19826 .08590

8047 .54581 .31859 .58371 .47283 .23744 .14257 9270 .31797 .17015 .53509 .53970 .30384 .16925

8060 .42507 .28908 .68009 .56564 .29365 .13878 9295 .19757 .12254 .62024 .51481 .27985 .16032

8062 .62889 .43338 .68913 .54209 .27677 .15435 9304 -- -- -- -- -- --

8068 .25846 .17182 .66479 .59214 .35957 .22701 9307 .54451 .29518 .54211 .43459 .22759 .13901

8081 .53196 .33433 .62848 .55202 .32469 .21240 9328 .41807 .24207 .57901 .43655 .19480 .11087

8089 .46256 .26012 .56235 .35282 .08976 .01938 9329 .45312 .26621 .58749 .28422 -.10783 -.14229

8221 .66714 .31671 .47473 .36685 .25215 .17857 9345 -- -- -- -- -- --

8252 .42349 .24612 .58118 .50877 .27803 .16081 9363 .40067 .27787 .69353 .57477 .33660 .22282

8265 .65110 .42136 .64714 .54244 .32155 .22324 9364 .46697 .32692 .70008 .57804 .33939 .22826

8289 .45818 .21741 .47450 .21799 .03403 .02819 9365 .29342 .18173 .61934 .64189 .46226 .33322

8305 .28242 .15478 .54806 .52774 .32159 .18574 9371 .55250 .31683 .57346 .42474 .17230 .07776

8335 .69724 .40366 .57894 .43473 .21894 .14295 9417 .55975 .33736 .60269 .45931 .21569 .12008

8400 .34556 .20450 .59178 .51740 .32474 .22596 9419 .46498 .30584 .65775 .50046 .24304 .14201

8445 .60356 .38339 .63521 .51592 .28267 .18228 9435 .44494 .24555 .55187 .44202 .24529 .18550

8446 .53538 .31557 .58944 .49451 .24512 .13180 9491 .59056 .35327 .59820 .48256 .24535 .14618

8451 .43972 .26464 .60185 .48292 .25022 .15473 9499 .46372 .26680 .57535 .50934 .25773 .14736

8531 .57665 .33267 .57691 .45700 .24236 .15722 9522 .97529 .58603 .60087 .40115 .08166 -.04390

8541 .56910 .32296 .56749 .42333 .22318 .14837 9527 .39279 .21769 .55422 .52337 .27086 .15206

8544 .62016 .37641 .60695 .52476 .28477 .18188 9532 .54585 .31966 .58563 .48331 .25707 .16546

8545 .27409 .13435 .49017 .23751 .06235 .10152 9544 1.2500 1.1260 .90080 .96803 .95560 .90586

8563 .60225 .34704 .57623 .50810 .25359 .17376 9565 .49281 .28611 .58058 .49922 .27189 .17028

8566 .45827 .26672 .58201 .44257 .21162 .11705 9570 .44895 .25001 .55688 .54415 .28969 .18762

8583 .46377 .26344 .56804 .53155 .23618 .12869 9574 .46400 .27033 .58261 .54763 .23461 .10686

8584 .55102 .31513 .57191 .46427 .22208 .13212 9588 .46156 .29091 .63028 .56205 .32875 .19226

8623 .56003 .31251 .55802 .47046 .23051 .14147 9665 .62102 .36676 .59057 .47713 .24833 .15977

8625 .54794 .32857 .59965 .47795 .25483 .17042 9715 .56662 .33031 .58295 .46316 .23082 .14322

8630 .45005 .25606 .56896 .46880 .22741 .12034 9729 .45746 .29530 .64552 .49218 .24455 .15074

8631 .48191 .28465 .59068 .48584 .26488 .16336 9772 .58206 .38459 .66074 .55900 .33413 .22609

8646 .56154 .33324 .59344 .46260 .23447 .14701 9814 .56526 .32758 .57952 .40171 .14923 .06278

8647 .38880 .22296 .57346 .53730 .29544 .17091 9815 .59768 .36084 .60374 .50487 .28016 .18042

8677 .51027 .28299 .55459 .43434 .21744 .11862 9816 .56200 .35600 .63345 .51555 .30519 .22460

8696 .66034 .36342 .55035 .36586 .17278 .14793 9817 .52068 .29341 .56350 .48572 .24222 .15782

8743 .66414 .39294 .59165 .47223 .24897 .16194 9829 .33623 .19821 .58949 .54758 .33076 .19181

8761 .39032 .21712 .55628 .51999 .29611 .18399 9830 .27006 .16132 .59735 .48159 .23788 .12953

8778 .61075 .35629 .58337 .48709 .24435 .15775 9858 .44050 .24903 .56534 .45769 .25360 .16391

8845 .55679 .34543 .62039 .53905 .29900 .18254 9893 .52015 .30502 .58641 .48279 .25607 .16028

8859 .67061 .38656 .57643 .43403 .21847 .14410 9916 .68413 .38861 .56804 .44633 .20793 .12509

8898 .64716 .38377 .59300 .47203 .25927 .16993 9976 .47588 .29158 .61272 .53327 .29957 .18024

8908 .51930 .32031 .61681 .51075 .29940 .22084

Appendix 4–2.2. L-moments of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in Texas—Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 195

Appendix 4–2.3. L-moments of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0015 0.16143 0.12905 0.79941 0.81255 0.70849 0.64207 1154 0.45795 0.31144 0.68006 0.53824 0.28282 0.16880

0016 .45129 .29110 .64505 .49382 .25124 .15931 1165 .47766 .28672 .60025 .45850 .22182 .13145

0050 .58143 .32808 .56427 .41163 .19275 .12250 1185 .41264 .22963 .55650 .43287 .20710 .11926

0054 .35962 .21406 .59523 .44374 .18470 .08440 1186 .53675 .34684 .64619 .54719 .32244 .18867

0120 .90500 .45067 .49798 .21676 .02554 -.00634 1188 .39700 .24167 .60873 .48966 .27192 .21287

0145 .42894 .31151 .72624 .64928 .45010 .33903 1245 .76815 .45174 .58809 .40646 .21405 .21783

0146 .41636 .22708 .54539 .32619 .07886 .01056 1246 .60781 .36015 .59254 .52588 .26316 .18460

0174 .37204 .20304 .54575 .51982 .28577 .17755 1267 .44657 .29088 .65137 .56614 .37211 .28621

0178 .29682 .18755 .63188 .57002 .30733 .17407 1304 .56706 .34893 .61533 .50300 .28993 .20435

0179 .31502 .18332 .58193 .46825 .21732 .10430 1325 .66800 .41826 .62614 .50575 .26896 .16918

0202 .53717 .30028 .55900 .49693 .22461 .12394 1429 .58831 .35667 .60627 .49930 .27815 .17917

0206 .63059 .34887 .55324 .45146 .22538 .15401 1431 .64616 .38919 .60231 .47754 .24437 .14927

0208 -- -- -- -- -- -- 1432 .64555 .38974 .60374 .46162 .23075 .14068

0211 .35804 .23554 .65784 .52636 .28842 .18619 1433 .65412 .38903 .59474 .47729 .26321 .16621

0244 .55125 .30706 .55703 .33180 .08285 .04459 1434 .63978 .38112 .59570 .47233 .24406 .15227

0248 .40087 .23004 .57385 .51966 .29434 .17576 1435 .66285 .39584 .59718 .45722 .22615 .13253

0262 .67199 .39095 .58178 .45297 .23572 .15515 1436 .66834 .39695 .59393 .47264 .25611 .16629

0271 .92136 .51539 .55938 .40585 .20871 .11058 1437 .54870 .40470 .73757 .61313 .32704 .16792

0380 .69692 .44345 .63631 .53310 .32043 .22596 1438 .64075 .38446 .60002 .46675 .23408 .13862

0394 .56222 .33278 .59190 .48390 .38111 .21846 1462 -- -- -- -- -- --

0408 1.0915 .57296 .52494 .31774 .16430 .12722 1492 .56161 .32915 .58609 .50515 .26260 .16568

0427 .55263 .33947 .61429 .57153 .28239 .16999 1500 .65519 .37219 .56807 .35382 .05419 -.00250

0428 .49405 .33577 .67964 .53670 .28615 .17995 1528 .54585 .33216 .60851 .53311 .28735 .17686

0429 .60420 .40547 .67109 .52717 .28968 .19427 1541 .74032 .43165 .58306 .46682 .19860 .13581

0463 .52313 .29680 .56736 .49974 .30789 .21163 1569 .57195 .38107 .66627 .56563 .36439 .27699

0493 .79176 .31684 .40017 .25607 .16762 .07348 1632 .47857 .26095 .54527 .12044 -.25730 .08212

0495 .35584 .20172 .56689 .45533 .25707 .17333 1641 .45640 .25184 .55180 .41393 .19700 .12920

0496 .24148 .13943 .57739 .46253 .25364 .13889 1646 .42683 .24159 .56600 .52231 .27831 .16404

0498 .17750 .05705 .32138 -.14263 -.02169 .19079 1663 .98571 .65017 .65960 .57720 .32154 .20063

0509 .62489 .38060 .60907 .51808 .29025 .19091 1671 .61846 .37451 .60556 .50930 .27122 .16945

0518 .63643 .37509 .58936 .48186 .24994 .16232 1680 .60559 .35968 .59394 .47650 .26361 .17471

0521 .51606 .29314 .56804 .45243 .24887 .11467 1694 .53493 .29312 .54795 .44674 .15656 .09537

0556 .53225 .30861 .57983 .47878 .26197 .16313 1696 .48797 .27932 .57240 .44126 .22830 .15306

0569 .70980 .44806 .63125 .54109 .30480 .19473 1697 .48153 .28922 .60063 .50264 .26964 .14365

0572 .62958 .39388 .62562 .51315 .29092 .19736 1698 .47672 .27769 .58251 .51092 .28532 .17834

0576 .50344 .34736 .68997 .58793 .36764 .27724 1720 .52454 .32286 .61551 .58104 .27160 .12342

0580 .62749 .40311 .64242 .55042 .32855 .21772 1761 .33973 .20388 .60013 .42749 .19509 .12248

0587 .66976 .42027 .62749 .49246 .26130 .17778 1773 .73112 .41666 .56989 .45379 .22678 .14879

0605 .68592 .34341 .50066 .38795 .21192 .13500 1810 .43583 .26261 .60254 .52146 .34492 .25093

0639 .58038 .35493 .61155 .54921 .30783 .19795 1823 .77043 .44743 .58075 .34349 .03860 -.01276

0655 -- -- -- -- -- -- 1870 .61994 .35903 .57913 .41864 .17374 .07860

0665 .62306 .38037 .61049 .47557 .24635 .15517 1875 .95647 .45897 .47986 .31407 .09296 .09516

0689 .60172 .37554 .62410 .52978 .30809 .20182 1876 .61776 .36766 .59516 .44209 .20161 .10574

0690 .50626 .29168 .57614 .54559 .28534 .19097 1889 .53026 .35447 .66847 .50743 .25691 .17116

0691 .59178 .35389 .59801 .45546 .22406 .13677 1903 .46218 .24957 .53999 .49894 .24544 .18060

0708 .54296 .31309 .57663 .55750 .32969 .23420 1914 .78200 .45795 .58561 .55040 .39231 .38574

0738 .63723 .37040 .58127 .45686 .24612 .16416 1920 .66586 .38428 .57713 .46613 .26941 .20409

0776 .46576 .28017 .60154 .51476 .28818 .17936 1921 .71409 .41177 .57663 .45614 .23180 .15172

0779 .44195 .25229 .57085 .56257 .28191 .16635 1937 .71938 .40650 .56508 .42652 .22590 .15722

0784 .44381 .26461 .59623 .53440 .30092 .17657 1956 .67201 .40360 .60058 .48670 .26780 .17886

0786 .36351 .23707 .65217 .51651 .27437 .16832 1970 1.0913 .74734 .68484 .59879 .43039 .36674

0917 .74279 .44610 .60057 .47327 .25477 .16769 2014 .45344 .32836 .72413 .59092 .32651 .19473

0923 1.0859 .53425 .49197 .33561 .12427 .01746 2015 .48713 .34857 .71556 .59692 .35767 .23930

0926 .59960 .35254 .58797 .47081 .24168 .14692 2019 .87720 .47200 .53808 .28423 .05080 .06433

0950 .28244 .17189 .60858 .57900 .40621 .32166 2024 .64673 .36861 .56995 .45129 .23976 .15871

0996 .99458 .60020 .60347 .48483 .29877 .23995 2042 .15583 .05795 .37190 -.03895 -.06580 .02876

1013 .55510 .35892 .64659 .65418 .41069 .29594 2043 .24628 .14367 .58337 .45368 .20791 .10084

1017 .51942 .30733 .59167 .49159 .26487 .16922 2048 .52945 .32986 .62303 .56520 .31803 .19023

1042 1.2165 .59082 .48567 .50431 .34382 .22325 2050 .37957 .28729 .75689 .66537 .43603 .29936

1048 .54259 .28077 .51746 .30982 .10305 .04091 2051 .47015 .27176 .57802 .44790 .22777 .16273

1053 .52897 .32266 .60998 .49211 .26125 .16124 2053 .22500 .14878 .66123 .63742 .45402 .31927

1057 .47928 .27261 .56879 .45129 .24397 .15769 2073 .61071 .38210 .62567 .52260 .30985 .21775

1063 1.0005 .59535 .59508 .51198 .36594 .29763 2082 .40179 .23454 .58373 .50748 .28743 .17974

1068 .63746 .36513 .57279 .45372 .22985 .14660 2086 .63836 .37021 .57995 .46404 .23594 .14967

1080 .34497 .18448 .53476 .45828 .28923 .20703 2088 .75306 .41641 .55296 .37999 .10573 .10543

1081 .64451 .37024 .57446 .43476 .21597 .13117 2090 .61862 .34960 .56512 .48258 .23256 .16572

1133 .23125 .15967 .69045 .52699 .22311 .09873 2096 .62319 .35697 .57281 .46301 .24188 .16102

1136 .42228 .30791 .72917 .61723 .37628 .24940 2128 .64898 .37648 .58011 .44257 .22154 .15064

1138 .82105 .43509 .52991 .34853 .17125 .20881 2131 .57184 .32406 .56670 .47439 .24114 .15605

1139 .64371 .38763 .60218 .44511 .19822 .09487 2142 .98789 .48532 .49127 .28339 .09465 .06287

Appendix 4–2.3. L-moments of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
196 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 0.43087 0.32411 0.75222 0.71941 0.61026 0.57505 3463 0.65021 0.41812 0.64305 0.51658 0.29446 0.20259

2206 .71822 .43547 .60631 .49066 .27650 .18865 3476 .58410 .34957 .59846 .46830 .24610 .15357

2238 .33135 .21630 .65277 .50259 .23486 .12016 3485 .96591 .62842 .65060 .50541 .18597 .09606

2240 .32851 .20192 .61467 .48323 .26214 .15760 3507 .63263 .37431 .59167 .50526 .23849 .14583

2242 .55917 .34753 .62151 .44882 .20882 .13170 3546 .72581 .42719 .58857 .46534 .24410 .15998

2244 .60364 .37398 .61954 .48019 .25069 .15244 3547 .64342 .36110 .56122 .39326 .15740 .08370

2247 .52930 .34553 .65280 .50036 .25253 .15667 3579 .62987 .37170 .59012 .44984 .17253 .05783

2309 .75811 .40429 .53329 .41807 .23788 .16216 3642 .67255 .39580 .58851 .48389 .26447 .17560

2312 .66756 .36025 .53965 .42275 .19504 .13765 3646 .61222 .35369 .57771 .45996 .24973 .16747

2334 .95317 .52912 .55511 .41005 .20774 .10171 3668 1.2600 .54347 .43133 .37830 .15546 .00173

2336 .63199 .33779 .53448 .36028 .14725 .09400 3673 .87040 .48803 .56070 .26008 -.02863 -.00590

2354 .34741 .18786 .54076 .37970 .08268 -.00345 3686 .61973 .35903 .57933 .48126 .21617 .12907

2355 .61722 .42914 .69528 .59753 .36538 .23242 3691 .60742 .35211 .57969 .48066 .24786 .15502

2357 .39602 .28781 .72676 .60722 .35832 .23523 3734 1.2275 .76954 .62691 .43032 .15685 .06485

2360 .40153 .28264 .70393 .58143 .33332 .21134 3771 .61678 .36190 .58676 .50819 .23595 .15185

2361 .48941 .32639 .66690 .62773 .45205 .37071 3789 .20771 .11391 .54842 .47919 .28933 .18440

2394 .64610 .38582 .59716 .46866 .24726 .15863 3826 .58363 .31391 .53785 .40861 .20721 .12027

2404 .61678 .37039 .60053 .47772 .25359 .16578 3831 .67470 .39314 .58268 .46056 .25205 .17220

2415 .76228 .43787 .57442 .44157 .22745 .14554 3841 .66651 .38328 .57506 .45726 .24423 .15098

2462 .70507 .40265 .57108 .43926 .21724 .13682 3871 .55103 .32010 .58092 .46002 .24614 .16381

2528 .55897 .32366 .57903 .44663 .19628 .08049 3884 .87905 .57290 .65173 .51916 .24431 .09439

2617 .48701 .29634 .60849 .50883 .30062 .20745 3941 .81375 .47949 .58923 .38698 .14497 .10783

2619 .49705 .27237 .54798 .44307 .24953 .17110 3963 .07143 .03619 .50667 .60000 .43421 .25000

2621 .51111 .29366 .57456 .47034 .24951 .15448 4040 .54384 .30844 .56715 .44351 .23179 .14926

2675 .63087 .37736 .59817 .51544 .29102 .19665 4058 .79154 .51197 .64680 .58065 .43040 .39313

2676 .61366 .36056 .58756 .51022 .23227 .13740 4098 .39255 .21347 .54379 .50324 .25589 .14725

2679 .52370 .33875 .64685 .57517 .33183 .19313 4100 .52959 .31614 .59695 .48804 .27238 .19034

2715 .60306 .34301 .56879 .44327 .23055 .15028 4137 .59677 .33240 .55700 .47198 .21853 .15180

2744 .53495 .30667 .57327 .46494 .24168 .15387 4191 .57801 .35784 .61909 .53459 .29460 .17790

2758 .44000 .30874 .70169 .61251 .36542 .21129 4256 -- -- -- -- -- --

2794 .43091 .29836 .69241 .50599 .16870 -.00965 4257 .74200 .42464 .57230 .45994 .23314 .15500

2797 .20932 .13407 .64048 .52785 .29689 .19468 4258 .63791 .36231 .56797 .49072 .25725 .20023

2811 .50045 .29640 .59228 .49900 .26248 .15131 4278 .63350 .37507 .59207 .45114 .21889 .13312

2813 .56667 .31516 .55616 .45088 .27980 .13580 4299 .33832 .15895 .46983 .33319 .14650 .07384

2814 .21471 .15750 .73356 .64893 .35201 .08353 4300 .57164 .38724 .67741 .54318 .30771 .20747

2815 .50931 .28340 .55644 .52275 .28467 .20091 4305 .54326 .37362 .68774 .54955 .30451 .19990

2818 .59766 .35063 .58666 .43966 .22245 .14878 4307 .61158 .41849 .68429 .54913 .31912 .22790

2986 .82090 .45994 .56029 .38734 .16333 .10479 4309 .68975 .42747 .61974 .49222 .26590 .17588

3005 .58474 .33214 .56801 .44820 .21942 .13795 4311 .72724 .44314 .60934 .47620 .24820 .15699

3033 .26944 .14961 .55527 .49553 .30138 .19998 4313 .75944 .48489 .63849 .53904 .31899 .20546

3034 -- -- -- -- -- -- 4319 .53857 .30346 .56346 .41970 .18417 .10404

3047 .53235 .31296 .58788 .40829 .19968 .16157 4329 .71182 .43107 .60559 .48784 .27248 .17655

3103 .75242 .48805 .64864 .58730 .32086 .15765 4331 -- -- -- -- -- --

3133 .68451 .39154 .57200 .44844 .24132 .16327 4375 .59985 .35960 .59948 .55183 .30140 .21324

3156 .76186 .46437 .60952 .53678 .31958 .22496 4392 .80797 .48450 .59965 .46170 .24445 .16628

3171 .64516 .37778 .58556 .46428 .24207 .15085 4425 .41396 .23723 .57306 .52309 .27700 .16172

3189 .33157 .19393 .58489 .51964 .30666 .18460 4440 .54600 .32874 .60210 .47456 .24874 .16198

3260 .53633 .31391 .58530 .42876 .21074 .13734 4476 .58785 .32894 .55957 .46025 .22722 .14858

3267 .43664 .28795 .65948 .55226 .32272 .22065 4498 .23909 .11836 .49506 .23605 .04506 .00512

3270 .50084 .28400 .56704 .51473 .26043 .17510 4517 .60022 .35072 .58432 .44972 .23455 .15241

3272 .11478 .05858 .51033 .38944 .16300 .05834 4520 .57657 .33029 .57284 .50777 .24716 .16130

3277 .16200 .10590 .65373 .56489 .35010 .31797 4525 .72567 .49748 .68555 .57199 .31678 .19170

3278 .43837 .24954 .56925 .47917 .25125 .14151 4563 .50250 .29245 .58198 .41481 .20251 .17938

3280 .32658 .20757 .63558 .53108 .28899 .16986 4570 .51603 .30267 .58653 .50001 .27178 .17020

3281 .35289 .17029 .48257 .29522 .09804 .04112 4577 .71114 .40044 .56309 .44476 .23258 .15518

3283 .53999 .34674 .64213 .49012 .25567 .16342 4591 .64716 .38237 .59084 .46401 .24728 .16029

3284 .59289 .34760 .58629 .47361 .24053 .14099 4670 .49760 .29500 .59285 .49888 .26816 .16351

3285 .61897 .35705 .57685 .48430 .22769 .14155 4671 .41608 .25513 .61318 .44591 .20378 .13226

3329 .56648 .35985 .63524 .53357 .31548 .21734 4679 .61539 .36687 .59615 .51106 .27029 .18014

3335 .83365 .51495 .61770 .51260 .31174 .22141 4696 .34286 .17374 .50673 .32321 .12138 .10465

3370 .70635 .40366 .57147 .43447 .22464 .14466 4703 .44620 .26107 .58509 .48355 .23768 .11194

3410 .49702 .27400 .55128 .47929 .24837 .16418 4704 .81567 .50671 .62122 .50501 .28525 .18575

3415 .61168 .35651 .58284 .47604 .25052 .16318 4731 .43524 .30140 .69250 .59030 .38960 .30024

3430 .57651 .39205 .68004 .54901 .31630 .21654 4792 .59356 .33194 .55924 .47381 .21460 .14263

3431 .58146 .42198 .72572 .61565 .38870 .28251 4819 .70660 .38773 .54873 .43846 .19369 .12328

3441 .56756 .34327 .60481 .47635 .25388 .14030 4852 .88562 .43246 .48831 .43799 .36173 .27439

3442 .40297 .23379 .58018 .48824 .26981 .16738 4866 .65867 .37554 .57015 .44797 .22646 .14703

3446 .46630 .25888 .55519 .44628 .23181 .14451 4876 .78102 .45895 .58763 .48930 .23697 .14733

3460 .72268 .43112 .59656 .46500 .29291 .27538 4878 .77095 .46895 .60828 .48617 .26503 .17143

3462 .47910 .25608 .53450 .41430 .19217 .10754 4880 .44429 .25197 .56715 .47727 .25678 .15928

Appendix 4–2.3. L-moments of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 197

4920 0.55790 0.34102 0.61126 0.52557 0.28264 0.16853 5957 0.60621 0.35072 0.57854 0.47865 0.24368 0.15759

4934 .36714 .24857 .67704 .72874 .63218 .57854 5958 .55683 .31708 .56943 .39835 .17331 .09320

4972 .57252 .33030 .57692 .47828 .25845 .17262 5973 .43170 .29738 .68886 .56476 .29912 .16703

4973 .78877 .42110 .53388 .40540 .22767 .16567 5996 .58372 .34278 .58723 .48115 .24694 .15512

4974 .46310 .27175 .58681 .49185 .27505 .18190 6017 .42366 .27389 .64649 .51247 .25975 .14360

4975 .72132 .40183 .55707 .45240 .21669 .15223 6024 .89760 .55998 .62386 .48749 .26730 .19383

4978 .58888 .37590 .63833 .51259 .27771 .16848 6050 .66700 .31868 .47779 .30559 .01394 -.08970

4979 .91667 .52581 .57361 .46734 .28798 .17044 6104 .35623 .20056 .56301 .49583 .28551 .17778

4982 .53420 .30903 .57849 .46029 .24676 .15941 6108 .75986 .43071 .56683 .44402 .22375 .14620

5018 .60575 .33944 .56037 .41482 .19654 .12908 6136 .38978 .21386 .54868 .49764 .25826 .15094

5048 .45312 .27348 .60355 .55392 .31091 .19020 6166 .37880 .23154 .61123 .50281 .24763 .13020

5049 .42424 .23843 .56200 .59627 .38241 .31264 6176 .73131 .44628 .61024 .49030 .27808 .17994

5056 .43200 .18600 .43056 .26882 .67742 .11828 6177 .73907 .43223 .58482 .47611 .25207 .16455

5057 .34685 .24742 .71332 .60966 .36965 .23458 6210 .66696 .38885 .58302 .47332 .24322 .15781

5060 .54554 .38362 .70320 .59089 .35732 .24606 6211 .63520 .38851 .61163 .46479 .23232 .14700

5081 .68286 .39070 .57216 .41996 .20647 .13833 6270 .74451 .42608 .57229 .47845 .24304 .16873

5094 .65107 .37798 .58054 .47101 .24168 .15097 6275 -- -- -- -- -- --

5113 .57807 .36279 .62760 .54808 .31159 .19577 6276 .94125 .48766 .51810 .28786 .06129 .03673

5114 -- -- -- -- -- -- 6335 .66402 .37982 .57200 .43331 .21671 .14067

5123 .65133 .40114 .61588 .56622 .34537 .13957 6434 .59316 .33304 .56147 .38501 .12317 .09667

5192 .67071 .39392 .58732 .46726 .24272 .14888 6504 .43757 .25327 .57880 .51380 .27903 .16758

5193 .61816 .37378 .60466 .49072 .25302 .15593 6558 .61700 .36033 .58401 .38924 .14039 .14724

5224 .74911 .45137 .60254 .45881 .23770 .15060 6615 .51704 .30625 .59231 .57186 .33143 .23739

5228 .60088 .36349 .60493 .44652 .19722 .10760 6660 .63393 .37057 .58456 .43745 .21262 .13198

5235 .54833 .34417 .62767 .46800 .22067 .15210 6663 .51534 .31139 .60424 .46915 .22971 .10018

5247 .44904 .25136 .55976 .48411 .25125 .14700 6734 .46053 .27556 .59834 .48063 .26275 .16918

5258 .64784 .37852 .58428 .45136 .22708 .13542 6736 .48322 .28436 .58847 .52295 .28205 .16979

5303 .58266 .37072 .63626 .53840 .31839 .23175 6740 1.3020 .69067 .53047 .28977 .04037 -.06832

5312 .55030 .32100 .58333 .51106 .26515 .17449 6750 .67959 .47296 .69594 .58005 .36184 .25795

5341 .95963 .59707 .62218 .55221 .36238 .25745 6757 .65268 .39363 .60310 .46396 .23803 .15273

5342 -- -- -- -- -- -- 6775 .42834 .25665 .59917 .46809 .24944 .16117

5348 .72938 .40953 .56148 .43579 .19252 .12008 6776 .44429 .24821 .55866 .48733 .25994 .15658

5358 .51323 .30160 .58764 .47250 .24164 .13929 6788 .72855 .40662 .55811 .42184 .23631 .15500

5398 .68235 .40207 .58925 .46208 .23924 .15408 6792 .35232 .19322 .54843 .48636 .25989 .14026

5410 .44991 .25953 .57684 .50405 .28742 .18705 6794 1.2356 .65647 .53129 .37400 .14830 .04740

5411 .36402 .24008 .65952 .52489 .28528 .18429 6834 .74166 .41820 .56387 .45812 .21891 .15278

5424 .63606 .42780 .67258 .51357 .26322 .17084 6893 .33657 .18676 .55489 .55179 .33434 .21392

5429 .57377 .36646 .63868 .51650 .27962 .17690 6935 .44197 .24779 .56065 .52618 .30362 .20257

5431 .90375 .47725 .52808 .45918 .26568 .11987 6981 .63026 .36232 .57487 .45840 .25344 .16763

5461 .74350 .43723 .58807 .45232 .23483 .15204 7020 .67740 .40866 .60328 .48639 .29543 .22130

5463 .69488 .40260 .57938 .48912 .23822 .16119 7060 .51124 .28890 .56509 .48536 .24602 .14582

5471 .16680 .11500 .68945 .67924 .50136 .37977 7066 .72905 .41858 .57414 .44452 .21826 .13573

5477 .71458 .48868 .68386 .74244 .65843 .59902 7074 .42747 .24958 .58386 .51795 .30507 .19955

5528 .72100 .40587 .56293 .43276 .22321 .14237 7097 .60279 .35793 .59379 .50503 .28137 .15921

5579 -- -- -- -- -- -- 7116 .44975 .26128 .58094 .45724 .24088 .16142

5580 .57852 .29476 .50950 .29608 .10343 .06746 7140 .69616 .45537 .65411 .55134 .32681 .21929

5589 .28895 .16246 .56223 .39308 .16693 .09547 7173 .69484 .48964 .70468 .57491 .33452 .22413

5590 .34047 .20189 .59297 .50349 .28067 .16859 7174 .66183 .44715 .67563 .53947 .30819 .21320

5591 .35226 .18544 .52643 .41346 .21164 .12931 7213 .64771 .38005 .58677 .45846 .24293 .15435

5592 .31633 .17982 .56845 .46962 .25758 .16783 7243 .53950 .31347 .58105 .49496 .26346 .17258

5594 .31795 .18192 .57217 .47122 .24571 .14634 7262 .19078 .10951 .57400 .43768 .21000 .11324

5595 -- -- -- -- -- -- 7274 .66833 .36328 .54357 .44510 .25046 .16861

5596 .37483 .19452 .51897 .52049 .25102 .15500 7300 .58885 .34342 .58320 .44781 .22846 .14830

5600 .36809 .21407 .58156 .50132 .29722 .19172 7311 .63833 .35967 .56345 .51850 .27762 .15910

5618 .61030 .34371 .56318 .41042 .14197 .04799 7363 .60000 .30211 .50351 .21687 .00838 .06075

5650 .57053 .25713 .45070 .35194 .29942 .11496 7422 .59120 .36132 .61117 .51462 .28644 .18749

5656 .47169 .26812 .56842 .54015 .28278 .18709 7431 .44167 .25867 .58566 .50374 .27909 .17483

5658 .47317 .28667 .60585 .50500 .28685 .18966 7481 .35839 .21637 .60372 .56428 .35652 .23074

5661 .58778 .38030 .64702 .64901 .41615 .30700 7497 .61326 .35805 .58386 .51478 .25776 .17275

5666 .48229 .28176 .58423 .47543 .26354 .17689 7498 .62810 .36697 .58425 .50959 .26564 .19588

5695 .67400 .38381 .56945 .44036 .23170 .15618 7499 .58092 .32815 .56489 .48349 .24727 .16679

5742 .27684 .15772 .56971 .47916 .22896 .15492 7531 .61446 .34354 .55909 .40298 .17424 .08837

5766 .81067 .50441 .62222 .48576 .20481 .05951 7534 .62241 .38714 .62201 .52607 .32238 .24118

5770 .47654 .27552 .57817 .49627 .26966 .16382 7556 .61674 .36224 .58735 .50038 .26629 .17541

5775 .37308 .20038 .53711 .25982 -.10434 -.01392 7594 .72191 .42456 .58810 .45674 .23869 .15682

5779 .76105 .42322 .55609 .44407 .19698 .03313 7596 .71808 .42760 .59547 .40817 .15424 .08522

5840 .62355 .36974 .59296 .45394 .21902 .12773 7608 .57530 .36168 .62868 .48192 .24613 .15629

5890 .34013 .22639 .66561 .54185 .30379 .19499 7622 .22227 .17790 .80037 .72060 .47714 .32193

5891 .39453 .20974 .53163 .38432 .16298 .09964 7700 .66846 .41115 .61507 .47594 .24481 .15360

5897 .64537 .37772 .58527 .50166 .24486 .16814 7706 .51528 .30817 .59807 .50919 .27933 .17442

Appendix 4–2.3. L-moments of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
198 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 0.62363 0.37990 0.60918 0.50647 0.27617 0.15690 8910 0.70650 0.38166 0.54021 0.29665 0.03253 -0.04321

7745 .73919 .44685 .60452 .46432 .24655 .17008 8911 .53093 .33805 .63671 .49564 .25746 .16095

7922 .25295 .14749 .58308 .47230 .26279 .16360 8924 .31305 .16579 .52959 .42882 .21894 .11763

7936 .73929 .43138 .58351 .46889 .24760 .17162 8929 .95091 .53580 .56346 .31309 .01221 -.01702

7943 .39430 .26215 .66484 .52733 .28011 .17310 8942 .72748 .42560 .58503 .48291 .24070 .15344

7944 .40500 .27489 .67875 .53795 .28089 .15345 8944 .62032 .38178 .61546 .47001 .24150 .15312

7945 .46749 .32725 .70001 .57110 .32855 .22116 8996 .61313 .38117 .62167 .49774 .27170 .17886

7947 .69036 .43513 .63029 .57133 .35031 .25518 9014 .71174 .34079 .47881 .28837 .08279 .01061

7948 .56975 .36369 .63832 .51699 .27926 .16905 9037 .33576 .20162 .60050 .54318 .34737 .24545

7951 .67097 .37469 .55842 .41662 .20176 .12160 9106 .30259 .19196 .63439 .58547 .38556 .28438

7953 .46752 .29252 .62569 .51620 .28361 .16461 9107 .37057 .22343 .60293 .44933 .18851 .12487

7981 .54530 .33930 .62223 .47475 .21045 .09804 9129 .37239 .25312 .67973 .59657 .34988 .21559

7990 .48285 .33224 .68808 .58336 .35628 .23804 9163 .56010 .32661 .58312 .47972 .25668 .16205

7992 .70478 .39233 .55667 .38940 .07829 -.04344 9213 .55661 .34733 .62401 .46529 .22988 .14650

7997 .47692 .29346 .61534 .49299 .25297 .13565 9214 .92900 .53861 .57977 .48620 .26373 .14435

7999 .32737 .21971 .67113 .55778 .34309 .24567 9222 .55910 .35131 .62835 .47734 .22977 .13098

8022 .43529 .26711 .61363 .46970 .18391 .06443 9248 .45297 .25756 .56860 .44349 .19634 .09899

8023 .47157 .27763 .58874 .52191 .29585 .18908 9266 .56176 .31679 .56393 .41736 .16439 .05934

8047 .59280 .34175 .57650 .45761 .22568 .13831 9270 .34029 .18393 .54051 .53295 .29670 .17036

8060 .46492 .31292 .67305 .55543 .28779 .14083 9295 .21638 .13544 .62595 .53388 .32075 .21735

8062 .68512 .50527 .73749 .61684 .35777 .20157 9304 -- -- -- -- -- --

8068 .28000 .18357 .65561 .55825 .32289 .21352 9307 .58953 .32006 .54291 .43908 .24104 .15580

8081 .57931 .36511 .63025 .55060 .32392 .21493 9328 .43921 .24796 .56456 .42114 .18629 .10713

8089 .49725 .28806 .57930 .38787 .13470 .05739 9329 .48333 .26990 .55842 .24971 -.14014 -.12035

8221 .73737 .33076 .44857 .32655 .24033 .14816 9345 -- -- -- -- -- --

8252 .45668 .26402 .57813 .49875 .26929 .16201 9363 .44605 .30707 .68841 .56564 .32752 .21621

8265 .70119 .44917 .64059 .53230 .31432 .21967 9364 .51661 .36071 .69822 .57597 .33941 .22995

8289 .47547 .22080 .46438 .20473 .03851 .02900 9365 .32794 .20937 .63843 .64646 .45802 .32395

8305 .30023 .16541 .55093 .52146 .31434 .18674 9371 .60136 .34870 .57986 .43093 .17020 .07561

8335 .75674 .43293 .57211 .42973 .22039 .14638 9417 .60266 .36076 .59861 .45291 .21196 .12015

8400 .38236 .22631 .59187 .51518 .32541 .23243 9419 .51197 .33254 .64953 .49057 .23927 .14476

8445 .64720 .40780 .63010 .50930 .27871 .18153 9435 .47961 .27509 .57356 .48933 .31105 .25907

8446 .58258 .34374 .59003 .49069 .24638 .13880 9491 .64514 .38378 .59489 .47535 .24107 .14633

8451 .47876 .28661 .59865 .48632 .25751 .15968 9499 .50609 .29050 .57401 .49036 .23643 .13460

8531 .61998 .35486 .57237 .44780 .23555 .15275 9522 1.1053 .65467 .59228 .33090 -.02320 -.10442

8541 .61931 .36195 .58443 .44061 .22410 .14133 9527 .43156 .24134 .55921 .51677 .26947 .15991

8544 .66632 .40398 .60629 .51507 .27068 .16957 9532 .59205 .34592 .58427 .47496 .25004 .16280

8545 .30150 .14513 .48137 .18102 .02057 .10041 9544 1.2500 1.1260 .90080 .96803 .95560 .90586

8563 .66514 .37909 .56993 .48410 .23956 .16875 9565 .53229 .31120 .58464 .50053 .27578 .17350

8566 .47794 .28321 .59257 .45594 .22346 .12987 9570 .48227 .26989 .55962 .52858 .27245 .17182

8583 .51361 .29314 .57075 .51189 .22206 .12326 9574 .52727 .29654 .56240 .47124 .17610 .10626

8584 .60137 .34518 .57398 .46131 .22504 .14164 9588 .50430 .31869 .63195 .55598 .32065 .18919

8623 .61168 .33934 .55476 .45519 .21949 .13639 9665 .67306 .39277 .58356 .46734 .24250 .15947

8625 .59015 .35337 .59878 .47824 .25855 .17632 9715 .61448 .35738 .58159 .45758 .22814 .14599

8630 .47249 .26728 .56568 .46251 .22513 .12361 9729 .50245 .31989 .63667 .48142 .24067 .15324

8631 .52617 .31059 .59028 .48636 .26775 .16861 9772 .62617 .40819 .65188 .54281 .31857 .21594

8646 .59940 .35331 .58945 .45769 .23245 .14706 9814 .61371 .33995 .55392 .36670 .13471 .06075

8647 .42753 .24558 .57442 .52599 .28579 .17707 9815 .64448 .38754 .60132 .50556 .28781 .19201

8677 .55856 .30735 .55026 .43553 .23015 .14235 9816 .60757 .39459 .64947 .53566 .31004 .20258

8696 .73654 .39352 .53429 .33496 .14206 .10838 9817 .56603 .31881 .56324 .47962 .24190 .16055

8743 .72718 .42783 .58835 .46408 .24177 .15671 9829 .36309 .21560 .59379 .54755 .32740 .19436

8761 .41706 .23354 .55997 .51529 .29004 .18452 9830 .28564 .17306 .60586 .49262 .24280 .12822

8778 .67237 .38818 .57732 .47228 .23906 .15974 9858 .46521 .26192 .56302 .45329 .24480 .15337

8845 .62282 .38368 .61603 .52576 .28691 .18012 9893 .56249 .32820 .58347 .47486 .25342 .16364

8859 .72326 .41024 .56721 .42451 .21292 .14054 9916 .73930 .41484 .56114 .42949 .19162 .11593

8898 .70381 .41479 .58935 .47114 .25962 .16793 9976 .51503 .31647 .61447 .53111 .29758 .18359

8908 .61639 .39106 .63443 .52859 .31249 .23155

Appendix 4–2.3. L-moments of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 199

Appendix 4–2.4. L-moments of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0015 0.16143 0.12905 0.79941 0.81255 0.70849 0.64207 1154 0.53222 0.35862 0.67383 0.51561 0.24317 0.12791

0016 .49936 .31738 .63557 .47934 .24143 .15617 1165 .51648 .30858 .59747 .45658 .22346 .13068

0050 .62342 .34726 .55703 .39911 .18528 .12026 1185 .43321 .23800 .54938 .41835 .19512 .11103

0054 .39708 .22591 .56893 .40498 .16900 .07820 1186 .62800 .40228 .64057 .55680 .33169 .18472

0120 1.1712 .62735 .53566 .34257 .20049 .16923 1188 .49625 .25911 .52213 .42798 .34528 .20606

0145 .49535 .35564 .71794 .63550 .43586 .32683 1245 .93000 .52567 .56524 .33259 .16038 .23188

0146 .44683 .23282 .52104 .29664 .06295 .00301 1246 .67865 .39796 .58640 .50398 .25681 .18920

0174 .41454 .23256 .56101 .52726 .29794 .19270 1267 .48246 .30943 .64136 .55571 .36447 .28109

0178 .35944 .23768 .66124 .55740 .25251 .11467 1304 .63367 .38408 .60612 .48399 .27182 .19202

0179 .34630 .20811 .60094 .50107 .25817 .13425 1325 .74436 .46077 .61902 .49055 .25750 .16700

0202 .58502 .32473 .55507 .47346 .20547 .11154 1429 .65929 .39958 .60609 .49634 .27809 .18053

0206 .69372 .38309 .55223 .44269 .22333 .15228 1431 .71409 .42689 .59782 .46889 .24094 .15084

0208 -- -- -- -- -- -- 1432 .71277 .42624 .59801 .45532 .23357 .14868

0211 .39023 .25513 .65380 .51754 .27905 .17900 1433 .71651 .42528 .59354 .47624 .26566 .17032

0244 .63913 .34551 .54060 .30300 .07881 .06053 1434 .70769 .41714 .58943 .45800 .23261 .14861

0248 .43249 .24845 .57446 .50997 .28504 .17431 1435 .72952 .42875 .58772 .45306 .24007 .15432

0262 .74043 .43098 .58207 .45163 .23851 .15966 1436 .73500 .43355 .58986 .46484 .25123 .16561

0271 1.1924 .61765 .51801 .30081 .09007 .00242 1437 .57364 .42662 .74372 .60673 .29495 .11752

0380 .75312 .47790 .63456 .53657 .32801 .23013 1438 .70319 .41731 .59345 .45140 .22033 .13192

0394 .63250 .39357 .62225 .50000 .39383 .27768 1462 -- -- -- -- -- --

0408 1.2279 .63266 .51523 .27913 .12767 .10118 1492 .62145 .36454 .58660 .49827 .25688 .16227

0427 .64286 .40230 .62579 .54873 .24693 .14407 1500 .73708 .45288 .61442 .39752 .02905 -.10253

0428 .55559 .37243 .67034 .52227 .27396 .17391 1528 .59291 .36342 .61294 .53343 .28990 .18137

0429 .69623 .46083 .66190 .50210 .25416 .16404 1541 .80526 .45896 .56995 .43007 .17063 .12796

0463 .56755 .32979 .58107 .52982 .35041 .26161 1569 .68089 .43946 .64542 .52960 .33129 .25847

0493 .84125 .32883 .39089 .27619 .21498 .08484 1632 .47857 .26095 .54527 .12044 -.25730 .08212

0495 .38643 .21761 .56311 .43932 .23317 .15284 1641 .50087 .27406 .54716 .40290 .18351 .11545

0496 .24148 .13943 .57739 .46253 .25364 .13889 1646 .46882 .26616 .56771 .50734 .26039 .15458

0498 .19364 .05255 .27136 -.23183 .07151 .19031 1663 1.1189 .72508 .64801 .53862 .27687 .16247

0509 .68827 .41538 .60352 .51065 .28776 .19295 1671 .68766 .41438 .60260 .49487 .25770 .16277

0518 .69587 .40848 .58701 .47306 .24717 .16300 1680 .66117 .38810 .58700 .46580 .25485 .16923

0521 .53219 .29533 .55494 .45089 .24809 .10765 1694 .57007 .32050 .56221 .45869 .16443 .09363

0556 .59080 .34901 .59074 .48845 .25181 .13535 1696 .53126 .30953 .58264 .45484 .23969 .15710

0569 .78772 .49724 .63123 .53705 .30546 .20055 1697 .49313 .29845 .60522 .49793 .25298 .12564

0572 .70053 .43274 .61774 .50435 .29050 .20438 1698 .53046 .30816 .58092 .49837 .27244 .17389

0576 .55420 .38094 .68737 .58148 .35588 .26262 1720 .56935 .35026 .61520 .55625 .24115 .10181

0580 .67978 .43384 .63821 .54168 .31896 .20976 1761 .38876 .23029 .59237 .43679 .24617 .18357

0587 .74022 .46209 .62427 .48978 .26742 .19047 1773 .80949 .46100 .56949 .44832 .22569 .14914

0605 .74827 .38927 .52022 .44841 .28466 .19719 1810 .47545 .27056 .56906 .51946 .34838 .25288

0639 .63772 .39202 .61472 .54135 .30191 .19726 1823 .84381 .46776 .55435 .29254 .02894 .02340

0655 -- -- -- -- -- -- 1870 .68658 .39168 .57048 .40968 .17254 .08256

0665 .67881 .41077 .60513 .46566 .23996 .15525 1875 1.0163 .45567 .44838 .30912 .09726 .09982

0689 .65718 .40866 .62183 .52629 .30748 .20543 1876 .69977 .39900 .57019 .39605 .15980 .07984

0690 .55236 .31997 .57928 .53621 .28152 .18722 1889 .62057 .40399 .65100 .48136 .23478 .15602

0691 .64053 .38129 .59527 .45028 .22197 .13513 1903 .50093 .27035 .53969 .48180 .23466 .17114

0708 .58640 .33783 .57611 .54409 .31574 .21540 1914 .82316 .47550 .57765 .52116 .38258 .41853

0738 .69295 .39981 .57696 .45132 .24178 .15967 1920 .72988 .41782 .57246 .45595 .26218 .19917

0776 .49703 .29805 .59967 .50487 .27544 .17011 1921 .78493 .45138 .57506 .44934 .22848 .15121

0779 .49342 .28164 .57080 .53812 .26791 .16155 1937 .77557 .43667 .56304 .42798 .23322 .16521

0784 .48306 .29040 .60117 .53194 .29955 .17857 1956 .73982 .44245 .59805 .47558 .25639 .17191

0786 .39601 .25568 .64565 .50410 .25891 .15394 1970 1.1905 .81981 .68865 .58362 .41123 .38339

0917 .81757 .48525 .59353 .46030 .24256 .15874 2014 .51714 .37052 .71647 .57658 .31074 .18211

0923 1.2748 .56091 .44000 .23086 .11591 .04347 2015 .55533 .39555 .71228 .58916 .34793 .23078

0926 .65842 .38518 .58500 .45876 .22917 .13804 2019 1.0965 .51818 .47258 .20221 .08876 .12277

0950 .29558 .17735 .60001 .56411 .40186 .31947 2024 .70672 .39896 .56453 .44362 .23619 .15787

0996 1.1935 .65776 .55112 .41610 .30657 .26199 2042 .18700 .08389 .44860 .21656 .29943 .42450

1013 .60714 .39518 .65089 .64615 .40898 .29778 2043 .26475 .15505 .58565 .46055 .22478 .11840

1017 .57019 .33698 .59100 .48149 .25569 .16656 2048 .57914 .36118 .62364 .54879 .29702 .17637

1042 1.3517 .66618 .49286 .45758 .26042 .14558 2050 .44283 .32861 .74206 .64036 .40045 .26390

1048 .61042 .28176 .46158 .28453 .10153 .02622 2051 .50098 .29049 .57984 .42427 .19154 .14573

1053 .59055 .35837 .60684 .48721 .25876 .16372 2053 .22500 .14878 .66123 .63742 .45402 .31927

1057 .51685 .29404 .56891 .44912 .23946 .15283 2073 .67054 .41243 .61507 .50345 .29195 .20649

1063 1.1584 .63731 .55015 .47413 .39601 .29291 2082 .42965 .25196 .58643 .50309 .27950 .17500

1068 .69635 .39502 .56727 .44204 .22083 .14153 2086 .70036 .40418 .57710 .45584 .23053 .14788

1080 .38936 .20602 .52913 .43611 .25429 .17305 2088 .78511 .43580 .55508 .36922 .09182 .10648

1081 .69922 .40072 .57309 .43322 .21592 .13020 2090 .69199 .38902 .56217 .46877 .22964 .16126

1133 .26429 .18011 .68150 .47407 .13390 .04776 2096 .68565 .39037 .56934 .45253 .23644 .15877

1136 .48500 .35188 .72554 .61060 .37003 .24420 2128 .72785 .42140 .57897 .42878 .20421 .13707

1138 .90882 .44993 .49506 .30204 .19326 .24205 2131 .63444 .36009 .56757 .47089 .24547 .16564

1139 .74403 .44622 .59974 .44022 .19431 .08794 2142 1.1731 .52412 .44678 .22980 -.00295 .01088

Appendix 4–2.4. L-moments of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
200 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 0.45000 0.33403 0.74228 0.71862 0.61626 0.57945 3463 0.70932 0.44053 0.62107 0.48674 0.28150 0.20110

2206 .78211 .47190 .60336 .47707 .25683 .17075 3476 .64406 .38368 .59573 .46722 .25131 .16317

2238 .38128 .25625 .67209 .53505 .27025 .14546 3485 .96591 .62842 .65060 .50541 .18597 .09606

2240 .38012 .23150 .60900 .44642 .21203 .12661 3507 .69946 .41581 .59447 .49665 .23231 .13915

2242 .61679 .37931 .61497 .44294 .21028 .13638 3546 .79762 .46582 .58401 .46036 .24634 .16488

2244 .67507 .41315 .61202 .46866 .24250 .15029 3547 .67693 .38206 .56440 .39620 .16046 .08682

2247 .62854 .40377 .64240 .47446 .22532 .14616 3579 .68310 .40151 .58778 .44269 .15630 .04555

2309 .84109 .44106 .52439 .40951 .24009 .16688 3642 .73845 .43271 .58598 .47724 .26150 .17541

2312 .74674 .39975 .53532 .40971 .19314 .13703 3646 .66771 .38609 .57824 .46124 .25302 .17111

2334 1.0398 .56753 .54580 .41381 .21173 .08727 3668 1.4000 .57549 .41106 .35379 .17968 .01222

2336 .68668 .36071 .52529 .35760 .15383 .10097 3673 .98909 .51169 .51733 .18109 -.05047 .01439

2354 .37520 .20797 .55428 .38997 .09673 .02118 3686 .68709 .39509 .57501 .46857 .21903 .14286

2355 .66283 .46298 .69849 .58296 .34559 .23706 3691 .66916 .38669 .57788 .47038 .24314 .15613

2357 .43511 .31545 .72499 .60050 .34917 .22557 3734 1.4943 .90830 .60782 .37302 .08651 .01332

2360 .45542 .31834 .69899 .57211 .32578 .21090 3771 .67425 .39771 .58986 .49873 .22948 .14800

2361 .53547 .36255 .67706 .63701 .45893 .37479 3789 .22719 .12464 .54864 .45432 .26205 .17180

2394 .70467 .41786 .59298 .46105 .24162 .15455 3826 .60951 .32871 .53931 .40733 .21289 .13222

2404 .67257 .40006 .59482 .46938 .25131 .17004 3831 .75342 .43918 .58291 .45707 .24406 .15719

2415 .83535 .47673 .57069 .43892 .22972 .14992 3841 .71851 .41517 .57782 .45463 .23935 .14953

2462 .77732 .44052 .56671 .43238 .21361 .13743 3871 .60316 .34783 .57669 .45466 .24441 .16255

2528 .61170 .36264 .59284 .43863 .15297 .02319 3884 .92300 .59568 .64538 .49019 .21285 .09746

2617 .52348 .31498 .60170 .49581 .28887 .20041 3941 .93000 .52354 .56295 .33359 .10509 .10336

2619 .52826 .28710 .54348 .43062 .23946 .16865 3963 .08333 .04933 .59200 .67568 .45946 .20270

2621 .55557 .32101 .57780 .47244 .25299 .15771 4040 .58567 .32732 .55887 .43053 .23065 .15448

2675 .69408 .41730 .60123 .51555 .29343 .19967 4058 1.0290 .66947 .65061 .55144 .36672 .32576

2676 .67566 .39808 .58917 .49756 .22343 .13291 4098 .42734 .23436 .54842 .49701 .25507 .15154

2679 .57667 .37298 .64679 .56676 .32160 .18887 4100 .56228 .33635 .59819 .48480 .26867 .18739

2715 .65123 .36842 .56573 .44133 .23229 .15170 4137 .65554 .36465 .55626 .45884 .21301 .14954

2744 .57498 .32846 .57126 .46214 .24252 .15781 4191 .63462 .39054 .61540 .52430 .28703 .17814

2758 .47921 .33658 .70237 .60195 .34458 .19364 4256 -- -- -- -- -- --

2794 .43091 .29836 .69241 .50599 .16870 -.00965 4257 .81988 .46685 .56942 .45167 .23273 .15859

2797 .22862 .14582 .63783 .51977 .28974 .18998 4258 .71667 .40355 .56309 .46890 .24383 .18773

2811 .54934 .32608 .59359 .49280 .25243 .14238 4278 .68125 .40173 .58970 .44649 .21777 .13434

2813 .67636 .35740 .52842 .42645 .23315 .04773 4299 .35839 .16674 .46525 .32118 .13418 .05702

2814 .22812 .16854 .73881 .63221 .30029 .00876 4300 .65304 .43804 .67077 .53337 .29874 .20031

2815 .54696 .30647 .56031 .52706 .30743 .22793 4305 .61660 .41609 .67480 .53035 .28782 .19048

2818 .63936 .38009 .59449 .47190 .26974 .19451 4307 .70406 .47685 .67729 .54754 .32780 .23877

2986 .89262 .48355 .54171 .36050 .14796 .10114 4309 .75338 .46392 .61579 .48459 .26090 .17512

3005 .64014 .35986 .56216 .43699 .21362 .13788 4311 .79725 .48002 .60210 .46620 .24397 .15784

3033 .28029 .15726 .56106 .49773 .30060 .19845 4313 .85597 .52550 .61393 .51355 .30063 .18937

3034 -- -- -- -- -- -- 4319 .62094 .33363 .53730 .38501 .16515 .11567

3047 .78696 .46569 .59176 .40781 .19185 .15451 4329 .77842 .46540 .59787 .48089 .27026 .17703

3103 .88679 .57583 .64935 .61785 .35803 .18334 4331 -- -- -- -- -- --

3133 .74666 .42515 .56940 .44254 .23620 .15787 4375 .67108 .40568 .60452 .54854 .30711 .21638

3156 .86163 .52691 .61153 .52566 .31055 .21762 4392 .88741 .53326 .60092 .46677 .25484 .17477

3171 .70465 .40578 .57586 .45082 .23508 .15061 4425 .45429 .26017 .57268 .50597 .26142 .15499

3189 .35859 .21350 .59540 .53160 .31713 .19776 4440 .59577 .35828 .60138 .47382 .25039 .16404

3260 .58477 .34530 .59049 .43507 .20952 .12309 4476 .64503 .35722 .55380 .44913 .22706 .15027

3267 .46720 .31534 .67496 .58663 .36630 .25808 4498 .23909 .11836 .49506 .23605 .04506 .00512

3270 .54319 .30812 .56724 .50127 .25379 .17468 4517 .66119 .38216 .57799 .44131 .22887 .14611

3272 .13895 .06930 .49874 .30037 .10983 .08910 4520 .63729 .35985 .56466 .47610 .22449 .15296

3277 .17143 .11077 .64615 .54464 .34479 .33883 4525 1.0367 .75510 .72839 .57986 .24763 .03538

3278 .47122 .27029 .57359 .47433 .24339 .13676 4563 .54115 .33848 .62547 .48798 .26894 .22470

3280 .34400 .21494 .62484 .51284 .27829 .16666 4570 .56564 .33244 .58772 .49540 .26837 .16886

3281 .36930 .18315 .49592 .31909 .12656 .06467 4577 .77445 .43387 .56023 .44124 .23625 .15862

3283 .60677 .38624 .63656 .48583 .25432 .16031 4591 .71650 .41887 .58460 .45481 .24188 .15796

3284 .66272 .38494 .58085 .46257 .23502 .14238 4670 .54813 .32179 .58707 .48204 .25485 .16058

3285 .68486 .39031 .56992 .46384 .21720 .13720 4671 .45955 .27756 .60398 .45062 .22523 .15382

3329 .63140 .39842 .63101 .52534 .30728 .21171 4679 .68150 .40607 .59584 .50276 .26770 .18040

3335 .92727 .56280 .60694 .50673 .30054 .20514 4696 .40000 .20667 .51667 .32859 .08431 .01931

3370 .75746 .43283 .57143 .43486 .22809 .14934 4703 .49532 .29708 .59977 .49889 .26114 .14038

3410 .54435 .29994 .55100 .46699 .24002 .16045 4704 .92520 .57402 .62043 .50577 .28216 .17682

3415 .67954 .39469 .58082 .46690 .24287 .15868 4731 .49514 .34456 .69588 .59474 .39171 .29277

3430 .65246 .44072 .67548 .54475 .31666 .21991 4792 .65920 .36839 .55884 .46210 .21147 .13801

3431 .67791 .48426 .71433 .60175 .38060 .28389 4819 .77376 .42723 .55215 .43824 .20009 .12495

3441 .62892 .38764 .61636 .47986 .22709 .10206 4852 .88562 .43246 .48831 .43799 .36173 .27439

3442 .43430 .25521 .58764 .49030 .26330 .15346 4866 .71477 .40453 .56596 .44240 .22828 .15192

3446 .48950 .26770 .54689 .43062 .21978 .14144 4876 .87705 .52707 .60096 .49683 .24699 .15686

3460 .82306 .47780 .58052 .41448 .24731 .27373 4878 .86062 .51609 .59968 .47696 .25841 .16412

3462 .53836 .28626 .53172 .40883 .20521 .14376 4880 .48219 .27580 .57198 .47903 .25967 .16405

Appendix 4–2.4. L-moments of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 201

4920 0.61901 0.37646 0.60816 0.51356 0.27495 .17153 5957 0.65992 0.38244 0.57953 0.47745 0.25027 0.16997

4934 .36714 .24857 .67704 .72874 .63218 .57854 5958 .62960 .35753 .56787 .39598 .16570 .07877

4972 .62760 .36140 .57584 .47209 .25529 .17158 5973 .50844 .34589 .68029 .55140 .28194 .15061

4973 .87728 .45613 .51993 .39080 .22433 .16178 5996 .63813 .37140 .58201 .46674 .23468 .14927

4974 .50803 .29915 .58884 .49044 .27702 .18489 6017 .46250 .29108 .62936 .48690 .24036 .13188

4975 .79284 .44264 .55830 .44867 .22094 .15574 6024 .98966 .61403 .62044 .48539 .26714 .19472

4978 .63316 .39251 .61992 .48915 .26285 .16336 6050 .70211 .32620 .46460 .30137 .01414 -.07950

4979 1.0694 .57657 .53913 .41508 .24564 .13222 6104 .39300 .22526 .57317 .50773 .30081 .19724

4982 .57403 .32903 .57318 .44911 .23688 .15293 6108 .83479 .46949 .56241 .43411 .22017 .14567

5018 .64486 .35513 .55071 .40141 .18643 .12275 6136 .42902 .23693 .55226 .49109 .25965 .16105

5048 .49602 .29880 .60240 .53931 .29750 .18714 6166 .41000 .24689 .60216 .49059 .24107 .13171

5049 .46154 .26190 .56746 .59235 .38789 .31075 6176 .79668 .47776 .59969 .47646 .26638 .16988

5056 .43200 .18600 .43056 .26882 .67742 .11828 6177 .81076 .47062 .58046 .46561 .24520 .16020

5057 .38718 .27383 .70724 .59968 .35899 .22649 6210 .73493 .42767 .58192 .46306 .23471 .15465

5060 .59404 .41986 .70679 .59393 .36070 .24798 6211 .69357 .42624 .61456 .46810 .23399 .14556

5081 .75150 .42556 .56629 .41242 .20787 .14472 6270 .83371 .47109 .56505 .45851 .23408 .16455

5094 .71483 .41334 .57824 .46440 .24131 .15322 6275 -- -- -- -- -- --

5113 .64457 .40307 .62534 .54122 .30967 .20013 6276 1.0757 .52052 .48389 .18528 .01742 .07976

5114 -- -- -- -- -- -- 6335 .71831 .40945 .57001 .43096 .21804 .14211

5123 .65133 .40114 .61588 .56622 .34537 .13957 6434 .66294 .34434 .51941 .33649 .12141 .12260

5192 .72633 .42521 .58542 .46507 .24244 .14718 6504 .47891 .27849 .58150 .50663 .27158 .16574

5193 .68532 .41128 .60012 .47840 .24316 .15238 6558 .63828 .38589 .60458 .41319 .12958 .09096

5224 .82237 .48997 .59581 .45172 .24408 .16603 6615 .57567 .34289 .59564 .55662 .32194 .23456

5228 .66204 .40013 .60439 .44264 .20057 .12101 6660 .73196 .43753 .59775 .47701 .26184 .16425

5235 .60926 .36516 .59935 .42014 .20256 .15941 6663 .55874 .34009 .60868 .48883 .26599 .15270

5247 .49366 .27794 .56302 .47671 .24720 .15035 6734 .49637 .29437 .59305 .46933 .25525 .16522

5258 .71238 .41360 .58060 .45752 .24315 .14820 6736 .51944 .30631 .58970 .51609 .27772 .17140

5303 .63643 .40443 .63548 .53561 .31651 .22802 6740 1.5023 .78744 .52415 .23161 -.09360 -.22178

5312 .60207 .35230 .58515 .50469 .26071 .17417 6750 .76705 .53511 .69762 .57230 .34225 .23197

5341 1.1777 .73305 .62243 .54997 .30889 .14983 6757 .72407 .43389 .59923 .46257 .24222 .15923

5342 -- -- -- -- -- -- 6775 .46805 .27613 .58996 .45477 .24035 .15926

5348 .81184 .45400 .55922 .42539 .18941 .11639 6776 .48392 .27097 .55994 .47836 .25392 .15751

5358 .55933 .32781 .58608 .46835 .24386 .14838 6788 .77802 .42242 .54293 .39965 .22370 .14854

5398 .74601 .43661 .58526 .45732 .23900 .15587 6792 .37995 .21169 .55716 .48949 .26220 .14771

5410 .49009 .28424 .57997 .50294 .29132 .19680 6794 1.6258 .74778 .45995 .18235 .08183 .11124

5411 .40351 .26636 .66011 .52597 .28809 .18678 6834 .82701 .46653 .56411 .45550 .22863 .16089

5424 .74236 .48182 .64904 .48032 .23841 .15818 6893 .36228 .20436 .56410 .54910 .33452 .21923

5429 .62351 .39462 .63291 .50596 .26877 .16904 6935 .48008 .27193 .56642 .52087 .29883 .20303

5431 1.0329 .52538 .50867 .38590 .18418 .09813 6981 .68756 .40210 .58482 .48412 .28389 .19270

5461 .80768 .46947 .58125 .44862 .23919 .15794 7020 .74739 .44205 .59146 .46755 .27647 .21154

5463 .76701 .44202 .57629 .47605 .23593 .16363 7060 .55910 .31734 .56759 .47425 .23255 .13496

5471 .20350 .13603 .66843 .65873 .46059 .31783 7066 .80472 .45942 .57090 .43858 .22088 .14267

5477 .74565 .51308 .68810 .73104 .63699 .58232 7074 .46267 .27302 .59010 .51805 .30519 .20288

5528 .76857 .42711 .55572 .42028 .21258 .13490 7097 .65598 .37937 .57833 .48014 .25849 .14185

5579 -- -- -- -- -- -- 7116 .48830 .28295 .57946 .46174 .25196 .17397

5580 .65083 .32051 .49246 .29207 .10480 .02007 7140 .76508 .50271 .65706 .55295 .32872 .22116

5589 .31782 .17908 .56347 .39757 .17707 .10539 7173 .79990 .55218 .69032 .55268 .31352 .20992

5590 .36783 .21465 .58354 .47915 .25699 .15848 7174 .75300 .50422 .66961 .53059 .30105 .20868

5591 .38132 .20100 .52712 .41781 .22367 .14440 7213 .71803 .41676 .58042 .44740 .23228 .14277

5592 .33606 .19196 .57122 .47387 .26205 .16866 7243 .59964 .34782 .58004 .48576 .25676 .17113

5594 .33309 .19101 .57347 .47845 .25867 .15746 7262 .21865 .12727 .58204 .44325 .22794 .14702

5595 -- -- -- -- -- -- 7274 .71123 .38731 .54456 .44609 .24908 .16309

5596 .41354 .22057 .53338 .52455 .26768 .17679 7300 .63013 .36594 .58074 .44562 .23120 .15124

5600 .40224 .23765 .59080 .50341 .29505 .19258 7311 .73654 .42863 .58195 .52154 .26491 .15414

5618 .71929 .40201 .55890 .40210 .14848 .05476 7363 .81000 .38805 .47908 .21434 .05225 .07345

5650 .57053 .25713 .45070 .35194 .29942 .11496 7422 .65995 .40447 .61288 .50754 .28065 .18555

5656 .52043 .29834 .57326 .52683 .27021 .17979 7431 .47139 .27449 .58231 .49780 .27337 .17173

5658 .50242 .30646 .60997 .51640 .30477 .20442 7481 .38409 .23316 .60704 .56268 .35525 .23454

5661 .66276 .44000 .66389 .65635 .43175 .32816 7497 .68486 .39728 .58009 .49502 .24833 .17318

5666 .52750 .30792 .58374 .45234 .21988 .12890 7498 .69397 .40601 .58505 .49487 .25015 .18203

5695 .73630 .41616 .56520 .44069 .23980 .16363 7499 .63974 .36349 .56818 .47999 .24529 .16580

5742 .32875 .22033 .67022 .68289 .55196 .52503 7531 .68328 .38739 .56696 .41141 .17847 .09471

5766 1.0574 .57229 .54123 .38271 .13802 .04368 7534 .67745 .41872 .61808 .51717 .31473 .23396

5770 .52385 .30377 .57988 .48624 .25979 .15989 7556 .67323 .39512 .58690 .49702 .26915 .18151

5775 .36417 .20523 .56355 .30690 -.11308 -.08810 7594 .78907 .46040 .58348 .45461 .24382 .16384

5779 .76105 .42322 .55609 .44407 .19698 .03313 7596 .76382 .44808 .58663 .38508 .13391 .08046

5840 .66675 .39327 .58983 .45308 .22831 .14135 7608 .62927 .39579 .62897 .48157 .24935 .16277

5890 .37310 .24537 .65766 .53099 .29610 .18987 7622 .23286 .18471 .79325 .70806 .46303 .31352

5891 .41270 .21912 .53094 .39030 .16851 .10120 7700 .73457 .44522 .60609 .46516 .24028 .15273

5897 .72010 .41756 .57986 .47993 .23189 .16083 7706 .56902 .33834 .59460 .49913 .27489 .17743

Appendix 4–2.4. L-moments of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
202 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 0.77573 0.46945 0.60518 0.50376 0.28494 0.18276 8910 0.70650 0.38166 0.54021 0.29665 0.03253 -0.04321

7745 .82017 .49608 .60485 .48104 .27541 .19435 9107 .41839 .24834 .59357 .45102 .18256 .12444

7922 .26630 .15459 .58050 .46894 .26293 .16173 9129 .41845 .28372 .67803 .59593 .35031 .20736

7936 .81875 .47233 .57689 .45634 .24222 .17198 9163 .61168 .35554 .58126 .47348 .25237 .15988

7943 .43647 .28695 .65743 .51436 .26741 .16327 9213 .61118 .38457 .62923 .47015 .23452 .15065

7944 .45940 .30176 .65686 .49201 .23370 .12928 9214 .99536 .61597 .61884 .55350 .35015 .22789

7945 .53387 .37077 .69450 .56183 .31995 .21424 8911 .58177 .36296 .62388 .47991 .24773 .15859

7947 .79217 .50929 .64291 .57165 .34512 .24771 8924 .32878 .17302 .52626 .42163 .20753 .10316

7948 .62070 .39175 .63114 .50525 .26679 .15905 8929 1.1622 .58320 .50180 .16099 -.03597 .08066

7951 .72759 .40287 .55370 .40966 .19613 .11762 8942 .81123 .46831 .57729 .46524 .23610 .15458

7953 .51427 .31500 .61252 .49751 .26678 .15275 8944 .68064 .41452 .60901 .46271 .24316 .16065

7981 .60845 .37493 .61621 .45341 .18327 .07566 8996 .67574 .41806 .61868 .49012 .26668 .17974

7990 .58093 .40700 .70061 .60280 .36774 .21859 9014 .81850 .40418 .49381 .37557 .21132 .13798

7992 .81050 .42582 .52537 .31706 .03105 -.07188 9037 .35739 .21513 .60196 .53987 .34378 .24293

7997 .55563 .33975 .61146 .50289 .28314 .16188 9106 .33602 .22196 .66055 .62114 .43201 .33414

7999 .36588 .23294 .63666 .53144 .34091 .24009 9222 .62775 .39025 .62166 .48239 .24588 .14777

8022 .49300 .30321 .61504 .47131 .17096 .04555 9248 .49983 .28623 .57266 .44237 .20172 .10947

8023 .51385 .30144 .58662 .50901 .28311 .18289 9266 .60246 .33669 .55885 .40366 .15275 .06020

8047 .65070 .37518 .57658 .44999 .22018 .13863 9270 .37834 .20776 .54913 .52735 .30036 .18851

8060 .50432 .33707 .66836 .54892 .27827 .13387 9295 .23423 .14770 .63058 .54716 .34384 .23353

8062 .70225 .51866 .73857 .61124 .34326 .18541 9304 -- -- -- -- -- --

8068 .29647 .19576 .66029 .55922 .31093 .18190 9307 .61876 .33168 .53604 .42617 .22693 .14951

8081 .64109 .40384 .62993 .54296 .31692 .21438 9328 .49481 .28363 .57321 .44729 .23066 .14963

8089 .52342 .29703 .56749 .36118 .11296 .05501 9329 .60417 .37068 .61354 .36611 .04122 .10975

8221 .73737 .33076 .44857 .32655 .24033 .14816 9345 -- -- -- -- -- --

8252 .49373 .28491 .57705 .48661 .25704 .15723 9363 .51495 .35061 .68087 .55125 .31093 .19953

8265 .78889 .49643 .62927 .51484 .29926 .21007 9364 .57724 .40068 .69414 .56964 .33382 .22652

8289 .50400 .22962 .45560 .17924 .01368 .01921 9365 .35968 .23467 .65244 .67607 .49292 .34953

8305 .33082 .18563 .56111 .52719 .32209 .20424 9371 .66970 .38792 .57925 .40881 .13551 .04705

8335 .83116 .47000 .56548 .42239 .22076 .15122 9417 .65909 .39150 .59399 .44303 .20534 .11990

8400 .40092 .23429 .58437 .51020 .32294 .22671 9419 .57861 .36831 .63653 .47244 .22632 .13806

8445 .71404 .44178 .61870 .49296 .26559 .17342 9435 .50589 .28280 .55901 .48065 .31627 .26791

8446 .65024 .37925 .58324 .46819 .23036 .13319 9491 .71430 .42196 .59073 .46397 .23411 .14676

8451 .52766 .32087 .60810 .50246 .27657 .17705 9499 .55390 .31980 .57735 .47886 .22409 .12725

8531 .67723 .38431 .56747 .43685 .22879 .15056 9522 1.5073 .95164 .63136 .46567 .14740 .05397

8541 .67202 .38462 .57234 .41986 .20944 .13006 9527 .47569 .26701 .56132 .50479 .26318 .16278

8544 .74764 .46064 .61612 .52642 .29214 .20237 9532 .64604 .37745 .58425 .47150 .25239 .16956

8545 .37688 .18454 .48966 .23427 .08570 .15104 9544 -- -- -- -- -- --

8563 .73731 .42019 .56989 .47858 .24713 .17834 9565 .58556 .34270 .58526 .49020 .26612 .16726

8566 .51280 .30342 .59170 .44997 .21745 .12864 9570 .52874 .29659 .56094 .50762 .24604 .14592

8583 .57246 .32930 .57524 .50310 .22774 .14046 9574 .52727 .29654 .56240 .47124 .17610 .10626

8584 .65271 .37487 .57433 .45934 .22595 .14409 9588 .56126 .35573 .63381 .55059 .31233 .18694

8623 .67983 .37491 .55147 .44403 .21365 .13513 9665 .74923 .43378 .57897 .45844 .23845 .16002

8625 .64263 .37982 .59104 .46440 .25027 .17474 9715 .67145 .38665 .57584 .44726 .22367 .14306

8630 .50684 .28634 .56495 .44825 .21258 .12029 9729 .55312 .34931 .63153 .47234 .23366 .15085

8631 .57207 .33487 .58537 .47471 .25317 .15234 9772 .68777 .45422 .66042 .55852 .33886 .23313

8646 .64572 .38001 .58851 .45401 .23003 .14678 9814 .67125 .40808 .60795 .45551 .21103 .11327

8647 .46557 .26838 .57645 .51397 .27696 .17736 9815 .72741 .43832 .60258 .49489 .27143 .17718

8677 .64331 .35303 .54878 .43064 .20961 .11931 9816 .63324 .41274 .65179 .53088 .28850 .17300

8696 .83261 .47202 .56691 .36519 .14446 .09684 9817 .62725 .35467 .56544 .47427 .24544 .17015

8743 .80100 .46732 .58342 .45501 .23804 .15632 9829 .39403 .23443 .59495 .53791 .31620 .19156

8761 .45452 .25684 .56508 .50873 .27696 .16912 9830 .30521 .18397 .60279 .48490 .22995 .11117

8778 .74848 .42878 .57287 .46075 .23549 .15779 9858 .49591 .27981 .56424 .45285 .24221 .14947

8845 .69604 .42815 .61512 .51881 .28355 .18003 9893 .61362 .35707 .58191 .46693 .25138 .16888

8859 .80328 .44917 .55916 .41406 .21216 .14493 9916 .81232 .45376 .55859 .42479 .19670 .12334

8898 .76388 .44408 .58135 .46194 .25203 .15934 9976 .55915 .34352 .61435 .52334 .28943 .18040

8908 .71581 .42953 .60006 .47792 .28751 .23412

Appendix 4–2.4. L-moments of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 203

Appendix 4–2.5. L-moments of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0015 0.22000 0.16900 0.76818 0.78698 0.73373 0.82840 1154 0.65040 0.42825 0.65844 0.49332 0.22475 0.11794

0016 .54951 .34735 .63212 .47483 .23847 .15198 1165 .55455 .32672 .58915 .43509 .20179 .12035

0050 .66875 .36796 .55023 .39399 .19110 .12961 1185 .44303 .24490 .55278 .42975 .21319 .13149

0054 .51514 .27239 .52877 .34706 .12087 .00232 1186 .69011 .43110 .62468 .52551 .29965 .16986

0120 1.3273 .69038 .52013 .28013 .12195 .14090 1188 .49625 .25911 .52213 .42798 .34528 .20606

0145 .56456 .40506 .71748 .63342 .43518 .33106 1245 1.0230 .54237 .53017 .28061 .18049 .29129

0146 .49514 .23584 .47632 .26635 .05147 -.00323 1246 .74266 .42975 .57867 .48992 .26066 .19614

0174 .47819 .27124 .56723 .51295 .28028 .18595 1267 .52975 .33991 .64164 .55145 .35949 .27715

0178 .46214 .30665 .66354 .49884 .16869 .08881 1304 .70321 .42281 .60126 .47466 .26974 .19456

0179 .40448 .24290 .60053 .49156 .24752 .12679 1325 .81984 .50360 .61426 .47684 .24218 .15646

0202 .65090 .36223 .55650 .46104 .20013 .10756 1429 .70530 .42485 .60238 .48565 .26709 .17541

0206 .75434 .41368 .54840 .43097 .21583 .14537 1431 .76739 .45505 .59299 .46163 .23783 .15177

0208 -- -- -- -- -- -- 1432 .77623 .45654 .58815 .44763 .23449 .15165

0211 .42832 .27920 .65185 .51497 .27721 .17641 1433 .77282 .45315 .58635 .46657 .25871 .16638

0244 .71129 .39755 .55892 .33540 .10560 .08479 1434 .76782 .44922 .58506 .45031 .22722 .14276

0248 .46497 .26859 .57764 .50690 .28196 .17387 1435 .79135 .45972 .58094 .44295 .22996 .14545

0262 .79378 .45869 .57786 .44607 .23551 .15664 1436 .79656 .46259 .58073 .45192 .23995 .15631

0271 1.3513 .70486 .52160 .20454 -.05620 .00541 1437 .60095 .44067 .73328 .59095 .27680 .10757

0380 .81442 .51674 .63449 .53243 .31746 .21837 1438 .75479 .44353 .58762 .44454 .21965 .13534

0394 .72286 .41952 .58037 .50738 .45289 .12599 1462 -- -- -- -- -- --

0408 1.6372 .86402 .52774 .30826 .05987 -.07733 1492 .67488 .39133 .57985 .47994 .24524 .15847

0427 .71591 .44434 .62067 .52278 .23457 .15930 1500 .98278 .67925 .69115 .54379 .25635 .15402

0428 .62048 .40973 .66035 .50954 .26642 .17247 1528 .63965 .39034 .61025 .52017 .27812 .17631

0429 .79045 .50846 .64325 .48752 .25315 .16414 1541 .95625 .54269 .56751 .42403 .19764 .15604

0463 .61388 .36219 .59000 .54539 .36822 .26584 1569 .73800 .46914 .63569 .51781 .31664 .24674

0493 1.0354 .43718 .42224 .24553 .17915 .10657 1632 .55833 .26567 .47582 -.01757 -.18570 .43915

0495 .42869 .23818 .55560 .42956 .22939 .15284 1641 .53665 .30030 .55959 .43416 .22804 .15589

0496 .27167 .14417 .53067 .44269 .26017 .12095 1646 .50610 .28869 .57042 .50422 .25953 .15578

0498 .21300 .04722 .22170 -.34941 .20924 .06941 1663 1.2937 .78871 .60963 .49090 .25410 .13673

0509 .74393 .44649 .60018 .50413 .28554 .19281 1671 .75627 .45204 .59773 .48208 .24930 .16122

0518 .76619 .44594 .58202 .46104 .24017 .15777 1680 .70604 .41525 .58814 .47472 .26447 .17550

0521 .54935 .31411 .57178 .47068 .25797 .11391 1694 .60543 .34506 .56994 .46862 .18303 .10638

0556 .64217 .37073 .57730 .47049 .22508 .11312 1696 .56244 .32765 .58254 .45554 .24199 .15815

0569 .87149 .54477 .62510 .52244 .29003 .18921 1697 .52474 .31791 .60585 .49764 .24586 .10514

0572 .78466 .47376 .60378 .48105 .27225 .19408 1698 .57340 .33318 .58107 .49407 .27122 .17613

0576 .64029 .44057 .68807 .58227 .35350 .25014 1720 .64011 .38917 .60797 .51866 .20723 .08773

0580 .73388 .46330 .63131 .52646 .30204 .19508 1761 .41977 .24708 .58862 .41374 .20603 .14542

0587 .81568 .50540 .61961 .48252 .26558 .19329 1773 .87130 .49308 .56591 .44197 .22705 .15308

0605 .81495 .41446 .50857 .42989 .25542 .17212 1810 .61529 .33257 .54051 .51121 .34187 .21728

0639 .70835 .43618 .61576 .52989 .29066 .18974 1823 .98444 .49948 .50737 .18462 -.02059 .09531

0655 -- -- -- -- -- -- 1870 .75279 .43299 .57518 .41258 .17947 .09751

0665 .73197 .44020 .60139 .46088 .24091 .15985 1875 1.2508 .51859 .41462 .19613 .05502 .06886

0689 .72386 .44924 .62061 .51718 .29541 .19843 1876 .83583 .45910 .54928 .33200 .08197 .03927

0690 .61989 .35833 .57805 .51173 .26212 .17805 1889 .70537 .45660 .64732 .48507 .24908 .16885

0691 .69773 .41197 .59045 .44611 .22441 .14023 1903 .53059 .28626 .53951 .46953 .22878 .17327

0708 .64298 .36647 .56996 .51681 .28648 .18985 1914 .97750 .57533 .58858 .51951 .37849 .35865

0738 .73984 .42438 .57361 .44446 .23636 .15500 1920 .80325 .45388 .56505 .44845 .25822 .19095

0776 .53618 .32185 .60028 .49875 .26878 .16793 1921 .84559 .48367 .57199 .44745 .23454 .15838

0779 .53544 .30618 .57182 .52236 .25338 .14629 1937 .84128 .46863 .55704 .42459 .23456 .16147

0784 .52216 .31375 .60088 .52052 .28415 .16961 1956 .83349 .49222 .59055 .45972 .24237 .16284

0786 .42291 .27076 .64022 .49061 .24254 .13995 1970 1.3784 1.0346 .75058 .66473 .49784 .48233

0917 .92833 .53274 .57386 .43573 .22888 .15161 2014 .56416 .40220 .71292 .56878 .30288 .17971

0923 1.4660 .71958 .49085 .36912 .17536 .02094 2015 .62332 .43975 .70550 .57946 .33953 .22557

0926 .70976 .41277 .58157 .44844 .21960 .13053 2019 1.3706 .83788 .61131 .53761 .43976 .38708

0950 .33447 .19092 .57080 .54557 .39272 .30512 2024 .76229 .42615 .55905 .43701 .23677 .16288

0996 1.4041 .88449 .62992 .49628 .29365 .19042 2042 .18700 .08389 .44860 .21656 .29943 .42450

1013 .66341 .43544 .65636 .64033 .40692 .29815 2043 .29389 .16510 .56178 .41904 .19816 .10683

1017 .62113 .36478 .58729 .47411 .25134 .16524 2048 .63867 .39625 .62044 .53216 .28181 .17019

1042 1.8438 .89974 .48797 .37936 .15949 .02712 2050 .49130 .35515 .72289 .61410 .37488 .24896

1048 .81389 .40154 .49335 .42653 .28614 .24524 2051 .52690 .30583 .58043 .42277 .18706 .14631

1053 .63058 .38216 .60604 .48306 .25369 .16042 2053 .28125 .17161 .61016 .59001 .40062 .25494

1057 .55906 .32176 .57554 .45426 .24366 .15854 2073 .74238 .44805 .60353 .48834 .28487 .20501

1063 1.4673 .85333 .58155 .47886 .30808 .12811 2082 .46136 .27190 .58934 .50156 .28057 .18017

1068 .75017 .42178 .56224 .43467 .21679 .13876 2086 .76299 .44065 .57754 .45484 .23423 .15425

1080 .44093 .23118 .52430 .43778 .26027 .16376 2088 .97105 .52183 .53739 .32261 .10978 .18183

1081 .75455 .43538 .57700 .44031 .22695 .14288 2090 .76833 .42983 .55943 .46101 .23560 .16492

1133 .26429 .18011 .68150 .47407 .13390 .04776 2096 .74025 .42003 .56741 .44886 .23648 .15883

1136 .55926 .40196 .71873 .59773 .35397 .22963 2128 .78805 .44898 .56974 .41398 .19299 .12977

1138 1.1036 .56599 .51287 .33463 .20608 .14584 2131 .68475 .38634 .56420 .45805 .23520 .15736

1139 .79569 .45923 .57715 .42037 .18869 .07751 2142 1.2513 .54952 .43915 .22248 .03573 .05223

Appendix 4–2.5. L-moments of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
204 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 0.52105 0.38877 0.74613 0.70567 0.58835 0.53667 3463 0.74310 0.45685 0.61479 0.47271 0.26103 0.18851

2206 .86804 .51373 .59183 .45358 .23881 .16553 3476 .69485 .40923 .58895 .45956 .24594 .15735

2238 .42172 .27791 .65900 .51285 .24790 .12914 3485 1.2500 .89338 .71471 .62281 .36325 .23155

2240 .43366 .26965 .62179 .46348 .22366 .11291 3507 .77059 .45395 .58909 .47652 .22073 .13912

2242 .67016 .40682 .60704 .43297 .20579 .13482 3546 .87720 .50875 .57997 .45570 .24677 .16689

2244 .73503 .44714 .60833 .46417 .24144 .15117 3547 .71807 .39989 .55690 .38582 .15017 .07884

2247 .73585 .47359 .64359 .46587 .21665 .14670 3579 .78226 .44011 .56262 .40516 .12369 .04776

2309 .90323 .47924 .53059 .42749 .26291 .19034 3642 .80267 .46599 .58054 .46689 .25450 .17267

2312 .81818 .43864 .53612 .41406 .20449 .13696 3646 .71392 .41245 .57772 .45574 .24553 .16354

2334 1.0791 .61169 .56688 .45044 .25622 .14298 3668 1.5750 .65950 .41873 .31961 .19599 .08839

2336 .73624 .38629 .52468 .34465 .13574 .08838 3673 1.1453 .66117 .57731 .26610 -.04417 -.02303

2354 .42636 .23623 .55407 .36630 .05198 -.04824 3686 .75091 .42191 .56187 .44204 .20621 .14053

2355 .78179 .51950 .66450 .54139 .31739 .22297 3691 .72680 .41697 .57370 .45663 .22964 .14622

2357 .48162 .34578 .71796 .58573 .32879 .20465 3734 1.8089 1.0539 .58258 .30965 .02178 -.01449

2360 .50410 .34718 .68871 .55845 .31551 .20807 3771 .75583 .43714 .57836 .46691 .21036 .13987

2361 .60285 .40528 .67227 .62022 .44180 .36298 3789 .25964 .14035 .54057 .42739 .23087 .14470

2394 .76425 .45075 .58979 .45601 .23927 .15397 3826 .66166 .35856 .54191 .40667 .21210 .13902

2404 .72770 .43144 .59289 .46583 .25254 .17630 3831 .82191 .47857 .58226 .45187 .23562 .14693

2415 .88912 .50430 .56719 .43722 .23237 .15350 3841 .76173 .43852 .57569 .45636 .25316 .17255

2462 .84281 .47299 .56121 .42428 .20742 .12972 3871 .64686 .37333 .57715 .45515 .24570 .16303

2528 .66330 .38740 .58405 .42111 .13067 .00247 3884 1.0256 .65621 .63986 .46504 .15371 .01235

2617 .55223 .33112 .59960 .48729 .27394 .18239 3941 .94691 .54249 .57291 .35202 .12310 .12253

2619 .56953 .30731 .53959 .41455 .22492 .15892 3963 .10000 .05700 .57000 .50877 .38596 .87719

2621 .59967 .34548 .57612 .46859 .24817 .15052 4040 .62153 .34531 .55558 .43046 .23130 .15362

2675 .76462 .45225 .59147 .49803 .27992 .19377 4058 1.1433 .75974 .66449 .57253 .35731 .24771

2676 .75935 .44999 .59259 .49662 .24052 .15945 4098 .46297 .25751 .55620 .49701 .25757 .15394

2679 .62330 .40131 .64385 .55197 .30410 .17898 4100 .60930 .35977 .59047 .47340 .25902 .18050

2715 .69727 .39020 .55961 .43362 .23065 .15227 4137 .71875 .39981 .55626 .45495 .22424 .16473

2744 .62410 .35700 .57202 .45960 .24137 .15716 4191 .69061 .42267 .61203 .51202 .27558 .17087

2758 .51489 .35618 .69175 .58282 .31922 .17105 4256 -- -- -- -- -- --

2794 .43091 .29836 .69241 .50599 .16870 -.00965 4257 .90327 .51106 .56579 .44503 .23629 .16425

2797 .25273 .16057 .63535 .51471 .28694 .18877 4258 .86642 .47325 .54622 .43339 .23521 .18243

2811 .60230 .35751 .59357 .48958 .25162 .14757 4278 .72380 .42644 .58917 .44842 .22342 .13865

2813 .70857 .38471 .54294 .42252 .19943 .00717 4299 .37759 .17457 .46234 .30420 .10798 .04137

2814 .24333 .17695 .72720 .60296 .26534 -.01688 4300 .74602 .49273 .66048 .51956 .28853 .19536

2815 .59905 .33570 .56039 .51141 .28983 .20097 4305 .72335 .47518 .65691 .50657 .27087 .18167

2818 .66648 .39732 .59614 .47249 .26966 .19266 4307 .80967 .53684 .66303 .53532 .32425 .23648

2986 .97232 .52981 .54489 .38853 .20184 .16051 4309 .84419 .51176 .60621 .47220 .25463 .17545

3005 .68259 .38463 .56350 .44073 .22322 .15000 4311 .88849 .52954 .59600 .45778 .23879 .15473

3033 .29856 .17059 .57137 .50032 .29419 .18818 4313 .94840 .56651 .59733 .50020 .28986 .18350

3034 -- -- -- -- -- -- 4319 .71324 .39950 .56012 .45062 .23395 .13605

3047 1.0056 .57680 .57361 .38225 .12078 .03092 4329 .85653 .50666 .59153 .46988 .25965 .17057

3103 .91963 .59718 .64937 .60613 .34128 .16851 4331 -- -- -- -- -- --

3133 .80735 .45973 .56943 .43883 .23646 .16073 4375 .72213 .43366 .60054 .53379 .29664 .21037

3156 .93591 .57141 .61055 .52389 .31592 .22973 4392 .95129 .56965 .59882 .46630 .26292 .18855

3171 .75775 .43457 .57349 .44726 .23475 .15185 4425 .48741 .28223 .57903 .50538 .26517 .15934

3189 .41147 .23977 .58270 .51822 .30228 .19282 4440 .64304 .38306 .59571 .46580 .24885 .16660

3260 .63385 .37413 .59026 .43944 .21051 .11436 4476 .69991 .38651 .55222 .44273 .22497 .14948

3267 .53091 .36473 .68700 .60419 .39605 .29077 4498 .23909 .11836 .49506 .23605 .04506 .00512

3270 .58181 .33000 .56720 .49316 .25379 .17730 4517 .70890 .40762 .57501 .43385 .22126 .14054

3272 .15118 .07257 .48006 .24174 .10103 .11831 4520 .69652 .39417 .56592 .46953 .22579 .15523

3277 .18462 .11423 .61875 .53719 .35262 .36554 4525 1.2094 .92108 .76157 .65530 .38131 .17264

3278 .51918 .30202 .58171 .48255 .25409 .14974 4563 .56280 .35317 .62752 .48782 .27605 .24136

3280 .36338 .22921 .63078 .50938 .25946 .13886 4570 .61079 .35969 .58889 .49491 .27051 .17147

3281 .37810 .18433 .48753 .30871 .12545 .06205 4577 .85494 .47531 .55595 .43914 .24513 .17104

3283 .65667 .41926 .63847 .49103 .26018 .16137 4591 .77619 .45091 .58093 .44911 .24016 .15972

3284 .72548 .41755 .57556 .45105 .22653 .13662 4670 .59396 .34703 .58427 .47748 .25339 .16038

3285 .75086 .42482 .56578 .45078 .21261 .13545 4671 .49934 .30429 .60939 .44824 .21102 .13341

3329 .68397 .42859 .62662 .51937 .30230 .20960 4679 .73900 .43878 .59374 .49510 .26543 .18010

3335 .99655 .59219 .59424 .48830 .28370 .19673 4696 .48000 .23956 .49907 .16419 -.08468 .09508

3370 .81111 .46203 .56962 .43311 .22872 .14840 4703 .52417 .30662 .58496 .48338 .24730 .13210

3410 .58299 .32358 .55504 .46624 .23998 .15785 4704 1.0280 .62862 .61150 .48494 .26302 .16214

3415 .73198 .42297 .57785 .46236 .24459 .16117 4731 .56219 .38996 .69365 .59075 .38837 .29284

3430 .72991 .48774 .66822 .53536 .30855 .21244 4792 .71358 .39722 .55666 .45278 .21205 .14111

3431 .77739 .55309 .71147 .60705 .39771 .30245 4819 .85146 .46078 .54116 .40420 .17521 .11734

3441 .72719 .41652 .57279 .43761 .20340 .07215 4852 .94467 .45876 .48563 .43655 .37026 .24860

3442 .47202 .27542 .58349 .47263 .24113 .13203 4866 .77023 .43493 .56468 .44017 .22878 .15104

3446 .52944 .29290 .55322 .44191 .23498 .15479 4876 .97273 .58332 .59967 .48253 .23117 .14066

3460 .95581 .53611 .56090 .36116 .21793 .28168 4878 .96671 .56816 .58772 .46002 .24664 .15574

3462 .58398 .29925 .51243 .37995 .18940 .13936 4880 .52453 .30361 .57883 .48197 .26191 .16523

Appendix 4–2.5. L-moments of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 205

4920 0.67692 0.40980 0.60539 0.50113 0.26021 0.15934 5957 0.71762 0.41360 0.57635 0.46541 0.24261 0.16642

4934 .38667 .28067 .72586 .77553 .64964 .49287 5958 .68826 .38488 .55921 .36675 .12812 .05699

4972 .67704 .38799 .57306 .46339 .24889 .16752 5973 .53835 .37332 .69345 .57763 .31929 .18701

4973 .92576 .48206 .52071 .39853 .22885 .15621 5996 .68600 .39672 .57830 .46171 .23702 .15678

4974 .55477 .32952 .59398 .49534 .28158 .18719 6017 .49554 .31281 .63125 .48811 .23557 .11939

4975 .86435 .47730 .55221 .43284 .21337 .15229 6024 1.0924 .65139 .59632 .46350 .26694 .19990

4978 .70175 .43875 .62522 .48441 .23993 .13004 6050 .70211 .32620 .46460 .30137 .01414 -.07950

4979 1.2031 .65038 .54057 .39683 .15406 -.00484 6104 .46666 .27175 .58233 .50284 .29621 .20032

4982 .61824 .35513 .57442 .44658 .23248 .14884 6108 .90398 .50539 .55907 .42812 .21856 .14686

5018 .70407 .38544 .54744 .39807 .19255 .13071 6136 .47179 .26396 .55950 .48903 .25762 .15963

5048 .53212 .32066 .60261 .53072 .28892 .18174 6166 .45260 .26496 .58542 .47617 .23519 .11590

5049 .47727 .26946 .56459 .57982 .37978 .30932 6176 .87488 .52144 .59602 .47705 .27584 .17534

5056 .43200 .18600 .43056 .26882 .67742 .11828 6177 .89177 .51257 .57477 .45901 .24913 .16913

5057 .43577 .30252 .69422 .57934 .33681 .20708 6210 .79511 .45704 .57481 .44728 .22245 .14674

5060 .69735 .48457 .69487 .57589 .34468 .23270 6211 .83838 .50445 .60169 .44147 .21186 .13135

5081 .82672 .45735 .55321 .39835 .20264 .13918 6270 .91930 .51102 .55588 .44367 .23125 .16125

5094 .77558 .44574 .57471 .45739 .23907 .15145 6275 -- -- -- -- -- --

5113 .69712 .43429 .62298 .53367 .30373 .19817 6276 1.1295 .55355 .49009 .16073 -.03778 .05689

5114 -- -- -- -- -- -- 6335 .78108 .44065 .56415 .42528 .21860 .14430

5123 .69786 .44467 .63719 .55715 .27423 .01679 6434 .66294 .34434 .51941 .33649 .12141 .12260

5192 .78129 .45286 .57963 .45611 .23584 .14391 6504 .52124 .30334 .58196 .49437 .25828 .15800

5193 .74973 .44479 .59326 .46553 .23608 .15359 6558 .77043 .48431 .62862 .48936 .29121 .30356

5224 .90833 .55357 .60944 .48052 .28886 .21457 6615 .61588 .36725 .59629 .54857 .32135 .24023

5228 .73497 .43723 .59490 .42663 .18924 .11776 6660 .82188 .48536 .59055 .47269 .24660 .13113

5235 .71522 .40850 .57115 .35656 .15116 .14486 6663 .76928 .43042 .55951 .41920 .20026 .12580

5247 .52722 .29605 .56154 .46527 .23624 .14326 6734 .53657 .31887 .59426 .46813 .25065 .15937

5258 .76069 .44219 .58130 .46378 .25075 .15170 6736 .55928 .32911 .58845 .50962 .27754 .17584

5303 .69217 .43481 .62818 .52222 .30341 .21948 6740 1.6275 .88659 .54476 .24768 -.07294 -.12604

5312 .64621 .37892 .58638 .49937 .25655 .17012 6750 .86244 .60239 .69848 .56187 .32126 .21266

5341 1.3637 .90199 .66143 .56701 .27846 .05322 6757 .79721 .47281 .59308 .45472 .24015 .15978

5342 -- -- -- -- -- -- 6775 .50923 .29965 .58843 .44784 .22955 .14551

5348 .88200 .49081 .55648 .41990 .19259 .11933 6776 .52750 .29731 .56362 .47461 .25188 .15809

5358 .59686 .34840 .58372 .46173 .23626 .14269 6788 .83470 .46005 .55116 .42849 .25469 .15663

5398 .83003 .47765 .57546 .44903 .24058 .15968 6792 .41852 .23535 .56233 .47974 .25049 .14342

5410 .52474 .30523 .58169 .49937 .28590 .19397 6794 1.9306 .94588 .48993 .22585 .02468 .00395

5411 .44280 .29048 .65601 .51978 .28442 .18659 6834 .89218 .49978 .56018 .44713 .22891 .16292

5424 .85476 .55196 .64575 .47844 .24001 .15920 6893 .38622 .21964 .56870 .54310 .32620 .21335

5429 .70418 .43429 .61672 .48389 .25279 .16305 6935 .52500 .30135 .57399 .51720 .29385 .19556

5431 1.0329 .52538 .50867 .38590 .18418 .09813 6981 .76589 .43687 .57041 .45621 .26117 .17825

5461 .85498 .49680 .58106 .45177 .24693 .16673 7020 .80327 .48871 .60840 .48915 .28807 .20920

5463 .82760 .47062 .56865 .45927 .22773 .15865 7060 .60094 .34131 .56795 .46947 .22843 .13310

5471 .25438 .16246 .63866 .61587 .39869 .26261 7066 .87052 .49151 .56462 .43088 .22140 .14602

5477 1.0088 .76993 .76319 .81721 .75943 .72088 7074 .49984 .29785 .59590 .52037 .31064 .21245

5528 .82439 .45246 .54885 .40823 .20639 .13020 7097 .72728 .41042 .56432 .45268 .23485 .12546

5579 -- -- -- -- -- -- 7116 .53304 .30429 .57085 .44876 .24418 .16935

5580 .78100 .36916 .47267 .22360 -.00245 -.08559 7140 .84510 .55251 .65378 .54284 .31652 .20978

5589 .35163 .19896 .56583 .39408 .16219 .07913 7173 .92916 .62289 .67038 .52713 .29574 .20103

5590 .40745 .24458 .60027 .49044 .25354 .14390 7174 .86073 .56731 .65910 .51869 .29415 .20456

5591 .42400 .22155 .52252 .41335 .22723 .14944 7213 .77685 .44625 .57444 .43736 .22511 .13990

5592 .37807 .22123 .58515 .48687 .27443 .17838 7243 .64525 .37008 .57354 .46889 .24006 .16095

5594 .35735 .19959 .55852 .45803 .24218 .14685 7262 .24138 .14282 .59171 .45121 .24129 .16926

5595 -- -- -- -- -- -- 7274 .75209 .41470 .55140 .45780 .25903 .16652

5596 .46881 .25755 .54936 .52813 .28290 .18946 7300 .67764 .39285 .57973 .44327 .23125 .15181

5600 .44977 .26968 .59959 .51574 .31174 .21361 7311 .76600 .44497 .58090 .50375 .24424 .14364

5618 .83917 .51033 .60813 .49131 .26664 .17940 7363 .95294 .49699 .52153 .21947 -.03585 .00592

5650 .63765 .29647 .46494 .47550 .38917 .20704 7422 .72591 .44218 .60914 .49507 .26821 .17906

5656 .56724 .32609 .57487 .51331 .25919 .16928 7431 .50035 .29382 .58722 .50413 .27898 .17650

5658 .53971 .33034 .61206 .51643 .30699 .20861 7481 .41020 .25009 .60968 .55859 .35133 .23500

5661 .74655 .49846 .66768 .64313 .41855 .31631 7497 .74459 .42953 .57687 .48335 .24538 .17615

5666 .60286 .38437 .63757 .53641 .32195 .24495 7498 .75629 .44192 .58434 .48175 .24148 .18407

5695 .79739 .44821 .56210 .44108 .24705 .17078 7499 .68918 .39149 .56805 .47218 .23995 .15839

5742 .37571 .24604 .65487 .67329 .57093 .52720 7531 .73629 .41234 .56003 .40489 .18392 .10829

5766 1.0574 .57229 .54123 .38271 .13802 .04368 7534 .72690 .44824 .61665 .51067 .30941 .23174

5770 .56232 .32582 .57942 .47809 .24978 .15235 7556 .72577 .42615 .58716 .49085 .26343 .17439

5775 .36417 .20523 .56355 .30690 -.11308 -.08810 7594 .85730 .49421 .57647 .44474 .23915 .16156

5779 .80333 .43974 .54739 .40638 .16808 .03413 7596 .81027 .47105 .58135 .37687 .12897 .07379

5840 .70273 .41506 .59064 .45251 .22161 .13244 7608 .69238 .43142 .62309 .47802 .25304 .16886

5890 .40336 .26395 .65438 .52422 .28943 .18494 7622 .25737 .19942 .77482 .68197 .43872 .29883

5891 .43867 .23059 .52565 .38539 .17140 .10276 7700 .82390 .48729 .59145 .44398 .22614 .14592

5897 .79375 .45762 .57653 .46774 .22971 .16109 7706 .62276 .37027 .59456 .49740 .27551 .17739

Appendix 4–2.5. L-moments of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
206 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 0.80519 0.47914 0.59507 0.49209 0.28075 0.17880 8910 0.83118 0.49765 0.59873 0.40290 0.14408 0.05599

7745 .90960 .54698 .60135 .47467 .26671 .18474 8911 .64338 .39337 .61141 .46169 .23603 .15528

7922 .28676 .16478 .57463 .45934 .25232 .15425 8924 .35789 .18774 .52457 .41736 .20718 .10536

7936 .91140 .52016 .57072 .44433 .23577 .16830 8929 1.4943 1.0552 .70613 .61669 .48725 .54717

7943 .46788 .30671 .65554 .51221 .26682 .16364 8942 .88892 .50457 .56762 .44669 .22652 .14968

7944 .54000 .33991 .62947 .46177 .21511 .10481 8944 .75642 .45684 .60395 .45876 .24459 .16499

7945 .59669 .40840 .68445 .54801 .30882 .20814 8996 .76254 .46362 .60800 .47264 .25112 .16960

7947 .88154 .55325 .62759 .54978 .33266 .24756 9014 .96294 .43875 .45564 .32375 .20106 .08604

7948 .67858 .42708 .62937 .50804 .27622 .16996 9037 .38393 .22880 .59593 .53313 .33941 .23816

7951 .79741 .43670 .54765 .40449 .20261 .13151 9106 .36639 .23932 .65319 .59900 .40979 .32544

7953 .58927 .37587 .63785 .53327 .29740 .16221 9107 .41839 .24834 .59357 .45102 .18256 .12444

7981 .66670 .41324 .61982 .47141 .21171 .09803 9129 .47753 .32564 .68194 .59215 .34924 .21514

7990 .66745 .45804 .68626 .57759 .33232 .18069 9163 .66365 .38621 .58195 .47032 .24905 .15492

7992 .95353 .51515 .54025 .27057 -.02989 -.01579 9213 .67395 .41278 .61248 .44820 .22462 .14873

7997 .59000 .36630 .62085 .51374 .30800 .21858 9214 1.2668 .83232 .65701 .63027 .44189 .31677

7999 .38875 .25650 .65981 .54080 .30815 .17772 9222 .71012 .43297 .60971 .46956 .23358 .13957

8022 .54778 .33040 .60316 .43354 .12207 .02274 9248 .54187 .30510 .56305 .41993 .17647 .09918

8023 .54879 .32108 .58507 .50289 .27994 .18594 9266 .62045 .34338 .55344 .39468 .14700 .05624

8047 .70935 .40472 .57055 .44086 .21862 .14116 9270 .42289 .23402 .55340 .51261 .28741 .18523

8060 .56142 .37343 .66517 .53070 .25473 .11794 9295 .25133 .15822 .62954 .53667 .32729 .21395

8062 .85121 .60100 .70606 .55291 .27905 .13495 9304 -- -- -- -- -- --

8068 .33600 .21322 .63458 .52096 .28187 .15252 9307 .67148 .36017 .53638 .42088 .21390 .12496

8081 .70016 .44024 .62877 .53983 .31787 .22081 9328 .53184 .30781 .57876 .45057 .23452 .15322

8089 .53757 .29983 .55776 .34847 .11078 .05739 9329 .72500 .39144 .53992 .25802 .05377 .26398

8221 .82412 .38779 .47056 .29905 .14697 .03923 9345 -- -- -- -- -- --

8252 .53522 .30810 .57564 .47827 .25128 .15581 9363 .59474 .40431 .67981 .54954 .31295 .20840

8265 .88431 .54395 .61511 .49350 .28046 .19632 9364 .66368 .45427 .68447 .55106 .31338 .21186

8289 .52500 .23628 .45005 .15446 -.01247 .01306 9365 .48000 .29542 .61545 .60492 .42249 .31311

8305 .35878 .20347 .56713 .52154 .31388 .20236 9371 .73058 .41978 .57459 .39914 .12219 .03001

8335 .88990 .49747 .55902 .41536 .22032 .15404 9417 .71727 .41806 .58284 .42652 .19689 .11882

8400 .45131 .26436 .58577 .50540 .31887 .22371 9419 .63370 .39782 .62778 .46542 .22937 .14837

8445 .78962 .48022 .60816 .47554 .25339 .16892 9435 .55119 .30136 .54674 .45594 .30909 .27169

8446 .71300 .41021 .57533 .45061 .22055 .13418 9491 .79285 .46217 .58293 .44915 .22487 .14361

8451 .55856 .33887 .60669 .49437 .26936 .17256 9499 .58857 .33988 .57748 .47109 .21471 .11941

8531 .73233 .41406 .56540 .43353 .22531 .14534 9522 2.0725 1.4675 .70808 .56072 .26040 .15697

8541 .69418 .39790 .57320 .42843 .21701 .12740 9527 .51606 .29223 .56628 .50062 .26224 .16171

8544 .80449 .49505 .61536 .51917 .28285 .19444 9532 .70330 .40924 .58189 .46554 .25032 .16904

8545 .40200 .18771 .46695 .17855 .10178 .21255 9544 -- -- -- -- -- --

8563 .79008 .45108 .57093 .47398 .24495 .17366 9565 .62227 .36633 .58870 .49157 .26943 .16906

8566 .56966 .33511 .58827 .44550 .21001 .12022 9570 .58512 .32587 .55694 .48326 .22261 .12514

8583 .62273 .35548 .57083 .48139 .21262 .13392 9574 .61053 .34854 .57088 .45302 .15700 .08150

8584 .71361 .41033 .57500 .45394 .21928 .13783 9588 .63232 .40165 .63519 .54076 .29757 .17699

8623 .73314 .40647 .55443 .44579 .22291 .14690 9665 .81309 .46685 .57417 .45425 .24270 .16692

8625 .70020 .40933 .58459 .45881 .24854 .17099 9715 .72551 .41665 .57429 .44680 .23263 .15578

8630 .53783 .30364 .56456 .44117 .20562 .11417 9729 .59963 .37506 .62549 .46558 .23186 .15284

8631 .61150 .35707 .58393 .47111 .25050 .15084 9772 .77584 .50483 .65069 .54090 .32107 .21966

8646 .69673 .40432 .58032 .44170 .22188 .14409 9814 .67125 .40808 .60795 .45551 .21103 .11327

8647 .50962 .29415 .57719 .50555 .27042 .17192 9815 .79120 .47593 .60153 .49215 .27032 .18093

8677 .69096 .38826 .56190 .46237 .24744 .16000 9816 .69154 .43881 .63455 .52466 .27427 .14765

8696 1.0079 .60047 .59576 .44235 .21963 .10008 9817 .66834 .37643 .56323 .46507 .24141 .16806

8743 .85888 .49955 .58163 .45218 .23918 .15886 9829 .42445 .25268 .59530 .52872 .30568 .18797

8761 .49820 .28459 .57124 .50437 .26819 .16125 9830 .33007 .20039 .60712 .49342 .23717 .11141

8778 .81021 .45790 .56517 .44889 .23150 .15533 9858 .52269 .29731 .56880 .45955 .24515 .14706

8845 .76350 .46697 .61162 .50564 .27016 .17261 9893 .65987 .38521 .58376 .46109 .24154 .15849

8859 .86130 .47837 .55540 .41421 .21800 .14925 9916 .86990 .47861 .55019 .40638 .18260 .11491

8898 .81788 .47064 .57543 .45234 .24125 .14801 9976 .61335 .37339 .60877 .50948 .27611 .17630

8908 .73967 .43557 .58888 .46861 .29014 .23783

Appendix 4–2.5. L-moments of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 207

Appendix 4–2.6. L-moments of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0015 -- -- -- -- -- -- 1154 0.90333 0.55334 0.61255 0.43539 0.19295 0.11139

0016 0.67031 0.42029 0.62701 0.47084 0.24139 0.15624 1165 .67339 .39015 .57938 .42119 .19124 .11441

0050 .79812 .43997 .55125 .38878 .18701 .13136 1185 .48956 .27330 .55825 .43493 .22332 .14104

0054 .61484 .36430 .59251 .57910 .45730 .33613 1186 .96615 .61283 .63430 .50245 .27190 .15359

0120 1.8100 1.1549 .63807 .43976 .23869 .31158 1188 .66167 .28300 .42771 .31684 .28151 .87750

0145 .69564 .48582 .69838 .59541 .38842 .29582 1245 1.7025 1.2922 .75900 .67528 .50077 .40718

0146 .67852 .33561 .49463 .31364 .13239 .10996 1246 .95151 .53175 .55884 .43870 .22745 .16620

0174 .59562 .34650 .58174 .50769 .27763 .18436 1267 .64599 .41289 .63916 .54883 .35876 .27738

0178 .64700 .41967 .64863 .39714 .00318 -.04554 1304 .83624 .50264 .60108 .47624 .28111 .21179

0179 .51592 .32372 .62746 .53243 .31367 .20839 1325 .97351 .58664 .60260 .46251 .23547 .15343

0202 .80726 .43945 .54436 .42280 .18498 .11030 1429 .85684 .51207 .59763 .47914 .26661 .18072

0206 .91253 .49834 .54611 .41418 .20118 .12549 1431 .92773 .54197 .58418 .44416 .23106 .15560

0208 -- -- -- -- -- -- 1432 .91823 .53591 .58364 .43849 .23331 .15808

0211 .53554 .34480 .64384 .50036 .26423 .16807 1433 .91627 .53312 .58184 .45788 .25402 .16307

0244 .88200 .48150 .54592 .32550 .09877 .07126 1434 .91665 .53370 .58223 .43956 .22229 .14374

0248 .53947 .31208 .57850 .49237 .26742 .16794 1435 .91548 .52642 .57502 .41569 .19974 .13081

0262 .95981 .55376 .57695 .44470 .24314 .16607 1436 .95232 .54818 .57563 .43767 .22776 .14678

0271 1.8110 1.0179 .56206 .22579 -.05162 .01053 1437 .66421 .50994 .76774 .66553 .39979 .22678

0380 .96607 .59892 .61996 .50215 .29142 .19976 1438 .89114 .51596 .57899 .43029 .21713 .14187

0394 .84333 .52600 .62372 .42839 .11280 -.53866 1462 -- -- -- -- -- --

0408 2.9470 1.9992 .67839 .50203 .14844 -.14600 1492 .77719 .44967 .57859 .46670 .24056 .16288

0427 .95455 .59072 .61885 .48517 .21461 .15358 1500 1.3608 .96808 .71142 .62914 .44822 .42129

0428 .79794 .51200 .64166 .48479 .25132 .16486 1528 .75619 .45800 .60567 .50201 .26631 .17398

0429 .98252 .64013 .65152 .49142 .25244 .16263 1541 1.1475 .68429 .59634 .50276 .30670 .22725

0463 .69953 .42079 .60153 .55679 .38119 .26197 1569 .94537 .59664 .63112 .49661 .28346 .21993

0493 1.3460 .42867 .31847 .18040 .21962 .33152 1632 .67000 .25700 .38358 -.24514 .08560 -.27237

0495 .49518 .27274 .55078 .42961 .22263 .13374 1641 .63013 .34673 .55025 .42383 .22629 .14985

0496 .29636 .14667 .49489 .43211 .27007 .09429 1646 .60037 .34343 .57204 .48575 .24602 .15141

0498 .23667 .07083 .29930 -.01176 .36975 .29804 1663 1.5333 1.0262 .66927 .58567 .39145 .32376

0509 .89954 .52845 .58747 .47840 .27171 .19050 1671 .91678 .54068 .58976 .46296 .23675 .15276

0518 .94697 .54250 .57288 .44457 .23730 .15847 1680 .83327 .47870 .57448 .45270 .24883 .16792

0521 .63074 .38165 .60509 .53716 .33917 .19105 1694 .71000 .41457 .58390 .47358 .19081 .09314

0556 .73850 .42516 .57571 .44472 .19311 .09387 1696 .65460 .37774 .57706 .43735 .21976 .13893

0569 1.1083 .68077 .61425 .49363 .26556 .17138 1697 .55311 .33424 .60430 .47710 .22422 .10571

0572 .95422 .57434 .60189 .47608 .26892 .19052 1698 .69026 .39905 .57811 .47558 .25798 .16446

0576 .79301 .54830 .69141 .56675 .33082 .24174 1720 .78138 .49046 .62768 .52592 .22156 .09375

0580 .87496 .53966 .61678 .50454 .28239 .18635 1761 .55750 .34514 .61908 .44339 .19984 .10268

0587 1.0210 .62574 .61285 .47044 .25735 .18526 1773 1.0870 .61117 .56224 .42905 .22177 .14815

0605 1.0038 .49582 .49395 .37653 .20812 .15157 1810 .87167 .43924 .50391 .43512 .24710 .13723

0639 .87057 .53437 .61382 .50624 .26877 .17662 1823 1.6109 1.1005 .68318 .48136 .09122 -.16259

0655 -- -- -- -- -- -- 1870 .93265 .54231 .58147 .41726 .19232 .12377

0665 .87856 .52083 .59282 .44709 .23349 .15763 1875 1.4782 .64273 .43481 .27016 .09453 .06530

0689 .85197 .52956 .62158 .51542 .29611 .20047 1876 .94031 .50174 .53359 .34549 .11955 .07127

0690 .74009 .42338 .57207 .47484 .22957 .15142 1889 .92667 .58644 .63285 .47983 .26774 .19693

0691 .84808 .49204 .58018 .44227 .23932 .15974 1903 .63255 .33595 .53110 .44697 .23324 .16786

0708 .89390 .51140 .57210 .46569 .22033 .12268 1914 1.5640 .90711 .57999 .53926 .44167 .46834

0738 .89483 .50841 .56817 .43341 .23168 .15589 1920 .93138 .51368 .55152 .42365 .23935 .18331

0776 .61807 .37260 .60284 .49138 .26113 .16431 1921 1.0310 .58459 .56703 .43277 .22415 .14957

0779 .63902 .37305 .58379 .52949 .28233 .16622 1937 1.0081 .55458 .55010 .42309 .24006 .15749

0784 .62437 .37249 .59659 .49771 .26395 .16196 1956 1.0585 .61208 .57827 .43412 .22480 .15649

0786 .50325 .30936 .61472 .45736 .21943 .12678 1970 2.6190 2.2461 .85762 .76658 .53007 .35981

0917 1.1635 .65608 .56389 .42828 .23225 .15035 2014 .74384 .51193 .68823 .52833 .26202 .14906

0923 2.9320 1.8871 .64363 .44292 .07957 -.20193 2015 .79898 .55285 .69194 .55718 .31893 .21249

0926 .85831 .49832 .58058 .44361 .22195 .13924 2019 2.1930 1.4310 .65253 .44840 .13996 -.05264

0950 .47074 .30339 .64450 .58448 .37265 .25256 2024 .90044 .49860 .55373 .42831 .23303 .16159

0996 2.8512 1.8223 .63913 .35228 .01029 .01068 2042 .20778 .09611 .46257 .20231 .25681 .28324

1013 .80473 .52922 .65763 .62695 .41366 .31595 2043 .33597 .18768 .55863 .42287 .23921 .18008

1017 .73993 .42976 .58081 .45571 .24242 .16319 2048 .77135 .46904 .60807 .49718 .25770 .16554

1042 3.1971 1.8843 .58937 .49356 .34647 .18575 2050 .51019 .36823 .72175 .60470 .35899 .23554

1048 1.3318 .85709 .64355 .68420 .65069 .58054 2051 .59922 .36581 .61048 .46486 .20948 .12113

1053 .74575 .44058 .59079 .44987 .22014 .13745 2053 .37500 .24433 .65156 .57299 .32469 .09550

1057 .66765 .38758 .58052 .45256 .23491 .14617 2073 .90232 .53568 .59367 .48565 .29687 .21406

1063 2.2010 1.2990 .59019 .29920 .03699 .12394 2082 .53087 .31320 .58997 .49572 .27913 .18342

1068 .90157 .50440 .55947 .42203 .21210 .13845 2086 .91586 .52194 .56990 .44164 .22883 .15083

1080 .54574 .29560 .54165 .44224 .26401 .18245 2088 1.1531 .59204 .51342 .32416 .19963 .26294

1081 .90667 .52308 .57693 .45852 .26072 .17235 2090 .93060 .50377 .54134 .42428 .21424 .14645

1133 .33636 .21109 .62757 .35688 .04967 .10336 2096 .89803 .50530 .56267 .44351 .24217 .16161

1136 .71789 .50322 .70097 .56753 .32128 .20599 2128 .91139 .52221 .57298 .40156 .17066 .11000

1138 1.7167 .95694 .55744 .44798 .35745 .25495 2131 .82849 .46467 .56087 .44201 .22869 .15365

1139 1.0398 .61227 .58882 .39460 .13053 .04507 2142 2.2450 .63071 .28094 -.22537 .13250 -.21348

Appendix 4–2.6. L-moments of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
208 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 0.66000 0.48181 0.73001 0.66266 0.51556 0.46974 3463 0.89171 0.58866 0.66014 0.55719 0.37378 0.31178

2206 1.0760 .64438 .59889 .45169 .23063 .15443 3476 .84173 .50070 .59484 .46112 .24734 .16506

2238 .50606 .33051 .65311 .50274 .22884 .09639 3485 1.5179 1.1217 .73900 .61274 .27771 .04666

2240 .57113 .33643 .58906 .40021 .16378 .07767 3507 .97564 .55997 .57396 .44075 .20560 .12971

2242 .83256 .49023 .58883 .41657 .20626 .13587 3546 1.0913 .62222 .57018 .44072 .23775 .15758

2244 .90830 .54323 .59808 .45212 .23776 .15163 3547 .84948 .47033 .55367 .38805 .17023 .11079

2247 .97323 .58925 .60546 .41376 .17180 .09861 3579 .95098 .49108 .51640 .31005 .08447 .05900

2309 1.1042 .58091 .52611 .41904 .25383 .18332 3642 .97441 .55865 .57332 .44596 .23684 .15892

2312 1.0118 .52803 .52190 .39689 .20397 .12473 3646 .85049 .48771 .57345 .44355 .23550 .15614

2334 1.2998 .69257 .53284 .37378 .20804 .11767 3668 3.1500 1.5957 .50658 .48791 .58326 .60385

2336 .88167 .46903 .53198 .35974 .13586 .07514 3673 2.1460 1.5351 .71534 .55588 .33266 .35242

2354 .52111 .30837 .59175 .42534 .14148 .06067 3686 .94092 .51460 .54691 .41327 .20535 .14766

2355 .92394 .58633 .63459 .50673 .29102 .17547 3691 .88690 .50392 .56818 .44122 .22797 .15188

2357 .60683 .42582 .70172 .55921 .30362 .19125 3734 3.4370 2.5886 .75314 .60574 .36117 .27098

2360 .60367 .41021 .67953 .54682 .31020 .21207 3771 .94724 .53562 .56545 .43107 .19677 .13286

2361 .71117 .48810 .68633 .63180 .45875 .38331 3789 .32552 .18371 .56435 .45743 .26123 .17032

2394 .94322 .54865 .58169 .43586 .21921 .13826 3826 .77818 .41065 .52770 .40876 .23842 .16704

2404 .87875 .51573 .58689 .45564 .24552 .16750 3831 .97215 .55776 .57373 .41448 .18881 .11636

2415 1.0861 .61453 .56581 .43320 .22983 .14967 3841 .92945 .52721 .56723 .43398 .22100 .14284

2462 1.0287 .58140 .56518 .44014 .23044 .14627 3871 .76105 .43654 .57359 .44670 .23861 .15585

2528 .77518 .43060 .55549 .35547 .07078 -.02533 3884 1.4200 .87679 .61746 .35001 -.00861 -.06024

2617 .66702 .39552 .59297 .49728 .31530 .23250 3941 1.1081 .61188 .55219 .29057 .07774 .11667

2619 .65089 .35550 .54617 .41534 .21439 .13852 3963 -- -- -- -- -- --

2621 .70393 .40867 .58055 .46720 .24840 .15133 4040 .74508 .41249 .55363 .43512 .24773 .16515

2675 .93659 .55401 .59152 .48882 .27726 .19224 4058 1.7150 1.3341 .77790 .75884 .63070 .54819

2676 .98411 .58163 .59102 .47848 .24642 .17980 4098 .55009 .30781 .55956 .47660 .24486 .14778

2679 .74955 .48256 .64380 .54103 .29910 .18317 4100 .73688 .44331 .60160 .50024 .30364 .21378

2715 .83102 .46508 .55965 .43168 .23637 .16123 4137 .89166 .48773 .54699 .43082 .22268 .16415

2744 .72985 .41688 .57118 .44525 .22788 .14912 4191 .82277 .49527 .60196 .48567 .24979 .15215

2758 .67222 .47109 .70080 .59855 .34821 .20048 4256 -- -- -- -- -- --

2794 .47400 .32244 .68026 .46468 .11527 -.05048 4257 1.1053 .61877 .55984 .43084 .22997 .15647

2797 .30586 .19426 .63512 .51226 .28966 .19671 4258 1.1057 .61361 .55494 .43161 .22318 .15040

2811 .71054 .42206 .59400 .47582 .23756 .14446 4278 .87176 .51368 .58924 .44919 .23081 .14770

2813 .78316 .42778 .54622 .36840 .11625 -.04478 4299 .42290 .19374 .45813 .27534 .08740 .03753

2814 .36500 .28767 .78813 .70742 .47980 .33121 4300 1.0013 .63784 .63698 .48786 .26310 .17702

2815 .71477 .41003 .57365 .50985 .27860 .16385 4305 .95836 .61578 .64253 .48347 .25099 .16751

2818 .77444 .46549 .60107 .47508 .26919 .19007 4307 1.0317 .68548 .66441 .54844 .34514 .25188

2986 1.2019 .64588 .53737 .37037 .18414 .14740 4309 1.0564 .62661 .59315 .45163 .24133 .16488

3005 .82772 .45944 .55506 .42570 .22099 .15345 4311 1.0993 .64117 .58327 .43362 .21724 .13939

3033 .35235 .20493 .58162 .50579 .30755 .21336 4313 1.1813 .67521 .57156 .45690 .24712 .15282

3034 -- -- -- -- -- -- 4319 .87967 .48618 .55269 .44246 .21955 .11746

3047 1.6455 1.1853 .72033 .72071 .67403 .62868 4329 1.0505 .61041 .58108 .45191 .24365 .15942

3103 .99320 .64087 .64525 .58301 .31180 .14061 4331 -- -- -- -- -- --

3133 .96033 .54023 .56254 .42956 .23564 .15905 4375 .88340 .52381 .59295 .50771 .28501 .20053

3156 1.1022 .66982 .60772 .52089 .32339 .23033 4392 1.1937 .70945 .59432 .45405 .23681 .15169

3171 .90544 .51246 .56598 .43480 .22911 .14731 4425 .56246 .32679 .58100 .49108 .25663 .16008

3189 .49952 .29405 .58867 .51453 .29972 .19686 4440 .76499 .44772 .58526 .45110 .24657 .17048

3260 .75533 .44655 .59120 .41225 .16356 .07791 4476 .85022 .46114 .54238 .42444 .22307 .14829

3267 .65826 .44718 .67933 .59815 .39451 .28190 4498 .27667 .12389 .44779 .14029 .03587 .01025

3270 .70027 .39438 .56319 .47154 .24898 .17709 4517 .85080 .48960 .57545 .43196 .21997 .13654

3272 .21417 .10992 .51326 .21406 -.02228 .00758 4520 .85110 .47632 .55966 .44328 .21954 .15606

3277 .20000 .11879 .59394 .51276 .36650 .40115 4525 1.8142 1.4831 .81751 .77134 .60484 .45318

3278 .61790 .36167 .58532 .47168 .23862 .14020 4563 .93800 .60162 .64138 .43849 .13165 -.00992

3280 .41613 .25799 .61997 .48289 .23267 .11937 4570 .72366 .42284 .58430 .47752 .25644 .16154

3281 .41789 .21622 .51739 .36792 .18523 .12351 4577 1.0558 .58402 .55314 .43154 .24442 .16785

3283 .82776 .51847 .62636 .47225 .24586 .15377 4591 .93660 .54456 .58142 .44107 .23052 .15222

3284 .88606 .50781 .57311 .44254 .22822 .14358 4670 .71530 .41324 .57772 .45834 .24163 .15814

3285 .91715 .51394 .56036 .43248 .20564 .12954 4671 .61535 .37448 .60856 .43505 .18987 .10521

3329 .82064 .50334 .61335 .49224 .27616 .19225 4679 .90840 .53567 .58969 .48086 .26391 .18113

3335 1.1560 .64953 .56188 .45692 .25754 .18257 4696 .68571 .19905 .29028 -.06029 .34450 -.36842

3370 .97098 .55038 .56683 .42922 .22670 .14066 4703 .68342 .38831 .56818 .44942 .23204 .14822

3410 .69733 .39016 .55951 .45605 .23396 .14868 4704 1.2407 .72823 .58695 .43826 .21452 .12627

3415 .90096 .51773 .57464 .45013 .23894 .15729 4731 .69154 .46797 .67670 .56125 .35570 .25900

3430 .93817 .60932 .64948 .50696 .27918 .18585 4792 .88996 .49296 .55392 .42230 .18705 .11922

3431 1.0675 .73398 .68760 .56810 .34736 .24937 4819 1.1060 .55606 .50278 .32657 .14297 .10497

3441 .93080 .53950 .57961 .49593 .30349 .19496 4852 1.2882 .70909 .55046 .36803 .11154 -.13077

3442 .54641 .31827 .58247 .46720 .23528 .12260 4866 .92590 .52047 .56212 .42777 .22347 .14778

3446 .60749 .33025 .54363 .41957 .22684 .16017 4876 1.1989 .70110 .58480 .46354 .23586 .14120

3460 1.0974 .56994 .51935 .30223 .23792 .32756 4878 1.2259 .70021 .57120 .43122 .22073 .13458

3462 .68228 .35786 .52451 .42880 .27102 .21526 4880 .62829 .36525 .58134 .47671 .26181 .16877

Appendix 4–2.6. L-moments of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 209

4920 0.79432 0.47599 0.59924 0.48459 0.25134 0.16022 5957 0.86640 0.49659 0.57316 0.45455 0.24283 0.16722

4934 .46400 .35400 .76293 .76836 .60452 .49153 5958 .81478 .45039 .55277 .36902 .15251 .08490

4972 .80722 .45931 .56901 .45017 .23796 .15386 5973 .65371 .44593 .68214 .55160 .29237 .16834

4973 1.1204 .61055 .54497 .43593 .25314 .16280 5996 .83384 .47572 .57052 .44106 .22791 .15641

4974 .65453 .38797 .59274 .48706 .27815 .18358 6017 .66071 .42798 .64775 .51703 .27374 .15372

4975 1.0695 .57518 .53779 .40896 .21140 .14922 6024 1.2655 .73452 .58043 .43246 .23801 .18085

4978 .80971 .49542 .61185 .46045 .21966 .11653 6050 .78471 .38838 .49494 .41151 .13079 .02860

4979 2.4062 1.4952 .62137 .49624 .50460 .61830 6104 .60614 .36582 .60352 .51145 .29374 .19235

4982 .72795 .42102 .57836 .44499 .22305 .13340 6108 1.1082 .61577 .55565 .41302 .20793 .13559

5018 .83556 .46663 .55846 .40933 .20354 .13834 6136 .56306 .31745 .56379 .47268 .23931 .14379

5048 .61439 .36822 .59933 .51789 .28687 .19297 6166 .55317 .30986 .56014 .41603 .16975 .06747

5049 .58333 .33599 .57599 .54993 .33553 .25483 6176 1.0763 .62442 .58017 .46917 .27972 .17070

5056 -- -- -- -- -- -- 6177 1.0910 .62168 .56981 .44453 .23977 .16153

5057 .53245 .36208 .68002 .54845 .29746 .17489 6210 .98156 .55842 .56890 .43258 .22095 .14843

5060 .82675 .56524 .68369 .55441 .32413 .21798 6211 1.0487 .61106 .58269 .41525 .19660 .12463

5081 1.0146 .56289 .55478 .40168 .20744 .13923 6270 1.1363 .61750 .54343 .41680 .21565 .14496

5094 .95013 .54083 .56922 .44336 .23329 .15025 6275 -- -- -- -- -- --

5113 .84896 .52381 .61700 .51403 .28617 .18455 6276 2.2590 1.4599 .64625 .44341 .19803 .21851

5114 -- -- -- -- -- -- 6335 .94414 .52678 .55794 .41153 .20816 .13832

5123 .81417 .49250 .60491 .49503 .19192 -.08276 6434 .75133 .34752 .46254 .28912 .16763 .12480

5192 .94316 .53938 .57189 .44333 .22803 .13663 6504 .62121 .36440 .58659 .48340 .25162 .15830

5193 .92539 .54037 .58393 .45068 .23367 .15675 6558 .80545 .50000 .62077 .46642 .27720 .32125

5224 1.1796 .68516 .58085 .46161 .28618 .20050 6615 .73960 .44459 .60112 .53534 .31379 .22472

5228 .90028 .53310 .59215 .42928 .20312 .12971 6660 .91921 .52313 .56911 .43841 .22653 .11947

5235 .82250 .48361 .58797 .44329 .29137 .24974 6663 1.0153 .56373 .55524 .42427 .24126 .16296

5247 .64372 .36189 .56218 .44471 .21701 .12562 6734 .65992 .38522 .58373 .44812 .23513 .14975

5258 .90800 .52828 .58180 .46846 .26364 .16941 6736 .65313 .38629 .59144 .50652 .28170 .18339

5303 .81223 .50804 .62549 .52032 .30803 .21883 6740 1.7755 .94418 .53180 .15643 -.16599 -.04750

5312 .79877 .46550 .58277 .47712 .24764 .16555 6750 1.1023 .77331 .70153 .57108 .33003 .20845

5341 2.5910 2.0057 .77409 .69727 .43321 .12251 6757 .98643 .57145 .57931 .43282 .22608 .15231

5342 -- -- -- -- -- -- 6775 .61948 .35900 .57952 .43933 .22360 .13916

5348 1.0913 .59261 .54301 .39426 .18206 .10993 6776 .64512 .36540 .56641 .46235 .24426 .15849

5358 .70764 .41471 .58604 .46640 .24634 .15038 6788 .96214 .53494 .55599 .41995 .22234 .11625

5398 1.0185 .57397 .56353 .42508 .22307 .14584 6792 .49942 .28026 .56116 .45881 .23255 .13887

5410 .62867 .37076 .58976 .48979 .27225 .18107 6794 3.4322 2.0500 .59728 .32466 -.08420 -.28970

5411 .54831 .35830 .65346 .51368 .27912 .18226 6834 1.1021 .61270 .55593 .43180 .22209 .15018

5424 1.1781 .73676 .62539 .45137 .22439 .15019 6893 .44876 .25621 .57094 .52543 .31318 .21032

5429 .86021 .52264 .60758 .47156 .24811 .16766 6935 .63025 .36474 .57872 .50199 .27921 .18295

5431 1.2050 .61227 .50811 .32294 .03770 -.04863 6981 .91674 .51930 .56646 .42637 .22535 .15100

5461 1.0228 .58681 .57374 .44086 .24085 .16415 7020 .93424 .57834 .61905 .50028 .29219 .19883

5463 1.0192 .57513 .56429 .44291 .22506 .15156 7060 .71188 .40850 .57384 .47545 .25067 .16202

5471 .31308 .19769 .63145 .51539 .27626 .25897 7066 1.0641 .59727 .56129 .42288 .21879 .14165

5477 1.4292 1.1490 .80398 .83620 .75666 .71198 7074 .59266 .35680 .60203 .50609 .28971 .19551

5528 .98316 .54507 .55441 .42052 .22547 .14466 7097 1.0117 .55796 .55153 .40369 .17865 .08601

5579 -- -- -- -- -- -- 7116 .63741 .36728 .57620 .45928 .26325 .18407

5580 1.0413 .47124 .45253 .07353 -.09547 .01191 7140 1.0641 .68038 .63938 .51534 .28744 .18493

5589 .44667 .23915 .53541 .30841 .07831 .03602 7173 1.2119 .78362 .64661 .49837 .27529 .18230

5590 .53194 .30638 .57596 .45235 .24682 .17309 7174 1.1426 .73417 .64255 .49516 .27292 .18664

5591 .49909 .26829 .53756 .41810 .23183 .16156 7213 .93948 .52957 .56369 .41700 .20009 .11489

5592 .44663 .25979 .58167 .47097 .26171 .16920 7243 .79552 .45240 .56868 .45094 .23328 .15723

5594 .41829 .24360 .58237 .51771 .31867 .21273 7262 .27576 .15930 .57767 .43081 .23499 .17376

5595 -- -- -- -- -- -- 7274 .82773 .45675 .55181 .45335 .25962 .16863

5596 .58105 .32687 .56254 .51151 .27719 .18885 7300 .79976 .46076 .57612 .44038 .23774 .15835

5600 .52726 .31650 .60028 .50765 .30469 .22187 7311 .83261 .47387 .56914 .46861 .20711 .13283

5618 1.5492 1.0310 .66551 .60663 .49194 .47512 7363 1.4727 1.1036 .74938 .62779 .35695 .22103

5650 .90333 .43970 .48675 .36030 .13094 -.08626 7422 .88267 .52998 .60043 .47866 .26277 .18151

5656 .68913 .39917 .57924 .49638 .25674 .17184 7431 .57499 .33774 .58739 .49140 .26851 .17578

5658 .64164 .38748 .60390 .50000 .29350 .19989 7481 .47044 .28696 .60997 .54530 .33665 .22676

5661 .95515 .62775 .65723 .59930 .37625 .27477 7497 .93620 .53482 .57127 .45917 .24144 .18248

5666 .76727 .50022 .65194 .54548 .32009 .19943 7498 .94056 .55225 .58715 .47948 .26111 .19771

5695 .95183 .53016 .55699 .43318 .24090 .16205 7499 .84129 .47364 .56299 .45511 .23651 .15712

5742 .40462 .27462 .67871 .68806 .57805 .54427 7531 .88969 .49695 .55857 .41353 .20315 .11536

5766 2.5756 1.6425 .63773 .58126 .33548 .06393 7534 .85481 .51797 .60595 .49936 .31174 .24202

5770 .69720 .40853 .58596 .47018 .24210 .14367 7556 .88165 .51240 .58118 .46945 .24581 .15707

5775 .54625 .31696 .58025 .32282 .00732 .07042 7594 1.0573 .60092 .56834 .42975 .22704 .15262

5779 .80333 .43974 .54739 .40638 .16808 .03413 7596 .98295 .55970 .56940 .37104 .14306 .09265

5840 .81683 .47757 .58466 .44139 .22110 .13627 7608 .86374 .52613 .60913 .45367 .23354 .16219

5890 .48088 .31131 .64736 .51466 .28432 .18639 7622 .28765 .21882 .76074 .64503 .39142 .28283

5891 .50589 .25641 .50686 .34837 .14809 .09284 7700 1.0438 .59902 .57389 .42573 .22009 .14311

5897 .97105 .54858 .56493 .44455 .22533 .15404 7706 .73926 .43821 .59277 .48595 .26946 .17978

Appendix 4–2.6. L-moments of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
210 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 0.89592 0.53734 0.59976 0.50568 0.31166 0.21059 8910 1.0869 0.68923 0.63411 0.45688 0.16995 -0.00035

7745 1.0854 .63831 .58807 .45236 .24795 .16768 8911 .81349 .48541 .59670 .43858 .21877 .14560

7922 .33160 .19053 .57458 .45715 .25183 .15994 8924 .41957 .21776 .51901 .40290 .19662 .10312

7936 1.1618 .65266 .56176 .43011 .23513 .16544 8929 1.9018 1.4536 .76434 .70248 .57380 .62487

7943 .57049 .37005 .64865 .50021 .25589 .15374 8942 1.1250 .63058 .56051 .43425 .22805 .14686

7944 .71581 .41464 .57926 .37223 .12930 .04664 8944 .96431 .58365 .60526 .47301 .26965 .18677

7945 .75653 .50488 .66736 .52562 .29443 .20245 8996 .96904 .57582 .59422 .44896 .23317 .15466

7947 1.1309 .68889 .60914 .51509 .30929 .22526 9014 1.6370 .92500 .56506 .44793 .35547 .38715

7948 .81946 .50905 .62121 .49060 .26865 .18205 9037 .43245 .26059 .60258 .53372 .33398 .23074

7951 .96067 .53057 .55229 .41200 .20882 .13311 9106 .41374 .27508 .66485 .61479 .42746 .33763

7953 .69840 .45544 .65213 .53106 .26216 .09578 9107 .49885 .30451 .61042 .45668 .20478 .16321

7981 .80288 .48759 .60729 .46193 .21000 .09964 9129 .58826 .38782 .65927 .54227 .28618 .16163

7990 .82553 .56334 .68240 .55141 .27890 .11657 9163 .79311 .45850 .57811 .45575 .23340 .13719

7992 1.3508 .71583 .52992 .23357 .01662 .09059 9213 .88426 .52726 .59628 .42320 .21167 .14940

7997 .65763 .39448 .59985 .49263 .30028 .21389 9214 2.3225 1.5869 .68327 .65500 .48982 .44772

7999 .47846 .29615 .61897 .48477 .24274 .07834 9222 .84295 .50276 .59643 .45357 .22442 .12530

8022 .57898 .34080 .58862 .41159 .11456 .02696 9248 .63022 .35236 .55911 .43208 .20273 .12674

8023 .64056 .37530 .58589 .48964 .26158 .17087 9266 .74232 .40333 .54334 .36354 .11731 .04654

8047 .85965 .48943 .56933 .43412 .21844 .14103 9270 .53433 .30981 .57980 .52647 .30939 .20821

8060 .71699 .48089 .67071 .51973 .22767 .08543 9295 .29000 .18838 .64959 .53376 .28862 .16118

8062 .93633 .64489 .68873 .52073 .23865 .10599 9304 -- -- -- -- -- --

8068 .45818 .28576 .62368 .50142 .28011 .14453 9307 .77885 .40781 .52361 .40217 .20928 .12547

8081 .84191 .52801 .62716 .52483 .30431 .21191 9328 .65150 .37850 .58097 .44184 .22033 .12467

8089 .64161 .36112 .56283 .36365 .15561 .11960 9329 .80556 .39139 .48586 .21282 .10828 .35121

8221 1.4010 .62856 .44865 .33065 .25307 .07804 9345 -- -- -- -- -- --

8252 .61959 .36007 .58114 .47750 .25063 .15702 9363 .76766 .50378 .65626 .51061 .27092 .17189

8265 1.1155 .67273 .60308 .47420 .26757 .18570 9364 .86509 .57947 .66984 .53174 .29792 .20301

8289 .68108 .25233 .37048 .09400 .02702 .11310 9365 .52571 .32648 .62101 .57626 .36416 .24864

8305 .42849 .24537 .57265 .50883 .29968 .19980 9371 .91134 .49208 .53995 .35581 .12540 .06905

8335 1.0959 .61507 .56124 .41695 .22946 .16536 9417 .87991 .50818 .57754 .42441 .21147 .13709

8400 .56931 .32516 .57114 .47755 .28600 .19161 9419 .79174 .48587 .61367 .44862 .22427 .14959

8445 .97302 .59285 .60929 .47652 .25522 .16839 9435 .64789 .35227 .54372 .43849 .29564 .25098

8446 .87484 .49965 .57113 .43281 .20964 .12880 9491 .98217 .56091 .57109 .43155 .22295 .14851

8451 .65263 .39193 .60054 .47946 .25288 .15558 9499 .70261 .40591 .57772 .45465 .20278 .11118

8531 .88242 .48907 .55424 .41462 .21602 .14332 9522 3.3160 2.8510 .85977 .83655 .63346 .40196

8541 .82039 .47511 .57912 .45968 .24446 .12412 9527 .63425 .36336 .57290 .48531 .24729 .14886

8544 .99473 .60203 .60522 .50930 .29770 .21274 9532 .85481 .49359 .57742 .45862 .25379 .17272

8545 .46385 .18744 .40409 .14924 .22311 .24383 9544 -- -- -- -- -- --

8563 .97976 .55585 .56733 .45672 .24021 .16490 9565 .74958 .44451 .59302 .47749 .24507 .14530

8566 .69757 .40694 .58336 .44351 .21994 .13843 9570 .71159 .39609 .55663 .46506 .22651 .14142

8583 .77659 .44193 .56906 .45530 .21157 .15245 9574 .77333 .42381 .54803 .38462 .13829 .09454

8584 .84774 .48261 .56929 .43638 .21352 .14114 9588 .75832 .48334 .63738 .53001 .28434 .16747

8623 .88519 .48659 .54970 .42490 .20729 .13208 9665 .99898 .56598 .56656 .43887 .23834 .16602

8625 .83718 .48249 .57633 .44819 .24234 .16105 9715 .88309 .50073 .56702 .43009 .22449 .15261

8630 .62414 .35512 .56898 .43725 .20355 .11700 9729 .73103 .45053 .61629 .45364 .22504 .14695

8631 .70266 .40619 .57807 .46310 .24939 .15496 9772 .95668 .60932 .63692 .51864 .30112 .20257

8646 .83744 .48340 .57723 .42823 .20975 .13570 9814 .74069 .44276 .59777 .40680 .15577 .09759

8647 .61314 .35675 .58185 .49348 .26348 .16498 9815 .97305 .57792 .59393 .47343 .26002 .18299

8677 .82549 .45985 .55707 .46363 .25018 .14968 9816 .80268 .50430 .62827 .51413 .26740 .13202

8696 1.9150 1.1621 .60685 .30892 -.00795 -.00574 9817 .79489 .44603 .56112 .44524 .22734 .15388

8743 1.0574 .61265 .57938 .44468 .23771 .15760 9829 .49204 .29559 .60075 .52148 .29859 .18747

8761 .58169 .33772 .58058 .49367 .25341 .14734 9830 .37445 .23084 .61646 .50414 .25651 .14911

8778 1.0246 .56426 .55072 .42054 .21681 .14549 9858 .61892 .35757 .57773 .45947 .24189 .14697

8845 .92356 .55839 .60461 .48487 .25428 .16530 9893 .78436 .45575 .58105 .45584 .24192 .15691

8859 1.0373 .57127 .55074 .40887 .21388 .14263 9916 1.0883 .58216 .53494 .38797 .18933 .12307

8898 .97207 .56196 .57811 .44873 .23710 .15280 9976 .73135 .44325 .60607 .49006 .25798 .16465

8908 .92458 .55679 .60221 .47594 .27052 .20928

Appendix 4–2.6. L-moments of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 211

Appendix 4–2.7. L-moments of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

0015 -- -- -- -- -- -- 1154 1.0909 0.66687 0.61131 0.43595 0.18909 0.09968

0016 0.79118 0.48981 0.61909 0.46236 0.23737 0.15231 1165 .76923 .43848 .57002 .39827 .17335 .10866

0050 .91381 .49599 .54277 .36918 .17518 .12981 1185 .52979 .29048 .54830 .41833 .21094 .13074

0054 .90762 .52595 .57949 .56502 .40463 .23852 1186 1.1214 .74634 .66552 .55270 .31849 .17137

0120 2.4300 1.4289 .58804 .37391 .36266 .63109 1188 .79400 .24600 .30982 .47967 .63415 .99187

0145 .83174 .57865 .69571 .58620 .38347 .30496 1245 2.2700 1.7197 .75759 .65134 .46016 .41373

0146 .79652 .46466 .58337 .49115 .29937 .20283 1246 1.1137 .60760 .54559 .41054 .20824 .14529

0174 .70855 .42322 .59730 .51718 .29293 .19873 1267 .75705 .49296 .65116 .56144 .35401 .25095

0178 1.0783 .68167 .63215 .38631 .08802 .11247 1304 .94767 .56918 .60061 .46823 .26488 .18790

0179 .60190 .37682 .62604 .52035 .30920 .22080 1325 1.1578 .68676 .59317 .44367 .22283 .14941

0202 .97635 .51893 .53150 .38752 .16198 .10048 1429 .99292 .58535 .58953 .45574 .23809 .15667

0206 1.0673 .58115 .54451 .41195 .21280 .14154 1431 1.0765 .61988 .57582 .42620 .21087 .13393

0208 -- -- -- -- -- -- 1432 1.0701 .62223 .58148 .42818 .22400 .15736

0211 .63835 .41033 .64280 .49210 .25216 .15683 1433 1.0545 .60584 .57455 .44194 .23834 .15050

0244 1.1025 .54528 .49459 .23652 .10489 .12652 1434 1.0527 .60463 .57437 .42003 .20579 .13405

0248 .60878 .35502 .58317 .48636 .26086 .16575 1435 1.0522 .59787 .56823 .40049 .18665 .11997

0262 1.1456 .65474 .57153 .43452 .23362 .15549 1436 1.1048 .62879 .56914 .42420 .21755 .13693

0271 2.2637 1.2830 .56677 .08448 -.35477 -.08114 1437 .74235 .56316 .75862 .63238 .34421 .18028

0380 1.0454 .65427 .62588 .51152 .30667 .21454 1438 1.0297 .59386 .57673 .42332 .21223 .13895

0394 1.0120 .66500 .65711 .38647 .00000 -.61353 1462 -- -- -- -- -- --

0408 3.6150 2.3568 .65195 .38445 -.01879 -.27959 1492 .89667 .51566 .57508 .46293 .25220 .18366

0427 1.1667 .71225 .61050 .45072 .17768 .10352 1500 1.8967 1.2144 .64030 .56914 .47785 .63181

0428 .98112 .60688 .61856 .45177 .22666 .15033 1528 .86383 .52256 .60494 .49085 .25732 .16870

0429 1.1947 .78517 .65723 .48742 .24042 .15088 1541 1.3909 .81288 .58442 .46655 .24108 .13002

0463 .77128 .46379 .60133 .56587 .40493 .29001 1569 1.1106 .68428 .61614 .47772 .26246 .19976

0493 1.4956 .48250 .32262 .14352 .19936 .12106 1632 .67000 .25700 .38358 -.24514 .08560 -.27237

0495 .54649 .30591 .55978 .44245 .23957 .16123 1641 .71292 .41009 .57523 .46961 .27395 .17998

0496 .29636 .14667 .49489 .43211 .27007 .09429 1646 .70323 .40609 .57746 .47575 .23813 .15119

0498 .26625 .06446 .24212 .16898 .58449 .20776 1663 1.7250 1.1112 .64419 .55230 .38097 .32276

0509 1.0437 .60566 .58032 .46235 .25955 .17930 1671 1.0829 .63784 .58901 .45374 .23000 .14949

0518 1.1293 .63612 .56330 .43341 .23941 .16061 1680 .96121 .55307 .57539 .45051 .24985 .17037

0521 .81095 .54033 .66629 .62740 .50018 .42490 1694 .79694 .47935 .60149 .50094 .23462 .13019

0556 .83211 .48167 .57886 .42870 .18454 .10576 1696 .75290 .43341 .57565 .42977 .21464 .13450

0569 1.3453 .80993 .60205 .46631 .24134 .15595 1697 .64968 .39436 .60701 .45516 .18473 .05616

0572 1.1454 .68515 .59818 .47119 .26786 .19326 1698 .80052 .46827 .58495 .47588 .25361 .15199

0576 .87760 .59624 .67940 .54310 .30618 .22818 1720 .94417 .58361 .61812 .49732 .21361 .11166

0580 .97576 .59380 .60855 .49330 .27284 .17337 1761 .71170 .43780 .61514 .43530 .20334 .12372

0587 1.2892 .77381 .60020 .44909 .24558 .17599 1773 1.2999 .72090 .55460 .41451 .21339 .13945

0605 1.1929 .57947 .48577 .33212 .16470 .11150 1810 1.1033 .52417 .47508 .38269 .14793 .07586

0639 1.0368 .62156 .59952 .47815 .24859 .16496 1823 2.2150 1.6693 .75363 .70646 .52546 .32157

0655 -- -- -- -- -- -- 1870 1.1518 .64514 .56012 .39047 .18026 .11616

0665 1.0351 .60624 .58568 .43423 .22449 .15163 1875 1.6260 .68089 .41875 .20953 .05644 -.04178

0689 .97556 .60399 .61912 .50568 .28384 .18943 1876 .94031 .50174 .53359 .34549 .11955 .07127

0690 .85567 .48421 .56589 .45939 .23160 .15818 1889 1.0991 .68402 .62236 .47257 .26539 .19640

0691 .98273 .56389 .57380 .43029 .22938 .15257 1903 .71057 .38202 .53762 .45047 .24193 .16850

0708 1.0779 .61016 .56604 .44213 .20307 .10620 1914 2.2343 1.2276 .54945 .56788 .56905 .57060

0738 1.0287 .58265 .56641 .42152 .21814 .14129 1920 1.0506 .58081 .55283 .41368 .22298 .16755

0776 .69867 .42102 .60260 .48993 .26280 .16362 1921 1.2439 .69067 .55526 .41578 .21888 .14815

0779 .69607 .40727 .58510 .51621 .26866 .15559 1937 1.2129 .66569 .54883 .43006 .24581 .14739

0784 .70924 .43021 .60658 .50237 .26837 .16769 1956 1.2962 .73470 .56682 .41981 .22219 .15417

0786 .55786 .34260 .61414 .45314 .21790 .12955 1970 3.7243 2.9829 .80092 .67088 .42529 .42369

0917 1.4278 .79056 .55370 .40865 .21743 .13807 2014 .92426 .62712 .67851 .51695 .25274 .13838

0923 3.5463 2.2045 .62163 .28732 -.14346 -.17197 2015 .96692 .66145 .68408 .54696 .31035 .20470

0926 1.0054 .58122 .57812 .43894 .22464 .14507 2019 2.7075 1.6361 .60427 .30474 .00742 -.00546

0950 .50840 .32403 .63736 .56394 .35266 .23907 2024 1.0545 .57578 .54600 .41448 .22618 .15661

0996 2.8512 1.8223 .63913 .35228 .01029 .01068 2042 .23375 .13018 .55691 .37174 .32785 .41015

1013 1.0074 .65289 .64809 .60110 .39147 .28267 2043 .35914 .20285 .56483 .45210 .27549 .20093

1017 .85971 .50063 .58233 .45387 .24460 .16806 2048 .89746 .54090 .60270 .48216 .24959 .16192

1042 2.0200 .99000 .49010 .31313 .28620 .36027 2050 .56447 .41071 .72761 .62131 .39053 .26800

1048 1.6278 1.0550 .64812 .70902 .57158 .37463 2051 .71070 .43702 .61492 .47060 .21080 .08968

1053 .82677 .48839 .59072 .44647 .21478 .13014 2053 .37500 .24433 .65156 .57299 .32469 .09550

1057 .78104 .45016 .57636 .43790 .22123 .13553 2073 1.0940 .65085 .59491 .49159 .30641 .22039

1063 2.7513 1.7945 .65224 .43835 .21564 .27396 2082 .58108 .34407 .59212 .49558 .28320 .19104

1068 1.0438 .57917 .55487 .40932 .20380 .13055 2086 1.0809 .60415 .55896 .42575 .22404 .15051

1080 .61648 .35371 .57376 .48540 .29689 .19908 2088 1.3179 .68135 .51701 .31392 .15801 .18846

1081 1.0582 .59656 .56376 .43789 .24123 .15056 2090 1.0741 .56080 .52209 .39543 .20278 .13656

1133 .37000 .22889 .61862 .30291 -.02913 .09466 2096 1.0405 .57597 .55355 .42372 .22907 .15334

1136 .86982 .59838 .68793 .54554 .29890 .19131 2128 1.0429 .59864 .57402 .40648 .18482 .11932

1138 2.5750 1.3510 .52466 .55070 .33506 .26400 2131 .95378 .53544 .56139 .43677 .22556 .14653

1139 1.3827 .76254 .55149 .32694 .09372 .04128 2142 3.5920 1.3060 .36359 .82542 .73201 .51455

Appendix 4–2.7. L-moments of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
212 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 0.82500 0.58864 0.71350 0.65266 0.53951 0.53651 3463 1.0403 0.65431 0.62894 0.51530 0.35613 0.31701

2206 1.2713 .74245 .58401 .42026 .20389 .14070 3476 .97903 .57434 .58664 .44434 .23460 .15661

2238 .57986 .38564 .66506 .51003 .22162 .07723 3485 2.1130 1.6557 .78356 .65694 .30081 -.06228

2240 .65804 .37064 .56325 .37140 .14437 .03942 3507 1.1559 .64724 .55995 .41628 .19018 .11094

2242 1.0250 .58643 .57215 .40015 .20529 .13749 3546 1.3253 .74774 .56421 .42173 .21926 .14621

2244 1.1186 .65267 .58345 .43708 .23338 .15304 3547 .96274 .53176 .55234 .38937 .17600 .11119

2247 1.1604 .69248 .59676 .41623 .20228 .14246 3579 1.0543 .55502 .52641 .31526 .08094 .05798

2309 1.3157 .69119 .52533 .40834 .24496 .17643 3642 1.1555 .66005 .57121 .43896 .23081 .15195

2312 1.2988 .66545 .51237 .36292 .15940 .07553 3646 .97089 .55240 .56896 .43439 .23350 .15690

2334 1.5050 .88961 .59110 .45316 .28639 .23022 3668 4.1383 2.2997 .55570 .68677 .74417 .64212

2336 .93695 .50613 .54018 .37015 .14984 .08586 3673 2.3844 1.6978 .71202 .51716 .25790 .32671

2354 .62533 .33695 .53884 .31795 .09890 .10927 3686 1.1002 .59388 .53978 .39978 .19875 .13971

2355 .95281 .60916 .63933 .49704 .26204 .14857 3691 1.0434 .59373 .56901 .43689 .23047 .15653

2357 .71116 .48235 .67826 .52971 .28323 .18323 3734 4.6500 3.3062 .71101 .51289 .26401 .22858

2360 .69096 .46563 .67389 .54164 .30982 .21459 3771 1.1429 .63312 .55397 .41264 .19686 .13063

2361 .80558 .55414 .68788 .63354 .46741 .39479 3789 .41019 .22529 .54924 .45088 .26870 .17120

2394 1.1261 .64343 .57137 .42316 .21183 .12924 3826 .90314 .47855 .52988 .40488 .22280 .14262

2404 1.0437 .59861 .57352 .43430 .22912 .15683 3831 1.0763 .61741 .57364 .41256 .18748 .11501

2415 1.2934 .72785 .56276 .42340 .22281 .14346 3841 1.0338 .58460 .56550 .41867 .18615 .10625

2462 1.1772 .65845 .55934 .41783 .21296 .13944 3871 .86126 .49898 .57937 .45008 .24153 .15849

2528 .90620 .48570 .53598 .33422 .07565 -.00060 3884 2.2788 1.4730 .64642 .42951 .17590 .25470

2617 .75146 .44764 .59569 .50352 .31061 .20753 3941 1.3354 .70310 .52652 .27443 .10014 .12388

2619 .75414 .42836 .56802 .42021 .18516 .08677 3963 -- -- -- -- -- --

2621 .78912 .46273 .58638 .47071 .25100 .15311 4040 .83725 .47540 .56781 .43863 .23659 .15914

2675 1.1266 .66007 .58589 .47534 .27171 .18529 4058 2.2567 1.6508 .73154 .73808 .64172 .48653

2676 1.1889 .69405 .58378 .45052 .22236 .16334 4098 .63894 .35975 .56304 .46540 .23325 .13723

2679 .84473 .54555 .64583 .53505 .29175 .17874 4100 .83069 .50515 .60811 .50264 .29678 .19822

2715 .94475 .53114 .56219 .42908 .23282 .15599 4137 1.0681 .57281 .53632 .41075 .21738 .15719

2744 .83800 .47776 .57012 .43672 .21763 .14096 4191 .95305 .57382 .60209 .47543 .23974 .14461

2758 .79344 .54719 .68964 .54997 .27617 .15318 4256 -- -- -- -- -- --

2794 .67714 .39238 .57947 .22136 -.06917 -.08617 4257 1.3210 .73172 .55389 .41924 .22532 .15058

2797 .35410 .22377 .63193 .50352 .28354 .19455 4258 1.3821 .79144 .57262 .46156 .25693 .15719

2811 .81403 .47566 .58432 .45676 .22549 .13939 4278 .99303 .57465 .57868 .43252 .21911 .14061

2813 .93000 .52933 .56918 .36164 .08296 -.05198 4299 .45473 .20817 .45778 .27675 .09087 .03916

2814 .52143 .40333 .77352 .62834 .28689 -.07910 4300 1.3025 .80665 .61929 .46918 .25033 .16445

2815 .80127 .47513 .59296 .52248 .28065 .14984 4305 1.2230 .76055 .62189 .45524 .23324 .15857

2818 .88685 .53174 .59958 .47265 .28191 .22563 4307 1.3794 .88637 .64256 .51246 .31258 .23373

2986 1.4312 .76291 .53304 .37313 .20973 .16289 4309 1.2837 .74405 .57962 .43128 .23117 .15842

3005 .97568 .53194 .54520 .40673 .21267 .14574 4311 1.3089 .75646 .57794 .42347 .21053 .13511

3033 .38339 .22573 .58877 .51265 .31691 .22520 4313 1.3932 .82335 .59099 .47388 .26498 .17148

3034 -- -- -- -- -- -- 4319 1.1729 .63557 .54188 .41794 .22498 .12915

3047 1.9244 1.4814 .76977 .71429 .56886 .48646 4329 1.2487 .72386 .57968 .44590 .23948 .15739

3103 1.0796 .69186 .64087 .54066 .25357 .11512 4331 -- -- -- -- -- --

3133 1.1239 .62421 .55538 .41931 .22763 .14842 4375 1.0230 .60258 .58902 .49552 .27978 .19213

3156 1.2198 .73808 .60507 .51042 .30688 .21106 4392 1.4685 .83684 .56988 .41637 .21348 .14053

3171 1.0476 .58776 .56107 .42031 .21354 .13521 4425 .62940 .36242 .57582 .47616 .25087 .16213

3189 .57482 .33083 .57554 .48405 .27196 .17659 4440 .88460 .51253 .57939 .44190 .24365 .16939

3260 .80929 .47501 .58695 .39550 .14518 .07185 4476 .98521 .52997 .53792 .41733 .22621 .14732

3267 .75700 .49631 .65562 .56382 .36083 .25731 4498 .27667 .12389 .44779 .14029 .03587 .01025

3270 .79887 .44959 .56279 .46265 .24656 .17167 4517 .98336 .56413 .57367 .43035 .22106 .13958

3272 .28556 .14472 .50681 .19879 .10200 .26213 4520 1.0225 .57722 .56453 .45726 .25463 .18314

3277 .21818 .13709 .62833 .51370 .26393 .21662 4525 3.0943 2.4119 .77947 .70259 .48746 .15420

3278 .71335 .42204 .59163 .46749 .23020 .13595 4563 1.4111 .86417 .61240 .29320 -.08853 -.12949

3280 .45664 .27795 .60869 .46871 .22304 .10890 4570 .83100 .48651 .58546 .47340 .25394 .16215

3281 .44111 .22002 .49878 .35404 .18003 .11633 4577 1.2695 .70618 .55627 .42568 .23499 .16366

3283 1.0081 .62395 .61892 .46408 .24480 .15910 4591 1.1150 .64264 .57638 .42762 .21820 .14245

3284 1.0517 .59378 .56459 .42851 .22019 .13829 4670 .81425 .47124 .57875 .45530 .24080 .15911

3285 1.1015 .61635 .55958 .42155 .19985 .12635 4671 .71671 .43887 .61235 .43100 .16836 .07366

3329 .94709 .57544 .60759 .47595 .25857 .17773 4679 1.0750 .62647 .58276 .47145 .26782 .18764

3335 1.3762 .75940 .55181 .43057 .23413 .16113 4696 .68571 .19905 .29028 -.06029 .34450 -.36842

3370 1.1453 .64043 .55920 .41770 .22077 .13887 4703 .81803 .48206 .58930 .51030 .29724 .18335

3410 .80672 .45241 .56080 .44227 .22289 .14260 4704 1.4719 .85911 .58367 .42922 .21250 .12760

3415 1.0770 .60919 .56565 .43306 .22936 .15255 4731 .82985 .53534 .64511 .52603 .31681 .22198

3430 1.1720 .74226 .63332 .48161 .25742 .17175 4792 1.0133 .55855 .55123 .41342 .19216 .12452

3431 1.3123 .86695 .66064 .53666 .32241 .22398 4819 1.3658 .69718 .51047 .34903 .16249 .09221

3441 1.0577 .59474 .56228 .44819 .28781 .20935 4852 1.7250 .84429 .48944 .07910 -.06557 .02876

3442 .62447 .36414 .58311 .45431 .21508 .10745 4866 1.0538 .58671 .55676 .41699 .21664 .14217

3446 .67172 .36508 .54350 .41785 .22688 .15611 4876 1.3737 .81586 .59392 .48876 .28336 .19690

3460 1.2346 .64563 .52296 .30795 .23564 .29042 4878 1.4956 .84445 .56464 .41697 .20615 .12165

3462 .75725 .40448 .53414 .44609 .29047 .22953 4880 .72602 .42394 .58392 .46856 .24864 .15571

Appendix 4–2.7. L-moments of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 213

4920 0.89935 0.53758 0.59774 0.47074 0.23347 0.14203 5957 1.0183 0.57759 0.56721 0.44702 0.25286 0.18039

4934 .46400 .35400 .76293 .76836 .60452 .49153 5958 .93907 .50850 .54149 .35565 .16257 .10845

4972 .94751 .53252 .56202 .43756 .23303 .14802 5973 .78897 .52264 .66243 .50302 .22472 .11502

4973 1.2981 .70794 .54536 .45077 .27121 .17072 5996 .96840 .54760 .56547 .42599 .21778 .14710

4974 .73877 .44616 .60392 .49743 .28523 .18636 6017 .79286 .50908 .64209 .49539 .24280 .12039

4975 1.2928 .68955 .53337 .38850 .19564 .13487 6024 1.4384 .81249 .56486 .40960 .21750 .16109

4978 .95693 .61371 .64133 .51981 .30124 .20659 6050 .88933 .42171 .47419 .37850 .16015 .07220

4979 3.1833 2.1500 .67539 .62341 .68295 .63643 6104 .71319 .43525 .61028 .51367 .29372 .18858

4982 .83753 .48394 .57782 .44678 .23012 .13916 6108 1.3189 .72156 .54711 .39083 .18873 .12210

5018 .98498 .54985 .55824 .41188 .21717 .15804 6136 .65116 .36812 .56533 .46488 .23502 .14050

5048 .67385 .40468 .60054 .51427 .28754 .19614 6166 .62232 .32769 .52656 .36444 .14106 .05696

5049 .66667 .37952 .56928 .51566 .30558 .23615 6176 1.2772 .73995 .57936 .46400 .25339 .12899

5056 -- -- -- -- -- -- 6177 1.3274 .74042 .55778 .42210 .22700 .15306

5057 .62647 .41490 .66228 .52034 .27074 .15895 6210 1.1570 .64460 .55714 .41457 .21599 .14221

5060 1.0483 .71938 .68624 .53881 .29008 .17640 6211 1.2663 .69713 .55054 .36540 .16314 .10340

5081 1.2221 .67082 .54889 .39060 .20222 .13278 6270 1.3733 .73585 .53582 .39872 .20710 .13845

5094 1.1188 .63271 .56553 .43298 .22725 .14771 6275 -- -- -- -- -- --

5113 .98875 .60776 .61468 .50287 .27754 .17953 6276 2.4562 1.6534 .67314 .48007 .22130 .16859

5114 -- -- -- -- -- -- 6335 1.1289 .61998 .54918 .39294 .19427 .12591

5123 .88818 .52673 .59304 .42607 .12266 -.06674 6434 .80500 .34236 .42530 .28743 .19800 .09850

5192 1.1351 .64133 .56498 .43132 .22438 .13880 6504 .71620 .42332 .59107 .48210 .25636 .16422

5193 1.0904 .62673 .57479 .43034 .21818 .14646 6558 .88350 .51871 .58711 .44231 .30327 .35004

5224 1.4812 .85849 .57959 .42747 .22475 .14433 6615 .84181 .49825 .59187 .51467 .30115 .21314

5228 1.0886 .63217 .58071 .40849 .19291 .13174 6660 1.0427 .56792 .54467 .40135 .19493 .09346

5235 .96765 .62397 .64483 .55522 .39177 .32372 6663 1.2908 .75561 .58540 .45011 .22834 .12724

5247 .75016 .42445 .56581 .43712 .20772 .11743 6734 .80486 .46307 .57534 .43060 .21539 .13641

5258 1.0732 .61468 .57273 .45387 .25253 .16150 6736 .73414 .43506 .59261 .49773 .27517 .17977

5303 .90962 .56758 .62398 .51316 .30003 .21259 6740 1.9330 .95744 .49532 .07677 -.17032 .02721

5312 .92104 .53570 .58162 .47170 .25174 .16993 6750 1.3423 .92679 .69043 .54993 .29709 .17115

5341 3.6243 2.6076 .71948 .61359 .22188 -.20581 6757 1.2054 .68744 .57028 .41664 .20980 .13534

5342 -- -- -- -- -- -- 6775 .73683 .43219 .58655 .43846 .21651 .14071

5348 1.3280 .70177 .52843 .35836 .14743 .07480 6776 .76321 .43658 .57203 .44861 .22393 .14284

5358 .79751 .46406 .58189 .45698 .24469 .15806 6788 1.1891 .64449 .54202 .36828 .16059 .08090

5398 1.2353 .68325 .55311 .41400 .22201 .14290 6792 .57161 .32469 .56803 .46967 .24583 .15532

5410 .72447 .43251 .59700 .48836 .26792 .17545 6794 4.9417 2.1763 .44040 .04809 -.36238 .18533

5411 .64791 .42092 .64965 .50549 .26774 .16622 6834 1.3405 .72800 .54306 .40009 .19709 .12721

5424 1.5053 .91260 .60624 .44580 .25178 .18410 6893 .49973 .28783 .57598 .52275 .30834 .20782

5429 1.0093 .60244 .59689 .45089 .23651 .16621 6935 .72176 .42464 .58834 .50618 .28313 .18253

5431 1.3145 .65945 .50166 .24198 -.04885 -.02734 6981 1.0607 .59302 .55909 .42719 .23917 .15942

5461 1.1862 .67188 .56639 .42463 .22378 .15268 7020 1.0190 .63981 .62786 .51553 .32082 .23455

5463 1.1977 .66034 .55135 .40741 .19323 .12741 7060 .83012 .47904 .57707 .46918 .24736 .15629

5471 .45222 .25528 .56450 .39717 .20954 .36126 7066 1.2788 .70943 .55477 .40591 .20321 .12728

5477 1.5591 1.2664 .81224 .82101 .71106 .65674 7074 .67060 .40696 .60686 .50784 .29331 .19903

5528 1.1102 .60918 .54870 .41136 .22072 .14363 7097 1.1317 .63037 .55702 .40448 .19293 .11122

5579 -- -- -- -- -- -- 7116 .74307 .43224 .58169 .44855 .23597 .15653

5580 1.9425 .95607 .49219 .23048 .27531 .37430 7140 1.2604 .79502 .63075 .50092 .27609 .18096

5589 .51542 .27458 .53273 .30103 .07941 .03718 7173 1.5767 .99367 .63022 .46398 .23156 .14124

5590 .63833 .36997 .57959 .43220 .21165 .13755 7174 1.5018 .92635 .61681 .45231 .23256 .15597

5591 .55952 .30907 .55239 .43453 .24015 .15713 7213 1.1022 .60593 .54973 .40116 .19823 .11820

5592 .50706 .30060 .59284 .49373 .29688 .20640 7243 .93376 .52725 .56466 .43560 .22487 .15204

5594 .47333 .27605 .58321 .50278 .29368 .19221 7262 .30333 .17742 .58491 .44062 .23872 .17630

5595 -- -- -- -- -- -- 7274 .90582 .49714 .54883 .44069 .24397 .15857

5596 .67967 .38442 .56559 .49429 .26351 .17390 7300 .91357 .51938 .56852 .42419 .22003 .13985

5600 .58019 .34580 .59602 .50649 .31707 .23766 7311 .95750 .53124 .55482 .38697 .13182 .13438

5618 2.1167 1.4736 .69619 .60275 .48606 .52980 7363 1.9075 1.3704 .71840 .56346 .25541 .16940

5650 1.3313 .72268 .54286 .56808 .26365 .05263 7422 1.0162 .60577 .59608 .46753 .25397 .17147

5656 .80869 .46542 .57553 .47633 .24561 .16275 7431 .63744 .37585 .58963 .48706 .26696 .17660

5658 .72465 .43679 .60276 .49508 .28522 .18761 7481 .52734 .32024 .60728 .52806 .31485 .21073

5661 1.0648 .69035 .64836 .57884 .35508 .24863 7497 1.1111 .62200 .55979 .44172 .24161 .17805

5666 .80381 .52333 .65107 .52134 .28187 .18725 7498 1.1367 .65415 .57545 .45385 .26204 .21881

5695 1.1110 .60848 .54767 .42528 .24125 .15871 7499 .96641 .54234 .56119 .44587 .23087 .15163

5742 .50500 .36767 .72805 .76745 .66099 .59459 7531 1.0388 .57991 .55826 .41747 .19884 .08734

5766 3.3114 2.0076 .60627 .43776 .09749 -.14635 7534 .99585 .59669 .59917 .49013 .30651 .24197

5770 .82059 .47834 .58293 .45721 .23039 .13845 7556 1.0383 .59749 .57545 .45632 .24255 .15766

5775 .62429 .33381 .53471 .20285 -.00000 .25678 7594 1.2473 .70354 .56406 .41537 .21389 .14264

5779 .96400 .48257 .50059 .31603 .16693 .01304 7596 1.0707 .60955 .56929 .34974 .10494 .06042

5840 .92619 .54709 .59069 .46131 .25286 .16573 7608 1.0632 .63156 .59402 .43102 .22050 .16114

5890 .54991 .35160 .63937 .49860 .26696 .17258 7622 .34929 .25610 .73321 .57670 .30711 .26705

5891 .56514 .29388 .52002 .36398 .16586 .10677 7700 1.2993 .72921 .56125 .40881 .21218 .13753

5897 1.1607 .64785 .55815 .42246 .20797 .14000 7706 .85173 .50137 .58866 .47536 .26505 .18276

Appendix 4–2.7. L-moments of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
214 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 1.0097 0.60460 0.59881 0.51459 0.33265 0.22120 8910 1.5478 1.1989 0.77459 0.67337 0.44525 0.29525

7745 1.3455 .77678 .57730 .43481 .24109 .15584 8911 1.0020 .58671 .58553 .42188 .20653 .13227

7922 .38371 .22096 .57583 .46245 .26956 .18826 8924 .46195 .23841 .51609 .38871 .18168 .09363

7936 1.4332 .79395 .55398 .41090 .21540 .14577 8929 2.1478 1.6961 .78971 .72655 .59057 .62501

7943 .65485 .41901 .63985 .48634 .24385 .14789 8942 1.3731 .75625 .55075 .41265 .20713 .12097

7944 .92455 .55737 .60286 .43377 .19936 .07272 8944 1.1996 .72148 .60145 .46268 .25835 .17519

7945 .91498 .60023 .65601 .50612 .27545 .18600 8996 1.1818 .68998 .58386 .42559 .21488 .14669

7947 1.3326 .78129 .58631 .47766 .28226 .19452 9014 2.3257 1.3090 .56286 .55591 .58931 .56966

7948 .91924 .56547 .61515 .47291 .24810 .16769 9037 .47676 .28629 .60049 .52188 .31487 .20696

7951 1.1791 .65040 .55162 .40710 .20832 .13596 9106 .45388 .30236 .66617 .60865 .41774 .32865

7953 .80814 .52622 .65115 .53758 .28384 .12189 9107 .54042 .32183 .59552 .42762 .19200 .16833

7981 .86379 .52742 .61059 .47307 .22579 .11376 9129 .64429 .41896 .65027 .51864 .25813 .13370

7990 1.0817 .72172 .66719 .52187 .26121 .12501 9163 .92255 .53376 .57857 .45074 .23242 .14015

7992 2.6850 1.3563 .50515 .43352 .33030 -.15483 9213 1.0656 .64656 .60674 .44515 .24268 .18400

7997 .70473 .41923 .59488 .47757 .27897 .19053 9214 4.5550 2.9223 .64157 .62861 .57910 .33478

7999 .47846 .29615 .61897 .48477 .24274 .07834 9222 1.0015 .59822 .59735 .47004 .25441 .14469

8022 .61674 .36461 .59120 .40068 .09474 .01150 9248 .64070 .36584 .57100 .44324 .21175 .14661

8023 .72048 .42235 .58621 .48441 .26225 .17278 9266 .79942 .42268 .52873 .34665 .10081 .03584

8047 .99049 .55668 .56203 .42184 .21538 .13867 9270 .62234 .36298 .58325 .50635 .28005 .17994

8060 .82653 .53934 .65254 .48414 .19553 .06751 9295 .37082 .23423 .63165 .48632 .23629 .12458

8062 1.0804 .71269 .65967 .47419 .19614 .07044 9304 -- -- -- -- -- --

8068 .48000 .29071 .60565 .49619 .27932 .12876 9307 .87450 .43879 .50176 .37938 .19631 .10401

8081 .98937 .61811 .62475 .51481 .29384 .20104 9328 .76647 .46926 .61224 .48914 .25077 .12639

8089 .76500 .42048 .54964 .33837 .15960 .16389 9329 1.0357 .66667 .64368 .43114 .02143 -.16286

8221 1.7512 .91232 .52095 .41202 .39049 .34351 9345 -- -- -- -- -- --

8252 .68757 .39549 .57520 .46039 .23701 .15425 9363 .96160 .61226 .63671 .47719 .24214 .15553

8265 1.3568 .80830 .59575 .45770 .24881 .16716 9364 1.0846 .71318 .65755 .51496 .28430 .19287

8289 .72000 .27971 .38849 .15861 .08209 .12576 9365 .61333 .35686 .58184 .55041 .35650 .21561

8305 .48660 .28095 .57738 .51122 .30406 .20261 9371 1.0780 .56712 .52606 .29490 .07650 .05468

8335 1.2790 .70995 .55507 .40324 .21748 .15104 9417 1.0366 .59355 .57259 .41229 .20403 .13694

8400 .65000 .36503 .56159 .46621 .28829 .19718 9419 .96716 .58003 .59972 .43255 .21635 .14698

8445 1.1742 .70334 .59901 .45393 .22944 .14520 9435 .73860 .38080 .51556 .41226 .28046 .23816

8446 1.0659 .59526 .55844 .41243 .20118 .12501 9491 1.1807 .66603 .56409 .41634 .20874 .13116

8451 .73810 .44444 .60215 .47805 .25079 .15183 9499 .78971 .45858 .58070 .45894 .21779 .12808

8531 1.0203 .55840 .54727 .39146 .19235 .12280 9522 -- -- -- -- -- --

8541 .92897 .54408 .58568 .47689 .26875 .15828 9527 .73209 .42411 .57931 .47633 .23242 .13331

8544 1.1677 .69460 .59483 .49084 .28650 .19919 9532 1.0083 .57661 .57185 .44537 .24616 .16888

8545 .50250 .18977 .37766 .08886 .26121 .26081 9544 -- -- -- -- -- --

8563 1.1295 .63352 .56091 .44934 .24442 .16718 9565 .86636 .51662 .59630 .47751 .24568 .14428

8566 .78120 .45406 .58124 .43580 .20916 .12199 9570 .86944 .48233 .55476 .44793 .22245 .14513

8583 .88619 .49627 .56001 .43714 .21259 .15695 9574 1.0545 .45818 .43448 .25397 .10053 .05952

8584 .95007 .53782 .56608 .42491 .20732 .13716 9588 .86683 .54189 .62513 .50146 .25789 .15171

8623 1.0141 .54729 .53967 .40536 .19719 .12505 9665 1.1534 .64377 .55813 .42456 .22765 .15556

8625 .97087 .54981 .56631 .42845 .22948 .15700 9715 1.0459 .58735 .56156 .42328 .22479 .14974

8630 .69193 .39335 .56848 .43733 .21138 .12605 9729 .87627 .53244 .60762 .44149 .21604 .13949

8631 .78019 .45272 .58027 .45631 .23907 .14614 9772 1.1981 .76263 .63654 .50043 .27253 .17627

8646 .97566 .55519 .56904 .41300 .19879 .12810 9814 .97636 .53909 .55214 .33074 .12439 .08799

8647 .72476 .42131 .58131 .47208 .24239 .14902 9815 1.1667 .67830 .58139 .45746 .25480 .18041

8677 .90563 .50007 .55218 .44516 .22499 .12983 9816 .86442 .54757 .63345 .50880 .25338 .11632

8696 2.3825 1.5907 .66767 .45914 .18186 .11495 9817 .90870 .50843 .55951 .44124 .23505 .15991

8743 1.2804 .72482 .56608 .42398 .22232 .14107 9829 .55122 .33090 .60030 .50927 .28592 .17871

8761 .65725 .38213 .58141 .47340 .23010 .13149 9830 .42371 .25971 .61294 .46650 .20689 .12010

8778 1.2202 .65552 .53722 .39030 .19416 .12786 9858 .71767 .41827 .58281 .45311 .23234 .13999

8845 1.0872 .65234 .60001 .47165 .24403 .15768 9893 .91033 .52488 .57658 .44897 .23717 .14750

8859 1.2374 .67213 .54317 .38887 .19626 .12912 9916 1.3120 .68342 .52090 .36420 .17204 .09856

8898 1.1376 .64160 .56401 .41929 .21443 .14111 9976 .82495 .49912 .60502 .48446 .25709 .16516

8908 1.3053 .74051 .56732 .35081 .16670 .21231

Appendix 4–2.7. L-moments of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)

Station

no.

Depth

mean

(inches)

Depth

L-scale

(inches)

Depth

L-CV

(dimensionless)

Depth

L-skew

(dimensionless)

Depth

L-kurtosis

(dimensionless)

Depth

Tau5

(dimensionless)
Appendix 4 215

Appendix 4–3.1. L-moments of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0015 5.4545 2.6000 0.47667 0.23543 -0.05478 -0.04079 1154 5.1894 2.9453 0.56756 0.46861 0.14497 0.07997

0016 5.4490 2.8663 .52602 .45651 .22359 .15121 1165 5.5949 2.9533 .52785 .47023 .25400 .18041

0050 6.3940 3.2767 .51246 .41352 .19481 .13135 1185 4.2162 2.2257 .52788 .52050 .27825 .19244

0054 4.2500 2.1969 .51692 .47095 .21997 .17198 1186 5.5556 2.8844 .51918 .41096 .15941 .10953

0120 6.9091 2.8542 .41310 .29392 .12218 -.03036 1188 5.3636 3.6909 .68814 .70772 .41708 .22167

0145 4.7549 2.8763 .60492 .56542 .21798 .06231 1245 5.8049 2.3488 .40462 .34795 .19943 .15668

0146 6.3077 2.8326 .44907 .30978 .20277 .20731 1246 3.9209 2.1209 .54094 .51992 .20519 .09916

0174 3.1719 1.6395 .51690 .58132 .29494 .18032 1267 4.9749 2.5613 .51484 .46659 .24492 .17189

0178 3.7600 1.8800 .50000 .52775 .34677 .31532 1304 5.5038 2.7962 .50805 .42340 .20000 .13834

0179 3.8046 1.7021 .44737 .43948 .24664 .16821 1325 5.9442 3.0476 .51269 .44084 .22693 .14919

0202 3.0401 1.5467 .50875 .57212 .26129 .13415 1429 5.2256 2.7840 .53277 .47421 .23456 .15614

0206 4.2641 2.2299 .52293 .48130 .21596 .15069 1431 6.4536 3.4081 .52810 .44146 .21976 .14434

0208 -- -- -- -- -- -- 1432 6.4881 3.4408 .53033 .45304 .23119 .14574

0211 5.1527 2.6917 .52238 .46666 .23627 .15972 1433 6.4229 3.2809 .51081 .42788 .21946 .14465

0244 7.8125 4.0575 .51935 .39811 .15953 .08972 1434 6.0909 3.1066 .51004 .43366 .23025 .15992

0248 3.8847 2.0402 .52520 .52022 .25154 .16739 1435 6.1451 3.2437 .52786 .44051 .20581 .12655

0262 5.6316 2.9055 .51592 .42813 .20158 .14066 1436 6.5813 3.3130 .50339 .42205 .21284 .12188

0271 6.2414 3.0542 .48934 .47581 .34684 .30564 1437 5.6786 3.2791 .57745 .61970 .36757 .11847

0380 5.8121 2.9471 .50706 .44011 .24288 .16856 1438 6.3490 3.2624 .51385 .43713 .22671 .14404

0394 8.3636 4.6727 .55870 .55901 .41310 .27562 1462 -- -- -- -- -- --

0408 4.5588 2.4661 .54096 .57463 .40117 .33195 1492 3.9310 2.0996 .53413 .52971 .25438 .16539

0427 4.2055 2.2496 .53493 .43932 .06085 -.03894 1500 6.2424 2.2803 .36529 .12657 .04308 .04731

0428 5.9305 3.2017 .53987 .45748 .21996 .15015 1528 4.2271 2.3060 .54552 .53162 .26435 .18087

0429 6.7647 3.7374 .55248 .47176 .25616 .19095 1541 5.1714 2.8501 .55112 .43027 .09176 .01793

0463 5.4173 2.8139 .51943 .40844 .14184 .08348 1569 5.7137 3.2450 .56793 .53097 .31503 .24941

0493 6.7895 2.6433 .38932 .33108 .23396 .14638 1632 -- -- -- -- -- --

0495 4.4209 2.5152 .56894 .57775 .32112 .20626 1641 5.1949 2.7080 .52127 .48219 .26971 .18073

0496 1.3333 .31339 .23504 .87709 .70364 .49273 1646 3.5350 1.8380 .51993 .53903 .25908 .16749

0498 1.3846 .37179 .26852 .93103 .82759 .68966 1663 4.9434 3.0073 .60834 .58216 .27869 .15380

0509 5.2427 2.8420 .54208 .47308 .21963 .15178 1671 4.8598 2.6193 .53897 .48278 .22651 .15828

0518 4.5406 2.4220 .53342 .47818 .20290 .13031 1680 6.3515 3.2235 .50752 .42045 .21162 .13874

0521 5.6000 2.6179 .46749 .37950 .20683 .13248 1694 4.4463 2.4448 .54984 .48823 .16936 .08091

0556 6.4359 3.3904 .52679 .48152 .31102 .25779 1696 5.6129 2.9504 .52564 .46627 .25007 .17413

0569 4.7611 2.5690 .53957 .48777 .22477 .14830 1697 5.4421 2.7256 .50084 .47099 .25410 .14594

0572 5.5009 2.8126 .51131 .46404 .26177 .18125 1698 4.0364 2.2010 .54529 .53579 .25056 .15670

0576 5.8312 3.1971 .54828 .47377 .24067 .18567 1720 3.6275 2.0664 .56964 .60792 .28067 .11134

0580 5.5733 2.8888 .51833 .43407 .19907 .13101 1761 4.7050 2.5808 .54851 .46737 .17278 .15267

0587 6.3865 3.1849 .49869 .43733 .25040 .16713 1773 5.2181 2.7427 .52562 .44438 .20222 .15241

0605 5.3796 2.5445 .47300 .37381 .18754 .15210 1810 4.6154 1.6492 .35733 .14552 .09049 .06554

0639 3.9043 2.0920 .53582 .53330 .25453 .16342 1823 4.1200 1.5567 .37783 .22652 .06150 .03689

0655 -- -- -- -- -- -- 1870 7.4252 3.7278 .50204 .41262 .21686 .13804

0665 6.0505 3.1325 .51773 .44798 .22868 .14265 1875 4.5500 1.5974 .35107 .23888 .03479 -.01110

0689 5.5348 3.0551 .55199 .50391 .27102 .18850 1876 7.7547 3.9478 .50908 .37582 .13291 .06241

0690 3.1067 1.6083 .51768 .58298 .27640 .14475 1889 5.4701 3.0263 .55324 .47009 .20811 .15468

0691 5.5260 2.7967 .50610 .43154 .21104 .13796 1903 3.0653 1.5354 .50090 .54885 .23682 .11914

0708 3.6129 1.9899 .55077 .58360 .28421 .15965 1914 6.0870 2.1897 .35974 .26973 .13435 .02832

0738 6.1993 3.1213 .50350 .41970 .21536 .14351 1920 5.4709 2.7641 .50523 .45526 .26673 .19872

0776 4.4703 2.3667 .52942 .50432 .26089 .18039 1921 5.4674 2.8145 .51479 .42663 .19962 .14607

0779 3.2857 1.7753 .54030 .60748 .31109 .17766 1937 6.7471 3.4275 .50800 .41644 .20150 .11865

0784 3.7887 1.9759 .52153 .51760 .24391 .16142 1956 5.1829 2.7590 .53232 .46852 .22563 .15469

0786 5.1461 2.6382 .51267 .43605 .19612 .12798 1970 5.5484 2.3634 .42597 .25613 .07139 .03195

0917 6.2371 3.2022 .51342 .44098 .23403 .15711 2014 4.9808 2.6663 .53531 .46734 .20269 .12566

0923 7.6562 4.0655 .53101 .39459 .12499 .03635 2015 5.2542 2.9170 .55518 .50536 .25670 .17757

0926 5.3890 2.8040 .52031 .44401 .21369 .14926 2019 4.7667 2.1299 .44683 .28941 .02188 -.02207

0950 2.7872 .82609 .29638 .34005 .24443 .06502 2024 5.4909 2.8866 .52571 .44473 .20654 .14119

0996 5.0625 1.8669 .36878 .26760 .14687 .05947 2042 2.2857 1.0659 .46635 .66495 .32755 .11387

1013 3.1393 1.6572 .52788 .60718 .31706 .19216 2043 2.8333 1.4196 .50104 .58128 .23737 .06921

1017 4.7147 2.5221 .53493 .48328 .22883 .16528 2048 4.3106 2.4175 .56082 .54596 .26172 .16033

1042 8.0741 3.3390 .41355 .36068 .12415 .05738 2050 4.5904 2.8046 .61097 .59806 .27286 .12509

1048 4.1852 1.7550 .41933 .45286 .31250 .25931 2051 4.8286 2.3851 .49395 .46668 .27254 .19207

1053 5.6335 2.8865 .51238 .43510 .21474 .14562 2053 3.3636 1.6727 .49730 .43478 .04891 -.00906

1057 5.6268 2.7272 .48469 .40633 .20717 .13696 2073 5.3573 2.6888 .50190 .44264 .23068 .15053

1063 5.8276 2.2759 .39053 .24868 .11080 .10853 2082 3.7950 1.9837 .52271 .53044 .27109 .18748

1068 5.3493 2.8839 .53912 .46963 .22651 .16185 2086 5.0297 2.6842 .53366 .46609 .21181 .14461

1080 3.1674 1.6170 .51052 .55644 .25281 .14407 2088 4.8254 2.6385 .54680 .47623 .19872 .14843

1081 6.4037 3.2146 .50199 .40853 .19857 .12632 2090 3.9221 2.0596 .52514 .50456 .22290 .14648

1133 7.1579 4.2690 .59641 .45351 .10455 -.03018 2096 5.2299 2.7286 .52173 .43554 .18945 .13464

1136 5.0011 2.8237 .56462 .52726 .26740 .17935 2128 6.3143 3.1957 .50611 .40928 .19481 .12081

1138 4.2609 1.3794 .32375 .25092 .17888 .04009 2131 4.2110 2.1944 .52112 .48078 .21247 .14414

1139 7.3654 4.2087 .57142 .48727 .27101 .22312 2142 7.5455 4.0779 .54045 .49045 .31529 .21667

Appendix 4–3.1. L-moments of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
216 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 8.9286 5.1190 0.57333 0.38032 0.08422 0.05073 3463 6.5741 3.6509 0.55535 0.46361 0.20852 0.10057

2206 5.4583 2.7878 .51074 .46261 .25360 .17050 3476 5.6278 2.8338 .50353 .42530 .21254 .14765

2238 4.8390 2.6196 .54135 .48119 .21470 .14395 3485 5.6400 2.1967 .38948 .24761 .15428 .19748

2240 4.2308 2.3447 .55419 .48956 .13002 .02404 3507 4.1293 2.2848 .55330 .53818 .24388 .14480

2242 5.7961 2.9876 .51544 .42974 .20691 .14135 3546 5.5397 2.9783 .53763 .45339 .20415 .14113

2244 5.3341 2.8919 .54216 .46893 .21637 .14996 3547 5.2251 2.7490 .52611 .45273 .21502 .15711

2247 5.2656 2.2413 .42565 .29347 .15315 .12333 3579 6.6517 3.6507 .54883 .48834 .27575 .19346

2309 6.1892 2.9930 .48358 .36688 .16346 .11066 3642 5.3696 2.7633 .51462 .41906 .17776 .12244

2312 4.4377 2.3195 .52269 .45587 .17338 .10644 3646 6.3727 3.1094 .48792 .40058 .20732 .13873

2334 6.2273 3.3154 .53240 .39713 .12792 .07429 3668 8.2692 3.3000 .39907 .28811 .14675 .06126

2336 4.8434 2.4347 .50268 .43758 .21328 .15709 3673 5.4211 2.6060 .48071 .36108 .14687 .09958

2354 4.9375 2.6250 .53165 .47143 .20160 .08234 3686 4.0831 2.1446 .52523 .47635 .17731 .10726

2355 6.5000 3.3581 .51664 .44756 .20670 .07656 3691 4.4426 2.3328 .52510 .47096 .20349 .13950

2357 5.5289 3.1155 .56349 .50985 .25097 .14784 3734 5.1389 2.3944 .46595 .32871 .11507 .11800

2360 4.8440 2.5981 .53635 .49364 .24761 .16788 3771 3.9061 2.1072 .53948 .52012 .21025 .11127

2361 3.8208 1.9113 .50024 .48973 .24291 .17055 3789 4.0265 2.3894 .59341 .61199 .29021 .13982

2394 5.9780 3.0324 .50725 .41132 .19410 .13204 3826 5.9458 2.8054 .47183 .34506 .11743 .05690

2404 5.4735 2.8574 .52204 .43864 .20392 .14207 3831 5.7061 2.9145 .51077 .44262 .23152 .15908

2415 6.2995 3.1980 .50766 .41277 .20422 .14181 3841 4.7337 2.3209 .49028 .43351 .22292 .16589

2462 5.6573 2.9201 .51616 .41534 .17354 .11017 3871 5.7776 2.8783 .49818 .42194 .21532 .14083

2528 6.7132 3.7484 .55837 .49644 .30164 .24813 3884 5.4348 1.8142 .33382 .15157 .14410 .10639

2617 6.3659 3.3506 .52633 .45666 .24001 .15352 3941 7.4810 3.9046 .52193 .35812 .12390 .09295

2619 5.5882 2.8680 .51321 .41657 .19264 .14584 3963 -- -- -- -- -- --

2621 4.8536 2.5638 .52824 .49007 .25963 .18300 4040 5.4720 2.6945 .49241 .43403 .23983 .16207

2675 4.9116 2.5664 .52251 .45846 .21247 .14245 4058 4.0667 1.6943 .41662 .30481 .10733 .02303

2676 3.5713 1.9031 .53288 .54893 .24809 .14372 4098 3.1874 1.5987 .50158 .53878 .24170 .13606

2679 4.3174 2.3238 .53824 .50692 .23513 .15642 4100 4.8521 2.4386 .50258 .43555 .20331 .13592

2715 5.5461 2.8085 .50639 .42888 .20937 .13530 4137 3.7373 1.9372 .51835 .50412 .21487 .13598

2744 4.7500 2.5333 .53332 .49381 .25196 .17611 4191 4.8867 2.6351 .53925 .49153 .24268 .16848

2758 6.1037 3.4695 .56843 .53618 .32186 .22432 4256 -- -- -- -- -- --

2794 5.9091 3.7636 .63692 .61997 .39614 .33816 4257 4.8707 2.6309 .54015 .47628 .21219 .14865

2797 4.2753 2.2462 .52540 .50296 .25224 .17278 4258 4.1176 2.2424 .54458 .50333 .18253 .08674

2811 4.3388 2.3396 .53922 .51898 .26069 .17786 4278 5.8269 2.9419 .50488 .44208 .23798 .15787

2813 4.0333 2.0402 .50584 .51638 .32175 .25954 4299 3.8741 1.9059 .49197 .46013 .20491 .12914

2814 4.0526 2.5848 .63781 .68592 .32060 -.00439 4300 5.7042 3.0749 .53906 .46817 .23230 .15901

2815 3.2580 1.6486 .50602 .53491 .23520 .13209 4305 5.5844 3.0474 .54571 .47780 .23446 .15973

2818 5.4785 2.9531 .53904 .46915 .21999 .13946 4307 5.6052 3.1538 .56266 .47449 .20289 .14976

2986 6.7081 3.4165 .50931 .37304 .14050 .09237 4309 5.5549 2.8710 .51684 .46116 .24165 .15517

3005 4.8641 2.5966 .53383 .47070 .21271 .14815 4311 5.7529 2.9650 .51540 .44369 .23029 .16017

3033 4.0600 1.8523 .45624 .42991 .23133 .15350 4313 5.8323 3.1041 .53223 .45658 .23077 .15541

3034 -- -- -- -- -- -- 4319 6.1574 2.8969 .47048 .38833 .22662 .15358

3047 5.6944 2.8024 .49213 .39804 .19750 .15304 4329 5.8998 3.0987 .52522 .45014 .22230 .14156

3103 3.6486 1.8709 .51276 .47122 .12973 .02370 4331 -- -- -- -- -- --

3133 5.8438 2.9942 .51238 .41707 .19766 .14375 4375 3.5474 1.8619 .52486 .53389 .23325 .13801

3156 5.2226 2.9800 .57061 .51793 .24506 .14874 4392 7.1646 3.6286 .50646 .39825 .19753 .13521

3171 5.9478 3.0697 .51610 .44041 .22788 .15602 4425 3.5087 1.8879 .53807 .57570 .28470 .16719

3189 4.0553 2.1650 .53387 .53202 .27148 .17860 4440 6.1104 3.0496 .49909 .43639 .23324 .14439

3260 5.2128 2.6514 .50863 .40962 .15807 .09790 4476 4.4087 2.3269 .52779 .48393 .22177 .15437

3267 5.8992 3.1458 .53327 .47698 .25416 .15017 4498 2.2857 .74725 .32692 .25735 .01404 .05147

3270 3.3337 1.7467 .52395 .56599 .27300 .16799 4517 5.7410 2.9164 .50799 .41799 .20442 .15116

3272 2.4000 1.0700 .44583 .59529 .32234 .23309 4520 3.6509 1.9397 .53129 .53351 .22971 .13170

3277 5.5000 3.6000 .65455 .62500 .30632 .17628 4525 6.7714 3.2840 .48498 .42161 .19812 .06646

3278 4.0182 2.0771 .51693 .52249 .29600 .22531 4563 6.0645 3.1355 .51702 .43366 .25196 .22529

3280 4.2807 2.1564 .50374 .50355 .30681 .23612 4570 4.5116 2.4424 .54136 .51232 .25557 .17420

3281 3.1250 1.6046 .51348 .59308 .32111 .19519 4577 5.3135 2.8794 .54190 .46686 .21406 .15370

3283 6.2380 3.3153 .53148 .44090 .21259 .14658 4591 6.6336 3.3457 .50437 .40869 .19893 .12482

3284 4.7474 2.5335 .53366 .47614 .21768 .15325 4670 4.2456 2.2352 .52647 .49300 .22871 .15641

3285 4.0011 2.1381 .53438 .50650 .20803 .12150 4671 4.3600 2.4382 .55921 .49727 .15358 .05813

3329 5.4195 2.8541 .52665 .45208 .21623 .14732 4679 4.4532 2.3935 .53749 .48457 .20254 .13406

3335 6.1336 3.1726 .51725 .40652 .17418 .11925 4696 3.9333 1.6190 .41162 .19638 -.03394 .08552

3370 6.0539 3.0488 .50362 .42720 .21629 .13581 4703 4.6866 2.6748 .57073 .54781 .27352 .16700

3410 4.3364 2.2690 .52325 .47995 .21835 .15308 4704 6.1945 3.3392 .53905 .44201 .19536 .12192

3415 4.5414 2.4144 .53165 .47331 .20035 .13590 4731 5.7466 3.3262 .57881 .49998 .21202 .11741

3430 5.3008 2.8521 .53805 .46817 .22047 .15273 4792 3.7703 1.9628 .52059 .50437 .21588 .14254

3431 5.4665 2.9163 .53349 .38996 .09526 .08788 4819 4.5656 2.3762 .52046 .43959 .15512 .09365

3441 5.1778 2.7646 .53394 .42614 .13419 .08240 4852 2.8235 1.6176 .57292 .79273 .57922 .42657

3442 5.5337 2.5793 .46611 .38216 .20006 .15121 4866 5.6081 2.9979 .53456 .45654 .21850 .15333

3446 4.5922 2.2879 .49822 .47420 .27180 .19709 4876 4.4774 2.3910 .53400 .48426 .21432 .14937

3460 4.8298 2.2831 .47271 .39800 .18436 .10767 4878 6.1562 3.1596 .51324 .43035 .21801 .14550

3462 5.4847 2.7399 .49956 .39548 .16228 .09280 4880 4.6603 2.4337 .52221 .47634 .23645 .16820

Appendix 4–3.1. L-moments of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 217

4920 4.4104 2.3637 0.53594 0.49818 0.23082 0.15580 5957 4.4271 2.3473 0.53021 0.49295 0.23817 0.17093

4934 3.4444 1.9167 .55645 .71014 .61698 .60870 5958 5.2026 2.4892 .47846 .40490 .19489 .09931

4972 4.9800 2.6213 .52636 .46062 .21761 .15715 5973 6.3440 3.3564 .52906 .48130 .32025 .27682

4973 6.1735 2.9411 .47641 .36388 .17095 .11616 5996 5.2485 2.7941 .53236 .45415 .20418 .14265

4974 4.6177 2.3180 .50199 .44689 .22294 .16932 6017 4.5364 2.2606 .49832 .42750 .17239 .09728

4975 4.3209 2.2774 .52708 .47528 .19658 .13005 6024 6.7162 3.7102 .55243 .47659 .25757 .18144

4978 4.3432 2.2902 .52731 .47967 .21276 .15733 6050 6.3478 2.6561 .41843 .20663 .09290 .09330

4979 9.5833 4.6957 .48998 .37717 .18450 .06250 6104 3.7082 1.8791 .50676 .52264 .28399 .20541

4982 5.4651 2.7558 .50426 .44558 .23181 .14927 6108 5.1126 2.7343 .53482 .45890 .20255 .14333

5018 5.7355 2.7901 .48646 .43479 .24081 .15641 6136 3.3458 1.7171 .51321 .54413 .25438 .15414

5048 3.8375 2.0698 .53937 .54785 .26697 .16405 6166 4.6792 2.3258 .49704 .45205 .22787 .14792

5049 2.8257 1.3593 .48106 .52724 .16987 .02304 6176 6.4040 3.4073 .53205 .43576 .19107 .11125

5056 6.2000 3.9000 .62903 .48718 .10256 .30769 6177 5.1429 2.7345 .53170 .46296 .21603 .15050

5057 5.3157 3.0594 .57553 .54024 .28663 .19008 6210 4.7749 2.5126 .52621 .46068 .20482 .14410

5060 6.0183 3.4258 .56923 .55469 .34926 .25740 6211 4.8564 2.7252 .56117 .51304 .23779 .15749

5081 6.8652 3.4246 .49884 .38874 .17969 .11498 6270 4.5701 2.4596 .53820 .48063 .20249 .13606

5094 4.5654 2.4108 .52806 .47219 .20582 .13568 6275 -- -- -- -- -- --

5113 4.7883 2.6051 .54406 .49672 .23646 .15946 6276 7.1034 3.0640 .43135 .29528 .13238 .03390

5114 -- -- -- -- -- -- 6335 6.0572 3.0448 .50267 .41675 .20602 .13020

5123 4.6471 2.4926 .53639 .58348 .44416 .35444 6434 6.6087 3.0949 .46830 .34866 .20909 .14895

5192 5.3452 2.7949 .52289 .44548 .20695 .14059 6504 3.9011 2.0862 .53478 .53150 .25261 .16161

5193 5.2677 2.8047 .53243 .46173 .21689 .14740 6558 6.0882 2.9652 .48704 .34919 .14094 .11756

5224 5.4627 2.7980 .51220 .40943 .17621 .13499 6615 3.3001 1.7240 .52239 .57035 .28079 .17310

5228 5.2821 2.9175 .55234 .48534 .22702 .16114 6660 6.2803 3.2698 .52064 .43307 .23744 .19321

5235 6.8857 3.6605 .53161 .39603 .12519 .05303 6663 3.6471 2.0014 .54878 .57386 .26882 .13798

5247 4.1467 2.1680 .52282 .50140 .24884 .17977 6734 5.2243 2.6835 .51366 .43498 .18925 .11111

5258 6.2050 3.1284 .50418 .42327 .21985 .14903 6736 3.9300 2.1119 .53738 .54326 .27883 .19285

5303 5.6075 2.7955 .49852 .44670 .23710 .14434 6740 8.3810 3.7667 .44943 .28259 .14732 .10687

5312 3.9087 2.1000 .53726 .53735 .26285 .17633 6750 5.4329 3.2093 .59071 .52320 .23410 .16989

5341 6.6000 3.4414 .52142 .47781 .26127 .09842 6757 5.5980 2.9682 .53023 .44878 .20837 .14016

5342 -- -- -- -- -- -- 6775 5.4977 2.9211 .53134 .47199 .24693 .17124

5348 4.7127 2.5095 .53249 .46337 .18747 .11784 6776 4.1680 2.2021 .52833 .50678 .24740 .17264

5358 4.8238 2.3401 .48512 .42708 .22729 .16822 6788 5.4208 2.4464 .45130 .34682 .16162 .09334

5398 6.2724 3.2215 .51360 .42706 .20995 .13240 6792 3.1115 1.5447 .49644 .55763 .28938 .19299

5410 4.0205 2.1314 .53013 .52508 .26637 .18367 6794 8.8333 4.2885 .48549 .38362 .24587 .15249

5411 5.0318 2.6641 .52947 .47431 .23694 .16734 6834 4.4294 2.3503 .53061 .47504 .19535 .12617

5424 6.4604 3.7915 .58688 .48819 .21851 .16877 6893 3.3267 1.7389 .52269 .57418 .29505 .18882

5429 5.1894 2.7292 .52592 .47188 .24340 .16592 6935 3.4034 1.7336 .50936 .53523 .25888 .17140

5431 10.667 4.4248 .41483 .17725 .13331 .08752 6981 5.5787 2.8536 .51151 .46323 .25284 .15384

5461 6.5848 3.3878 .51448 .41924 .20381 .13394 7020 7.1069 3.7565 .52857 .41617 .18165 .10407

5463 4.1447 2.2191 .53540 .50280 .21400 .12981 7060 3.8307 2.0423 .53313 .53994 .26678 .17246

5471 1.8214 .73942 .40595 .81120 .59868 .41800 7066 5.6549 2.9548 .52252 .43517 .20410 .14367

5477 5.2692 3.0508 .57898 .51160 .18651 .01701 7074 3.8261 1.9886 .51974 .51546 .24928 .16935

5528 5.6077 2.8236 .50353 .42539 .20123 .12324 7097 5.3511 2.6661 .49823 .40493 .17186 .10785

5579 -- -- -- -- -- -- 7116 5.1753 2.5984 .50208 .44431 .23487 .16620

5580 4.9310 2.0640 .41858 .37311 .18895 .03944 7140 5.1988 2.7661 .53206 .47491 .23349 .15241

5589 3.3704 1.6009 .47498 .45574 .17039 .09909 7173 5.6429 3.1316 .55497 .48598 .22819 .14221

5590 5.0567 2.8062 .55495 .54876 .32370 .21263 7174 5.6600 3.0886 .54569 .47297 .22882 .15846

5591 3.9198 1.8306 .46703 .46846 .27268 .18904 7213 5.8870 3.0944 .52563 .45276 .22074 .13595

5592 3.9690 1.8331 .46187 .46580 .27562 .18510 7243 4.4776 2.4650 .55052 .52620 .26310 .18148

5594 3.3441 1.5232 .45550 .49608 .28656 .17974 7262 3.0189 1.7247 .57131 .72151 .43090 .21332

5595 -- -- -- -- -- -- 7274 5.1040 2.5551 .50061 .40222 .17466 .14526

5596 2.6586 1.2845 .48314 .60102 .29781 .16046 7300 5.2179 2.6166 .50148 .43296 .21501 .14164

5600 4.6188 2.3410 .50684 .50702 .30101 .19694 7311 4.4688 2.1220 .47485 .32960 .07275 .10899

5618 5.8108 2.3799 .40956 .30235 .07647 .01617 7363 6.3571 3.0159 .47441 .35061 .12652 .03542

5650 4.7727 2.1017 .44036 .43254 .22505 .12445 7422 4.8137 2.6099 .54218 .49368 .23535 .15878

5656 3.2652 1.7299 .52980 .58837 .29298 .17221 7431 4.5720 2.4496 .53577 .51425 .27571 .19279

5658 5.7548 2.9470 .51210 .45510 .25337 .17957 7481 4.0974 2.1558 .52613 .51238 .25106 .16038

5661 3.7984 2.1563 .56768 .59465 .29001 .15528 7497 4.0167 2.1786 .54239 .52518 .23157 .14076

5666 5.5526 2.8997 .52222 .44166 .21556 .17521 7498 4.0965 2.2841 .55758 .55531 .26987 .16914

5695 5.4555 2.8748 .52696 .43745 .18877 .12710 7499 4.2357 2.2421 .52934 .48310 .19571 .11888

5742 4.9130 2.2332 .45455 .26321 .05537 .11137 7531 6.4121 3.4712 .54136 .44779 .20174 .12349

5766 5.2432 2.4625 .46964 .33972 .07898 -.00101 7534 5.2044 2.8429 .54624 .49321 .23965 .15005

5770 4.5704 2.4447 .53490 .49401 .23461 .15588 7556 4.5174 2.4027 .53188 .48124 .21451 .14610

5775 5.2143 2.9176 .55954 .44821 .11060 -.00479 7594 5.7734 2.9661 .51375 .43877 .22031 .14622

5779 6.1111 3.0513 .49930 .32751 .12979 .22218 7596 6.0621 3.3514 .55284 .51183 .30305 .21921

5840 6.6014 3.3545 .50815 .43644 .24139 .15925 7608 5.2622 2.7965 .53143 .44978 .19736 .13713

5890 4.8451 2.5799 .53247 .49649 .26341 .18498 7622 3.8261 2.1818 .57025 .61180 .32428 .15824

5891 4.4420 2.2249 .50088 .47127 .24224 .15067 7700 6.5062 3.3098 .50872 .41755 .21011 .14037

5897 3.9414 2.1008 .53302 .50894 .20904 .11862 7706 4.2287 2.2557 .53343 .50563 .23411 .15088

Appendix 4–3.1. L-moments of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
218 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 5.9746 3.0696 0.51378 0.41418 0.20496 0.17032 9037 4.7178 2.4534 0.52003 0.49003 0.26133 0.17705

7745 7.3208 3.8513 .52608 .42246 .21938 .16461 9106 4.7729 2.4827 .52016 .50907 .31472 .24133

7922 3.9569 2.1161 .53479 .52001 .22440 .11559 9107 3.3250 1.8994 .57124 .67096 .38475 .21740

7936 5.0292 2.6337 .52369 .45518 .21186 .14747 9129 4.8527 2.5993 .53564 .49780 .26916 .20003

7943 4.9783 2.5804 .51833 .47194 .24787 .17430 9163 5.0057 2.6661 .53262 .47668 .23010 .15160

7944 5.6444 3.0934 .54804 .45153 .19071 .15062 9213 5.4178 3.0752 .56761 .46964 .17307 .13378

7945 5.8048 3.1758 .54711 .47307 .23159 .16054 9214 5.7429 2.5815 .44952 .41477 .18964 -.00372

7947 4.6318 2.6052 .56247 .54266 .28996 .22091 8910 4.1739 1.4783 .35417 .28953 .15852 .07127

7948 5.0527 2.7266 .53962 .48763 .24266 .16786 8911 4.7629 2.5400 .53329 .48809 .24197 .16640

7951 6.1503 3.0586 .49731 .41638 .20990 .12727 8924 3.6310 1.7279 .47588 .49491 .28012 .19039

7953 5.9007 3.2072 .54353 .50369 .29655 .21258 8929 5.7586 3.1700 .55047 .45852 .18498 .09462

7981 5.3269 2.8984 .54411 .47128 .20713 .12360 8942 4.8802 2.6576 .54455 .47206 .18922 .11980

7990 5.3974 2.9035 .53794 .46225 .21735 .15857 8944 5.4902 2.9480 .53696 .46232 .22148 .15744

7992 5.4643 1.7976 .32898 .18560 .10762 .01848 8996 5.5662 2.8709 .51578 .46504 .24944 .15985

7997 4.5954 2.1461 .46701 .39440 .19055 .13431 9014 7.2400 2.9367 .40562 .28530 .23481 .20264

7999 4.4286 2.4429 .55161 .47122 .12332 .03555 9222 6.1132 3.2772 .53609 .42887 .17637 .11079

8022 5.2051 2.8258 .54290 .51554 .29940 .21865 9248 5.9930 3.3662 .56169 .48156 .20714 .09496

8023 4.1757 2.2495 .53870 .53899 .28908 .19793 9266 6.1047 3.0617 .50154 .43120 .22203 .13487

8047 4.7217 2.5204 .53378 .48539 .23699 .17487 9270 3.2283 1.6144 .50008 .54038 .26453 .17658

8060 5.5519 2.9977 .53993 .47264 .22866 .14887 9295 3.9828 2.2111 .55517 .52745 .19593 .10733

8062 7.0638 3.9130 .55395 .48514 .27511 .21406 9304 -- -- -- -- -- --

8068 4.2683 2.3305 .54600 .51125 .22987 .16859 9307 5.4144 2.8092 .51885 .45235 .23671 .17362

8081 5.0657 2.7607 .54497 .49488 .25077 .17950 9328 5.7475 3.3016 .57444 .54003 .31095 .22074

8089 5.1087 2.4700 .48350 .36570 .12646 .05880 9329 8.0625 4.6792 .58036 .45223 .19026 .06659

8221 8.6250 4.3822 .50809 .43688 .29857 .21568 9345 -- -- -- -- -- --

8252 4.3156 2.3413 .54252 .53697 .28865 .19900 9363 4.9528 2.6741 .53991 .48230 .22359 .14702

8265 6.7218 3.4943 .51985 .44637 .23224 .14285 9364 5.1420 2.8271 .54981 .50263 .25331 .16854

8289 5.3016 2.8582 .53912 .46029 .21430 .16644 9365 4.4500 2.1218 .47681 .40223 .19749 .16984

8305 3.3098 1.6502 .49858 .53031 .25997 .17074 9371 5.8721 3.0080 .51226 .40707 .16591 .09745

8335 6.9036 3.5652 .51643 .41998 .21124 .14244 9417 5.7221 2.9534 .51613 .43760 .21748 .14977

8400 3.5194 1.8919 .53757 .57764 .29709 .19286 9419 5.8845 3.1320 .53224 .45518 .22566 .15384

8445 6.2314 3.2319 .51865 .44707 .23411 .15120 9435 5.3765 3.1154 .57945 .57187 .36000 .27453

8446 4.5695 2.4287 .53150 .48124 .21642 .14188 9491 5.2785 2.7690 .52458 .44982 .20724 .13599

8451 5.2219 2.5965 .49723 .42656 .19912 .11225 9499 3.9883 2.1310 .53430 .52376 .24917 .16646

8531 6.0367 3.1704 .52518 .45534 .23569 .15471 9522 6.7895 2.8947 .42636 .34759 .14528 -.00386

8541 5.4918 2.3638 .43042 .38859 .23043 .11645 9527 3.5108 1.8390 .52380 .54806 .26526 .17032

8544 5.6878 3.0077 .52881 .45780 .23430 .16243 9532 4.6909 2.4856 .52987 .47680 .22752 .17048

8545 6.9130 3.7273 .53917 .40282 .16028 .11600 9544 -- -- -- -- -- --

8563 4.0829 2.1411 .52441 .48016 .19202 .13064 9565 4.3472 2.2524 .51812 .47573 .22324 .15979

8566 4.1830 2.1655 .51769 .48825 .23582 .16578 9570 3.3672 1.8028 .53539 .58987 .30382 .19186

8583 3.4594 1.8083 .52274 .53713 .23125 .13312 9574 2.5926 1.1425 .44066 .54294 .31147 .28035

8584 4.5641 2.4088 .52777 .47930 .22473 .15961 9588 4.6761 2.5792 .55157 .51152 .24115 .15697

8623 4.4684 2.3684 .53003 .48397 .22320 .15881 9665 5.2054 2.7448 .52729 .45728 .21517 .14662

8625 6.2164 3.0359 .48837 .41110 .21624 .14592 9715 5.1296 2.6952 .52542 .45249 .20452 .13445

8630 4.6911 2.4562 .52359 .47986 .23975 .16548 9729 5.6754 2.9603 .52160 .44411 .21435 .14094

8631 5.3962 2.7872 .51652 .46663 .25160 .16845 9772 5.4265 2.8357 .52257 .47188 .24760 .15969

8646 5.8877 2.9909 .50800 .42097 .20471 .13811 9814 6.7073 3.2902 .49055 .37258 .12966 .01567

8647 3.8259 2.0416 .53364 .53179 .24555 .15182 9815 5.7618 3.0108 .52254 .45194 .23471 .16657

8677 5.9188 2.6962 .45553 .35460 .19458 .13997 9816 5.0723 2.6873 .52981 .48044 .24768 .16448

8696 4.6000 1.9241 .41829 .25960 .06611 .05518 9817 4.2128 2.2175 .52637 .49152 .22402 .15518

8743 5.8476 3.0475 .52114 .43325 .20970 .14837 9829 4.0540 2.2011 .54293 .54729 .28581 .19185

8761 3.7263 1.9652 .52739 .54117 .27430 .18819 9830 3.8800 1.9524 .50319 .46221 .18431 .12271

8778 4.8693 2.6424 .54268 .47723 .20457 .13361 9858 5.2774 2.6624 .50448 .45013 .24198 .16463

8845 4.9601 2.7075 .54586 .48498 .22082 .15169 9893 5.0338 2.6594 .52830 .46706 .23162 .17470

8859 6.5746 3.3822 .51443 .41502 .20143 .14071 9916 5.3783 2.8324 .52663 .42520 .16606 .11380

8898 6.6844 3.2612 .48789 .39566 .19975 .12095 9976 4.7576 2.6578 .55864 .53504 .28410 .19798

8908 5.3478 2.4251 .45348 .36530 .20046 .13462

Appendix 4–3.1. L-moments of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 219

Appendix 4–3.2. L-moments of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0015 6.7000 3.1222 0.46600 0.16548 -0.11210 -0.06940 1154 6.2066 3.6407 0.58658 0.47135 0.16157 0.09832

0016 6.2826 3.4227 .54479 .46635 .23435 .15921 1165 6.2451 3.3736 .54020 .46958 .24698 .16728

0050 7.2150 3.8164 .52895 .41672 .18743 .12167 1185 4.4861 2.4536 .54693 .54290 .30406 .21041

0054 4.6207 2.4767 .53600 .48924 .24147 .18243 1186 6.3840 3.3768 .52894 .42976 .21629 .18460

0120 8.7586 4.4532 .50844 .45194 .25715 .10360 1188 6.5000 4.2333 .65128 .57480 .25759 .17060

0145 5.4869 3.5369 .64461 .61781 .30962 .16205 1245 7.5278 3.5087 .46610 .38409 .18124 .07719

0146 7.1020 3.4167 .48108 .36935 .25490 .23608 1246 4.6400 2.6325 .56734 .51797 .20760 .10485

0174 3.6673 2.0166 .54989 .58764 .30781 .19297 1267 5.7233 3.0918 .54021 .47945 .24991 .16991

0178 4.1667 2.1739 .52174 .54439 .35400 .27364 1304 6.3344 3.3528 .52929 .43349 .20383 .13726

0179 4.1786 1.9957 .47760 .46678 .26273 .17757 1325 6.7156 3.6082 .53729 .45783 .23122 .14562

0202 3.3993 1.8413 .54168 .58779 .27758 .13771 1429 5.8453 3.2451 .55517 .49359 .25324 .16854

0206 4.8590 2.6505 .54548 .48853 .22160 .14878 1431 7.2986 3.9773 .54493 .44943 .22130 .14120

0208 -- -- -- -- -- -- 1432 7.3699 4.0370 .54777 .45357 .21720 .12577

0211 5.9039 3.1981 .54169 .47359 .23805 .15340 1433 7.2690 3.8312 .52706 .43038 .20874 .12732

0244 8.4457 4.6516 .55077 .46401 .24357 .17524 1434 6.8290 3.5937 .52624 .44285 .23251 .15472

0248 4.3820 2.4040 .54859 .52868 .26169 .17193 1435 6.9612 3.8071 .54690 .45104 .21079 .12657

0262 6.3130 3.3648 .53300 .43804 .20513 .13496 1436 7.5761 3.9548 .52201 .43224 .21596 .12389

0271 8.2400 3.9900 .48422 .43446 .35545 .36344 1437 6.3333 3.9573 .62483 .69538 .50778 .32170

0380 6.5355 3.3969 .51976 .43691 .22435 .13967 1438 7.1455 3.8004 .53185 .44939 .23176 .14288

0394 8.3636 4.6727 .55870 .55901 .41310 .27562 1462 -- -- -- -- -- --

0408 5.2812 3.0575 .57893 .59103 .40603 .33979 1492 4.5506 2.5499 .56034 .53852 .26968 .17671

0427 5.1493 2.6531 .51524 .33631 .00194 .00669 1500 8.7500 3.8981 .44550 .36436 .25880 .20876

0428 6.9469 3.8806 .55861 .46373 .22513 .15249 1528 4.8709 2.7519 .56496 .52939 .26445 .17808

0429 8.5231 4.7856 .56149 .45857 .24349 .17461 1541 5.8485 3.2699 .55911 .41581 .08042 .01581

0463 6.4359 3.6340 .56464 .46153 .18611 .10223 1569 6.0362 3.4583 .57293 .52716 .30639 .23492

0493 7.5000 3.2190 .42919 .34569 .16650 .06091 1632 -- -- -- -- -- --

0495 4.9020 2.8757 .58664 .57658 .31369 .19606 1641 5.6476 3.0518 .54038 .49296 .26421 .15874

0496 1.3333 .31339 .23504 .87709 .70364 .49273 1646 4.0531 2.2241 .54876 .54692 .26836 .17012

0498 1.4167 .40152 .28342 .92453 .81132 .66038 1663 6.1250 3.8963 .63613 .57917 .28037 .16982

0509 6.1223 3.4420 .56221 .48007 .22751 .15389 1671 5.6256 3.1726 .56397 .49618 .23882 .16273

0518 5.2442 2.9076 .55444 .48090 .20442 .12667 1680 6.9698 3.6495 .52362 .43263 .21926 .14333

0521 7.3143 3.6824 .50345 .35820 .10237 .00313 1694 5.2545 3.0287 .57639 .50297 .20367 .12506

0556 6.6696 3.4639 .51936 .46206 .29840 .25415 1696 6.4291 3.5417 .55089 .48518 .26145 .17683

0569 5.4530 3.0560 .56042 .49673 .23676 .15673 1697 6.0889 3.3528 .55064 .53648 .30988 .17311

0572 6.1086 3.2135 .52606 .46282 .25099 .17004 1698 4.7966 2.7139 .56581 .52080 .23674 .14939

0576 6.5563 3.6602 .55828 .46966 .23928 .18219 1720 4.0591 2.3968 .59048 .60689 .28787 .13083

0580 6.4011 3.5099 .54833 .47117 .23813 .15835 1761 6.0976 3.3289 .54595 .41252 .15605 .16343

0587 7.0542 3.5995 .51027 .43993 .24502 .15623 1773 5.8579 3.1451 .53690 .44179 .19959 .14651

0605 5.9160 2.9982 .50680 .41793 .20564 .13639 1810 5.5000 2.5072 .45586 .39963 .34952 .35089

0639 4.4925 2.5249 .56202 .54076 .26428 .16661 1823 4.1200 1.5567 .37783 .22652 .06150 .03689

0655 -- -- -- -- -- -- 1870 8.3641 4.3805 .52372 .43268 .22475 .13466

0665 6.7321 3.6015 .53497 .45759 .23227 .14290 1875 4.5500 1.5974 .35107 .23888 .03479 -.01110

0689 6.2449 3.6227 .58011 .52832 .28849 .19170 1876 8.0385 4.1011 .51018 .35631 .10235 .04483

0690 3.5496 1.9345 .54499 .57864 .27612 .14814 1889 6.6976 3.7899 .56585 .44932 .18273 .12728

0691 6.2149 3.2813 .52797 .44686 .22128 .14558 1903 3.5714 1.8978 .53138 .54291 .23463 .12198

0708 4.0946 2.3033 .56252 .55941 .26507 .15893 1914 6.6818 2.6126 .39099 .31466 .16156 .02888

0738 7.0667 3.6405 .51517 .41330 .19750 .12263 1920 6.0774 3.1919 .52521 .46440 .26319 .18756

0776 5.0324 2.7926 .55493 .52378 .27966 .18856 1921 6.2310 3.3428 .53648 .44350 .21036 .14244

0779 3.8575 2.2321 .57865 .61439 .31630 .17217 1937 7.6015 3.9319 .51725 .41040 .19155 .11307

0784 4.3083 2.3658 .54912 .53043 .25784 .16775 1956 5.9209 3.2644 .55134 .47404 .22671 .14925

0786 5.9514 3.2850 .55198 .48063 .23407 .14903 1970 6.3793 2.7389 .42934 .21803 .02086 .01082

0917 6.9143 3.6521 .52820 .44912 .23697 .15644 2014 5.9924 3.3223 .55443 .46062 .19361 .11429

0923 10.222 4.9744 .48662 .27107 .02881 .01650 2015 6.0594 3.4720 .57301 .50609 .25471 .17200

0926 6.0406 3.2457 .53731 .45511 .22322 .15176 2019 5.1724 2.3054 .44571 .23955 -.02199 -.01426

0950 3.0000 .95362 .31787 .38381 .26477 .08593 2024 6.2204 3.3770 .54289 .45060 .20745 .13561

0996 5.8000 2.4621 .42449 .42497 .28697 .17702 2042 3.0000 1.5128 .50427 .51772 .10169 -.10067

1013 3.6429 2.0823 .57162 .63463 .36064 .23677 2043 3.6064 2.1175 .58715 .67009 .39900 .25878

1017 5.4224 3.0185 .55667 .49297 .23901 .16654 2048 5.0104 2.9330 .58538 .54989 .26718 .16213

1042 8.6154 3.8246 .44393 .39039 .11535 .01101 2050 4.9875 3.1267 .62692 .60897 .29780 .15819

1048 4.1852 1.7550 .41933 .45286 .31250 .25931 2051 5.3284 2.8394 .53289 .49833 .26132 .13445

1053 6.2755 3.3609 .53556 .46072 .23993 .16444 2053 4.4000 2.3111 .52525 .36779 -.04224 -.07933

1057 6.3797 3.2617 .51127 .43194 .22334 .14405 2073 5.9045 3.0927 .52378 .46179 .23894 .14604

1063 7.2308 3.5292 .48809 .39821 .17417 .07047 2082 4.3137 2.3736 .55025 .54219 .28155 .18820

1068 6.1034 3.4047 .55783 .47727 .23113 .15894 2086 5.7784 3.1945 .55284 .47105 .21482 .14229

1080 3.4354 1.8423 .53627 .58136 .29462 .18892 2088 6.0000 3.2168 .53613 .40468 .14559 .12243

1081 7.1870 3.7032 .51526 .41218 .19490 .11741 2090 4.5520 2.5197 .55354 .51845 .24577 .16784

1133 8.7647 5.0882 .58054 .41214 .11850 .06870 2096 6.0187 3.2829 .54545 .45606 .21050 .14299

1136 5.9088 3.4592 .58543 .52534 .26142 .16657 2128 7.1917 3.7550 .52213 .42188 .20930 .13639

1138 5.2857 1.7619 .33333 .32518 .12660 .05051 2131 4.8786 2.6559 .54441 .48382 .21441 .14245

1139 7.7723 4.4499 .57254 .47482 .25304 .20756 2142 8.9000 4.7158 .52986 .45573 .27433 .16801

Appendix 4–3.2. L-moments of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
220 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 8.9286 5.1190 0.57333 0.38032 0.08422 0.05073 3463 7.8776 4.1276 0.52396 0.37185 0.12905 0.06188

2206 6.2066 3.2668 .52634 .46103 .23857 .14653 3476 6.2168 3.2156 .51725 .42886 .20899 .13900

2238 5.6484 3.2583 .57687 .52524 .27730 .20050 3485 5.6400 2.1967 .38948 .24761 .15428 .19748

2240 4.2308 2.3447 .55419 .48956 .13002 .02404 3507 4.9346 2.8394 .57540 .52531 .23099 .13603

2242 6.6787 3.5710 .53469 .43779 .20591 .13026 3546 6.2991 3.4891 .55390 .45783 .20548 .13625

2244 6.1925 3.4573 .55830 .46762 .21224 .13930 3547 5.8584 3.2798 .55983 .49384 .25544 .18372

2247 5.6613 2.4223 .42786 .31217 .19142 .15602 3579 8.3291 4.6777 .56161 .48340 .27065 .18269

2309 7.1678 3.7205 .51905 .41000 .19102 .12187 3642 6.1971 3.2977 .53213 .42780 .18785 .12592

2312 5.2547 2.8037 .53357 .43307 .15441 .09364 3646 7.0296 3.5506 .50509 .41312 .21110 .13812

2334 6.4154 3.4346 .53537 .39278 .11724 .05922 3668 9.5417 4.2917 .44978 .32307 .11667 .02575

2336 5.4703 2.8816 .52677 .44538 .20045 .12908 3673 8.0968 4.4237 .54635 .52670 .37310 .26917

2354 5.2903 2.9785 .56301 .51171 .22845 .07762 3686 4.8341 2.6411 .54635 .47193 .18319 .11872

2355 7.6102 4.1251 .54205 .45137 .19377 .07205 3691 5.1537 2.8124 .54571 .47458 .20981 .14062

2357 6.2194 3.6211 .58223 .51586 .25331 .15058 3734 6.1515 3.0398 .49415 .38213 .17337 .11480

2360 5.5256 3.0883 .55891 .50790 .26371 .17840 3771 4.5955 2.5990 .56555 .52021 .21597 .11933

2361 4.2709 2.2666 .53070 .52171 .28350 .20645 3789 4.0796 2.4093 .59056 .60031 .27783 .13723

2394 6.7374 3.5304 .52400 .42177 .19990 .13183 3826 6.3707 3.1062 .48758 .37125 .14634 .08477

2404 6.0936 3.2687 .53641 .44511 .20590 .13348 3831 6.2683 3.3084 .52779 .44708 .22600 .15453

2415 7.0333 3.6413 .51773 .41208 .19877 .13346 3841 5.0000 2.5546 .51092 .45410 .22580 .14751

2462 6.2695 3.3201 .52957 .42424 .18516 .12122 3871 6.5736 3.4017 .51749 .43368 .21511 .12929

2528 7.1280 4.0138 .56310 .48943 .28776 .23049 3884 5.4348 1.8142 .33382 .15157 .14410 .10639

2617 6.9545 3.6647 .52695 .43821 .21732 .13670 3941 8.4054 4.5268 .53856 .37610 .13903 .10358

2619 6.2397 3.4117 .54677 .47269 .26219 .21142 3963 -- -- -- -- -- --

2621 5.3883 2.9382 .54530 .49240 .25106 .16387 4040 6.2017 3.1994 .51589 .44350 .23229 .14929

2675 5.6005 3.0719 .54850 .48015 .23123 .14834 4058 4.0667 1.6943 .41662 .30481 .10733 .02303

2676 4.2774 2.3931 .55949 .53411 .23231 .12902 4098 3.7453 2.0009 .53423 .53901 .24542 .13842

2679 4.9387 2.7924 .56542 .52320 .25323 .16650 4100 5.7035 2.9871 .52374 .44793 .21839 .14382

2715 6.1920 3.2549 .52567 .44420 .21690 .13067 4137 4.2805 2.3107 .53981 .49907 .20707 .12212

2744 5.3021 2.9230 .55129 .50126 .25716 .17390 4191 5.5500 3.1187 .56193 .50259 .24900 .16476

2758 7.3089 4.2168 .57694 .50656 .26351 .15218 4256 -- -- -- -- -- --

2794 5.9091 3.7636 .63692 .61997 .39614 .33816 4257 5.5918 3.1404 .56161 .48357 .21543 .14102

2797 4.7618 2.5915 .54423 .50862 .25456 .16695 4258 4.9951 2.8467 .56990 .50211 .19922 .11873

2811 4.9725 2.7988 .56286 .52751 .26882 .17739 4278 6.4105 3.3613 .52433 .46337 .25738 .17291

2813 4.0333 2.0402 .50584 .51638 .32175 .25954 4299 4.3566 2.2955 .52691 .49959 .24638 .15664

2814 5.2353 3.5956 .68680 .69325 .33947 .02548 4300 6.5673 3.6794 .56027 .47861 .23601 .15247

2815 3.9773 2.1444 .53916 .51665 .20922 .10301 4305 6.4553 3.6023 .55803 .46790 .21857 .14137

2818 6.1465 3.4062 .55417 .46253 .19847 .11153 4307 6.8906 4.0811 .59226 .49720 .23424 .16798

2986 8.0616 4.3128 .53497 .41041 .18844 .13294 4309 6.1790 3.3206 .53740 .47478 .24578 .15055

3005 5.5350 3.0513 .55127 .47397 .21605 .14797 4311 6.4303 3.4388 .53478 .45840 .23778 .15734

3033 4.5030 2.1942 .48729 .46342 .25113 .15349 4313 6.4800 3.4994 .54003 .45203 .22524 .15002

3034 -- -- -- -- -- -- 4319 6.5048 3.0984 .47632 .39153 .21680 .13144

3047 6.0571 3.0538 .50416 .43713 .25946 .21616 4329 6.5504 3.5670 .54455 .46444 .23089 .14464

3103 4.5882 2.3761 .51787 .38006 .02457 -.03852 4331 -- -- -- -- -- --

3133 6.6264 3.5066 .52919 .42599 .20058 .13745 4375 4.1951 2.3589 .56230 .55393 .26588 .16681

3156 5.9621 3.3863 .56797 .47916 .20631 .12728 4392 8.6752 4.5642 .52613 .41446 .20898 .13934

3171 6.6900 3.5436 .52969 .43953 .21656 .13846 4425 4.1069 2.3642 .57566 .59451 .31359 .19373

3189 4.6270 2.5640 .55414 .53563 .28108 .18981 4440 6.9696 3.5949 .51580 .44082 .22646 .13408

3260 5.4918 2.8352 .51626 .41313 .16152 .09938 4476 5.1648 2.8349 .54889 .48429 .22265 .14855

3267 6.6786 3.7761 .56540 .52389 .31945 .22662 4498 2.9231 1.2436 .42544 .45829 .28116 .26367

3270 3.8474 2.1326 .55428 .56961 .27970 .17099 4517 6.4517 3.4235 .53063 .44133 .22286 .15811

3272 2.7917 1.3786 .49384 .59646 .29706 .15016 4520 4.3268 2.4220 .55977 .53138 .23258 .13634

3277 5.5000 3.6000 .65455 .62500 .30632 .17628 4525 6.7714 3.2840 .48498 .42161 .19812 .06646

3278 4.4156 2.3727 .53735 .53911 .31840 .24278 4563 6.5000 3.7207 .57241 .56123 .42873 .42377

3280 4.6024 2.4022 .52194 .51663 .30649 .21368 4570 5.2295 2.9639 .56677 .52071 .26023 .17003

3281 3.5217 1.9758 .56104 .63514 .36601 .22564 4577 5.9828 3.3179 .55457 .46830 .21821 .15470

3283 7.2653 3.9944 .54979 .45220 .22292 .15010 4591 7.4523 3.8467 .51617 .41030 .19421 .11790

3284 5.5159 3.0223 .54793 .46848 .21169 .14530 4670 4.8539 2.6815 .55245 .50696 .24310 .16289

3285 4.6269 2.5549 .55218 .49612 .20113 .11914 4671 4.7278 2.6574 .56209 .48030 .14779 .07304

3329 6.2966 3.4185 .54292 .45196 .21165 .13613 4679 5.1950 2.8950 .55727 .48230 .20119 .12828

3335 6.9483 3.7229 .53581 .42558 .19692 .14103 4696 3.9333 1.6190 .41162 .19638 -.03394 .08552

3370 6.7106 3.5114 .52327 .43830 .21674 .13259 4703 5.3889 3.0749 .57059 .50951 .23553 .14548

3410 4.9602 2.7127 .54688 .49080 .22887 .15383 4704 7.3525 4.0152 .54610 .42530 .17711 .10508

3415 5.1536 2.8257 .54829 .47314 .20038 .13089 4731 6.5620 3.7860 .57695 .45876 .16128 .08069

3430 6.1951 3.4249 .55284 .46589 .22073 .15146 4792 4.4977 2.4801 .55141 .51167 .23182 .15765

3431 6.2911 3.5691 .56732 .43973 .15158 .11199 4819 5.5460 2.9701 .53554 .42613 .15416 .10180

3441 5.4318 2.8145 .51815 .39048 .11890 .09227 4852 2.8235 1.6176 .57292 .79273 .57922 .42657

3442 6.0853 2.9724 .48845 .41104 .22235 .16392 4866 6.3843 3.5008 .54835 .45636 .21500 .14511

3446 4.9556 2.5488 .51432 .48278 .27395 .19441 4876 5.1438 2.7903 .54246 .46839 .21058 .15590

3460 5.5909 2.6797 .47930 .36376 .15043 .09520 4878 6.9545 3.7008 .53214 .44186 .22119 .14228

3462 6.3553 3.3817 .53210 .42982 .18658 .10525 4880 5.2005 2.8136 .54102 .48465 .24113 .16546

Appendix 4–3.2. L-moments of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 221

4920 4.9443 2.7640 0.55902 0.51377 0.24880 0.16668 5957 4.9918 2.7575 0.55240 0.50481 0.25080 0.17659

4934 4.6250 2.8393 .61390 .58491 .18239 -.20755 5958 5.8950 3.0899 .52416 .46865 .25045 .14752

4972 5.6861 3.0605 .53824 .45451 .21161 .14767 5973 7.1186 3.8435 .53993 .47683 .29810 .24088

4973 6.8724 3.3896 .49322 .37661 .17039 .10205 5996 5.9783 3.2633 .54586 .45202 .20079 .13561

4974 5.3672 2.8340 .52802 .46148 .23146 .16530 6017 5.3857 2.7746 .51518 .41147 .14701 .07576

4975 5.1825 2.8401 .54802 .47062 .19695 .12651 6024 7.4164 4.1285 .55668 .46358 .23772 .16184

4978 5.1656 2.8580 .55327 .47120 .18636 .12012 6050 8.2500 2.7974 .33907 .03920 .08657 .05760

4979 11.091 5.6234 .50703 .40554 .25611 .17016 6104 4.1435 2.2154 .53467 .54266 .30336 .21204

4982 5.9751 3.1402 .52555 .46709 .24642 .15560 6108 5.9539 3.2880 .55225 .45812 .20020 .13662

5018 6.5334 3.3439 .51181 .46294 .26744 .17860 6136 3.8022 2.0664 .54347 .55821 .27631 .17258

5048 4.3817 2.4795 .56586 .55731 .28089 .17505 6166 5.5918 3.0065 .53766 .50136 .28399 .18953

5049 3.3495 1.7070 .50963 .49487 .13378 .00533 6176 7.2929 3.9592 .54289 .42941 .18177 .10822

5056 6.2000 3.9000 .62903 .48718 .10256 .30769 6177 5.8375 3.1860 .54577 .46284 .21606 .14769

5057 6.2287 3.7444 .60116 .54934 .28921 .18138 6210 5.4320 2.9322 .53979 .45753 .20217 .13592

5060 6.6198 3.8291 .57843 .54313 .32447 .22748 6211 5.4692 3.2054 .58608 .53143 .25550 .16302

5081 7.9067 4.0640 .51400 .40232 .19395 .12602 6270 5.3220 2.9449 .55335 .47099 .19502 .12888

5094 5.2221 2.8366 .54318 .46847 .20501 .13528 6275 -- -- -- -- -- --

5113 5.4779 3.0959 .56517 .50647 .24797 .16427 6276 7.8571 3.5926 .45724 .36230 .21813 .12114

5114 -- -- -- -- -- -- 6335 6.7429 3.4694 .51453 .41918 .20213 .12280

5123 5.3125 2.8042 .52784 .51772 .33560 .23815 6434 6.6087 3.0949 .46830 .34866 .20909 .14895

5192 5.9351 3.1941 .53818 .44979 .20482 .13222 6504 4.4131 2.4595 .55733 .53544 .25680 .16111

5193 5.9992 3.3006 .55018 .46894 .22355 .14986 6558 6.8750 3.8690 .56276 .49338 .27498 .19380

5224 6.2545 3.3709 .53896 .44291 .21252 .15690 6615 3.9561 2.2204 .56127 .57599 .28965 .17738

5228 5.8434 3.3512 .57351 .50437 .24801 .17689 6660 7.2195 3.9944 .55328 .45033 .21958 .15206

5235 7.6667 4.0909 .53360 .34970 .05827 .01599 6663 4.1770 2.4083 .57657 .57762 .27501 .14769

5247 4.8064 2.6286 .54691 .50700 .25462 .17843 6734 6.0000 3.2087 .53478 .44270 .19298 .11599

5258 6.8235 3.5243 .51650 .42397 .20917 .13166 6736 4.4868 2.5280 .56343 .55169 .28683 .19160

5303 6.2662 3.2837 .52404 .46899 .24917 .14775 6740 11.941 5.7868 .48461 .36722 .24578 .14759

5312 4.5138 2.5419 .56315 .54212 .27024 .18175 6750 6.1281 3.7908 .61860 .55427 .27278 .19056

5341 7.2759 4.1182 .56601 .54226 .32575 .15904 6757 6.3729 3.4726 .54490 .45180 .21130 .14208

5342 -- -- -- -- -- -- 6775 6.1821 3.3492 .54175 .46153 .22328 .13790

5348 5.4772 3.0107 .54969 .46314 .19306 .12330 6776 4.7495 2.6005 .54754 .50584 .24535 .16606

5358 5.5218 2.8444 .51513 .45217 .23918 .16397 6788 6.1099 2.8507 .46657 .35518 .16428 .10040

5398 7.0288 3.7239 .52981 .43586 .21265 .13110 6792 3.4937 1.8257 .52257 .55844 .28660 .18200

5410 4.5394 2.5208 .55531 .53772 .27950 .18884 6794 9.3793 4.5025 .48004 .38159 .22712 .10548

5411 5.8417 3.2045 .54856 .47666 .23516 .15902 6834 5.1434 2.8063 .54561 .46460 .18742 .11933

5424 7.9362 4.7937 .60403 .49329 .23601 .18255 6893 3.8122 2.1121 .55405 .57917 .29622 .18002

5429 5.9781 3.3270 .55652 .49257 .25244 .16384 6935 3.9453 2.1489 .54466 .55501 .28610 .18947

5431 10.667 4.4248 .41483 .17725 .13331 .08752 6981 6.0966 3.2340 .53046 .47497 .25123 .14379

5461 7.4175 3.9401 .53119 .43262 .21375 .13877 7020 8.3288 4.4111 .52962 .40024 .16913 .10063

5463 4.8464 2.6960 .55629 .49415 .20097 .11278 7060 4.2719 2.3344 .54644 .52563 .24668 .14975

5471 2.1481 1.0427 .48541 .81683 .58497 .34389 7066 6.3339 3.4074 .53796 .44398 .21081 .14475

5477 5.7200 3.6900 .64510 .65995 .43448 .30813 7074 4.3335 2.3521 .54278 .51999 .25208 .16381

5528 6.2232 3.2234 .51797 .43105 .20335 .12420 7097 6.3306 3.4441 .54404 .47436 .23875 .14522

5579 -- -- -- -- -- -- 7116 5.7663 3.0142 .52272 .46047 .24532 .16811

5580 4.9310 2.0640 .41858 .37311 .18895 .03944 7140 5.8659 3.2742 .55817 .49759 .25257 .16211

5589 3.7901 1.9529 .51526 .51416 .25045 .16434 7173 6.4537 3.7297 .57792 .50368 .24816 .15866

5590 5.6162 3.2331 .57568 .55160 .30865 .18410 7174 6.5032 3.6462 .56068 .47328 .22808 .15620

5591 4.3694 2.1663 .49578 .49600 .29313 .19670 7213 6.4475 3.5332 .54800 .47422 .23473 .13849

5592 4.3435 2.1371 .49203 .51019 .32201 .21993 7243 5.1103 2.8961 .56672 .52122 .25795 .17431

5594 3.8249 1.9542 .51091 .56846 .36433 .24399 7262 3.1048 1.7965 .57863 .71950 .42590 .20435

5595 -- -- -- -- -- -- 7274 5.4052 2.7710 .51265 .41808 .19428 .16247

5596 3.0759 1.6083 .52287 .60365 .30334 .16457 7300 5.6828 2.9496 .51903 .44526 .21823 .13671

5600 4.9867 2.6585 .53311 .53934 .33220 .21776 7311 4.4688 2.1220 .47485 .32960 .07275 .10899

5618 6.0000 2.4670 .41116 .27989 .04431 .00009 7363 6.3571 3.0159 .47441 .35061 .12652 .03542

5650 6.2000 2.5632 .41341 .23956 .09409 .10118 7422 5.4613 3.0437 .55731 .49469 .24095 .16495

5656 3.8728 2.1918 .56595 .58863 .29314 .16662 7431 5.1101 2.8498 .55768 .52686 .28495 .19176

5658 6.4021 3.4181 .53391 .47041 .25597 .17080 7481 4.6008 2.5449 .55314 .53491 .28060 .18729

5661 4.3833 2.6147 .59651 .60465 .31448 .19159 7497 4.8227 2.7413 .56841 .52285 .23707 .14931

5666 6.2222 3.3571 .53954 .45393 .21765 .14264 7498 4.8962 2.8156 .57505 .52753 .23335 .13690

5695 6.2068 3.3785 .54433 .44832 .20262 .13733 7499 4.8525 2.6760 .55148 .48918 .20458 .12383

5742 6.0476 3.0619 .50630 .33601 .09593 .09148 7531 7.7067 4.2442 .55072 .45334 .23006 .16008

5766 6.2647 3.0419 .48556 .36083 .12383 .06601 7534 5.6724 3.1889 .56218 .50828 .25934 .16562

5770 5.2255 2.8873 .55255 .49348 .23428 .15421 7556 5.1375 2.8234 .54958 .48290 .21659 .14272

5775 5.2143 2.9176 .55954 .44821 .11060 -.00479 7594 6.3980 3.4338 .53670 .46409 .24152 .15826

5779 8.9091 5.0216 .56365 .44897 .28870 .29527 7596 6.2701 3.5090 .55964 .51382 .29757 .20812

5840 7.2640 3.8299 .52725 .45647 .25305 .15991 7608 5.8098 3.1674 .54518 .45381 .20002 .13744

5890 5.4628 3.0009 .54934 .49859 .26099 .17713 7622 4.2727 2.6494 .62006 .67843 .42389 .27004

5891 5.1471 2.6501 .51487 .43878 .18396 .09753 7700 7.1714 3.7674 .52534 .43570 .22520 .14806

5897 4.6338 2.5826 .55734 .50598 .20862 .11754 7706 4.8816 2.7241 .55804 .51336 .24192 .15087

Appendix 4–3.2. L-moments of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
222 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 6.5221 3.4686 0.53181 0.44082 0.23763 0.19500 8910 4.6364 1.6450 0.35481 0.23842 0.11967 0.00166

7745 8.5591 4.6737 .54605 .42850 .20855 .14111 8911 5.2781 2.9474 .55841 .50934 .25905 .17397

7922 4.2360 2.3302 .55009 .53190 .24404 .13598 8924 3.8860 1.9204 .49417 .51179 .29592 .19798

7936 5.6932 3.0937 .54339 .47164 .23399 .16555 8929 7.1538 3.9785 .55613 .43271 .18743 .12847

7943 5.8113 3.1615 .54403 .48393 .25255 .16984 8942 5.5863 3.0808 .55150 .45496 .17986 .12032

7944 6.5238 3.8069 .58355 .49834 .24555 .19514 8944 6.0688 3.3733 .55585 .47646 .23352 .16458

7945 6.7265 3.7852 .56273 .47560 .23273 .15557 8996 6.2029 3.2890 .53022 .46692 .24443 .15312

7947 5.6963 3.3828 .59387 .55129 .30374 .23275 9014 8.4783 3.6482 .43030 .32178 .19161 .09831

7948 5.7391 3.1774 .55363 .48180 .23196 .15500 9037 5.3779 2.9509 .54870 .50585 .26607 .17302

7951 6.7221 3.4128 .50770 .41672 .20792 .13144 9106 5.4147 2.9807 .55048 .53577 .33557 .24996

7953 6.6541 3.7650 .56581 .51458 .28326 .17171 9107 3.3250 1.8994 .57124 .67096 .38475 .21740

7981 5.7920 3.1926 .55122 .46298 .19434 .11137 9129 5.6033 3.0351 .54167 .47082 .24022 .17991

7990 6.4825 3.7188 .57367 .50531 .26957 .19298 9163 5.5790 3.0441 .54563 .47571 .22720 .14664

7992 5.4643 1.7976 .32898 .18560 .10762 .01848 9213 6.9225 4.0845 .59003 .47513 .20456 .17415

7997 5.1360 2.4401 .47510 .39111 .18660 .11943 9214 6.6970 3.4072 .50877 .54243 .37455 .20050

7999 5.5263 3.0175 .54603 .38235 .02745 -.03001 9222 7.2716 3.8565 .53036 .39187 .15545 .10992

8022 5.8108 3.4247 .58936 .57614 .36237 .27350 9248 6.5474 3.7575 .57389 .48365 .20400 .09384

8023 4.7283 2.6666 .56397 .54906 .29463 .19328 9266 6.5542 3.4331 .52381 .44710 .21324 .10258

8047 5.3788 2.9689 .55197 .48984 .24249 .17539 9270 3.6667 1.9539 .53288 .55826 .28778 .19075

8060 6.7643 3.8154 .56405 .47566 .21974 .13018 9295 4.0696 2.2456 .55181 .51166 .18276 .10885

8062 7.6444 4.5303 .59263 .54725 .34597 .28004 9304 -- -- -- -- -- --

8068 4.7949 2.7989 .58373 .54659 .25300 .15764 9307 6.1564 3.2633 .53007 .44266 .21773 .14972

8081 5.7527 3.2604 .56676 .50891 .26425 .18336 9328 6.4973 3.8184 .58768 .53254 .28940 .18829

8089 5.9302 2.9424 .49617 .33033 .05991 .00855 9329 8.0625 4.6792 .58036 .45223 .19026 .06659

8221 10.714 5.2667 .49156 .38517 .25780 .18059 9345 -- -- -- -- -- --

8252 4.7902 2.6796 .55939 .53788 .28545 .18917 9363 5.8474 3.3049 .56520 .48941 .22615 .14415

8265 7.4594 3.9758 .53298 .44701 .22197 .12828 9364 5.9369 3.3714 .56788 .50509 .25538 .16800

8289 7.0000 4.2700 .61000 .52793 .25042 .13429 9365 5.0263 2.2966 .45691 .33550 .15850 .13803

8305 3.7334 1.9652 .52638 .54072 .27346 .17988 9371 6.8063 3.7466 .55046 .47388 .24841 .16993

8335 7.6639 4.0715 .53126 .43119 .22044 .15041 9417 6.3694 3.3741 .52974 .43967 .21365 .14351

8400 4.3264 2.5443 .58809 .60325 .33021 .21840 9419 6.8088 3.6818 .54074 .44313 .21010 .13758

8445 6.9759 3.7249 .53397 .45526 .24132 .15990 9435 5.6747 3.4002 .59919 .58828 .36169 .25269

8446 5.1178 2.8117 .54939 .48621 .22004 .14026 9491 5.9083 3.1851 .53908 .45415 .20999 .13473

8451 6.0567 3.2178 .53128 .46665 .24493 .15611 9499 4.5722 2.5454 .55671 .52394 .24806 .16006

8531 6.6267 3.5385 .53398 .44939 .22203 .14087 9522 8.3529 3.7794 .45246 .35486 .16954 .08291

8541 6.6937 3.2729 .48895 .43689 .23160 .10026 9527 4.0451 2.2215 .54918 .54539 .26355 .16696

8544 6.4618 3.5624 .55130 .47365 .24281 .16217 9532 5.2682 2.8782 .54634 .48209 .23367 .16906

8545 7.5000 3.8939 .51919 .34786 .12086 .11502 9544 -- -- -- -- -- --

8563 4.7375 2.5413 .53643 .46229 .18425 .13232 9565 4.9654 2.6725 .53822 .48327 .23437 .16469

8566 4.7050 2.5738 .54703 .50970 .24885 .16011 9570 3.9200 2.1917 .55911 .57518 .29102 .18439

8583 4.2289 2.3457 .55469 .52363 .21563 .11464 9574 3.6400 1.9000 .52198 .49657 .15457 .02140

8584 5.3500 2.9546 .55226 .49246 .24507 .17570 9588 5.4739 3.1760 .58022 .52492 .25242 .15972

8623 5.1860 2.8394 .54752 .47769 .21451 .14445 9665 5.9525 3.2701 .54935 .47254 .22857 .15099

8625 7.0329 3.5575 .50583 .42431 .22380 .15060 9715 5.7555 3.0941 .53759 .44924 .19956 .12889

8630 5.2363 2.8329 .54101 .48302 .23688 .15692 9729 6.4812 3.4826 .53735 .44869 .21805 .14337

8631 6.0596 3.2439 .53532 .47753 .26233 .18003 9772 6.0393 3.2958 .54571 .49191 .26428 .17176

8646 6.5376 3.4014 .52028 .42335 .20160 .13169 9814 7.7632 4.0946 .52744 .47780 .28178 .18822

8647 4.3255 2.4022 .55535 .53297 .24661 .14772 9815 6.7414 3.6422 .54027 .45070 .22381 .15161

8677 6.8852 3.1767 .46137 .34142 .16279 .09442 9816 5.5875 3.0239 .54119 .46302 .20683 .12101

8696 4.9655 2.3621 .47569 .40609 .22342 .17852 9817 4.7196 2.5657 .54363 .49266 .22510 .15200

8743 6.6530 3.5628 .53552 .43458 .20414 .13592 9829 4.5420 2.5590 .56343 .55184 .29059 .19193

8761 4.1255 2.2365 .54213 .53190 .26108 .17283 9830 4.4909 2.3336 .51963 .46706 .21522 .15798

8778 5.5474 3.0790 .55504 .47045 .20075 .13211 9858 5.7841 3.0374 .52512 .46715 .25213 .16834

8845 5.6957 3.2332 .56765 .49362 .22713 .14907 9893 5.7176 3.1354 .54838 .47730 .23949 .17415

8859 7.4069 3.8981 .52628 .42139 .20823 .14280 9916 6.1758 3.3445 .54155 .43104 .17753 .12075

8898 7.3492 3.7297 .50749 .42127 .22459 .14310 9976 5.5530 3.2057 .57730 .53106 .27632 .18316

8908 6.1628 3.0078 .48805 .41052 .22120 .11897

Appendix 4–3.2. L-moments of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 223

Appendix 4–3.3. L-moments of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0015 13.857 8.3333 0.60137 0.60686 0.63429 0.62286 1154 8.3535 5.1238 0.61337 0.47364 0.17159 0.10701

0016 7.7733 4.4415 .57138 .47762 .23825 .15434 1165 7.6225 4.3081 .56518 .47737 .24340 .15452

0050 8.5492 4.6422 .54300 .41728 .18387 .11508 1185 5.0950 2.9414 .57732 .55946 .30744 .19388

0054 5.9245 3.2612 .55047 .44376 .17006 .08606 1186 7.4957 4.3145 .57559 .50012 .28830 .22759

0120 14.455 8.6926 .60138 .51051 .25890 .10077 1188 6.5000 4.2333 .65128 .57480 .25759 .17060

0145 6.5810 4.3933 .66758 .62079 .32248 .18431 1245 13.667 7.5869 .55514 .49933 .32242 .23838

0146 8.9773 4.5714 .50921 .43828 .30915 .20048 1246 6.1588 3.7124 .60278 .51595 .20998 .10805

0174 4.7471 2.8725 .60510 .60555 .32561 .19391 1267 6.9773 3.9490 .56599 .48976 .25407 .16153

0178 5.9091 3.4113 .57729 .53604 .26109 .07093 1304 7.8930 4.3749 .55428 .44427 .20915 .13191

0179 4.8037 2.5573 .53236 .54658 .34456 .23539 1325 8.1968 4.6503 .56733 .46948 .22216 .12123

0202 4.3271 2.5765 .59542 .60309 .29967 .15148 1429 7.0223 4.0335 .57439 .48726 .23373 .14298

0206 6.1429 3.5111 .57157 .48084 .20602 .12281 1431 8.7622 5.0195 .57285 .47131 .23099 .13500

0208 -- -- -- -- -- -- 1432 8.5838 4.9277 .57407 .47735 .23409 .13421

0211 7.3653 4.1957 .56965 .48022 .23138 .13560 1433 8.7518 4.9056 .56052 .46163 .22649 .13019

0244 11.188 6.2419 .55794 .41975 .18271 .12798 1434 8.1143 4.4693 .55080 .45633 .22856 .13353

0248 5.4125 3.1859 .58862 .55266 .29119 .18977 1435 8.2050 4.6990 .57270 .46446 .21032 .11516

0262 7.7123 4.2641 .55290 .43922 .19823 .12256 1436 8.9691 4.9231 .54890 .44927 .21629 .11582

0271 10.909 4.7965 .43968 .35848 .32861 .29440 1437 8.9130 6.2648 .70288 .74763 .56764 .40890

0380 7.3259 3.9890 .54451 .45103 .21648 .11986 1438 8.6137 4.8593 .56414 .46999 .23310 .13258

0394 12.333 7.8611 .63739 .54064 .26552 .04947 1462 -- -- -- -- -- --

0408 8.2963 4.7721 .57521 .53256 .36466 .31122 1492 5.9090 3.5590 .60231 .54930 .27612 .16978

0427 7.5965 4.7425 .62430 .52361 .24572 .17932 1500 9.4444 4.7550 .50347 .49718 .40725 .35963

0428 8.8882 5.2070 .58583 .47105 .21968 .13575 1528 6.0446 3.6488 .60365 .55061 .28491 .18520

0429 10.638 6.3407 .59604 .49359 .25593 .14792 1541 6.8226 3.9569 .57997 .43018 .10360 .03805

0463 6.7130 3.8552 .57429 .46668 .18137 .08663 1569 7.6500 4.5483 .59455 .52283 .28940 .19957

0493 8.5882 3.9044 .45462 .30471 .06403 -.02405 1632 -- -- -- -- -- --

0495 5.5777 3.4343 .61572 .59497 .33058 .20693 1641 6.5514 3.7503 .57244 .51372 .26824 .14956

0496 1.3333 .31339 .23504 .87709 .70364 .49273 1646 5.0178 2.9481 .58753 .55595 .27415 .16290

0498 1.4167 .40152 .28342 .92453 .81132 .66038 1663 8.3571 5.3653 .64200 .52863 .22127 .11508

0509 7.8431 4.6517 .59309 .49537 .23914 .15140 1671 7.0095 4.1740 .59547 .50797 .24107 .14829

0518 6.4894 3.7803 .58253 .49098 .21663 .13243 1680 8.2258 4.5378 .55166 .45015 .21972 .13447

0521 8.4242 4.3390 .51506 .39418 .14700 .04749 1694 7.1370 4.2798 .59967 .48320 .18957 .11844

0556 7.2523 3.8154 .52610 .45542 .28224 .22824 1696 7.4472 4.2998 .57738 .49775 .25559 .15561

0569 6.6722 3.9453 .59131 .51364 .25188 .15998 1697 7.0235 3.9213 .55831 .50509 .25474 .12283

0572 7.3107 4.0847 .55873 .48343 .25231 .15502 1698 6.0874 3.6166 .59412 .51743 .23615 .14880

0576 9.1069 5.4568 .59920 .49368 .24168 .14336 1720 5.4306 3.5025 .64496 .62747 .32976 .18228

0580 7.6183 4.2487 .55769 .45510 .21146 .12791 1761 7.9099 4.3903 .55504 .40448 .17148 .15959

0587 8.6927 4.6952 .54013 .44597 .22184 .12191 1773 7.3248 4.1039 .56028 .44803 .20184 .13491

0605 7.3000 3.9567 .54202 .43166 .19179 .11039 1810 5.9583 2.9185 .48981 .45263 .36387 .30726

0639 5.5696 3.3619 .60363 .56288 .28600 .17239 1823 5.6957 2.1818 .38307 .21066 .07531 .04104

0655 -- -- -- -- -- -- 1870 9.2647 5.1075 .55129 .46326 .24068 .13363

0665 7.8696 4.4083 .56018 .47075 .23197 .13447 1875 6.7647 3.3309 .49239 .53201 .41627 .28867

0689 7.6897 4.7342 .61566 .54995 .29822 .18217 1876 9.1224 4.6803 .51305 .31507 .05745 .03934

0690 4.6066 2.7345 .59362 .57532 .26387 .12198 1889 10.668 6.3441 .59469 .44422 .18864 .13688

0691 7.2118 4.0088 .55586 .46814 .23203 .14638 1903 4.6476 2.6827 .57724 .53742 .22256 .10027

0708 5.4000 3.1748 .58792 .52735 .23795 .14777 1914 8.6500 4.2974 .49681 .57624 .41825 .31005

0738 8.4516 4.5573 .53922 .42532 .19169 .10434 1920 7.2829 4.1254 .56645 .49665 .26969 .17057

0776 6.0977 3.5467 .58164 .52278 .26455 .16043 1921 7.5644 4.1863 .55341 .43874 .19508 .11885

0779 4.5170 2.7181 .60176 .60270 .30557 .16928 1937 9.2165 5.0737 .55050 .43887 .20675 .12049

0784 5.4106 3.2174 .59464 .55952 .29364 .19131 1956 7.1140 4.0919 .57519 .48467 .23289 .14622

0786 7.4714 4.4259 .59238 .51057 .25476 .15299 1970 9.9583 5.8098 .58341 .55988 .42771 .34065

0917 8.1826 4.5340 .55410 .46187 .23198 .13944 2014 7.5344 4.5548 .60453 .51238 .24129 .14092

0923 10.593 4.9715 .46934 .23521 .03032 .04066 2015 7.7057 4.6775 .60702 .51919 .25541 .15631

0926 7.3535 4.1160 .55974 .45555 .20894 .12615 2019 7.8800 4.2500 .53934 .45616 .31704 .35701

0950 3.2444 1.1859 .36550 .48449 .37836 .22613 2024 7.5689 4.2822 .56576 .45478 .20169 .12227

0996 10.042 4.3569 .43388 .23863 -.05160 -.06203 2042 4.0833 2.1136 .51763 .39642 .00836 -.05854

1013 4.7306 2.9439 .62230 .63361 .35005 .20856 2043 4.8488 3.1192 .64328 .66250 .37596 .21021

1017 6.8796 4.0427 .58763 .50310 .24484 .15919 2048 6.2107 3.8299 .61666 .55753 .27607 .16650

1042 13.850 5.9447 .42922 .27490 .15363 .28529 2050 7.2571 5.0265 .69263 .63858 .32399 .14664

1048 4.1852 1.7550 .41933 .45286 .31250 .25931 2051 5.7692 3.2163 .55750 .51812 .26807 .12688

1053 7.8610 4.3775 .55687 .45793 .22541 .14748 2053 4.4000 2.3111 .52525 .36779 -.04224 -.07933

1057 7.6135 4.1111 .53997 .45297 .23345 .14649 2073 7.1632 4.1182 .57490 .51856 .28667 .17487

1063 10.636 5.1126 .48067 .26647 .05943 .04839 2082 5.1861 3.0331 .58485 .55522 .29090 .18498

1068 7.4621 4.3166 .57848 .48008 .23006 .14993 2086 7.1633 4.1198 .57513 .47153 .21096 .13095

1080 4.5026 2.6448 .58738 .57809 .28367 .16194 2088 8.4082 4.5799 .54470 .34501 .05653 .01217

1081 8.4898 4.5619 .53734 .41799 .18305 .10010 2090 5.5845 3.2604 .58384 .52842 .26259 .17745

1133 9.8750 5.8750 .59494 .42675 .14169 .07607 2096 7.3305 4.1429 .56516 .45625 .20533 .13141

1136 7.5682 4.6607 .61582 .53176 .26264 .15955 2128 9.0898 4.9651 .54623 .43233 .20982 .12895

1138 6.8947 2.8772 .41730 .42037 .17235 .03916 2131 6.2111 3.5610 .57332 .48107 .20480 .12166

1139 10.056 5.5993 .55681 .42751 .22223 .17961 2142 9.8421 5.2690 .53535 .49259 .30926 .17885

Appendix 4–3.3. L-moments of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
224 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 13.739 8.3123 0.60501 0.42137 0.14163 0.05583 3463 8.2500 4.4778 0.54277 0.39365 0.12722 0.03383

2206 7.3109 4.1069 .56175 .49717 .27037 .17106 3476 7.3752 4.0631 .55091 .45503 .21565 .12530

2238 6.8968 4.1585 .60296 .53303 .27742 .18112 3485 8.2727 3.4459 .41654 .26457 .16404 .04047

2240 5.8511 3.4399 .58792 .46178 .10288 .00965 3507 6.2616 3.7923 .60564 .52175 .22074 .11730

2242 8.4372 4.7291 .56050 .44106 .19412 .11006 3546 7.7402 4.4533 .57535 .46106 .20279 .12542

2244 7.7892 4.5148 .57961 .46665 .20576 .12552 3547 7.1436 4.2194 .59065 .50311 .24295 .14783

2247 6.9649 3.3421 .47985 .38533 .22676 .14308 3579 8.8182 5.1042 .57883 .49717 .26967 .16880

2309 8.6375 4.5998 .53254 .40629 .18339 .10997 3642 7.4950 4.1392 .55226 .43367 .18894 .11965

2312 6.7069 3.7516 .55936 .44503 .18229 .12225 3646 8.0033 4.2002 .52481 .42465 .20951 .12833

2334 7.7500 4.3048 .55546 .38020 .07890 .01703 3668 13.250 5.9026 .44548 .25338 .07232 .09535

2336 6.1062 3.3771 .55307 .45987 .19341 .10657 3673 12.720 7.1233 .56001 .43000 .17530 .05809

2354 7.3704 4.3960 .59644 .47847 .15275 .00200 3686 6.2781 3.6394 .57969 .48341 .20599 .13528

2355 9.0926 5.4504 .59943 .52588 .26918 .12858 3691 6.3969 3.6685 .57349 .48077 .21319 .13346

2357 7.5684 4.5612 .60266 .51328 .23923 .12655 3734 9.2857 5.3836 .57977 .43977 .16894 .06382

2360 6.9929 4.1030 .58673 .50288 .24137 .14329 3771 5.6756 3.3267 .58614 .50444 .20363 .11426

2361 5.5215 3.2028 .58006 .53334 .26912 .16216 3789 5.2286 3.3505 .64082 .62480 .32028 .17627

2394 8.0420 4.4093 .54828 .43958 .20830 .12758 3826 7.8302 4.0199 .51338 .38251 .16001 .11550

2404 7.4350 4.1776 .56189 .45089 .19897 .11830 3831 7.6194 4.3265 .56783 .48227 .24573 .15589

2415 8.4269 4.5799 .54348 .42855 .19987 .12150 3841 6.2434 3.5359 .56633 .50186 .25920 .16703

2462 7.4116 4.0993 .55309 .43726 .18795 .11141 3871 8.1707 4.6264 .56622 .48712 .25698 .15336

2528 8.4052 5.0711 .60334 .51938 .28188 .18256 3884 6.7143 2.4143 .35957 .15665 .14201 .06208

2617 8.2582 4.5034 .54533 .45454 .23948 .15972 3941 11.203 6.3460 .56645 .44591 .26270 .21976

2619 7.8227 4.4582 .56991 .46864 .23976 .17705 3963 -- -- -- -- -- --

2621 6.4554 3.7075 .57433 .50068 .24416 .14514 4040 7.0045 3.7953 .54184 .45893 .22881 .13448

2675 6.7466 3.8834 .57561 .49043 .23153 .13583 4058 6.3462 3.5708 .56267 .59306 .42093 .25671

2676 5.4703 3.2868 .60084 .54658 .24936 .13830 4098 4.8556 2.7976 .57616 .53774 .24776 .14101

2679 6.3805 3.8580 .60466 .53728 .26250 .15695 4100 6.8924 3.8243 .55485 .46774 .23418 .15580

2715 7.4321 4.0571 .54589 .43919 .19645 .11130 4137 5.7058 3.3184 .58158 .50677 .22085 .13094

2744 6.6885 3.9512 .59075 .51972 .26123 .15829 4191 6.8681 4.0514 .58989 .50484 .23605 .13598

2758 9.2818 5.5671 .59978 .50747 .26093 .16175 4256 -- -- -- -- -- --

2794 6.7273 3.9636 .58919 .51376 .30810 .29434 4257 7.0199 4.0602 .57838 .46780 .19487 .11723

2797 5.8156 3.3881 .58258 .53004 .26764 .16212 4258 6.7143 4.0192 .59860 .48616 .17599 .08505

2811 6.2099 3.6972 .59537 .53351 .26769 .16626 4278 7.5820 4.2082 .55503 .47872 .25228 .15523

2813 5.4444 3.0256 .55573 .50102 .26083 .16987 4299 4.8080 2.6430 .54970 .51783 .26535 .16844

2814 5.2353 3.5956 .68680 .69325 .33947 .02548 4300 8.2283 4.8213 .58593 .48553 .23459 .14353

2815 4.8988 2.7048 .55213 .47665 .17422 .08687 4305 8.2067 4.8628 .59254 .49005 .23235 .14067

2818 7.3207 4.2734 .58374 .49124 .23490 .14700 4307 9.2759 5.8647 .63225 .51659 .23233 .12938

2986 9.7116 5.4731 .56356 .43467 .19066 .11018 4309 7.3889 4.2206 .57121 .49948 .25876 .15278

3005 6.6332 3.7917 .57163 .47413 .21159 .13628 4311 7.8107 4.4382 .56822 .48422 .24902 .15019

3033 5.0511 2.6293 .52053 .50021 .27711 .15908 4313 8.5188 4.8634 .57090 .46361 .22168 .12950

3034 -- -- -- -- -- -- 4319 7.6224 3.9938 .52395 .44697 .23923 .12251

3047 6.4706 3.2496 .50220 .42046 .22792 .17707 4329 7.9134 4.5529 .57534 .48236 .23535 .13796

3103 5.0606 2.8106 .55539 .44635 .11277 .04434 4331 -- -- -- -- -- --

3133 7.9462 4.3594 .54862 .43122 .19515 .12163 4375 5.5687 3.3839 .60767 .56005 .27152 .16084

3156 7.6772 4.4560 .58043 .45547 .18387 .11364 4392 10.692 5.9516 .55663 .44072 .21048 .12315

3171 7.8966 4.3800 .55468 .45798 .22797 .14249 4425 5.2114 3.2217 .61820 .59960 .31469 .18551

3189 5.9768 3.6105 .60408 .55714 .29076 .18431 4440 8.4048 4.5827 .54525 .45621 .22342 .12485

3260 6.7160 3.8291 .57015 .48656 .24280 .16393 4476 6.5130 3.7229 .57160 .47184 .19938 .11681

3267 7.3271 4.2303 .57735 .52566 .32338 .23790 4498 5.2727 3.4909 .66207 .72222 .55295 .48177

3270 5.0387 2.9885 .59311 .55460 .25867 .14531 4517 7.8876 4.4238 .56085 .45575 .22051 .14305

3272 3.2609 1.7154 .52606 .56155 .21494 .02105 4520 5.8086 3.4241 .58948 .50763 .20865 .11598

3277 6.6000 4.4571 .67532 .61144 .26529 .07612 4525 9.7667 5.9713 .61139 .58856 .38008 .23425

3278 5.2338 3.0226 .57752 .57312 .34871 .24636 4563 7.7500 4.3056 .55556 .50996 .37923 .36227

3280 5.3228 2.9758 .55906 .55120 .33390 .21902 4570 6.5174 3.8571 .59182 .51521 .24803 .15495

3281 3.7778 2.2111 .58529 .65132 .37785 .21967 4577 7.1870 4.1857 .58240 .48724 .23135 .14882

3283 9.0575 5.1413 .56763 .44828 .20763 .12695 4591 8.8992 4.8481 .54478 .43332 .20407 .11771

3284 6.8648 3.9509 .57552 .47867 .21803 .13640 4670 6.1272 3.5769 .58377 .51310 .24884 .16040

3285 6.0927 3.5556 .58359 .49022 .19858 .11455 4671 6.9527 4.2268 .60794 .50297 .21684 .15797

3329 7.7248 4.4674 .57832 .48221 .23251 .13872 4679 6.7325 3.9487 .58650 .48427 .20495 .12642

3335 8.8558 4.9513 .55910 .42271 .16786 .08770 4696 4.1429 1.6264 .39257 .15541 -.01966 .11241

3370 7.8266 4.2771 .54648 .44516 .20858 .12048 4703 6.0579 3.5044 .57849 .49561 .22174 .14040

3410 6.2233 3.6072 .57963 .50156 .23741 .15258 4704 8.9093 4.9873 .55979 .41601 .15637 .08213

3415 6.5957 3.8154 .57847 .48263 .21458 .13723 4731 8.2419 4.8505 .58852 .43571 .12586 .03832

3430 8.0384 4.6390 .57711 .46666 .21671 .14014 4792 5.8184 3.4202 .58782 .51533 .23193 .14010

3431 9.4919 5.9452 .62634 .48811 .19032 .10043 4819 6.9514 3.9061 .56191 .43510 .16287 .09878

3441 6.5610 3.8012 .57937 .48363 .20542 .10960 4852 3.6250 2.3917 .65977 .84370 .68794 .58372

3442 7.3226 3.8898 .53120 .45580 .24675 .16395 4866 7.7035 4.3841 .56911 .46100 .21283 .13570

3446 5.8976 3.2972 .55908 .53137 .31318 .20722 4876 6.0949 3.4128 .55995 .46658 .21202 .15277

3460 6.7561 3.5537 .52599 .41920 .18549 .10301 4878 8.4680 4.7445 .56029 .45896 .22282 .13035

3462 7.2014 3.9323 .54604 .44751 .22095 .15124 4880 6.2859 3.6262 .57688 .51207 .26346 .16992

Appendix 4–3.3. L-moments of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 225

4920 5.9126 3.4644 0.58593 0.52148 0.25144 0.15515 5957 6.1106 3.5313 0.57791 0.49981 0.23147 0.14296

4934 7.8571 4.8571 .61818 .42353 .00000 -.09804 5958 7.4824 4.0719 .54419 .44240 .19252 .09148

4972 6.9996 3.9145 .55925 .45258 .20148 .12727 5973 9.0000 5.2417 .58241 .49071 .27318 .20176

4973 8.3363 4.3984 .52762 .40234 .17216 .08948 5996 7.4927 4.3102 .57525 .46830 .21280 .13371

4974 6.5912 3.6724 .55717 .47590 .24060 .16347 6017 6.4351 3.5937 .55845 .46078 .18891 .09224

4975 6.5364 3.7133 .56809 .45897 .18429 .11056 6024 8.8953 5.0622 .56909 .44973 .20970 .13413

4978 6.6224 3.8923 .58776 .47636 .17954 .09841 6050 8.2500 2.7974 .33907 .03920 .08657 .05760

4979 12.000 5.9857 .49881 .37947 .21136 .10926 6104 5.1226 2.9916 .58400 .57405 .32681 .21165

4982 7.0456 3.8542 .54704 .46346 .22831 .13850 6108 7.3127 4.2118 .57595 .46873 .21235 .14131

5018 7.7419 4.1591 .53722 .46499 .24150 .13456 6136 4.8476 2.8262 .58302 .55552 .27238 .16280

5048 5.4888 3.3206 .60498 .56819 .28885 .17042 6166 6.6087 3.6976 .55950 .51383 .29287 .18882

5049 3.8384 2.0000 .52105 .46113 .11025 .01406 6176 8.5667 4.8229 .56298 .44726 .21118 .14558

5056 6.2000 3.9000 .62903 .48718 .10256 .30769 6177 7.3248 4.2631 .58201 .48935 .23650 .15086

5057 7.5027 4.6813 .62395 .55411 .28940 .17332 6210 6.6795 3.7528 .56184 .45779 .19829 .12296

5060 7.6259 4.6364 .60798 .56867 .33975 .21961 6211 7.0704 4.4121 .62403 .54507 .26402 .15903

5081 9.4417 5.0589 .53580 .41714 .20215 .12950 6270 6.6580 3.8375 .57638 .47137 .20022 .13124

5094 6.6418 3.7910 .57078 .46908 .20032 .12118 6275 -- -- -- -- -- --

5113 7.1575 4.3472 .60736 .52820 .26182 .16039 6276 10.833 5.5543 .51271 .35498 .09777 -.04596

5114 -- -- -- -- -- -- 6335 8.0261 4.3121 .53726 .43232 .20410 .11626

5123 6.2667 3.4952 .55775 .47935 .22029 .11069 6434 10.158 5.2456 .51641 .34724 .11593 -.00130

5192 7.3115 4.1383 .56601 .46434 .21337 .13025 6504 5.6401 3.3409 .59235 .53609 .25490 .14980

5193 7.5320 4.3608 .57897 .47851 .22249 .13506 6558 8.0000 4.3839 .54799 .41093 .18261 .14588

5224 8.1207 4.6809 .57642 .46554 .22449 .15562 6615 5.1636 3.1507 .61017 .58930 .30992 .19375

5228 6.3441 3.7202 .58641 .51019 .24801 .16439 6660 8.8214 5.2405 .59407 .49082 .24552 .14940

5235 9.4000 4.9655 .52825 .34127 .10340 .08901 6663 5.3398 3.3990 .63654 .61564 .31374 .16617

5247 6.0442 3.5132 .58125 .51430 .25150 .15820 6734 7.5000 4.1906 .55875 .44720 .19054 .10676

5258 8.2763 4.5238 .54660 .43517 .19723 .10779 6736 5.5278 3.3025 .59744 .56122 .29569 .18935

5303 7.7035 4.3172 .56042 .49064 .24936 .13289 6740 14.867 9.3333 .62780 .62716 .51962 .42306

5312 5.8187 3.4939 .60046 .54294 .26220 .15769 6750 8.5592 5.3722 .62766 .51014 .22376 .14005

5341 8.5185 4.7236 .55452 .45008 .19747 .06931 6757 7.7885 4.4245 .56807 .45856 .20974 .13196

5342 -- -- -- -- -- -- 6775 7.5993 4.3724 .57537 .47929 .22095 .11589

5348 6.9774 3.9952 .57259 .46301 .19868 .12899 6776 5.8460 3.3619 .57508 .50745 .24362 .15594

5358 6.5962 3.6140 .54790 .47846 .25700 .16951 6788 7.6590 3.8384 .50116 .39173 .17868 .08808

5398 8.3468 4.6387 .55574 .45182 .21276 .11887 6792 4.2158 2.3862 .56602 .57632 .30586 .19025

5410 5.5608 3.2971 .59292 .55511 .29329 .18778 6794 12.840 6.0433 .47066 .36296 .17625 .02881

5411 7.2618 4.1906 .57708 .48825 .23899 .14986 6834 6.3096 3.6049 .57133 .47055 .19277 .11548

5424 10.481 6.5139 .62148 .49574 .24393 .17791 6893 4.6333 2.7580 .59527 .59284 .31133 .18826

5429 7.2325 4.2926 .59351 .51997 .26933 .16615 6935 4.9645 2.8561 .57530 .54268 .27069 .16858

5431 13.312 5.8375 .43850 .18997 .02840 -.03965 6981 7.3177 4.1658 .56927 .50420 .25879 .13207

5461 8.9519 5.0151 .56023 .45581 .22634 .14088 7020 11.039 5.7970 .52512 .36661 .14629 .10068

5463 6.0243 3.5018 .58128 .48929 .19458 .10174 7060 5.5553 3.2536 .58567 .52942 .25261 .15516

5471 3.4400 1.9333 .56202 .57886 .15619 -.12842 7066 7.8601 4.3984 .55958 .44542 .20136 .12545

5477 6.6250 4.2409 .64014 .60475 .34577 .21013 7074 5.3134 3.0773 .57915 .53438 .26472 .16382

5528 7.3404 3.9719 .54110 .43794 .19995 .11918 7097 7.7568 4.5790 .59033 .52814 .29668 .19446

5579 -- -- -- -- -- -- 7116 6.7237 3.7085 .55156 .47648 .23820 .13766

5580 6.4074 3.0057 .46910 .33846 .07763 -.03530 7140 7.1817 4.2076 .58587 .50659 .25344 .15455

5589 4.4942 2.4277 .54018 .49893 .21531 .10806 7173 8.0400 4.8741 .60624 .51865 .25992 .15799

5590 6.9529 4.1360 .59486 .53582 .27434 .14296 7174 8.3508 4.8803 .58441 .47648 .22666 .14761

5591 5.1601 2.8226 .54701 .54874 .33621 .22110 7213 7.7126 4.5018 .58370 .50088 .24979 .14265

5592 5.5211 3.0874 .55920 .56660 .35980 .23726 7243 6.4807 3.8619 .59590 .52171 .25320 .15870

5594 4.3041 2.4462 .56833 .64352 .44855 .31273 7262 3.5196 2.1494 .61069 .71680 .41659 .18356

5595 -- -- -- -- -- -- 7274 6.3712 3.4795 .54613 .44502 .20476 .14810

5596 4.0835 2.3869 .58453 .60550 .30769 .16430 7300 6.6798 3.6472 .54600 .46003 .21999 .12731

5600 5.9528 3.4600 .58124 .58821 .37607 .24283 7311 5.3667 2.8563 .53223 .43932 .21571 .22400

5618 7.9394 3.3731 .42486 .28094 .12411 .15294 7363 6.8889 3.5242 .51158 .40249 .14737 .01931

5650 7.1053 2.8772 .40494 .19225 .09344 .09684 7422 6.8389 4.0145 .58701 .50263 .24157 .15179

5656 5.2131 3.1374 .60183 .55787 .25546 .13675 7431 5.9573 3.4473 .57867 .52665 .27514 .17273

5658 7.6450 4.3835 .57338 .50478 .27398 .16913 7481 5.5711 3.2989 .59213 .56117 .30736 .19995

5661 5.5747 3.5189 .63124 .60068 .31166 .18843 7497 6.3414 3.8208 .60252 .52379 .24057 .14880

5666 6.7143 3.7025 .55144 .44976 .19266 .09626 7498 6.0237 3.5766 .59375 .51046 .21675 .12947

5695 7.3778 4.2104 .57069 .46416 .21153 .13695 7499 6.2286 3.6537 .58661 .49764 .21216 .12373

5742 7.6316 3.9708 .52031 .35164 .11656 .04934 7531 9.0863 5.0592 .55679 .42156 .17780 .11322

5766 8.5667 4.3138 .50356 .30311 .04830 .03595 7534 6.9938 3.9758 .56848 .46708 .20504 .12309

5770 6.4132 3.7095 .57841 .49907 .23934 .15444 7556 6.3782 3.6805 .57705 .48234 .20582 .12157

5775 6.3077 3.6538 .57927 .44689 .10335 -.04508 7594 7.4298 4.2194 .56791 .49234 .25847 .15913

5779 12.000 7.2105 .60088 .47388 .29100 .28812 7596 6.9940 4.0967 .58575 .53418 .30815 .20985

5840 9.0817 5.1790 .57026 .48884 .26244 .15279 7608 7.0821 4.0391 .57033 .46269 .20293 .12995

5890 6.9027 3.9976 .57914 .50343 .25554 .16237 7622 4.2727 2.6494 .62006 .67843 .42389 .27004

5891 6.1321 3.3855 .55209 .46633 .20328 .11236 7700 8.7572 4.8309 .55164 .44362 .21306 .12645

5897 6.0254 3.5147 .58331 .48510 .18102 .08912 7706 6.2809 3.7153 .59152 .51752 .24429 .14783

Appendix 4–3.3. L-moments of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
226 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 8.1667 4.5833 0.56122 0.43529 0.18363 0.10423 8910 6.1000 2.6684 0.43745 0.42538 0.28027 0.17496

7745 10.562 5.8733 .55608 .41367 .18262 .11226 8911 6.1869 3.6167 .58457 .52302 .26844 .17100

7922 5.1003 3.0145 .59104 .55773 .26989 .14482 8924 4.6788 2.5793 .55126 .56580 .34098 .21930

7936 6.9025 3.9208 .56803 .47892 .23293 .15210 8929 10.455 6.5758 .62899 .51547 .23825 .09409

7943 7.1734 4.1685 .58110 .50740 .26137 .15871 8942 7.0432 4.1224 .58530 .47784 .20343 .12572

7944 8.1842 5.0007 .61102 .50741 .23907 .15554 8944 7.4091 4.3162 .58255 .49179 .24544 .16221

7945 8.6236 5.0900 .59024 .48067 .22388 .13444 8996 7.2863 4.0780 .55968 .48613 .25188 .15262

7947 6.9598 4.2933 .61687 .55580 .31064 .22959 9014 8.4783 3.6482 .43030 .32178 .19161 .09831

7948 6.9613 4.0430 .58078 .48676 .22317 .13493 9037 6.2280 3.6398 .58442 .54158 .30414 .20531

7951 7.8541 4.2370 .53947 .44743 .22692 .13915 9106 6.5970 3.8616 .58535 .54880 .32348 .20660

7953 8.2645 5.0302 .60865 .55479 .31527 .18731 9107 5.1714 3.3429 .64641 .64587 .35389 .19974

7981 7.1043 4.0513 .57026 .45565 .17847 .08768 9129 7.3119 4.1505 .56764 .44550 .17204 .08553

7990 8.1000 4.7822 .59039 .47956 .21106 .11651 9163 6.7744 3.8654 .57059 .47961 .22220 .13504

7992 8.6087 3.7945 .44077 .31131 .14018 .02655 9213 9.6205 5.8817 .61137 .47632 .21321 .15518

7997 5.7417 2.9953 .52168 .46627 .25308 .16349 9214 8.2333 4.8701 .59151 .63509 .48165 .34176

7999 5.5263 3.0175 .54603 .38235 .02745 -.03001 9222 9.7619 5.6457 .57834 .42641 .15166 .07001

8022 7.1765 4.5601 .63543 .59827 .35027 .22304 9248 7.6250 4.5668 .59893 .49788 .21351 .10594

8023 5.7952 3.4677 .59837 .55931 .29710 .18139 9266 8.5676 4.9678 .57984 .51134 .27804 .16729

8047 6.6399 3.8327 .57722 .48994 .23226 .15117 9270 4.5895 2.6879 .58566 .58390 .30968 .18909

8060 8.2188 4.8761 .59329 .48055 .19208 .07406 9295 5.5048 3.3005 .59958 .54747 .28434 .24432

8062 9.0488 5.8012 .64111 .58626 .33172 .17853 9304 -- -- -- -- -- --

8068 6.0278 3.4865 .57841 .46375 .15148 .07167 9307 7.4449 4.2287 .56800 .46967 .21657 .11877

8081 7.1018 4.2741 .60184 .53133 .27910 .17893 9328 7.3146 4.3388 .59317 .51749 .27274 .18493

8089 7.0250 3.6788 .52368 .37607 .12881 .09359 9329 9.2000 4.8095 .52277 .38340 .17974 .02698

8221 12.737 6.6023 .51837 .37842 .15197 -.00134 9345 -- -- -- -- -- --

8252 5.8988 3.5156 .59599 .55297 .29198 .17643 9363 7.5820 4.5456 .59952 .50678 .24433 .15477

8265 8.7520 4.8704 .55649 .45788 .21661 .11531 9364 7.5571 4.5570 .60301 .52396 .26650 .16165

8289 7.6604 4.8440 .63234 .55061 .27276 .15486 9365 6.6765 3.8601 .57816 .54930 .37088 .29914

8305 4.5598 2.6021 .57065 .56262 .29565 .18600 9371 8.1905 4.7585 .58099 .48512 .23477 .13445

8335 9.1028 4.9450 .54324 .42687 .20913 .13787 9417 7.5719 4.2333 .55908 .46282 .22566 .14185

8400 5.8287 3.7561 .64442 .62635 .35539 .22367 9419 8.4340 4.7480 .56295 .44955 .20795 .12729

8445 8.1476 4.5292 .55589 .46752 .23909 .14465 9435 6.8442 4.3257 .63203 .60970 .37565 .23676

8446 6.4173 3.7279 .58091 .49973 .23583 .14768 9491 7.3089 4.1792 .57179 .47998 .23190 .14163

8451 7.4517 4.2403 .56904 .49455 .25418 .14471 9499 5.8442 3.4778 .59509 .53262 .25090 .14605

8531 7.8284 4.3693 .55813 .45872 .22054 .13586 9522 10.867 4.7714 .43909 .23875 .05113 .04373

8541 8.1176 4.3545 .53642 .46031 .20962 .06961 9527 5.3706 3.1886 .59371 .54594 .25925 .14987

8544 7.6450 4.3636 .57077 .47789 .23418 .13826 9532 6.5004 3.7362 .57477 .48746 .22888 .15014

8545 9.2500 5.0658 .54765 .31810 .00973 -.01592 9544 -- -- -- -- -- --

8563 6.2104 3.4784 .56009 .44853 .17698 .12302 9565 6.1066 3.5153 .57565 .51144 .26050 .17099

8566 5.3220 3.0933 .58123 .54998 .29953 .20584 9570 4.9082 2.9067 .59222 .55908 .26137 .14499

8583 5.6986 3.3414 .58636 .49671 .18205 .08263 9574 5.5000 3.1580 .57418 .45236 .09372 -.00688

8584 6.6944 3.9492 .58993 .51029 .24620 .15013 9588 6.8404 4.2133 .61594 .54439 .27019 .16355

8623 6.5383 3.7155 .56826 .46400 .19216 .11346 9665 7.2384 4.1371 .57155 .47485 .22221 .13470

8625 8.2804 4.4568 .53823 .45373 .23870 .14874 9715 7.0303 3.9382 .56017 .45349 .19810 .12027

8630 5.9680 3.3373 .55920 .48690 .23579 .15156 9729 8.0382 4.4781 .55710 .44688 .20672 .12696

8631 7.4500 4.3364 .58207 .52799 .30810 .20862 9772 7.2018 4.1432 .57530 .50208 .25406 .14573

8646 7.6154 4.1451 .54431 .44274 .21478 .13805 9814 9.2286 4.9210 .53324 .42418 .18485 .11329

8647 5.6825 3.3551 .59044 .52188 .23022 .13012 9815 7.9986 4.4614 .55777 .45641 .22589 .14890

8677 8.3832 4.1997 .50096 .39916 .19842 .10742 9816 6.7162 3.8802 .57774 .47723 .20300 .12285

8696 7.0385 3.2815 .46623 .26770 .07520 .06828 9817 5.9494 3.4169 .57432 .49570 .22474 .13993

8743 8.1645 4.6160 .56538 .45536 .21385 .13236 9829 5.6503 3.4136 .60415 .57055 .30771 .19811

8761 5.0516 2.9207 .57818 .54096 .26874 .17283 9830 5.3269 3.0288 .56859 .53505 .30910 .25298

8778 7.0458 4.0538 .57535 .46573 .19982 .12831 9858 6.6293 3.6534 .55110 .48305 .25398 .15690

8845 7.4868 4.5117 .60263 .50630 .23677 .14705 9893 6.9481 3.9917 .57450 .48610 .23800 .15675

8859 8.7297 4.8042 .55033 .43733 .21217 .13577 9916 7.4449 4.1646 .55939 .43530 .18205 .11886

8898 8.8175 4.6921 .53213 .42545 .20457 .11513 9976 6.7787 4.1337 .60981 .54809 .28957 .18512

8908 8.7500 5.2198 .59655 .57068 .37142 .23680

Appendix 4–3.3. L-moments of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 227

Appendix 4–3.4. L-moments of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0015 13.857 8.3333 0.60137 0.60686 0.63429 0.62286 1154 12.319 7.8282 0.63546 0.48102 0.20526 0.15526

0016 10.142 6.0300 .59456 .47178 .21322 .12165 1165 9.4276 5.5958 .59355 .47974 .22170 .12779

0050 10.203 5.7253 .56112 .42487 .18846 .12210 1185 6.0416 3.6413 .60272 .55616 .28644 .16091

0054 8.2917 4.7748 .57586 .42185 .12492 .03237 1186 11.170 7.1609 .64108 .55557 .31572 .20680

0120 23.000 13.434 .58408 .50520 .38815 .33380 1188 14.125 9.3750 .66372 .43238 -.02095 -.28762

0145 10.155 6.8037 .66999 .53691 .20890 .09791 1245 18.545 10.831 .58403 .48789 .24419 .09133

0146 10.659 5.5878 .52426 .40718 .20871 .06723 1246 8.5465 5.2660 .61616 .48206 .17765 .08903

0174 6.9260 4.6146 .66627 .62131 .33643 .19097 1267 8.7165 5.2012 .59670 .50146 .24585 .13680

0178 9.0556 6.2974 .69542 .62221 .29035 .03062 1304 10.510 6.2204 .59186 .46812 .21352 .11624

0179 6.7808 4.1964 .61886 .59812 .35996 .21806 1325 10.769 6.4843 .60210 .48266 .21957 .11688

0202 5.9879 3.7224 .62166 .55024 .22479 .08224 1429 9.6309 5.9456 .61735 .50991 .24294 .13913

0206 8.1831 4.9313 .60262 .48264 .19623 .10090 1431 11.207 6.7096 .59873 .47433 .21750 .12089

0208 -- -- -- -- -- -- 1432 10.967 6.5230 .59477 .45983 .18723 .08951

0211 9.3302 5.5161 .59121 .47462 .20958 .10985 1433 10.965 6.4194 .58544 .46515 .21229 .11464

0244 15.188 8.6010 .56629 .40427 .15801 .09134 1434 10.503 6.0753 .57844 .45534 .20323 .10609

0248 6.9668 4.3039 .61778 .54728 .27471 .16340 1435 10.478 6.2373 .59530 .46027 .19326 .10662

0262 9.9489 5.7694 .57990 .45783 .21492 .13371 1436 11.292 6.5367 .57886 .46189 .21179 .11084

0271 17.882 9.3162 .52097 .31523 .08682 .03825 1437 10.091 6.9913 .69284 .68898 .47696 .32837

0380 9.0968 5.1410 .56514 .44372 .18499 .07995 1438 10.841 6.3099 .58206 .45307 .19211 .09596

0394 15.500 10.821 .69816 .61056 .36304 .21782 1462 -- -- -- -- -- --

0408 11.083 6.4348 .58058 .45659 .21314 .13206 1492 8.0782 5.1774 .64091 .55422 .27011 .15214

0427 11.163 7.6071 .68144 .55864 .24193 .09358 1500 12.375 7.0525 .56990 .47141 .22301 .10707

0428 11.785 7.0968 .60217 .45932 .19637 .11508 1528 7.7997 4.9833 .63891 .56637 .29780 .18370

0429 14.530 8.4078 .57866 .40170 .14062 .07353 1541 8.7193 5.3127 .60930 .44870 .12241 .03979

0463 8.4245 5.4247 .64392 .55991 .27899 .15036 1569 11.893 7.0696 .59444 .44081 .17247 .09805

0493 11.062 5.4625 .49379 .36450 .20789 .19082 1632 -- -- -- -- -- --

0495 7.3344 4.7013 .64099 .57466 .29476 .16907 1641 8.6000 5.2899 .61511 .52143 .24708 .12111

0496 1.3333 .31339 .23504 .87709 .70364 .49273 1646 6.9152 4.3499 .62903 .55099 .25311 .12833

0498 3.0909 1.9818 .64118 .89602 .75535 .59633 1663 11.622 7.2628 .62494 .41914 .06360 -.01367

0509 10.093 6.1754 .61183 .49014 .22530 .13438 1671 9.4024 5.8771 .62506 .50847 .22787 .12735

0518 8.4230 5.1067 .60628 .48754 .20561 .11404 1680 10.298 5.8958 .57251 .43912 .18475 .09807

0521 9.0938 4.6200 .50804 .34157 .09310 .03888 1694 8.5474 5.3558 .62660 .50225 .20323 .11379

0556 9.6400 5.4760 .56805 .47062 .24808 .14822 1696 9.3770 5.8636 .62531 .54237 .28821 .16868

0569 9.0084 5.6182 .62367 .51723 .24144 .13654 1697 7.4940 4.2971 .57341 .51070 .24940 .11196

0572 9.7702 5.8237 .59607 .49232 .23929 .13515 1698 8.3881 5.1327 .61190 .48487 .19184 .10745

0576 11.429 7.0815 .61963 .49159 .22102 .11879 1720 7.1256 4.9002 .68769 .64279 .34434 .17586

0580 9.4487 5.5288 .58513 .47131 .21722 .12024 1761 11.526 6.8355 .59306 .40441 .11502 .05872

0587 11.115 6.3613 .57230 .46564 .23637 .14724 1773 9.6492 5.6733 .58796 .45609 .19924 .12234

0605 9.2545 5.4500 .58890 .48923 .25824 .18261 1810 7.6364 3.7706 .49376 .40677 .22433 .07264

0639 7.5466 4.8237 .63919 .55950 .27087 .14700 1823 7.7619 3.8571 .49693 .39714 .21941 .16467

0655 -- -- -- -- -- -- 1870 11.808 6.7536 .57196 .44790 .20660 .11010

0665 9.8484 5.8501 .59402 .48983 .23512 .12907 1875 9.1875 4.3792 .47664 .41634 .14325 -.02149

0689 9.7062 6.2068 .63947 .54059 .26289 .13755 1876 11.698 6.1672 .52722 .31438 .06730 .04905

0690 6.3545 4.0248 .63338 .56605 .25553 .12099 1889 14.926 8.9987 .60290 .42777 .16621 .10536

0691 9.0158 5.3113 .58910 .48687 .23588 .13779 1903 6.3168 3.8889 .61565 .53512 .22518 .10516

0708 7.0000 4.2911 .61301 .52270 .23925 .14894 1914 9.7368 5.2339 .53754 .58028 .36009 .19302

0738 10.452 5.8905 .56359 .44003 .19772 .11059 1920 9.3750 5.4425 .58054 .46095 .20403 .10800

0776 7.4674 4.5302 .60667 .52059 .24421 .12738 1921 9.7236 5.6534 .58140 .45304 .20041 .11695

0779 6.6709 4.2559 .63798 .56205 .25048 .12142 1937 11.045 6.3065 .57096 .44939 .21226 .12918

0784 7.1645 4.5186 .63069 .55965 .27956 .15981 1956 9.2764 5.6099 .60474 .48918 .22251 .12752

0786 9.4449 5.7717 .61109 .49906 .22478 .11729 1970 12.318 7.8939 .64084 .62369 .48425 .36994

0917 10.459 6.0689 .58024 .46186 .21415 .12254 2014 10.624 6.5745 .61885 .47808 .18841 .09054

0923 14.826 7.5810 .51133 .36839 .28147 .29789 2015 10.823 6.8576 .63361 .51155 .23453 .13300

0926 9.4661 5.5207 .58320 .45355 .19299 .10789 2019 13.650 7.2816 .53345 .34273 .15347 .10753

0950 4.1860 1.9745 .47169 .57392 .41374 .24318 2024 9.6138 5.7037 .59328 .46256 .19542 .10819

0996 14.950 7.1868 .48073 .32040 .09083 .04601 2042 7.8000 5.2667 .67521 .56962 .18626 -.08017

1013 6.5580 4.2880 .65386 .59969 .29783 .15442 2043 6.3000 4.1972 .66621 .62332 .30857 .13677

1017 8.9695 5.4856 .61159 .49791 .22668 .13333 2048 8.1450 5.2663 .64657 .55530 .26087 .13784

1042 17.944 9.4608 .52723 .47703 .33506 .34508 2050 11.300 7.7452 .68542 .56701 .27110 .17161

1048 7.2083 3.5924 .49837 .40182 .13970 -.01783 2051 7.1148 4.4164 .62074 .58234 .32419 .15781

1053 10.427 6.2218 .59671 .47779 .22184 .12639 2053 4.4000 2.3111 .52525 .36779 -.04224 -.07933

1057 9.3270 5.3170 .57007 .46930 .23273 .13735 2073 9.2736 5.5783 .60153 .49947 .23151 .11286

1063 14.421 6.5205 .45215 .22680 .18003 .24914 2082 6.5374 4.0415 .61822 .55825 .28081 .15876

1068 9.4915 5.6877 .59923 .47426 .20853 .12237 2086 9.2426 5.5175 .59697 .46818 .19746 .11279

1080 7.0468 4.5698 .64849 .57506 .26451 .11442 2088 9.2979 5.2331 .56283 .34125 .01145 -.03983

1081 10.454 5.8821 .56266 .43402 .18935 .10180 2090 7.9167 4.8718 .61538 .52515 .26240 .17073

1133 13.929 9.3681 .67258 .51672 .18262 .00837 2096 9.5299 5.6395 .59176 .46576 .20789 .12601

1136 10.846 6.9770 .64326 .52285 .24194 .13738 2128 11.934 6.7203 .56312 .40822 .15421 .06940

1138 9.1765 3.8824 .42308 .26818 .02652 -.03409 2131 8.4625 5.1554 .60921 .49493 .21689 .12587

1139 14.117 8.2310 .58306 .41647 .15394 .06349 2142 14.500 8.3667 .57701 .56474 .39347 .28770

Appendix 4–3.4. L-moments of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
228 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 14.318 8.4697 0.59153 0.40419 0.13703 0.04969 3463 10.432 5.8631 0.56204 0.37616 0.10832 0.06569

2206 9.2238 5.4361 .58936 .49009 .23373 .12611 3476 9.6563 5.6687 .58704 .47048 .20991 .10707

2238 10.068 6.4172 .63736 .53206 .26486 .16026 3485 8.2727 3.4459 .41654 .26457 .16404 .04047

2240 9.1481 5.8056 .63462 .47970 .14522 .06835 3507 8.4287 5.2675 .62495 .50558 .20972 .11941

2242 10.779 6.2066 .57578 .43418 .17905 .09587 3546 9.9216 5.8708 .59172 .45515 .19245 .11450

2244 10.406 6.2056 .59635 .45665 .19304 .11725 3547 8.2604 5.1123 .61890 .53565 .28017 .17579

2247 11.396 6.1910 .54327 .41106 .17612 .03515 3579 10.775 6.3400 .58842 .45882 .18351 .07087

2309 11.069 6.2520 .56483 .42214 .17764 .09638 3642 9.6306 5.5710 .57847 .44840 .19663 .11599

2312 9.2471 5.4430 .58862 .45223 .18866 .12165 3646 10.027 5.6219 .56065 .44874 .21420 .12474

2334 9.7091 5.5657 .57324 .36672 .04233 -.02032 3668 16.222 8.3203 .51289 .40377 .16850 .06481

2336 7.8990 4.6768 .59207 .48117 .20791 .11751 3673 16.182 8.3636 .51685 .31040 .10154 .06980

2354 9.1200 5.9633 .65387 .58349 .32878 .22312 3686 8.5208 5.1837 .60836 .48640 .20679 .12335

2355 12.717 8.6391 .67932 .59201 .30714 .13014 3691 8.4847 5.0682 .59734 .47463 .20022 .11595

2357 9.7468 6.1712 .63315 .51770 .22578 .10430 3734 14.391 8.5929 .59709 .44697 .22427 .17551

2360 9.8550 6.1648 .62555 .51125 .23444 .12964 3771 7.5220 4.6503 .61823 .50668 .20125 .10024

2361 7.4765 4.6990 .62851 .54625 .25158 .10987 3789 7.3125 5.0191 .68637 .63947 .35692 .22522

2394 10.059 5.7428 .57093 .44424 .19940 .11408 3826 8.7980 4.9026 .55724 .46562 .24918 .17970

2404 9.4078 5.4959 .58418 .45260 .18895 .10232 3831 10.239 5.9740 .58346 .44440 .18146 .09938

2415 10.599 6.0347 .56936 .44199 .20238 .11909 3841 7.8369 4.7877 .61092 .53154 .27547 .17432

2462 9.6464 5.7577 .59688 .47397 .20761 .10839 3871 10.306 6.1126 .59311 .48391 .22864 .12114

2528 10.509 6.7452 .64182 .53883 .26939 .13917 3884 7.6500 3.2658 .42690 .29412 .20984 .13856

2617 9.9736 5.6674 .56824 .45109 .20884 .11324 3941 14.857 8.5922 .57832 .42361 .18591 .09115

2619 9.1884 5.6338 .61314 .51061 .25661 .16535 3963 -- -- -- -- -- --

2621 8.2592 4.9994 .60532 .50077 .21972 .10752 4040 8.6442 4.9252 .56977 .46253 .21201 .11646

2675 8.8760 5.4281 .61155 .50768 .23896 .13325 4058 12.750 7.5289 .59051 .43283 .10247 -.06898

2676 7.4948 4.7773 .63742 .54772 .24840 .13039 4098 6.5750 4.0706 .61911 .54663 .25545 .13849

2679 8.4799 5.3728 .63359 .53355 .24630 .13228 4100 8.1543 4.7901 .58743 .49669 .25368 .15893

2715 9.1849 5.2243 .56879 .44688 .19512 .10734 4137 7.6730 4.5995 .59943 .47744 .18399 .09856

2744 8.2594 5.0711 .61398 .52160 .25478 .14680 4191 8.9728 5.5085 .61390 .50005 .22115 .11973

2758 11.376 7.3529 .64634 .58059 .35231 .22962 4256 -- -- -- -- -- --

2794 6.7273 3.9636 .58919 .51376 .30810 .29434 4257 9.2614 5.5241 .59646 .45582 .17753 .10139

2797 7.6779 4.7201 .61477 .52131 .23391 .11373 4258 9.3210 5.6536 .60654 .44674 .14187 .07873

2811 8.1994 5.1576 .62902 .53683 .25500 .13779 4278 9.2261 5.4009 .58539 .49406 .25222 .14664

2813 8.7273 5.7273 .65625 .56871 .27318 .10557 4299 5.9576 3.6611 .61452 .58702 .32912 .19407

2814 7.6250 5.6750 .74426 .70925 .37455 .09375 4300 11.459 6.9451 .60606 .46733 .19979 .11299

2815 6.3435 3.7086 .58463 .47664 .16738 .06722 4305 11.272 6.9055 .61260 .47826 .20980 .12128

2818 8.8198 5.5123 .62499 .54158 .29456 .20346 4307 13.015 8.3017 .63785 .48575 .20072 .11754

2986 11.889 6.7242 .56556 .41447 .16769 .09387 4309 9.3935 5.6333 .59970 .50182 .24308 .13374

3005 8.6039 5.1455 .59804 .47653 .20406 .11880 4311 9.9428 5.9602 .59945 .49131 .23550 .13128

3033 5.8535 3.2795 .56027 .53155 .29333 .15897 4313 11.436 6.5439 .57220 .40399 .12651 .04153

3034 -- -- -- -- -- -- 4319 10.894 5.8118 .53348 .37333 .13216 .05762

3047 15.957 9.7984 .61407 .48044 .19633 .05790 4329 10.014 6.0165 .60082 .48427 .22089 .12022

3103 8.6071 5.3664 .62348 .47798 .16065 .08541 4331 -- -- -- -- -- --

3133 9.9709 5.6821 .56987 .43822 .19224 .10959 4375 7.9340 5.0961 .64231 .55436 .26810 .15764

3156 10.552 6.4681 .61300 .47116 .19419 .11345 4392 13.132 7.4714 .56895 .43363 .20172 .13396

3171 9.9479 5.7206 .57506 .45036 .20014 .11227 4425 7.1269 4.5915 .64424 .56613 .26021 .12627

3189 7.6176 4.9265 .64673 .58359 .31483 .19760 4440 10.500 5.9952 .57099 .46642 .22424 .12683

3260 8.6129 5.0243 .58335 .45001 .16932 .07523 4476 8.5447 5.0464 .59058 .46176 .18744 .10844

3267 8.9100 5.5219 .61974 .55555 .31967 .19475 4498 5.2727 3.4909 .66207 .72222 .55295 .48177

3270 6.6681 4.1562 .62330 .54118 .23628 .11634 4517 10.120 5.9888 .59178 .46832 .21234 .12031

3272 7.8421 5.0643 .64579 .52615 .17071 .00633 4520 7.9469 4.8581 .61132 .48315 .17501 .08158

3277 7.0000 4.6813 .66876 .58451 .23496 .06466 4525 19.619 13.729 .69976 .56982 .24789 .04821

3278 6.6842 4.1279 .61756 .57505 .31898 .18680 4563 9.4231 6.0723 .64441 .62769 .46875 .39819

3280 6.3733 3.7797 .59305 .56189 .32372 .19262 4570 8.5193 5.2341 .61439 .50636 .22987 .13181

3281 4.6279 2.8538 .61665 .62407 .31487 .11997 4577 9.0888 5.4752 .60241 .48017 .21065 .12354

3283 11.978 7.0294 .58684 .44005 .18261 .10181 4591 11.403 6.5380 .57336 .44730 .20556 .11801

3284 9.3558 5.6209 .60079 .47678 .21102 .12613 4670 8.2013 5.0069 .61049 .50419 .22599 .12636

3285 8.2800 5.0036 .60430 .47744 .18980 .10740 4671 9.4179 5.8800 .62435 .49340 .21528 .14800

3329 10.289 6.1921 .60184 .47876 .21736 .12313 4679 8.9991 5.4789 .60882 .47860 .19657 .11499

3335 11.524 6.7065 .58195 .43000 .15971 .06688 4696 8.0833 5.3864 .66635 .64669 .44866 .31786

3370 9.4296 5.3577 .56818 .44880 .19861 .11103 4703 8.3211 5.4117 .65035 .58196 .33046 .23390

3410 8.1799 4.9973 .61092 .50541 .22893 .13034 4704 12.054 6.9255 .57452 .41769 .17235 .11623

3415 8.9056 5.3795 .60406 .48050 .20779 .12476 4731 11.284 7.0267 .62269 .47197 .19513 .13565

3430 11.004 6.6524 .60454 .47316 .21516 .13369 4792 8.0353 4.9893 .62092 .51759 .23336 .13343

3431 13.820 8.4684 .61277 .41828 .12280 .07027 4819 8.9278 5.2855 .59203 .45747 .18934 .11934

3441 8.9730 5.8228 .64893 .54881 .24737 .10367 4852 3.6250 2.3917 .65977 .84370 .68794 .58372

3442 9.0043 5.1017 .56659 .47999 .25155 .15251 4866 9.5753 5.6413 .58915 .46504 .20753 .12084

3446 6.9181 4.0352 .58328 .52752 .28440 .16572 4876 8.6721 5.2826 .60915 .49412 .22825 .15088

3460 9.6667 5.1524 .53300 .32277 .03686 -.01861 4878 11.137 6.4710 .58104 .44812 .19873 .11642

3462 9.8281 5.6620 .57611 .44599 .19901 .12344 4880 8.0498 4.8740 .60548 .51538 .25434 .15005

Appendix 4–3.4. L-moments of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 229

4920 8.1232 5.0815 0.62555 0.53257 0.25598 0.14840 5957 7.8970 4.7741 0.60454 0.49965 0.22443 0.13035

4934 7.8571 4.8571 .61818 .42353 .00000 -.09804 5958 10.386 6.1070 .58798 .46022 .19348 .09766

4972 9.0623 5.3718 .59276 .47231 .20811 .11542 5973 13.178 7.6137 .57777 .44558 .20753 .11219

4973 10.923 5.8868 .53895 .38543 .14266 .07005 5996 9.5030 5.6509 .59464 .46723 .20487 .12147

4974 8.6128 5.1500 .59795 .49792 .24216 .14320 6017 8.3167 5.1028 .61356 .51774 .23344 .10047

4975 8.5857 5.0871 .59251 .45828 .17741 .09591 6024 11.321 6.6725 .58942 .44294 .18984 .12209

4978 8.1278 4.9870 .61357 .48921 .19269 .10853 6050 9.3684 3.2807 .35019 .15445 .16876 .08362

4979 16.611 10.062 .60574 .53500 .29498 .07576 6104 7.1652 4.5983 .64175 .59481 .33002 .19414

4982 8.6323 4.8833 .56571 .44893 .19171 .10163 6108 9.4443 5.6601 .59931 .46919 .20084 .11906

5018 9.1426 5.0631 .55379 .45720 .21594 .10897 6136 6.7968 4.2317 .62260 .54633 .25406 .13511

5048 7.3725 4.6483 .63050 .54446 .24896 .12732 6166 8.5294 4.8333 .56667 .44735 .17779 .06780

5049 5.4286 3.1629 .58264 .50814 .21368 .14215 6176 10.617 6.2143 .58530 .45870 .21609 .14869

5056 6.2000 3.9000 .62903 .48718 .10256 .30769 6177 9.4262 5.6539 .59981 .47956 .21744 .13111

5057 10.065 6.4883 .64463 .54136 .26596 .15061 6210 8.8315 5.2272 .59188 .46550 .19496 .10743

5060 9.5593 6.1392 .64223 .57351 .31723 .18449 6211 9.1045 5.9858 .65745 .55312 .25150 .12332

5081 11.843 6.6668 .56293 .43709 .21685 .14660 6270 9.1639 5.4732 .59726 .46164 .18910 .11463

5094 8.7009 5.1724 .59446 .46879 .19794 .11793 6275 -- -- -- -- -- --

5113 9.6619 6.0547 .62666 .51165 .23465 .13388 6276 14.429 8.3524 .57888 .40743 .12671 .02888

5114 -- -- -- -- -- -- 6335 9.8524 5.5557 .56389 .44503 .20380 .11376

5123 6.2667 3.4952 .55775 .47935 .22029 .11069 6434 12.882 5.9853 .46461 .33071 .10881 -.02344

5192 9.1131 5.3472 .58677 .46541 .20485 .11586 6504 7.5342 4.7115 .62534 .53609 .25035 .14188

5193 9.9171 5.9329 .59825 .46722 .19840 .11006 6558 9.3793 5.4532 .58141 .45247 .20772 .12524

5224 10.372 6.0702 .58524 .44576 .19283 .11750 6615 7.3780 4.7473 .64344 .56044 .25763 .12750

5228 8.4249 5.2125 .61869 .51428 .23920 .13990 6660 12.361 7.5473 .61058 .46896 .19386 .08219

5235 12.074 6.0940 .50472 .22113 -.01150 .04325 6663 6.9579 4.6611 .66991 .61058 .29985 .14215

5247 8.0791 4.9744 .61571 .52296 .25303 .14898 6734 9.1960 5.3504 .58182 .45591 .19634 .11758

5258 10.526 5.9759 .56776 .43118 .18048 .09520 6736 7.0225 4.4179 .62910 .56508 .29092 .17103

5303 9.7450 5.7815 .59328 .49965 .23535 .10824 6740 19.385 12.705 .65542 .53252 .26034 .12861

5312 7.6866 4.8651 .63292 .54488 .25709 .14206 6750 11.539 7.4569 .64623 .49371 .18176 .07915

5341 13.545 7.6494 .56472 .35501 .00925 -.10319 6757 10.220 6.0487 .59184 .46405 .21059 .13093

5342 -- -- -- -- -- -- 6775 9.6410 5.6588 .58695 .46233 .20022 .10883

5348 9.3999 5.6253 .59844 .46850 .20453 .13099 6776 7.6513 4.6532 .60816 .51475 .24180 .13974

5358 8.4686 4.9808 .58815 .50066 .25594 .14685 6788 9.1605 4.6506 .50768 .36678 .14201 .06362

5398 10.472 6.0267 .57552 .45393 .20724 .11768 6792 5.7078 3.5801 .62723 .60140 .32229 .18136

5410 7.3392 4.5964 .62628 .55060 .27060 .14850 6794 21.474 11.152 .51934 .36506 .26008 .28841

5411 9.6106 5.8277 .60638 .49453 .23478 .13973 6834 8.6574 5.1901 .59950 .47148 .19181 .10703

5424 14.888 9.1493 .61456 .44286 .17641 .10841 6893 6.0866 3.8893 .63900 .60377 .32576 .19912

5429 9.1146 5.6042 .61486 .50788 .23119 .11585 6935 6.6001 4.1253 .62504 .56563 .28483 .15946

5431 17.357 8.3571 .48148 .24129 .13095 .19945 6981 9.3125 5.5951 .60082 .51025 .24021 .10019

5461 10.970 6.4253 .58570 .46896 .22650 .13245 7020 13.557 7.3643 .54323 .38419 .17055 .12171

5463 8.1390 4.9646 .60997 .49084 .19994 .10741 7060 7.4315 4.5841 .61685 .51719 .22024 .11005

5471 7.2500 5.2132 .71906 .68602 .38296 .19516 7066 10.171 5.9284 .58285 .45261 .20001 .11662

5477 7.5217 4.9209 .65423 .58830 .29696 .13769 7074 6.9359 4.2827 .61746 .54573 .26986 .15601

5528 8.7812 5.0115 .57070 .45848 .20567 .11205 7097 9.6667 5.7758 .59749 .48018 .21530 .12079

5579 -- -- -- -- -- -- 7116 8.5196 5.0395 .59151 .49930 .24453 .13669

5580 9.1250 4.7844 .52432 .42308 .19216 .10344 7140 9.3182 5.7383 .61581 .51235 .24535 .13938

5589 6.4423 4.0426 .62750 .58247 .31274 .18723 7173 11.474 7.0900 .61793 .47866 .19608 .09516

5590 8.6497 5.2020 .60141 .49488 .21364 .09916 7174 11.498 6.9817 .60721 .47006 .20748 .12626

5591 6.8020 4.1603 .61164 .58806 .35266 .21647 7213 10.134 6.1139 .60329 .48304 .21700 .12047

5592 6.7466 4.0443 .59947 .57315 .33463 .19632 7243 8.8106 5.4915 .62329 .51195 .22851 .12574

5594 5.2407 3.1967 .60998 .64072 .41167 .25337 7262 6.5169 4.5444 .69734 .66795 .35239 .15107

5595 -- -- -- -- -- -- 7274 7.7358 4.4170 .57099 .45380 .19588 .11431

5596 6.0164 3.9042 .64892 .61173 .31153 .15847 7300 8.1928 4.7668 .58183 .48583 .23492 .13544

5600 7.8351 5.0060 .63893 .61049 .36360 .20421 7311 8.3846 4.9908 .59523 .47441 .21112 .11627

5618 11.857 6.2116 .52387 .35313 .07711 .00696 7363 14.450 8.6395 .59789 .48523 .26173 .19441

5650 7.1053 2.8772 .40494 .19225 .09344 .09684 7422 9.3188 5.7508 .61711 .50190 .22710 .12831

5656 7.2205 4.5714 .63311 .53879 .22837 .11090 7431 7.3365 4.4453 .60592 .52782 .26044 .14710

5658 8.9721 5.3252 .59353 .51454 .27550 .16405 7481 7.0104 4.3550 .62122 .56110 .29593 .17634

5661 8.1327 5.5505 .68250 .61121 .31424 .17274 7497 8.7752 5.4236 .61805 .49190 .20273 .11991

5666 8.7500 4.9415 .56475 .38662 .06724 -.03165 7498 8.1199 5.1364 .63257 .52732 .23251 .13069

5695 9.3760 5.5165 .58836 .45804 .19630 .11661 7499 8.3197 5.1179 .61515 .49582 .20331 .10760

5742 12.000 7.4083 .61736 .44111 .16272 .14994 7531 11.704 6.9653 .59512 .45441 .18698 .08906

5766 15.652 5.9209 .37828 .09079 .11644 .15491 7534 8.9184 5.4637 .61264 .50310 .22966 .13220

5770 8.4910 5.1552 .60714 .49768 .22481 .12941 7556 8.2756 4.9761 .60129 .47904 .19428 .10325

5775 5.0833 2.8712 .56483 .48496 .17678 .04661 7594 9.4682 5.6651 .59832 .49922 .24766 .14189

5779 12.000 7.2105 .60088 .47388 .29100 .28812 7596 8.3057 5.1008 .61414 .53468 .27289 .15034

5840 10.699 6.3355 .59217 .48684 .23940 .13311 7608 9.0951 5.4351 .59759 .47550 .21196 .12890

5890 8.9758 5.4465 .60680 .50174 .23399 .12827 7622 6.0000 3.8286 .63810 .56206 .19154 -.02204

5891 7.0789 4.0973 .57881 .49886 .24840 .15993 7700 11.059 6.3806 .57696 .45306 .20781 .11675

5897 8.3926 5.1214 .61022 .47902 .18030 .09175 7706 8.4484 5.2188 .61772 .51008 .22901 .12842

Appendix 4–3.4. L-moments of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
230 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 13.793 8.2428 0.59762 0.42107 0.15831 0.11216 8910 6.7000 2.8895 0.43126 0.38251 0.22515 0.09757

7745 13.298 7.4469 .56001 .38940 .15328 .09847 8911 8.1685 4.9629 .60757 .51030 .24197 .13700

7922 6.1485 3.8311 .62309 .57421 .28821 .15436 8924 5.6029 3.3235 .59318 .58809 .34105 .18673

7936 9.1892 5.4713 .59541 .47962 .22009 .12969 8929 16.167 10.134 .62684 .45735 .19905 .16100

7943 9.4613 5.7164 .60419 .49421 .22706 .11972 8942 9.4877 5.6473 .59523 .45405 .18307 .11348

7944 11.388 7.3157 .64240 .51912 .24379 .14850 8944 9.5264 5.7140 .59981 .47741 .21577 .12769

7945 11.896 7.2831 .61225 .47342 .20697 .12216 8996 9.5126 5.6543 .59440 .49214 .23634 .13267

7947 10.134 6.5660 .64794 .53910 .26155 .14911 9014 11.900 6.2105 .52189 .50028 .40728 .33709

7948 8.8458 5.3603 .60596 .48297 .19751 .09651 9037 7.4946 4.6466 .61999 .56655 .32058 .20511

7951 9.7563 5.5453 .56838 .45516 .21623 .12710 9106 8.9006 5.7625 .64743 .60311 .37205 .24397

7953 10.600 6.6554 .62787 .53380 .26283 .13217 9107 7.8387 5.9484 .75885 .76363 .52256 .32725

7981 9.5049 6.1399 .64597 .55981 .29633 .17683 9129 9.9897 6.1052 .61115 .44540 .11783 .01200

7990 12.750 8.1957 .64280 .51964 .25977 .17386 9163 8.7466 5.2301 .59796 .47960 .20544 .10899

7992 11.850 6.1079 .51543 .47810 .24745 .06474 9213 12.152 7.7627 .63880 .49968 .23079 .15351

7997 9.0097 5.4875 .60907 .54002 .30672 .19013 9214 9.6786 6.2500 .64576 .67336 .49663 .33597

7999 7.8235 4.7941 .61278 .48896 .21209 .18452 9222 12.668 7.3454 .57981 .42302 .17931 .11732

8022 9.8333 6.4407 .65498 .54163 .22810 .08610 9248 9.9483 6.1666 .61986 .47696 .16935 .06549

8023 7.6099 4.8182 .63316 .56283 .28918 .16382 9266 10.522 5.9629 .56672 .45689 .21814 .12999

8047 8.6888 5.2735 .60694 .49400 .22331 .13138 9270 6.7516 4.3484 .64406 .59210 .30807 .16914

8060 10.203 6.3041 .61784 .51647 .26021 .16097 9295 7.3608 4.6173 .62728 .52389 .22168 .12686

8062 9.7000 6.1885 .63799 .55343 .27954 .13911 9304 -- -- -- -- -- --

8068 7.2647 4.5071 .62041 .51397 .21155 .12084 9307 8.5413 5.0093 .58648 .47044 .20106 .09780

8081 9.4090 5.9350 .63078 .52870 .25649 .14576 9328 10.152 6.6811 .65812 .57065 .30294 .17591

8089 8.1316 4.6181 .56792 .42461 .14393 .06855 9329 16.167 10.061 .62231 .48825 .23594 .07957

8221 12.737 6.6023 .51837 .37842 .15197 -.00134 9345 -- -- -- -- -- --

8252 7.5228 4.6872 .62307 .54768 .27144 .14497 9363 11.000 6.8683 .62439 .49013 .21108 .11970

8265 11.656 6.7816 .58179 .45380 .19653 .10131 9364 10.111 6.3368 .62673 .51109 .23437 .12862

8289 8.9600 5.5698 .62163 .50918 .22558 .10981 9365 8.6129 5.4860 .63695 .60629 .40709 .28932

8305 6.5071 4.0839 .62760 .56904 .27892 .14092 9371 10.765 6.5573 .60912 .47408 .19437 .09098

8335 11.418 6.4791 .56745 .43538 .20276 .12671 9417 9.6249 5.6766 .58978 .47858 .22944 .13814

8400 6.8107 4.4946 .65993 .61596 .33569 .19863 9419 11.386 6.7028 .58868 .45047 .19394 .11043

8445 10.479 6.0758 .57978 .46373 .21515 .11756 9435 8.0411 5.2317 .65062 .59796 .33846 .18819

8446 8.8435 5.3155 .60106 .47739 .20076 .11002 9491 9.6355 5.7288 .59455 .47554 .21277 .11568

8451 9.6851 5.9367 .61297 .51726 .24620 .11206 9499 7.7442 4.8632 .62798 .53292 .24107 .12782

8531 9.8673 5.7719 .58495 .46834 .21725 .12642 9522 20.636 10.491 .50837 .38648 .20999 .14298

8541 10.128 5.6939 .56221 .45318 .18936 .06805 9527 7.3855 4.6124 .62453 .53061 .23298 .11720

8544 10.340 6.2869 .60799 .49664 .24418 .14925 9532 8.4114 5.0621 .60182 .49003 .22026 .12903

8545 15.125 7.9750 .52727 .24138 .01995 .07475 9544 -- -- -- -- -- --

8563 8.4265 4.9176 .58358 .44757 .18009 .11697 9565 8.1710 4.9707 .60833 .51622 .25584 .15760

8566 6.8100 4.2665 .62650 .56587 .29267 .17493 9570 6.7794 4.2716 .63009 .54831 .24013 .11429

8583 8.0690 4.9977 .61937 .49671 .19233 .09936 9574 5.5000 3.1580 .57418 .45236 .09372 -.00688

8584 8.4984 5.2073 .61274 .50356 .22256 .11549 9588 9.2440 6.0389 .65328 .55701 .27301 .15274

8623 8.8539 5.3467 .60389 .48180 .20736 .11868 9665 9.6708 5.8174 .60155 .48324 .21908 .12104

8625 10.299 5.7811 .56135 .44541 .20700 .11822 9715 9.0195 5.2457 .58160 .45561 .19399 .10835

8630 7.4431 4.3885 .58961 .49430 .22283 .11628 9729 10.296 5.9471 .57761 .44302 .18956 .10897

8631 9.3262 5.7054 .61176 .52856 .28073 .16391 9772 9.3719 5.7859 .61737 .52811 .27263 .16384

8646 9.2841 5.3566 .57696 .46809 .22545 .13507 9814 11.438 6.4798 .56654 .44001 .19640 .13243

8647 7.4653 4.5889 .61471 .50775 .21066 .11419 9815 10.912 6.4801 .59387 .47870 .23620 .14591

8677 11.752 6.3624 .54140 .41049 .17534 .08731 9816 7.5493 4.5408 .60149 .48687 .19048 .09160

8696 9.6957 4.7589 .49083 .30897 .16718 .17324 9817 8.1471 4.9514 .60776 .49740 .21874 .12572

8743 10.447 6.0870 .58266 .44984 .19759 .11456 9829 7.3598 4.6614 .63336 .56609 .29225 .16879

8761 6.7911 4.1995 .61838 .54288 .25659 .14182 9830 6.7397 4.1821 .62052 .57847 .33871 .23639

8778 9.4667 5.6282 .59452 .45838 .19054 .11547 9858 8.0295 4.6981 .58511 .50430 .25813 .14514

8845 10.059 6.2795 .62428 .50057 .22646 .13695 9893 8.8778 5.3215 .59942 .48797 .22590 .13254

8859 11.269 6.6114 .58667 .45715 .20576 .11335 9916 9.5957 5.4949 .57264 .42063 .15884 .09340

8898 10.775 6.0791 .56421 .44945 .21415 .12068 9976 8.5873 5.4181 .63094 .53838 .26479 .15287

8908 12.452 7.1462 .57392 .40579 .15649 .11230

Appendix 4–3.4. L-moments of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 231

Appendix 4–3.5. L-moments of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0015 21.800 12.300 0.56422 0.39837 -0.17886 -0.34146 1154 19.907 12.571 0.63149 0.46729 0.22952 0.18292

0016 13.195 8.0248 .60816 .46441 .19927 .10910 1165 11.639 7.0162 .60279 .47247 .21023 .11785

0050 12.436 7.1437 .57443 .42740 .18568 .11602 1185 6.6147 4.1121 .62165 .57014 .29765 .16397

0054 17.027 10.470 .61490 .44187 .18822 .14106 1186 14.330 9.0178 .62931 .49742 .23376 .13477

0120 30.200 17.086 .56575 .46565 .28137 .12605 1188 14.125 9.3750 .66372 .43238 -.02095 -.28762

0145 14.919 10.138 .67955 .52963 .23443 .15551 1245 22.300 12.253 .54945 .37342 .12999 .04543

0146 14.622 7.3273 .50113 .34008 .11788 .04755 1246 11.270 7.0133 .62229 .46737 .17875 .10558

0174 11.182 7.5193 .67244 .54697 .24089 .12625 1267 11.583 7.1982 .62143 .50139 .23447 .12810

0178 17.714 12.110 .68362 .46506 .04616 -.10778 1304 13.907 8.2788 .59529 .43574 .17017 .08389

0179 11.316 7.4738 .66046 .56152 .28195 .14712 1325 13.905 8.3762 .60240 .45021 .18508 .10403

0202 9.0000 5.9753 .66392 .56217 .25799 .13159 1429 11.721 7.4117 .63235 .51143 .24166 .13837

0206 10.688 6.5670 .61445 .46702 .17830 .09000 1431 13.561 8.2523 .60854 .47072 .21161 .12004

0208 -- -- -- -- -- -- 1432 13.724 8.2558 .60154 .44786 .17965 .09936

0211 12.241 7.3995 .60446 .45965 .18492 .09133 1433 13.410 7.8894 .58831 .44173 .18576 .10515

0244 19.129 11.634 .60816 .46722 .23392 .16782 1434 13.110 7.7741 .59302 .45589 .20213 .11198

0248 9.0200 5.7873 .64160 .54469 .26588 .15144 1435 13.062 7.8482 .60082 .44527 .18036 .10779

0262 12.170 7.1995 .59160 .45343 .20083 .11458 1436 13.935 8.1476 .58466 .44656 .19288 .10385

0271 22.800 12.619 .55347 .37149 .16894 .09216 1437 11.571 7.8048 .67449 .62011 .38318 .25767

0380 11.488 6.9754 .60717 .48950 .22674 .11216 1438 13.137 7.8532 .59778 .45578 .19376 .10793

0394 23.571 14.905 .63232 .59617 .47923 .55591 1462 -- -- -- -- -- --

0408 21.944 11.768 .53626 .33685 .13538 .07192 1492 10.530 6.8616 .65164 .53389 .24333 .12932

0427 14.750 10.115 .68574 .52686 .19196 .05532 1500 23.722 17.082 .72007 .64205 .39439 .22623

0428 15.546 9.4401 .60723 .44739 .19026 .11967 1528 10.027 6.5584 .65411 .54882 .26562 .14865

0429 19.143 11.049 .57720 .39230 .14806 .08895 1541 14.479 8.7017 .60098 .35757 .01293 -.03895

0463 10.745 7.3731 .68620 .60374 .33178 .19476 1569 14.594 8.5367 .58496 .39060 .11023 .05236

0493 18.385 10.372 .56416 .39948 .17058 .03738 1632 -- -- -- -- -- --

0495 10.353 6.6299 .64036 .51714 .22602 .11895 1641 10.670 6.7851 .63589 .53102 .25975 .14159

0496 4.2917 2.9221 .68088 .77140 .48358 .18785 1646 9.0820 5.8573 .64493 .53206 .23180 .11909

0498 5.7000 4.3000 .75439 .81395 .53488 .16279 1663 17.250 9.3427 .54161 .27031 .02958 .04984

0509 12.557 7.7538 .61747 .47581 .20953 .12521 1671 12.366 7.7573 .62731 .47604 .19201 .10878

0518 11.371 7.0414 .61923 .47687 .19855 .11178 1680 12.364 7.3140 .59154 .45187 .19701 .11200

0521 10.000 5.0323 .50323 .29965 .06110 .04803 1694 10.310 6.4626 .62682 .46403 .14020 .04342

0556 12.207 6.9533 .56964 .42242 .17425 .08759 1696 11.121 7.0976 .63824 .53585 .26849 .14455

0569 12.144 7.6696 .63156 .48996 .20738 .11362 1697 9.2692 5.5962 .60374 .50530 .21871 .07797

0572 13.392 8.1398 .60780 .46411 .19216 .09287 1698 10.698 6.6112 .61800 .46683 .17791 .10104

0576 16.398 10.180 .62082 .45607 .18360 .10496 1720 10.599 7.2937 .68815 .56528 .23247 .08295

0580 11.862 7.0718 .59620 .45562 .19039 .09636 1761 15.465 9.2268 .59662 .40077 .13545 .09399

0587 14.342 8.4238 .58734 .46748 .23827 .15368 1773 11.929 7.1355 .59815 .45406 .19700 .11788

0605 11.960 6.8907 .57613 .43080 .19374 .14221 1810 16.059 10.426 .64927 .56023 .28813 .07421

0639 10.650 6.9718 .65462 .53059 .23176 .11777 1823 12.556 6.9412 .55284 .45115 .17055 .03025

0655 -- -- -- -- -- -- 1870 14.861 8.7166 .58656 .45313 .21922 .13473

0665 12.229 7.4602 .61006 .48433 .21864 .11498 1875 15.923 8.6667 .54428 .42926 .15734 .00314

0689 12.724 8.2720 .65009 .51697 .22699 .11308 1876 17.917 9.8357 .54897 .33763 .10991 .08237

0690 9.6113 6.3812 .66392 .54852 .23616 .11061 1889 19.866 12.034 .60578 .44375 .20932 .14142

0691 11.636 7.0959 .60983 .48864 .23004 .13140 1903 7.8980 5.1325 .64985 .55859 .25504 .12854

0708 9.6404 6.1066 .63344 .51560 .24042 .15750 1914 15.312 9.0875 .59347 .54726 .27914 .11662

0738 12.551 7.2820 .58021 .44712 .19999 .11382 1920 12.349 7.5198 .60893 .48607 .23772 .14987

0776 9.6259 6.0119 .62455 .50452 .21435 .10073 1921 12.042 7.1850 .59668 .46004 .20621 .11929

0779 8.9890 5.7655 .64140 .51217 .19357 .08560 1937 13.694 8.0085 .58484 .45073 .21322 .13280

0784 9.4047 6.0979 .64839 .54064 .24689 .12603 1956 13.044 7.9901 .61253 .46484 .20009 .12047

0786 11.449 7.0305 .61408 .47292 .19070 .09653 1970 17.632 12.532 .71078 .64865 .41231 .19116

0917 14.633 8.5140 .58183 .42756 .18149 .11014 2014 13.410 8.4774 .63215 .47712 .18731 .09479

0923 19.900 11.026 .55409 .38154 .20263 .13455 2015 14.644 9.2625 .63253 .47779 .20083 .11840

0926 11.800 7.0146 .59444 .44754 .18459 .10412 2019 21.875 13.892 .63505 .52292 .30879 .15432

0950 7.5000 4.3521 .58028 .57270 .25257 .02124 2024 11.969 7.2255 .60368 .45036 .17771 .09719

0996 20.941 13.191 .62992 .53177 .21771 .02753 2042 7.8000 5.2667 .67521 .56962 .18626 -.08017

1013 9.0390 6.3241 .69964 .62849 .33808 .18646 2043 8.9583 5.9435 .66346 .54535 .21173 .06781

1017 11.574 7.2173 .62355 .48748 .21398 .12488 2048 11.095 7.3230 .66003 .53271 .22977 .11049

1042 30.923 20.846 .67413 .62227 .37370 .20195 2050 15.093 10.054 .66617 .51662 .23528 .15589

1048 16.222 8.6144 .53102 .36381 .15042 .20049 2051 8.4828 5.4211 .63907 .56228 .26953 .09540

1053 12.508 7.7236 .61747 .48609 .21623 .11016 2053 13.000 7.8214 .60165 .29224 -.13242 -.09132

1057 11.748 6.9468 .59132 .46510 .20920 .11077 2073 12.455 7.4828 .60079 .44611 .16651 .07940

1063 23.400 13.333 .56980 .33495 .03571 -.06331 2082 8.5315 5.4703 .64119 .54585 .25696 .13511

1068 11.803 7.1442 .60530 .45764 .19036 .11361 2086 11.887 7.2922 .61345 .47027 .20167 .12059

1080 10.728 7.0786 .65979 .52393 .20579 .08729 2088 16.421 10.624 .64700 .48717 .22179 .17007

1081 12.878 7.5730 .58806 .46076 .21911 .13174 2090 11.021 7.1312 .64704 .54244 .28593 .19122

1133 13.929 9.3681 .67258 .51672 .18262 .00837 2096 11.906 7.1994 .60467 .46201 .20065 .11858

1136 15.661 10.039 .64103 .48526 .21017 .13154 2128 14.617 8.2094 .56165 .38767 .13832 .06659

1138 15.500 8.5330 .55051 .48294 .27150 .12726 2131 10.747 6.6878 .62232 .48375 .19885 .10747

1139 16.472 9.0520 .54953 .33817 .08551 .03357 2142 16.800 10.838 .64512 .64486 .43862 .23368

Appendix 4–3.5. L-moments of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
232 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 20.211 11.620 0.57494 0.26368 -0.09232 -0.10933 3463 11.810 7.1614 0.60641 0.47665 0.24077 0.18367

2206 12.484 7.5584 .60544 .46891 .19846 .10080 3476 12.050 7.3352 .60871 .48114 .21603 .11342

2238 13.303 8.3204 .62545 .48337 .21786 .13251 3485 16.941 9.1471 .53993 .43023 .21291 .01224

2240 14.000 8.5875 .61339 .41467 .13003 .10933 3507 11.354 7.2449 .63811 .49174 .19673 .11010

2242 13.488 7.8273 .58030 .41788 .16186 .08996 3546 12.980 7.8117 .60184 .45474 .20115 .12672

2244 13.128 7.9151 .60291 .44590 .18307 .11183 3547 10.022 6.3460 .63320 .52726 .25967 .15155

2247 16.683 9.7073 .58187 .42211 .17993 .11545 3579 15.161 9.2041 .60708 .46832 .21039 .13063

2309 13.393 8.0254 .59923 .46336 .21208 .11950 3642 12.230 7.2619 .59378 .45057 .19786 .11974

2312 12.103 7.2858 .60199 .45475 .20594 .14912 3646 12.132 7.0622 .58210 .46175 .21897 .12467

2334 11.302 6.1139 .54097 .27401 -.03246 -.03029 3668 21.000 12.550 .59762 .47268 .14813 -.00934

2336 9.9485 6.1370 .61688 .49881 .23316 .14565 3673 22.211 11.994 .54002 .25322 -.04848 -.06399

2354 13.227 8.4134 .63607 .49627 .21436 .12099 3686 11.181 6.9128 .61824 .47218 .19231 .11003

2355 18.615 12.406 .66645 .49796 .15783 .00604 3691 10.987 6.7033 .61011 .46277 .18334 .10048

2357 12.941 8.3516 .64538 .49752 .19284 .07851 3734 21.895 13.930 .63622 .46585 .18275 .04419

2360 13.049 8.1451 .62419 .47424 .19423 .10992 3771 10.927 6.7868 .62113 .45993 .15680 .07541

2361 10.974 7.2167 .65765 .53592 .23881 .12204 3789 11.643 8.2797 .71114 .61420 .32740 .19795

2394 12.643 7.3942 .58483 .44223 .19080 .10651 3826 11.283 6.6858 .59253 .48657 .24131 .13846

2404 11.853 7.0867 .59789 .44806 .18088 .09946 3831 12.979 7.8404 .60409 .45265 .17720 .08191

2415 12.579 7.2598 .57712 .44117 .20298 .12361 3841 9.4812 5.8167 .61350 .49394 .21323 .10923

2462 12.177 7.4686 .61333 .47615 .20816 .11265 3871 12.536 7.6051 .60665 .47609 .20846 .10478

2528 13.134 8.3636 .63679 .48493 .17912 .04957 3884 10.778 5.4183 .50273 .35706 .16466 .06303

2617 11.544 6.5881 .57069 .42534 .16317 .06374 3941 15.455 9.1030 .58902 .44492 .21828 .13191

2619 11.495 7.3095 .63589 .50823 .23549 .14091 3963 -- -- -- -- -- --

2621 10.531 6.5196 .61906 .48413 .19440 .09211 4040 10.416 6.2242 .59758 .48617 .23562 .14352

2675 11.851 7.3243 .61801 .48417 .22100 .14014 4058 16.333 9.9412 .60864 .45537 .13240 -.01603

2676 10.938 7.1817 .65658 .52898 .23391 .13271 4098 8.8108 5.6716 .64372 .53486 .23271 .11120

2679 10.794 6.9301 .64206 .51449 .22556 .12325 4100 10.548 6.2195 .58961 .45168 .19070 .10579

2715 11.261 6.5805 .58435 .45131 .19758 .11093 4137 10.396 6.3215 .60806 .45210 .16365 .09410

2744 10.727 6.8653 .63999 .53026 .25716 .14225 4191 11.568 7.2114 .62339 .48296 .19958 .10546

2758 13.809 9.0435 .65492 .53924 .25848 .12005 4256 -- -- -- -- -- --

2794 6.7273 3.9636 .58919 .51376 .30810 .29434 4257 12.313 7.4677 .60647 .45309 .18858 .11971

2797 10.632 6.6592 .62633 .49143 .19938 .09812 4258 15.597 9.6172 .61661 .42797 .14674 .09518

2811 10.962 7.0960 .64735 .52423 .23504 .12492 4278 11.069 6.6108 .59723 .47952 .22084 .11595

2813 10.048 6.9714 .69384 .62460 .36439 .22678 4299 7.3750 4.6705 .63329 .56243 .27171 .11505

2814 9.4000 6.6000 .70213 .57176 .17471 -.01699 4300 15.988 9.7143 .60761 .44803 .19426 .12553

2815 8.8667 5.5050 .62087 .49063 .18697 .08429 4305 16.785 10.023 .59717 .42283 .17126 .11385

2818 10.061 6.6029 .65631 .57960 .33656 .23534 4307 18.143 11.332 .62459 .45062 .19155 .13690

2986 14.723 8.6591 .58813 .43846 .18449 .09395 4309 13.007 7.8566 .60405 .46658 .20166 .10947

3005 10.522 6.4608 .61405 .47935 .20569 .11963 4311 13.434 8.1389 .60585 .46763 .20844 .11670

3033 7.5798 4.6221 .60980 .55363 .28719 .13021 4313 14.897 8.2952 .55685 .36733 .10359 .03650

3034 -- -- -- -- -- -- 4319 15.608 9.0250 .57822 .42461 .17597 .09380

3047 25.778 16.523 .64097 .51567 .26389 .13761 4329 13.044 7.9577 .61005 .46795 .20063 .10986

3103 9.6296 6.1083 .63432 .48541 .16558 .06357 4331 -- -- -- -- -- --

3133 12.441 7.3883 .59388 .45776 .20509 .11452 4375 10.078 6.5568 .65060 .53405 .24488 .13838

3156 13.216 8.2068 .62100 .47171 .20817 .13638 4392 15.501 8.9452 .57706 .42976 .19688 .13584

3171 12.250 7.2916 .59521 .45991 .20192 .10879 4425 9.1114 6.0490 .66389 .56464 .26590 .14009

3189 11.752 7.7108 .65614 .53475 .25589 .15680 4440 12.967 7.5227 .58013 .45541 .21038 .12397

3260 11.049 6.6298 .60004 .45034 .16876 .07770 4476 10.992 6.6660 .60644 .45708 .17887 .09952

3267 12.841 8.1392 .63385 .50193 .22157 .11226 4498 7.2727 4.7455 .65250 .59132 .27842 .01916

3270 8.5756 5.5107 .64260 .53332 .22991 .11526 4517 12.320 7.3858 .59950 .45528 .19207 .10602

3272 10.000 6.0662 .60662 .39055 .01766 -.06023 4520 10.559 6.5368 .61909 .45771 .15303 .07733

3277 10.692 7.1538 .66906 .53079 .21701 .12708 4525 26.444 19.176 .72516 .60395 .30138 .09228

3278 9.4272 6.1691 .65439 .57075 .29475 .15847 4563 10.520 7.0933 .67427 .66676 .52662 .46994

3280 7.9225 5.1187 .64610 .61101 .36389 .20705 4570 10.812 6.8129 .63014 .50258 .22402 .12740

3281 5.1905 3.4158 .65809 .67968 .40834 .23356 4577 12.201 7.4237 .60843 .46830 .21016 .13176

3283 14.636 8.7640 .59879 .44452 .19089 .11616 4591 14.049 8.1827 .58245 .44412 .20463 .12513

3284 12.170 7.4875 .61524 .47400 .20838 .12581 4670 10.600 6.5888 .62157 .48840 .20756 .11368

3285 11.026 6.8068 .61735 .46813 .18535 .10677 4671 12.410 7.8793 .63492 .48432 .20519 .12682

3329 12.824 7.7649 .60548 .45846 .19559 .11511 4679 11.457 7.0129 .61209 .45389 .17122 .09993

3335 13.874 7.9696 .57444 .42355 .18643 .12213 4696 13.400 9.5333 .71144 .55420 .14461 -.14161

3370 11.537 6.7435 .58452 .44814 .19061 .10387 4703 9.9417 6.3122 .63492 .51458 .24053 .16197

3410 10.210 6.3677 .62365 .49376 .21055 .11351 4704 15.654 9.1707 .58584 .42281 .18184 .12011

3415 11.189 6.8179 .60933 .46464 .19242 .11217 4731 15.760 8.8690 .56274 .35025 .12797 .14000

3430 14.709 8.9739 .61010 .45762 .20075 .12436 4792 10.384 6.5500 .63076 .49942 .21417 .12237

3431 19.168 12.059 .62913 .44575 .17833 .12640 4819 11.858 7.2036 .60750 .46095 .20176 .12980

3441 13.625 8.9355 .65582 .51002 .21830 .11279 4852 6.6667 4.7524 .71286 .66795 .28395 -.05788

3442 11.575 6.7861 .58626 .46534 .21266 .11047 4866 11.882 7.1922 .60530 .46688 .20438 .11735

3446 9.1163 5.6799 .62304 .53743 .27383 .14748 4876 11.800 7.3656 .62421 .47726 .19872 .11614

3460 14.516 8.2344 .56726 .37578 .15762 .16248 4878 15.023 8.8454 .58881 .43357 .18526 .11342

3462 12.492 7.2269 .57854 .43634 .18835 .09883 4880 10.568 6.6447 .62877 .51329 .23995 .12952

Appendix 4–3.5. L-moments of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 233

4920 10.804 6.8349 0.63263 0.50270 0.21827 0.11779 5957 10.375 6.4798 0.62457 0.49695 0.21859 0.12394

4934 8.6667 5.3333 .61538 .35000 -.12500 .00000 5958 13.248 7.8082 .58936 .43659 .16866 .08484

4972 11.399 6.9202 .60709 .46930 .20061 .10854 5973 15.129 9.0669 .59929 .47698 .25484 .17173

4973 12.682 7.1155 .56109 .42064 .18894 .12047 5996 11.742 7.1142 .60587 .46050 .19235 .10843

4974 11.283 7.0003 .62040 .50237 .24005 .13697 6017 10.357 6.5742 .63475 .52523 .24416 .12300

4975 11.219 6.8023 .60631 .45214 .17048 .08728 6024 14.651 8.2057 .56008 .37026 .14049 .10925

4978 11.333 7.4598 .65822 .55337 .30058 .21935 6050 9.3684 3.2807 .35019 .15445 .16876 .08362

4979 21.188 13.546 .63933 .58597 .32781 .09382 6104 12.373 8.2254 .66478 .54055 .24961 .13461

4982 10.886 6.3800 .58609 .45327 .18982 .10078 6108 11.953 7.2336 .60517 .45861 .19487 .11645

5018 11.857 6.8753 .57983 .46287 .21034 .10986 6136 9.5296 6.1579 .64619 .52795 .22496 .10634

5048 9.3828 6.0250 .64213 .52723 .23061 .11810 6166 11.532 6.6709 .57844 .39874 .10479 .03466

5049 6.3068 3.8593 .61193 .53462 .24436 .15209 6176 13.666 8.1366 .59541 .45553 .22281 .16775

5056 10.000 5.1000 .51000 .09804 -.27451 -.58824 6177 12.395 7.6080 .61379 .47643 .21532 .13021

5057 13.891 8.8604 .63788 .48774 .20271 .10820 6210 11.223 6.7907 .60506 .45627 .17749 .08783

5060 14.774 9.6120 .65061 .53306 .27126 .16789 6211 15.604 9.7919 .62751 .47012 .20255 .12824

5081 15.081 8.5740 .56853 .42259 .19576 .12337 6270 12.185 7.3358 .60201 .44513 .18098 .11328

5094 11.162 6.7864 .60797 .46191 .18968 .11203 6275 -- -- -- -- -- --

5113 12.114 7.6350 .63028 .49009 .20973 .11662 6276 16.250 9.8079 .60356 .42706 .12420 -.00234

5114 -- -- -- -- -- -- 6335 12.498 7.2461 .57980 .44627 .20199 .11606

5123 8.3571 4.9945 .59763 .46755 .16192 .02790 6434 12.882 5.9853 .46461 .33071 .10881 -.02344

5192 11.334 6.7381 .59448 .44652 .17547 .08931 6504 9.9856 6.3534 .63626 .50733 .20975 .10457

5193 12.761 7.7790 .60960 .46099 .19248 .10973 6558 14.739 8.3755 .56825 .28551 -.04760 -.05733

5224 13.571 8.3027 .61178 .47427 .23143 .15942 6615 9.3015 6.1263 .65864 .55013 .24585 .12100

5228 11.669 7.5193 .64436 .52485 .25427 .15193 6660 16.388 9.6485 .58874 .39485 .10848 .01876

5235 17.478 9.5375 .54568 .24670 -.03499 -.00619 6663 17.913 10.529 .58778 .34686 .04890 .02044

5247 10.017 6.3020 .62916 .51079 .23153 .12854 6734 11.586 7.0088 .60495 .46869 .20494 .12251

5258 12.589 7.3235 .58173 .44233 .19572 .11568 6736 9.1234 5.8650 .64286 .53656 .24189 .11758

5303 12.372 7.4916 .60552 .48189 .21103 .10172 6740 24.500 16.348 .66729 .55885 .34322 .28962

5312 9.7376 6.3418 .65126 .54047 .24921 .13412 6750 15.767 10.366 .65743 .47896 .16423 .08112

5341 19.105 13.485 .70585 .63257 .38026 .20313 6757 13.311 8.0450 .60438 .46065 .20691 .12728

5342 -- -- -- -- -- -- 6775 12.266 7.3348 .59797 .44578 .17553 .09675

5348 11.969 7.3131 .61101 .47085 .21352 .13984 6776 10.180 6.4484 .63343 .51288 .22881 .12137

5358 10.387 6.3356 .60993 .50038 .23631 .11887 6788 11.325 6.0543 .53462 .39496 .15745 .07440

5398 13.937 8.2359 .59096 .45317 .20783 .12594 6792 8.3521 5.4653 .65436 .56214 .25861 .12097

5410 9.3143 5.9973 .64388 .53637 .24203 .11710 6794 29.438 16.387 .55669 .37104 .16245 .07747

5411 12.536 7.7249 .61620 .47501 .20602 .11803 6834 10.925 6.6520 .60887 .46146 .18429 .10501

5424 20.407 12.860 .63018 .46670 .21592 .13863 6893 7.8534 5.2235 .66513 .59639 .30935 .17560

5429 13.018 8.0050 .61491 .47106 .19899 .10966 6935 9.1327 5.9193 .64815 .54241 .24444 .11806

5431 17.357 8.3571 .48148 .24129 .13095 .19945 6981 12.709 7.7909 .61303 .47983 .20836 .11622

5461 12.804 7.7440 .60482 .48375 .23517 .13510 7020 16.047 9.2717 .57780 .41544 .16942 .08883

5463 10.404 6.4464 .61960 .47325 .17741 .08599 7060 9.5178 6.1032 .64125 .52259 .22435 .11212

5471 14.000 9.1583 .65417 .41531 -.00786 -.10299 7066 12.667 7.4815 .59064 .44528 .19342 .11518

5477 17.294 14.000 .80952 .76324 .56242 .44877 7074 9.1268 5.8966 .64607 .54499 .25542 .13044

5528 10.907 6.4131 .58799 .45012 .18162 .08637 7097 12.837 7.6394 .59511 .44219 .18765 .12534

5579 -- -- -- -- -- -- 7116 11.158 6.6425 .59532 .45719 .18605 .09492

5580 15.400 9.3737 .60868 .41475 .05374 -.09682 7140 12.472 7.8016 .62551 .49039 .21551 .11851

5589 9.2128 5.8220 .63195 .51389 .21786 .10729 7173 16.616 10.139 .61017 .43198 .15664 .08542

5590 11.652 7.2855 .62523 .49180 .20053 .09088 7174 16.091 9.7324 .60482 .44207 .18983 .12500

5591 9.8899 6.2736 .63435 .53946 .26156 .12852 7213 12.635 7.8278 .61952 .48701 .21860 .12234

5592 10.154 6.5552 .64561 .56576 .29610 .15840 7243 11.035 6.9090 .62609 .48494 .19861 .10866

5594 7.1391 4.5727 .64052 .59981 .31444 .12687 7262 9.5375 6.8983 .72328 .64447 .32687 .14005

5595 -- -- -- -- -- -- 7274 9.3316 5.5965 .59973 .48421 .22894 .14029

5596 9.5766 6.4120 .66955 .55581 .24011 .11202 7300 10.345 6.1857 .59794 .47529 .21297 .11773

5600 11.222 7.6129 .67840 .60243 .32779 .16538 7311 9.5600 5.9000 .61715 .46824 .15422 .03007

5618 17.458 10.857 .62187 .52578 .31368 .24785 7363 20.824 13.860 .66561 .55438 .29663 .14813

5650 10.294 4.8971 .47571 .41141 .36208 .27166 7422 12.262 7.6803 .62634 .48639 .21234 .12427

5656 9.6841 6.2338 .64372 .51037 .19783 .09179 7431 9.0284 5.6451 .62525 .52446 .24902 .13558

5658 11.171 6.7868 .60756 .49534 .23488 .12393 7481 8.8917 5.7597 .64776 .56362 .28645 .15445

5661 11.718 8.0225 .68461 .56307 .25962 .13942 7497 11.302 7.1314 .63097 .48811 .20692 .13142

5666 12.929 8.2751 .64007 .48374 .16948 .05415 7498 10.686 6.7921 .63562 .49061 .19036 .10226

5695 11.846 7.1720 .60545 .46384 .20158 .11979 7499 10.545 6.6032 .62616 .48500 .19476 .10668

5742 16.929 10.005 .59104 .41571 .25116 .34232 7531 14.172 8.5810 .60547 .45296 .17125 .05605

5766 15.652 5.9209 .37828 .09079 .11644 .15491 7534 11.026 6.9357 .62905 .50279 .22619 .12610

5770 10.615 6.5445 .61655 .47665 .19155 .09914 7556 10.520 6.4537 .61344 .46503 .17405 .08587

5775 5.0833 2.8712 .56483 .48496 .17678 .04661 7594 12.071 7.4299 .61553 .48885 .22238 .11767

5779 13.667 8.6928 .63606 .49173 .23684 .16165 7596 10.047 6.1114 .60826 .48662 .20881 .10284

5840 12.410 7.2758 .58631 .45424 .19667 .09726 7608 12.081 7.3928 .61192 .46622 .19665 .11310

5890 11.356 7.0317 .61922 .48962 .21576 .11716 7622 9.0000 5.9591 .66212 .53253 .17941 .03005

5891 8.7552 5.3529 .61139 .51399 .24941 .14694 7700 14.887 8.6210 .57910 .42683 .18144 .10529

5897 11.324 6.9615 .61477 .45086 .15783 .08570 7706 11.165 7.0297 .62962 .49423 .21017 .11435

Appendix 4–3.5. L-moments of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
234 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 15.051 9.0990 0.60456 0.41791 0.14201 0.08764 8910 11.588 6.8750 0.59327 0.56021 0.35966 0.21440

7745 16.947 9.7098 .57295 .38740 .14776 .10142 8911 11.212 6.9752 .62213 .48568 .20385 .10457

7922 8.1495 5.3287 .65387 .57373 .28099 .13946 8924 7.8724 4.9544 .62933 .55288 .25712 .09249

7936 12.546 7.6069 .60633 .46802 .21507 .13674 8929 26.929 20.984 .77923 .68002 .43226 .29477

7943 11.609 7.2055 .62069 .49609 .22564 .12138 8942 12.341 7.4937 .60721 .45560 .19426 .12535

7944 17.035 10.305 .60490 .40934 .13139 .07348 8944 12.883 7.8341 .60812 .45880 .19208 .10571

7945 15.678 9.5691 .61035 .44861 .18940 .12132 8996 13.363 8.1353 .60880 .47233 .20915 .11682

7947 13.574 8.7482 .64446 .49820 .21516 .11706 9014 18.353 10.338 .56330 .41081 .16196 .02353

7948 11.602 7.3153 .63051 .49711 .21565 .11470 9037 9.5627 6.0650 .63424 .54407 .27752 .15573

7951 12.669 7.4117 .58501 .45481 .21349 .13005 9106 11.536 7.3645 .63839 .52643 .25699 .15264

7953 15.146 9.9833 .65915 .53109 .23259 .09466 9107 7.8387 5.9484 .75885 .76363 .52256 .32725

7981 12.394 8.0327 .64813 .51663 .22713 .10961 9129 14.200 9.5465 .67229 .53922 .24310 .11581

7990 17.777 11.964 .67301 .54560 .27928 .16584 9163 11.235 6.9136 .61538 .48020 .20649 .11435

7992 17.765 9.5956 .54015 .33916 .00591 -.12838 9213 15.708 10.259 .65309 .51590 .26165 .17890

7997 11.457 7.0318 .61378 .50118 .24340 .12953 9214 18.045 13.292 .73660 .73845 .52755 .32715

7999 9.4375 5.9792 .63355 .50443 .21170 .09768 9222 16.945 9.1370 .53920 .34547 .13866 .11214

8022 13.370 8.7904 .65745 .51438 .20501 .09074 9248 12.477 7.7925 .62456 .45607 .15670 .08480

8023 9.5256 6.1114 .64157 .53520 .24832 .13065 9266 11.478 6.5369 .56953 .43889 .18883 .09941

8047 11.328 6.9934 .61733 .47871 .20427 .11514 9270 9.9557 6.5797 .66090 .54883 .24776 .12389

8060 13.566 8.8365 .65137 .53346 .26324 .15199 9295 9.1333 5.8881 .64469 .52676 .22887 .12321

8062 16.273 10.019 .61569 .41520 .09774 .04190 9304 -- -- -- -- -- --

8068 11.167 6.7046 .60041 .41412 .11508 .06177 9307 11.004 6.6406 .60344 .46081 .17252 .05805

8081 12.168 7.7215 .63455 .49898 .21799 .11861 9328 12.429 8.2136 .66086 .54600 .27426 .16788

8089 9.4324 5.6772 .60188 .48552 .21686 .11210 9329 23.200 14.578 .62835 .41044 .11776 .02325

8221 17.941 11.603 .64672 .57643 .34148 .11446 9345 -- -- -- -- -- --

8252 9.8632 6.2475 .63342 .51780 .22922 .11232 9363 15.862 9.9730 .62874 .46986 .20489 .13774

8265 15.549 9.0038 .57905 .42187 .17269 .10176 9364 14.681 9.2253 .62838 .47158 .19317 .10960

8289 10.125 6.2917 .62140 .47697 .16907 .05326 9365 17.000 10.763 .63311 .47589 .13777 -.03606

8305 8.7845 5.7445 .65394 .55917 .26150 .12629 9371 13.587 8.0028 .58901 .38755 .09047 .03146

8335 13.654 7.9388 .58141 .43978 .20163 .12286 9417 12.285 7.3039 .59454 .45731 .20173 .11523

8400 10.235 6.6819 .65285 .51484 .19412 .08435 9419 14.409 8.5726 .59494 .43934 .18248 .10639

8445 13.729 8.1083 .59060 .44511 .18867 .10394 9435 10.433 6.8308 .65474 .53743 .22737 .07399

8446 11.657 7.0966 .60880 .45548 .17433 .08946 9491 12.930 7.8306 .60560 .45977 .19601 .11272

8451 11.473 6.9661 .60717 .47035 .17588 .05251 9499 9.5013 6.1025 .64228 .52449 .22645 .11268

8531 12.315 7.4365 .60385 .46901 .20713 .11639 9522 36.125 24.518 .67870 .57465 .26438 -.04734

8541 11.154 6.5871 .59056 .50379 .25223 .12803 9527 9.7404 6.2820 .64494 .52292 .22156 .10871

8544 12.677 7.8834 .62184 .49802 .24030 .13957 9532 10.972 6.7231 .61273 .47697 .20593 .11665

8545 17.400 10.381 .59661 .37177 .10056 .07533 9544 -- -- -- -- -- --

8563 10.470 6.2365 .59563 .44154 .16987 .10136 9565 9.9437 6.2214 .62566 .51407 .24212 .13673

8566 9.9701 6.3856 .64047 .53192 .25129 .13562 9570 9.6611 6.2092 .64270 .50224 .17467 .05716

8583 10.552 6.5574 .62142 .46484 .16461 .08727 9574 9.4211 6.0000 .63687 .49708 .19268 .12053

8584 11.169 7.1139 .63694 .50632 .21639 .10452 9588 13.015 8.6633 .66565 .53640 .24914 .14035

8623 11.128 6.9530 .62480 .49244 .21709 .12320 9665 12.234 7.5131 .61411 .47732 .21161 .12060

8625 13.040 7.5508 .57904 .44525 .19797 .11135 9715 11.386 6.7903 .59635 .45598 .19573 .11444

8630 9.1485 5.5719 .60905 .49569 .22094 .11655 9729 12.896 7.5710 .58707 .43873 .18718 .11361

8631 11.369 7.0896 .62359 .51333 .24988 .13550 9772 13.183 8.2360 .62475 .49124 .22614 .13671

8646 11.641 6.8976 .59251 .46412 .21048 .11773 9814 11.438 6.4798 .56654 .44001 .19640 .13243

8647 10.091 6.3572 .62999 .49478 .20302 .11355 9815 13.646 8.3474 .61172 .48574 .24360 .15802

8677 14.119 8.1836 .57964 .45759 .22090 .13158 9816 9.8000 5.9437 .60651 .44662 .13025 .02419

8696 15.947 9.1287 .57242 .41003 .13427 -.03293 9817 10.030 6.2557 .62371 .49728 .21726 .12438

8743 12.671 7.5364 .59475 .45306 .20181 .12123 9829 9.5047 6.1166 .64354 .53440 .24177 .11916

8761 9.3867 5.9984 .63903 .51678 .21424 .10348 9830 9.0148 5.5007 .61019 .49574 .22221 .11994

8778 11.929 7.2153 .60484 .45582 .19151 .11588 9858 9.5671 5.7744 .60357 .50431 .24530 .12799

8845 13.021 8.1647 .62706 .47903 .20827 .13126 9893 11.073 6.8743 .62083 .49557 .22751 .13043

8859 13.540 8.1551 .60229 .46482 .20978 .11692 9916 11.724 6.7567 .57631 .41526 .16612 .10779

8898 12.966 7.3651 .56805 .42528 .17733 .09607 9976 11.400 7.2990 .64029 .51094 .22545 .11991

8908 13.533 7.5655 .55903 .35999 .11772 .10520

Appendix 4–3.5. L-moments of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 235

Appendix 4–3.6. L-moments of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0015 -- -- -- -- -- -- 1154 42.454 26.289 0.61925 0.41872 0.16947 0.10917

0016 23.594 14.790 0.62687 0.45490 0.19034 0.11436 1165 21.767 14.069 .64635 .48659 .21067 .11679

0050 21.653 13.591 .62769 .47702 .22471 .13412 1185 10.835 7.5291 .69485 .61770 .34924 .20925

0054 28.484 19.587 .68766 .59059 .39242 .31861 1186 33.431 22.305 .66719 .51231 .25986 .17895

0120 52.727 33.764 .64034 .52001 .25328 .02154 1188 31.333 23.200 .74043 .64799 .43247 .16523

0145 27.309 17.148 .62793 .42585 .16990 .13765 1245 54.833 37.318 .68057 .57142 .40777 .35296

0146 34.222 21.083 .61605 .40518 .02576 -.13197 1246 23.955 14.810 .61827 .41697 .14850 .09806

0174 22.276 15.151 .68014 .51379 .22439 .13829 1267 21.760 14.303 .65728 .49751 .21168 .10170

0178 38.500 26.522 .68889 .49267 .24831 .33305 1304 23.200 14.595 .62910 .45377 .17362 .07836

0179 24.020 16.991 .70736 .57120 .28900 .16276 1325 23.008 14.314 .62211 .45263 .19441 .12450

0202 19.201 13.108 .68265 .51881 .21010 .09651 1429 21.490 13.957 .64948 .48183 .19595 .09941

0206 20.149 13.063 .64832 .47438 .18184 .08635 1431 23.571 14.964 .63485 .47053 .20358 .11953

0208 -- -- -- -- -- -- 1432 22.563 14.314 .63439 .46538 .19481 .11420

0211 24.015 14.978 .62370 .44219 .16759 .09015 1433 22.373 13.765 .61527 .44199 .17761 .10404

0244 31.720 19.952 .62900 .46128 .20774 .13481 1434 22.226 13.891 .62499 .45566 .18541 .10191

0248 15.887 10.645 .67004 .52145 .22016 .10083 1435 20.442 13.017 .63675 .46835 .19649 .11734

0262 22.060 14.046 .63674 .48767 .22725 .13021 1436 23.413 14.408 .61539 .45001 .18540 .10236

0271 46.700 27.789 .59505 .26989 -.11070 -.05078 1437 16.368 12.082 .73812 .70827 .52138 .43164

0380 19.903 12.707 .63842 .46772 .17304 .06688 1438 21.672 13.535 .62456 .45372 .18291 .10319

0394 34.667 19.800 .57115 .33165 .03199 -.21044 1462 -- -- -- -- -- --

0408 65.500 47.411 .72383 .54347 .21574 .13124 1492 17.429 11.593 .66515 .50653 .21357 .11785

0427 33.485 20.123 .60096 .32101 .04009 .08874 1500 46.538 33.231 .71405 .63173 .44487 .40816

0428 29.868 18.443 .61748 .43094 .17612 .11155 1528 18.015 11.869 .65886 .49554 .20077 .10288

0429 32.393 20.093 .62030 .42940 .15474 .05904 1541 23.825 14.699 .61697 .43044 .21104 .21809

0463 17.558 12.687 .72257 .61642 .35442 .24274 1569 28.273 17.671 .62502 .41710 .11829 .03501

0493 35.600 22.111 .62110 .42286 .16098 .02588 1632 -- -- -- -- -- --

0495 17.224 11.475 .66620 .51041 .21011 .09703 1641 18.181 11.606 .63836 .47373 .19700 .11768

0496 7.0909 5.5195 .77839 .81035 .56495 .29946 1646 17.176 11.497 .66937 .50770 .20293 .09627

0498 11.444 8.6389 .75485 .63160 .20303 -.13689 1663 26.111 16.946 .64899 .44837 .17090 .13961

0509 22.262 14.230 .63921 .46944 .19858 .11568 1671 22.137 14.251 .64379 .46305 .17947 .10083

0518 22.151 14.413 .65065 .48480 .20659 .11370 1680 20.628 12.591 .61040 .43148 .16303 .08575

0521 17.111 10.516 .61455 .48198 .25817 .17819 1694 18.000 11.830 .65721 .48290 .18886 .11515

0556 19.200 12.257 .63837 .50306 .24736 .13797 1696 18.567 12.232 .65880 .50313 .20366 .08271

0569 24.764 16.156 .65239 .47688 .19421 .10755 1697 11.595 7.1000 .61235 .48050 .17764 .04184

0572 23.846 15.443 .64758 .49302 .23105 .14823 1698 19.941 12.597 .63172 .44666 .16656 .09739

0576 27.723 18.014 .64980 .46184 .17213 .09197 1720 20.641 14.350 .69522 .52982 .22727 .14232

0580 20.711 12.620 .60937 .41450 .12291 .04546 1761 35.900 22.790 .63483 .39813 .08771 .02532

0587 26.748 16.697 .62425 .47441 .21631 .11633 1773 23.483 14.969 .63745 .46733 .19294 .10039

0605 22.744 14.306 .62902 .46071 .18087 .07342 1810 39.583 28.417 .71789 .58006 .24376 -.00355

0639 20.976 14.080 .67121 .50367 .21138 .12124 1823 40.909 28.309 .69200 .54014 .22875 .05620

0655 -- -- -- -- -- -- 1870 26.628 16.573 .62237 .46238 .20652 .12283

0665 21.570 13.880 .64347 .48331 .20285 .10411 1875 27.000 15.564 .57643 .46495 .26305 .18789

0689 20.894 13.888 .66469 .49653 .20119 .10289 1876 25.062 13.333 .53198 .31335 .10722 .06525

0690 18.078 12.475 .69005 .53707 .23398 .12163 1889 37.026 23.870 .64469 .47403 .21473 .13262

0691 21.762 13.786 .63347 .46928 .19645 .10951 1903 15.933 10.455 .65619 .48226 .16815 .07247

0708 25.939 17.021 .65620 .47069 .17854 .08700 1914 48.400 26.756 .55280 .27284 .03684 .12708

0738 22.371 13.963 .62417 .47394 .21234 .11518 1920 19.613 12.566 .64071 .48927 .22087 .12482

0776 16.372 10.940 .66822 .52220 .22476 .10512 1921 22.323 14.331 .64197 .48404 .21219 .11136

0779 17.111 11.542 .67451 .51607 .21311 .10524 1937 23.345 14.575 .62434 .47585 .22125 .12440

0784 17.941 11.923 .66457 .49950 .19528 .08885 1956 26.007 16.776 .64507 .47520 .20278 .11253

0786 19.979 12.429 .62211 .44211 .16239 .08499 1970 65.400 50.200 .76758 .64841 .38650 .29405

0917 27.154 16.786 .61818 .44880 .19246 .11121 2014 28.630 17.994 .62850 .42864 .16644 .12977

0923 72.000 52.156 .72438 .59086 .39018 .41170 2015 28.493 18.262 .64092 .45594 .18582 .11683

0926 21.491 13.681 .63659 .47258 .19955 .10719 2019 51.800 33.911 .65465 .37058 .01727 .03670

0950 26.148 16.909 .64666 .43714 .09147 -.00216 2024 20.458 13.186 .64452 .48163 .20550 .11131

0996 77.875 54.268 .69686 .49325 .18723 .19842 2042 13.444 9.1944 .68388 .48986 .08718 -.03884

1013 18.083 12.702 .70242 .55775 .26031 .15339 2043 14.565 9.3942 .64501 .45079 .11274 .02286

1017 20.383 13.084 .64188 .47043 .18744 .09875 2048 20.595 13.603 .66051 .48146 .18261 .09825

1042 75.286 42.762 .56799 .37149 .04009 .16258 2050 17.135 11.709 .68337 .53213 .23659 .12782

1048 47.091 35.655 .75714 .69199 .53510 .54139 2051 14.471 10.093 .69745 .56545 .23780 .06070

1053 21.098 13.275 .62921 .44179 .14484 .05369 2053 27.667 14.933 .53976 .09821 -.07143 .53571

1057 20.824 13.250 .63628 .48450 .21329 .10925 2073 22.818 14.351 .62894 .45461 .18304 .10509

1063 54.900 32.767 .59684 .18922 -.25272 -.15395 2082 15.151 10.324 .68138 .54866 .25595 .13264

1068 21.160 13.650 .64511 .47903 .20065 .10811 2086 21.089 13.492 .63978 .47281 .19744 .10843

1080 21.287 14.577 .68480 .53060 .25821 .18631 2088 25.531 15.463 .60564 .41848 .19260 .17654

1081 22.562 14.179 .62845 .47586 .21431 .11859 2090 20.815 13.722 .65923 .49520 .20140 .09167

1133 27.273 16.600 .60867 .37788 .14567 .21176 2096 21.890 13.800 .63044 .45982 .19117 .11003

1136 29.839 19.192 .64319 .45601 .18323 .11175 2128 22.465 13.387 .59590 .41538 .15835 .08329

1138 42.000 30.389 .72354 .61191 .34709 .16218 2131 20.129 13.042 .64792 .48556 .21327 .13033

1139 30.527 18.012 .59003 .39525 .15882 .11098 2142 54.750 23.786 .43444 -.11712 -.23273 .22973

Appendix 4–3.6. L-moments of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
236 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 34.533 21.629 0.62631 0.39667 0.12949 0.11788 3463 21.457 14.664 0.68340 0.55645 0.29859 0.18304

2206 23.846 15.650 .65630 .50404 .23507 .14201 3476 21.923 14.475 .66027 .50745 .22484 .11768

2238 23.152 14.557 .62879 .45106 .18788 .12159 3485 26.429 17.484 .66154 .61942 .40703 .16585

2240 29.509 17.918 .60720 .36240 .06917 .02537 3507 23.303 15.319 .65736 .48624 .20688 .12021

2242 25.191 15.535 .61669 .44942 .20138 .12924 3546 24.460 15.424 .63060 .45904 .19344 .11167

2244 24.373 15.464 .63449 .45955 .18976 .10797 3547 18.444 11.816 .64065 .45916 .16387 .08279

2247 32.194 20.865 .64810 .51078 .25058 .11919 3579 26.373 15.549 .58959 .37488 .10414 .07759

2309 24.046 15.155 .63022 .44872 .16036 .06433 3642 22.204 14.118 .63582 .47494 .20796 .11595

2312 23.098 14.286 .61847 .44405 .18688 .11187 3646 21.142 13.215 .62505 .47700 .21605 .11697

2334 20.295 11.645 .57379 .32855 .06990 .06035 3668 76.000 41.179 .54182 .22897 .06158 .37467

2336 19.494 13.184 .67633 .53069 .24597 .13249 3673 65.100 50.411 .77436 .69925 .51156 .41250

2354 22.833 16.703 .73150 .58066 .24638 .08614 3686 22.524 14.157 .62856 .44660 .17829 .11276

2355 28.152 16.379 .58181 .30362 -.00896 -.02571 3691 21.139 13.760 .65091 .49119 .22021 .13310

2357 25.195 16.023 .63598 .42941 .13325 .06981 3734 67.900 52.256 .76960 .65448 .43167 .34999

2360 22.425 14.554 .64899 .47813 .19827 .11406 3771 22.347 14.078 .62998 .43214 .14739 .08235

2361 19.016 13.472 .70845 .58382 .31060 .19652 3789 23.388 16.358 .69943 .52970 .21381 .08946

2394 23.714 14.705 .62010 .45384 .19184 .10692 3826 19.088 12.008 .62909 .50069 .25176 .15722

2404 21.474 13.627 .63458 .47214 .20743 .12387 3831 21.487 13.646 .63508 .44207 .13237 .03442

2415 23.060 14.392 .62413 .46482 .20160 .11001 3841 19.385 12.605 .65023 .47540 .17470 .07085

2462 22.413 14.742 .65774 .51310 .25274 .15707 3871 20.906 13.141 .62860 .45880 .17698 .08656

2528 21.217 12.984 .61197 .38396 .06608 -.00019 3884 29.077 17.744 .61023 .40003 .08671 -.01594

2617 20.972 12.730 .60698 .42591 .14934 .07259 3941 24.617 15.492 .62933 .45627 .19820 .12795

2619 18.155 11.859 .65322 .48863 .19822 .10187 3963 -- -- -- -- -- --

2621 18.416 12.031 .65327 .48975 .19381 .08836 4040 19.315 12.425 .64331 .49225 .22266 .13188

2675 22.380 14.752 .65913 .50579 .23619 .14033 4058 37.917 30.841 .81339 .75986 .51249 .23966

2676 24.405 15.685 .64271 .44516 .15766 .09766 4098 16.833 11.446 .67996 .53283 .23480 .11864

2679 19.859 12.974 .65331 .48058 .18943 .10263 4100 19.972 13.031 .65248 .49935 .21570 .09921

2715 20.189 12.761 .63208 .48018 .21134 .11235 4137 21.316 13.772 .64609 .47837 .20806 .13029

2744 18.443 12.116 .65694 .49796 .20327 .09384 4191 20.473 13.145 .64209 .46739 .18079 .09450

2758 28.653 17.925 .62561 .41375 .10429 .01916 4256 -- -- -- -- -- --

2794 11.200 7.4000 .66071 .53378 .26158 .16592 4257 22.868 14.747 .64489 .47947 .21123 .12512

2797 20.241 13.335 .65881 .49988 .21603 .11781 4258 29.429 19.747 .67101 .50445 .22075 .10386

2811 19.245 12.861 .66829 .50570 .20809 .10317 4278 20.180 13.087 .64850 .49523 .21018 .09909

2813 14.579 9.9474 .68231 .53128 .19299 .01076 4299 12.610 8.3839 .66486 .54907 .25303 .10030

2814 27.700 18.589 .67108 .36312 -.13590 -.26270 4300 33.265 20.844 .62661 .44759 .19499 .12572

2815 17.330 11.327 .65360 .47916 .16909 .06664 4305 33.556 21.205 .63193 .45947 .20563 .12299

2818 16.958 11.808 .69634 .56980 .28237 .14918 4307 32.704 20.809 .63630 .46210 .21566 .14498

2986 25.547 16.083 .62955 .46691 .20954 .12812 4309 24.948 15.832 .63460 .46507 .19074 .10278

3005 20.079 13.216 .65820 .49898 .21624 .11640 4311 24.943 15.834 .63482 .46474 .18997 .10015

3033 15.348 10.485 .68317 .56669 .26761 .10681 4313 26.947 15.263 .56642 .37490 .14474 .09439

3034 -- -- -- -- -- -- 4319 26.617 16.525 .62086 .46717 .20319 .10207

3047 62.364 43.218 .69300 .56920 .41909 .42175 4329 23.853 15.204 .63740 .47080 .19957 .10848

3103 13.320 9.3133 .69920 .56572 .25283 .13083 4331 -- -- -- -- -- --

3133 21.607 13.744 .63609 .48129 .21471 .11822 4375 20.058 13.367 .66643 .50097 .21051 .11734

3156 21.579 13.633 .63178 .45498 .18197 .10342 4392 28.258 17.207 .60892 .42353 .15826 .07932

3171 21.291 13.324 .62583 .45981 .18786 .09735 4425 15.667 10.970 .70021 .56799 .26801 .13799

3189 21.262 14.411 .67778 .51329 .22063 .12781 4440 21.803 13.320 .61093 .45168 .18928 .10404

3260 19.933 13.468 .67565 .53816 .26553 .15218 4476 20.779 12.959 .62366 .44278 .16787 .09166

3267 25.087 15.321 .61073 .42415 .15945 .09792 4498 12.889 8.5000 .65948 .46032 .05696 -.08870

3270 17.237 11.627 .67455 .52318 .23082 .12758 4517 21.664 13.868 .64015 .47557 .19978 .10648

3272 32.167 22.212 .69053 .49332 .19259 .15223 4520 20.564 13.175 .64068 .46112 .18783 .12726

3277 14.000 8.9091 .63636 .40612 .04082 -.00340 4525 56.000 44.591 .79627 .68277 .43969 .32909

3278 17.706 12.348 .69742 .57216 .28981 .16393 4563 37.933 27.600 .72759 .57276 .22480 -.00589

3280 14.363 10.133 .70546 .59435 .28710 .10871 4570 19.093 12.448 .65197 .48582 .19660 .10006

3281 9.3684 7.2063 .76921 .75339 .51084 .31948 4577 23.292 15.254 .65493 .49760 .22367 .12121

3283 27.442 17.215 .62730 .45024 .18410 .10218 4591 24.219 15.497 .63985 .49051 .22447 .11780

3284 22.607 14.647 .64791 .48727 .22074 .13416 4670 19.712 12.744 .64649 .47174 .17896 .08728

3285 21.145 13.744 .64997 .48358 .20847 .12411 4671 24.111 15.368 .63738 .44172 .16339 .10377

3329 22.426 13.920 .62073 .43724 .16345 .08831 4679 22.130 14.318 .64701 .47674 .20230 .12097

3335 21.207 12.565 .59251 .42733 .19032 .12439 4696 33.429 16.238 .48575 .14252 .11437 .33138

3370 20.443 13.121 .64185 .49629 .23233 .13675 4703 23.848 15.521 .65082 .46518 .17575 .09600

3410 18.980 12.420 .65438 .49140 .20237 .10288 4704 26.391 15.715 .59547 .42370 .19445 .13093

3415 21.751 14.092 .64789 .48308 .20658 .11278 4731 27.372 17.535 .64063 .46060 .20373 .13682

3430 28.710 17.992 .62667 .44794 .18688 .11175 4792 21.473 14.359 .66872 .50431 .21378 .11322

3431 40.276 25.262 .62723 .44326 .21351 .16292 4819 25.467 16.337 .64150 .46466 .18415 .08766

3441 27.640 18.613 .67342 .48100 .15594 .01696 4852 20.273 16.855 .83139 .74685 .43995 .13754

3442 18.851 11.428 .60627 .44656 .17513 .07594 4866 21.490 13.667 .63594 .46882 .19515 .10691

3446 15.422 10.150 .65813 .51641 .21406 .07566 4876 21.697 13.722 .63246 .46306 .20590 .13335

3460 21.519 13.692 .63630 .49225 .27231 .21054 4878 28.254 17.591 .62261 .44466 .17646 .09131

3462 21.178 14.045 .66318 .53765 .27993 .15810 4880 19.361 12.677 .65476 .49797 .21344 .11021

Appendix 4–3.6. L-moments of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 237

4920 18.591 12.140 0.65301 0.48583 0.19195 0.09434 5957 19.618 12.851 0.65506 0.49295 0.20706 0.10741

4934 16.400 13.000 .79268 .64615 .15385 -.43077 5958 22.478 14.184 .63103 .46781 .19623 .10362

4972 20.218 12.818 .63401 .46671 .18964 .09895 5973 25.129 15.749 .62673 .44468 .16962 .07464

4973 22.548 14.359 .63682 .51997 .28896 .19024 5996 21.722 13.861 .63811 .46755 .18865 .09626

4974 19.571 12.590 .64327 .47442 .17955 .07472 6017 25.202 16.393 .65044 .45880 .15219 .05695

4975 22.155 13.866 .62588 .44977 .18654 .11680 6024 22.492 13.127 .58364 .40970 .18650 .11948

4978 18.548 12.273 .66168 .50672 .21800 .10417 6050 14.647 7.5956 .51857 .46680 .37782 .25616

4979 77.375 43.589 .56335 .24867 .01270 .24293 6104 26.305 17.965 .68296 .51912 .22856 .12220

4982 18.865 11.912 .63141 .47724 .20160 .09937 6108 22.439 14.367 .64026 .47022 .19707 .10990

5018 20.556 13.492 .65635 .54060 .28670 .17108 6136 18.132 12.253 .67577 .52111 .22450 .11618

5048 16.068 10.526 .65508 .49195 .19347 .09902 6166 22.206 13.217 .59517 .40205 .13148 .07155

5049 15.097 10.399 .68879 .53999 .21941 .08640 6176 24.657 15.283 .61983 .45328 .19506 .10483

5056 -- -- -- -- -- -- 6177 22.951 14.663 .63889 .47121 .19866 .10863

5057 24.564 16.098 .65533 .47960 .19237 .10140 6210 22.084 14.213 .64357 .47159 .18956 .09905

5060 23.670 15.459 .65311 .48251 .19467 .09627 6211 28.883 18.093 .62641 .43968 .17802 .11375

5081 26.311 16.194 .61548 .45485 .19666 .10446 6270 23.233 14.547 .62614 .44616 .17677 .10024

5094 21.463 13.806 .64326 .47971 .20983 .12283 6275 -- -- -- -- -- --

5113 22.234 14.199 .63864 .45563 .17173 .09290 6276 65.500 53.322 .81408 .73390 .55020 .47927

5114 -- -- -- -- -- -- 6335 22.314 13.910 .62338 .46637 .20365 .10956

5123 14.000 7.0455 .50325 .16000 -.11971 -.09642 6434 18.800 9.9429 .52888 .37666 .15193 .09814

5192 20.670 12.973 .62759 .45547 .18009 .09478 6504 18.536 12.428 .67048 .51150 .21494 .10810

5193 23.793 15.210 .63924 .47023 .19737 .10901 6558 16.500 10.223 .61957 .40360 .10434 .09212

5224 28.000 17.097 .61061 .42244 .16106 .08666 6615 18.013 12.341 .68513 .53533 .24346 .14445

5228 21.990 14.636 .66558 .49795 .20596 .10637 6660 22.750 13.242 .58205 .35572 .08039 .03385

5235 26.500 16.026 .60477 .36793 .06771 .00452 6663 36.412 23.573 .64741 .44716 .16895 .10011

5247 19.815 12.965 .65432 .49116 .20610 .10875 6734 22.429 13.796 .61508 .42543 .14704 .07244

5258 21.862 13.824 .63234 .48192 .21745 .11852 6736 16.495 11.220 .68019 .53907 .24416 .12409

5303 20.343 12.746 .62657 .45676 .16564 .07205 6740 30.909 20.782 .67235 .52931 .23812 .04447

5312 20.050 13.359 .66628 .49675 .19627 .09508 6750 30.960 20.252 .65413 .45723 .18357 .13848

5341 65.900 55.300 .83915 .76643 .57784 .49699 6757 24.775 15.756 .63597 .46638 .19457 .10292

5342 -- -- -- -- -- -- 6775 22.488 13.742 .61107 .42421 .15577 .08592

5348 23.098 14.302 .61921 .43645 .17134 .10074 6776 20.111 13.260 .65933 .49311 .20355 .10989

5358 18.741 12.041 .64253 .48522 .19950 .09439 6788 18.374 11.122 .60532 .46892 .21334 .10979

5398 24.910 15.562 .62474 .45972 .19327 .10144 6792 16.874 11.576 .68606 .53823 .23442 .11638

5410 17.892 12.091 .67577 .51883 .21501 .10214 6794 73.222 52.333 .71472 .60707 .37671 .25781

5411 23.814 15.145 .63598 .46459 .19596 .11569 6834 21.648 13.907 .64240 .47353 .20124 .11959

5424 41.935 26.149 .62356 .42048 .15557 .08692 6893 14.678 10.140 .69084 .55745 .25488 .12613

5429 23.458 15.189 .64751 .48173 .20181 .10866 6935 17.889 12.043 .67319 .51287 .20742 .09567

5431 25.333 15.606 .61603 .52583 .37282 .23948 6981 21.311 13.293 .62379 .44998 .18851 .12702

5461 21.965 14.136 .64360 .48464 .20415 .09897 7020 24.478 14.528 .59350 .41515 .16891 .09055

5463 20.826 13.233 .63541 .44250 .14812 .07386 7060 17.811 12.044 .67619 .52541 .23447 .13213

5471 25.154 17.577 .69878 .45813 .03143 -.09933 7066 23.277 14.660 .62980 .46500 .19742 .10560

5477 36.833 32.818 .89099 .86251 .74177 .67636 7074 17.262 11.744 .68036 .52921 .22238 .09651

5528 19.697 12.680 .64378 .49089 .21668 .12051 7097 30.955 21.075 .68085 .52716 .26246 .17014

5579 -- -- -- -- -- -- 7116 19.956 12.691 .63597 .47721 .20566 .11708

5580 31.000 16.429 .52995 .17672 -.10457 .00975 7140 24.604 15.821 .64305 .47027 .19266 .10608

5589 20.874 14.248 .68256 .53169 .24917 .15369 7173 32.350 20.022 .61893 .43262 .18556 .13189

5590 25.907 15.732 .60726 .39773 .13297 .09713 7174 32.713 20.544 .62802 .45615 .20701 .13222

5591 17.877 12.546 .70181 .57908 .28386 .12881 7213 22.486 14.511 .64533 .47250 .18566 .09207

5592 18.036 12.237 .67844 .54961 .26693 .14547 7243 21.403 13.782 .64392 .46707 .18348 .10145

5594 13.922 10.099 .72540 .64794 .37269 .19452 7262 19.258 13.808 .71700 .56212 .24470 .13623

5595 -- -- -- -- -- -- 7274 13.833 9.0205 .65208 .53690 .27644 .15999

5596 20.063 13.700 .68287 .51557 .21121 .11304 7300 18.355 11.747 .63997 .48947 .21780 .12169

5600 19.318 13.470 .69731 .56481 .27159 .13831 7311 13.130 8.1779 .62282 .43451 .09791 -.03027

5618 60.846 40.474 .66519 .56679 .39393 .36206 7363 52.818 42.255 .80000 .71142 .49082 .37794

5650 27.167 15.758 .58003 .39827 .12821 .00497 7422 22.246 14.210 .63875 .45967 .18137 .10635

5656 19.093 12.623 .66116 .48508 .18567 .10119 7431 15.579 10.644 .68323 .55846 .27210 .13975

5658 19.690 12.533 .63650 .48222 .20302 .09800 7481 15.281 10.283 .67295 .52925 .22044 .08399

5661 24.375 15.924 .65328 .45388 .15826 .10061 7497 23.005 14.745 .64093 .45883 .18177 .10660

5666 25.773 15.439 .59906 .34984 .06807 .10150 7498 21.599 14.618 .67680 .52098 .24153 .14772

5695 21.051 13.472 .63995 .47493 .19942 .10531 7499 20.469 13.276 .64860 .47693 .19504 .11173

5742 21.769 15.692 .72085 .66399 .54590 .57908 7531 24.167 14.536 .60150 .38803 .09427 .02998

5766 79.556 34.500 .43366 .27490 .15689 .11548 7534 19.339 12.217 .63174 .43267 .12069 .03326

5770 21.464 13.879 .64659 .47325 .18864 .10017 7556 20.124 13.104 .65117 .48560 .20468 .11573

5775 24.125 13.339 .55292 .11379 -.23963 .05756 7594 23.010 14.815 .64385 .47842 .19751 .09856

5779 13.667 8.6928 .63606 .49173 .23684 .16165 7596 19.262 12.184 .63252 .44206 .13611 .04234

5840 19.845 12.842 .64710 .50592 .23218 .11059 7608 23.601 14.971 .63433 .45338 .17925 .10511

5890 20.094 13.059 .64989 .49446 .21819 .12245 7622 13.588 9.6838 .71266 .55444 .16835 -.02523

5891 15.258 9.6857 .63479 .46831 .16581 .06248 7700 28.132 17.227 .61236 .43718 .17314 .08972

5897 21.613 13.555 .62716 .43904 .16589 .10157 7706 19.795 13.036 .65854 .49154 .19958 .10396

Appendix 4–3.6. L-moments of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
238 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 20.859 13.724 0.65793 0.51504 0.27790 0.22425 8910 25.538 16.577 0.64910 0.50179 0.20882 0.08395

7745 26.770 16.007 .59794 .39418 .13265 .07151 8911 23.114 15.414 .66689 .50275 .21465 .11155

7922 14.724 10.027 .68100 .55267 .26002 .13242 8924 15.196 10.473 .68920 .57411 .29471 .17234

7936 25.443 16.298 .64058 .47748 .21228 .12289 8929 41.818 36.418 .87087 .83325 .70752 .66192

7943 21.656 13.979 .64547 .48115 .20023 .10543 8942 24.663 15.706 .63685 .46632 .20066 .11832

7944 32.558 17.967 .55184 .30808 .06707 .01168 8944 25.828 16.420 .63575 .45081 .16818 .08446

7945 29.117 18.084 .62110 .43683 .18323 .12124 8996 26.268 16.733 .63700 .46890 .20003 .11365

7947 27.197 17.514 .64394 .46300 .20156 .15203 9014 58.100 35.811 .61637 .41374 .15485 .16491

7948 20.997 13.737 .65421 .48441 .19686 .10619 9037 15.110 10.195 .67475 .55111 .26335 .12651

7951 22.538 14.222 .63105 .47862 .21716 .12009 9106 17.551 12.177 .69381 .57506 .30445 .18964

7953 24.074 15.701 .65219 .47633 .16617 .06903 9107 16.423 13.017 .79260 .70778 .40989 .17553

7981 21.744 14.369 .66083 .49923 .21514 .11885 9129 25.942 16.864 .65007 .45021 .12660 .02357

7990 29.803 20.971 .70366 .55694 .27782 .16104 9163 20.009 12.864 .64292 .47623 .19344 .09949

7992 41.500 28.242 .68054 .52532 .25376 .17132 9213 32.426 20.078 .61920 .40636 .13231 .07359

7997 16.950 10.202 .60188 .41008 .11402 .03081 9214 59.250 40.826 .68904 .50492 .19589 .17066

7999 18.769 11.269 .60041 .33850 -.00745 -.02661 9222 21.766 14.478 .60229 .46638 .27424 .22005

8022 16.939 10.763 .63539 .44896 .12924 .04498 9248 24.974 15.488 .62551 .43329 .15594 .09549

8023 16.877 11.456 .67881 .53603 .24159 .12345 9266 22.345 14.377 .65169 .51853 .25358 .13996

8047 20.989 13.562 .64615 .47947 .20101 .11133 9270 19.026 12.299 .69209 .53692 .24138 .12854

8060 26.614 18.563 .69749 .54921 .25860 .13421 9295 21.967 14.065 .75315 .68547 .46530 .34483

8062 21.300 11.500 .53991 .25166 .01762 .10415 9304 -- -- -- -- -- --

8068 27.136 15.968 .58842 .36438 .14353 .15915 9307 18.099 11.665 .64453 .50071 .23272 .13440

8081 21.444 14.084 .65676 .49158 .20784 .11522 9328 22.558 14.740 .65340 .46574 .15572 .05491

8089 18.097 12.032 .66488 .51769 .20959 .06303 9329 28.556 16.583 .58074 .28691 -.06126 -.15028

8221 56.800 31.267 .55047 .28998 -.11864 -.09524 9345 -- -- -- -- -- --

8252 16.767 11.283 .67293 .52566 .22601 .10511 9363 30.538 19.080 .62479 .43486 .18152 .12745

8265 28.739 17.568 .61131 .43762 .17996 .10449 9364 29.719 18.782 .63201 .44726 .18548 .12083

8289 23.459 13.616 .58039 .35454 .11048 .10364 9365 21.476 13.871 .64590 .44015 .06448 -.08103

8305 17.061 11.793 .69125 .54977 .24666 .11589 9371 25.351 14.701 .57990 .33879 .07648 .06924

8335 24.829 15.535 .62569 .46239 .20012 .10910 9417 22.811 14.330 .62821 .46492 .19777 .10919

8400 21.766 14.478 .66519 .47750 .15999 .05799 9419 26.502 16.422 .61965 .44358 .18402 .10834

8445 24.974 15.488 .62018 .44924 .18565 .10729 9435 18.404 12.860 .69879 .54773 .22280 .06463

8446 22.345 14.377 .64339 .47037 .18982 .10198 9491 24.298 15.282 .62894 .45469 .18541 .10424

8451 19.026 12.299 .64642 .48514 .18758 .07783 9499 17.955 11.987 .66763 .50624 .20745 .10547

8531 21.967 14.065 .64029 .47981 .20690 .11232 9522 78.200 72.400 .92583 .94475 .90331 .88674

8541 19.766 12.650 .63996 .52894 .25003 .11604 9527 19.846 13.356 .67300 .50591 .20320 .09795

8544 23.832 14.653 .61486 .42622 .14735 .06845 9532 20.709 13.267 .64061 .47597 .20202 .11281

8545 26.615 17.244 .64788 .50145 .27658 .14329 9544 -- -- -- -- -- --

8563 21.405 13.657 .63805 .47017 .20553 .12789 9565 19.078 12.769 .66929 .51635 .22180 .10358

8566 20.392 13.787 .67610 .51941 .22134 .10303 9570 19.222 12.756 .66361 .48091 .16879 .08118

8583 21.473 13.877 .64624 .46754 .19277 .12636 9574 22.200 11.448 .51566 .16933 -.05817 .02521

8584 19.667 12.772 .64938 .47021 .17058 .07978 9588 22.444 15.278 .68068 .52236 .23457 .13291

8623 20.576 13.390 .65074 .48749 .20718 .11271 9665 23.020 14.847 .64497 .47645 .19579 .10065

8625 22.398 13.741 .61351 .45334 .19167 .10353 9715 21.287 13.497 .63406 .46929 .19924 .11127

8630 16.226 10.656 .65672 .51031 .21980 .10422 9729 23.173 14.262 .61548 .44519 .18553 .10697

8631 18.199 11.970 .65776 .50732 .21825 .10305 9772 24.141 15.548 .64405 .49090 .23302 .14776

8646 21.038 13.626 .64768 .50156 .22903 .11840 9814 15.690 9.9384 .63344 .54052 .32163 .22326

8647 19.103 12.810 .67059 .51620 .23163 .13236 9815 24.515 15.465 .63084 .46493 .19516 .09960

8677 23.549 14.914 .63332 .48863 .22000 .11346 9816 16.643 12.014 .72189 .63678 .39184 .25647

8696 63.100 39.344 .62353 .35287 .01349 .06538 9817 18.541 12.215 .65881 .49990 .21293 .11420

8743 23.549 14.797 .62837 .45644 .18352 .09446 9829 16.501 11.169 .67685 .53217 .23360 .11245

8761 16.846 11.407 .67714 .52799 .23301 .12493 9830 15.269 10.407 .68159 .56839 .29959 .17956

8778 24.161 15.290 .63285 .45726 .18502 .09890 9858 17.675 11.591 .65576 .51600 .22915 .09814

8845 22.918 14.591 .63667 .45143 .17049 .09350 9893 19.508 12.571 .64441 .47951 .19380 .09370

8859 23.276 15.047 .64648 .49374 .22564 .12656 9916 23.330 14.177 .60769 .43455 .18500 .11159

8898 21.963 13.616 .61997 .46898 .21352 .12616 9976 20.195 13.098 .64859 .47101 .17505 .08370

8908 25.542 17.904 .70097 .60579 .38349 .25643

Appendix 4–3.6. L-moments of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 239

Appendix 4–3.7. L-moments of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

0015 -- -- -- -- -- -- 1154 64.079 39.610 0.61815 0.41916 0.18474 0.13300

0016 38.415 24.511 0.63807 0.45100 0.18118 0.10404 1165 33.032 21.586 .65349 .46707 .17754 .09064

0050 33.204 21.705 .65371 .48765 .21246 .10727 1185 16.514 11.841 .71702 .60180 .31048 .15723

0054 71.286 46.552 .65304 .44926 .18479 .13620 1186 48.518 33.690 .69438 .54954 .30829 .22648

0120 86.625 60.589 .69944 .59446 .38992 .33039 1188 50.000 27.000 .54000 .31852 .00000 .37037

0145 44.913 30.135 .67096 .49523 .24111 .17021 1245 92.333 58.444 .63297 .47542 .35769 .44785

0146 51.174 33.767 .65984 .46386 .15152 .08665 1246 38.230 23.847 .62378 .41899 .15314 .08643

0174 37.812 25.808 .68253 .50037 .21625 .13467 1267 35.730 24.064 .67349 .49465 .19466 .07683

0178 102.67 64.000 .62338 .25417 -.11979 .09375 1304 33.815 21.281 .62935 .42745 .14474 .07743

0179 37.756 25.620 .67856 .49014 .19427 .11350 1325 38.651 24.254 .62750 .42590 .14958 .07869

0202 35.973 24.510 .68134 .48733 .17414 .06600 1429 34.300 22.862 .66653 .48515 .19878 .10932

0206 33.496 22.375 .66800 .48974 .20703 .11914 1431 36.958 24.086 .65169 .47414 .20017 .11258

0208 -- -- -- -- -- -- 1432 36.151 23.862 .66005 .48354 .20672 .11518

0211 40.071 25.709 .64159 .45158 .17790 .10186 1433 34.769 22.194 .63832 .45854 .18719 .10462

0244 54.725 31.494 .57550 .33084 .07864 .07951 1434 34.489 22.505 .65253 .47903 .20274 .10843

0248 25.423 17.475 .68736 .51983 .21590 .09915 1435 32.376 21.624 .66791 .49853 .22322 .13029

0262 37.700 24.404 .64733 .47260 .20208 .11583 1436 36.782 23.471 .63812 .46382 .19844 .11612

0271 75.125 48.411 .64440 .43268 .25710 .46883 1437 25.000 17.721 .70882 .58506 .31346 .18730

0380 26.257 17.705 .67430 .51721 .23249 .12278 1438 34.346 22.138 .64457 .46772 .20142 .12324

0394 54.600 40.800 .74725 .62745 .33824 .11275 1462 -- -- -- -- -- --

0408 89.625 59.196 .66049 .42443 .04676 -.01478 1492 29.178 19.622 .67250 .49679 .21303 .12821

0427 52.778 34.886 .66100 .44902 .17575 .13079 1500 84.222 43.889 .52111 .41519 .44937 .45443

0428 50.353 31.318 .62198 .42372 .16883 .10409 1528 28.990 19.543 .67413 .49535 .19904 .10196

0429 52.216 34.549 .66165 .51021 .27211 .19194 1541 42.030 24.977 .59427 .32528 .04038 .02679

0463 25.897 19.121 .73833 .61409 .34092 .21068 1569 43.835 26.781 .61095 .37742 .09960 .06222

0493 45.222 25.917 .57310 .30210 -.06339 -.21773 1632 -- -- -- -- -- --

0495 25.189 17.103 .67900 .50477 .19890 .09111 1641 28.000 18.915 .67554 .53484 .29195 .21639

0496 7.0909 5.5195 .77839 .81035 .56495 .29946 1646 30.256 20.637 .68208 .49699 .18953 .08778

0498 21.750 18.429 .84729 .78295 .54457 .38953 1663 37.500 22.717 .60580 .33158 .03158 .02797

0509 35.195 22.746 .64628 .45336 .17050 .09045 1671 36.862 24.249 .65783 .47024 .19196 .11272

0518 37.759 24.933 .66033 .48135 .20673 .12245 1680 32.666 21.204 .64914 .47144 .19470 .10340

0521 39.571 28.057 .70903 .52685 .22291 .15742 1694 27.694 19.508 .70440 .55569 .27993 .17173

0556 29.282 19.861 .67827 .50315 .18938 .05630 1696 29.959 19.886 .66378 .47156 .15866 .05601

0569 42.654 27.754 .65068 .45702 .17889 .10175 1697 24.016 16.633 .69258 .55122 .25431 .11379

0572 40.524 26.746 .66001 .48313 .20650 .11976 1698 32.458 21.501 .66243 .48793 .21428 .12357

0576 36.987 24.524 .66305 .47338 .19239 .12148 1720 37.792 25.948 .68661 .50727 .23557 .17542

0580 29.747 18.598 .62523 .42603 .14545 .08236 1761 62.170 38.343 .61675 .36902 .10941 .11265

0587 49.307 31.469 .63822 .45513 .18424 .10726 1773 39.614 25.562 .64528 .45981 .18825 .11021

0605 37.609 24.158 .64236 .42691 .12035 .04516 1810 66.111 44.750 .67689 .43744 -.02022 -.25716

0639 36.224 23.646 .65278 .45123 .16679 .10293 1823 75.625 54.518 .72090 .64625 .51720 .48575

0655 -- -- -- -- -- -- 1870 46.579 29.487 .63304 .44808 .18046 .10205

0665 36.149 23.977 .66327 .48196 .19198 .09836 1875 34.900 20.478 .58676 .41508 .09581 -.17580

0689 32.409 21.357 .65896 .46150 .16472 .08669 1876 25.062 13.333 .53198 .31335 .10722 .06525

0690 30.088 20.814 .69176 .52173 .22687 .11683 1889 55.147 35.798 .64914 .47380 .21528 .12872

0691 34.613 22.210 .64166 .45625 .18211 .10576 1903 25.070 17.145 .68389 .52391 .24574 .15885

0708 44.074 26.136 .59301 .34299 .09332 .10166 1914 93.143 53.333 .57260 .36750 .21964 .43750

0738 34.603 22.140 .63983 .45961 .17641 .08279 1920 29.554 19.275 .65220 .47705 .19461 .09919

0776 26.201 17.895 .68298 .51765 .22103 .11062 1921 39.073 25.223 .64555 .46449 .19666 .12029

0779 23.864 16.498 .69134 .52835 .23038 .12000 1937 40.362 25.645 .63538 .45674 .18537 .09615

0784 28.472 19.609 .68872 .52157 .23031 .12983 1956 45.129 28.776 .63764 .43993 .16673 .09478

0786 28.648 18.773 .65528 .48450 .20595 .10983 1970 108.71 63.810 .58695 .36090 .37836 .69627

0917 46.792 29.132 .62258 .42612 .16516 .10139 2014 49.766 32.033 .64367 .45212 .20231 .14990

0923 96.000 62.286 .64881 .44610 .31995 .57856 2015 47.029 30.291 .64408 .44936 .18287 .11571

0926 35.263 23.064 .65407 .47724 .20197 .11477 2019 71.375 36.839 .51614 .10325 -.01987 .38827

0950 33.160 20.043 .60444 .32627 -.01722 -.03484 2024 34.085 22.423 .65787 .47451 .19014 .10049

0996 77.875 54.268 .69686 .49325 .18723 .19842 2042 22.250 16.357 .73515 .56769 .20306 .00218

1013 37.096 24.737 .66682 .48267 .20763 .12839 2043 19.793 12.711 .64218 .43397 .11434 .04247

1017 33.204 21.785 .65610 .47291 .19275 .10994 2048 33.622 22.118 .65786 .45813 .16729 .09824

1042 52.500 27.967 .53270 .31824 -.22765 -.48272 2050 25.489 18.574 .72871 .58807 .29962 .16492

1048 72.778 54.083 .74313 .56490 .18226 -.03962 2051 28.000 20.703 .73940 .60905 .31759 .16061

1053 29.864 19.443 .65103 .46045 .16509 .07852 2053 27.667 14.933 .53976 .09821 -.07143 .53571

1057 34.797 22.735 .65335 .48434 .21187 .12124 2073 40.072 26.186 .65348 .47643 .20742 .12672

1063 82.000 62.143 .75784 .58678 .31782 .32931 2082 22.163 15.443 .69677 .54463 .24444 .11778

1068 33.940 22.343 .65832 .47637 .19284 .10320 2086 35.584 23.055 .64790 .46015 .18088 .09817

1080 31.852 22.733 .71371 .55688 .27642 .18052 2088 37.714 22.246 .58986 .35564 .08839 .04375

1081 36.350 22.736 .62548 .43472 .16367 .09161 2090 33.070 21.538 .65129 .44972 .14090 .04607

1133 35.500 18.967 .53427 .21705 .07168 .18893 2096 34.560 21.999 .63655 .45066 .18459 .11174

1136 48.619 31.187 .64147 .44362 .17893 .11597 2128 34.259 21.745 .63474 .45752 .19002 .10157

1138 91.500 54.567 .59636 .44533 .35247 .69334 2131 32.044 21.131 .65945 .48521 .21311 .12949

1139 59.122 34.002 .57512 .34407 .13122 .13289 2142 122.80 77.900 .63436 .58408 .76252 .48524

Appendix 4–3.7. L-moments of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
240 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 60.500 36.773 0.60781 0.33201 0.05974 0.06840 3463 33.967 22.930 0.67507 0.45934 0.09031 -0.07028

2206 38.981 25.684 .65889 .47253 .18157 .08770 3476 35.180 23.026 .65453 .46248 .17025 .08774

2238 35.569 23.463 .65963 .48833 .22618 .14897 3485 52.100 39.500 .75816 .65654 .40808 .22897

2240 43.500 27.662 .63592 .45982 .22965 .17214 3507 38.580 24.835 .64374 .45253 .18662 .12003

2242 44.516 27.979 .62851 .45104 .20340 .13000 3546 42.378 26.924 .63533 .43997 .17089 .10361

2244 43.718 27.984 .64010 .44993 .18235 .10843 3547 28.593 18.924 .66185 .46351 .15919 .08363

2247 49.192 33.435 .67969 .52908 .27523 .18446 3579 35.522 21.529 .60607 .39009 .11424 .05396

2309 39.874 26.126 .65521 .46323 .17684 .09793 3642 37.259 23.944 .64263 .45877 .18739 .10745

2312 46.358 29.471 .63573 .45219 .18800 .10273 3646 32.479 21.082 .64909 .48375 .20859 .10700

2334 32.316 20.892 .64649 .43616 .13963 .06377 3668 108.83 74.033 .68025 .51643 .38766 .68663

2336 24.629 16.774 .68105 .51796 .22271 .10980 3673 78.333 57.056 .72837 .60259 .38726 .36695

2354 39.533 21.600 .54637 .21517 .02184 .22039 3686 36.597 23.360 .63831 .44763 .17899 .10774

2355 30.875 18.359 .59462 .31797 -.00285 -.01817 3691 35.229 23.089 .65540 .46733 .18326 .09857

2357 39.663 24.557 .61913 .40129 .13769 .09951 3734 112.14 71.095 .63397 .41112 .24113 .38580

2360 34.304 22.741 .66291 .48805 .21359 .12649 3771 39.065 24.385 .62421 .42335 .17126 .12191

2361 29.425 21.140 .71845 .57772 .30037 .17673 3789 45.038 30.340 .67365 .46978 .17043 .08653

2394 39.790 25.155 .63220 .44791 .18133 .10338 3826 31.774 20.533 .64624 .49776 .24426 .14768

2404 36.618 23.377 .63840 .45253 .18385 .10718 3831 30.254 19.514 .64500 .45752 .17636 .10507

2415 38.668 25.171 .65095 .47760 .20502 .11388 3841 28.561 19.402 .67931 .49862 .18231 .05541

2462 34.387 22.734 .66112 .48805 .21466 .12429 3871 31.587 20.600 .65217 .47774 .19390 .09801

2528 34.972 19.498 .55753 .26356 -.00708 .01281 3884 72.500 48.786 .67291 .46925 .22328 .40264

2617 31.247 20.016 .64058 .47082 .20286 .11883 3941 41.692 22.262 .53395 .22608 .00820 .07158

2619 30.359 20.896 .68831 .51666 .21982 .10790 3963 -- -- -- -- -- --

2621 27.794 18.774 .67546 .51003 .22390 .12062 4040 28.986 19.887 .68607 .53500 .25447 .13956

2675 39.058 25.866 .66224 .47169 .17679 .08044 4058 58.778 41.889 .71267 .53467 .19098 .09435

2676 41.941 27.033 .64453 .43620 .15454 .08897 4098 29.121 19.940 .68475 .50563 .20286 .10144

2679 29.828 19.763 .66256 .48238 .20486 .13380 4100 30.280 20.467 .67593 .50648 .20663 .08433

2715 31.114 20.663 .66411 .51344 .24947 .14884 4137 37.048 23.903 .64518 .46261 .20259 .13249

2744 29.937 20.243 .67618 .50597 .21905 .12312 4191 32.913 21.785 .66190 .47974 .19479 .10725

2758 45.049 31.581 .70103 .55177 .29996 .23765 4256 -- -- -- -- -- --

2794 43.286 19.476 .44994 -.03374 -.08802 .12714 4257 38.951 25.507 .65485 .47136 .19833 .11868

2797 32.857 22.385 .68130 .52218 .24926 .14936 4258 50.964 35.797 .70240 .53486 .24624 .12458

2811 30.599 20.417 .66725 .47781 .17536 .08012 4278 31.246 20.519 .65669 .47394 .17729 .07804

2813 27.875 21.575 .77399 .68863 .46717 .35482 4299 17.968 12.660 .70462 .58152 .28609 .12678

2814 64.143 28.571 .44543 -.00200 .28500 .72833 4300 61.184 38.487 .62904 .43501 .17692 .10347

2815 26.701 19.067 .71409 .57242 .29522 .18361 4305 59.298 36.133 .60935 .39614 .14469 .09666

2818 28.113 19.582 .69654 .52667 .21438 .09018 4307 64.037 39.264 .61315 .40166 .15587 .10649

2986 41.901 26.315 .62802 .42630 .14773 .06931 4309 43.147 27.535 .63817 .44642 .17399 .10204

3005 34.260 22.951 .66992 .49083 .20244 .10584 4311 41.071 26.552 .64648 .45894 .18142 .10069

3033 21.967 15.426 .70224 .56339 .25467 .09658 4313 42.559 26.554 .62393 .46625 .23478 .15042

3034 -- -- -- -- -- -- 4319 54.911 34.459 .62753 .42393 .14918 .08285

3047 77.333 53.167 .68750 .47962 .24392 .33856 4329 39.573 25.635 .64780 .46369 .19167 .11201

3103 19.739 14.379 .72847 .58439 .25929 .08256 4331 -- -- -- -- -- --

3133 35.404 22.375 .63201 .43843 .15713 .07829 4375 32.741 21.701 .66279 .47851 .19775 .11946

3156 29.848 19.224 .64404 .45141 .16382 .07919 4392 48.242 28.653 .59394 .38727 .15157 .11791

3171 33.979 22.035 .64847 .47137 .19665 .11176 4425 24.703 17.699 .71646 .56693 .26842 .14072

3189 33.829 22.107 .65350 .46055 .18743 .12952 4440 34.450 21.800 .63280 .45861 .18683 .10009

3260 25.384 17.545 .69117 .54494 .26170 .13393 4476 33.393 21.611 .64718 .46826 .19526 .10815

3267 37.650 23.725 .63013 .42643 .13148 .03840 4498 12.889 8.5000 .65948 .46032 .05696 -.08870

3270 28.110 18.782 .66817 .47741 .17325 .08358 4517 34.232 22.223 .64918 .46775 .19209 .10727

3272 61.889 50.917 .82271 .72239 .50549 .42506 4520 36.512 24.146 .66133 .48289 .21568 .13925

3277 20.000 11.255 .56273 .25687 -.04200 -.03231 4525 123.14 94.667 .76875 .65252 .50855 .65744

3278 29.776 21.332 .71644 .56268 .26145 .12482 4563 77.667 57.444 .73963 .47707 -.04449 -.37110

3280 21.434 15.309 .71427 .57302 .26159 .10700 4570 30.607 20.274 .66241 .47494 .18115 .09207

3281 13.694 10.398 .75926 .67192 .36547 .14696 4577 40.335 26.950 .66815 .49426 .21673 .12284

3283 46.239 29.296 .63358 .44265 .17955 .11129 4591 40.171 26.068 .64893 .46824 .18960 .10157

3284 37.852 24.673 .65184 .46608 .18924 .10650 4670 30.553 20.378 .66697 .48978 .20364 .11255

3285 37.244 25.057 .67280 .50296 .23094 .13815 4671 38.235 24.843 .64974 .47728 .25333 .22797

3329 35.066 22.736 .64837 .46329 .18367 .09718 4679 37.052 23.851 .64370 .45272 .18306 .11538

3335 36.722 22.091 .60157 .41453 .16234 .09101 4696 33.429 16.238 .48575 .14252 .11437 .33138

3370 34.632 23.083 .66653 .50136 .22178 .11613 4703 40.424 27.812 .68801 .49511 .17771 .06129

3410 31.150 20.919 .67155 .49110 .19690 .09920 4704 42.350 26.106 .61643 .43254 .18408 .11285

3415 37.336 24.099 .64545 .45720 .18373 .10608 4731 44.738 29.400 .65716 .49151 .24598 .15290

3430 50.658 31.905 .62980 .43145 .17016 .10809 4792 32.750 22.096 .67468 .49686 .20854 .11200

3431 63.422 38.068 .60024 .37276 .11466 .05234 4819 44.899 28.904 .64375 .44390 .16429 .09522

3441 39.818 27.126 .68124 .46384 .12042 .00366 4852 41.875 24.018 .57356 .22825 -.01859 .25948

3442 30.534 19.474 .63779 .46415 .18355 .08284 4866 32.629 21.332 .65378 .48231 .21048 .11990

3446 23.405 15.545 .66416 .48139 .16233 .04625 4876 34.803 21.955 .63083 .46184 .23483 .17442

3460 31.542 21.524 .68238 .50740 .18554 .01598 4878 47.546 29.605 .62265 .42112 .15593 .09340

3462 30.121 20.171 .66966 .52152 .25195 .13987 4880 31.647 21.191 .66962 .49418 .20446 .10398

Appendix 4–3.7. L-moments of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 241

4920 28.964 19.333 0.66751 0.48758 0.19450 0.09878 5957 33.492 22.338 0.66695 0.49263 0.21315 0.12086

4934 16.400 13.000 .79268 .64615 .15385 -.43077 5958 34.890 21.399 .61332 .40436 .11661 .03122

4972 33.882 22.071 .65141 .47022 .18968 .10142 5973 42.931 27.405 .63836 .43916 .15885 .07633

4973 35.472 23.050 .64979 .50115 .25083 .16378 5996 34.677 22.504 .64896 .46172 .18165 .10119

4974 29.615 19.977 .67455 .51312 .23228 .13027 6017 42.186 26.711 .63318 .39529 .08947 .04435

4975 39.152 25.085 .64071 .44462 .17033 .09677 6024 33.472 20.423 .61014 .41500 .15525 .07565

4978 33.193 23.094 .69574 .56087 .31496 .22456 6050 24.400 15.638 .64091 .59224 .42120 .21801

4979 112.00 74.800 .66786 .49332 .32487 .50579 6104 41.220 28.243 .68518 .50753 .22000 .12252

4982 30.502 20.098 .65891 .49448 .21089 .10139 6108 38.085 24.851 .65252 .46898 .19657 .11637

5018 34.789 23.803 .68421 .54111 .26705 .14866 6136 30.395 20.643 .67914 .49777 .19844 .10015

5048 23.330 15.672 .67175 .50143 .20796 .11050 6166 32.321 18.583 .57495 .33583 .06681 .03121

5049 25.556 17.654 .69082 .51124 .19922 .10071 6176 41.356 26.691 .64539 .47564 .20588 .10425

5056 -- -- -- -- -- -- 6177 40.677 26.308 .64675 .45403 .17219 .08953

5057 39.568 25.667 .64867 .44287 .15108 .07650 6210 36.587 23.842 .65166 .46891 .19518 .11472

5060 45.856 29.694 .64755 .42271 .11460 .05037 6211 47.593 29.571 .62132 .42746 .18993 .14464

5081 43.731 27.374 .62598 .43307 .16246 .09122 6270 40.401 25.825 .63922 .45226 .18973 .11965

5094 35.711 23.485 .65763 .47510 .19353 .10400 6275 -- -- -- -- -- --

5113 35.724 23.311 .65252 .46405 .18596 .10822 6276 88.500 72.071 .81437 .72646 .57384 .59812

5114 -- -- -- -- -- -- 6335 38.277 24.554 .64148 .46194 .18597 .09552

5123 20.545 11.200 .54513 .29437 .16396 .32738 6434 24.857 12.791 .51459 .34665 .09579 .07002

5192 36.781 23.821 .64764 .46327 .18896 .10865 6504 30.382 20.931 .68893 .52367 .23301 .11996

5193 38.583 24.907 .64556 .45830 .18248 .10018 6558 21.050 12.008 .57045 .32252 .07865 .09841

5224 50.347 31.328 .62225 .41532 .15661 .10842 6615 28.661 19.811 .69121 .52181 .22830 .12591

5228 38.908 26.076 .67019 .48624 .20366 .12025 6660 33.433 19.982 .59769 .36061 .07191 .02371

5235 40.765 28.750 .70527 .59059 .42273 .43695 6663 61.600 40.045 .65008 .42221 .13143 .09333

5247 32.897 22.040 .66998 .49373 .20913 .11487 6734 40.257 25.584 .63551 .43970 .16632 .08973

5258 36.473 23.660 .64870 .47796 .20837 .12013 6736 25.885 17.818 .68834 .51873 .21220 .09540

5303 29.983 19.471 .64941 .47738 .19705 .11349 6740 33.200 22.200 .66867 .49474 .19294 .03028

5312 32.379 22.160 .68441 .51115 .22096 .12282 6750 51.323 32.639 .63596 .43279 .17973 .12171

5341 107.71 79.952 .74226 .67933 .66647 .79273 6757 43.487 27.925 .64214 .45020 .17598 .10009

5342 -- -- -- -- -- -- 6775 37.693 23.802 .63149 .43081 .14743 .06895

5348 40.989 25.967 .63352 .43794 .16760 .09574 6776 34.621 23.396 .67578 .49426 .20497 .11462

5358 28.735 18.837 .65554 .47819 .18775 .08923 6788 37.057 22.925 .61865 .41087 .11164 .02123

5398 42.887 26.820 .62538 .42432 .15203 .08753 6792 27.841 19.272 .69224 .52159 .22203 .11758

5410 29.612 20.759 .70102 .53986 .24705 .13405 6794 130.67 53.000 .40561 .53711 .78616 .52830

5411 38.843 25.253 .65012 .46415 .18643 .10065 6834 39.017 25.187 .64553 .44902 .16853 .09169

5424 70.161 44.140 .62913 .43743 .18943 .11755 6893 23.105 16.339 .70715 .55211 .24730 .12213

5429 37.910 24.999 .65943 .47828 .19486 .10384 6935 29.074 20.210 .69512 .52872 .23103 .11749

5431 32.273 19.782 .61296 .40625 .12607 -.00689 6981 33.579 20.950 .62391 .43258 .16549 .08415

5461 34.993 23.157 .66176 .48413 .19399 .09370 7020 32.723 19.996 .61108 .42839 .18042 .11388

5463 34.741 22.490 .64737 .44924 .16249 .08417 7060 30.531 21.581 .70686 .55148 .26456 .15054

5471 60.222 45.361 .75323 .60616 .39332 .44266 7066 39.813 25.681 .64504 .46254 .18852 .10413

5477 45.273 39.618 .87510 .81612 .63056 .47575 7074 27.327 18.760 .68650 .51265 .20677 .09426

5528 29.892 19.673 .65813 .48260 .19562 .10108 7097 42.169 28.989 .68744 .52105 .25392 .16834

5579 -- -- -- -- -- -- 7116 32.943 22.316 .67742 .51785 .23396 .11432

5580 98.625 56.125 .56907 .22176 -.15495 -.33058 7140 40.108 26.370 .65746 .47622 .20061 .11630

5589 33.146 21.465 .64760 .44756 .16614 .10970 7173 59.889 38.066 .63562 .45276 .21147 .14715

5590 42.767 26.876 .62842 .40790 .12683 .07406 7174 61.635 38.758 .62883 .43252 .17220 .10053

5591 27.119 19.004 .70078 .53559 .21716 .07922 7213 36.713 24.111 .65676 .47288 .19531 .11658

5592 28.526 19.805 .69427 .54080 .25020 .13067 7243 35.351 23.214 .65668 .46889 .19000 .11523

5594 23.754 16.996 .71549 .56656 .24159 .07665 7262 27.883 19.090 .68464 .49994 .21393 .17330

5595 -- -- -- -- -- -- 7274 20.632 13.716 .66479 .51618 .22765 .10111

5596 33.499 22.272 .66485 .45645 .14809 .07400 7300 29.371 19.690 .67040 .51324 .23630 .12890

5600 27.301 18.838 .69000 .52887 .23457 .12906 7311 24.450 17.545 .71758 .56622 .24721 .06869

5618 101.78 77.444 .76092 .63292 .38051 .30078 7363 87.250 56.500 .64756 .44943 .32870 .52023

5650 61.875 47.696 .77085 .68776 .39049 .09547 7422 34.607 22.477 .64949 .46248 .18480 .10422

5656 32.700 21.900 .66971 .48347 .19600 .11376 7431 23.809 16.513 .69354 .53788 .23691 .10927

5658 30.010 19.379 .64575 .46379 .17187 .07231 7481 24.317 16.363 .67291 .49262 .17664 .06296

5661 33.795 21.654 .64075 .42524 .14163 .09733 7497 38.460 24.361 .63341 .43271 .16378 .10062

5666 29.952 19.529 .65199 .44329 .13994 .09241 7498 38.485 26.462 .68760 .49922 .18417 .06299

5695 34.361 22.145 .64447 .44992 .16269 .08022 7499 32.441 21.234 .65454 .46932 .19044 .10984

5742 39.700 29.633 .74643 .71260 .59465 .49138 7531 36.744 22.731 .61862 .41486 .13779 .07471

5766 118.71 47.095 .39671 .09767 .07280 -.18402 7534 32.405 21.370 .65946 .46309 .16426 .07928

5770 35.688 23.275 .65218 .45848 .17298 .09509 7556 34.086 22.512 .66045 .47860 .19834 .11399

5775 35.571 21.524 .60509 .36372 .25885 .51549 7594 37.702 24.749 .65644 .46956 .18211 .09342

5779 29.067 16.933 .58257 .30752 -.00826 -.07024 7596 26.312 17.390 .66089 .48581 .19768 .09960

5840 30.368 20.619 .67896 .53472 .26331 .14866 7608 42.937 27.105 .63128 .42154 .14859 .09457

5890 31.600 20.961 .66332 .48824 .20320 .10710 7622 29.857 25.593 .85720 .80485 .62928 .54282

5891 23.595 15.817 .67035 .52169 .25285 .15379 7700 49.717 30.464 .61276 .41318 .15364 .09510

5897 37.099 23.626 .63683 .44060 .16972 .09882 7706 31.899 21.036 .65946 .47102 .18098 .09608

Appendix 4–3.7. L-moments of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
242 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 31.333 21.322 0.68048 0.51344 0.23927 0.15565 8910 53.000 40.583 0.76572 0.59519 0.22216 -0.00235

7745 47.429 28.927 .60991 .40102 .15541 .11810 8911 42.284 28.533 .67481 .48640 .19239 .10133

7922 26.310 18.630 .70812 .56126 .27051 .14243 8924 22.744 15.964 .70188 .55940 .27136 .15164

7936 45.130 29.044 .64358 .46016 .19423 .11438 8929 53.667 46.694 .87008 .79723 .59590 .45755

7943 33.631 21.845 .64954 .46493 .18136 .09574 8942 43.049 27.883 .64771 .46195 .19481 .11945

7944 57.818 32.030 .55398 .26691 .00723 -.00202 8944 46.432 30.202 .65045 .45606 .18088 .11043

7945 47.617 30.018 .63040 .43531 .17628 .10701 8996 45.176 28.970 .64127 .45057 .18165 .11310

7947 43.101 27.888 .64705 .46245 .21156 .15599 9014 98.286 66.333 .67490 .58363 .37688 .44293

7948 30.898 20.738 .67117 .49916 .21602 .11997 9037 22.572 15.369 .68091 .51826 .20918 .07929

7951 41.260 27.055 .65571 .47952 .20027 .10525 9106 24.873 17.624 .70855 .56927 .28192 .15403

7953 36.571 23.657 .64687 .42409 .09855 .03478 9107 23.167 18.138 .78292 .65369 .31378 .07239

7981 27.593 18.054 .65431 .47039 .17831 .09286 9129 33.952 22.040 .64914 .43382 .10984 .02204

7990 57.793 37.337 .64605 .43704 .16013 .09641 9163 33.019 21.895 .66310 .48609 .19835 .09738

7992 135.17 98.700 .73021 .64404 .47991 .62985 9213 51.470 34.161 .66371 .47382 .20306 .12582

7997 22.405 13.755 .61393 .41388 .12952 .06740 9214 159.50 89.900 .56364 .49722 .70337 .55432

7999 18.769 11.269 .60041 .33850 -.00745 -.02661 9222 42.299 26.099 .61701 .44177 .19477 .10586

8022 21.935 14.592 .66524 .49681 .20087 .11508 9248 23.884 15.394 .64453 .46673 .18931 .10283

8023 26.236 18.065 .68855 .52125 .21784 .10144 9266 25.981 16.454 .63330 .45387 .16521 .06723

8047 33.247 21.713 .65307 .46392 .17902 .09780 9270 34.991 23.873 .68224 .49139 .18364 .08532

8060 39.667 27.219 .68619 .50728 .20950 .10991 9295 38.574 26.468 .68616 .47964 .14954 .04395

8062 34.500 18.995 .55059 .35284 .23126 .24846 9304 -- -- -- -- -- --

8068 31.810 17.138 .53877 .29902 .11903 .13077 9307 27.222 18.080 .66415 .50309 .22058 .11293

8081 35.707 23.734 .66470 .48318 .20339 .12124 9328 37.265 25.335 .67985 .48878 .18051 .07485

8089 33.308 23.446 .70393 .51250 .15754 .01000 9329 54.000 39.000 .72222 .51648 .17949 .12332

8221 84.875 60.411 .71176 .63110 .38457 .33727 9345 -- -- -- -- -- --

8252 25.094 17.064 .68001 .50763 .20268 .09421 9363 53.267 32.594 .61189 .39045 .13236 .08923

8265 47.913 29.564 .61704 .41985 .15997 .10093 9364 52.276 33.044 .63209 .43471 .17887 .11760

8289 28.343 16.592 .58539 .35168 .09544 .07313 9365 38.722 22.493 .58089 .26496 -.03672 .07057

8305 27.309 18.912 .69251 .52317 .22015 .10924 9371 41.134 25.293 .61489 .38681 .11477 .07568

8335 38.757 24.716 .63773 .45441 .18687 .11158 9417 37.336 24.484 .65578 .48153 .20465 .11007

8400 33.102 21.727 .65637 .44172 .13141 .06352 9419 45.588 28.754 .63075 .44073 .17779 .10436

8445 42.331 26.523 .62655 .43132 .15798 .08932 9435 29.440 20.263 .68828 .50476 .20293 .12340

8446 40.141 25.952 .64651 .45033 .16927 .09323 9491 41.135 26.398 .64175 .45693 .18912 .10997

8451 29.149 18.525 .63552 .42769 .11951 .03834 9499 27.826 18.682 .67137 .48851 .18893 .09359

8531 34.980 23.308 .66632 .49854 .22361 .12590 9522 -- -- -- -- -- --

8541 30.544 20.425 .66870 .55838 .30338 .18480 9527 32.221 22.134 .68692 .51016 .21461 .11546

8544 38.211 24.026 .62879 .42893 .15734 .09456 9532 35.045 22.653 .64639 .45774 .17875 .09795

8545 34.750 19.583 .56355 .39157 .13681 -.05777 9544 -- -- -- -- -- --

8563 33.363 21.377 .64074 .45943 .19723 .12396 9565 31.312 21.246 .67854 .49443 .18286 .06951

8566 30.094 20.532 .68227 .50519 .19919 .08334 9570 36.546 24.125 .66012 .46252 .17897 .11474

8583 32.629 21.045 .64496 .44711 .16571 .09105 9574 53.727 19.255 .35838 .10922 .19657 .06217

8584 29.208 19.405 .66436 .47698 .18146 .09474 9588 34.340 23.304 .67864 .49822 .20564 .10866

8623 32.096 20.746 .64636 .45533 .17061 .08733 9665 35.701 23.094 .64688 .45827 .17887 .09915

8625 35.384 21.972 .62097 .43127 .15527 .07445 9715 36.021 23.513 .65276 .47095 .19207 .10487

8630 24.375 16.399 .67279 .51338 .22661 .11916 9729 39.451 24.933 .63201 .45203 .19018 .11029

8631 26.750 18.019 .67361 .50330 .20367 .09084 9772 45.213 29.728 .65752 .47588 .19909 .11216

8646 34.385 22.679 .65955 .48870 .20651 .10485 9814 40.136 26.141 .65130 .43034 .06893 -.06505

8647 33.243 22.502 .67691 .49706 .20676 .11331 9815 41.351 26.736 .64658 .47074 .20781 .12859

8677 31.155 19.891 .63845 .47006 .18188 .07660 9816 22.558 16.459 .72964 .61363 .34286 .20249

8696 85.625 63.482 .74140 .59381 .33727 .32208 9817 29.684 20.088 .67671 .50972 .22673 .12818

8743 40.906 25.885 .63278 .44360 .17848 .10931 9829 25.513 17.349 .68002 .50610 .20241 .09654

8761 26.897 18.689 .69484 .52341 .21216 .08768 9830 24.914 18.085 .72590 .60128 .31649 .15866

8778 40.145 25.666 .63933 .44467 .16747 .08911 9858 29.952 20.330 .67874 .51407 .21757 .09727

8845 37.496 24.506 .65355 .46432 .18825 .11219 9893 32.139 21.026 .65420 .46926 .18129 .09105

8859 39.225 25.363 .64661 .45773 .17681 .09411 9916 40.153 25.336 .63099 .45622 .20671 .13022

8898 35.532 22.627 .63680 .46758 .19594 .09773 9976 30.413 20.184 .66365 .48121 .19348 .10802

8908 60.941 37.838 .62090 .34357 .04808 .12377

Appendix 4–3.7. L-moments of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)

Station

no.

Duration

mean

(hours)

Duration

L-scale

(hours)

Duration

L-CV

(dimensionless)

Duration

L-skew

(dimensionless)

Duration

L-kurtosis

(dimensionless)

Duration

Tau5

(dimensionless)
Appendix 4 243

Appendix 4–4.1. Empirical distribution of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- 0.01 0.01 0.03 0.13 0.46 -- -- 1154 0.01 0.01 0.01 0.03 0.11 0.42 1.09 2.96 3.27

0016 0.01 0.01 .01 .04 .15 .49 1.02 2.20 2.82 1165 .01 .01 .03 .07 .19 .53 1.11 2.10 2.46

0050 .01 .02 .04 .09 .26 .68 1.28 2.35 2.78 1185 .02 .02 .05 .08 .20 .50 .99 1.85 2.21

0054 -- .02 .03 .05 .15 .38 .92 1.79 -- 1186 .01 .01 .03 .06 .20 .56 1.28 3.66 4.93

0120 -- -- .04 .10 .37 .79 2.12 -- -- 1188 -- -- .03 .05 .20 .50 1.39 -- --

0145 .01 .01 .01 .03 .10 .32 1.01 2.13 2.73 1245 -- -- .05 .07 .17 .50 1.50 -- --

0146 -- .01 .02 .05 .16 .59 1.03 1.52 -- 1246 .10 .10 .10 .10 .20 .60 1.20 2.70 3.55

0174 .03 .04 .10 .10 .18 .40 .70 1.80 2.36 1267 .01 .01 .03 .06 .16 .45 .91 2.07 2.95

0178 -- -- .02 .05 .07 .28 .95 -- -- 1304 .01 .02 .04 .07 .21 .57 1.20 2.86 3.52

0179 .01 .02 .03 .06 .15 .37 .80 1.52 1.72 1325 .02 .02 .04 .08 .23 .73 1.54 3.32 4.35

0202 .10 .10 .10 .10 .20 .60 1.20 2.30 3.40 1429 .01 .02 .05 .10 .24 .64 1.31 2.70 3.49

0206 .03 .05 .10 .10 .30 .70 1.30 2.70 3.40 1431 .01 .02 .05 .10 .24 .70 1.49 3.15 3.71

0208 -- -- -- .06 .16 .41 -- -- -- 1432 .01 .02 .04 .08 .26 .71 1.49 3.00 3.60

0211 .01 .01 .01 .03 .11 .36 .84 1.86 2.40 1433 .02 .02 .05 .10 .28 .69 1.43 2.98 3.77

0244 -- .02 .03 .08 .32 .73 1.22 1.63 -- 1434 .02 .02 .05 .10 .25 .71 1.47 3.00 3.76

0248 .02 .03 .05 .10 .19 .40 .90 1.92 2.40 1435 .01 .02 .04 .09 .27 .75 1.53 2.96 3.61

0262 .02 .02 .05 .10 .30 .77 1.45 3.06 3.74 1436 .02 .02 .05 .10 .28 .73 1.46 3.07 3.75

0271 -- -- .03 .07 .40 .94 2.02 -- -- 1437 -- -- .02 .03 .10 .69 1.61 -- --

0380 .02 .02 .05 .08 .25 .74 1.62 4.15 6.06 1438 .01 .02 .04 .09 .25 .71 1.47 3.02 3.51

0394 -- -- .03 .12 .28 .65 1.34 -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- .04 .16 .65 1.03 2.05 -- -- 1492 .02 .03 .10 .10 .20 .60 1.20 2.58 3.30

0427 -- .10 .10 .10 .10 .50 1.42 2.65 -- 1500 -- -- .04 .08 .24 1.08 1.52 -- --

0428 .01 .01 .01 .03 .13 .48 1.14 2.64 3.60 1528 .02 .03 .07 .10 .20 .54 1.20 2.77 3.59

0429 .01 .01 .01 .03 .17 .52 1.33 2.73 3.98 1541 -- .10 .10 .10 .30 1.02 1.59 3.96 --

0463 .02 .03 .05 .10 .29 .59 1.10 3.30 3.62 1569 .01 .01 .02 .05 .20 .53 1.17 2.77 7.03

0493 -- -- .20 .35 .57 .99 1.78 -- -- 1632 -- -- -- .05 .50 .90 -- -- --

0495 .01 .01 .03 .07 .17 .42 .75 1.71 2.06 1641 .01 .02 .05 .08 .22 .59 .94 2.12 2.65

0496 -- -- .02 .05 .15 .32 .67 -- -- 1646 .03 .03 .10 .10 .20 .45 .98 1.89 2.45

0498 -- -- .03 .04 .20 .26 .29 -- -- 1663 -- .10 .10 .10 .30 1.10 2.20 5.88 --

0509 .02 .02 .05 .10 .20 .60 1.35 2.80 3.87 1671 .02 .02 .06 .10 .20 .63 1.40 2.90 3.69

0518 .02 .02 .10 .10 .26 .70 1.40 2.82 3.64 1680 .02 .02 .05 .09 .27 .69 1.39 2.68 3.44

0521 -- -- .03 .07 .20 .49 1.58 -- -- 1694 .10 .10 .10 .10 .20 .60 1.10 2.00 2.61

0556 .02 .02 .05 .11 .25 .65 1.32 2.62 5.00 1696 .01 .02 .04 .08 .23 .56 1.06 2.34 2.69

0569 .02 .02 .07 .10 .24 .70 1.60 3.67 4.87 1697 -- .03 .05 .08 .21 .55 1.08 2.33 --

0572 .01 .02 .04 .08 .23 .66 1.45 3.20 4.10 1698 .01 .01 .09 .10 .20 .50 1.00 2.27 2.90

0576 .01 .01 .02 .04 .11 .48 1.08 3.79 4.76 1720 .10 .10 .10 .10 .10 .50 1.30 3.00 3.20

0580 .01 .02 .03 .07 .19 .65 1.37 3.66 4.52 1761 .01 .01 .01 .04 .12 .41 .65 1.47 2.05

0587 .01 .01 .04 .07 .24 .74 1.54 3.30 4.53 1773 .03 .04 .10 .10 .30 .80 1.57 3.20 3.94

0605 .03 .05 .10 .20 .35 .80 1.24 2.74 3.09 1810 -- -- .03 .10 .19 .47 1.28 -- --

0639 .02 .03 .10 .10 .20 .60 1.30 2.81 3.57 1823 -- -- .03 .08 .33 1.30 1.83 -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 .02 .02 .04 .10 .27 .75 1.55 2.60 3.24

0665 .01 .02 .04 .08 .25 .70 1.42 2.96 3.95 1875 -- -- .14 .23 .46 1.25 2.32 -- --

0689 .02 .02 .05 .10 .21 .60 1.35 3.01 3.95 1876 -- .02 .05 .10 .27 .78 1.79 3.15 --

0690 .10 .10 .10 .10 .20 .50 1.10 2.30 3.32 1889 .01 .01 .01 .02 .11 .48 .98 2.74 3.44

0691 .01 .02 .04 .09 .25 .69 1.37 2.72 3.42 1903 .10 .10 .10 .10 .20 .50 1.00 2.00 3.00

0708 .10 .10 .10 .10 .20 .50 1.24 2.39 4.42 1914 -- -- .09 .16 .32 .86 1.33 -- --

0738 .01 .02 .05 .10 .27 .70 1.36 2.77 3.75 1920 .02 .02 .06 .11 .30 .74 1.34 2.61 3.79

0776 .02 .02 .05 .10 .19 .50 1.04 2.23 2.97 1921 .02 .03 .08 .10 .30 .80 1.50 3.20 4.20

0779 .10 .10 .10 .10 .20 .50 .99 2.40 2.90 1937 .02 .02 .05 .10 .33 .83 1.50 3.14 3.82

0784 .02 .02 .06 .10 .20 .47 1.00 2.34 3.00 1956 .02 .02 .05 .10 .29 .71 1.49 3.00 4.10

0786 .01 .01 .02 .03 .13 .37 .84 1.92 2.44 1970 -- -- .04 .08 .38 1.16 2.24 -- --

0917 .02 .02 .05 .10 .31 .83 1.67 3.52 4.91 2014 .01 .01 .01 .02 .09 .42 1.10 2.85 3.73

0923 -- -- .04 .30 .61 1.33 2.71 -- -- 2015 .01 .01 .01 .03 .11 .44 1.12 2.72 3.94

0926 .02 .02 .05 .10 .24 .68 1.38 2.65 3.49 2019 -- -- .07 .12 .50 1.04 1.98 -- --

0950 -- -- .04 .05 .15 .30 .61 -- -- 2024 .02 .03 .05 .10 .30 .72 1.37 2.96 3.59

0996 -- -- .06 .14 .43 1.00 2.14 -- -- 2042 -- -- .02 .08 .11 .21 .25 -- --

1013 .10 .10 .10 .10 .20 .50 1.10 3.68 5.54 2043 .01 .01 .02 .05 .10 .27 .59 .81 1.75

1017 .01 .02 .05 .10 .20 .57 1.10 2.25 2.99 2048 .02 .03 .08 .10 .19 .50 1.20 2.72 3.40

1042 -- -- .05 .36 .53 1.03 2.67 -- -- 2050 -- .01 .01 .03 .08 .20 1.13 2.67 --

1048 -- -- .04 .17 .35 .86 1.47 -- -- 2051 -- .02 .05 .08 .20 .62 .98 2.93 --

1053 .01 .02 .04 .07 .20 .54 1.20 2.51 3.25 2053 -- -- .02 .04 .09 .15 .93 -- --

1057 .02 .02 .04 .09 .23 .53 1.05 2.00 2.42 2073 .02 .02 .04 .08 .25 .67 1.38 2.94 3.75

1063 -- -- .05 .17 .45 .98 2.37 -- -- 2082 .01 .02 .05 .10 .17 .42 .89 2.00 2.50

1068 .02 .03 .06 .10 .29 .70 1.40 2.83 3.52 2086 .02 .03 .06 .10 .28 .70 1.40 2.80 3.40

1080 .01 .02 .04 .07 .18 .39 .71 1.70 2.42 2088 -- .10 .10 .10 .20 .90 1.60 3.44 --

1081 .02 .02 .04 .10 .29 .73 1.45 2.62 3.82 2090 .10 .10 .10 .10 .30 .70 1.31 2.70 4.00

1133 -- -- .01 .01 .08 .32 .63 -- -- 2096 .02 .03 .07 .10 .28 .70 1.35 2.80 3.63

1136 .01 .01 .01 .02 .09 .34 .96 2.59 3.56 2128 .01 .02 .05 .10 .25 .76 1.36 2.92 4.24

1138 -- -- .10 .19 .49 .90 1.54 -- -- 2131 .02 .03 .10 .10 .20 .60 1.20 2.40 3.28

1139 .01 .01 .04 .08 .24 .66 1.61 3.00 3.23 2142 -- -- .03 .15 .62 1.28 2.38 -- --

Appendix 4–4.1. Empirical distribution of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
244 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 0.01 0.03 0.12 0.39 0.64 -- -- 3463 -- 0.01 0.03 0.06 0.25 0.63 1.65 5.14 --

2206 0.02 0.02 .05 .10 .30 .78 1.67 3.19 4.40 3476 0.01 .02 .04 .09 .25 .65 1.30 2.65 3.54

2238 .01 .01 .01 .03 .10 .38 .87 1.75 2.05 3485 -- -- .06 .10 .17 1.41 2.42 -- --

2240 .01 .01 .01 .04 .14 .41 .76 1.94 2.02 3507 .05 .07 .10 .10 .20 .70 1.40 2.96 3.53

2242 .01 .01 .02 .05 .20 .65 1.31 2.47 3.25 3546 .02 .02 .06 .10 .30 .80 1.60 3.29 4.00

2244 .01 .01 .02 .10 .20 .61 1.34 2.85 3.70 3547 .02 .02 .05 .11 .30 .77 1.47 2.59 2.99

2247 -- .01 .02 .05 .18 .58 1.33 3.53 -- 3579 -- .02 .04 .09 .23 .84 1.65 2.90 --

2309 .02 .03 .08 .15 .38 .81 1.45 3.17 4.42 3642 .02 .02 .07 .10 .28 .72 1.45 3.00 3.79

2312 .04 .07 .10 .10 .30 .79 1.37 2.70 3.46 3646 .02 .03 .05 .10 .28 .69 1.31 2.90 3.89

2334 -- .02 .06 .14 .55 1.13 2.39 4.39 -- 3668 -- -- .10 .33 .68 1.27 2.54 -- --

2336 .02 .03 .05 .15 .35 .85 1.35 2.25 3.60 3673 -- -- .03 .06 .30 1.10 1.51 -- --

2354 -- -- .04 .06 .12 .51 .76 -- -- 3686 .03 .05 .10 .10 .20 .70 1.40 2.40 3.10

2355 -- .01 .03 .05 .16 .54 1.54 4.31 -- 3691 .02 .03 .10 .10 .24 .64 1.30 2.70 3.20

2357 .01 .01 .01 .02 .07 .36 .96 2.56 3.59 3734 -- -- .03 .09 .38 1.22 3.24 -- --

2360 .01 .01 .01 .03 .09 .36 .96 2.35 3.09 3771 .10 .10 .10 .10 .20 .70 1.40 3.14 3.90

2361 .02 .02 .04 .10 .15 .47 .86 2.00 4.21 3789 .01 .01 .03 .06 .11 .24 .46 1.02 2.02

2394 .02 .02 .04 .10 .27 .71 1.43 2.90 3.93 3826 .01 .02 .05 .13 .32 .73 1.28 2.41 2.66

2404 .02 .02 .05 .10 .25 .70 1.34 2.91 3.59 3831 .02 .03 .05 .10 .28 .81 1.39 2.96 3.74

2415 .02 .02 .05 .11 .34 .86 1.66 3.36 4.08 3841 .02 .02 .05 .12 .29 .81 1.48 3.34 4.75

2462 .02 .03 .06 .10 .30 .84 1.61 3.14 3.91 3871 .01 .02 .04 .08 .23 .63 1.19 2.27 3.16

2528 .03 .03 .05 .09 .24 .64 1.36 2.55 2.77 3884 -- -- .06 .09 .24 .96 2.98 -- --

2617 .01 .01 .03 .07 .21 .50 1.01 2.67 3.35 3941 -- .02 .03 .06 .35 1.00 1.71 3.15 --

2619 .02 .02 .05 .10 .23 .54 1.05 2.16 2.94 3963 -- -- -- .03 .05 .10 -- -- --

2621 .02 .02 .05 .10 .23 .57 1.15 2.26 2.70 4040 .02 .02 .05 .10 .26 .62 1.23 2.48 3.13

2675 .02 .03 .09 .10 .25 .70 1.37 3.07 3.83 4058 -- -- .05 .08 .42 .86 2.16 -- --

2676 .10 .10 .10 .10 .20 .60 1.40 2.80 3.78 4098 .03 .04 .10 .10 .20 .40 .80 1.70 2.10

2679 .01 .02 .05 .10 .13 .50 1.20 2.88 3.98 4100 .02 .02 .04 .07 .21 .59 1.27 2.30 4.01

2715 .02 .02 .05 .10 .28 .70 1.31 2.66 3.47 4137 .10 .10 .10 .10 .20 .70 1.30 2.43 3.10

2744 .02 .02 .05 .10 .21 .60 1.17 2.30 3.02 4191 .02 .02 .05 .10 .20 .57 1.30 2.85 3.58

2758 .01 .01 .02 .03 .09 .29 1.17 3.29 4.38 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- .01 .04 .16 .66 1.61 -- -- 4257 .03 .05 .10 .10 .30 .80 1.60 3.30 4.30

2797 .01 .01 .01 .02 .08 .22 .50 1.12 1.52 4258 .10 .10 .10 .10 .20 .70 1.20 2.56 4.18

2811 .01 .02 .05 .10 .20 .50 1.10 2.30 2.98 4278 .02 .02 .05 .09 .27 .74 1.46 2.99 3.64

2813 -- -- .05 .09 .30 .58 1.37 -- -- 4299 .01 .03 .05 .10 .25 .43 .72 1.17 1.24

2814 -- -- .01 .03 .04 .13 .92 -- -- 4300 .01 .01 .01 .04 .16 .57 1.31 2.84 3.66

2815 .10 .10 .10 .10 .20 .50 1.06 2.70 3.44 4305 .01 .01 .01 .03 .14 .52 1.26 2.94 3.57

2818 .02 .02 .04 .09 .30 .68 1.30 3.03 3.46 4307 .01 .01 .01 .04 .18 .58 1.26 2.68 3.69

2986 .01 .02 .05 .10 .35 1.03 1.71 2.77 3.57 4309 .01 .02 .04 .08 .26 .77 1.55 3.26 4.46

3005 .02 .02 .06 .10 .26 .69 1.30 2.56 3.24 4311 .01 .02 .04 .10 .29 .80 1.69 3.34 4.39

3033 .02 .02 .04 .07 .13 .30 .55 1.16 1.83 4313 .01 .01 .04 .08 .25 .74 1.60 3.91 5.20

3034 -- -- -- -- .43 -- -- -- -- 4319 .02 .02 .05 .10 .25 .75 1.30 2.36 3.34

3047 -- -- .03 .05 .34 .72 1.32 -- -- 4329 .02 .02 .05 .10 .29 .75 1.60 3.48 4.45

3103 -- -- .05 .10 .24 .82 1.93 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 .02 .02 .06 .10 .30 .79 1.46 3.00 3.86 4375 .10 .10 .10 .10 .20 .60 1.20 2.90 4.31

3156 .04 .05 .10 .10 .30 .70 1.61 4.37 5.90 4392 .01 .01 .04 .08 .28 .87 1.71 3.55 4.24

3171 .02 .02 .05 .10 .28 .71 1.40 2.98 3.99 4425 .03 .03 .08 .10 .15 .40 .89 1.90 2.45

3189 .01 .01 .03 .06 .13 .35 .70 1.45 2.35 4440 .02 .02 .04 .07 .22 .60 1.20 2.61 3.09

3260 .01 .01 .03 .07 .25 .70 1.25 2.39 3.46 4476 .03 .04 .10 .10 .26 .65 1.24 2.64 3.20

3267 .01 .01 .02 .05 .15 .55 .97 2.75 3.69 4498 -- -- .02 .03 .13 .28 .57 -- --

3270 .04 .07 .10 .10 .20 .50 1.10 2.27 3.12 4517 .02 .02 .04 .09 .26 .69 1.30 2.65 3.34

3272 -- -- .02 .04 .06 .12 .32 -- -- 4520 .10 .10 .10 .10 .20 .60 1.30 2.50 3.30

3277 -- -- .02 .02 .08 .21 .46 -- -- 4525 -- -- .04 .06 .25 .78 2.44 -- --

3278 .02 .02 .05 .10 .20 .50 1.00 2.07 2.50 4563 -- -- .03 .06 .29 .60 1.52 -- --

3280 .01 .01 .03 .05 .13 .35 .77 1.82 1.95 4570 .02 .02 .06 .10 .20 .50 1.10 2.34 2.80

3281 -- -- .04 .11 .23 .49 .92 -- -- 4577 .02 .03 .09 .10 .33 .80 1.50 2.92 3.79

3283 .01 .01 .01 .04 .18 .57 1.26 2.63 3.11 4591 .01 .02 .04 .10 .27 .70 1.47 3.09 3.89

3284 .01 .01 .06 .10 .22 .65 1.30 2.61 3.48 4670 .02 .02 .05 .10 .20 .50 1.10 2.20 2.84

3285 .03 .06 .10 .10 .20 .70 1.40 2.60 3.20 4671 .01 .01 .02 .04 .15 .48 .92 2.04 2.59

3329 .01 .02 .04 .08 .20 .57 1.22 2.70 3.53 4679 .03 .04 .10 .10 .20 .70 1.30 2.82 3.90

3335 .01 .02 .04 .10 .30 .85 1.66 4.12 6.78 4696 -- -- .05 .10 .27 .66 1.13 -- --

3370 .02 .02 .05 .12 .33 .82 1.55 3.22 3.85 4703 .01 .02 .04 .08 .16 .51 1.07 2.21 2.93

3410 .03 .04 .10 .10 .20 .51 1.01 2.20 2.90 4704 .02 .02 .04 .08 .29 .84 1.82 4.04 4.55

3415 .02 .02 .08 .10 .24 .67 1.32 2.60 3.52 4731 .01 .01 .01 .03 .14 .41 .95 2.91 5.75

3430 .01 .01 .01 .04 .15 .56 1.26 2.99 4.14 4792 .10 .10 .10 .10 .20 .70 1.30 2.59 3.10

3431 .01 .01 .01 .04 .12 .50 1.23 3.26 4.08 4819 .10 .10 .10 .10 .30 .80 1.50 3.07 3.76

3441 -- -- .04 .09 .30 .74 1.61 -- -- 4852 -- -- .17 .35 .50 1.07 2.38 -- --

3442 .02 .02 .04 .07 .17 .43 .94 1.85 2.37 4866 .02 .02 .06 .10 .30 .75 1.40 2.80 3.57

3446 .02 .03 .05 .10 .22 .52 1.07 2.02 2.71 4876 .10 .10 .10 .10 .30 .80 1.90 4.15 4.53

3460 -- -- .04 .08 .41 .90 1.45 -- -- 4878 .01 .02 .05 .10 .30 .82 1.68 3.86 4.77

3462 .02 .02 .05 .10 .21 .50 1.05 1.86 2.89 4880 .02 .02 .05 .10 .20 .50 .95 1.92 2.56

Appendix 4–4.1. Empirical distribution of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 245

4920 0.02 0.03 0.06 0.10 0.20 0.60 1.30 2.83 3.73 5957 0.02 0.03 0.10 0.10 0.29 0.70 1.34 2.57 3.44

4934 -- -- -- .07 .12 .23 -- -- -- 5958 .01 .01 .03 .09 .25 .62 1.22 2.31 3.07

4972 .02 .03 .07 .10 .23 .60 1.20 2.70 3.42 5973 .01 .01 .02 .04 .09 .39 .97 2.93 3.40

4973 .02 .03 .07 .15 .40 .91 1.65 3.00 3.69 5996 .02 .02 .06 .10 .21 .61 1.25 2.64 3.22

4974 .02 .02 .05 .10 .20 .50 1.00 2.14 2.50 6017 .01 .01 .02 .04 .13 .42 1.04 2.51 2.80

4975 .10 .10 .10 .10 .30 .80 1.50 2.90 4.20 6024 .02 .02 .04 .10 .32 1.02 1.99 4.34 6.22

4978 .02 .02 .03 .05 .18 .53 1.48 3.06 4.91 6050 -- -- .06 .18 .35 .95 1.70 -- --

4979 -- -- .06 .11 .50 1.15 2.51 -- -- 6104 .02 .02 .05 .10 .16 .40 .80 1.58 2.08

4982 .02 .02 .05 .10 .25 .60 1.18 2.44 3.01 6108 .02 .03 .10 .10 .30 .83 1.64 3.20 4.34

5018 .02 .02 .05 .10 .29 .72 1.32 2.22 2.83 6136 .02 .03 .09 .10 .18 .40 .83 1.79 2.30

5048 .02 .03 .07 .10 .14 .48 1.00 2.30 3.14 6166 .01 .01 .03 .05 .12 .38 1.03 1.77 2.84

5049 .10 .10 .10 .10 .20 .40 .80 3.78 4.93 6176 .01 .02 .04 .09 .30 .79 1.76 3.84 4.85

5056 -- -- -- .20 .37 .69 -- -- -- 6177 .02 .03 .10 .10 .30 .80 1.60 3.38 4.30

5057 .01 .01 .01 .03 .08 .27 .79 2.18 2.90 6210 .02 .03 .10 .10 .30 .72 1.48 3.06 4.00

5060 .01 .01 .02 .04 .15 .55 1.26 3.40 5.98 6211 .01 .01 .03 .07 .24 .70 1.43 2.91 4.04

5081 .01 .02 .04 .09 .30 .78 1.48 2.90 3.67 6270 .10 .10 .10 .10 .30 .80 1.60 3.50 4.10

5094 .02 .02 .10 .10 .29 .70 1.40 3.00 3.71 6275 -- -- -- -- .00 -- -- -- --

5113 .02 .02 .05 .10 .20 .55 1.30 2.90 3.79 6276 -- -- .09 .18 .46 1.09 2.27 -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 .02 .02 .05 .10 .30 .80 1.48 2.79 3.37

5123 -- -- .06 .14 .25 .80 1.94 -- -- 6434 -- -- .05 .10 .32 .73 1.47 -- --

5192 .02 .02 .06 .10 .30 .73 1.50 3.08 3.50 6504 .02 .03 .07 .10 .20 .47 .97 1.95 2.85

5193 .02 .02 .05 .10 .20 .66 1.40 2.77 3.63 6558 -- -- .05 .06 .41 .83 1.15 -- --

5224 .01 .02 .04 .10 .31 .80 1.60 3.37 4.60 6615 .08 .10 .10 .10 .20 .50 1.05 2.30 3.50

5228 .01 .02 .04 .08 .24 .77 1.48 2.85 3.45 6660 .02 .02 .05 .09 .26 .73 1.35 3.50 3.76

5235 -- -- .03 .05 .28 .60 1.34 -- -- 6663 .01 .01 .04 .10 .20 .55 1.35 2.72 3.08

5247 .02 .03 .08 .10 .20 .50 1.00 1.94 2.40 6734 .01 .01 .03 .05 .18 .51 1.00 2.26 3.04

5258 .02 .02 .05 .10 .28 .72 1.45 2.92 3.76 6736 .02 .03 .08 .10 .20 .50 1.10 2.37 3.10

5303 .01 .02 .04 .07 .20 .60 1.24 2.68 4.20 6740 -- -- .10 .18 .58 1.35 3.05 -- --

5312 .03 .04 .10 .10 .20 .60 1.15 2.40 3.34 6750 .01 .01 .01 .04 .22 .61 1.34 3.25 7.14

5341 -- -- .07 .20 .36 1.20 1.70 -- -- 6757 .01 .01 .04 .10 .25 .73 1.44 2.92 3.60

5342 -- -- -- -- .00 -- -- -- -- 6775 .01 .01 .03 .06 .19 .48 .91 2.10 2.88

5348 .03 .05 .10 .10 .30 .80 1.66 2.90 3.42 6776 .02 .03 .08 .10 .20 .50 .96 2.00 2.70

5358 .02 .02 .05 .10 .20 .56 1.16 2.40 2.80 6788 .02 .02 .04 .10 .35 .75 1.62 3.55 4.56

5398 .02 .02 .05 .10 .30 .75 1.50 3.04 3.99 6792 .02 .02 .05 .10 .17 .40 .80 1.56 1.96

5410 .02 .02 .05 .10 .20 .50 .92 2.21 3.02 6794 -- -- .02 .20 .55 1.44 2.84 -- --

5411 .01 .01 .01 .03 .11 .36 .85 1.86 2.56 6834 .10 .10 .10 .10 .30 .80 1.60 3.11 4.00

5424 .01 .01 .01 .03 .14 .61 1.52 2.85 3.18 6893 .02 .03 .07 .10 .12 .30 .70 1.60 2.35

5429 .02 .02 .03 .07 .20 .60 1.30 2.66 4.21 6935 .02 .03 .10 .10 .20 .46 .90 2.00 2.90

5431 -- -- .13 .25 .46 .96 2.69 -- -- 6981 .01 .02 .05 .10 .28 .71 1.39 2.79 4.56

5461 .01 .02 .05 .10 .31 .85 1.59 3.40 4.10 7020 .01 .01 .02 .06 .24 .71 1.37 3.17 5.22

5463 .10 .10 .10 .10 .30 .70 1.60 3.05 3.80 7060 .02 .03 .10 .10 .20 .53 1.20 2.30 2.83

5471 -- -- .01 .02 .06 .11 .38 -- -- 7066 .02 .03 .08 .10 .30 .80 1.60 3.11 3.90

5477 -- -- .08 .15 .28 .60 1.94 -- -- 7074 .02 .02 .05 .10 .20 .43 .90 2.30 2.83

5528 .02 .03 .06 .12 .34 .85 1.56 3.21 3.96 7097 .02 .02 .05 .10 .22 .55 1.33 3.14 3.52

5579 -- -- -- -- .28 -- -- -- -- 7116 .02 .02 .03 .07 .20 .53 1.03 2.28 3.03

5580 -- -- .05 .11 .42 .84 1.39 -- -- 7140 .01 .02 .04 .09 .22 .70 1.59 3.65 4.98

5589 .01 .01 .02 .05 .15 .36 .66 1.11 1.43 7173 .01 .01 .01 .04 .17 .65 1.51 4.49 5.78

5590 .01 .02 .03 .06 .14 .36 .83 1.41 1.81 7174 .01 .01 .01 .04 .19 .65 1.45 3.55 4.77

5591 .02 .02 .04 .09 .20 .43 .76 1.45 1.67 7213 .02 .02 .05 .10 .29 .73 1.44 3.21 4.03

5592 .01 .02 .03 .06 .15 .35 .64 1.56 1.89 7243 .02 .03 .08 .10 .20 .60 1.15 2.40 3.00

5594 .01 .02 .03 .07 .15 .34 .72 1.79 1.89 7262 .01 .01 .02 .04 .10 .26 .51 .99 1.10

5595 -- -- -- -- .03 -- -- -- -- 7274 .03 .04 .10 .14 .35 .76 1.40 2.93 4.05

5596 .10 .10 .10 .10 .20 .40 .80 1.60 1.95 7300 .02 .02 .04 .10 .27 .70 1.30 2.65 3.25

5600 .01 .02 .04 .07 .16 .40 .76 1.85 2.26 7311 -- -- .10 .14 .28 .71 1.77 -- --

5618 -- -- .05 .11 .29 .84 1.56 -- -- 7363 -- -- .04 .10 .45 .94 1.46 -- --

5650 -- -- .07 .17 .42 .56 1.41 -- -- 7422 .01 .02 .05 .10 .20 .60 1.30 2.83 3.74

5656 .08 .10 .10 .10 .20 .50 1.00 2.10 2.90 7431 .02 .02 .05 .10 .20 .50 .99 2.09 2.67

5658 .02 .02 .04 .07 .20 .51 .99 2.29 3.36 7481 .02 .02 .05 .10 .12 .34 .80 1.89 2.49

5661 .10 .10 .10 .10 .20 .55 1.20 3.48 5.85 7497 .10 .10 .10 .10 .20 .60 1.30 2.74 3.32

5666 -- -- .04 .06 .25 .56 1.14 -- -- 7498 .06 .09 .10 .10 .20 .70 1.38 2.61 4.84

5695 .02 .02 .05 .10 .30 .76 1.45 2.93 3.65 7499 .03 .05 .10 .10 .24 .60 1.20 2.48 3.00

5742 -- -- .02 .04 .09 .30 .71 -- -- 7531 .01 .02 .04 .09 .30 .70 1.39 2.29 3.08

5766 -- -- .03 .10 .24 .81 2.21 -- -- 7534 .01 .02 .04 .07 .25 .63 1.25 3.22 3.83

5770 .02 .02 .05 .10 .20 .50 1.00 2.20 3.00 7556 .02 .03 .10 .10 .25 .68 1.30 2.84 3.70

5775 -- -- .05 .06 .18 .70 .92 -- -- 7594 .02 .02 .05 .11 .34 .85 1.61 3.30 3.93

5779 -- -- .03 .07 .23 .50 1.90 -- -- 7596 .01 .02 .04 .09 .34 1.05 1.90 3.08 3.90

5840 .02 .02 .05 .09 .26 .70 1.45 2.76 3.22 7608 .01 .01 .02 .06 .21 .65 1.36 2.76 3.39

5890 .01 .01 .01 .03 .10 .35 .82 1.90 2.39 7622 -- -- .01 .01 .04 .13 .70 -- --

5891 .02 .02 .04 .08 .20 .50 .92 1.80 1.96 7700 .01 .02 .04 .08 .26 .75 1.52 3.29 4.15

5897 .10 .10 .10 .10 .20 .70 1.40 3.00 3.70 7706 .01 .02 .05 .10 .20 .52 1.11 2.40 3.20

Appendix 4–4.1. Empirical distribution of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
246 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 0.01 0.02 0.05 0.10 0.25 0.61 1.60 2.96 4.38 8910 -- -- 0.05 0.10 0.39 1.10 1.87 -- --

7745 .01 .01 .03 .08 .25 .75 1.69 3.71 4.19 8911 0.01 0.01 .03 .06 .20 .59 1.27 2.70 3.44

7922 .01 .01 .02 .05 .12 .29 .63 1.18 1.88 8924 .02 .02 .04 .07 .17 .34 .75 1.43 1.76

7936 .02 .03 .10 .10 .30 .84 1.60 3.18 4.29 8929 -- -- .04 .10 .26 1.56 2.20 -- --

7943 .01 .01 .01 .03 .12 .40 .95 2.05 2.68 8942 .03 .06 .10 .10 .30 .80 1.60 3.40 4.40

7944 -- .01 .01 .03 .11 .39 .92 2.25 -- 8944 .01 .01 .03 .08 .26 .72 1.39 2.67 3.89

7945 .01 .01 .01 .03 .11 .43 1.05 2.64 3.66 8996 .01 .02 .04 .08 .24 .66 1.43 3.02 3.79

7947 .03 .04 .10 .10 .20 .62 1.40 3.53 4.84 9014 -- -- .07 .19 .41 .95 1.84 -- --

7948 .01 .02 .03 .07 .20 .58 1.33 3.07 3.97 9037 .02 .02 .04 .06 .15 .31 .68 1.60 2.22

7951 .02 .02 .05 .11 .32 .80 1.52 2.74 3.35 9106 .01 .02 .03 .05 .11 .27 .55 1.74 2.44

7953 .01 .01 .02 .05 .15 .45 1.18 2.95 3.03 9107 -- -- .03 .06 .14 .48 .80 -- --

7981 .02 .02 .03 .06 .23 .60 1.53 2.49 3.16 9129 .01 .01 .02 .04 .08 .31 .82 2.76 3.27

7990 .01 .01 .02 .04 .11 .49 .98 3.05 3.70 9163 .02 .02 .05 .10 .23 .60 1.25 2.63 3.28

7992 -- -- .09 .10 .28 .93 1.79 -- -- 9213 .01 .01 .02 .04 .17 .57 1.24 2.24 2.77

7997 .01 .01 .03 .07 .23 .56 1.25 2.42 2.61 9214 -- -- .08 .21 .35 1.27 1.88 -- --

7999 -- -- .01 .03 .16 .32 .86 -- -- 9222 .01 .01 .02 .04 .18 .55 1.23 2.66 3.20

8022 -- .01 .05 .05 .14 .59 1.10 2.08 -- 9248 .01 .02 .05 .09 .20 .58 1.15 2.09 2.24

8023 .02 .03 .06 .10 .20 .50 1.06 2.16 3.02 9266 -- .02 .05 .11 .24 .72 1.29 2.67 --

8047 .02 .02 .06 .10 .24 .67 1.30 2.60 3.20 9270 .02 .03 .09 .10 .14 .33 .70 1.50 2.09

8060 .01 .01 .02 .04 .12 .37 1.31 2.71 3.16 9295 .01 .01 .02 .03 .09 .24 .49 1.19 1.37

8062 -- -- .02 .05 .21 .70 2.19 -- -- 9304 -- -- -- .10 .17 .26 -- -- --

8068 -- -- .02 .03 .10 .28 .82 -- -- 9307 .02 .03 .07 .11 .29 .70 1.20 2.41 2.83

8081 .02 .02 .05 .10 .20 .60 1.27 2.87 3.82 9328 .02 .02 .04 .08 .18 .54 1.15 1.69 2.87

8089 -- -- .04 .08 .21 .62 1.17 -- -- 9329 -- -- .02 .06 .17 .97 1.23 -- --

8221 -- -- .04 .15 .41 .74 1.71 -- -- 9345 -- -- -- -- .70 -- -- -- --

8252 .02 .02 .05 .10 .20 .50 1.00 2.16 2.69 9363 .01 .01 .01 .03 .11 .42 .95 2.59 3.44

8265 .01 .02 .04 .08 .25 .70 1.55 3.42 5.76 9364 .01 .01 .01 .03 .13 .50 1.18 2.85 3.90

8289 -- .01 .03 .10 .33 .60 .98 1.48 -- 9365 -- -- .04 .07 .10 .29 .65 -- --

8305 .02 .02 .05 .10 .10 .30 .62 1.40 1.90 9371 .02 .02 .05 .09 .25 .71 1.38 2.58 2.76

8335 .02 .02 .05 .10 .35 .86 1.65 3.32 4.18 9417 .01 .02 .04 .09 .25 .70 1.42 2.77 3.25

8400 .02 .02 .03 .07 .16 .37 .77 2.04 2.93 9419 .01 .01 .01 .04 .15 .55 1.23 2.60 3.16

8445 .01 .02 .04 .07 .24 .69 1.50 3.10 4.27 9435 -- .03 .06 .10 .23 .59 1.02 2.57 --

8446 .02 .02 .09 .10 .20 .60 1.36 2.70 3.34 9491 .02 .02 .05 .10 .25 .70 1.46 2.92 3.50

8451 .01 .02 .04 .07 .20 .57 1.08 2.12 2.30 9499 .02 .03 .10 .10 .20 .54 1.10 2.30 3.12

8531 .02 .02 .05 .10 .28 .71 1.35 2.78 3.30 9522 -- -- .04 .09 .25 1.27 2.72 -- --

8541 .01 .01 .05 .10 .29 .65 1.28 2.47 3.68 9527 .03 .04 .10 .10 .20 .41 .90 1.90 2.30

8544 .02 .03 .08 .10 .26 .70 1.46 3.10 4.10 9532 .02 .02 .06 .10 .24 .69 1.26 2.70 3.52

8545 -- -- .02 .06 .21 .41 .61 -- -- 9544 -- -- -- .11 .13 2.95 -- -- --

8563 .10 .10 .10 .10 .30 .70 1.40 3.18 4.20 9565 .02 .03 .07 .10 .20 .57 1.20 2.49 3.20

8566 .01 .01 .04 .08 .22 .58 1.18 2.18 2.53 9570 .10 .10 .10 .10 .20 .50 1.10 2.30 2.94

8583 .10 .10 .10 .10 .20 .50 1.10 2.26 2.60 9574 -- -- .10 .10 .20 .50 1.40 -- --

8584 .02 .03 .08 .10 .23 .70 1.25 2.66 3.06 9588 .01 .02 .05 .10 .18 .46 1.10 2.68 3.53

8623 .03 .04 .10 .10 .30 .70 1.30 2.60 3.30 9665 .02 .02 .07 .10 .30 .76 1.50 3.08 4.01

8625 .01 .02 .04 .09 .24 .69 1.27 2.76 3.61 9715 .02 .02 .05 .10 .27 .70 1.30 2.72 3.38

8630 .02 .03 .06 .10 .20 .52 1.15 2.14 2.51 9729 .01 .01 .02 .04 .17 .55 1.17 2.47 3.00

8631 .01 .02 .05 .08 .22 .55 1.21 2.55 3.52 9772 .01 .02 .03 .07 .21 .63 1.40 3.45 4.75

8646 .02 .02 .04 .10 .26 .69 1.36 2.69 3.29 9814 -- -- .03 .09 .32 .85 1.62 -- --

8647 .02 .03 .08 .10 .16 .42 .90 2.10 2.70 9815 .02 .02 .05 .10 .23 .66 1.38 2.81 4.10

8677 .01 .02 .05 .10 .24 .62 1.25 2.51 3.03 9816 -- .01 .03 .06 .25 .74 1.27 4.22 --

8696 -- -- .06 .10 .43 .94 1.39 -- -- 9817 .03 .04 .10 .10 .23 .65 1.20 2.60 3.25

8743 .02 .02 .06 .10 .30 .80 1.55 3.46 4.34 9829 .02 .02 .05 .10 .13 .35 .80 1.80 2.27

8761 .02 .03 .10 .10 .20 .41 .87 1.90 2.72 9830 .01 .01 .03 .05 .10 .31 .72 1.34 2.17

8778 .03 .04 .10 .10 .30 .75 1.40 3.00 3.70 9858 .02 .02 .05 .10 .23 .55 .99 2.10 2.64

8845 .02 .02 .06 .10 .20 .60 1.35 3.10 3.90 9893 .02 .02 .05 .10 .22 .60 1.21 2.50 3.30

8859 .01 .02 .05 .11 .32 .85 1.57 3.14 3.84 9916 .02 .04 .10 .10 .30 .83 1.60 3.21 3.80

8898 .02 .02 .05 .11 .32 .75 1.56 3.19 4.02 9976 .01 .02 .05 .10 .20 .50 1.19 2.47 3.24

8908 -- -- .04 .08 .21 .60 1.26 -- --

Appendix 4–4.1. Empirical distribution of storm depth defined by 6-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 247

Appendix 4–4.2. Empirical distribution of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- 0.01 0.02 0.04 0.16 0.49 -- -- 1154 0.01 0.01 0.01 0.03 0.12 0.46 1.17 2.97 3.29

0016 0.01 0.01 .01 .04 .16 .52 1.07 2.35 2.90 1165 .01 .02 .03 .07 .20 .55 1.12 2.29 2.70

0050 .01 .02 .05 .10 .28 .75 1.38 2.48 2.90 1185 .02 .02 .05 .08 .20 .50 1.01 1.86 2.25

0054 -- .02 .03 .05 .15 .37 1.16 1.81 -- 1186 .01 .01 .03 .07 .20 .57 1.39 3.71 5.10

0120 -- -- .04 .10 .51 .87 2.25 -- -- 1188 -- -- .03 .09 .20 .59 1.47 -- --

0145 .01 .01 .02 .03 .13 .33 1.08 2.17 3.68 1245 -- -- .04 .08 .33 .73 1.61 -- --

0146 -- -- .02 .05 .18 .60 1.03 -- -- 1246 .10 .10 .10 .10 .20 .70 1.30 2.80 3.70

0174 .03 .04 .10 .10 .20 .40 .80 1.87 2.40 1267 .01 .01 .03 .06 .18 .48 .94 2.31 3.01

0178 -- -- .04 .05 .07 .29 .97 -- -- 1304 .01 .02 .04 .08 .24 .62 1.34 2.93 3.86

0179 .01 .02 .03 .06 .15 .40 .82 1.56 1.73 1325 .02 .02 .05 .09 .25 .76 1.62 3.47 4.54

0202 .10 .10 .10 .10 .20 .60 1.40 2.32 3.43 1429 .02 .02 .05 .10 .25 .65 1.37 3.10 3.79

0206 .04 .05 .10 .10 .30 .72 1.40 2.77 3.50 1431 .02 .02 .05 .10 .27 .75 1.52 3.28 4.08

0208 -- -- -- .06 .16 .41 -- -- -- 1432 .02 .02 .04 .09 .29 .79 1.55 3.09 3.90

0211 .01 .01 .01 .03 .12 .40 .88 1.98 2.61 1433 .02 .02 .05 .10 .30 .74 1.53 3.09 4.05

0244 -- .02 .02 .07 .30 .73 1.27 2.32 -- 1434 .02 .02 .05 .10 .28 .76 1.52 3.15 3.84

0248 .02 .03 .06 .10 .20 .44 .90 2.05 2.50 1435 .01 .02 .05 .10 .30 .80 1.61 3.10 3.82

0262 .02 .02 .05 .10 .30 .80 1.56 3.13 4.10 1436 .02 .02 .05 .10 .30 .79 1.55 3.28 3.98

0271 -- -- .05 .15 .54 1.12 2.27 -- -- 1437 -- -- .02 .03 .10 .70 1.66 -- --

0380 .02 .02 .05 .10 .28 .78 1.67 4.48 6.30 1438 .02 .02 .05 .10 .28 .77 1.58 3.06 3.69

0394 -- -- .03 .12 .28 .65 1.34 -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- .06 .22 .73 1.04 2.05 -- -- 1492 .02 .03 .10 .10 .20 .64 1.30 2.66 4.12

0427 -- .10 .10 .10 .20 .60 1.50 2.66 -- 1500 -- -- .05 .10 .35 1.27 1.58 -- --

0428 .01 .01 .01 .03 .14 .53 1.22 2.82 3.65 1528 .02 .03 .08 .10 .20 .60 1.30 2.83 3.73

0429 .01 .01 .01 .04 .19 .61 1.48 2.95 5.33 1541 -- .10 .10 .10 .30 1.10 1.66 3.97 --

0463 .03 .03 .08 .12 .30 .66 1.15 3.30 3.66 1569 .01 .01 .02 .06 .22 .56 1.19 3.01 7.09

0493 -- -- .19 .39 .62 .99 1.82 -- -- 1632 -- -- -- .05 .50 .90 -- -- --

0495 .01 .02 .03 .08 .19 .45 .78 1.78 2.07 1641 .01 .02 .05 .08 .25 .60 .97 2.13 2.67

0496 -- -- .02 .05 .15 .32 .67 -- -- 1646 .03 .04 .10 .10 .20 .50 1.00 2.00 2.58

0498 -- -- .03 .06 .20 .26 .30 -- -- 1663 -- -- .10 .10 .30 1.10 2.25 -- --

0509 .02 .03 .06 .10 .24 .69 1.43 3.15 4.00 1671 .02 .03 .07 .10 .24 .70 1.50 3.15 3.98

0518 .02 .03 .10 .10 .30 .76 1.40 2.90 3.84 1680 .02 .02 .05 .10 .28 .71 1.40 2.91 3.60

0521 -- -- .03 .10 .32 .54 1.66 -- -- 1694 .10 .10 .10 .10 .20 .70 1.20 2.14 2.67

0556 .02 .03 .05 .12 .25 .67 1.34 2.64 5.06 1696 .02 .02 .05 .09 .25 .59 1.13 2.47 3.01

0569 .02 .03 .07 .10 .28 .80 1.67 3.78 5.14 1697 -- .03 .05 .08 .21 .56 1.11 2.68 --

0572 .02 .02 .05 .09 .25 .69 1.48 3.30 4.13 1698 .01 .01 .10 .10 .20 .50 1.10 2.38 3.08

0576 .01 .01 .02 .05 .13 .53 1.11 3.94 4.80 1720 .10 .10 .10 .10 .20 .50 1.42 3.02 3.20

0580 .01 .02 .04 .09 .21 .67 1.54 3.94 4.88 1761 .01 .01 .01 .05 .14 .44 .88 1.61 2.21

0587 .01 .02 .04 .08 .25 .77 1.58 3.57 4.89 1773 .03 .04 .10 .10 .34 .90 1.61 3.40 4.00

0605 .03 .05 .10 .20 .42 .82 1.32 2.77 3.11 1810 -- -- .03 .10 .23 .51 1.34 -- --

0639 .03 .04 .10 .10 .20 .60 1.40 2.90 3.70 1823 -- -- .03 .08 .33 1.30 1.83 -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 .02 .02 .05 .10 .30 .81 1.59 2.69 3.26

0665 .01 .02 .04 .09 .27 .74 1.50 3.10 4.02 1875 -- -- .14 .23 .46 1.25 2.32 -- --

0689 .02 .02 .05 .10 .23 .65 1.44 3.07 3.98 1876 -- .02 .05 .10 .32 .80 1.82 3.15 --

0690 .10 .10 .10 .10 .20 .50 1.20 2.30 3.41 1889 .01 .01 .01 .02 .14 .54 1.11 2.81 3.46

0691 .02 .02 .04 .10 .27 .72 1.45 2.82 3.63 1903 .10 .10 .10 .10 .20 .50 1.00 2.00 3.08

0708 .10 .10 .10 .10 .20 .60 1.30 2.44 4.46 1914 -- -- .09 .17 .39 .92 1.34 -- --

0738 .01 .02 .05 .10 .30 .76 1.43 2.87 3.87 1920 .02 .03 .06 .11 .33 .80 1.40 2.70 4.12

0776 .02 .02 .05 .10 .20 .50 1.10 2.47 3.17 1921 .03 .03 .09 .10 .31 .85 1.60 3.48 4.59

0779 .10 .10 .10 .10 .20 .50 1.00 2.47 2.94 1937 .02 .03 .05 .12 .36 .89 1.59 3.28 4.25

0784 .02 .02 .06 .10 .20 .50 1.00 2.40 3.10 1956 .02 .02 .05 .10 .30 .80 1.53 3.14 4.39

0786 .01 .01 .02 .03 .14 .40 .89 1.99 2.62 1970 -- -- .04 .09 .40 1.23 2.24 -- --

0917 .02 .02 .05 .10 .34 .89 1.75 3.65 5.01 2014 .01 .01 .01 .02 .11 .44 1.21 3.01 3.75

0923 -- -- .14 .38 .61 1.47 2.96 -- -- 2015 .01 .01 .01 .03 .12 .48 1.18 2.95 4.26

0926 .02 .02 .05 .10 .27 .70 1.43 2.73 3.66 2019 -- -- .07 .12 .56 1.09 2.00 -- --

0950 -- -- .04 .06 .15 .30 .64 -- -- 2024 .02 .03 .06 .10 .30 .80 1.42 3.07 3.80

0996 -- -- .06 .15 .47 1.05 2.21 -- -- 2042 -- -- .02 .07 .13 .23 .25 -- --

1013 .10 .10 .10 .10 .20 .50 1.23 3.73 5.63 2043 -- .01 .02 .05 .12 .27 .61 1.11 --

1017 .01 .02 .05 .10 .20 .60 1.16 2.49 3.10 2048 .02 .03 .08 .10 .20 .55 1.29 2.80 3.57

1042 -- -- .05 .34 .52 .95 2.52 -- -- 2050 -- .01 .01 .02 .09 .26 1.20 2.79 --

1048 -- -- .04 .17 .35 .86 1.47 -- -- 2051 -- .02 .05 .08 .20 .69 1.14 2.99 --

1053 .02 .02 .04 .07 .22 .60 1.24 2.59 3.50 2053 -- -- .02 .04 .11 .27 .99 -- --

1057 .02 .02 .05 .09 .24 .55 1.09 2.09 2.81 2073 .02 .02 .04 .09 .25 .70 1.44 3.10 4.25

1063 -- -- .05 .18 .48 .96 2.09 -- -- 2082 .02 .02 .05 .10 .20 .48 .90 2.11 2.66

1068 .02 .03 .07 .10 .30 .75 1.48 2.87 3.61 2086 .02 .03 .07 .10 .30 .73 1.50 3.00 3.70

1080 .02 .02 .04 .08 .18 .40 .75 1.71 2.43 2088 -- .10 .10 .10 .30 1.05 1.70 3.59 --

1081 .02 .02 .05 .10 .30 .79 1.55 2.73 3.93 2090 .10 .10 .10 .10 .30 .70 1.40 2.90 4.14

1133 -- -- .01 .01 .08 .38 .70 -- -- 2096 .02 .03 .08 .10 .30 .74 1.41 2.91 3.70

1136 .01 .01 .01 .02 .10 .38 1.06 2.71 3.67 2128 .02 .02 .05 .10 .30 .81 1.48 3.21 4.34

1138 -- -- .09 .17 .64 .93 1.58 -- -- 2131 .03 .04 .10 .10 .26 .70 1.30 2.79 3.53

1139 .01 .01 .04 .08 .24 .67 1.64 3.01 3.24 2142 -- -- .07 .21 .74 1.41 2.42 -- --

Appendix 4–4.2. Empirical distribution of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
248 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 0.01 0.03 0.12 0.39 0.64 -- -- 3463 -- -- 0.03 0.07 0.28 0.77 1.79 -- --

2206 0.02 0.03 .05 .10 .32 .83 1.79 3.22 4.87 3476 0.01 0.02 .04 .09 .26 .69 1.35 2.69 3.84

2238 .01 .01 .02 .03 .10 .38 .95 2.05 2.29 3485 -- -- .06 .10 .17 1.41 2.42 -- --

2240 .01 .01 .01 .04 .14 .41 .76 1.94 2.02 3507 .05 .07 .10 .10 .21 .70 1.50 3.05 3.64

2242 .01 .01 .02 .05 .23 .68 1.39 2.63 3.46 3546 .02 .03 .06 .10 .30 .86 1.65 3.42 4.21

2244 .01 .01 .02 .10 .24 .70 1.40 3.05 3.90 3547 .02 .02 .05 .11 .30 .79 1.55 2.81 3.20

2247 -- .01 .02 .05 .18 .60 1.33 3.59 -- 3579 -- .03 .05 .12 .25 .95 1.65 3.32 --

2309 .03 .03 .08 .17 .42 .91 1.51 3.33 4.58 3642 .02 .03 .07 .10 .30 .80 1.55 3.14 3.91

2312 .04 .07 .10 .10 .34 .80 1.50 2.81 3.55 3646 .02 .03 .05 .11 .30 .72 1.39 2.97 4.12

2334 -- .02 .08 .17 .55 1.18 2.42 4.43 -- 3668 -- -- .09 .37 .76 1.32 2.82 -- --

2336 .02 .03 .05 .15 .35 .90 1.47 2.49 3.63 3673 -- -- .04 .08 .35 1.23 1.91 -- --

2354 -- -- .04 .06 .12 .52 .76 -- -- 3686 .03 .06 .10 .10 .21 .70 1.50 2.50 3.46

2355 -- .01 .03 .06 .20 .54 1.76 4.78 -- 3691 .02 .03 .10 .10 .30 .70 1.40 2.90 3.40

2357 .01 .01 .01 .02 .08 .39 1.03 2.61 3.72 3734 -- -- .03 .11 .38 1.40 3.33 -- --

2360 .01 .01 .01 .03 .10 .38 1.04 2.46 3.15 3771 .10 .10 .10 .10 .20 .70 1.50 3.34 3.90

2361 .02 .02 .04 .10 .19 .50 .91 2.28 4.41 3789 .01 .01 .03 .06 .11 .24 .46 1.02 2.02

2394 .02 .02 .05 .10 .30 .77 1.50 3.06 4.13 3826 .01 .02 .06 .13 .33 .76 1.32 2.45 2.66

2404 .02 .02 .05 .10 .26 .73 1.40 2.99 3.61 3831 .02 .03 .05 .11 .31 .82 1.46 2.98 3.76

2415 .02 .03 .06 .13 .38 .93 1.75 3.49 4.21 3841 .02 .02 .05 .14 .30 .83 1.52 3.45 4.81

2462 .02 .03 .07 .12 .33 .89 1.72 3.15 3.93 3871 .02 .02 .05 .09 .25 .67 1.25 2.41 3.19

2528 .03 .03 .05 .10 .25 .67 1.43 2.57 2.77 3884 -- -- .06 .09 .24 .96 2.98 -- --

2617 .01 .01 .04 .07 .23 .52 1.07 2.75 3.50 3941 -- .01 .04 .06 .39 1.11 1.82 3.30 --

2619 .01 .02 .05 .10 .24 .56 1.06 2.22 3.78 3963 -- -- -- .03 .05 .10 -- -- --

2621 .02 .03 .05 .10 .24 .60 1.22 2.35 2.79 4040 .02 .02 .05 .10 .28 .65 1.30 2.51 3.14

2675 .02 .03 .10 .10 .29 .71 1.48 3.21 3.95 4058 -- -- .05 .08 .42 .86 2.16 -- --

2676 .10 .10 .10 .10 .20 .70 1.50 2.91 3.91 4098 .03 .04 .10 .10 .20 .40 .90 1.88 2.16

2679 .02 .02 .05 .10 .16 .50 1.21 3.00 4.07 4100 .02 .02 .05 .08 .23 .62 1.31 2.95 4.26

2715 .02 .03 .05 .10 .30 .72 1.39 2.85 3.52 4137 .10 .10 .10 .10 .30 .70 1.30 2.70 3.40

2744 .02 .03 .05 .10 .25 .62 1.20 2.50 3.14 4191 .02 .03 .05 .10 .20 .61 1.40 2.99 3.90

2758 .01 .01 .02 .04 .11 .35 1.22 3.65 4.39 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- .01 .04 .16 .66 1.61 -- -- 4257 .03 .05 .10 .10 .35 .90 1.70 3.41 4.36

2797 .01 .01 .01 .03 .08 .23 .52 1.19 1.61 4258 .10 .10 .10 .10 .30 .70 1.30 2.68 4.35

2811 .02 .02 .06 .10 .20 .58 1.20 2.38 3.10 4278 .02 .02 .05 .10 .30 .76 1.51 3.01 3.64

2813 -- -- .05 .09 .30 .58 1.37 -- -- 4299 .01 .03 .05 .10 .25 .45 .80 1.22 1.24

2814 -- -- .01 .03 .05 .15 .96 -- -- 4300 .01 .01 .01 .04 .17 .61 1.39 3.05 4.18

2815 .10 .10 .10 .10 .20 .57 1.20 2.70 3.62 4305 .01 .01 .01 .03 .15 .57 1.34 3.05 3.97

2818 .02 .02 .04 .09 .32 .72 1.37 3.20 3.49 4307 .01 .01 .01 .04 .20 .62 1.37 2.82 4.94

2986 .02 .02 .06 .13 .42 1.12 1.83 3.46 3.86 4309 .02 .02 .05 .10 .29 .81 1.63 3.43 4.56

3005 .02 .02 .07 .10 .30 .70 1.35 2.70 3.50 4311 .01 .02 .05 .10 .31 .86 1.76 3.41 4.55

3033 .02 .02 .04 .07 .14 .30 .60 1.30 1.85 4313 .01 .02 .04 .10 .26 .75 1.75 4.11 5.38

3034 -- -- -- -- .43 -- -- -- -- 4319 .02 .03 .05 .11 .30 .78 1.31 2.37 3.38

3047 -- -- .03 .05 .34 .73 1.37 -- -- 4329 .02 .02 .05 .11 .30 .80 1.67 3.69 4.60

3103 -- -- .10 .14 .27 .93 2.02 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 .02 .03 .06 .10 .34 .80 1.52 3.30 3.95 4375 .10 .10 .10 .10 .20 .60 1.30 3.10 4.68

3156 .04 .05 .10 .10 .30 .70 1.70 4.68 5.90 4392 .01 .02 .05 .10 .35 .97 1.95 3.83 5.84

3171 .02 .03 .05 .10 .30 .77 1.50 3.07 4.06 4425 .03 .03 .08 .10 .19 .48 .95 2.00 2.57

3189 .01 .02 .03 .08 .14 .35 .74 1.48 2.39 4440 .02 .02 .04 .08 .24 .64 1.25 2.73 3.29

3260 .01 .01 .03 .08 .27 .72 1.28 2.41 3.51 4476 .03 .04 .10 .10 .30 .70 1.30 2.80 3.50

3267 .01 .01 .03 .05 .17 .56 1.05 3.47 3.88 4498 -- -- .02 .04 .14 .32 .58 -- --

3270 .05 .09 .10 .10 .20 .52 1.10 2.31 3.30 4517 .02 .02 .04 .10 .28 .73 1.35 2.75 3.43

3272 -- -- .02 .04 .09 .13 .33 -- -- 4520 .10 .10 .10 .10 .20 .60 1.30 2.76 3.33

3277 -- -- .02 .02 .08 .21 .46 -- -- 4525 -- -- .04 .06 .25 .78 2.44 -- --

3278 .02 .02 .05 .10 .20 .50 1.02 2.16 2.66 4563 -- -- .03 .06 .26 .61 1.68 -- --

3280 .01 .01 .03 .05 .12 .35 .77 1.90 2.39 4570 .02 .03 .07 .10 .20 .57 1.20 2.43 2.95

3281 -- -- .04 .10 .24 .50 .93 -- -- 4577 .02 .03 .10 .10 .39 .88 1.60 3.22 4.08

3283 .01 .01 .01 .05 .20 .60 1.31 2.81 3.65 4591 .02 .02 .05 .10 .30 .75 1.54 3.21 3.91

3284 .01 .01 .07 .10 .28 .70 1.40 2.79 3.50 4670 .02 .02 .05 .10 .20 .55 1.19 2.46 2.93

3285 .03 .07 .10 .10 .30 .70 1.50 2.70 3.32 4671 .01 .01 .02 .04 .16 .55 .93 2.08 2.63

3329 .01 .02 .04 .09 .20 .60 1.30 2.80 3.77 4679 .03 .04 .10 .10 .24 .70 1.40 3.04 4.03

3335 .01 .02 .04 .10 .33 .86 1.75 4.29 7.40 4696 -- -- .05 .10 .27 .66 1.13 -- --

3370 .02 .02 .05 .13 .35 .87 1.63 3.39 4.04 4703 .02 .02 .05 .10 .17 .53 1.17 2.32 2.98

3410 .04 .05 .10 .10 .21 .59 1.08 2.30 3.00 4704 .02 .02 .05 .11 .32 .90 1.91 4.23 5.17

3415 .02 .03 .09 .10 .30 .70 1.40 2.79 3.70 4731 .01 .01 .01 .03 .15 .43 1.03 3.04 6.19

3430 .01 .01 .01 .04 .18 .61 1.34 3.27 4.31 4792 .10 .10 .10 .10 .30 .70 1.40 2.70 3.30

3431 .01 .01 .01 .04 .13 .57 1.34 3.52 4.71 4819 .10 .10 .10 .10 .30 .90 1.54 3.60 3.78

3441 -- -- .04 .09 .30 .75 1.63 -- -- 4852 -- -- .17 .35 .50 1.07 2.38 -- --

3442 .02 .02 .04 .08 .17 .45 .95 1.95 2.50 4866 .02 .03 .07 .10 .30 .80 1.50 2.90 3.68

3446 .02 .03 .05 .10 .25 .53 1.10 2.10 2.77 4876 .10 .10 .10 .10 .30 1.00 2.02 4.22 4.61

3460 -- -- .06 .10 .41 .92 1.48 -- -- 4878 .02 .02 .05 .10 .33 .86 1.76 4.08 5.10

3462 .02 .02 .06 .10 .27 .67 1.13 1.87 2.98 4880 .02 .02 .06 .10 .20 .50 1.00 2.04 2.61

Appendix 4–4.2. Empirical distribution of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 249

4920 0.02 0.03 0.07 0.10 0.20 0.62 1.34 3.03 4.01 5957 0.02 0.03 0.10 0.10 0.30 0.70 1.40 2.70 3.50

4934 -- -- -- .09 .14 .26 -- -- -- 5958 .01 .01 .03 .10 .30 .65 1.27 2.37 3.14

4972 .02 .03 .07 .10 .27 .69 1.30 2.78 3.51 5973 .01 .01 .02 .04 .10 .41 1.06 2.97 3.80

4973 .02 .04 .08 .16 .45 .95 1.66 3.32 3.85 5996 .02 .03 .07 .10 .25 .70 1.30 2.77 3.65

4974 .02 .02 .05 .10 .20 .52 1.03 2.34 2.70 6017 .01 .01 .02 .05 .15 .48 1.21 2.55 2.83

4975 .10 .10 .10 .10 .40 .90 1.60 3.04 4.20 6024 .02 .02 .05 .10 .35 1.07 2.01 4.79 6.24

4978 .02 .02 .04 .07 .21 .58 1.52 3.07 5.01 6050 -- -- .10 .23 .38 1.01 1.72 -- --

4979 -- -- .06 .14 .50 1.09 2.75 -- -- 6104 .02 .02 .05 .10 .18 .40 .80 1.65 2.20

4982 .02 .02 .05 .10 .26 .62 1.23 2.59 3.27 6108 .02 .03 .10 .10 .40 .90 1.76 3.39 4.60

5018 .02 .02 .05 .11 .31 .77 1.39 2.47 3.17 6136 .02 .03 .10 .10 .20 .45 .90 1.81 2.40

5048 .02 .03 .08 .10 .16 .50 1.00 2.50 3.30 6166 -- .02 .04 .05 .14 .40 1.06 1.93 --

5049 .10 .10 .10 .10 .20 .50 .86 4.09 4.97 6176 .01 .02 .04 .11 .33 .80 1.84 3.92 5.26

5056 -- -- -- .20 .37 .69 -- -- -- 6177 .02 .03 .10 .10 .31 .84 1.70 3.50 4.44

5057 .01 .01 .01 .03 .09 .30 .90 2.24 3.07 6210 .02 .03 .10 .10 .30 .80 1.50 3.16 4.20

5060 .01 .01 .02 .05 .15 .56 1.29 3.59 6.09 6211 .01 .01 .03 .07 .25 .80 1.48 3.05 4.18

5081 .02 .02 .05 .10 .35 .85 1.59 2.98 3.91 6270 .10 .10 .10 .10 .40 .90 1.70 3.60 4.36

5094 .02 .03 .10 .10 .30 .75 1.50 3.20 3.80 6275 -- -- -- -- .00 -- -- -- --

5113 .02 .02 .06 .10 .20 .60 1.36 3.10 3.90 6276 -- -- .09 .18 .46 1.32 2.27 -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 .02 .02 .05 .10 .32 .84 1.51 2.90 3.45

5123 -- -- .07 .19 .32 .93 1.97 -- -- 6434 -- -- .05 .10 .32 .73 1.47 -- --

5192 .02 .02 .06 .10 .30 .80 1.59 3.10 3.71 6504 .02 .03 .07 .10 .20 .50 1.00 2.10 2.90

5193 .02 .02 .05 .10 .25 .70 1.45 3.00 3.83 6558 -- -- .05 .06 .41 .88 1.69 -- --

5224 .01 .02 .04 .10 .33 .93 1.70 3.76 4.63 6615 .09 .10 .10 .10 .20 .50 1.20 2.50 3.78

5228 .01 .02 .04 .09 .26 .78 1.59 2.92 3.56 6660 .02 .02 .05 .10 .30 .75 1.51 3.53 3.78

5235 -- -- .02 .05 .21 .71 1.65 -- -- 6663 .01 .01 .03 .10 .20 .57 1.35 2.80 3.09

5247 .02 .03 .08 .10 .20 .50 1.02 2.00 2.60 6734 .01 .01 .04 .07 .20 .55 1.05 2.32 3.15

5258 .02 .02 .05 .10 .30 .78 1.52 3.16 3.77 6736 .02 .03 .09 .10 .20 .53 1.10 2.40 3.20

5303 .01 .02 .05 .08 .22 .62 1.29 2.93 4.28 6740 -- -- .10 .32 .82 1.54 3.31 -- --

5312 .03 .04 .10 .10 .20 .60 1.23 2.60 3.50 6750 .01 .01 .01 .04 .23 .62 1.52 3.36 8.80

5341 -- -- .07 .18 .34 1.21 1.71 -- -- 6757 .01 .01 .04 .10 .28 .80 1.50 3.15 3.89

5342 -- -- -- -- .00 -- -- -- -- 6775 .01 .01 .03 .06 .20 .50 .98 2.10 2.88

5348 .03 .05 .10 .10 .30 .90 1.70 3.30 3.74 6776 .02 .03 .08 .10 .20 .50 1.00 2.13 2.80

5358 .02 .02 .05 .10 .23 .60 1.22 2.44 2.95 6788 .02 .02 .05 .12 .42 .83 1.67 3.59 4.59

5398 .02 .02 .05 .10 .31 .81 1.60 3.20 4.11 6792 .02 .02 .06 .10 .20 .40 .80 1.60 1.99

5410 .02 .02 .06 .10 .20 .50 1.00 2.27 3.09 6794 -- -- .06 .21 .55 1.45 2.84 -- --

5411 .01 .01 .01 .03 .13 .39 .88 2.00 2.78 6834 .10 .10 .10 .10 .40 .90 1.70 3.30 4.20

5424 .01 .01 .01 .03 .17 .70 1.67 2.95 3.67 6893 .02 .03 .08 .10 .15 .40 .70 1.70 2.40

5429 .02 .02 .03 .08 .20 .62 1.39 2.79 4.31 6935 .03 .04 .10 .10 .20 .50 .93 2.04 3.10

5431 -- -- .13 .25 .46 .96 2.69 -- -- 6981 .02 .02 .05 .11 .28 .72 1.46 3.57 4.63

5461 .02 .02 .05 .11 .34 .90 1.70 3.51 4.24 7020 .01 .01 .03 .07 .28 .84 1.68 3.22 5.63

5463 .10 .10 .10 .10 .30 .80 1.70 3.22 4.35 7060 .02 .03 .10 .10 .20 .53 1.22 2.30 2.89

5471 -- -- .01 .02 .05 .10 .43 -- -- 7066 .02 .03 .08 .10 .34 .87 1.70 3.26 4.12

5477 -- -- .08 .15 .26 .54 1.24 -- -- 7074 .02 .02 .05 .10 .20 .49 .90 2.30 2.89

5528 .02 .03 .06 .14 .36 .90 1.61 3.30 4.00 7097 .02 .02 .05 .11 .25 .56 1.62 3.26 3.54

5579 -- -- -- -- .55 -- -- -- -- 7116 .02 .02 .04 .08 .23 .55 1.05 2.42 3.38

5580 -- -- .05 .11 .42 .84 1.39 -- -- 7140 .01 .02 .04 .10 .24 .73 1.65 3.98 5.32

5589 .01 .01 .02 .05 .15 .39 .69 1.21 1.45 7173 .01 .01 .01 .04 .19 .68 1.66 4.64 5.86

5590 .01 .02 .03 .07 .15 .39 .88 1.43 1.89 7174 .01 .01 .01 .05 .21 .70 1.54 3.77 5.14

5591 .02 .02 .05 .09 .20 .47 .80 1.50 1.69 7213 .02 .02 .05 .10 .30 .78 1.55 3.30 4.22

5592 .02 .02 .04 .06 .15 .36 .66 1.60 1.90 7243 .02 .03 .09 .10 .20 .60 1.20 2.57 3.10

5594 .02 .02 .04 .07 .16 .39 .75 1.79 1.92 7262 .01 .01 .02 .04 .10 .25 .52 1.03 1.11

5595 -- -- -- -- .03 -- -- -- -- 7274 .04 .04 .10 .15 .36 .79 1.40 3.38 4.12

5596 .10 .10 .10 .10 .20 .40 .90 1.73 2.10 7300 .02 .02 .05 .10 .28 .73 1.35 2.80 3.34

5600 .01 .02 .04 .08 .17 .41 .77 1.91 2.47 7311 -- -- .10 .14 .28 .71 1.77 -- --

5618 -- -- .05 .11 .29 .84 1.56 -- -- 7363 -- -- .04 .10 .45 .94 1.46 -- --

5650 -- -- .09 .23 .45 .61 1.53 -- -- 7422 .02 .02 .05 .10 .21 .67 1.35 3.04 4.04

5656 .08 .10 .10 .10 .20 .50 1.10 2.39 3.12 7431 .02 .02 .05 .10 .20 .50 1.00 2.19 2.94

5658 .02 .02 .04 .08 .20 .54 1.10 2.33 3.40 7481 .02 .02 .05 .10 .13 .36 .80 1.99 2.60

5661 .10 .10 .10 .10 .20 .60 1.29 4.32 6.01 7497 .10 .10 .10 .10 .28 .70 1.40 2.90 3.54

5666 -- -- .05 .09 .27 .59 1.27 -- -- 7498 .07 .09 .10 .10 .30 .70 1.40 2.66 4.99

5695 .02 .03 .05 .10 .35 .80 1.51 3.11 3.90 7499 .04 .05 .10 .10 .30 .70 1.30 2.57 3.52

5742 -- -- .03 .05 .09 .34 .75 -- -- 7531 .02 .03 .05 .10 .34 .71 1.56 2.32 3.18

5766 -- -- .05 .12 .27 .73 2.42 -- -- 7534 .01 .02 .04 .08 .25 .68 1.29 3.24 3.88

5770 .02 .03 .06 .10 .20 .53 1.10 2.30 3.02 7556 .02 .04 .10 .10 .30 .70 1.40 2.93 3.94

5775 -- -- .05 .06 .18 .70 .92 -- -- 7594 .02 .02 .05 .11 .35 .89 1.72 3.40 4.20

5779 -- -- .04 .13 .35 .72 2.27 -- -- 7596 .01 .02 .04 .09 .34 1.05 1.91 3.28 3.94

5840 .02 .02 .05 .10 .29 .73 1.52 2.80 3.55 7608 .01 .01 .02 .06 .22 .68 1.42 2.86 3.55

5890 .01 .01 .01 .03 .11 .36 .85 2.02 2.49 7622 -- -- .01 .01 .04 .18 .71 -- --

5891 .02 .02 .05 .09 .23 .50 .92 1.81 2.04 7700 .01 .02 .04 .09 .28 .77 1.56 3.45 4.21

5897 .10 .10 .10 .10 .30 .70 1.50 3.20 3.90 7706 .02 .02 .05 .10 .20 .60 1.20 2.56 3.33

Appendix 4–4.2. Empirical distribution of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
250 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 0.01 0.02 0.05 0.10 0.25 0.65 1.62 3.31 4.52 8910 -- -- 0.05 0.12 0.39 1.13 1.89 -- --

7745 .01 .02 .04 .09 .29 .83 1.74 3.91 5.14 8911 0.01 0.01 .03 .06 .21 .62 1.32 2.79 3.50

7922 .01 .01 .02 .05 .12 .29 .65 1.18 1.89 8924 .02 .02 .05 .08 .18 .35 .77 1.43 1.77

7936 .03 .03 .10 .10 .32 .90 1.65 3.43 4.55 8929 -- -- .05 .12 .36 1.60 2.26 -- --

7943 .01 .01 .01 .04 .13 .43 1.01 2.15 2.78 8942 .03 .06 .10 .10 .30 .80 1.70 3.43 4.53

7944 -- .01 .01 .03 .12 .40 1.33 2.48 -- 8944 .01 .02 .03 .09 .27 .75 1.44 2.93 4.03

7945 .01 .01 .01 .03 .12 .48 1.09 2.83 3.83 8996 .01 .02 .04 .08 .25 .71 1.48 3.13 3.89

7947 .03 .04 .10 .10 .23 .72 1.50 4.06 4.94 9014 -- -- .11 .23 .50 .99 1.85 -- --

7948 .01 .02 .03 .07 .20 .60 1.39 3.23 4.10 9037 .02 .02 .04 .07 .15 .35 .76 1.67 2.30

7951 .02 .02 .05 .12 .34 .82 1.57 2.80 3.37 9106 .01 .02 .03 .05 .12 .33 .61 1.95 2.46

7953 .01 .02 .03 .05 .19 .58 1.20 2.98 3.06 9107 -- -- .03 .06 .14 .48 .80 -- --

7981 .02 .02 .03 .06 .23 .60 1.57 2.94 3.54 9129 .01 .01 .02 .05 .10 .34 .83 2.89 3.28

7990 .01 .01 .02 .04 .15 .50 .99 3.50 4.65 9163 .02 .03 .06 .10 .26 .63 1.30 2.70 3.31

7992 -- -- .09 .10 .28 .93 1.79 -- -- 9213 .01 .01 .02 .05 .23 .65 1.27 2.30 4.31

7997 .01 .02 .04 .07 .23 .56 1.38 2.45 2.61 9214 -- -- .11 .23 .35 1.41 1.89 -- --

7999 -- -- .02 .03 .16 .32 .93 -- -- 9222 .01 .01 .02 .06 .22 .66 1.28 2.83 3.94

8022 -- .01 .05 .05 .16 .60 1.12 2.27 -- 9248 .02 .02 .05 .10 .20 .58 1.17 2.10 2.25

8023 .02 .03 .06 .10 .20 .50 1.10 2.38 3.09 9266 -- .02 .04 .11 .25 .77 1.34 2.68 --

8047 .02 .03 .06 .10 .28 .70 1.35 2.71 3.44 9270 .03 .03 .09 .10 .15 .38 .78 1.60 2.10

8060 .01 .01 .03 .05 .15 .43 1.35 2.80 3.19 9295 .01 .01 .02 .03 .10 .24 .50 1.19 1.38

8062 -- -- .02 .04 .24 .86 2.23 -- -- 9304 -- -- -- .10 .17 .26 -- -- --

8068 -- -- .02 .04 .10 .31 .90 -- -- 9307 .03 .03 .08 .12 .30 .70 1.27 2.49 3.33

8081 .02 .02 .05 .10 .20 .60 1.30 2.98 4.34 9328 .02 .02 .04 .08 .21 .60 1.18 1.97 2.89

8089 -- -- .03 .08 .20 .80 1.19 -- -- 9329 -- -- .02 .06 .17 .97 1.23 -- --

8221 -- -- .10 .20 .55 .88 2.06 -- -- 9345 -- -- -- -- .70 -- -- -- --

8252 .02 .02 .06 .10 .20 .50 1.07 2.20 2.87 9363 .01 .01 .01 .04 .13 .46 1.02 2.77 3.52

8265 .02 .02 .05 .09 .26 .75 1.65 3.46 6.06 9364 .01 .01 .01 .04 .15 .53 1.27 3.00 4.09

8289 -- .02 .04 .14 .39 .77 1.00 1.52 -- 9365 -- -- .05 .08 .11 .30 .67 -- --

8305 .02 .02 .05 .10 .12 .30 .69 1.40 1.90 9371 .02 .03 .05 .10 .27 .75 1.45 2.60 2.81

8335 .02 .02 .05 .12 .37 .90 1.73 3.43 4.30 9417 .01 .02 .04 .10 .27 .74 1.48 2.84 3.34

8400 .02 .02 .03 .08 .17 .40 .80 2.11 3.11 9419 .01 .01 .01 .04 .17 .60 1.30 2.70 3.32

8445 .02 .02 .04 .08 .25 .73 1.58 3.41 4.36 9435 -- .03 .06 .10 .25 .60 1.04 2.64 --

8446 .02 .02 .10 .10 .23 .67 1.40 2.73 3.40 9491 .02 .02 .06 .10 .30 .77 1.54 3.00 3.72

8451 .01 .02 .04 .08 .20 .58 1.08 2.34 3.27 9499 .02 .03 .10 .10 .20 .60 1.20 2.40 3.20

8531 .02 .03 .05 .11 .30 .75 1.40 2.79 3.43 9522 -- -- .05 .20 .40 1.68 2.92 -- --

8541 .01 .01 .05 .12 .34 .73 1.34 2.98 3.90 9527 .03 .04 .10 .10 .20 .50 1.00 2.00 2.40

8544 .03 .04 .09 .10 .28 .75 1.51 3.39 4.59 9532 .02 .02 .07 .10 .28 .70 1.31 2.83 3.93

8545 -- -- .02 .07 .23 .42 .61 -- -- 9544 -- -- -- .11 .13 2.95 -- -- --

8563 .10 .10 .10 .10 .30 .80 1.44 3.25 4.20 9565 .02 .03 .08 .10 .25 .60 1.29 2.54 3.61

8566 .01 .02 .04 .09 .23 .61 1.20 2.38 2.68 9570 .10 .10 .10 .10 .20 .50 1.19 2.35 3.20

8583 .10 .10 .10 .10 .20 .60 1.20 2.30 2.80 9574 -- -- .10 .10 .20 .60 1.50 -- --

8584 .02 .03 .09 .10 .27 .74 1.39 2.70 3.20 9588 .01 .02 .05 .10 .20 .50 1.20 2.89 3.70

8623 .04 .05 .10 .10 .30 .70 1.40 2.70 3.30 9665 .02 .03 .07 .10 .30 .80 1.57 3.20 4.40

8625 .02 .02 .05 .10 .26 .72 1.32 2.85 3.69 9715 .02 .02 .06 .10 .30 .79 1.40 2.80 3.65

8630 .02 .03 .06 .10 .21 .57 1.19 2.21 2.52 9729 .01 .01 .02 .05 .19 .60 1.25 2.58 3.20

8631 .02 .02 .05 .10 .25 .57 1.30 2.57 3.53 9772 .01 .02 .04 .07 .22 .65 1.45 3.77 4.90

8646 .02 .02 .05 .10 .29 .73 1.42 2.74 3.35 9814 -- -- .04 .10 .36 .88 1.67 -- --

8647 .02 .03 .09 .10 .20 .50 .95 2.14 2.70 9815 .02 .03 .06 .10 .26 .71 1.50 2.94 4.15

8677 .01 .02 .05 .12 .25 .65 1.29 2.61 3.08 9816 -- .01 .04 .07 .26 .76 1.29 4.27 --

8696 -- -- .06 .10 .42 .96 1.44 -- -- 9817 .03 .05 .10 .10 .29 .70 1.25 2.60 3.33

8743 .02 .02 .07 .10 .31 .85 1.62 3.69 4.46 9829 .02 .02 .05 .10 .14 .40 .84 1.90 2.32

8761 .02 .03 .10 .10 .20 .49 .90 1.99 2.90 9830 .01 .01 .03 .05 .11 .38 .74 1.36 2.21

8778 .03 .04 .10 .10 .30 .80 1.50 3.10 3.75 9858 .02 .02 .05 .10 .24 .55 1.04 2.29 2.71

8845 .02 .03 .07 .10 .20 .68 1.42 3.18 4.15 9893 .02 .02 .05 .10 .25 .67 1.30 2.60 3.51

8859 .02 .02 .05 .13 .35 .93 1.64 3.19 3.88 9916 .02 .04 .10 .10 .39 .90 1.71 3.47 4.10

8898 .02 .03 .05 .12 .34 .78 1.59 3.71 4.25 9976 .02 .02 .05 .10 .20 .56 1.22 2.59 3.32

8908 -- -- .04 .10 .22 .62 1.33 -- --

Appendix 4–4.2. Empirical distribution of storm depth defined by 8-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 251

Appendix 4–4.3. Empirical distribution of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- -- 0.02 0.03 0.13 -- -- -- 1154 0.01 0.01 0.01 0.04 0.16 0.55 1.21 3.16 3.34

0016 0.01 0.01 0.02 .05 .19 .58 1.20 2.45 3.09 1165 .01 .02 .03 .08 .23 .65 1.27 2.34 2.91

0050 .02 .02 .05 .11 .31 .81 1.45 2.51 3.09 1185 .02 .03 .05 .10 .22 .52 1.05 1.89 2.39

0054 -- .02 .03 .05 .17 .48 1.23 1.86 -- 1186 .01 .01 .03 .09 .21 .62 1.58 3.79 5.24

0120 -- -- .04 .21 .71 1.48 2.28 -- -- 1188 -- -- .03 .09 .20 .59 1.47 -- --

0145 .01 .01 .02 .03 .13 .38 1.19 2.22 5.29 1245 -- -- .03 .09 .43 1.12 1.66 -- --

0146 -- -- .02 .08 .25 .61 1.08 -- -- 1246 .10 .10 .10 .10 .30 .80 1.40 3.30 4.52

0174 .03 .04 .10 .10 .20 .44 .82 2.10 2.60 1267 .01 .01 .03 .06 .19 .53 1.00 2.60 3.34

0178 -- -- .04 .05 .14 .30 .99 -- -- 1304 .02 .02 .05 .10 .29 .70 1.45 3.05 4.39

0179 .02 .02 .04 .06 .15 .43 .92 1.58 1.75 1325 .02 .02 .05 .10 .28 .85 1.74 3.75 5.03

0202 .10 .10 .10 .10 .20 .80 1.40 2.76 3.49 1429 .02 .02 .05 .10 .28 .70 1.50 3.30 3.84

0206 .04 .05 .10 .10 .35 .80 1.50 2.99 3.79 1431 .02 .02 .05 .10 .30 .83 1.64 3.55 4.33

0208 -- -- -- -- .19 -- -- -- -- 1432 .02 .02 .04 .10 .31 .84 1.73 3.30 4.33

0211 .01 .01 .01 .04 .14 .44 .95 2.08 2.81 1433 .02 .02 .05 .12 .34 .80 1.62 3.57 4.33

0244 -- .02 .03 .08 .33 .96 1.34 2.53 -- 1434 .02 .03 .06 .11 .30 .82 1.60 3.29 3.96

0248 .02 .03 .06 .10 .20 .50 .99 2.20 2.76 1435 .02 .02 .05 .10 .33 .85 1.75 3.30 4.16

0262 .02 .03 .06 .10 .35 .90 1.70 3.38 4.38 1436 .02 .02 .05 .11 .34 .83 1.69 3.60 4.50

0271 -- -- .06 .25 .60 1.24 2.57 -- -- 1437 -- -- .02 .03 .11 .70 1.94 -- --

0380 .02 .02 .05 .10 .30 .82 1.75 4.58 6.50 1438 .02 .02 .05 .10 .32 .84 1.75 3.21 4.02

0394 -- -- -- .15 .33 .81 -- -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- .04 .22 .86 1.69 2.84 -- -- 1492 .03 .04 .10 .10 .29 .70 1.40 3.02 4.27

0427 -- .10 .10 .10 .20 .70 1.56 3.88 -- 1500 -- -- .05 .10 .26 1.32 1.64 -- --

0428 .01 .01 .01 .04 .17 .60 1.38 3.12 3.97 1528 .03 .03 .09 .10 .20 .70 1.40 3.00 3.75

0429 .01 .01 .01 .05 .24 .70 1.69 3.84 6.05 1541 -- .10 .10 .10 .30 1.10 1.74 4.00 --

0463 .03 .03 .08 .12 .30 .68 1.16 3.60 4.31 1569 .01 .01 .02 .07 .24 .65 1.32 3.08 7.26

0493 -- -- .18 .38 .65 1.11 1.86 -- -- 1632 -- -- -- .05 .50 .90 -- -- --

0495 .01 .02 .03 .08 .20 .47 .82 1.81 2.08 1641 .02 .03 .05 .10 .26 .62 1.14 2.15 2.70

0496 -- -- .02 .05 .15 .32 .67 -- -- 1646 .03 .04 .10 .10 .20 .50 1.10 2.10 2.84

0498 -- -- .03 .06 .20 .26 .30 -- -- 1663 -- -- .10 .10 .35 1.12 2.55 -- --

0509 .02 .03 .07 .10 .30 .77 1.59 3.46 4.30 1671 .03 .03 .08 .10 .30 .77 1.60 3.35 4.44

0518 .02 .03 .10 .10 .30 .80 1.52 3.30 4.28 1680 .02 .02 .05 .11 .30 .78 1.52 3.01 3.73

0521 -- -- .04 .14 .33 .55 1.69 -- -- 1694 .10 .10 .10 .10 .30 .80 1.40 2.50 3.14

0556 .02 .03 .05 .12 .26 .67 1.44 2.69 5.16 1696 .02 .02 .05 .09 .27 .65 1.17 2.61 3.02

0569 .02 .03 .09 .10 .30 .85 1.80 4.03 5.66 1697 -- .03 .05 .10 .22 .58 1.35 2.71 --

0572 .02 .02 .05 .10 .28 .78 1.58 3.35 4.32 1698 .01 .02 .10 .10 .20 .60 1.10 2.71 3.40

0576 .01 .01 .03 .05 .18 .60 1.15 4.38 6.46 1720 .10 .10 .10 .10 .20 .60 1.60 3.07 3.45

0580 .01 .02 .05 .10 .25 .70 1.60 4.02 5.45 1761 .01 .01 .01 .05 .18 .49 .97 1.61 2.31

0587 .01 .02 .04 .09 .28 .89 1.66 3.73 5.48 1773 .03 .05 .10 .10 .40 .98 1.80 3.62 4.50

0605 .02 .04 .10 .20 .52 .89 1.54 3.08 3.36 1810 -- -- .03 .10 .23 .51 1.34 -- --

0639 .03 .04 .10 .10 .25 .67 1.50 3.08 4.04 1823 -- -- .05 .08 .33 1.47 2.08 -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 .02 .02 .05 .10 .32 .85 1.77 2.71 3.27

0665 .01 .02 .04 .10 .30 .80 1.58 3.34 4.16 1875 -- -- .18 .27 .75 1.40 2.53 -- --

0689 .02 .02 .05 .10 .26 .70 1.50 3.43 4.35 1876 -- -- .05 .10 .38 .82 1.90 -- --

0690 .10 .10 .10 .10 .20 .60 1.30 2.60 3.66 1889 .01 .01 .01 .04 .19 .69 1.36 3.33 3.99

0691 .02 .02 .04 .10 .29 .77 1.54 2.87 3.80 1903 .10 .10 .10 .10 .20 .60 1.10 2.10 3.50

0708 .10 .10 .10 .10 .30 .60 1.30 3.98 4.52 1914 -- -- .10 .18 .39 1.03 1.37 -- --

0738 .02 .02 .05 .12 .35 .82 1.60 3.20 4.19 1920 .02 .03 .07 .13 .36 .88 1.50 3.14 4.53

0776 .02 .02 .05 .10 .20 .57 1.18 2.51 3.30 1921 .03 .04 .10 .10 .39 .91 1.70 3.69 4.71

0779 .10 .10 .10 .10 .20 .50 1.08 2.53 3.00 1937 .02 .03 .06 .14 .40 .94 1.65 3.80 4.56

0784 .02 .02 .07 .10 .20 .50 1.10 2.55 3.20 1956 .02 .02 .06 .10 .32 .86 1.64 3.41 4.63

0786 .01 .01 .02 .04 .15 .44 1.04 2.31 2.99 1970 -- -- .04 .09 .47 1.26 2.65 -- --

0917 .02 .03 .05 .12 .36 .95 1.86 3.89 5.21 2014 .01 .01 .01 .03 .11 .50 1.34 3.12 4.06

0923 -- -- .14 .38 .61 1.47 2.96 -- -- 2015 .01 .01 .01 .03 .14 .52 1.32 3.44 4.70

0926 .02 .03 .06 .10 .30 .77 1.55 3.01 3.70 2019 -- -- .06 .12 .67 1.43 2.03 -- --

0950 -- -- .04 .06 .16 .30 .67 -- -- 2024 .02 .03 .07 .12 .35 .85 1.53 3.26 4.17

0996 -- -- .06 .14 .49 1.09 3.19 -- -- 2042 -- -- .02 .07 .17 .25 .28 -- --

1013 .10 .10 .10 .10 .20 .50 1.40 3.62 6.51 2043 -- .01 .02 .05 .12 .32 .77 1.23 --

1017 .01 .02 .06 .10 .23 .66 1.26 2.64 3.49 2048 .03 .03 .09 .10 .20 .60 1.39 2.91 4.41

1042 -- -- .30 .40 .84 1.44 3.19 -- -- 2050 -- .01 .01 .02 .09 .32 1.20 4.41 --

1048 -- -- .04 .17 .35 .86 1.47 -- -- 2051 -- .02 .05 .09 .26 .69 1.15 3.04 --

1053 .02 .02 .05 .09 .25 .65 1.39 3.12 3.68 2053 -- -- .02 .04 .11 .27 .99 -- --

1057 .02 .02 .05 .10 .26 .61 1.16 2.21 2.98 2073 .02 .02 .05 .09 .29 .75 1.47 3.45 4.94

1063 -- -- .07 .20 .69 1.10 2.85 -- -- 2082 .02 .02 .05 .10 .20 .50 1.00 2.15 2.81

1068 .03 .03 .08 .10 .35 .81 1.60 3.05 3.96 2086 .02 .03 .08 .10 .31 .81 1.60 3.11 4.07

1080 .02 .03 .05 .10 .20 .41 .82 1.79 2.49 2088 -- -- .10 .10 .40 1.25 1.70 -- --

1081 .02 .02 .05 .12 .35 .85 1.67 3.07 4.00 2090 .10 .10 .10 .10 .30 .80 1.40 3.00 4.50

1133 -- -- .01 .01 .08 .40 .79 -- -- 2096 .03 .03 .09 .10 .31 .80 1.50 3.15 4.00

1136 .01 .01 .01 .03 .11 .42 1.16 3.00 4.02 2128 .02 .02 .05 .11 .36 .90 1.57 3.60 4.49

1138 -- -- .09 .15 .67 1.26 1.61 -- -- 2131 .03 .04 .10 .10 .30 .70 1.40 3.00 3.67

1139 -- .02 .04 .10 .32 .80 1.73 3.06 -- 2142 -- -- .14 .23 .81 1.47 2.43 -- --

Appendix 4–4.3. Empirical distribution of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
252 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 0.01 0.03 0.13 0.33 0.91 -- -- 3463 -- -- 0.03 0.07 0.28 0.89 1.85 -- --

2206 0.02 0.03 .05 .11 .35 .88 1.88 3.39 5.87 3476 0.02 0.02 .04 .10 .27 .76 1.46 2.96 3.92

2238 .01 .01 .02 .03 .14 .44 1.02 2.05 2.32 3485 -- -- .10 .10 .42 1.67 2.51 -- --

2240 -- .01 .02 .04 .17 .41 .98 1.95 -- 3507 .06 .08 .10 .10 .30 .80 1.70 3.34 3.92

2242 .01 .01 .02 .06 .26 .78 1.48 3.05 3.66 3546 .02 .03 .07 .11 .38 .95 1.80 3.65 4.60

2244 .01 .01 .03 .10 .30 .77 1.60 3.20 4.34 3547 .02 .02 .05 .12 .35 .89 1.72 3.05 3.21

2247 -- .01 .02 .05 .23 .65 1.35 3.67 -- 3579 -- .03 .06 .12 .25 .97 1.67 3.35 --

2309 .03 .04 .10 .20 .47 1.00 1.71 3.57 4.71 3642 .02 .03 .09 .10 .31 .81 1.65 3.49 4.49

2312 .05 .10 .10 .10 .40 .90 1.60 3.00 3.92 3646 .02 .03 .06 .12 .33 .78 1.48 3.18 4.18

2334 -- .03 .08 .21 .60 1.28 2.59 4.50 -- 3668 -- -- .34 .50 .89 1.81 3.26 -- --

2336 .02 .03 .05 .15 .37 .91 1.49 2.60 3.65 3673 -- -- .04 .08 .40 1.58 2.27 -- --

2354 -- -- .05 .08 .14 .54 1.01 -- -- 3686 .04 .07 .10 .10 .30 .80 1.61 2.75 3.50

2355 -- .01 .03 .07 .25 .59 2.08 4.85 -- 3691 .02 .03 .10 .10 .30 .80 1.50 3.09 3.90

2357 .01 .01 .01 .02 .09 .43 1.09 3.05 4.36 3734 -- -- .03 .16 .55 1.75 3.54 -- --

2360 .01 .01 .01 .03 .11 .44 1.10 2.67 3.33 3771 .10 .10 .10 .10 .30 .80 1.60 3.50 4.18

2361 .02 .02 .04 .10 .20 .60 .95 2.31 6.25 3789 .01 .01 .03 .07 .11 .27 .48 1.17 2.10

2394 .02 .02 .05 .10 .32 .83 1.60 3.40 4.70 3826 .01 .03 .06 .15 .33 .85 1.41 2.63 3.29

2404 .02 .02 .05 .10 .30 .80 1.55 3.15 3.80 3831 .03 .03 .05 .14 .36 .95 1.64 3.02 5.11

2415 .02 .03 .07 .15 .41 1.00 1.89 3.74 4.90 3841 .02 .02 .05 .15 .30 .91 1.69 3.85 5.03

2462 .03 .03 .07 .13 .38 .94 1.80 3.28 4.14 3871 .02 .03 .05 .10 .30 .70 1.35 2.86 3.61

2528 .03 .03 .05 .10 .27 .74 1.64 2.68 2.78 3884 -- -- .06 .10 .30 1.28 3.19 -- --

2617 .01 .02 .04 .08 .25 .56 1.14 3.07 3.99 3941 -- .01 .04 .08 .44 1.23 2.09 4.64 --

2619 .02 .03 .05 .13 .27 .65 1.13 2.29 3.82 3963 -- -- -- .03 .05 .10 -- -- --

2621 .02 .03 .06 .10 .27 .63 1.30 2.46 3.08 4040 .02 .03 .05 .11 .30 .67 1.33 2.66 3.55

2675 .03 .04 .10 .10 .30 .80 1.50 3.40 4.29 4058 -- -- .06 .09 .47 .88 1.76 -- --

2676 .10 .10 .10 .10 .30 .80 1.70 3.00 4.04 4098 .03 .04 .10 .10 .20 .50 .94 1.93 2.31

2679 .02 .02 .05 .10 .20 .60 1.40 3.09 4.30 4100 .02 .02 .05 .10 .25 .65 1.34 3.24 4.86

2715 .02 .03 .06 .10 .33 .79 1.47 2.95 3.60 4137 .10 .10 .10 .10 .30 .80 1.50 2.90 3.75

2744 .02 .03 .06 .10 .29 .70 1.30 2.73 3.37 4191 .02 .03 .06 .10 .24 .70 1.50 3.22 4.31

2758 .01 .02 .02 .05 .14 .40 1.25 4.04 4.44 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- .01 .04 .16 .66 1.61 -- -- 4257 .04 .05 .10 .10 .40 .97 1.84 3.79 4.50

2797 .01 .01 .01 .03 .08 .25 .54 1.29 1.70 4258 .10 .10 .10 .10 .30 .82 1.40 3.27 5.01

2811 .02 .02 .06 .10 .20 .60 1.30 2.70 3.30 4278 .02 .02 .05 .11 .31 .84 1.63 3.19 3.82

2813 -- -- .05 .15 .35 .60 1.58 -- -- 4299 .02 .03 .06 .10 .25 .46 .81 1.24 1.46

2814 -- -- .01 .03 .05 .15 .96 -- -- 4300 .01 .01 .01 .05 .21 .68 1.50 3.45 4.88

2815 .10 .10 .10 .10 .30 .60 1.30 2.72 3.82 4305 .01 .01 .01 .04 .18 .65 1.45 3.34 4.55

2818 .02 .02 .04 .10 .35 .78 1.49 3.29 3.78 4307 .01 .01 .01 .04 .23 .74 1.61 3.53 5.88

2986 .02 .02 .07 .16 .46 1.20 2.03 3.55 4.08 4309 .02 .02 .05 .10 .32 .87 1.75 3.62 4.87

3005 .02 .03 .08 .10 .30 .80 1.41 2.88 3.68 4311 .02 .02 .05 .11 .35 .95 1.90 3.75 4.78

3033 .02 .02 .04 .08 .14 .31 .62 1.30 1.88 4313 .02 .02 .05 .11 .30 .81 1.92 4.17 6.48

3034 -- -- -- -- .43 -- -- -- -- 4319 -- .03 .05 .12 .30 .81 1.32 3.10 --

3047 -- -- .03 .06 .34 .74 1.42 -- -- 4329 .02 .02 .05 .12 .35 .85 1.80 3.90 4.88

3103 -- -- .09 .14 .26 .98 2.04 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 .02 .03 .07 .12 .40 .87 1.63 3.40 4.40 4375 .10 .10 .10 .10 .30 .70 1.40 3.30 4.80

3156 .04 .05 .10 .10 .37 .88 1.84 5.47 5.93 4392 .02 .02 .05 .13 .40 1.05 2.07 3.92 6.30

3171 .02 .03 .06 .11 .33 .82 1.61 3.27 4.24 4425 .03 .03 .09 .10 .20 .50 1.00 2.10 2.76

3189 .01 .02 .04 .09 .16 .40 .84 1.65 2.46 4440 .02 .02 .04 .09 .26 .70 1.34 2.91 3.89

3260 .01 .01 .03 .09 .30 .79 1.35 2.55 3.65 4476 .03 .05 .10 .10 .30 .77 1.45 2.98 3.70

3267 .01 .01 .03 .05 .17 .58 1.09 3.70 4.13 4498 -- -- .02 .06 .17 .38 .60 -- --

3270 .05 .10 .10 .10 .20 .60 1.20 2.43 3.40 4517 .02 .02 .05 .10 .31 .79 1.53 3.01 3.67

3272 -- -- .02 .04 .07 .13 .33 -- -- 4520 .10 .10 .10 .10 .30 .70 1.50 3.11 3.65

3277 -- -- .02 .02 .06 .22 .58 -- -- 4525 -- -- .04 .07 .26 .78 2.63 -- --

3278 .02 .03 .05 .10 .20 .56 1.10 2.20 2.68 4563 -- -- .04 .07 .34 .65 1.81 -- --

3280 .01 .01 .03 .05 .14 .39 .85 1.91 2.48 4570 .02 .03 .07 .10 .25 .60 1.30 2.58 3.26

3281 -- -- .04 .12 .25 .51 .93 -- -- 4577 .03 .03 .10 .13 .40 .90 1.70 3.50 4.26

3283 .01 .01 .02 .05 .25 .67 1.42 3.11 4.06 4591 .02 .03 .05 .10 .33 .81 1.60 3.36 4.20

3284 .01 .02 .08 .10 .30 .79 1.54 2.98 3.60 4670 .02 .02 .06 .10 .21 .60 1.30 2.72 3.36

3285 .03 .07 .10 .10 .30 .80 1.60 3.00 3.96 4671 .01 .01 .02 .06 .20 .59 1.03 2.23 2.91

3329 .01 .02 .04 .10 .24 .66 1.40 3.21 4.17 4679 .03 .04 .10 .10 .30 .80 1.50 3.49 4.43

3335 .02 .02 .05 .16 .40 1.00 1.85 4.59 8.26 4696 -- -- .04 .09 .26 .58 .91 -- --

3370 .02 .03 .05 .14 .39 .94 1.75 3.49 4.37 4703 .02 .02 .05 .10 .20 .55 1.19 2.39 3.00

3410 .04 .05 .10 .10 .29 .60 1.13 2.50 3.04 4704 .02 .03 .05 .12 .38 1.00 2.07 4.52 5.45

3415 .02 .03 .10 .10 .30 .78 1.59 3.01 4.10 4731 .01 .01 .01 .03 .17 .47 1.09 3.08 6.83

3430 .01 .01 .01 .05 .21 .69 1.50 3.70 4.69 4792 .10 .10 .10 .10 .30 .80 1.44 2.80 3.30

3431 .01 .01 .01 .04 .15 .68 1.37 4.43 5.84 4819 .10 .10 .10 .12 .40 1.00 1.61 3.70 3.84

3441 -- -- .03 .10 .30 .74 1.77 -- -- 4852 -- -- .15 .35 .69 1.10 2.55 -- --

3442 .02 .03 .05 .09 .20 .46 1.00 2.21 2.60 4866 .02 .04 .08 .10 .36 .88 1.62 3.16 3.90

3446 .03 .03 .06 .10 .28 .60 1.15 2.25 2.89 4876 .10 .10 .10 .10 .40 1.00 2.30 4.55 4.95

3460 -- -- .05 .10 .49 .99 1.50 -- -- 4878 .02 .02 .05 .12 .38 .97 1.96 4.29 5.20

3462 .02 .03 .06 .11 .30 .70 1.19 2.15 3.04 4880 .02 .03 .06 .10 .22 .57 1.08 2.25 2.80

Appendix 4–4.3. Empirical distribution of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 253

4920 0.02 0.03 0.07 0.10 0.22 0.70 1.42 3.18 4.08 5957 0.03 0.04 0.10 0.10 0.30 0.80 1.50 3.00 3.66

4934 -- -- -- .08 .15 .36 -- -- -- 5958 .01 .01 .04 .10 .31 .78 1.40 2.45 3.25

4972 .02 .03 .08 .10 .30 .71 1.40 3.00 3.90 5973 .01 .01 .02 .05 .12 .62 1.30 3.09 4.14

4973 .02 .04 .09 .20 .50 1.05 1.84 3.51 3.91 5996 .02 .03 .07 .10 .30 .77 1.41 2.91 3.98

4974 .02 .02 .05 .10 .22 .60 1.10 2.37 3.19 6017 .01 .01 .02 .05 .17 .55 1.24 2.57 2.86

4975 .10 .10 .10 .10 .40 .90 1.80 3.40 4.42 6024 .02 .02 .05 .10 .45 1.16 2.20 4.86 6.27

4978 .01 .02 .04 .09 .24 .68 1.70 3.26 5.13 6050 -- -- .10 .23 .38 1.01 1.72 -- --

4979 -- -- .07 .24 .50 1.12 2.78 -- -- 6104 .02 .02 .05 .10 .20 .41 .82 1.79 2.51

4982 .02 .02 .05 .10 .28 .71 1.31 2.73 3.42 6108 .02 .03 .10 .12 .40 1.00 1.89 3.70 4.80

5018 .02 .03 .06 .12 .34 .84 1.50 2.54 3.41 6136 .02 .03 .10 .10 .20 .50 .94 1.98 2.55

5048 .02 .03 .08 .10 .20 .55 1.10 2.66 3.38 6166 -- .02 .04 .05 .18 .46 1.16 2.05 --

5049 -- .10 .10 .10 .20 .50 .90 4.30 -- 6176 .02 .02 .05 .12 .39 .82 2.00 4.14 6.00

5056 -- -- -- .20 .37 .69 -- -- -- 6177 .03 .04 .10 .10 .40 .90 1.80 3.74 4.90

5057 .01 .01 .01 .03 .10 .34 .98 2.38 3.16 6210 .02 .03 .10 .10 .30 .90 1.64 3.62 4.36

5060 .01 .01 .02 .05 .15 .57 1.44 4.37 6.18 6211 .01 .01 .04 .10 .28 .87 1.58 3.36 4.25

5081 .02 .02 .05 .12 .39 .94 1.66 3.20 3.98 6270 .10 .10 .10 .10 .40 .90 1.90 3.90 4.79

5094 .02 .03 .10 .10 .30 .80 1.65 3.31 4.00 6275 -- -- -- -- .00 -- -- -- --

5113 .02 .03 .07 .10 .21 .66 1.45 3.48 4.40 6276 -- -- .09 .18 .81 1.59 2.58 -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 .02 .03 .06 .12 .36 .90 1.61 3.03 3.70

5123 -- -- .07 .18 .29 .55 2.45 -- -- 6434 -- -- .05 .13 .37 .88 1.57 -- --

5192 .02 .02 .07 .10 .35 .86 1.70 3.35 4.40 6504 .02 .03 .07 .10 .20 .51 1.10 2.34 3.20

5193 .02 .02 .06 .10 .30 .80 1.56 3.25 4.16 6558 -- -- .05 .06 .41 .97 1.80 -- --

5224 .01 .02 .05 .11 .38 1.05 1.85 4.25 4.95 6615 .08 .10 .10 .10 .20 .60 1.30 2.80 4.30

5228 .01 .02 .04 .09 .27 .81 1.60 3.33 3.62 6660 .02 .02 .05 .10 .33 .85 1.71 3.59 3.80

5235 -- -- .03 .05 .32 .79 1.84 -- -- 6663 .01 .01 .03 .10 .25 .65 1.41 3.05 3.54

5247 .02 .03 .09 .10 .21 .57 1.10 2.20 2.80 6734 .01 .01 .04 .09 .23 .57 1.11 2.52 3.20

5258 .02 .03 .05 .11 .33 .84 1.70 3.46 3.87 6736 .02 .03 .09 .10 .20 .60 1.20 2.50 3.43

5303 .02 .03 .05 .09 .25 .70 1.35 3.32 4.45 6740 -- -- .09 .20 .82 2.15 3.49 -- --

5312 .04 .05 .10 .10 .25 .70 1.31 2.80 3.87 6750 .01 .01 .02 .05 .27 .74 1.79 4.72 9.18

5341 -- -- .08 .22 .41 1.24 2.24 -- -- 6757 .01 .01 .04 .10 .30 .88 1.61 3.31 4.20

5342 -- -- -- -- .00 -- -- -- -- 6775 .01 .01 .03 .07 .22 .55 1.08 2.50 2.98

5348 .03 .05 .10 .10 .40 1.00 1.80 3.40 4.30 6776 .02 .03 .09 .10 .20 .56 1.10 2.20 2.90

5358 .02 .02 .05 .10 .25 .65 1.30 2.60 3.18 6788 .02 .02 .05 .15 .46 .89 1.75 3.86 4.61

5398 .02 .03 .06 .10 .35 .87 1.74 3.45 4.43 6792 .02 .02 .06 .10 .20 .40 .90 1.70 2.10

5410 .02 .02 .07 .10 .20 .56 1.06 2.48 3.30 6794 -- -- .15 .33 .80 1.88 3.05 -- --

5411 .01 .01 .01 .04 .14 .45 .96 2.15 2.88 6834 .10 .10 .10 .10 .40 1.00 1.80 3.55 4.40

5424 .01 .01 .01 .04 .25 .80 1.84 3.32 5.97 6893 .02 .03 .08 .10 .17 .40 .79 1.78 2.53

5429 .02 .02 .04 .08 .23 .71 1.55 3.14 4.38 6935 .03 .04 .10 .10 .20 .50 1.00 2.30 3.20

5431 -- -- .13 .30 .55 1.13 2.86 -- -- 6981 .02 .03 .05 .14 .37 .76 1.52 3.75 4.75

5461 .02 .02 .05 .13 .37 .97 1.87 3.77 5.07 7020 .01 .02 .04 .11 .34 .86 1.81 3.52 7.44

5463 .10 .10 .10 .10 .40 .90 1.80 3.50 4.91 7060 .03 .04 .10 .10 .27 .60 1.30 2.48 3.12

5471 -- -- .02 .02 .07 .10 .44 -- -- 7066 .02 .03 .10 .11 .40 .96 1.85 3.49 4.50

5477 -- -- .07 .15 .26 .57 1.48 -- -- 7074 .02 .02 .05 .10 .20 .50 1.00 2.37 3.41

5528 .02 .03 .07 .15 .40 .97 1.74 3.47 4.44 7097 .02 .02 .06 .13 .30 .75 1.71 3.54 4.43

5579 -- -- -- -- .55 -- -- -- -- 7116 .02 .02 .04 .09 .24 .59 1.10 2.57 3.48

5580 -- -- .05 .10 .44 .86 1.48 -- -- 7140 .01 .02 .05 .10 .28 .80 1.78 4.30 5.51

5589 .01 .01 .02 .05 .16 .41 .71 1.38 1.47 7173 .01 .01 .02 .05 .21 .78 1.87 4.91 6.55

5590 .02 .02 .04 .07 .17 .38 .90 1.87 2.99 7174 .01 .01 .02 .05 .25 .79 1.72 4.16 5.61

5591 .02 .02 .05 .10 .20 .49 .85 1.49 1.76 7213 .02 .02 .05 .11 .34 .82 1.62 3.50 4.30

5592 .02 .02 .04 .07 .17 .40 .70 1.71 2.02 7243 .02 .03 .10 .10 .27 .70 1.30 2.70 3.70

5594 .02 .02 .04 .07 .16 .40 .78 1.82 2.22 7262 .01 .01 .02 .04 .10 .26 .53 1.03 1.11

5595 -- -- -- -- .03 -- -- -- -- 7274 .03 .04 .10 .16 .39 .86 1.49 3.59 4.30

5596 .10 .10 .10 .10 .20 .40 .90 1.90 2.25 7300 .02 .03 .05 .10 .30 .78 1.42 2.98 3.51

5600 .01 .02 .04 .09 .20 .43 .85 2.06 2.66 7311 -- -- .10 .19 .29 .77 1.77 -- --

5618 -- -- .07 .11 .33 .88 1.77 -- -- 7363 -- -- .04 .09 .45 .94 1.48 -- --

5650 -- -- .08 .20 .45 .64 1.59 -- -- 7422 .02 .02 .06 .10 .28 .71 1.50 3.28 4.20

5656 .06 .10 .10 .10 .20 .60 1.10 2.62 3.21 7431 .02 .03 .05 .10 .20 .54 1.05 2.33 3.01

5658 .02 .02 .05 .09 .23 .60 1.15 2.45 3.51 7481 .02 .02 .05 .10 .15 .40 .86 2.20 3.00

5661 .10 .10 .10 .10 .20 .60 1.30 5.62 6.99 7497 .10 .10 .10 .10 .30 .80 1.50 3.24 4.09

5666 -- -- .05 .09 .29 .60 1.34 -- -- 7498 .07 .10 .10 .10 .30 .80 1.50 2.72 5.31

5695 .02 .03 .06 .12 .40 .90 1.60 3.40 4.15 7499 .04 .06 .10 .10 .30 .73 1.40 2.70 3.70

5742 -- -- .04 .05 .18 .38 .75 -- -- 7531 .03 .03 .05 .11 .35 .80 1.60 2.99 3.53

5766 -- -- .06 .14 .31 1.11 2.69 -- -- 7534 .02 .03 .05 .10 .27 .75 1.43 3.29 3.98

5770 .02 .03 .07 .10 .21 .60 1.20 2.50 3.50 7556 .03 .04 .10 .10 .30 .80 1.50 3.14 4.17

5775 -- -- .05 .06 .20 .71 .94 -- -- 7594 .02 .03 .06 .13 .38 .93 1.83 3.57 4.67

5779 -- -- .13 .19 .48 .93 2.50 -- -- 7596 .01 .02 .04 .09 .35 1.09 1.93 3.40 4.04

5840 .02 .03 .05 .10 .34 .80 1.75 3.07 4.43 7608 .01 .01 .03 .07 .25 .75 1.51 3.00 3.76

5890 .01 .01 .01 .04 .13 .39 .93 2.14 2.63 7622 -- -- .01 .01 .04 .18 .71 -- --

5891 .02 .02 .05 .10 .23 .55 .95 1.85 2.27 7700 .02 .02 .04 .10 .32 .85 1.76 3.52 4.30

5897 .10 .10 .10 .10 .30 .80 1.60 3.49 4.10 7706 .02 .02 .06 .10 .21 .60 1.26 2.70 3.60

Appendix 4–4.3. Empirical distribution of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
254 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 0.02 0.03 0.06 0.11 0.29 0.69 1.75 3.40 4.66 8910 -- -- 0.04 0.12 0.42 1.19 1.93 -- --

7745 .01 .02 .05 .10 .38 .94 1.81 3.95 5.77 8911 0.01 0.01 .03 .07 .22 .67 1.38 3.04 3.57

7922 .01 .01 .02 .05 .14 .30 .65 1.19 1.93 8924 .02 .02 .05 .09 .19 .39 .80 1.45 1.79

7936 .03 .04 .10 .10 .40 .97 1.80 3.70 5.24 8929 -- -- .06 .14 .58 1.74 2.67 -- --

7943 .01 .01 .02 .04 .15 .47 1.10 2.31 3.00 8942 .03 .06 .10 .10 .40 .90 1.80 4.00 4.90

7944 -- .01 .01 .03 .14 .43 1.40 2.66 -- 8944 .01 .02 .03 .09 .28 .80 1.59 3.26 4.22

7945 .01 .01 .01 .03 .14 .54 1.20 3.14 4.29 8996 .01 .02 .04 .09 .28 .76 1.57 3.23 4.08

7947 .04 .05 .10 .10 .30 .80 1.59 4.10 5.22 9014 -- -- .11 .23 .50 .99 1.85 -- --

7948 .01 .02 .04 .08 .23 .70 1.51 3.29 4.18 9037 .02 .02 .04 .07 .16 .38 .81 1.68 2.34

7951 .02 .03 .06 .15 .38 .91 1.65 3.04 3.51 9106 .02 .02 .03 .05 .13 .37 .72 2.23 2.49

7953 .02 .02 .03 .07 .20 .61 1.31 3.01 3.39 9107 -- -- .03 .05 .18 .70 .88 -- --

7981 .02 .02 .04 .07 .25 .67 1.66 3.00 3.56 9129 .01 .02 .03 .05 .12 .42 1.14 3.06 3.36

7990 .01 .01 .02 .05 .17 .53 1.37 3.77 4.70 9163 .02 .03 .07 .10 .30 .70 1.39 2.90 3.60

7992 -- -- .10 .11 .40 1.39 2.03 -- -- 9213 .01 .01 .02 .07 .27 .71 1.52 3.00 4.75

7997 .01 .02 .04 .08 .23 .57 1.51 2.68 3.10 9214 -- -- .13 .25 .38 1.34 1.89 -- --

7999 -- -- .02 .03 .16 .32 .93 -- -- 9222 .01 .01 .03 .07 .23 .76 1.51 3.09 4.44

8022 -- .01 .05 .05 .19 .67 1.35 2.48 -- 9248 .02 .03 .05 .10 .23 .61 1.20 2.11 2.94

8023 .02 .03 .07 .10 .20 .58 1.15 2.51 3.65 9266 -- .03 .05 .12 .26 .81 1.44 2.71 --

8047 .02 .03 .07 .10 .30 .80 1.50 2.83 3.54 9270 .03 .03 .10 .10 .19 .40 .81 1.70 2.20

8060 .01 .02 .03 .05 .15 .49 1.41 3.11 3.24 9295 .01 .01 .02 .04 .10 .27 .50 1.40 2.17

8062 -- -- .02 .04 .16 .72 2.60 -- -- 9304 -- -- -- .10 .17 .26 -- -- --

8068 -- -- .02 .03 .11 .33 1.00 -- -- 9307 .03 .04 .10 .14 .34 .72 1.43 3.19 3.41

8081 .02 .03 .05 .10 .22 .70 1.44 3.26 4.74 9328 .02 .02 .05 .08 .23 .61 1.19 2.12 2.91

8089 -- -- .03 .09 .23 .78 1.56 -- -- 9329 -- -- .04 .07 .21 1.02 1.24 -- --

8221 -- -- .11 .33 .60 .99 2.30 -- -- 9345 -- -- -- -- .75 -- -- -- --

8252 .02 .03 .06 .10 .20 .59 1.10 2.37 2.95 9363 .01 .01 .01 .05 .14 .53 1.14 2.98 3.73

8265 .02 .02 .05 .10 .30 .81 1.74 3.92 6.41 9364 .01 .01 .01 .04 .16 .58 1.38 3.42 4.70

8289 -- .02 .04 .15 .43 .78 1.07 1.53 -- 9365 -- -- .04 .08 .11 .30 .75 -- --

8305 .02 .03 .05 .10 .15 .33 .70 1.50 2.00 9371 .03 .04 .05 .10 .28 .80 1.76 2.67 3.39

8335 .02 .03 .06 .14 .42 .99 1.87 3.66 4.44 9417 .01 .02 .05 .10 .30 .80 1.57 3.07 3.61

8400 .02 .02 .04 .08 .20 .41 .84 2.42 3.37 9419 .01 .01 .02 .05 .21 .66 1.42 2.78 3.44

8445 .02 .02 .04 .09 .27 .78 1.70 3.48 4.43 9435 -- .03 .06 .10 .25 .63 .99 3.68 --

8446 .02 .03 .10 .10 .30 .70 1.60 2.99 3.77 9491 .02 .03 .06 .10 .30 .82 1.65 3.20 4.28

8451 .01 .02 .05 .09 .23 .63 1.14 3.03 3.30 9499 .02 .04 .10 .10 .20 .61 1.30 2.60 3.30

8531 .02 .03 .06 .12 .33 .83 1.48 3.00 3.76 9522 -- -- .05 .20 .42 2.33 3.07 -- --

8541 .01 .01 .05 .11 .34 .79 1.66 3.86 4.02 9527 .03 .04 .10 .10 .20 .50 1.10 2.30 2.64

8544 .03 .05 .10 .10 .29 .84 1.70 3.89 5.12 9532 .02 .02 .08 .10 .30 .78 1.47 3.00 4.10

8545 -- -- .02 .06 .26 .49 .62 -- -- 9544 -- -- -- .11 .13 2.95 -- -- --

8563 .10 .10 .10 .10 .30 .90 1.60 3.60 4.35 9565 .02 .03 .08 .10 .29 .60 1.36 2.74 3.70

8566 .01 .02 .04 .08 .23 .64 1.24 2.39 2.71 9570 .10 .10 .10 .10 .20 .60 1.30 2.65 3.27

8583 .10 .10 .10 .10 .20 .70 1.33 2.59 3.04 9574 -- -- .10 .10 .35 .72 1.65 -- --

8584 .02 .03 .09 .10 .30 .80 1.45 2.99 3.41 9588 .01 .02 .05 .10 .20 .56 1.32 3.12 3.88

8623 .04 .05 .10 .10 .30 .80 1.50 2.81 3.61 9665 .02 .03 .08 .10 .34 .90 1.66 3.53 4.60

8625 .02 .02 .05 .10 .29 .76 1.39 2.94 4.05 9715 .02 .02 .07 .10 .30 .80 1.53 3.00 3.80

8630 .02 .03 .07 .10 .23 .60 1.25 2.30 2.58 9729 .01 .01 .02 .05 .22 .66 1.32 2.77 3.46

8631 .02 .03 .05 .10 .26 .62 1.36 2.94 3.80 9772 .01 .02 .04 .08 .25 .75 1.54 3.94 5.01

8646 .02 .02 .05 .10 .30 .78 1.53 2.96 3.53 9814 -- -- .04 .12 .40 .94 1.69 -- --

8647 .03 .03 .09 .10 .20 .50 1.00 2.35 2.93 9815 .03 .03 .06 .11 .30 .79 1.60 3.14 4.26

8677 .02 .02 .07 .14 .30 .74 1.39 2.83 3.79 9816 -- .01 .04 .07 .26 .77 1.79 4.37 --

8696 -- -- .06 .16 .43 1.20 1.72 -- -- 9817 .04 .05 .10 .10 .30 .76 1.30 2.90 3.48

8743 .02 .03 .07 .10 .38 .93 1.80 3.90 4.71 9829 .02 .02 .05 .10 .15 .40 .90 2.00 2.52

8761 .02 .03 .10 .10 .20 .50 1.00 2.27 3.00 9830 .01 .01 .03 .05 .11 .39 .77 1.66 2.24

8778 .03 .04 .10 .10 .31 .90 1.68 3.43 3.98 9858 .02 .02 .05 .10 .25 .59 1.17 2.34 2.91

8845 .02 .03 .08 .10 .26 .74 1.60 3.43 4.49 9893 .02 .03 .06 .10 .30 .70 1.40 2.84 3.93

8859 .02 .03 .06 .15 .40 .99 1.72 3.33 4.10 9916 .03 .05 .10 .13 .40 1.00 1.90 3.65 4.24

8898 .02 .03 .06 .13 .38 .85 1.75 3.83 4.53 9976 .02 .02 .05 .10 .20 .60 1.30 2.86 3.61

8908 -- -- .04 .10 .34 .85 1.64 -- --

Appendix 4–4.3. Empirical distribution of storm depth defined by 12-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 255

Appendix 4–4.4. Empirical distribution of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- -- 0.02 0.03 0.13 -- -- -- 1154 0.01 0.01 0.02 0.04 0.18 0.64 1.45 3.32 3.61

0016 0.01 0.01 0.02 .05 .22 .66 1.36 2.65 3.61 1165 .01 .02 .04 .09 .26 .71 1.40 2.46 3.11

0050 .02 .02 .05 .12 .36 .86 1.55 2.68 3.37 1185 .02 .03 .05 .10 .25 .56 1.08 1.97 2.40

0054 -- -- .03 .08 .28 .54 1.30 -- -- 1186 .01 .01 .05 .11 .24 .70 2.07 3.90 5.52

0120 -- -- .05 .29 .76 1.84 2.92 -- -- 1188 -- -- -- .20 .35 .69 -- -- --

0145 .01 .01 .02 .04 .15 .44 1.32 2.71 8.32 1245 -- -- .03 .09 .69 1.46 1.79 -- --

0146 -- -- .02 .10 .30 .68 1.11 -- -- 1246 .10 .10 .10 .10 .30 .90 1.60 3.46 4.60

0174 .03 .04 .10 .10 .20 .50 1.00 2.30 2.90 1267 .01 .01 .04 .07 .20 .57 1.10 2.62 3.60

0178 -- -- .04 .05 .14 .53 1.12 -- -- 1304 .02 .02 .05 .10 .32 .81 1.61 3.39 4.73

0179 .02 .02 .04 .07 .16 .44 1.01 1.86 2.33 1325 .02 .03 .05 .11 .33 .94 1.88 4.00 5.26

0202 .10 .10 .10 .10 .30 .80 1.52 3.10 3.56 1429 .02 .02 .06 .11 .32 .78 1.68 3.75 4.00

0206 .04 .05 .10 .11 .40 .90 1.70 3.30 4.13 1431 .02 .03 .06 .11 .35 .91 1.77 3.89 4.54

0208 -- -- -- -- .19 -- -- -- -- 1432 .02 .02 .05 .11 .36 .92 1.88 3.58 4.56

0211 .01 .01 .01 .04 .15 .49 1.04 2.20 3.02 1433 .02 .03 .05 .13 .37 .89 1.76 4.05 4.85

0244 -- .02 .03 .09 .44 1.11 1.49 2.80 -- 1434 .02 .03 .06 .12 .36 .92 1.77 3.60 4.49

0248 .02 .03 .07 .10 .20 .50 1.05 2.30 2.81 1435 .02 .02 .05 .13 .38 .94 1.93 3.60 4.49

0262 .02 .03 .07 .12 .40 .98 1.81 3.70 4.71 1436 .02 .03 .06 .13 .39 .93 1.80 3.82 4.72

0271 -- -- .06 .35 .83 2.27 2.90 -- -- 1437 -- -- .02 .03 .10 .88 1.96 -- --

0380 .02 .02 .05 .11 .30 .90 1.80 5.01 6.71 1438 .02 .02 .05 .11 .35 .93 1.84 3.52 4.45

0394 -- -- -- .11 .40 .95 -- -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- .04 .23 .92 1.76 3.00 -- -- 1492 .03 .04 .10 .10 .30 .80 1.56 3.30 4.53

0427 -- -- .10 .10 .20 .80 1.90 -- -- 1500 -- -- .05 .09 .24 1.51 2.25 -- --

0428 .01 .01 .02 .05 .20 .70 1.54 3.42 4.26 1528 .03 .04 .09 .10 .25 .70 1.54 3.20 4.17

0429 .01 .01 .02 .05 .27 .96 1.98 4.03 6.88 1541 -- .10 .10 .10 .40 1.15 1.84 4.00 --

0463 .03 .04 .08 .12 .30 .70 1.11 4.26 5.46 1569 .01 .01 .03 .09 .29 .85 1.57 5.18 8.24

0493 -- -- .17 .42 .66 1.16 1.96 -- -- 1632 -- -- -- .05 .50 .90 -- -- --

0495 .02 .02 .04 .09 .20 .53 .96 1.82 2.10 1641 .03 .03 .05 .10 .30 .65 1.29 2.44 2.80

0496 -- -- .02 .05 .15 .32 .67 -- -- 1646 .03 .04 .10 .10 .20 .60 1.20 2.38 3.17

0498 -- -- .04 .09 .22 .26 .30 -- -- 1663 -- -- .10 .10 .50 1.25 3.50 -- --

0509 .03 .04 .09 .10 .30 .81 1.70 3.76 4.48 1671 .03 .04 .08 .10 .30 .87 1.72 3.61 4.80

0518 .02 .03 .10 .10 .37 .90 1.70 3.60 5.00 1680 .02 .02 .05 .13 .34 .85 1.65 3.23 4.22

0521 -- -- .05 .14 .34 .55 1.71 -- -- 1694 .10 .10 .10 .10 .30 .80 1.60 2.62 3.43

0556 .03 .04 .05 .12 .28 .78 1.59 2.84 5.45 1696 .02 .02 .05 .10 .29 .67 1.28 3.00 3.27

0569 .02 .03 .10 .10 .30 .95 1.93 4.66 6.33 1697 -- .03 .05 .10 .22 .61 1.42 2.72 --

0572 .02 .02 .05 .11 .34 .88 1.70 3.78 5.63 1698 .01 .02 .10 .10 .30 .63 1.30 2.90 3.74

0576 .01 .01 .03 .05 .20 .67 1.44 4.66 6.81 1720 .10 .10 .10 .10 .20 .70 1.70 3.20 3.50

0580 .02 .02 .05 .10 .27 .78 1.74 4.05 5.70 1761 -- .01 .01 .07 .24 .53 .99 2.43 --

0587 .01 .02 .04 .10 .33 1.00 1.70 3.89 5.50 1773 .03 .05 .10 .15 .44 1.08 2.00 3.96 4.98

0605 .02 .05 .11 .20 .54 .89 1.83 3.36 6.14 1810 -- -- .08 .12 .30 .54 1.40 -- --

0639 .03 .04 .10 .10 .30 .70 1.67 3.31 4.25 1823 -- -- .04 .14 .45 1.51 2.08 -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 .02 .02 .05 .13 .38 .93 1.89 3.22 3.85

0665 .02 .02 .05 .10 .33 .91 1.71 3.55 4.56 1875 -- -- .21 .34 .82 1.45 2.59 -- --

0689 .02 .03 .05 .10 .30 .79 1.60 3.72 4.64 1876 -- -- .05 .13 .45 .98 1.94 -- --

0690 .10 .10 .10 .10 .30 .60 1.40 2.67 3.77 1889 .01 .01 .01 .06 .23 .86 1.65 3.60 4.76

0691 .02 .02 .04 .10 .32 .83 1.67 3.14 3.92 1903 .10 .10 .10 .10 .30 .70 1.10 2.21 3.55

0708 .10 .10 .10 .10 .30 .65 1.40 4.04 4.57 1914 -- -- .09 .18 .58 1.05 1.39 -- --

0738 .02 .03 .06 .13 .39 .90 1.71 3.41 4.65 1920 .02 .03 .08 .14 .42 1.00 1.67 3.61 4.95

0776 .02 .03 .05 .10 .21 .62 1.25 2.68 3.31 1921 .03 .04 .10 .14 .40 1.05 1.90 4.06 5.02

0779 .10 .10 .10 .10 .20 .60 1.30 2.90 3.10 1937 .02 .03 .07 .15 .45 1.02 1.77 4.08 4.64

0784 .02 .02 .07 .10 .20 .60 1.20 2.71 3.50 1956 .02 .02 .06 .10 .37 .95 1.81 3.80 5.04

0786 .01 .01 .02 .04 .17 .48 1.12 2.40 3.34 1970 -- -- .04 .08 .56 1.41 2.82 -- --

0917 .02 .03 .06 .14 .41 1.05 2.05 4.22 5.52 2014 .01 .01 .01 .03 .13 .60 1.53 3.40 4.71

0923 -- -- .13 .48 1.09 1.66 3.01 -- -- 2015 .01 .01 .01 .04 .16 .60 1.52 3.75 5.01

0926 .02 .03 .06 .10 .30 .85 1.70 3.30 4.00 2019 -- -- .09 .28 1.00 1.90 2.11 -- --

0950 -- -- .03 .05 .16 .35 .73 -- -- 2024 .03 .03 .09 .15 .40 .90 1.67 3.49 4.32

0996 -- -- .07 .18 .96 1.33 3.77 -- -- 2042 -- -- .01 .07 .20 .25 .52 -- --

1013 .10 .10 .10 .10 .20 .57 1.50 4.05 7.38 2043 -- .01 .02 .05 .12 .38 .80 1.49 --

1017 .02 .02 .06 .10 .30 .70 1.40 2.78 3.70 2048 .03 .03 .10 .10 .20 .70 1.50 3.25 4.61

1042 -- -- .29 .46 .87 1.77 3.46 -- -- 2050 -- .01 .01 .03 .10 .43 1.54 4.95 --

1048 -- -- .08 .21 .39 .89 1.56 -- -- 2051 -- .02 .05 .07 .26 .79 1.18 3.13 --

1053 .02 .02 .05 .10 .27 .75 1.50 3.25 3.85 2053 -- -- .02 .04 .11 .27 .99 -- --

1057 .02 .03 .05 .10 .28 .68 1.27 2.33 3.30 2073 .02 .03 .05 .10 .32 .83 1.59 3.75 5.31

1063 -- -- .05 .27 .81 1.44 3.13 -- -- 2082 .02 .02 .05 .10 .20 .51 1.02 2.30 3.03

1068 .03 .04 .09 .12 .40 .90 1.73 3.24 4.36 2086 .02 .03 .10 .10 .40 .90 1.70 3.40 4.67

1080 .03 .03 .05 .10 .24 .47 .88 2.13 2.68 2088 -- -- .10 .10 .40 1.30 1.76 -- --

1081 .02 .03 .05 .14 .38 .93 1.81 3.39 4.23 2090 .10 .10 .10 .10 .40 .90 1.70 3.47 4.57

1133 -- -- .01 .01 .08 .51 .92 -- -- 2096 .03 .04 .10 .11 .39 .90 1.64 3.50 4.39

1136 .01 .01 .01 .03 .13 .49 1.35 3.33 4.81 2128 .02 .03 .05 .12 .40 .99 1.79 3.87 4.97

1138 -- -- .08 .25 .76 1.35 2.00 -- -- 2131 .03 .05 .10 .10 .30 .80 1.50 3.25 4.20

1139 -- .02 .05 .10 .41 .85 2.39 3.61 -- 2142 -- -- .22 .32 .91 2.00 2.62 -- --

Appendix 4–4.4. Empirical distribution of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
256 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 0.02 0.04 0.14 0.35 0.97 -- -- 3463 -- -- 0.03 0.09 0.34 0.93 2.08 -- --

2206 0.02 0.03 .06 .12 .38 .96 2.07 3.51 6.19 3476 0.02 0.02 .05 .11 .31 .83 1.67 3.53 4.25

2238 .01 .01 .02 .04 .14 .45 1.08 2.45 2.75 3485 -- -- .10 .10 .42 1.67 2.51 -- --

2240 -- .01 .02 .04 .20 .48 1.06 2.02 -- 3507 .06 .09 .10 .10 .30 .90 1.80 3.60 4.32

2242 .01 .01 .02 .07 .30 .85 1.65 3.18 3.80 3546 .02 .03 .08 .15 .40 1.00 1.94 3.86 5.00

2244 .01 .01 .03 .10 .31 .85 1.73 3.65 4.64 3547 .02 .02 .05 .12 .38 1.01 1.76 3.15 3.38

2247 -- -- .02 .06 .28 1.03 1.42 -- -- 3579 -- .03 .08 .12 .25 1.05 1.74 3.44 --

2309 .03 .04 .10 .23 .55 1.10 1.90 3.84 5.51 3642 .02 .03 .10 .13 .40 .90 1.80 3.77 5.14

2312 .07 .10 .10 .20 .50 1.00 1.70 3.27 4.18 3646 .03 .03 .06 .13 .36 .86 1.61 3.62 4.72

2334 -- .03 .09 .25 .62 1.28 3.06 4.66 -- 3668 -- -- .36 .69 1.03 2.06 3.38 -- --

2336 .02 .03 .07 .17 .42 1.00 1.56 3.10 3.69 3673 -- -- .04 .14 .88 1.75 2.42 -- --

2354 -- -- .05 .09 .14 .59 1.09 -- -- 3686 .04 .07 .10 .10 .32 .90 1.74 3.18 3.70

2355 -- -- .03 .05 .26 .87 1.95 -- -- 3691 .02 .03 .10 .10 .33 .90 1.64 3.28 4.57

2357 .01 .01 .01 .02 .10 .48 1.21 3.16 4.69 3734 -- -- .03 .15 .80 3.22 4.03 -- --

2360 .01 .01 .01 .04 .14 .52 1.24 2.82 3.68 3771 .10 .10 .10 .10 .30 .90 1.70 3.70 4.30

2361 .02 .02 .05 .10 .20 .60 1.09 2.86 8.63 3789 -- .01 .02 .07 .13 .30 .57 1.29 --

2394 .02 .02 .05 .11 .37 .90 1.73 3.70 4.99 3826 .01 .03 .06 .15 .35 .85 1.46 2.66 3.44

2404 .02 .02 .05 .10 .33 .88 1.63 3.40 4.60 3831 .03 .03 .05 .15 .39 1.02 2.06 3.32 5.17

2415 .02 .03 .08 .17 .47 1.09 2.05 4.02 5.21 3841 .02 .02 .05 .15 .32 .97 1.74 4.06 5.48

2462 .03 .04 .09 .15 .43 1.00 1.90 3.76 4.70 3871 .02 .03 .05 .11 .34 .77 1.46 3.04 3.79

2528 .03 .03 .05 .10 .25 .86 1.90 2.69 2.79 3884 -- -- .06 .09 .30 1.44 3.30 -- --

2617 .02 .02 .05 .10 .27 .64 1.34 3.10 4.11 3941 -- .02 .05 .11 .70 1.43 2.16 4.84 --

2619 .02 .03 .06 .15 .30 .71 1.16 2.77 3.86 3963 -- -- -- .03 .04 .14 -- -- --

2621 .02 .03 .06 .10 .30 .69 1.39 2.77 3.30 4040 .02 .03 .06 .12 .34 .75 1.37 3.14 3.82

2675 .03 .04 .10 .10 .30 .85 1.70 3.94 4.87 4058 -- -- .06 .13 .56 1.39 2.87 -- --

2676 .10 .10 .10 .10 .30 .90 1.88 3.36 4.13 4098 .03 .04 .10 .10 .20 .50 1.00 2.10 2.65

2679 .02 .02 .05 .10 .20 .65 1.50 3.50 4.48 4100 .02 .02 .05 .10 .28 .68 1.42 3.46 4.88

2715 .02 .03 .07 .12 .36 .83 1.60 3.31 4.29 4137 .10 .10 .10 .10 .30 .90 1.60 3.21 4.00

2744 .03 .03 .07 .10 .30 .75 1.36 2.98 3.69 4191 .03 .04 .07 .10 .28 .80 1.60 3.50 4.85

2758 .01 .02 .03 .05 .15 .49 1.53 4.31 4.79 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- .01 .04 .16 .66 1.61 -- -- 4257 .04 .05 .10 .15 .47 1.09 2.02 4.15 5.00

2797 .01 .01 .01 .03 .10 .28 .58 1.42 1.79 4258 .10 .10 .10 .10 .40 .90 1.90 3.35 5.92

2811 .02 .02 .07 .10 .24 .70 1.40 3.01 3.60 4278 .02 .02 .05 .12 .34 .91 1.75 3.47 4.27

2813 -- -- .06 .23 .41 .80 2.16 -- -- 4299 .02 .03 .06 .11 .26 .51 .84 1.24 1.48

2814 -- -- .01 .03 .04 .25 .99 -- -- 4300 .01 .01 .02 .06 .24 .80 1.73 4.02 5.39

2815 .10 .10 .10 .10 .30 .60 1.39 3.18 4.51 4305 .01 .01 .02 .05 .22 .76 1.62 3.53 5.16

2818 .02 .02 .05 .11 .35 .79 1.49 3.82 4.79 4307 .01 .01 .02 .05 .29 .83 1.77 4.45 7.11

2986 .02 .03 .08 .18 .55 1.35 2.19 3.63 4.31 4309 .02 .02 .05 .11 .35 .97 1.92 4.01 5.17

3005 .02 .03 .10 .10 .35 .89 1.51 3.11 3.90 4311 .02 .02 .05 .13 .39 1.05 2.04 4.16 5.28

3033 .02 .02 .04 .08 .15 .33 .68 1.43 1.97 4313 .02 .03 .05 .16 .40 1.08 2.30 4.23 7.48

3034 -- -- -- -- .43 -- -- -- -- 4319 -- .04 .07 .14 .38 .86 1.39 3.41 --

3047 -- -- .04 .10 .53 1.06 2.30 -- -- 4329 .02 .03 .06 .14 .39 .98 1.94 4.15 5.34

3103 -- -- .13 .19 .29 1.04 2.44 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 .02 .03 .08 .15 .42 .96 1.80 3.78 4.73 4375 .10 .10 .10 .10 .30 .80 1.70 3.85 5.09

3156 .04 .05 .10 .10 .41 1.00 2.18 5.88 7.05 4392 .02 .02 .05 .15 .45 1.12 2.23 4.78 7.22

3171 .03 .03 .07 .13 .38 .92 1.76 3.49 4.68 4425 .03 .04 .09 .10 .20 .57 1.12 2.31 2.90

3189 .02 .02 .04 .09 .17 .43 .90 2.23 3.16 4440 .02 .02 .05 .10 .30 .75 1.44 3.28 3.93

3260 .01 .01 .04 .10 .31 .81 1.59 2.57 4.02 4476 .03 .05 .10 .10 .36 .83 1.54 3.20 4.11

3267 .01 .02 .03 .05 .17 .55 1.14 3.89 5.35 4498 -- -- .02 .06 .17 .38 .60 -- --

3270 .05 .10 .10 .10 .30 .70 1.30 2.54 3.60 4517 .02 .02 .05 .12 .35 .85 1.67 3.34 3.77

3272 -- -- .02 .04 .12 .22 .35 -- -- 4520 .10 .10 .10 .10 .30 .80 1.60 3.30 3.76

3277 -- -- .01 .02 .10 .23 .64 -- -- 4525 -- -- .04 .07 .27 .81 4.26 -- --

3278 .02 .03 .05 .10 .22 .60 1.17 2.39 3.30 4563 -- -- .04 .06 .28 .62 1.89 -- --

3280 .01 .01 .03 .05 .16 .41 .90 1.92 2.56 4570 .02 .03 .08 .10 .30 .70 1.40 2.90 4.10

3281 -- -- .04 .10 .25 .51 .99 -- -- 4577 .03 .04 .10 .17 .45 1.00 1.90 3.81 4.70

3283 .01 .01 .02 .07 .27 .77 1.62 3.42 4.57 4591 .02 .03 .05 .12 .39 .93 1.76 3.55 4.67

3284 .01 .02 .10 .10 .33 .86 1.70 3.39 4.10 4670 .02 .02 .06 .10 .29 .70 1.40 2.82 3.50

3285 .03 .08 .10 .10 .37 .90 1.72 3.25 4.10 4671 .01 .01 .03 .06 .27 .61 1.15 2.86 3.14

3329 .01 .02 .05 .10 .27 .75 1.57 3.54 4.86 4679 .03 .04 .10 .10 .30 .84 1.70 3.80 4.91

3335 .02 .03 .07 .20 .43 1.19 2.04 4.77 8.98 4696 -- -- .05 .10 .28 .63 1.10 -- --

3370 .02 .03 .06 .15 .42 .99 1.85 3.77 4.71 4703 .02 .02 .05 .10 .20 .68 1.34 3.01 3.46

3410 .04 .05 .10 .10 .30 .70 1.30 2.71 3.30 4704 .02 .03 .06 .16 .40 1.06 2.55 4.64 6.58

3415 .02 .03 .10 .10 .37 .85 1.70 3.30 4.55 4731 .01 .01 .01 .04 .17 .53 1.14 3.45 7.60

3430 .01 .01 .02 .06 .25 .77 1.68 3.98 5.79 4792 .10 .10 .10 .10 .40 .90 1.70 3.00 3.80

3431 .01 .01 .02 .05 .21 .77 1.50 4.86 6.32 4819 .10 .10 .10 .20 .40 1.00 1.92 3.80 4.14

3441 -- -- .05 .10 .30 .79 2.02 -- -- 4852 -- -- .15 .35 .69 1.10 2.55 -- --

3442 .02 .03 .05 .09 .21 .49 1.11 2.25 2.69 4866 .03 .04 .09 .13 .40 .91 1.79 3.40 4.06

3446 .03 .03 .06 .11 .30 .66 1.17 2.28 3.01 4876 .10 .10 .10 .10 .40 1.12 2.57 4.61 6.62

3460 -- -- .05 .10 .55 1.15 1.64 -- -- 4878 .02 .03 .07 .15 .43 1.10 2.17 4.55 5.74

3462 .02 .04 .07 .12 .32 .75 1.20 2.31 4.29 4880 .02 .03 .06 .10 .25 .60 1.17 2.50 3.11

Appendix 4–4.4. Empirical distribution of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 257

4920 0.02 0.03 0.08 0.10 0.30 0.80 1.53 3.49 4.50 5957 0.03 0.04 0.10 0.10 0.30 0.88 1.60 3.30 4.56

4934 -- -- -- .08 .15 .36 -- -- -- 5958 .01 .01 .05 .10 .34 .90 1.68 2.76 3.37

4972 .03 .03 .09 .10 .30 .80 1.50 3.22 4.22 5973 -- .02 .03 .05 .17 .67 1.61 3.33 --

4973 .02 .05 .10 .23 .58 1.15 2.01 3.70 4.04 5996 .03 .03 .09 .10 .30 .83 1.60 3.20 4.18

4974 .02 .02 .05 .10 .26 .63 1.19 2.57 3.46 6017 .01 .01 .03 .05 .20 .59 1.25 2.60 2.93

4975 .10 .10 .10 .10 .40 1.00 1.90 4.00 4.90 6024 .02 .03 .05 .13 .47 1.26 2.40 6.08 6.54

4978 .02 .02 .04 .10 .35 .78 1.81 3.58 5.22 6050 -- -- .15 .24 .40 1.03 1.73 -- --

4979 -- -- .09 .34 .65 1.31 2.98 -- -- 6104 .02 .03 .05 .10 .20 .48 .90 2.11 2.83

4982 .02 .03 .05 .11 .30 .75 1.41 2.83 3.55 6108 .02 .04 .10 .18 .50 1.10 2.00 4.31 5.10

5018 .02 .03 .06 .13 .38 .90 1.55 2.65 3.53 6136 .03 .04 .10 .10 .20 .52 1.00 2.24 2.76

5048 .02 .03 .09 .10 .20 .60 1.20 2.72 3.63 6166 -- .03 .05 .07 .20 .53 1.21 2.22 --

5049 -- .10 .10 .10 .20 .50 .90 4.41 -- 6176 .02 .02 .05 .14 .44 .91 2.10 4.15 6.27

5056 -- -- -- .20 .37 .69 -- -- -- 6177 .03 .04 .10 .15 .40 1.00 2.00 4.09 5.30

5057 .01 .01 .01 .03 .11 .39 1.10 2.81 3.28 6210 .02 .03 .10 .10 .40 .97 1.80 4.00 4.60

5060 .01 .01 .02 .05 .17 .64 1.64 5.26 6.39 6211 .01 .01 .05 .10 .31 .90 1.85 3.70 4.28

5081 .02 .02 .05 .14 .45 1.00 1.80 3.73 4.18 6270 .10 .10 .10 .20 .50 1.10 2.00 4.08 4.89

5094 .02 .03 .10 .10 .40 .90 1.80 3.70 4.31 6275 -- -- -- -- .00 -- -- -- --

5113 .02 .03 .08 .10 .29 .75 1.62 3.80 5.10 6276 -- -- .06 .18 .91 1.73 2.75 -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 .02 .03 .06 .14 .40 .98 1.76 3.35 4.27

5123 -- -- .07 .18 .29 .55 2.45 -- -- 6434 -- -- .09 .13 .45 1.00 1.73 -- --

5192 .02 .03 .08 .13 .39 .94 1.85 3.51 4.58 6504 .02 .03 .08 .10 .20 .60 1.20 2.73 3.30

5193 .02 .03 .06 .10 .30 .90 1.70 3.54 4.60 6558 -- -- .05 .06 .38 .97 1.90 -- --

5224 .01 .02 .05 .14 .45 1.11 1.98 4.49 5.08 6615 .07 .10 .10 .10 .30 .70 1.40 3.53 4.72

5228 .01 .02 .04 .09 .32 .91 1.76 3.44 4.23 6660 -- .02 .05 .15 .39 .91 1.95 4.80 --

5235 -- -- .03 .05 .36 .81 1.91 -- -- 6663 -- .01 .04 .10 .27 .65 1.53 3.69 --

5247 .02 .03 .09 .10 .26 .60 1.20 2.40 3.10 6734 .01 .02 .04 .10 .25 .65 1.25 2.69 3.20

5258 .02 .03 .06 .14 .38 .90 1.80 3.84 4.57 6736 .02 .03 .09 .10 .21 .64 1.26 3.00 3.61

5303 .02 .03 .05 .10 .28 .76 1.49 3.55 5.05 6740 -- -- .10 .32 .82 3.35 3.56 -- --

5312 .04 .05 .10 .10 .30 .79 1.48 2.96 4.46 6750 .01 .01 .02 .05 .28 .87 2.12 5.56 9.47

5341 -- -- .11 .27 .48 1.57 3.90 -- -- 6757 .01 .01 .05 .10 .38 .97 1.80 3.60 4.69

5342 -- -- -- -- .00 -- -- -- -- 6775 .01 .01 .04 .09 .25 .63 1.14 2.65 3.34

5348 .03 .05 .10 .14 .50 1.10 2.00 3.90 4.67 6776 .02 .03 .09 .10 .26 .60 1.15 2.46 3.10

5358 .02 .02 .05 .10 .29 .71 1.41 2.76 3.47 6788 .02 .03 .06 .16 .50 .93 1.80 3.99 4.62

5398 .02 .03 .06 .13 .40 .95 1.89 3.78 5.28 6792 .02 .02 .06 .10 .20 .47 .93 1.91 2.23

5410 .02 .02 .07 .10 .25 .60 1.11 2.74 3.70 6794 -- -- .08 .55 1.51 2.82 3.22 -- --

5411 .01 .01 .01 .04 .15 .49 1.08 2.45 3.23 6834 .10 .10 .10 .20 .50 1.10 2.06 4.00 4.90

5424 .01 .01 .01 .06 .34 .99 2.02 3.56 7.12 6893 .02 .03 .08 .10 .20 .40 .80 2.10 2.70

5429 .02 .02 .04 .09 .26 .80 1.68 3.61 4.51 6935 .03 .04 .10 .10 .20 .60 1.10 2.48 3.29

5431 -- -- .14 .35 .70 1.40 3.03 -- -- 6981 .02 .04 .05 .15 .40 .79 1.68 5.01 5.62

5461 .02 .03 .06 .15 .44 1.04 2.00 4.20 5.42 7020 .02 .02 .05 .13 .38 .99 1.92 3.87 8.06

5463 .10 .10 .10 .10 .40 1.00 1.90 3.88 5.46 7060 .03 .04 .10 .10 .30 .70 1.40 2.62 3.40

5471 -- -- .02 .04 .07 .28 .48 -- -- 7066 .03 .03 .10 .14 .45 1.06 2.00 3.93 4.93

5477 -- -- .07 .15 .26 .61 1.53 -- -- 7074 .02 .02 .05 .10 .20 .58 1.05 2.51 3.64

5528 .03 .03 .08 .17 .45 1.02 1.86 3.70 4.45 7097 .02 .02 .08 .16 .34 .83 1.75 3.58 4.51

5579 -- -- -- -- .55 -- -- -- -- 7116 .02 .02 .05 .10 .25 .62 1.14 2.62 3.80

5580 -- -- .07 .16 .44 .90 1.87 -- -- 7140 .02 .02 .05 .10 .30 .89 1.97 4.72 5.98

5589 .01 .01 .02 .05 .18 .43 .81 1.48 1.66 7173 .01 .01 .02 .05 .27 .94 2.14 5.40 6.71

5590 .02 .02 .04 .08 .19 .44 .94 1.92 3.10 7174 .01 .01 .02 .06 .29 .91 1.94 4.50 5.98

5591 .02 .02 .05 .10 .23 .50 .89 1.70 2.53 7213 .02 .02 .05 .14 .39 .92 1.85 3.71 4.50

5592 .02 .02 .04 .07 .18 .43 .79 1.83 2.17 7243 .03 .04 .10 .10 .30 .80 1.41 2.96 4.00

5594 .02 .02 .04 .08 .17 .40 .78 1.90 2.23 7262 -- .01 .02 .04 .12 .30 .58 1.23 --

5595 -- -- -- -- .03 -- -- -- -- 7274 .04 .05 .10 .19 .40 .90 1.65 3.64 4.44

5596 .10 .10 .10 .10 .20 .50 1.00 2.10 2.67 7300 .02 .03 .05 .11 .33 .83 1.56 3.11 3.77

5600 .02 .02 .04 .09 .20 .48 .90 2.33 2.89 7311 -- -- .10 .20 .29 1.05 1.88 -- --

5618 -- -- .08 .15 .36 1.16 1.93 -- -- 7363 -- -- .08 .17 .71 1.25 2.11 -- --

5650 -- -- .08 .20 .45 .64 1.59 -- -- 7422 .02 .02 .06 .10 .30 .80 1.68 3.64 4.50

5656 .10 .10 .10 .10 .20 .60 1.30 2.90 3.56 7431 .02 .03 .06 .10 .21 .60 1.16 2.46 3.16

5658 .02 .02 .05 .10 .25 .60 1.21 3.01 4.00 7481 .02 .02 .05 .10 .17 .40 .90 2.47 3.23

5661 .10 .10 .10 .10 .20 .60 1.50 6.51 7.24 7497 .10 .10 .10 .10 .30 .90 1.66 3.43 4.28

5666 -- -- .05 .09 .29 .68 1.57 -- -- 7498 .08 .10 .10 .10 .30 .90 1.63 3.26 6.06

5695 .02 .04 .07 .15 .42 .95 1.72 3.65 4.92 7499 .05 .07 .10 .10 .30 .80 1.52 3.11 4.02

5742 -- -- .04 .05 .17 .29 1.24 -- -- 7531 .03 .03 .06 .11 .36 1.02 1.92 3.52 4.06

5766 -- -- .12 .30 .54 1.99 2.80 -- -- 7534 .02 .03 .05 .11 .30 .85 1.57 3.48 4.41

5770 .02 .03 .07 .10 .26 .65 1.30 2.81 3.73 7556 .03 .04 .10 .10 .30 .85 1.60 3.50 4.89

5775 -- -- .05 .05 .15 .73 .97 -- -- 7594 .02 .03 .06 .15 .44 1.01 1.97 3.84 5.22

5779 -- -- .13 .19 .48 .93 2.50 -- -- 7596 .01 .02 .04 .10 .40 1.16 2.02 3.43 4.17

5840 .02 .03 .05 .11 .35 .85 1.75 3.33 4.74 7608 .01 .01 .03 .08 .28 .82 1.59 3.25 4.87

5890 .01 .01 .02 .04 .15 .44 1.02 2.25 2.85 7622 -- -- .01 .01 .04 .23 .73 -- --

5891 .02 .03 .05 .10 .24 .59 .99 1.86 2.30 7700 .02 .02 .05 .11 .36 .94 1.91 3.88 4.67

5897 .10 .10 .10 .10 .40 .90 1.80 3.70 4.30 7706 .02 .02 .07 .10 .30 .70 1.40 2.98 4.07

Appendix 4–4.4. Empirical distribution of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
258 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 -- 0.03 0.08 0.14 0.41 0.84 2.39 4.83 -- 8910 -- -- 0.04 0.12 0.42 1.19 1.93 -- --

7745 0.01 .02 .06 .13 .43 .96 1.91 4.68 6.48 8911 0.01 0.01 .03 .08 .26 .77 1.52 3.19 4.10

7922 .01 .01 .02 .05 .15 .31 .70 1.33 1.96 8924 .02 .02 .05 .09 .20 .41 .85 1.46 1.80

7936 .03 .04 .10 .14 .45 1.09 1.90 4.10 5.70 8929 -- -- .05 .14 1.14 1.85 2.81 -- --

7943 .01 .01 .02 .04 .17 .54 1.20 2.38 3.49 8942 .03 .06 .10 .10 .40 1.02 2.00 4.40 5.29

7944 -- .01 .01 .03 .24 .58 1.48 2.86 -- 8944 .01 .01 .03 .10 .33 .87 1.72 3.53 4.69

7945 .01 .01 .01 .04 .17 .63 1.39 3.58 4.74 8996 .01 .02 .04 .10 .31 .85 1.69 3.44 4.84

7947 .03 .05 .10 .10 .30 .90 1.90 5.23 5.58 9014 -- -- .13 .26 .59 .97 2.09 -- --

7948 .02 .02 .04 .09 .26 .75 1.67 3.50 4.23 9037 .02 .02 .04 .07 .17 .40 .86 1.75 2.61

7951 .02 .03 .07 .15 .40 1.01 1.85 3.25 3.74 9106 .02 .02 .03 .05 .13 .37 .77 1.92 3.82

7953 .02 .02 .05 .08 .23 .66 1.42 3.03 3.68 9107 -- -- .05 .08 .20 .79 .90 -- --

7981 .02 .02 .04 .08 .28 .79 1.80 3.08 3.63 9129 -- .02 .04 .05 .13 .43 1.25 3.21 --

7990 .01 .01 .02 .06 .17 .58 1.62 4.53 4.80 9163 .02 .03 .07 .10 .31 .76 1.54 3.22 3.90

7992 -- -- .10 .15 .45 1.48 2.15 -- -- 9213 .01 .01 .02 .07 .28 .74 1.67 3.64 5.04

7997 .02 .02 .04 .10 .28 .63 1.68 3.46 3.65 9214 -- -- .12 .22 .38 1.28 2.17 -- --

7999 -- -- .02 .05 .20 .45 1.14 -- -- 9222 .01 .01 .04 .10 .28 .85 1.67 3.96 4.60

8022 -- .02 .05 .07 .20 .73 1.54 2.75 -- 9248 .02 .03 .05 .10 .27 .64 1.26 2.55 3.16

8023 .03 .03 .07 .10 .24 .60 1.25 2.68 3.70 9266 -- .02 .05 .15 .28 .95 1.47 2.92 --

8047 .02 .03 .07 .10 .32 .88 1.61 3.20 3.92 9270 .03 .04 .10 .10 .20 .42 .90 1.90 2.75

8060 .01 .02 .03 .05 .17 .59 1.67 3.23 3.62 9295 -- .01 .02 .04 .11 .27 .55 1.46 --

8062 -- -- .02 .04 .15 .79 2.69 -- -- 9304 -- -- -- .10 .17 .26 -- -- --

8068 -- -- .02 .04 .11 .33 1.20 -- -- 9307 .03 .04 .10 .15 .38 .79 1.45 3.20 3.45

8081 .02 .03 .06 .10 .26 .76 1.60 3.61 4.90 9328 .02 .02 .05 .10 .28 .64 1.27 2.82 3.10

8089 -- -- .03 .10 .23 .80 1.61 -- -- 9329 -- -- .04 .06 .29 1.03 1.91 -- --

8221 -- -- .11 .33 .60 .99 2.30 -- -- 9345 -- -- -- -- .75 -- -- -- --

8252 .02 .03 .07 .10 .23 .61 1.20 2.48 3.20 9363 .01 .01 .01 .05 .18 .60 1.37 3.47 4.35

8265 .02 .02 .05 .11 .35 .96 1.90 4.17 6.73 9364 .01 .01 .02 .05 .19 .65 1.53 3.72 5.40

8289 -- .02 .05 .15 .45 .83 1.12 1.55 -- 9365 -- -- .05 .08 .12 .30 .80 -- --

8305 .02 .03 .05 .10 .19 .40 .77 1.71 2.17 9371 .03 .04 .05 .10 .31 1.09 1.92 2.79 3.49

8335 .03 .03 .06 .16 .49 1.11 1.98 3.86 4.57 9417 .01 .02 .05 .10 .32 .91 1.70 3.17 3.96

8400 .02 .02 .05 .10 .20 .44 .85 2.49 3.44 9419 .01 .01 .02 .06 .25 .77 1.56 3.12 3.91

8445 .02 .03 .05 .11 .32 .90 1.84 3.68 4.72 9435 -- .02 .06 .11 .29 .68 1.04 3.97 --

8446 .02 .03 .10 .10 .30 .87 1.70 3.31 4.10 9491 .03 .03 .07 .10 .35 .94 1.80 3.50 4.60

8451 .02 .02 .05 .09 .24 .67 1.27 3.29 3.86 9499 .03 .04 .10 .10 .30 .70 1.40 2.74 3.39

8531 .02 .03 .06 .14 .38 .92 1.60 3.23 3.81 9522 -- -- .11 .24 .45 2.33 5.26 -- --

8541 -- .01 .05 .12 .39 .94 1.86 3.92 -- 9527 .03 .04 .10 .10 .20 .60 1.20 2.40 3.14

8544 .04 .05 .10 .10 .30 .95 1.71 4.27 6.13 9532 .02 .03 .08 .10 .30 .80 1.60 3.50 4.75

8545 -- -- .03 .09 .30 .57 .93 -- -- 9544 -- -- -- .10 .24 4.34 -- -- --

8563 .10 .10 .10 .10 .40 .90 1.70 4.20 4.70 9565 .02 .03 .09 .10 .30 .70 1.50 2.94 4.00

8566 .01 .02 .04 .09 .25 .71 1.31 2.49 3.38 9570 .10 .10 .10 .10 .30 .60 1.50 2.70 3.36

8583 .10 .10 .10 .10 .30 .80 1.40 2.90 3.63 9574 -- -- .10 .10 .35 .72 1.65 -- --

8584 .03 .04 .10 .10 .30 .90 1.60 3.14 4.05 9588 .02 .02 .06 .10 .20 .60 1.50 3.52 4.40

8623 .05 .06 .10 .11 .40 .90 1.70 3.11 3.96 9665 .02 .03 .10 .12 .40 1.00 1.80 3.96 5.00

8625 .02 .02 .05 .10 .33 .86 1.52 3.43 4.13 9715 .02 .02 .08 .10 .36 .90 1.65 3.20 4.21

8630 .02 .03 .06 .10 .26 .68 1.31 2.48 2.78 9729 .01 .01 .02 .06 .25 .73 1.45 3.00 3.93

8631 .02 .03 .05 .10 .30 .68 1.54 3.21 3.90 9772 .01 .02 .04 .09 .26 .80 1.65 4.74 5.86

8646 .02 .02 .05 .10 .34 .85 1.61 3.26 3.95 9814 -- -- .04 .10 .36 .92 1.82 -- --

8647 .03 .04 .10 .10 .20 .60 1.10 2.49 3.24 9815 .02 .03 .07 .12 .34 .92 1.80 3.87 5.16

8677 .01 .03 .09 .15 .37 .88 1.56 3.12 4.05 9816 -- .01 .04 .07 .25 .78 1.92 4.41 --

8696 -- -- .05 .10 .42 1.30 2.57 -- -- 9817 .04 .06 .10 .10 .31 .80 1.50 3.29 4.33

8743 .02 .03 .08 .13 .41 1.02 1.97 4.16 4.83 9829 .02 .02 .05 .10 .19 .43 1.00 2.10 2.73

8761 .02 .03 .10 .10 .20 .57 1.20 2.40 3.03 9830 .01 .01 .03 .06 .11 .41 .85 1.72 2.28

8778 .03 .05 .10 .11 .40 1.00 1.90 3.70 4.40 9858 .02 .02 .05 .10 .27 .63 1.25 2.53 3.16

8845 .03 .03 .08 .10 .30 .83 1.76 3.97 5.24 9893 .02 .03 .06 .10 .32 .79 1.50 3.08 4.32

8859 .02 .03 .07 .16 .47 1.07 1.87 3.84 4.31 9916 .03 .05 .10 .19 .41 1.10 2.00 3.93 4.90

8898 .02 .03 .07 .15 .42 .93 1.90 3.95 5.29 9976 .02 .02 .06 .10 .24 .70 1.40 3.06 4.04

8908 -- -- .06 .12 .40 1.02 1.70 -- --

Appendix 4–4.4. Empirical distribution of storm depth defined by 18-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 259

Appendix 4–4.5. Empirical distribution of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- -- 0.03 0.09 0.47 -- -- -- 1154 0.01 0.01 0.02 0.06 0.23 0.94 1.80 3.34 4.77

0016 0.01 0.01 0.02 .06 .25 .72 1.46 2.94 3.74 1165 .01 .02 .04 .09 .29 .78 1.44 2.64 3.41

0050 .02 .02 .05 .14 .40 .95 1.63 2.79 3.60 1185 .02 .03 .05 .10 .25 .56 1.08 2.08 2.69

0054 -- -- .04 .12 .34 .70 1.31 -- -- 1186 -- .02 .05 .12 .28 .76 2.10 4.16 --

0120 -- -- .05 .47 .76 2.22 3.37 -- -- 1188 -- -- -- .20 .35 .69 -- -- --

0145 .01 .01 .02 .05 .17 .53 1.51 3.08 11.52 1245 -- -- .03 .13 .97 1.55 1.80 -- --

0146 -- -- .07 .15 .34 .75 1.16 -- -- 1246 .10 .10 .10 .10 .40 .95 1.80 4.03 5.00

0174 .03 .04 .10 .10 .20 .60 1.10 2.69 3.12 1267 .01 .01 .04 .07 .22 .64 1.20 2.79 3.76

0178 -- -- .04 .05 .18 .94 1.58 -- -- 1304 .02 .02 .05 .10 .36 .88 1.80 3.93 5.13

0179 .02 .02 .04 .07 .19 .50 1.17 2.36 2.53 1325 .02 .03 .05 .12 .37 1.08 2.06 4.47 5.54

0202 .10 .10 .10 .10 .35 .90 1.80 3.26 3.68 1429 .02 .03 .06 .11 .35 .88 1.77 3.85 4.38

0206 .04 .06 .10 .20 .41 1.00 1.80 3.50 4.58 1431 .02 .03 .06 .13 .39 1.00 1.85 4.10 4.85

0208 -- -- -- -- .19 -- -- -- -- 1432 .02 .02 .05 .13 .40 1.00 1.95 3.85 4.97

0211 .01 .01 .02 .05 .17 .53 1.14 2.58 3.41 1433 .02 .03 .06 .15 .40 .96 1.92 4.19 5.08

0244 -- .02 .03 .09 .45 1.25 1.57 3.33 -- 1434 .02 .03 .06 .14 .39 1.01 1.93 3.79 4.74

0248 .02 .03 .07 .10 .20 .57 1.10 2.48 3.10 1435 .02 .02 .06 .15 .43 1.03 2.10 4.05 4.74

0262 .02 .03 .07 .14 .43 1.03 1.96 3.99 5.15 1436 .03 .03 .06 .15 .42 1.05 1.94 3.95 4.93

0271 -- -- .06 .28 .77 2.49 3.16 -- -- 1437 -- -- .02 .04 .11 .97 1.98 -- --

0380 .02 .02 .05 .12 .34 .96 1.99 5.28 6.75 1438 .02 .03 .05 .13 .39 .99 1.97 3.69 4.60

0394 -- -- -- .28 .47 1.10 -- -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- .10 .47 1.05 3.15 4.55 -- -- 1492 .03 .05 .10 .10 .30 .87 1.70 3.40 4.77

0427 -- -- .10 .10 .30 .80 1.90 -- -- 1500 -- -- .05 .07 .24 1.63 3.27 -- --

0428 .01 .01 .02 .05 .24 .79 1.68 3.65 4.68 1528 .03 .04 .10 .10 .30 .80 1.61 3.41 4.39

0429 .01 .01 .02 .10 .32 1.09 2.19 4.46 7.52 1541 -- -- .10 .12 .60 1.35 2.17 -- --

0463 -- .04 .08 .14 .30 .73 1.17 4.51 -- 1569 .02 .02 .03 .10 .32 .93 1.70 6.04 8.65

0493 -- -- .14 .48 .82 1.56 2.48 -- -- 1632 -- -- -- .07 .61 .95 -- -- --

0495 .02 .02 .04 .10 .23 .60 1.02 2.06 2.38 1641 .03 .03 .05 .10 .32 .66 1.34 2.47 3.35

0496 -- -- .03 .09 .17 .41 .73 -- -- 1646 .03 .05 .10 .10 .22 .60 1.30 2.55 3.32

0498 -- -- .04 .17 .24 .27 .31 -- -- 1663 -- -- .10 .20 .60 1.48 5.00 -- --

0509 .03 .04 .09 .11 .35 .90 1.80 4.00 5.40 1671 .03 .04 .10 .10 .39 .97 1.90 4.05 5.09

0518 .02 .03 .10 .10 .40 1.00 1.90 3.70 5.11 1680 .03 .03 .06 .14 .35 .90 1.72 3.66 4.55

0521 -- -- .05 .14 .33 .55 1.72 -- -- 1694 .10 .10 .10 .10 .30 .80 1.70 3.20 3.64

0556 -- .04 .08 .14 .29 .91 1.67 3.21 -- 1696 .02 .02 .05 .10 .30 .73 1.40 3.05 3.45

0569 .02 .04 .10 .10 .40 1.08 2.20 5.20 6.50 1697 -- .03 .05 .11 .22 .67 1.63 2.75 --

0572 .02 .02 .05 .14 .41 1.00 1.88 4.15 5.92 1698 .01 .02 .10 .10 .30 .70 1.35 3.40 3.99

0576 .01 .02 .03 .06 .22 .77 1.56 5.51 7.58 1720 .10 .10 .10 .10 .20 .90 1.92 3.29 3.85

0580 .02 .03 .05 .12 .31 .86 1.88 4.19 5.89 1761 -- .01 .01 .07 .24 .57 1.01 2.57 --

0587 .01 .02 .04 .11 .38 1.10 1.81 4.52 6.00 1773 .03 .05 .10 .19 .50 1.10 2.19 4.20 5.30

0605 .02 .05 .16 .21 .57 1.03 1.92 3.40 6.42 1810 -- -- .10 .17 .39 .63 1.79 -- --

0639 .03 .04 .10 .10 .30 .81 1.80 3.73 4.70 1823 -- -- .06 .17 .83 1.58 2.17 -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 .02 .03 .05 .14 .41 1.04 2.07 3.61 4.00

0665 .02 .02 .05 .11 .36 .97 1.82 4.00 5.27 1875 -- -- .26 .40 1.27 1.95 2.78 -- --

0689 .02 .03 .06 .11 .30 .89 1.80 4.00 5.15 1876 -- -- .06 .14 .53 1.24 2.09 -- --

0690 .10 .10 .10 .10 .30 .80 1.50 3.10 4.92 1889 .01 .01 .01 .07 .27 .91 1.89 3.87 5.13

0691 .02 .02 .05 .12 .37 .90 1.78 3.40 4.32 1903 .10 .10 .10 .10 .30 .70 1.15 2.93 3.59

0708 .10 .10 .10 .17 .30 .80 1.60 4.11 4.62 1914 -- -- .09 .20 .62 1.25 3.05 -- --

0738 .02 .03 .06 .14 .40 .95 1.84 3.61 4.77 1920 .03 .04 .08 .17 .47 1.04 1.91 3.76 4.99

0776 .02 .03 .06 .10 .25 .70 1.36 3.00 3.50 1921 .03 .04 .10 .17 .46 1.10 2.06 4.31 5.35

0779 .10 .10 .10 .10 .20 .60 1.40 2.97 3.21 1937 .03 .03 .07 .19 .50 1.11 1.94 4.20 5.10

0784 .02 .02 .08 .10 .20 .60 1.30 3.00 3.72 1956 .02 .03 .08 .13 .40 1.10 2.00 4.13 5.30

0786 .01 .01 .02 .05 .17 .52 1.20 2.40 3.41 1970 -- -- .04 .07 .43 1.75 2.42 -- --

0917 .03 .03 .07 .18 .52 1.21 2.24 4.77 5.90 2014 .01 .01 .01 .03 .15 .66 1.68 3.74 4.84

0923 -- -- .20 .48 1.02 1.74 4.22 -- -- 2015 .01 .01 .01 .05 .19 .68 1.69 4.44 5.75

0926 .02 .03 .07 .11 .36 .93 1.80 3.42 4.25 2019 -- -- .07 .28 .86 1.51 4.60 -- --

0950 -- -- .05 .09 .17 .39 .86 -- -- 2024 .03 .03 .10 .16 .44 1.00 1.77 3.80 4.70

0996 -- -- .06 .14 .87 1.73 5.55 -- -- 2042 -- -- .01 .07 .20 .25 .52 -- --

1013 .10 .10 .10 .10 .20 .60 1.60 4.65 8.21 2043 -- .01 .02 .05 .16 .41 .80 1.68 --

1017 .02 .02 .07 .10 .30 .80 1.50 3.00 3.93 2048 .03 .03 .10 .10 .26 .80 1.70 3.40 5.06

1042 -- -- .33 .63 1.52 2.60 5.18 -- -- 2050 -- .01 .01 .04 .12 .64 1.58 5.27 --

1048 -- -- .20 .22 .60 1.01 1.91 -- -- 2051 -- .03 .05 .07 .28 .81 1.29 3.20 --

1053 .02 .03 .05 .10 .29 .84 1.53 3.57 4.13 2053 -- -- -- .07 .15 .41 -- -- --

1057 .02 .03 .05 .11 .30 .74 1.40 2.80 3.45 2073 .02 .03 .05 .12 .37 .94 1.75 4.14 5.52

1063 -- -- .11 .27 .90 1.55 5.11 -- -- 2082 .02 .02 .05 .10 .20 .54 1.10 2.60 3.21

1068 .03 .04 .10 .15 .40 .96 1.90 3.46 4.45 2086 .03 .04 .10 .12 .40 1.00 1.84 3.85 5.06

1080 .03 .03 .06 .13 .27 .50 1.08 2.45 2.91 2088 -- -- .10 .10 .85 1.50 2.05 -- --

1081 .02 .03 .06 .15 .42 .99 1.88 3.85 4.57 2090 .10 .10 .10 .20 .40 1.00 1.98 4.21 5.52

1133 -- -- .01 .01 .08 .51 .92 -- -- 2096 .03 .04 .10 .13 .40 .95 1.80 3.82 4.66

1136 .01 .01 .01 .04 .15 .57 1.57 3.70 5.24 2128 .02 .03 .07 .14 .44 1.07 1.90 4.05 5.09

1138 -- -- .07 .34 .89 1.40 3.29 -- -- 2131 .03 .05 .10 .10 .40 .90 1.65 3.40 4.22

1139 -- .02 .05 .15 .42 .99 2.55 3.77 -- 2142 -- -- .22 .40 1.00 2.09 2.81 -- --

Appendix 4–4.5. Empirical distribution of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
260 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 0.02 0.03 0.26 0.41 1.14 -- -- 3463 -- -- 0.04 0.10 0.34 1.00 2.20 -- --

2206 0.02 0.03 .06 .14 .45 1.10 2.18 3.93 6.52 3476 0.02 0.02 .05 .13 .37 .90 1.80 3.90 4.32

2238 .01 .01 .02 .04 .17 .52 1.22 2.50 2.82 3485 -- -- .10 .10 .49 1.82 4.92 -- --

2240 -- .01 .02 .04 .21 .52 1.27 2.20 -- 3507 .06 .09 .10 .10 .40 1.00 1.91 3.80 5.13

2242 .01 .01 .02 .08 .34 .91 1.72 3.46 3.99 3546 .02 .03 .10 .19 .47 1.14 2.12 4.30 5.30

2244 .01 .01 .04 .10 .38 .94 1.89 3.90 5.21 3547 .02 .03 .06 .14 .40 1.08 1.79 3.18 3.53

2247 -- -- .02 .06 .37 1.19 2.15 -- -- 3579 -- .05 .10 .16 .36 1.43 1.89 3.70 --

2309 .03 .04 .10 .25 .57 1.18 2.02 4.46 5.86 3642 .03 .03 .10 .15 .40 1.01 1.98 4.00 5.27

2312 .08 .10 .10 .20 .50 1.10 2.10 3.90 4.75 3646 .03 .03 .06 .14 .39 .94 1.70 3.87 4.98

2334 -- .03 .08 .24 .62 1.27 3.30 5.91 -- 3668 -- -- .34 .69 1.20 2.24 3.74 -- --

2336 .02 .03 .07 .18 .47 1.10 1.70 3.18 3.78 3673 -- -- .04 .10 .74 2.07 2.97 -- --

2354 -- -- .04 .10 .17 .72 1.24 -- -- 3686 .05 .07 .10 .10 .40 1.00 1.90 3.31 4.21

2355 -- -- .03 .07 .34 .90 2.66 -- -- 3691 .02 .03 .10 .10 .40 .91 1.80 3.50 4.69

2357 .01 .01 .01 .03 .13 .52 1.33 3.24 5.06 3734 -- -- .03 .18 1.14 3.53 4.82 -- --

2360 .01 .01 .01 .04 .16 .61 1.37 3.07 4.16 3771 .10 .10 .10 .10 .40 1.00 1.82 3.80 4.50

2361 .02 .02 .05 .10 .20 .68 1.44 3.20 11.14 3789 -- .01 .03 .07 .15 .36 .67 1.51 --

2394 .02 .02 .05 .13 .40 1.00 1.91 3.90 5.32 3826 .01 .03 .06 .17 .37 .94 1.61 3.34 4.42

2404 .02 .02 .06 .12 .37 .92 1.76 3.64 4.81 3831 .03 .03 .06 .16 .41 1.07 2.15 3.70 5.18

2415 .03 .04 .08 .19 .51 1.15 2.12 4.34 5.45 3841 .02 .02 .06 .15 .40 .99 1.74 4.96 5.63

2462 .03 .04 .09 .18 .48 1.10 2.05 3.90 4.87 3871 .02 .03 .05 .13 .35 .82 1.59 3.30 3.95

2528 -- .03 .06 .12 .29 .89 2.05 2.71 -- 3884 -- -- .06 .14 .30 1.86 3.50 -- --

2617 .02 .02 .05 .10 .28 .65 1.44 3.14 4.20 3941 -- .02 .05 .10 .65 1.45 2.17 5.54 --

2619 .02 .03 .05 .15 .34 .79 1.26 2.98 3.94 3963 -- -- -- .03 .08 .18 -- -- --

2621 .02 .03 .07 .11 .31 .73 1.50 2.93 3.67 4040 .03 .03 .07 .13 .38 .81 1.48 3.18 4.59

2675 .03 .05 .10 .12 .40 .90 1.90 4.27 5.47 4058 -- -- .08 .14 .56 1.28 3.58 -- --

2676 .10 .10 .10 .10 .30 1.00 1.90 3.60 4.52 4098 .03 .04 .10 .10 .20 .60 1.10 2.30 2.90

2679 .02 .02 .06 .10 .20 .70 1.65 3.70 5.01 4100 .02 .04 .05 .10 .31 .80 1.50 3.52 4.90

2715 .02 .03 .07 .14 .40 .90 1.66 3.46 4.37 4137 .10 .10 .10 .10 .40 1.00 1.70 3.60 4.40

2744 .03 .03 .08 .10 .30 .80 1.46 3.15 3.80 4191 .03 .04 .08 .10 .30 .83 1.80 3.78 5.29

2758 -- .02 .03 .05 .15 .56 1.62 4.41 -- 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- .01 .04 .16 .66 1.61 -- -- 4257 .04 .05 .10 .20 .50 1.17 2.20 4.41 5.59

2797 .01 .01 .01 .03 .11 .30 .65 1.55 1.98 4258 .10 .10 .10 .20 .50 1.10 2.05 4.19 7.07

2811 .02 .03 .08 .10 .30 .78 1.50 3.28 3.95 4278 .02 .02 .05 .13 .35 .96 1.83 3.63 4.52

2813 -- -- .06 .22 .42 .99 2.32 -- -- 4299 .03 .04 .06 .13 .27 .57 .89 1.24 1.49

2814 -- -- .01 .03 .07 .28 1.01 -- -- 4300 .01 .01 .02 .07 .29 .93 1.92 4.29 6.57

2815 .10 .10 .10 .10 .30 .70 1.40 3.26 4.57 4305 .01 .01 .02 .06 .30 .92 1.94 4.45 5.56

2818 .02 .02 .05 .12 .37 .81 1.52 3.85 4.96 4307 .01 .01 .02 .08 .35 .93 1.99 4.86 7.56

2986 .02 .04 .09 .20 .62 1.39 2.17 4.42 7.61 4309 .02 .02 .05 .13 .42 1.10 2.07 4.40 5.91

3005 .02 .03 .10 .12 .39 .90 1.60 3.44 4.35 4311 .02 .02 .06 .15 .44 1.18 2.20 4.55 5.71

3033 .02 .02 .04 .08 .15 .35 .75 1.63 2.00 4313 .03 .04 .10 .20 .45 1.20 2.55 5.02 8.24

3034 -- -- -- -- .16 -- -- -- -- 4319 -- .04 .10 .17 .40 .85 1.85 3.63 --

3047 -- -- .10 .13 .68 1.71 2.95 -- -- 4329 .02 .03 .07 .16 .45 1.08 2.11 4.65 5.99

3103 -- -- .12 .19 .29 1.10 2.74 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 .02 .03 .07 .16 .46 1.06 1.95 4.03 5.25 4375 .10 .10 .10 .10 .30 .90 1.80 4.15 5.64

3156 .04 .05 .10 .16 .46 1.17 2.20 5.99 9.29 4392 .02 .03 .05 .16 .50 1.20 2.24 5.99 7.26

3171 .03 .03 .07 .15 .41 1.00 1.88 3.79 4.92 4425 .03 .03 .09 .10 .21 .60 1.20 2.47 3.17

3189 .02 .03 .05 .10 .20 .50 1.00 2.54 3.40 4440 .02 .02 .05 .11 .34 .83 1.53 3.40 4.13

3260 .01 .02 .04 .10 .32 .85 1.81 3.33 4.10 4476 .04 .05 .10 .14 .40 .90 1.70 3.54 4.42

3267 -- .02 .03 .05 .19 .58 1.25 5.47 -- 4498 -- -- .02 .06 .17 .38 .60 -- --

3270 .04 .10 .10 .10 .30 .70 1.40 3.20 3.80 4517 .02 .02 .05 .13 .38 .94 1.80 3.52 4.06

3272 -- -- .02 .03 .13 .22 .37 -- -- 4520 .10 .10 .10 .10 .40 .90 1.70 3.50 4.30

3277 -- -- .02 .03 .13 .23 .70 -- -- 4525 -- -- .04 .07 .28 .80 5.54 -- --

3278 .02 .03 .06 .10 .25 .69 1.30 2.65 3.38 4563 -- -- .04 .06 .40 .64 1.92 -- --

3280 .01 .01 .03 .05 .16 .45 .98 1.93 2.65 4570 .02 .03 .08 .10 .30 .76 1.50 3.01 4.35

3281 -- -- .04 .12 .28 .52 1.00 -- -- 4577 .03 .04 .10 .20 .50 1.10 2.00 4.10 5.88

3283 .01 .01 .02 .08 .30 .79 1.79 3.80 4.84 4591 .02 .03 .06 .14 .42 1.00 1.90 3.85 4.91

3284 .01 .02 .10 .11 .40 .93 1.90 3.53 4.30 4670 .02 .03 .07 .10 .30 .79 1.50 3.07 3.62

3285 .03 .08 .10 .10 .40 1.00 1.90 3.71 4.50 4671 .01 .01 .03 .06 .27 .71 1.21 3.12 3.35

3329 .02 .02 .05 .10 .30 .81 1.75 3.67 5.11 4679 .03 .04 .10 .10 .36 .90 1.86 4.00 5.31

3335 .02 .03 .10 .20 .47 1.29 2.19 4.86 9.41 4696 -- -- .05 .09 .47 .81 1.14 -- --

3370 .02 .03 .06 .15 .47 1.06 2.00 4.00 5.02 4703 .02 .02 .05 .12 .24 .75 1.41 3.06 3.48

3410 .04 .05 .10 .10 .30 .70 1.40 2.86 3.59 4704 .02 .03 .06 .18 .48 1.24 2.79 5.00 7.09

3415 .02 .03 .10 .11 .40 .90 1.80 3.72 4.97 4731 -- .01 .01 .05 .18 .64 1.24 4.64 --

3430 .01 .01 .02 .07 .29 .86 1.90 4.31 6.46 4792 .10 .10 .10 .10 .40 .93 1.70 3.30 4.20

3431 .01 .01 .02 .06 .25 .81 1.67 5.41 10.33 4819 .10 .10 .10 .20 .50 1.10 2.00 3.94 4.26

3441 -- -- .05 .19 .41 1.04 2.51 -- -- 4852 -- -- .14 .37 .78 1.14 2.87 -- --

3442 .02 .03 .05 .10 .25 .52 1.30 2.28 2.78 4866 .03 .04 .10 .15 .44 1.00 1.86 3.61 4.37

3446 .03 .04 .06 .12 .30 .70 1.20 2.51 3.17 4876 .10 .10 .10 .10 .40 1.20 2.88 5.32 7.01

3460 -- -- .04 .10 .82 1.35 1.90 -- -- 4878 .02 .03 .08 .18 .50 1.25 2.42 5.05 6.20

3462 .05 .05 .09 .15 .36 .86 1.27 2.42 4.53 4880 .02 .03 .06 .10 .27 .65 1.30 2.72 3.40

Appendix 4–4.5. Empirical distribution of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 261

4920 0.03 0.03 0.09 0.10 0.30 0.90 1.70 3.73 4.80 5957 0.03 0.04 0.10 0.10 0.40 0.90 1.70 3.60 4.81

4934 -- -- -- .07 .14 .66 -- -- -- 5958 .01 .01 .05 .13 .37 1.10 1.90 2.79 3.45

4972 .03 .03 .10 .11 .39 .86 1.64 3.50 4.40 5973 -- .02 .03 .05 .18 .66 1.75 3.88 --

4973 .03 .05 .10 .25 .60 1.20 2.12 3.76 4.39 5996 .03 .04 .10 .10 .37 .90 1.70 3.50 4.40

4974 .02 .03 .05 .10 .28 .69 1.31 3.05 3.85 6017 .01 .01 .03 .06 .21 .65 1.30 2.66 2.96

4975 .10 .10 .10 .20 .50 1.20 2.10 4.20 5.10 6024 .02 .03 .06 .16 .60 1.44 2.55 6.17 6.60

4978 .02 .02 .04 .10 .35 .93 2.00 4.16 5.33 6050 -- -- .15 .24 .40 1.03 1.73 -- --

4979 -- -- .11 .35 .65 2.25 3.29 -- -- 6104 .02 .03 .05 .10 .23 .57 1.11 2.56 3.31

4982 .02 .03 .06 .12 .33 .80 1.54 2.92 3.67 6108 .03 .04 .10 .20 .50 1.20 2.12 4.51 5.51

5018 .02 .03 .07 .15 .43 .97 1.66 2.87 3.99 6136 .03 .04 .10 .10 .22 .60 1.15 2.30 3.05

5048 .02 .03 .10 .10 .20 .70 1.30 2.95 3.73 6166 -- .03 .05 .09 .21 .60 1.25 2.40 --

5049 -- .10 .10 .10 .25 .50 .92 4.45 -- 6176 .02 .02 .05 .15 .49 .98 2.37 4.80 6.73

5056 -- -- -- .20 .37 .69 -- -- -- 6177 .03 .05 .10 .20 .50 1.11 2.10 4.45 5.80

5057 .01 .01 .02 .04 .14 .44 1.20 2.90 3.40 6210 .03 .04 .10 .12 .40 1.05 1.99 4.14 4.70

5060 .01 .01 .02 .06 .22 .77 1.92 5.90 6.74 6211 .01 .01 .05 .12 .45 1.12 2.25 4.26 4.92

5081 .02 .03 .06 .17 .52 1.10 2.00 3.86 4.25 6270 .10 .10 .10 .20 .50 1.20 2.20 4.40 5.44

5094 .02 .03 .10 .15 .40 1.00 1.90 3.97 4.64 6275 -- -- -- -- .00 -- -- -- --

5113 .02 .03 .08 .10 .30 .80 1.80 4.16 5.38 6276 -- -- .06 .18 1.08 1.82 2.80 -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 .02 .03 .07 .16 .44 1.04 1.90 3.65 4.61

5123 -- -- .07 .16 .27 .89 2.54 -- -- 6434 -- -- .09 .13 .45 1.00 1.73 -- --

5192 .02 .03 .09 .15 .40 1.05 1.94 3.94 5.23 6504 .02 .03 .09 .10 .25 .66 1.30 2.91 3.45

5193 .02 .03 .07 .10 .38 1.00 1.87 3.79 4.90 6558 -- -- .05 .06 .49 .99 1.88 -- --

5224 .01 .02 .05 .14 .50 1.14 2.27 5.29 8.28 6615 .06 .10 .10 .10 .30 .70 1.50 3.64 5.02

5228 .02 .02 .05 .10 .40 1.03 1.82 3.71 4.32 6660 -- .03 .05 .17 .40 .96 2.17 4.96 --

5235 -- -- .04 .05 .54 1.01 1.94 -- -- 6663 -- .02 .10 .16 .40 1.12 1.75 4.51 --

5247 .02 .03 .10 .10 .30 .70 1.30 2.52 3.18 6734 .01 .02 .05 .10 .28 .71 1.30 3.00 3.47

5258 .02 .03 .07 .15 .40 .94 1.89 3.89 4.70 6736 .03 .03 .10 .10 .26 .70 1.31 3.19 3.94

5303 .02 .03 .05 .10 .30 .89 1.67 3.87 5.18 6740 -- -- .09 .26 .94 3.39 4.10 -- --

5312 .04 .05 .10 .10 .30 .80 1.60 3.29 4.99 6750 .01 .01 .01 .05 .29 1.19 2.36 6.41 9.71

5341 -- -- .10 .22 .47 1.61 5.49 -- -- 6757 .01 .02 .06 .13 .41 1.07 1.96 4.00 5.06

5342 -- -- -- -- .00 -- -- -- -- 6775 .01 .01 .04 .10 .26 .67 1.25 2.72 3.41

5348 .03 .05 .10 .20 .50 1.20 2.20 4.00 4.80 6776 .02 .03 .10 .10 .30 .66 1.23 2.70 3.40

5358 .02 .02 .05 .10 .30 .78 1.53 2.97 3.69 6788 .02 .03 .06 .18 .50 1.06 1.93 4.13 5.07

5398 .03 .03 .08 .15 .45 1.06 2.01 4.29 5.83 6792 .02 .02 .07 .10 .20 .50 1.06 2.12 2.70

5410 .02 .03 .08 .10 .28 .64 1.20 3.10 4.00 6794 -- -- .16 .56 1.38 3.15 5.07 -- --

5411 .01 .01 .02 .05 .17 .54 1.14 2.76 3.45 6834 .10 .10 .10 .20 .50 1.20 2.20 4.40 5.20

5424 .01 .01 .02 .07 .39 1.13 2.41 4.24 7.50 6893 .02 .03 .08 .10 .20 .42 .85 2.10 2.70

5429 .02 .02 .04 .10 .31 .92 1.84 3.94 4.79 6935 .03 .04 .10 .10 .27 .60 1.30 2.87 3.38

5431 -- -- .14 .35 .70 1.40 3.03 -- -- 6981 .02 .03 .07 .16 .45 .97 1.85 5.48 5.72

5461 .02 .03 .06 .16 .46 1.11 2.05 4.27 5.79 7020 .02 .02 .04 .13 .38 1.07 2.07 4.15 8.42

5463 .10 .10 .10 .10 .50 1.10 2.00 4.30 5.70 7060 .03 .05 .10 .10 .30 .80 1.53 2.93 3.53

5471 -- -- .03 .06 .10 .41 .82 -- -- 7066 .03 .03 .10 .18 .50 1.13 2.14 4.09 5.09

5477 -- -- .07 .15 .40 .61 3.50 -- -- 7074 .02 .02 .06 .10 .23 .60 1.18 2.82 3.82

5528 .03 .03 .08 .18 .50 1.07 2.02 3.81 4.47 7097 -- .02 .08 .17 .39 .89 1.89 3.76 --

5579 -- -- -- -- .55 -- -- -- -- 7116 .02 .02 .05 .11 .28 .69 1.28 2.64 3.87

5580 -- -- .08 .30 .49 1.23 1.89 -- -- 7140 .02 .02 .05 .10 .32 .98 2.17 4.99 6.50

5589 .01 .01 .02 .06 .20 .49 .97 1.52 1.67 7173 .01 .01 .02 .07 .38 1.10 2.49 5.98 7.56

5590 .02 .02 .04 .08 .20 .47 1.06 2.23 3.23 7174 .01 .01 .02 .08 .35 1.04 2.18 5.20 7.13

5591 .02 .02 .05 .11 .26 .55 .97 1.85 2.73 7213 .02 .02 .06 .16 .42 1.00 1.99 3.98 4.99

5592 .02 .02 .04 .08 .20 .47 .99 2.11 2.45 7243 .03 .04 .10 .10 .30 .81 1.57 3.02 4.09

5594 .02 .03 .04 .08 .20 .47 .80 1.92 2.24 7262 -- .01 .01 .03 .12 .34 .60 1.47 --

5595 -- -- -- -- .03 -- -- -- -- 7274 .04 .05 .10 .20 .42 .95 1.81 3.80 5.46

5596 .10 .10 .10 .10 .20 .50 1.10 2.60 3.37 7300 .02 .03 .05 .13 .37 .88 1.63 3.26 4.60

5600 .02 .02 .05 .10 .23 .53 1.01 2.59 3.71 7311 -- -- .10 .20 .30 1.11 1.91 -- --

5618 -- -- .07 .15 .36 1.21 2.38 -- -- 7363 -- -- .07 .15 .94 1.67 2.33 -- --

5650 -- -- .12 .27 .45 .76 1.78 -- -- 7422 .02 .03 .07 .10 .33 .90 1.81 4.00 4.92

5656 .10 .10 .10 .10 .30 .70 1.40 3.00 3.60 7431 .03 .03 .06 .10 .23 .60 1.22 2.67 3.37

5658 .02 .02 .05 .10 .26 .65 1.33 3.05 4.59 7481 .02 .02 .05 .10 .20 .45 .96 2.56 3.37

5661 .10 .10 .10 .10 .30 .72 1.80 6.55 8.60 7497 .10 .10 .10 .10 .40 1.00 1.72 3.70 5.09

5666 -- -- .05 .09 .30 .86 1.59 -- -- 7498 .08 .10 .10 .10 .40 1.05 1.70 4.24 6.66

5695 .03 .04 .08 .18 .48 1.03 1.84 3.83 5.07 7499 .05 .07 .10 .10 .36 .90 1.70 3.50 4.21

5742 -- -- .04 .07 .20 .33 1.59 -- -- 7531 .03 .03 .06 .13 .40 1.08 1.98 3.67 4.16

5766 -- -- .12 .30 .54 1.99 2.80 -- -- 7534 .02 .03 .05 .11 .35 .93 1.70 3.52 5.83

5770 .02 .03 .07 .10 .30 .70 1.40 2.96 4.00 7556 .03 .04 .10 .10 .37 .90 1.80 3.70 5.12

5775 -- -- .05 .05 .15 .73 .97 -- -- 7594 .02 .03 .07 .16 .48 1.10 2.10 4.33 5.70

5779 -- -- .12 .19 .49 1.12 2.53 -- -- 7596 .01 .02 .04 .10 .44 1.27 2.08 3.46 4.29

5840 .02 .03 .05 .11 .36 .90 1.91 3.93 4.82 7608 .01 .01 .03 .10 .31 .89 1.79 3.39 4.96

5890 .01 .01 .02 .05 .16 .47 1.07 2.49 3.06 7622 -- -- .01 .01 .06 .34 .76 -- --

5891 .02 .03 .06 .10 .25 .61 1.03 1.90 2.38 7700 .02 .02 .05 .13 .44 1.09 2.08 4.20 5.03

5897 .10 .10 .10 .10 .40 1.00 1.90 3.80 4.60 7706 .02 .03 .08 .10 .30 .72 1.52 3.24 4.39

Appendix 4–4.5. Empirical distribution of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
262 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 -- 0.03 0.08 0.15 0.45 0.92 2.53 4.97 -- 8910 -- -- 0.04 0.10 0.42 1.41 2.37 -- --

7745 0.01 .02 .06 .15 .49 1.16 2.14 5.12 7.17 8911 0.01 0.01 .03 .09 .32 .83 1.66 3.49 4.47

7922 .01 .01 .02 .06 .16 .34 .75 1.41 2.00 8924 .02 .03 .05 .10 .22 .47 .91 1.66 1.86

7936 .03 .04 .10 .20 .50 1.20 2.15 4.36 6.25 8929 -- -- .04 .12 .83 1.60 6.25 -- --

7943 .01 .01 .02 .05 .19 .58 1.27 2.68 3.54 8942 .04 .06 .10 .20 .50 1.14 2.20 4.70 5.50

7944 -- .01 .01 .04 .27 .74 1.61 3.14 -- 8944 .01 .02 .04 .12 .38 .97 1.92 4.01 5.22

7945 .01 .01 .01 .05 .21 .72 1.56 3.83 5.07 8996 .02 .02 .05 .12 .37 .98 1.89 3.99 5.31

7947 .05 .05 .10 .10 .40 1.02 1.97 5.45 6.03 9014 -- -- .14 .38 .74 1.40 2.42 -- --

7948 .02 .02 .04 .10 .30 .82 1.83 4.04 4.55 9037 .02 .02 .05 .09 .20 .43 .91 2.05 2.67

7951 .02 .04 .07 .19 .45 1.11 1.93 3.58 4.50 9106 .02 .02 .03 .06 .14 .42 .83 2.09 5.10

7953 -- .02 .05 .09 .23 .68 1.75 3.89 -- 9107 -- -- .05 .08 .20 .79 .90 -- --

7981 .02 .02 .05 .10 .29 .84 1.99 3.69 4.01 9129 -- .02 .04 .05 .16 .48 1.36 3.53 --

7990 -- .01 .03 .07 .20 .65 2.12 4.58 -- 9163 .02 .03 .07 .11 .35 .80 1.70 3.30 4.19

7992 -- -- .09 .12 .50 1.77 2.33 -- -- 9213 .01 .01 .02 .09 .34 .88 1.72 4.33 5.10

7997 -- .02 .04 .10 .28 .67 1.60 4.00 -- 9214 -- -- .14 .29 .43 1.63 4.03 -- --

7999 -- -- .02 .04 .18 .52 1.38 -- -- 9222 .02 .02 .04 .12 .32 .98 1.83 4.35 4.89

8022 -- .05 .05 .07 .21 .92 1.58 2.86 -- 9248 .02 .03 .06 .10 .28 .82 1.33 2.82 3.24

8023 .03 .04 .08 .10 .28 .70 1.36 2.85 3.74 9266 -- .02 .05 .17 .28 1.00 1.56 2.93 --

8047 .02 .03 .08 .12 .40 .95 1.75 3.52 4.38 9270 .03 .04 .10 .10 .20 .50 1.00 2.20 2.93

8060 .01 .02 .03 .06 .18 .71 1.93 3.51 3.68 9295 -- .01 .02 .04 .12 .30 .68 1.57 --

8062 -- -- .01 .04 .31 1.04 3.21 -- -- 9304 -- -- -- -- .24 -- -- -- --

8068 -- -- .02 .05 .14 .40 1.23 -- -- 9307 .03 .04 .10 .15 .40 .80 1.75 3.22 3.52

8081 .02 .03 .07 .10 .30 .85 1.70 3.87 5.60 9328 .01 .02 .05 .10 .29 .68 1.27 2.92 3.12

8089 -- -- .03 .10 .30 .80 1.62 -- -- 9329 -- -- .05 .10 .65 1.09 2.10 -- --

8221 -- -- .10 .27 .62 1.13 2.31 -- -- 9345 -- -- -- -- .75 -- -- -- --

8252 .02 .03 .07 .10 .30 .70 1.30 2.60 3.54 9363 .01 .01 .02 .05 .21 .70 1.52 3.67 5.18

8265 .02 .03 .05 .14 .41 1.08 2.16 4.97 7.14 9364 .01 .01 .02 .05 .22 .78 1.73 3.96 5.92

8289 -- -- .05 .15 .45 .93 1.13 -- -- 9365 -- -- .07 .10 .25 .45 1.76 -- --

8305 .02 .03 .05 .10 .20 .40 .84 1.90 2.49 9371 .04 .04 .07 .12 .38 1.17 2.09 3.01 3.56

8335 .03 .03 .07 .18 .54 1.20 2.12 4.25 4.90 9417 .02 .02 .05 .11 .37 1.00 1.85 3.33 4.31

8400 .02 .02 .05 .10 .25 .50 1.08 2.97 3.68 9419 .01 .01 .02 .07 .29 .85 1.66 3.27 4.25

8445 .02 .03 .05 .13 .39 1.03 1.93 4.12 5.40 9435 -- .02 .06 .12 .36 .72 1.21 4.39 --

8446 .02 .03 .10 .10 .38 .94 1.80 3.50 4.80 9491 .03 .03 .08 .13 .40 1.04 2.00 3.74 4.80

8451 .02 .02 .05 .10 .25 .70 1.34 3.41 3.99 9499 .03 .04 .10 .10 .30 .80 1.50 2.82 3.40

8531 .02 .03 .07 .15 .40 1.00 1.77 3.40 4.05 9522 -- -- -- .21 .83 3.46 -- -- --

8541 -- .01 .05 .14 .41 .98 1.88 3.93 -- 9527 .03 .04 .10 .10 .28 .60 1.30 2.69 3.60

8544 .04 .05 .10 .11 .32 1.01 1.90 5.19 6.60 9532 .02 .03 .09 .10 .40 .90 1.70 3.73 4.98

8545 -- -- .03 .08 .38 .57 .97 -- -- 9544 -- -- -- .10 .24 4.34 -- -- --

8563 .10 .10 .10 .10 .40 1.00 1.90 4.30 4.85 9565 .02 .03 .09 .10 .30 .70 1.53 3.49 4.32

8566 .02 .02 .05 .10 .27 .78 1.48 2.73 3.45 9570 .10 .10 .10 .10 .30 .70 1.60 2.75 3.45

8583 .10 .10 .10 .10 .30 .90 1.50 2.99 4.08 9574 -- -- .10 .10 .40 .90 2.20 -- --

8584 .03 .04 .10 .11 .37 .97 1.78 3.30 4.39 9588 .02 .02 .06 .10 .23 .72 1.70 4.05 4.86

8623 .05 .06 .10 .17 .40 1.00 1.80 3.34 4.44 9665 .03 .04 .10 .15 .44 1.06 1.90 4.30 5.36

8625 .02 .03 .06 .12 .37 .93 1.71 3.49 4.38 9715 .02 .03 .09 .11 .40 .95 1.72 3.54 4.68

8630 .02 .03 .07 .10 .30 .70 1.45 2.53 2.87 9729 .01 .01 .02 .07 .28 .80 1.52 3.38 4.21

8631 .02 .04 .06 .11 .31 .72 1.60 3.33 4.13 9772 .01 .02 .04 .10 .31 .89 1.85 5.00 6.13

8646 .02 .03 .06 .12 .37 .93 1.72 3.31 4.30 9814 -- -- .04 .10 .36 .92 1.82 -- --

8647 .03 .04 .10 .10 .25 .62 1.20 2.67 3.53 9815 .03 .03 .07 .15 .38 1.01 1.95 4.11 5.88

8677 .01 .03 .10 .17 .37 .98 1.56 3.96 5.27 9816 -- .04 .05 .10 .28 .81 2.11 4.51 --

8696 -- -- .03 .18 .42 1.44 3.18 -- -- 9817 .04 .06 .10 .10 .40 .81 1.60 3.40 4.40

8743 .02 .04 .08 .15 .49 1.10 2.10 4.49 5.42 9829 .02 .02 .05 .10 .20 .50 1.04 2.29 2.92

8761 .02 .04 .10 .10 .24 .60 1.30 2.49 3.51 9830 .01 .01 .03 .07 .13 .42 .92 1.88 2.42

8778 .03 .05 .10 .19 .43 1.01 2.00 3.80 4.60 9858 .02 .02 .05 .11 .28 .65 1.33 2.59 3.28

8845 .03 .04 .09 .10 .33 .96 1.99 4.20 5.56 9893 .02 .03 .06 .10 .35 .82 1.70 3.30 4.40

8859 .02 .03 .08 .19 .51 1.15 2.02 4.10 4.83 9916 .03 .05 .10 .20 .50 1.20 2.18 4.00 4.90

8898 .03 .03 .08 .16 .45 1.03 2.09 4.02 5.61 9976 .02 .03 .06 .10 .30 .79 1.50 3.20 4.44

8908 -- -- .06 .12 .46 1.05 1.71 -- --

Appendix 4–4.5. Empirical distribution of storm depth defined by 24-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 263

Appendix 4–4.6. Empirical distribution of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- -- 0.04 0.13 0.66 -- -- -- 1154 0.01 0.01 0.03 0.12 0.44 1.29 2.68 5.06 6.11

0016 0.01 0.01 0.02 .08 .32 .86 1.76 3.69 4.53 1165 .02 .02 .05 .11 .35 .93 1.75 3.04 3.95

0050 .02 .03 .06 .16 .49 1.14 1.90 3.40 4.76 1185 .02 .02 .05 .10 .27 .68 1.22 2.47 3.02

0054 -- -- .07 .15 .34 .55 1.36 -- -- 1186 -- .01 .05 .13 .46 1.02 2.57 5.86 --

0120 -- -- .04 .09 .76 2.80 6.80 -- -- 1188 -- -- -- .21 .64 .94 -- -- --

0145 .01 .01 .02 .08 .24 .80 1.82 3.72 14.63 1245 -- -- .02 .13 .62 2.15 8.49 -- --

0146 -- -- .09 .17 .51 1.03 1.47 -- -- 1246 .10 .10 .10 .20 .60 1.20 2.30 4.60 5.61

0174 .03 .05 .10 .10 .30 .70 1.40 3.14 3.80 1267 .01 .02 .04 .11 .28 .76 1.49 3.18 5.97

0178 -- -- .03 .05 .27 1.18 2.08 -- -- 1304 .02 .03 .05 .13 .45 1.00 2.02 4.66 7.14

0179 .02 .02 .05 .08 .24 .58 1.23 3.24 3.64 1325 .03 .03 .06 .15 .48 1.30 2.47 5.19 7.12

0202 .10 .10 .10 .20 .50 1.10 2.00 3.84 4.48 1429 .03 .03 .07 .15 .44 1.08 2.04 4.71 5.80

0206 .04 .06 .10 .20 .55 1.20 2.29 4.10 5.09 1431 .02 .03 .07 .16 .52 1.22 2.25 4.63 5.45

0208 -- -- -- -- .19 -- -- -- -- 1432 .02 .02 .05 .16 .53 1.21 2.27 4.55 6.18

0211 .01 .01 .02 .06 .22 .66 1.44 3.08 3.96 1433 .02 .03 .07 .19 .50 1.20 2.36 4.79 5.75

0244 -- .02 .05 .19 .56 1.40 2.25 3.90 -- 1434 .02 .03 .07 .15 .50 1.22 2.28 4.15 5.36

0248 .02 .03 .08 .10 .27 .69 1.32 2.87 3.70 1435 .02 .03 .06 .15 .54 1.23 2.27 4.49 5.15

0262 .02 .03 .08 .20 .51 1.25 2.23 4.82 5.91 1436 .03 .03 .07 .18 .52 1.24 2.34 4.53 5.61

0271 -- -- .04 .14 1.27 3.29 4.78 -- -- 1437 -- -- .02 .04 .11 .79 2.02 -- --

0380 .02 .02 .06 .16 .42 1.07 2.32 5.92 7.28 1438 .02 .03 .06 .15 .51 1.16 2.22 4.49 5.29

0394 -- -- -- .21 .40 1.79 -- -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- .06 .47 .88 5.34 10.34 -- -- 1492 .03 .05 .10 .11 .40 1.00 1.93 3.76 4.96

0427 -- -- .10 .10 .50 1.25 2.82 -- -- 1500 -- -- .05 .18 .54 1.77 5.98 -- --

0428 .01 .01 .02 .08 .36 1.02 2.11 4.65 5.64 1528 .03 .04 .10 .10 .34 .90 1.90 4.00 5.44

0429 .01 .01 .02 .10 .45 1.22 2.66 5.14 9.75 1541 -- -- .10 .20 .70 1.35 3.60 -- --

0463 -- .04 .08 .17 .35 .74 1.28 4.84 -- 1569 .02 .02 .05 .13 .39 1.26 2.12 7.00 9.75

0493 -- -- .42 .66 1.34 1.68 2.91 -- -- 1632 -- -- -- .28 .73 1.03 -- -- --

0495 .02 .02 .06 .12 .28 .66 1.23 2.19 2.84 1641 .02 .03 .07 .15 .40 .80 1.68 2.98 4.02

0496 -- -- .04 .13 .17 .44 .78 -- -- 1646 .04 .05 .10 .10 .30 .78 1.49 3.10 3.87

0498 -- -- -- .14 .26 .29 -- -- -- 1663 -- -- .10 .20 .60 1.80 4.86 -- --

0509 .03 .04 .10 .18 .49 1.10 2.11 4.76 6.37 1671 .03 .05 .10 .15 .50 1.20 2.30 4.80 5.82

0518 .02 .03 .10 .20 .53 1.20 2.40 4.82 6.25 1680 .03 .04 .07 .17 .44 1.08 2.02 3.76 5.25

0521 -- -- .06 .14 .33 .61 2.33 -- -- 1694 .10 .10 .10 .10 .30 .90 2.00 3.66 3.79

0556 -- .04 .09 .15 .34 1.05 1.92 3.84 -- 1696 .02 .02 .05 .12 .35 .85 1.66 3.15 3.72

0569 .02 .04 .10 .20 .50 1.35 2.80 6.03 8.01 1697 -- .03 .05 .10 .27 .73 1.82 2.88 --

0572 .02 .03 .06 .15 .49 1.22 2.22 4.89 6.90 1698 .01 .02 .10 .10 .40 .89 1.70 3.69 4.61

0576 -- .02 .03 .06 .28 1.08 1.94 7.70 -- 1720 .10 .10 .10 .10 .30 1.00 2.24 4.07 5.01

0580 .02 .04 .05 .15 .38 1.02 2.17 4.99 6.25 1761 -- .01 .01 .08 .28 .84 1.54 2.97 --

0587 .01 .02 .05 .15 .51 1.33 2.58 5.49 7.56 1773 .04 .05 .10 .20 .61 1.40 2.68 5.15 6.42

0605 -- .05 .20 .30 .69 1.32 2.33 4.71 -- 1810 -- -- .15 .29 .54 1.41 2.62 -- --

0639 .04 .04 .10 .10 .40 1.10 2.25 4.30 5.43 1823 -- -- .05 .20 .56 3.54 5.55 -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 .02 .03 .06 .15 .51 1.27 2.28 4.42 6.75

0665 .02 .02 .05 .14 .46 1.18 2.18 4.76 5.92 1875 -- -- .33 .46 1.31 2.46 3.56 -- --

0689 .02 .03 .07 .13 .37 1.05 2.03 4.45 7.41 1876 -- -- .10 .21 .56 1.53 2.25 -- --

0690 .10 .10 .10 .10 .40 1.00 1.90 3.38 6.08 1889 .01 .01 .03 .10 .46 1.14 2.32 5.58 7.97

0691 .02 .02 .06 .15 .47 1.10 2.09 4.19 5.55 1903 .10 .10 .10 .10 .40 .90 1.50 3.36 4.08

0708 -- .10 .10 .20 .45 1.30 2.17 4.57 -- 1914 -- -- .18 .36 1.06 1.93 6.25 -- --

0738 .02 .03 .08 .17 .52 1.16 2.19 4.42 5.58 1920 .03 .04 .10 .20 .56 1.23 2.13 4.37 5.03

0776 .02 .03 .06 .10 .30 .80 1.59 3.45 3.94 1921 .03 .05 .10 .20 .60 1.31 2.59 4.98 6.21

0779 .10 .10 .10 .10 .30 .70 1.90 3.19 4.06 1937 .03 .04 .09 .24 .62 1.29 2.40 4.66 5.65

0784 .02 .03 .10 .10 .30 .80 1.60 3.30 4.12 1956 .02 .03 .10 .20 .58 1.43 2.50 5.02 6.43

0786 .01 .01 .02 .07 .23 .64 1.36 2.66 3.57 1970 -- -- .03 .07 .14 4.08 15.62 -- --

0917 .03 .04 .09 .25 .70 1.50 2.83 5.85 6.97 2014 .01 .01 .01 .05 .26 .91 2.22 4.69 5.67

0923 -- -- .11 .41 1.11 6.58 9.37 -- -- 2015 .01 .01 .02 .06 .27 .90 2.13 5.47 7.61

0926 .02 .03 .08 .16 .45 1.10 2.20 4.25 5.52 2019 -- -- .04 .23 .96 4.62 7.54 -- --

0950 -- -- .04 .09 .18 .57 1.19 -- -- 2024 .03 .04 .10 .20 .52 1.20 2.10 4.15 5.35

0996 -- -- -- .17 2.00 5.62 -- -- -- 2042 -- -- -- .06 .20 .30 -- -- --

1013 .10 .10 .10 .10 .30 .70 1.80 4.54 11.13 2043 -- .01 .02 .09 .20 .44 .81 2.51 --

1017 .02 .03 .08 .11 .40 .97 1.80 3.60 5.06 2048 .03 .03 .10 .10 .34 1.00 2.02 4.26 5.68

1042 -- -- -- .70 1.89 5.00 -- -- -- 2050 -- .01 .01 .04 .12 .68 1.58 5.38 --

1048 -- -- .10 .38 .75 1.02 6.39 -- -- 2051 -- .03 .05 .07 .29 .86 1.98 3.38 --

1053 .03 .03 .05 .13 .36 1.04 1.87 3.71 4.39 2053 -- -- -- .08 .18 .70 -- -- --

1057 .02 .03 .05 .12 .35 .87 1.67 3.37 3.96 2073 .02 .03 .07 .17 .48 1.11 2.03 4.98 6.36

1063 -- -- .05 .18 1.79 3.83 6.59 -- -- 2082 .02 .02 .06 .10 .28 .60 1.30 2.82 3.69

1068 .03 .04 .10 .20 .50 1.20 2.20 4.29 5.15 2086 .03 .04 .10 .19 .50 1.20 2.25 4.69 5.93

1080 .02 .03 .05 .15 .34 .75 1.19 3.01 4.16 2088 -- -- .10 .20 1.05 1.57 2.35 -- --

1081 .02 .03 .08 .19 .51 1.13 2.24 4.60 6.03 2090 .10 .10 .10 .20 .60 1.20 2.20 4.47 6.40

1133 -- -- .01 .02 .14 .58 1.08 -- -- 2096 .03 .04 .10 .20 .50 1.13 2.19 4.65 5.42

1136 .01 .01 .01 .05 .22 .80 2.02 4.59 6.14 2128 .02 .04 .07 .14 .53 1.26 2.39 4.38 5.28

1138 -- -- -- .53 1.26 2.37 -- -- -- 2131 .03 .05 .10 .20 .50 1.10 2.00 3.90 4.85

1139 -- .02 .05 .17 .50 1.73 2.91 5.40 -- 2142 -- -- -- 1.44 2.31 3.27 -- -- --

Appendix 4–4.6. Empirical distribution of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
264 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 0.02 0.08 0.29 0.88 2.65 -- -- 3463 -- -- 0.04 0.10 0.34 1.02 2.15 -- --

2206 0.03 0.03 .06 .17 .55 1.48 2.59 5.92 7.94 3476 0.02 0.02 .06 .15 .45 1.06 2.14 4.10 6.23

2238 .01 .01 .02 .05 .20 .61 1.56 2.72 3.32 3485 -- -- .09 .10 .46 2.23 6.21 -- --

2240 -- .01 .02 .09 .31 .79 1.78 2.81 -- 3507 .05 .07 .10 .20 .50 1.30 2.50 5.00 5.60

2242 .01 .01 .03 .12 .47 1.11 2.02 3.98 5.18 3546 .03 .03 .10 .20 .60 1.40 2.74 5.01 6.47

2244 .01 .01 .05 .15 .50 1.20 2.30 4.61 6.19 3547 .02 .03 .07 .17 .50 1.32 2.03 3.38 5.73

2247 -- -- .03 .17 .47 1.34 3.04 -- -- 3579 -- .05 .11 .23 .60 1.61 2.29 3.76 --

2309 .05 .05 .13 .30 .72 1.44 2.42 5.64 7.40 3642 .03 .04 .10 .20 .52 1.25 2.30 4.68 5.62

2312 .10 .10 .10 .30 .60 1.30 2.48 4.70 5.40 3646 .03 .03 .07 .17 .47 1.10 2.00 4.39 5.66

2334 -- -- .07 .31 .89 1.78 4.00 -- -- 3668 -- -- -- 1.14 2.44 3.20 -- -- --

2336 .02 .04 .10 .20 .52 1.30 2.25 3.73 3.97 3673 -- -- .04 .09 .97 3.12 9.65 -- --

2354 -- -- .04 .10 .24 .85 1.47 -- -- 3686 .05 .08 .10 .20 .59 1.26 2.27 4.16 5.96

2355 -- -- .04 .10 .47 1.02 3.02 -- -- 3691 .02 .04 .10 .20 .50 1.14 2.20 4.30 5.40

2357 .01 .01 .01 .04 .20 .76 1.66 4.22 5.49 3734 -- -- .03 .12 1.43 4.66 16.03 -- --

2360 .01 .01 .02 .05 .21 .73 1.59 3.71 4.83 3771 .10 .10 .10 .20 .50 1.30 2.40 4.50 5.18

2361 .02 .02 .05 .10 .29 .70 1.64 3.37 17.21 3789 -- .01 .04 .07 .19 .45 .74 2.27 --

2394 .02 .03 .07 .17 .50 1.26 2.37 4.75 5.72 3826 .01 .03 .10 .22 .47 1.02 1.74 4.17 5.56

2404 .02 .03 .07 .16 .46 1.12 2.15 4.38 5.62 3831 .03 .04 .06 .18 .51 1.40 2.45 3.98 5.65

2415 .03 .04 .10 .22 .61 1.40 2.66 5.15 6.24 3841 .02 .03 .10 .20 .60 1.23 2.29 5.07 5.82

2462 .04 .05 .10 .22 .56 1.33 2.56 4.83 6.37 3871 .03 .03 .06 .15 .42 1.00 1.83 3.86 4.71

2528 -- .03 .07 .15 .40 1.21 2.17 2.77 -- 3884 -- -- .06 .12 .94 2.88 4.19 -- --

2617 .02 .02 .06 .12 .38 .78 1.49 4.77 5.54 3941 -- -- .05 .08 .92 2.02 2.42 -- --

2619 .02 .03 .07 .15 .39 .86 1.64 3.43 4.18 3963 -- -- -- .02 .06 .30 -- -- --

2621 .02 .04 .08 .13 .36 .88 1.80 3.71 4.34 4040 .03 .04 .07 .15 .47 .96 1.76 4.16 4.79

2675 .04 .05 .10 .19 .50 1.10 2.30 5.35 6.48 4058 -- -- .08 .15 .59 1.14 9.52 -- --

2676 .10 .10 .10 .20 .50 1.30 2.50 4.62 7.00 4098 .03 .04 .10 .10 .30 .70 1.40 2.80 3.40

2679 .02 .02 .06 .10 .30 .90 2.00 4.53 6.11 4100 .02 .04 .05 .13 .39 .90 1.66 4.91 5.25

2715 .03 .04 .08 .19 .50 1.06 2.00 4.00 4.95 4137 .10 .10 .10 .20 .50 1.20 2.10 4.40 5.40

2744 .03 .03 .09 .14 .40 .95 1.75 3.57 4.47 4191 .03 .04 .10 .12 .40 1.02 2.20 4.26 5.54

2758 -- .02 .03 .06 .20 .71 1.77 5.57 -- 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- .01 .04 .23 .84 1.65 -- -- 4257 .05 .06 .10 .20 .62 1.40 2.60 5.18 7.04

2797 .01 .01 .02 .04 .14 .37 .77 1.84 2.34 4258 .10 .10 .10 .20 .70 1.45 2.80 5.96 8.36

2811 .02 .03 .10 .10 .32 .94 1.80 3.80 5.19 4278 .02 .03 .06 .15 .45 1.14 2.24 4.37 5.63

2813 -- -- .05 .20 .53 1.38 2.40 -- -- 4299 .03 .04 .06 .13 .30 .63 .98 1.28 1.53

2814 -- -- .01 .03 .07 .44 1.93 -- -- 4300 .01 .01 .03 .12 .46 1.28 2.60 5.42 7.71

2815 .10 .10 .10 .20 .40 .80 2.03 3.95 5.01 4305 .01 .01 .02 .09 .45 1.23 2.56 5.55 6.90

2818 .02 .02 .06 .13 .40 1.01 1.96 4.97 6.28 4307 .01 .01 .03 .11 .43 1.18 2.53 7.43 9.34

2986 .05 .05 .10 .25 .81 1.71 2.60 5.41 8.53 4309 .02 .03 .06 .17 .55 1.36 2.60 5.41 7.07

3005 .03 .04 .10 .18 .50 1.10 1.90 4.03 4.88 4311 .02 .03 .07 .20 .59 1.47 2.74 5.31 6.79

3033 .02 .02 .04 .08 .19 .41 .84 1.81 2.56 4313 .03 .04 .12 .28 .67 1.60 2.79 5.50 9.51

3034 -- -- -- -- .16 -- -- -- -- 4319 -- .05 .12 .19 .53 1.09 3.00 3.96 --

3047 -- -- .06 .13 .77 1.58 8.84 -- -- 4329 .03 .03 .09 .20 .56 1.34 2.51 5.31 6.77

3103 -- -- .12 .20 .30 1.27 3.41 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 .02 .03 .09 .20 .56 1.25 2.30 4.82 5.84 4375 .10 .10 .10 .20 .40 1.10 2.13 5.00 6.78

3156 .04 .05 .10 .20 .56 1.23 2.44 6.23 11.53 4392 .03 .03 .07 .21 .64 1.50 3.15 7.06 7.30

3171 .03 .04 .09 .19 .51 1.19 2.22 4.70 5.61 4425 .03 .03 .10 .10 .30 .70 1.47 2.74 3.40

3189 .03 .04 .05 .10 .22 .57 1.16 2.95 4.46 4440 .02 .03 .05 .14 .41 1.00 1.84 4.04 4.91

3260 .01 .01 .05 .13 .35 1.09 2.28 3.81 4.31 4476 .04 .06 .10 .20 .50 1.10 2.10 4.20 5.00

3267 -- .02 .04 .09 .23 .68 1.69 6.00 -- 4498 -- -- -- .09 .25 .46 -- -- --

3270 .05 .10 .10 .10 .40 .90 1.60 3.60 4.79 4517 .02 .03 .06 .16 .47 1.10 2.15 4.08 4.94

3272 -- -- .01 .04 .14 .36 .54 -- -- 4520 .10 .10 .10 .20 .50 1.10 2.10 4.10 4.84

3277 -- -- .02 .03 .14 .24 .75 -- -- 4525 -- -- .05 .10 .46 .82 10.42 -- --

3278 .02 .03 .07 .10 .30 .80 1.58 3.23 3.80 4563 -- -- .04 .08 .59 1.83 3.30 -- --

3280 .01 .01 .03 .06 .18 .56 1.21 2.19 2.94 4570 .02 .04 .10 .13 .36 .90 1.85 4.00 4.85

3281 -- -- .04 .12 .28 .56 1.05 -- -- 4577 .03 .05 .10 .23 .64 1.31 2.49 4.89 6.46

3283 .01 .01 .02 .10 .40 1.04 2.19 4.86 5.70 4591 .02 .03 .06 .17 .51 1.22 2.35 4.46 6.06

3284 .01 .02 .10 .20 .50 1.15 2.17 4.35 5.56 4670 .02 .03 .09 .10 .40 .90 1.70 3.40 4.59

3285 .05 .10 .10 .20 .50 1.20 2.29 4.34 5.57 4671 -- .01 .03 .07 .31 .90 1.76 3.21 --

3329 .02 .03 .06 .11 .40 1.02 2.04 4.16 5.89 4679 .04 .05 .10 .19 .46 1.10 2.20 5.00 6.01

3335 .03 .04 .15 .26 .61 1.60 2.58 5.00 10.21 4696 -- -- -- .55 .66 .97 -- -- --

3370 .02 .03 .07 .20 .57 1.25 2.35 4.85 5.69 4703 -- .02 .08 .15 .34 .90 1.55 3.90 --

3410 .04 .05 .10 .14 .40 .88 1.74 3.35 3.98 4704 .03 .03 .08 .23 .65 1.64 3.21 5.38 7.95

3415 .02 .04 .10 .20 .50 1.20 2.20 4.79 5.69 4731 -- .01 .02 .06 .27 .77 1.86 5.94 --

3430 .01 .01 .03 .10 .40 1.15 2.39 5.72 7.21 4792 .10 .10 .10 .20 .50 1.20 2.20 4.20 4.90

3431 .01 .01 .04 .09 .37 1.15 2.73 7.47 12.96 4819 .10 .10 .10 .30 .80 1.50 2.70 4.30 4.46

3441 -- -- .10 .22 .50 1.13 2.92 -- -- 4852 -- -- .07 .37 .80 2.33 3.66 -- --

3442 .02 .03 .05 .11 .29 .67 1.61 2.56 3.16 4866 .03 .04 .10 .20 .52 1.23 2.24 4.31 5.51

3446 .03 .04 .06 .14 .37 .81 1.37 2.73 3.48 4876 -- .10 .10 .20 .70 1.30 3.30 6.58 --

3460 -- -- .04 .12 1.07 1.48 2.06 -- -- 4878 .03 .04 .10 .25 .69 1.60 3.13 6.19 7.21

3462 .05 .05 .10 .18 .46 .90 1.38 4.23 5.93 4880 .02 .03 .07 .10 .30 .79 1.50 3.40 4.03

Appendix 4–4.6. Empirical distribution of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 265

4920 0.03 0.03 0.10 0.11 0.38 1.00 1.90 4.39 5.47 5957 0.03 0.04 0.10 0.20 0.50 1.10 2.10 4.36 5.65

4934 -- -- -- .07 .15 1.02 -- -- -- 5958 .01 .02 .05 .17 .52 1.14 2.19 3.42 4.19

4972 .03 .03 .10 .19 .45 1.00 2.00 4.12 4.92 5973 -- .01 .03 .07 .20 .77 2.03 4.84 --

4973 .03 .05 .10 .30 .66 1.39 2.81 5.83 7.21 5996 .03 .04 .10 .15 .48 1.10 2.06 4.12 5.25

4974 .02 .03 .06 .11 .35 .79 1.61 3.45 4.34 6017 -- .02 .03 .07 .27 .83 2.10 4.39 --

4975 .10 .10 .10 .30 .70 1.40 2.40 5.04 5.94 6024 .02 .03 .08 .24 .67 1.75 2.90 6.26 8.23

4978 .02 .02 .04 .11 .40 1.04 2.31 4.95 5.49 6050 -- -- .17 .24 .50 1.20 2.02 -- --

4979 -- -- -- .32 1.85 2.69 -- -- -- 6104 .02 .03 .06 .10 .30 .70 1.50 3.47 4.20

4982 .02 .03 .06 .14 .39 .95 1.87 3.55 5.09 6108 .03 .04 .10 .20 .70 1.50 2.69 5.40 6.37

5018 .02 .03 .07 .17 .49 1.19 1.98 4.03 4.92 6136 .03 .04 .10 .10 .30 .70 1.40 2.86 3.40

5048 .02 .04 .10 .10 .30 .80 1.47 3.39 4.75 6166 -- .03 .05 .10 .32 .87 1.54 2.73 --

5049 -- .10 .10 .10 .30 .70 1.30 4.95 -- 6176 .02 .02 .08 .26 .58 1.19 2.63 6.68 7.26

5056 -- -- -- .14 .39 .82 -- -- -- 6177 .04 .05 .10 .20 .60 1.40 2.70 5.40 7.29

5057 .01 .01 .02 .05 .19 .59 1.56 3.17 3.85 6210 .03 .05 .10 .20 .58 1.30 2.40 4.74 5.95

5060 .01 .01 .02 .07 .30 .90 2.40 6.16 7.12 6211 .01 .02 .05 .17 .60 1.43 2.61 4.70 6.25

5081 .02 .03 .07 .22 .64 1.39 2.40 4.72 6.42 6270 .10 .10 .10 .30 .70 1.50 2.70 5.10 7.00

5094 .02 .03 .10 .20 .50 1.20 2.30 4.70 5.83 6275 -- -- -- -- .00 -- -- -- --

5113 .03 .04 .10 .11 .40 1.00 2.23 4.89 6.44 6276 -- -- .06 .18 1.39 3.38 8.32 -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 .03 .03 .08 .20 .55 1.27 2.28 4.40 5.24

5123 -- -- .07 .23 .33 1.62 2.70 -- -- 6434 -- -- .10 .23 .70 1.12 1.89 -- --

5192 .02 .03 .10 .20 .50 1.25 2.28 4.89 5.63 6504 .02 .03 .10 .10 .30 .80 1.60 3.32 4.17

5193 .03 .04 .10 .15 .50 1.20 2.29 4.70 5.90 6558 -- -- .05 .06 .60 .99 1.89 -- --

5224 .01 .02 .07 .23 .67 1.34 2.83 7.29 8.45 6615 .05 .10 .10 .10 .40 .87 1.70 4.66 6.08

5228 .02 .03 .05 .12 .49 1.24 2.20 5.00 5.31 6660 -- .03 .05 .22 .52 1.17 2.39 5.08 --

5235 -- -- .05 .14 .57 .97 2.92 -- -- 6663 -- .01 .10 .20 .62 1.50 1.98 5.14 --

5247 .02 .03 .10 .10 .35 .80 1.60 3.10 3.70 6734 .01 .02 .05 .12 .34 .90 1.74 3.39 4.84

5258 .02 .03 .08 .19 .48 1.13 2.21 4.63 5.57 6736 .03 .04 .10 .10 .30 .80 1.60 3.59 4.42

5303 .02 .03 .05 .13 .35 1.01 1.90 4.57 7.00 6740 -- -- .08 .20 1.07 3.43 4.17 -- --

5312 .04 .05 .10 .12 .40 1.00 2.00 4.29 6.08 6750 .01 .01 .02 .06 .31 1.29 2.78 9.57 10.27

5341 -- -- .09 .27 .62 3.49 12.51 -- -- 6757 .01 .02 .07 .19 .55 1.31 2.40 4.79 5.89

5342 -- -- -- -- .00 -- -- -- -- 6775 .01 .02 .05 .12 .32 .85 1.58 2.89 4.58

5348 .04 .06 .10 .20 .70 1.50 2.79 5.00 5.60 6776 .02 .04 .10 .10 .35 .80 1.50 3.43 4.42

5358 .02 .03 .06 .12 .36 .90 1.79 3.46 4.19 6788 .02 .03 .07 .24 .55 1.25 2.64 4.69 5.54

5398 .03 .03 .10 .20 .60 1.33 2.45 5.00 6.38 6792 .02 .03 .08 .10 .30 .60 1.20 2.30 3.37

5410 .02 .03 .08 .10 .30 .80 1.50 3.70 4.27 6794 -- -- -- .57 1.24 7.54 -- -- --

5411 .01 .01 .02 .06 .22 .70 1.45 3.26 4.28 6834 .10 .10 .10 .20 .70 1.40 2.70 5.34 6.40

5424 .01 .01 .02 .12 .59 1.66 3.29 7.15 9.40 6893 .03 .03 .09 .10 .20 .50 1.10 2.21 3.00

5429 .02 .02 .05 .13 .40 1.15 2.07 4.45 6.58 6935 .03 .04 .10 .10 .30 .80 1.50 3.30 3.87

5431 -- -- .16 .39 .70 2.10 3.20 -- -- 6981 .01 .03 .08 .17 .54 1.33 2.23 5.66 5.74

5461 .03 .04 .08 .20 .57 1.32 2.49 5.38 6.70 7020 -- .02 .04 .14 .42 1.12 2.44 5.82 --

5463 .10 .10 .10 .20 .60 1.30 2.50 5.10 6.10 7060 .03 .05 .10 .13 .39 .91 1.71 3.66 5.51

5471 -- -- .03 .05 .11 .48 1.13 -- -- 7066 .03 .04 .10 .20 .60 1.40 2.63 5.02 6.34

5477 -- -- .10 .15 .44 .91 8.73 -- -- 7074 .02 .03 .06 .10 .30 .70 1.40 3.40 4.30

5528 .03 .04 .09 .22 .58 1.26 2.35 4.48 5.98 7097 -- .02 .11 .20 .60 1.48 2.90 5.03 --

5579 -- -- -- -- .55 -- -- -- -- 7116 .02 .02 .05 .13 .36 .82 1.45 3.62 4.84

5580 -- -- .07 .32 1.01 1.84 2.18 -- -- 7140 .02 .02 .06 .14 .45 1.30 2.75 6.10 7.66

5589 .01 .01 .02 .09 .28 .70 1.10 1.64 1.68 7173 .01 .01 .03 .13 .56 1.42 3.10 7.30 7.89

5590 .02 .02 .05 .10 .29 .78 1.20 3.45 4.35 7174 .01 .01 .03 .12 .51 1.42 2.91 6.76 8.95

5591 .02 .03 .05 .11 .30 .64 1.22 2.23 3.24 7213 .02 .03 .08 .20 .52 1.25 2.33 4.88 5.15

5592 .02 .02 .04 .09 .23 .53 1.11 2.38 2.63 7243 .03 .04 .10 .16 .41 1.04 1.90 3.90 4.60

5594 .02 .03 .05 .10 .20 .47 1.00 2.34 3.84 7262 -- .01 .02 .04 .17 .37 .61 1.82 --

5595 -- -- -- -- .03 -- -- -- -- 7274 .03 .05 .10 .21 .47 1.10 1.90 4.03 5.77

5596 .10 .10 .10 .10 .30 .70 1.40 3.04 4.17 7300 .02 .03 .06 .15 .45 1.07 2.00 3.71 5.44

5600 .02 .03 .05 .10 .26 .70 1.12 2.89 4.05 7311 -- -- .11 .20 .38 1.40 1.99 -- --

5618 -- -- .08 .23 .81 1.78 6.56 -- -- 7363 -- -- .05 .09 .24 1.90 6.83 -- --

5650 -- -- .13 .36 .50 1.45 2.43 -- -- 7422 .02 .03 .09 .13 .45 1.10 2.20 4.70 6.28

5656 .08 .10 .10 .10 .32 .80 1.70 3.61 4.60 7431 .03 .03 .07 .10 .30 .70 1.40 2.99 4.00

5658 .02 .02 .05 .12 .32 .76 1.56 3.67 5.18 7481 .02 .02 .05 .10 .20 .51 1.11 2.97 3.63

5661 .10 .10 .10 .10 .40 .90 2.31 6.73 11.01 7497 .10 .10 .10 .20 .50 1.20 2.10 4.46 5.99

5666 -- -- .04 .10 .34 .97 3.14 -- -- 7498 .08 .10 .10 .17 .50 1.30 2.10 4.83 8.40

5695 .03 .04 .10 .20 .57 1.20 2.25 4.70 6.23 7499 .05 .08 .10 .20 .47 1.10 2.05 4.04 4.68

5742 -- -- .04 .06 .21 .36 1.86 -- -- 7531 -- .03 .06 .23 .48 1.24 2.12 4.64 --

5766 -- -- -- .49 1.14 4.25 -- -- -- 7534 .02 .03 .06 .15 .45 1.05 2.04 3.58 3.95

5770 .02 .03 .09 .10 .35 .86 1.80 3.85 4.55 7556 .03 .05 .10 .20 .47 1.10 2.30 4.62 5.49

5775 -- -- -- .07 .41 1.00 -- -- -- 7594 .03 .04 .09 .21 .60 1.38 2.55 5.37 6.93

5779 -- -- .12 .19 .49 1.12 2.53 -- -- 7596 .01 .02 .05 .13 .58 1.48 2.72 4.69 5.47

5840 .02 .03 .05 .15 .43 1.06 2.06 4.72 5.95 7608 .01 .01 .04 .12 .42 1.19 2.19 4.35 5.89

5890 .01 .01 .02 .06 .20 .59 1.23 2.67 3.65 7622 -- -- .01 .01 .10 .42 1.02 -- --

5891 .02 .03 .07 .12 .34 .74 1.32 2.12 2.44 7700 .02 .02 .07 .20 .59 1.39 2.57 5.07 6.56

5897 .10 .10 .10 .20 .60 1.30 2.40 4.56 5.72 7706 .02 .03 .09 .11 .40 .90 1.80 3.90 5.67

Appendix 4–4.6. Empirical distribution of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
266 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 -- 0.03 0.08 0.15 0.55 1.04 2.59 5.83 -- 8910 -- -- 0.04 0.14 0.42 1.77 3.78 -- --

7745 0.01 .02 .07 .21 .61 1.41 2.77 5.73 7.97 8911 0.01 0.02 .04 .12 .43 1.14 2.02 4.39 4.71

7922 .01 .01 .03 .08 .17 .42 .81 1.48 2.28 8924 .02 .03 .06 .10 .25 .55 1.00 1.83 2.22

7936 .04 .05 .10 .20 .70 1.50 2.85 6.10 7.25 8929 -- -- .06 .12 .65 1.71 10.49 -- --

7943 .01 .01 .02 .06 .24 .71 1.59 3.31 4.23 8942 .05 .08 .10 .20 .69 1.42 2.70 5.60 6.64

7944 -- -- .02 .12 .38 1.30 2.00 -- -- 8944 .01 .02 .05 .17 .50 1.22 2.38 5.47 6.74

7945 .01 .01 .02 .07 .30 .93 1.99 4.78 6.01 8996 .02 .02 .06 .16 .52 1.30 2.44 4.93 6.76

7947 .05 .05 .10 .20 .50 1.30 2.57 5.59 10.65 9014 -- -- .10 .41 1.14 2.23 5.99 -- --

7948 .02 .02 .05 .11 .40 1.04 2.03 4.56 6.62 9037 .02 .03 .05 .09 .21 .49 1.10 2.36 2.72

7951 .02 .04 .09 .22 .55 1.30 2.35 4.21 5.44 9106 .02 .02 .03 .07 .14 .48 .97 2.28 7.15

7953 -- .02 .05 .10 .24 .73 2.52 4.01 -- 9107 -- -- .04 .07 .20 .80 1.31 -- --

7981 .02 .02 .05 .12 .40 1.07 2.21 3.88 5.76 9129 -- .02 .05 .05 .23 .74 1.98 3.81 --

7990 -- .02 .04 .07 .28 .85 3.21 4.77 -- 9163 .03 .04 .09 .15 .40 1.00 2.03 4.08 5.07

7992 -- -- .08 .18 1.23 2.26 3.57 -- -- 9213 .01 .01 .03 .14 .52 1.23 2.19 5.14 5.59

7997 -- .02 .04 .10 .36 .81 1.70 4.59 -- 9214 -- -- .24 .31 1.06 2.03 10.71 -- --

7999 -- -- .03 .07 .24 .84 1.64 -- -- 9222 .01 .02 .06 .14 .42 1.08 2.24 4.62 4.95

8022 -- -- .05 .09 .24 .93 1.61 -- -- 9248 -- .05 .07 .13 .32 .90 1.56 3.33 --

8023 .04 .05 .09 .10 .30 .80 1.54 3.31 4.19 9266 -- .03 .06 .18 .33 1.10 2.13 2.97 --

8047 .03 .04 .10 .18 .48 1.13 2.10 4.19 5.30 9270 .03 .04 .10 .10 .29 .60 1.23 3.19 3.73

8060 -- .02 .03 .07 .23 .96 2.53 4.02 -- 9295 -- .01 .02 .04 .12 .34 .93 1.84 --

8062 -- -- .02 .06 .34 1.22 3.43 -- -- 9304 -- -- -- -- .24 -- -- -- --

8068 -- -- .02 .07 .26 .51 1.49 -- -- 9307 .04 .04 .10 .20 .53 .96 2.07 3.65 4.01

8081 .03 .04 .07 .10 .38 1.01 2.00 4.90 6.81 9328 .01 .02 .06 .11 .37 .78 1.73 3.31 3.48

8089 -- -- .03 .12 .44 .85 1.74 -- -- 9329 -- -- -- .18 .93 1.15 -- -- --

8221 -- -- .13 .63 .98 2.03 3.84 -- -- 9345 -- -- -- -- .75 -- -- -- --

8252 .02 .03 .08 .10 .30 .80 1.50 3.21 4.39 9363 .01 .01 .02 .08 .30 .94 2.13 4.38 5.36

8265 .02 .03 .07 .19 .57 1.42 2.73 6.51 8.65 9364 .01 .01 .03 .08 .32 1.06 2.23 5.32 7.66

8289 -- -- .14 .23 .65 1.00 1.17 -- -- 9365 -- -- .07 .10 .25 .64 2.03 -- --

8305 .02 .03 .06 .10 .20 .50 1.02 2.20 2.95 9371 -- .04 .08 .18 .57 1.33 2.40 3.58 --

8335 .03 .03 .08 .22 .69 1.44 2.59 4.73 6.08 9417 .02 .02 .06 .16 .48 1.20 2.18 4.40 5.10

8400 .02 .03 .07 .12 .34 .68 1.35 3.31 4.17 9419 .01 .01 .03 .10 .40 1.07 1.98 4.07 4.89

8445 .03 .03 .05 .15 .46 1.28 2.42 5.33 7.35 9435 -- .02 .06 .17 .41 .80 1.40 5.10 --

8446 .02 .03 .10 .20 .49 1.20 2.20 4.53 5.57 9491 .03 .03 .10 .20 .55 1.30 2.40 4.97 5.92

8451 .02 .02 .06 .10 .31 .84 1.54 3.87 4.23 9499 .03 .04 .10 .10 .33 1.00 1.80 3.39 4.11

8531 .03 .03 .08 .20 .53 1.18 2.12 3.88 5.47 9522 -- -- -- .22 .40 7.87 -- -- --

8541 -- .03 .07 .18 .44 .99 2.29 4.05 -- 9527 .04 .05 .10 .10 .30 .80 1.65 3.46 4.10

8544 .04 .05 .10 .18 .50 1.30 2.28 5.66 8.33 9532 .02 .03 .10 .18 .50 1.10 2.00 4.60 5.69

8545 -- -- .04 .18 .47 .60 1.08 -- -- 9544 -- -- -- .10 .24 4.34 -- -- --

8563 .10 .10 .10 .20 .60 1.30 2.40 4.91 6.20 9565 .02 .03 .09 .11 .38 .90 1.96 4.02 4.81

8566 .02 .03 .05 .13 .35 .97 1.78 3.37 4.22 9570 .10 .10 .10 .20 .40 .90 1.70 3.50 4.45

8583 .10 .10 .10 .10 .40 1.10 1.80 4.53 5.33 9574 -- -- .10 .10 .60 1.10 2.42 -- --

8584 .03 .04 .10 .16 .48 1.10 2.10 3.99 5.21 9588 .02 .02 .07 .10 .30 .90 2.00 4.40 5.50

8623 .05 .07 .10 .20 .50 1.20 2.20 3.90 4.84 9665 .03 .04 .10 .20 .58 1.30 2.34 5.02 6.31

8625 .02 .03 .07 .16 .45 1.07 2.12 3.99 5.95 9715 .02 .03 .10 .18 .50 1.20 2.11 4.50 5.58

8630 .02 .03 .07 .11 .32 .84 1.62 2.86 3.86 9729 .01 .01 .03 .09 .36 .97 1.85 3.95 4.79

8631 .03 .04 .06 .15 .39 .90 1.75 3.76 4.77 9772 .02 .02 .05 .14 .42 1.09 2.42 5.95 8.04

8646 .02 .03 .06 .15 .46 1.16 2.05 4.17 4.97 9814 -- -- .04 .11 .36 1.09 1.86 -- --

8647 .03 .04 .10 .10 .30 .76 1.50 3.20 4.31 9815 .03 .04 .09 .20 .50 1.33 2.25 5.59 7.86

8677 .02 .05 .10 .21 .47 1.10 2.06 4.38 5.50 9816 -- .04 .05 .12 .33 .86 2.34 4.74 --

8696 -- -- .03 .16 1.18 3.56 5.63 -- -- 9817 .04 .06 .10 .14 .45 1.00 1.90 4.24 4.80

8743 .03 .04 .10 .20 .60 1.30 2.70 5.27 6.91 9829 .02 .02 .06 .10 .20 .59 1.20 2.63 3.40

8761 .02 .03 .10 .10 .30 .70 1.50 3.09 4.16 9830 .01 .01 .03 .07 .14 .50 .94 2.38 3.38

8778 .04 .05 .10 .20 .60 1.34 2.45 4.54 5.72 9858 .02 .03 .06 .12 .32 .79 1.54 3.28 4.05

8845 .03 .04 .10 .15 .43 1.20 2.33 5.11 6.10 9893 .02 .03 .08 .14 .40 1.00 1.97 4.03 5.10

8859 .03 .04 .10 .22 .65 1.35 2.56 4.55 5.58 9916 .03 .05 .10 .24 .70 1.41 2.61 4.90 5.53

8898 .03 .03 .09 .18 .55 1.32 2.36 5.05 6.62 9976 .02 .03 .07 .10 .32 .92 1.80 3.76 5.20

8908 -- -- .07 .15 .47 1.39 2.25 -- --

Appendix 4–4.6. Empirical distribution of storm depth defined by 48-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 267

Appendix 4–4.7. Empirical distribution of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- -- -- 0.09 -- -- -- -- 1154 -- 0.02 0.04 0.14 0.54 1.50 3.31 5.78 --

0016 0.01 0.01 0.03 0.10 .38 1.01 2.05 4.00 5.77 1165 0.02 .02 .05 .13 .42 1.09 1.93 3.44 4.08

0050 .02 .02 .07 .20 .56 1.30 2.12 3.78 6.11 1185 .02 .03 .06 .12 .30 .70 1.29 2.50 3.09

0054 -- -- .10 .31 .45 1.32 2.29 -- -- 1186 -- .01 .05 .14 .51 1.04 3.33 6.92 --

0120 -- -- -- .23 2.21 2.87 -- -- -- 1188 -- -- -- .48 .73 1.14 -- -- --

0145 -- .01 .02 .08 .30 1.00 1.86 5.67 -- 1245 -- -- -- .18 .82 2.95 -- -- --

0146 -- -- .08 .17 .41 1.03 2.42 -- -- 1246 .10 .10 .10 .20 .70 1.40 2.70 4.76 6.00

0174 .03 .05 .10 .10 .30 .80 1.80 4.54 5.40 1267 .01 .02 .05 .12 .30 .82 1.93 3.58 6.73

0178 -- -- -- .12 .73 2.06 -- -- -- 1304 .02 .03 .05 .15 .51 1.15 2.30 5.75 7.15

0179 .02 .02 .05 .09 .29 .67 1.56 3.68 6.26 1325 .03 .04 .07 .17 .61 1.57 2.83 5.72 7.91

0202 .10 .10 .10 .20 .50 1.40 2.40 4.11 5.32 1429 .03 .03 .08 .18 .50 1.30 2.42 5.26 6.04

0206 .05 .07 .10 .21 .65 1.40 2.56 4.78 6.21 1431 .02 .03 .08 .20 .60 1.44 2.75 5.00 5.83

0208 -- -- -- -- .42 -- -- -- -- 1432 .02 .02 .06 .18 .61 1.44 2.54 5.46 7.10

0211 .01 .01 .02 .07 .27 .81 1.72 3.67 4.39 1433 .03 .03 .07 .22 .57 1.36 2.64 5.31 6.42

0244 -- -- .05 .24 .92 1.58 2.52 -- -- 1434 .02 .03 .07 .19 .60 1.43 2.65 4.88 6.45

0248 .03 .03 .09 .10 .30 .75 1.50 3.25 4.22 1435 .02 .03 .07 .19 .61 1.50 2.65 4.81 5.87

0262 .02 .03 .10 .22 .62 1.51 2.80 5.35 7.27 1436 .03 .03 .07 .22 .60 1.53 2.74 5.29 6.26

0271 -- -- -- .09 1.95 4.61 -- -- -- 1437 -- -- .02 .04 .13 1.22 2.60 -- --

0380 .02 .02 .06 .16 .49 1.14 2.38 7.01 7.87 1438 .02 .03 .07 .18 .60 1.36 2.52 4.91 5.70

0394 -- -- -- .15 .47 2.15 -- -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- -- .36 1.81 8.28 -- -- -- 1492 .04 .05 .10 .20 .50 1.20 2.20 4.58 5.93

0427 -- -- .10 .10 .70 1.60 3.26 -- -- 1500 -- -- -- .24 1.55 2.05 -- -- --

0428 .01 .01 .03 .12 .49 1.31 2.54 5.35 6.54 1528 .03 .05 .10 .11 .40 1.09 2.21 4.73 6.53

0429 -- .01 .02 .10 .52 1.44 3.65 7.29 -- 1541 -- -- .10 .30 .80 1.80 4.00 -- --

0463 -- .04 .08 .21 .38 .77 1.31 5.69 -- 1569 .02 .02 .06 .15 .55 1.50 2.54 7.37 10.28

0493 -- -- -- .83 1.48 2.04 -- -- -- 1632 -- -- -- .28 .73 1.03 -- -- --

0495 .02 .02 .06 .12 .30 .73 1.28 2.72 3.60 1641 .02 .03 .07 .15 .42 .82 1.94 4.29 5.56

0496 -- -- .04 .13 .17 .44 .78 -- -- 1646 .04 .05 .10 .10 .34 .90 1.70 3.74 4.39

0498 -- -- -- .21 .26 .30 -- -- -- 1663 -- -- .10 .23 1.05 1.95 5.25 -- --

0509 .03 .04 .10 .20 .58 1.31 2.52 5.37 7.25 1671 .03 .05 .10 .20 .55 1.40 2.70 5.50 6.50

0518 .02 .03 .10 .21 .69 1.40 2.70 5.50 7.25 1680 .03 .04 .07 .20 .55 1.25 2.29 4.70 6.25

0521 -- -- .05 .12 .41 .86 2.12 -- -- 1694 -- .10 .10 .10 .40 .90 2.41 3.93 --

0556 -- .04 .08 .15 .41 1.45 2.02 4.84 -- 1696 .02 .02 .05 .14 .41 .98 1.88 3.47 4.77

0569 .03 .04 .10 .20 .66 1.78 3.50 7.28 9.28 1697 -- .03 .05 .11 .32 .85 2.20 3.06 --

0572 .03 .03 .08 .19 .60 1.48 2.78 6.36 8.69 1698 .01 .02 .10 .17 .40 1.00 2.00 4.52 4.90

0576 -- .02 .03 .06 .30 1.18 2.03 7.72 -- 1720 .10 .10 .10 .10 .30 1.18 2.69 3.96 8.74

0580 .02 .04 .07 .16 .45 1.24 2.64 5.48 6.34 1761 -- -- .01 .10 .31 1.01 2.16 -- --

0587 .01 .02 .05 .20 .70 1.63 3.21 7.36 8.61 1773 .05 .06 .10 .30 .80 1.70 3.20 5.80 7.50

0605 -- .06 .20 .30 .85 1.85 2.78 5.62 -- 1810 -- -- -- .40 .71 1.71 -- -- --

0639 .04 .05 .10 .20 .50 1.35 2.60 4.92 6.48 1823 -- -- -- .28 .60 3.07 -- -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 .02 .04 .07 .23 .71 1.62 2.71 5.81 6.91

0665 .02 .02 .06 .17 .58 1.40 2.56 5.33 6.46 1875 -- -- .33 .53 1.31 2.94 3.63 -- --

0689 .03 .03 .08 .15 .40 1.20 2.46 5.30 8.38 1876 -- -- .10 .21 .56 1.53 2.25 -- --

0690 .10 .10 .10 .20 .40 1.20 2.10 4.71 6.21 1889 .01 .01 .04 .12 .55 1.40 2.56 6.80 10.24

0691 .02 .02 .06 .19 .58 1.30 2.42 4.94 5.97 1903 .10 .10 .10 .20 .40 .90 1.70 3.94 4.27

0708 -- .10 .10 .20 .50 1.48 3.07 5.22 -- 1914 -- -- -- .58 1.41 2.41 -- -- --

0738 .02 .03 .08 .20 .60 1.39 2.53 4.97 6.20 1920 .03 .04 .10 .22 .62 1.41 2.45 4.48 5.55

0776 .02 .03 .06 .10 .34 .88 1.80 3.64 4.64 1921 .03 .05 .10 .27 .80 1.60 2.97 5.90 7.60

0779 .10 .10 .10 .10 .30 .70 1.99 3.44 4.33 1937 .03 .04 .11 .30 .74 1.47 3.00 5.77 7.14

0784 .02 .03 .10 .10 .30 .90 1.80 3.70 4.96 1956 .02 .03 .10 .25 .76 1.75 3.10 6.14 8.15

0786 .01 .01 .02 .07 .27 .74 1.56 2.97 3.69 1970 -- -- -- .10 .43 4.34 -- -- --

0917 .03 .04 .10 .31 .90 1.86 3.53 6.51 7.54 2014 .01 .01 .02 .06 .35 1.14 2.67 5.59 7.86

0923 -- -- -- .26 2.02 7.46 -- -- -- 2015 .01 .01 .02 .08 .35 1.10 2.53 6.82 8.62

0926 .03 .03 .10 .20 .56 1.31 2.52 4.82 6.38 2019 -- -- -- .29 1.62 4.99 -- -- --

0950 -- -- .04 .10 .20 .68 1.40 -- -- 2024 .03 .04 .10 .23 .62 1.40 2.44 4.71 5.92

0996 -- -- -- .17 2.00 5.62 -- -- -- 2042 -- -- -- .04 .20 .33 -- -- --

1013 .10 .10 .10 .20 .40 1.10 2.70 6.46 14.22 2043 -- .01 .04 .10 .20 .44 .84 2.74 --

1017 .02 .03 .10 .15 .47 1.10 2.10 4.54 5.90 2048 .03 .03 .10 .12 .40 1.20 2.29 5.10 6.00

1042 -- -- -- .60 1.73 3.25 -- -- -- 2050 -- -- .02 .05 .18 .70 1.61 -- --

1048 -- -- -- .42 .75 1.93 -- -- -- 2051 -- -- .05 .13 .32 .86 2.59 -- --

1053 .03 .03 .06 .14 .42 1.16 2.15 4.17 4.59 2053 -- -- -- .08 .18 .70 -- -- --

1057 .02 .03 .06 .15 .42 1.01 2.00 3.72 4.39 2073 .03 .03 .08 .21 .60 1.29 2.49 6.00 9.11

1063 -- -- -- .21 1.79 4.32 -- -- -- 2082 .02 .03 .06 .10 .30 .70 1.40 3.26 4.30

1068 .03 .04 .10 .20 .60 1.40 2.57 4.77 5.88 2086 .04 .05 .10 .20 .65 1.42 2.60 5.06 6.51

1080 .03 .03 .05 .14 .34 .79 1.32 3.44 4.96 2088 -- -- .10 .20 1.05 1.70 2.86 -- --

1081 .02 .03 .09 .23 .60 1.35 2.55 4.91 6.61 2090 .10 .10 .10 .30 .70 1.50 2.40 5.17 6.89

1133 -- -- .01 .02 .28 .71 1.13 -- -- 2096 .04 .05 .10 .20 .62 1.30 2.50 4.80 5.88

1136 .01 .01 .02 .07 .30 1.05 2.44 5.39 7.04 2128 .02 .04 .07 .16 .59 1.44 2.74 5.43 6.37

1138 -- -- -- .75 1.67 4.36 -- -- -- 2131 .03 .05 .10 .20 .50 1.25 2.35 4.40 5.65

1139 -- -- .05 .25 .82 2.35 3.32 -- -- 2142 -- -- -- 2.19 2.34 5.62 -- -- --

Appendix 4–4.7. Empirical distribution of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
268 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 0.02 0.09 0.35 0.90 4.00 -- -- 3463 -- -- 0.05 0.18 0.65 1.05 2.34 -- --

2206 0.02 0.03 .07 .20 .67 1.83 3.06 6.23 8.14 3476 0.02 0.02 .06 .18 .55 1.20 2.52 4.74 7.02

2238 .01 .01 .02 .06 .19 .69 2.07 3.24 3.79 3485 -- -- .08 .10 .51 3.13 9.25 -- --

2240 -- -- .03 .14 .41 .89 1.96 -- -- 3507 .06 .07 .10 .20 .60 1.60 3.02 5.40 6.35

2242 .01 .01 .04 .19 .61 1.40 2.44 4.63 6.31 3546 .03 .04 .10 .27 .77 1.80 3.29 5.95 7.68

2244 .01 .01 .08 .20 .60 1.50 2.76 5.55 6.82 3547 .02 .03 .08 .21 .60 1.39 2.49 4.27 6.16

2247 -- -- .04 .21 .55 1.71 3.38 -- -- 3579 -- -- .12 .24 .62 1.67 2.79 -- --

2309 .05 .05 .15 .35 .83 1.70 2.87 6.44 7.75 3642 .03 .05 .10 .21 .65 1.50 2.90 5.42 6.85

2312 .10 .10 .10 .30 .80 1.80 3.20 5.20 6.25 3646 .03 .04 .08 .20 .56 1.25 2.29 5.12 6.14

2334 -- -- .05 .25 1.01 1.90 4.14 -- -- 3668 -- -- -- 1.69 2.52 5.88 -- -- --

2336 .02 .04 .10 .20 .55 1.34 2.70 3.89 4.53 3673 -- -- -- .07 1.20 3.64 -- -- --

2354 -- -- .05 .12 .49 1.10 1.69 -- -- 3686 .07 .10 .10 .27 .70 1.50 2.60 4.93 6.47

2355 -- -- .04 .09 .45 1.13 3.08 -- -- 3691 .02 .04 .10 .20 .60 1.38 2.56 5.19 6.29

2357 .01 .01 .02 .05 .27 .91 1.82 4.85 5.73 3734 -- -- -- .03 2.68 7.97 -- -- --

2360 .01 .01 .02 .06 .25 .82 1.82 4.30 5.50 3771 .10 .10 .10 .20 .70 1.50 3.04 5.34 6.54

2361 .02 .02 .05 .10 .30 .80 1.92 4.74 19.88 3789 -- .01 .04 .10 .24 .51 .97 2.55 --

2394 .02 .03 .09 .21 .62 1.50 2.84 5.54 6.60 3826 .02 .03 .12 .23 .59 1.17 2.00 4.61 5.64

2404 .02 .03 .09 .20 .60 1.39 2.50 4.81 6.26 3831 .03 .04 .07 .19 .59 1.50 2.75 5.02 6.14

2415 .03 .04 .10 .26 .76 1.68 3.14 6.10 7.72 3841 -- .04 .12 .21 .62 1.45 2.66 5.14 --

2462 .04 .05 .10 .24 .70 1.57 2.90 5.90 7.25 3871 .03 .04 .06 .16 .48 1.09 2.06 4.39 5.15

2528 -- .04 .08 .20 .50 1.63 2.39 3.41 -- 3884 -- -- -- .22 1.38 3.53 -- -- --

2617 .02 .03 .06 .15 .41 .84 1.82 5.25 5.65 3941 -- -- .06 .24 1.02 2.16 2.95 -- --

2619 .02 .03 .06 .15 .38 1.02 1.90 3.80 4.46 3963 -- -- -- .02 .06 .30 -- -- --

2621 .02 .04 .08 .15 .40 .99 2.10 3.96 5.32 4040 .03 .04 .07 .15 .50 1.10 2.02 4.65 5.26

2675 .04 .05 .10 .20 .60 1.38 2.70 5.77 8.21 4058 -- -- -- .42 .94 2.38 -- -- --

2676 .10 .10 .10 .20 .60 1.60 2.84 6.51 7.62 4098 .03 .04 .10 .10 .32 .80 1.70 3.21 3.90

2679 .02 .02 .07 .10 .30 1.03 2.30 5.18 6.68 4100 .02 .04 .05 .15 .41 .97 2.13 5.40 6.18

2715 .02 .04 .09 .20 .56 1.20 2.26 4.50 6.49 4137 .10 .10 .10 .30 .65 1.50 2.40 5.11 7.01

2744 .03 .04 .10 .16 .46 1.10 2.10 3.80 5.30 4191 .03 .04 .10 .15 .45 1.20 2.50 5.07 5.87

2758 -- .02 .03 .06 .21 1.25 2.23 6.06 -- 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- -- .02 .49 1.39 -- -- -- 4257 .05 .06 .10 .30 .80 1.70 3.20 6.20 8.20

2797 .01 .01 .02 .05 .16 .44 .92 2.05 2.61 4258 -- .10 .10 .30 .70 1.85 3.30 7.97 --

2811 .03 .03 .10 .14 .40 1.10 2.00 4.41 5.42 4278 .02 .03 .07 .19 .52 1.32 2.46 4.85 5.96

2813 -- -- .05 .21 .60 1.69 2.63 -- -- 4299 -- .05 .06 .13 .31 .65 1.09 1.50 --

2814 -- -- -- .02 .10 1.10 -- -- -- 4300 .01 .01 .05 .19 .63 1.70 3.34 7.19 9.27

2815 .10 .10 .10 .20 .40 .80 2.32 4.50 5.43 4305 .01 .01 .03 .14 .62 1.64 3.11 6.60 8.95

2818 .02 .02 .07 .14 .47 1.11 1.95 4.98 8.28 4307 .01 .01 .03 .17 .65 1.68 3.24 8.42 14.86

2986 .04 .05 .11 .29 1.03 1.89 3.37 7.89 8.98 4309 .02 .03 .07 .22 .75 1.66 3.15 6.17 8.38

3005 .03 .04 .10 .20 .60 1.30 2.34 4.49 5.51 4311 .02 .04 .08 .23 .72 1.79 3.20 6.52 8.09

3033 .02 .03 .04 .08 .20 .44 .89 2.24 2.96 4313 .02 .05 .10 .29 .75 1.76 3.61 8.73 10.43

3034 -- -- -- -- .16 -- -- -- -- 4319 -- -- .13 .29 .76 1.40 3.62 -- --

3047 -- -- -- .12 .73 2.23 -- -- -- 4329 .03 .04 .10 .25 .69 1.61 3.10 6.39 8.03

3103 -- -- .11 .19 .30 1.46 3.97 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 .02 .03 .10 .25 .70 1.50 2.78 5.34 6.47 4375 .10 .10 .10 .20 .50 1.20 2.40 5.81 7.02

3156 .04 .05 .10 .20 .60 1.43 2.80 7.06 11.57 4392 .03 .04 .08 .26 .89 2.03 3.48 7.25 8.78

3171 .03 .04 .10 .20 .60 1.40 2.50 5.22 6.14 4425 .03 .03 .10 .10 .30 .80 1.60 2.89 4.02

3189 .03 .03 .08 .11 .30 .70 1.43 3.53 4.52 4440 .02 .03 .05 .16 .51 1.17 2.09 4.19 5.76

3260 .01 .02 .05 .13 .39 1.14 2.36 3.96 4.32 4476 .04 .06 .10 .22 .60 1.26 2.30 4.71 5.54

3267 -- .03 .04 .10 .33 .80 2.23 6.03 -- 4498 -- -- -- .09 .25 .46 -- -- --

3270 .05 .10 .10 .20 .40 1.00 1.88 4.25 5.30 4517 .02 .03 .07 .19 .54 1.27 2.49 4.55 5.78

3272 -- -- -- .07 .30 .43 -- -- -- 4520 .10 .10 .10 .20 .60 1.25 2.50 4.70 6.22

3277 -- -- .02 .03 .14 .36 .82 -- -- 4525 -- -- -- .27 .81 5.35 -- -- --

3278 .03 .03 .07 .11 .34 .94 1.80 3.52 4.37 4563 -- -- -- .09 .60 2.83 -- -- --

3280 .01 .01 .03 .08 .20 .66 1.40 2.40 3.03 4570 .03 .04 .10 .17 .40 1.06 2.10 4.40 5.64

3281 -- -- .05 .14 .33 .59 1.08 -- -- 4577 .03 .05 .10 .29 .75 1.64 2.94 5.95 7.59

3283 .01 .01 .03 .13 .49 1.29 2.59 5.44 6.59 4591 .03 .03 .08 .20 .61 1.48 2.70 5.69 6.29

3284 .02 .03 .10 .20 .60 1.37 2.59 5.10 6.10 4670 .02 .03 .10 .15 .43 1.06 2.06 3.80 5.53

3285 .06 .10 .10 .20 .60 1.50 2.60 5.08 6.24 4671 -- .02 .03 .09 .32 1.03 2.29 3.31 --

3329 .02 .03 .06 .14 .50 1.20 2.40 4.50 6.42 4679 .04 .05 .10 .20 .60 1.30 2.50 5.73 7.15

3335 .03 .05 .18 .30 .81 1.80 3.73 6.87 11.00 4696 -- -- -- .55 .66 .97 -- -- --

3370 .03 .03 .09 .25 .69 1.49 2.82 5.35 6.26 4703 -- .02 .10 .18 .41 .98 1.98 5.29 --

3410 .04 .05 .10 .19 .47 1.00 2.00 3.90 4.88 4704 .02 .03 .08 .26 .81 1.97 3.93 7.06 8.75

3415 .02 .04 .10 .20 .60 1.40 2.64 5.30 6.56 4731 -- .01 .03 .16 .35 1.01 2.18 6.89 --

3430 .01 .01 .03 .14 .53 1.49 3.09 6.59 8.53 4792 .10 .10 .10 .20 .60 1.30 2.69 4.70 5.50

3431 .01 .01 .04 .15 .60 1.45 3.75 9.90 14.74 4819 .10 .10 .10 .30 1.00 1.70 3.60 5.60 5.90

3441 -- -- .09 .23 .74 1.23 2.96 -- -- 4852 -- -- -- .30 1.74 3.17 -- -- --

3442 .02 .03 .06 .12 .32 .82 1.73 2.98 3.59 4866 .03 .04 .10 .20 .61 1.40 2.62 4.89 6.15

3446 .03 .04 .07 .15 .40 .86 1.60 2.92 4.85 4876 -- .10 .10 .30 .70 1.68 3.39 9.92 --

3460 -- -- .04 .14 1.09 1.56 2.75 -- -- 4878 .03 .04 .10 .30 .83 1.95 3.86 7.25 8.35

3462 -- .05 .10 .20 .50 .98 1.60 5.70 -- 4880 .02 .03 .08 .13 .39 .90 1.80 3.79 4.67

Appendix 4–4.7. Empirical distribution of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 269

4920 0.03 0.04 0.10 0.15 0.40 1.20 2.29 4.66 5.88 5957 0.03 0.04 0.10 0.20 0.60 1.30 2.38 5.20 6.91

4934 -- -- -- .07 .15 1.02 -- -- -- 5958 .01 .02 .06 .19 .66 1.30 2.46 4.53 4.72

4972 .03 .04 .10 .20 .55 1.20 2.32 4.50 5.41 5973 -- .02 .04 .08 .25 .97 2.61 5.38 --

4973 .04 .06 .13 .38 .79 1.60 3.06 6.48 8.89 5996 .03 .04 .10 .20 .57 1.29 2.38 4.52 5.43

4974 .02 .03 .06 .12 .38 .89 1.88 3.92 6.05 6017 -- .01 .03 .10 .34 1.00 2.30 4.71 --

4975 .10 .10 .10 .30 .80 1.70 3.00 5.80 6.76 6024 .02 .03 .10 .30 .83 2.00 3.46 6.32 10.13

4978 -- .02 .04 .11 .45 1.04 2.70 6.16 -- 6050 -- -- .19 .29 .57 1.45 2.29 -- --

4979 -- -- -- .62 1.85 5.05 -- -- -- 6104 .02 .03 .07 .10 .32 .84 1.75 4.00 5.07

4982 .02 .03 .07 .16 .45 1.11 2.14 4.17 5.38 6108 .03 .06 .10 .30 .80 1.80 3.21 5.90 7.04

5018 .02 .04 .07 .20 .56 1.34 2.31 4.67 7.19 6136 .03 .04 .10 .11 .32 .82 1.60 3.35 3.73

5048 .03 .04 .10 .10 .30 .85 1.55 3.73 5.45 6166 -- .03 .06 .17 .37 .89 1.74 2.88 --

5049 -- .10 .10 .20 .30 .80 1.56 5.16 -- 6176 .02 .03 .11 .30 .63 1.65 3.35 7.10 7.40

5056 -- -- -- -- .67 -- -- -- -- 6177 .04 .05 .10 .30 .80 1.70 3.17 6.33 8.52

5057 .01 .01 .02 .06 .24 .79 1.78 3.66 4.16 6210 .03 .05 .10 .20 .70 1.50 2.80 5.60 6.69

5060 .01 .01 .02 .07 .43 1.09 3.05 8.06 8.82 6211 .01 .02 .07 .23 .83 1.89 3.12 5.47 7.57

5081 .02 .03 .08 .25 .75 1.65 2.96 6.02 6.92 6270 .10 .10 .10 .30 .90 1.80 3.20 6.34 7.42

5094 .02 .03 .10 .20 .63 1.46 2.70 5.55 6.83 6275 -- -- -- -- .00 -- -- -- --

5113 .03 .04 .10 .16 .47 1.20 2.50 5.61 7.46 6276 -- -- -- .19 1.39 4.21 -- -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 .03 .03 .10 .23 .70 1.51 2.75 4.91 5.87

5123 -- -- .07 .22 .49 1.92 2.78 -- -- 6434 -- -- .14 .36 .72 1.17 1.97 -- --

5192 .02 .04 .10 .25 .60 1.50 2.80 5.29 6.32 6504 .02 .03 .10 .10 .36 .90 1.70 4.07 5.10

5193 .03 .04 .10 .20 .60 1.40 2.70 5.22 6.84 6558 -- -- .05 .12 .71 .99 1.90 -- --

5224 .01 .02 .08 .30 .86 2.00 3.77 8.23 9.16 6615 .05 .10 .10 .20 .40 1.00 1.91 5.20 6.40

5228 .02 .03 .06 .16 .64 1.55 2.62 5.27 6.45 6660 -- .03 .08 .25 .59 1.61 2.61 5.20 --

5235 -- -- .05 .15 .54 1.15 3.58 -- -- 6663 -- -- .11 .21 .65 1.74 4.59 -- --

5247 .02 .03 .10 .15 .40 1.00 1.91 3.55 4.28 6734 .01 .02 .06 .15 .41 1.13 1.94 4.47 5.79

5258 .03 .03 .10 .23 .60 1.30 2.50 5.32 7.50 6736 .03 .03 .10 .12 .37 .90 1.78 3.99 4.74

5303 .02 .03 .05 .15 .37 1.19 2.10 5.34 8.90 6740 -- -- .07 .37 1.70 3.46 4.25 -- --

5312 .04 .05 .10 .20 .50 1.20 2.30 5.42 6.51 6750 .01 .01 .03 .12 .38 1.63 3.73 10.04 11.79

5341 -- -- -- .47 .78 7.96 -- -- -- 6757 .01 .02 .10 .21 .70 1.60 3.09 5.54 6.99

5342 -- -- -- -- .00 -- -- -- -- 6775 .01 .02 .05 .12 .35 1.02 1.85 4.20 5.06

5348 .04 .08 .10 .30 .80 1.80 3.40 5.40 5.92 6776 .03 .04 .10 .13 .40 1.00 1.90 4.09 4.87

5358 .02 .03 .07 .15 .41 1.07 1.99 3.98 5.14 6788 .02 .02 .09 .29 .72 1.63 3.31 5.32 5.59

5398 .03 .04 .10 .28 .75 1.60 3.02 6.20 7.19 6792 .02 .03 .10 .10 .30 .70 1.40 3.23 3.95

5410 .02 .03 .09 .10 .37 .90 1.74 3.98 4.58 6794 -- -- -- 1.20 4.96 8.37 -- -- --

5411 .01 .01 .02 .07 .27 .80 1.68 3.54 4.85 6834 .10 .10 .10 .30 .90 1.73 3.25 6.10 7.42

5424 .01 .01 .03 .18 .81 2.01 3.72 8.97 11.20 6893 .03 .04 .10 .10 .27 .60 1.20 2.68 3.21

5429 .02 .02 .06 .16 .50 1.31 2.36 4.88 7.81 6935 .03 .05 .10 .14 .35 .87 1.80 3.63 5.00

5431 -- -- .14 .38 .90 2.24 3.28 -- -- 6981 .01 .02 .10 .24 .61 1.41 2.33 5.75 6.84

5461 .03 .04 .10 .24 .70 1.56 2.85 5.85 6.90 7020 -- .02 .04 .16 .45 1.13 2.61 7.81 --

5463 .10 .10 .10 .20 .70 1.60 2.90 5.50 6.61 7060 .03 .05 .10 .18 .40 1.10 2.10 4.39 5.70

5471 -- -- -- .08 .41 .64 -- -- -- 7066 .03 .04 .10 .25 .80 1.70 3.20 5.67 7.12

5477 -- -- .09 .15 .46 1.42 9.73 -- -- 7074 .02 .03 .06 .10 .30 .80 1.68 3.68 4.68

5528 .03 .04 .10 .26 .69 1.47 2.58 5.11 6.48 7097 -- .02 .11 .20 .65 1.52 3.22 5.61 --

5579 -- -- -- -- .55 -- -- -- -- 7116 .02 .02 .05 .14 .40 1.03 1.81 3.83 5.04

5580 -- -- -- .49 1.81 2.68 -- -- -- 7140 .02 .02 .07 .18 .55 1.61 3.37 7.16 9.31

5589 -- .01 .03 .09 .32 .82 1.34 1.73 -- 7173 .01 .01 .03 .19 .73 2.09 4.14 8.01 10.07

5590 -- .02 .05 .12 .33 .93 1.53 3.81 -- 7174 .01 .01 .04 .19 .77 2.00 3.85 8.18 10.35

5591 .02 .03 .06 .12 .34 .67 1.39 2.83 3.44 7213 .02 .03 .10 .25 .67 1.47 2.69 5.11 5.93

5592 .02 .02 .05 .10 .27 .58 1.25 2.79 4.65 7243 .03 .04 .10 .20 .50 1.20 2.30 4.40 5.50

5594 .02 .03 .06 .10 .25 .61 1.10 2.50 4.12 7262 -- .01 .02 .06 .17 .43 .69 2.22 --

5595 -- -- -- -- .05 -- -- -- -- 7274 .04 .05 .10 .23 .52 1.22 2.00 5.11 5.78

5596 .10 .10 .10 .10 .30 .80 1.70 3.67 4.66 7300 .02 .03 .06 .18 .52 1.16 2.35 4.35 5.80

5600 .02 .03 .05 .12 .30 .73 1.24 3.79 5.13 7311 -- -- .10 .20 .50 1.75 2.09 -- --

5618 -- -- -- .17 1.13 2.52 -- -- -- 7363 -- -- -- .14 .82 3.23 -- -- --

5650 -- -- -- .45 .74 2.19 -- -- -- 7422 .02 .03 .10 .18 .50 1.30 2.50 5.25 6.59

5656 .07 .10 .10 .20 .40 1.01 1.92 4.10 5.51 7431 .03 .03 .07 .10 .30 .78 1.50 3.51 4.47

5658 .02 .03 .05 .13 .36 .85 1.84 4.33 5.34 7481 .02 .03 .05 .10 .23 .60 1.30 3.27 3.81

5661 .10 .10 .10 .17 .50 1.12 2.97 6.92 11.87 7497 .10 .10 .10 .20 .66 1.40 2.70 5.14 7.15

5666 -- -- .04 .10 .30 1.01 3.38 -- -- 7498 .07 .09 .10 .20 .70 1.50 2.42 7.48 9.58

5695 .04 .05 .10 .28 .67 1.41 2.69 5.37 6.85 7499 .05 .08 .10 .20 .50 1.29 2.37 4.56 6.30

5742 -- -- .05 .09 .21 .41 2.79 -- -- 7531 -- .04 .08 .26 .58 1.32 3.18 4.75 --

5766 -- -- -- .69 1.35 6.34 -- -- -- 7534 .03 .03 .06 .18 .52 1.23 2.32 4.17 5.63

5770 .03 .03 .10 .15 .41 1.08 2.08 4.32 5.07 7556 .03 .05 .10 .20 .59 1.30 2.60 5.11 6.78

5775 -- -- -- .05 .69 1.10 -- -- -- 7594 .03 .04 .10 .25 .73 1.68 2.98 6.29 7.48

5779 -- -- .09 .22 .71 1.71 2.75 -- -- 7596 .01 .02 .05 .12 .60 1.64 3.02 4.80 5.54

5840 .02 .03 .05 .19 .47 1.24 2.30 5.91 6.90 7608 .01 .02 .05 .16 .60 1.48 2.59 5.50 6.87

5890 .01 .01 .02 .07 .24 .70 1.43 3.10 3.86 7622 -- -- .01 .01 .10 .53 1.41 -- --

5891 .02 .02 .07 .14 .37 .78 1.53 2.40 3.44 7700 .02 .03 .09 .28 .76 1.70 3.10 6.03 7.80

5897 .10 .10 .10 .20 .70 1.60 2.90 5.40 6.49 7706 .02 .04 .10 .15 .44 1.05 2.10 4.37 6.54

Appendix 4–4.7. Empirical distribution of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
270 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 -- 0.03 0.09 0.21 0.60 1.07 2.68 6.67 -- 8910 -- -- -- 0.07 0.42 2.33 -- -- --

7745 0.01 .02 .08 .24 .83 1.67 3.50 7.25 8.47 8911 0.01 0.02 0.05 .16 .57 1.33 2.61 5.17 5.79

7922 .01 .01 .04 .09 .21 .49 .90 2.22 3.21 8924 .02 .03 .06 .12 .28 .65 1.16 2.06 2.62

7936 .04 .05 .10 .30 .85 1.90 3.30 7.15 8.45 8929 -- -- -- .13 .65 2.02 -- -- --

7943 .01 .01 .02 .07 .28 .86 1.81 3.60 4.72 8942 .05 .08 .10 .30 .80 1.80 3.40 6.10 7.70

7944 -- -- .03 .15 .42 1.36 3.03 -- -- 8944 .02 .02 .06 .20 .66 1.48 3.18 6.30 7.82

7945 .01 .01 .02 .08 .40 1.12 2.44 5.43 7.32 8996 .02 .03 .06 .20 .64 1.57 3.01 6.06 7.53

7947 .05 .05 .10 .30 .70 1.60 3.30 5.64 13.07 9014 -- -- -- .81 1.46 2.26 -- -- --

7948 .02 .02 .05 .12 .45 1.23 2.29 5.00 7.16 9037 .02 .03 .05 .10 .24 .52 1.23 2.47 2.79

7951 .03 .05 .10 .26 .74 1.54 2.79 5.45 6.61 9106 .02 .02 .04 .07 .17 .48 1.00 2.31 8.34

7953 -- .02 .05 .14 .30 .81 2.72 5.00 -- 9107 -- -- .04 .07 .20 .80 1.55 -- --

7981 .02 .02 .06 .13 .41 1.18 2.26 5.00 5.80 9129 -- .02 .04 .07 .28 .80 2.25 3.90 --

7990 -- .02 .04 .10 .43 1.17 3.94 7.23 -- 9163 .03 .04 .09 .20 .50 1.19 2.21 5.00 5.70

7992 -- -- -- 1.15 1.75 4.62 -- -- -- 9213 .01 .01 .03 .16 .56 1.36 2.48 6.05 8.60

7997 -- .02 .04 .13 .38 .91 1.81 4.89 -- 9214 -- -- -- 1.29 2.35 7.64 -- -- --

7999 -- -- .03 .07 .24 .84 1.64 -- -- 9222 .01 .02 .06 .21 .54 1.25 2.45 5.46 6.48

8022 -- -- .05 .10 .26 .98 1.78 -- -- 9248 -- .05 .07 .12 .30 .94 1.56 3.78 --

8023 .04 .05 .10 .13 .35 .90 1.73 3.81 4.70 9266 -- .04 .10 .19 .50 1.11 2.18 2.99 --

8047 .03 .04 .10 .20 .60 1.30 2.40 4.80 6.12 9270 .03 .04 .10 .10 .30 .72 1.54 3.59 3.97

8060 -- .02 .03 .08 .30 1.17 3.21 4.18 -- 9295 -- .01 .02 .04 .14 .51 1.14 2.32 --

8062 -- -- .02 .11 .48 1.30 3.89 -- -- 9304 -- -- -- -- .23 -- -- -- --

8068 -- -- .03 .10 .26 .54 1.53 -- -- 9307 .05 .07 .10 .25 .60 1.15 2.18 3.88 4.10

8081 .03 .04 .08 .15 .43 1.24 2.50 5.87 7.72 9328 .01 .02 .06 .12 .36 .91 2.50 4.15 5.07

8089 -- -- .03 .14 .58 1.10 1.89 -- -- 9329 -- -- -- .16 .37 2.06 -- -- --

8221 -- -- -- .67 1.34 2.21 -- -- -- 9345 -- -- -- -- .75 -- -- -- --

8252 .03 .04 .09 .12 .35 .90 1.69 3.45 4.80 9363 .01 .01 .03 .10 .43 1.32 2.59 5.31 6.18

8265 .03 .03 .08 .23 .71 1.69 3.45 6.72 9.30 9364 .01 .01 .03 .11 .45 1.35 2.80 6.65 9.15

8289 -- -- .14 .27 .65 1.00 1.29 -- -- 9365 -- -- .08 .14 .30 .69 2.36 -- --

8305 .02 .03 .07 .10 .26 .58 1.18 2.60 3.27 9371 -- .04 .07 .18 .74 1.76 2.52 4.18 --

8335 .03 .04 .08 .26 .80 1.69 3.22 5.42 6.71 9417 .02 .02 .07 .18 .60 1.42 2.61 4.90 5.89

8400 .02 .03 .08 .14 .40 .77 1.51 3.77 4.59 9419 .01 .01 .04 .14 .53 1.35 2.41 4.85 6.00

8445 .02 .03 .06 .20 .58 1.55 2.88 6.08 8.49 9435 -- .05 .07 .21 .52 .87 1.64 5.60 --

8446 .02 .04 .10 .20 .60 1.43 2.59 5.16 6.17 9491 .03 .03 .10 .21 .69 1.57 3.00 5.62 6.82

8451 .02 .02 .06 .11 .34 1.02 1.72 4.23 4.70 9499 .03 .04 .10 .14 .40 1.10 2.00 3.70 4.84

8531 .03 .03 .08 .23 .62 1.40 2.49 4.20 6.13 9522 -- -- -- .21 1.28 10.64 -- -- --

8541 -- .03 .08 .18 .49 1.05 2.77 5.45 -- 9527 .04 .05 .10 .12 .36 .90 1.90 3.86 4.59

8544 .05 .05 .10 .20 .59 1.42 2.90 7.20 9.00 9532 .03 .03 .10 .20 .60 1.30 2.40 5.24 6.33

8545 -- -- .04 .24 .54 .63 1.12 -- -- 9544 -- -- -- .10 .24 4.34 -- -- --

8563 .10 .10 .10 .20 .70 1.40 2.60 5.66 7.17 9565 .02 .03 .10 .14 .40 1.09 2.23 4.87 5.38

8566 .02 .03 .06 .14 .40 1.04 2.04 3.51 5.14 9570 .10 .10 .10 .20 .50 1.20 1.95 4.53 5.26

8583 .10 .10 .10 .20 .50 1.20 2.10 4.81 5.70 9574 -- -- .20 .40 .90 1.40 2.54 -- --

8584 .03 .04 .10 .20 .54 1.24 2.37 4.70 5.40 9588 .02 .02 .07 .10 .40 1.10 2.30 4.77 5.64

8623 .05 .08 .10 .20 .60 1.40 2.50 4.38 5.66 9665 .03 .05 .10 .23 .70 1.50 2.77 5.51 6.94

8625 .02 .03 .08 .20 .56 1.25 2.42 4.46 6.83 9715 .02 .03 .10 .20 .60 1.30 2.50 5.06 6.36

8630 .02 .03 .08 .12 .37 .90 1.70 3.49 4.00 9729 .01 .01 .03 .12 .46 1.18 2.28 4.58 5.61

8631 .03 .04 .06 .15 .42 1.01 1.94 4.18 5.16 9772 .02 .03 .05 .15 .54 1.47 3.03 6.67 8.96

8646 .02 .03 .08 .17 .55 1.34 2.47 4.72 6.04 9814 -- -- .04 .17 .82 1.50 2.81 -- --

8647 .03 .04 .10 .11 .35 .90 1.90 3.88 4.82 9815 .03 .05 .10 .23 .61 1.60 2.64 6.35 8.29

8677 .02 .05 .10 .22 .49 1.25 2.19 4.54 5.61 9816 -- .04 .05 .12 .34 1.02 2.58 4.83 --

8696 -- -- -- .23 1.18 4.10 -- -- -- 9817 .04 .06 .10 .20 .50 1.17 2.10 4.65 5.34

8743 .03 .04 .10 .27 .77 1.65 3.24 6.20 7.36 9829 .02 .02 .06 .10 .27 .67 1.40 2.92 3.55

8761 .02 .03 .10 .10 .30 .83 1.70 3.45 4.44 9830 .01 .01 .03 .07 .17 .67 1.12 2.44 3.54

8778 .04 .06 .10 .30 .80 1.60 3.00 5.01 6.29 9858 .02 .03 .06 .14 .39 .95 1.84 3.85 4.57

8845 .03 .04 .10 .20 .53 1.40 2.77 5.96 6.92 9893 .02 .03 .10 .20 .50 1.17 2.24 4.51 5.45

8859 .03 .04 .10 .25 .80 1.66 3.00 5.31 6.41 9916 .03 .05 .10 .30 .88 1.80 3.20 5.35 5.90

8898 .03 .03 .10 .24 .68 1.50 2.91 5.44 7.63 9976 .02 .03 .08 .11 .40 1.01 2.00 4.30 6.23

8908 -- -- .06 .15 1.02 2.03 3.49 -- --

Appendix 4–4.7. Empirical distribution of storm depth defined by 72-hour minimum interevent time for hourly rainfall stations in Texas—

Continued.

Depth

(inches)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 271

Appendix 4–5.1. Empirical distribution of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- 1.00 1.00 5.00 10.00 12.80 -- -- 1154 1.00 1.00 1.00 1.00 1.00 7.00 13.00 25.00 33.10

0016 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 32.00 1165 1.00 1.00 1.00 1.00 3.00 7.00 13.00 28.00 34.00

0050 1.00 1.00 1.00 2.00 4.00 9.00 15.00 27.00 33.80 1185 1.00 1.00 1.00 1.00 2.00 5.00 10.00 23.00 28.00

0054 -- 1.00 1.00 1.00 3.00 5.00 11.70 23.24 -- 1186 1.00 1.00 1.00 1.00 3.00 8.00 14.00 27.84 32.56

0120 -- -- 1.40 3.50 5.00 9.50 16.00 -- -- 1188 -- -- 1.00 1.00 1.00 5.00 24.40 -- --

0145 1.00 1.00 1.00 1.00 1.00 7.00 13.00 24.90 31.00 1245 -- -- 2.00 2.00 5.00 8.00 11.80 -- --

0146 -- 1.00 1.00 2.00 5.50 8.00 12.00 31.40 -- 1246 1.00 1.00 1.00 1.00 2.00 5.00 10.00 18.94 22.00

0174 1.00 1.00 1.00 1.00 1.00 4.00 8.00 16.00 19.57 1267 1.00 1.00 1.00 1.00 3.00 6.00 11.10 25.82 29.41

0178 -- -- 1.00 1.00 2.00 4.00 8.40 -- -- 1304 1.00 1.00 1.00 1.00 3.00 7.00 13.00 23.00 30.00

0179 1.00 1.00 1.00 2.00 2.00 5.00 8.00 14.02 18.02 1325 1.00 1.00 1.00 2.00 4.00 8.00 14.00 26.00 33.00

0202 1.00 1.00 1.00 1.00 1.00 4.00 7.00 14.00 17.00 1429 1.00 1.00 1.00 1.00 3.00 6.00 13.00 24.00 28.76

0206 1.00 1.00 1.00 1.00 2.00 6.00 10.00 21.00 25.00 1431 1.00 1.00 1.00 2.00 4.00 8.00 16.00 30.00 36.00

0208 -- -- -- 1.50 5.00 10.00 -- -- -- 1432 1.00 1.00 1.00 2.00 4.00 8.00 16.00 29.00 38.20

0211 1.00 1.00 1.00 1.00 3.00 7.00 12.00 25.00 30.00 1433 1.00 1.00 1.00 2.00 4.00 8.00 15.00 28.00 34.52

0244 -- 1.00 1.00 2.00 4.50 11.00 18.60 29.78 -- 1434 1.00 1.00 1.00 2.00 4.00 8.00 13.00 28.00 34.20

0248 1.00 1.00 1.00 1.00 2.00 5.00 9.00 19.80 26.00 1435 1.00 1.00 1.00 2.00 3.00 8.00 15.00 27.00 34.00

0262 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.54 29.00 1436 1.00 1.00 1.00 2.00 4.00 8.00 16.00 27.00 33.00

0271 -- -- 1.00 2.00 4.00 7.50 11.00 -- -- 1437 -- -- 1.00 2.00 2.00 4.75 25.00 -- --

0380 1.00 1.00 1.00 2.00 4.00 7.00 13.00 27.08 34.00 1438 1.00 1.00 1.00 2.00 4.00 8.00 15.00 27.00 34.54

0394 -- -- 1.20 3.00 5.00 11.00 31.00 -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- 1.00 1.00 2.00 5.00 10.50 -- -- 1492 1.00 1.00 1.00 1.00 2.00 5.00 9.00 20.00 28.00

0427 -- 1.00 1.00 1.00 1.00 6.50 11.60 16.56 -- 1500 -- -- 1.40 2.00 6.00 9.00 13.00 -- --

0428 1.00 1.00 1.00 1.00 3.00 7.00 14.00 27.00 33.00 1528 1.00 1.00 1.00 1.00 2.00 5.00 10.00 22.00 28.00

0429 1.00 1.00 1.00 1.00 4.00 8.50 15.00 32.24 48.46 1541 -- 1.00 1.00 1.00 2.00 8.25 15.90 21.74 --

0463 1.00 1.00 1.00 1.00 3.00 8.00 13.00 24.76 30.60 1569 1.00 1.00 1.00 1.00 3.00 7.00 13.00 31.20 55.44

0493 -- -- 2.00 3.00 6.00 10.00 12.00 -- -- 1632 -- -- -- 1.00 1.00 1.00 -- -- --

0495 1.00 1.00 1.00 1.00 2.00 5.00 11.00 26.56 32.78 1641 1.00 1.00 1.00 1.00 3.00 6.00 12.00 26.34 36.00

0496 -- -- 1.00 1.00 1.00 1.00 3.20 -- -- 1646 1.00 1.00 1.00 1.00 2.00 4.00 8.30 16.86 22.00

0498 -- -- 1.00 1.00 1.00 1.00 3.80 -- -- 1663 -- 1.00 1.00 1.00 2.00 6.00 14.60 32.68 --

0509 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 31.87 1671 1.00 1.00 1.00 1.00 3.00 6.00 12.00 23.00 29.00

0518 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.92 25.00 1680 1.00 1.00 1.00 2.00 4.00 8.00 15.00 28.58 34.00

0521 -- -- 1.00 2.00 4.00 8.75 11.90 -- -- 1694 1.00 1.00 1.00 1.00 2.00 7.00 12.00 21.08 28.22

0556 1.00 1.00 1.00 2.00 4.00 8.00 12.00 48.44 56.00 1696 1.00 1.00 1.00 1.00 3.00 7.00 13.00 28.44 34.72

0569 1.00 1.00 1.00 1.00 2.00 6.00 12.00 23.00 28.06 1697 -- 1.00 1.00 2.00 3.00 8.00 11.40 25.36 --

0572 1.00 1.00 1.00 2.00 3.00 7.00 12.00 26.00 35.00 1698 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.00 26.86

0576 1.00 1.00 1.00 1.00 3.00 8.00 12.00 36.12 39.95 1720 1.00 1.00 1.00 1.00 1.00 5.00 10.20 20.16 25.52

0580 1.00 1.00 1.00 1.00 3.00 7.00 13.00 28.20 32.20 1761 1.00 1.00 1.00 1.00 1.00 7.00 13.00 20.20 43.00

0587 1.00 1.00 1.00 2.00 4.00 8.00 14.00 29.00 39.00 1773 1.00 1.00 1.00 1.00 3.00 7.00 12.00 24.00 29.00

0605 1.00 1.00 1.00 2.00 4.00 7.00 12.00 25.48 30.72 1810 -- -- 1.00 2.00 4.00 7.00 9.30 -- --

0639 1.00 1.00 1.00 1.00 2.00 5.00 9.00 19.26 24.13 1823 -- -- 1.00 2.00 4.00 6.50 8.40 -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 1.00 1.00 1.00 2.00 5.00 9.00 18.00 32.00 39.90

0665 1.00 1.00 1.00 2.00 3.00 8.00 14.00 27.00 32.00 1875 -- -- 2.00 2.00 4.00 6.00 9.90 -- --

0689 1.00 1.00 1.00 1.00 3.00 7.00 13.00 27.48 37.74 1876 -- 1.00 1.00 2.00 4.00 12.00 19.60 37.72 --

0690 1.00 1.00 1.00 1.00 1.00 4.00 8.00 15.00 22.00 1889 1.00 1.00 1.00 1.00 3.00 7.00 13.00 30.48 35.24

0691 1.00 1.00 1.00 2.00 3.00 7.00 12.00 24.00 28.00 1903 1.00 1.00 1.00 1.00 1.00 4.00 8.00 14.02 17.01

0708 1.00 1.00 1.00 1.00 1.00 4.00 8.40 20.40 27.72 1914 -- -- 2.00 3.00 5.00 8.00 13.20 -- --

0738 1.00 1.00 1.00 2.00 4.00 8.00 14.00 27.00 33.00 1920 1.00 1.00 1.00 2.00 3.00 7.00 12.00 25.98 34.83

0776 1.00 1.00 1.00 1.00 2.00 5.00 10.00 21.30 29.00 1921 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 29.00

0779 1.00 1.00 1.00 1.00 1.00 4.00 8.00 18.18 23.09 1937 1.00 1.00 1.00 2.00 4.00 9.00 16.00 28.00 37.15

0784 1.00 1.00 1.00 1.00 2.00 5.00 9.00 18.00 23.02 1956 1.00 1.00 1.00 1.00 3.00 7.00 12.00 24.00 29.00

0786 1.00 1.00 1.00 1.00 3.00 7.00 12.30 21.00 29.00 1970 -- -- 1.00 2.00 5.00 8.00 12.80 -- --

0917 1.00 1.00 1.00 2.00 4.00 8.00 15.00 28.00 37.43 2014 1.00 1.00 1.00 1.00 3.00 6.00 12.00 23.50 28.25

0923 -- -- 1.00 2.00 4.50 11.00 21.10 -- -- 2015 1.00 1.00 1.00 1.00 3.00 7.00 13.00 27.00 36.00

0926 1.00 1.00 1.00 1.00 3.00 7.00 12.00 25.00 29.39 2019 -- -- 1.00 2.00 3.00 8.25 10.00 -- --

0950 -- -- 1.00 2.00 2.00 3.00 5.20 -- -- 2024 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.12 29.56

0996 -- -- 1.30 3.00 4.00 7.75 10.00 -- -- 2042 -- -- 1.00 1.00 1.00 3.25 7.00 -- --

1013 1.00 1.00 1.00 1.00 1.00 4.00 7.90 15.00 24.47 2043 1.00 1.00 1.00 1.00 1.00 4.00 7.00 14.00 14.00

1017 1.00 1.00 1.00 1.00 3.00 6.00 11.00 22.00 27.60 2048 1.00 1.00 1.00 1.00 2.00 5.00 11.00 22.00 27.00

1042 -- -- 2.80 3.00 5.00 11.00 17.40 -- -- 2050 -- 1.00 1.00 1.00 1.00 7.00 13.00 28.84 --

1048 -- -- 1.00 2.00 3.00 5.00 7.60 -- -- 2051 -- 1.00 1.00 2.00 3.00 5.25 10.00 27.90 --

1053 1.00 1.00 1.00 2.00 3.00 7.00 13.00 22.30 34.65 2053 -- -- 1.00 1.00 2.00 6.00 9.40 -- --

1057 1.00 1.00 1.00 2.00 4.00 7.00 12.00 23.00 28.18 2073 1.00 1.00 1.00 2.00 3.00 7.00 12.00 25.00 29.00

1063 -- -- 2.00 2.00 5.00 8.00 11.00 -- -- 2082 1.00 1.00 1.00 1.00 2.00 5.00 9.00 18.98 25.00

1068 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 33.00 2086 1.00 1.00 1.00 1.00 3.00 7.00 12.00 23.00 28.00

1080 1.00 1.00 1.00 1.00 1.00 4.00 8.00 13.68 24.00 2088 -- 1.00 1.00 1.00 3.00 7.00 10.00 26.72 --

1081 1.00 1.00 1.00 2.00 4.00 8.00 15.00 26.00 31.92 2090 1.00 1.00 1.00 1.00 2.00 5.00 9.10 20.00 24.03

1133 -- -- 1.00 1.00 3.00 11.00 25.00 -- -- 2096 1.00 1.00 1.00 1.00 3.00 7.00 13.00 23.00 27.00

1136 1.00 1.00 1.00 1.00 2.00 6.00 12.00 27.00 34.00 2128 1.00 1.00 1.00 2.00 4.00 8.00 14.00 28.00 32.14

1138 -- -- 1.40 3.00 3.00 6.00 8.60 -- -- 2131 1.00 1.00 1.00 1.00 2.00 5.00 10.00 18.66 23.83

1139 1.00 1.00 1.00 1.00 4.00 10.00 16.50 51.70 71.05 2142 -- -- 1.00 2.00 5.00 9.25 21.60 -- --

Appendix 4–5.1. Empirical distribution of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
272 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 1.00 1.00 7.00 13.00 25.00 -- -- 3463 -- 1.00 1.00 1.00 3.00 9.00 20.00 29.00 --

2206 1.00 1.00 1.00 2.00 3.00 7.00 12.00 26.70 30.70 3476 1.00 1.00 1.00 2.00 3.00 7.00 13.00 26.00 33.00

2238 1.00 1.00 1.00 1.00 3.00 6.00 12.00 26.56 32.07 3485 -- -- 1.60 2.00 6.00 7.00 11.40 -- --

2240 1.00 1.00 1.00 1.00 1.00 7.00 13.00 19.00 19.00 3507 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.62 26.00

2242 1.00 1.00 1.00 2.00 3.00 8.00 13.00 25.48 33.00 3546 1.00 1.00 1.00 1.00 3.00 7.00 13.00 26.00 29.73

2244 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 30.00 3547 1.00 1.00 1.00 1.00 3.00 7.00 11.00 25.36 28.00

2247 -- 1.00 1.00 2.00 4.00 7.00 11.50 20.60 -- 3579 -- 1.00 1.00 2.00 4.00 9.00 15.00 37.40 --

2309 1.00 1.00 1.00 2.00 4.00 9.00 14.00 25.00 28.00 3642 1.00 1.00 1.00 1.00 3.00 7.00 13.00 23.00 27.00

2312 1.00 1.00 1.00 1.00 2.00 6.00 11.00 19.94 21.97 3646 1.00 1.00 1.00 2.00 4.00 8.00 14.00 26.00 31.00

2334 -- 1.00 1.00 1.00 3.50 9.00 17.30 27.30 -- 3668 -- -- 2.00 4.00 6.50 11.50 17.20 -- --

2336 1.00 1.00 1.00 1.00 3.00 6.00 11.00 20.00 32.00 3673 -- -- 1.00 1.75 3.50 8.00 13.20 -- --

2354 -- -- 1.00 1.00 3.00 6.50 13.70 -- -- 3686 1.00 1.00 1.00 1.00 2.00 6.00 10.00 19.00 23.75

2355 -- 1.00 1.00 2.00 4.00 7.75 19.00 26.70 -- 3691 1.00 1.00 1.00 1.00 2.00 6.00 11.00 20.00 25.00

2357 1.00 1.00 1.00 1.00 3.00 7.00 15.00 28.00 35.00 3734 -- -- 1.00 2.00 3.50 8.00 10.60 -- --

2360 1.00 1.00 1.00 1.00 2.50 6.00 12.00 23.00 31.62 3771 1.00 1.00 1.00 1.00 2.00 5.00 10.00 19.40 24.00

2361 1.00 1.00 1.00 1.00 2.00 4.75 9.70 17.22 27.22 3789 1.00 1.00 1.00 1.00 1.00 7.00 13.00 23.32 40.48

2394 1.00 1.00 1.00 2.00 4.00 8.00 14.00 25.00 32.00 3826 1.00 1.00 1.00 2.00 4.00 9.00 13.00 20.36 24.18

2404 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 31.00 3831 1.00 1.00 1.00 2.00 3.00 7.75 13.30 25.00 35.15

2415 1.00 1.00 1.00 2.00 4.00 8.00 14.00 27.00 33.00 3841 1.00 1.00 1.00 1.00 3.00 6.00 10.00 20.60 31.10

2462 1.00 1.00 1.00 1.00 3.00 8.00 14.00 24.00 29.00 3871 1.00 1.00 1.00 2.00 4.00 7.25 13.00 25.00 32.00

2528 1.00 1.00 1.00 1.00 4.00 8.00 14.00 45.60 54.50 3884 -- -- 1.40 3.00 5.00 7.00 10.20 -- --

2617 1.00 1.00 1.00 2.00 4.00 8.00 15.30 28.92 36.68 3941 -- 1.00 1.00 1.00 5.00 10.00 19.00 30.40 --

2619 1.00 1.00 1.00 1.00 4.00 7.00 12.00 25.00 33.00 3963 -- -- -- 1.00 1.00 1.00 -- -- --

2621 1.00 1.00 1.00 1.00 3.00 6.00 12.00 23.80 30.40 4040 1.00 1.00 1.00 2.00 3.50 7.00 12.00 27.00 31.00

2675 1.00 1.00 1.00 1.00 3.00 6.00 12.00 21.64 27.32 4058 -- -- 1.00 1.75 3.00 5.00 9.90 -- --

2676 1.00 1.00 1.00 1.00 1.00 5.00 9.00 18.00 23.00 4098 1.00 1.00 1.00 1.00 2.00 4.00 8.00 16.00 19.67

2679 1.00 1.00 1.00 1.00 2.00 6.00 10.00 20.26 26.13 4100 1.00 1.00 1.00 1.00 3.00 6.00 11.00 24.00 27.00

2715 1.00 1.00 1.00 2.00 3.00 7.00 13.00 25.00 31.00 4137 1.00 1.00 1.00 1.00 2.00 5.00 9.00 17.26 21.63

2744 1.00 1.00 1.00 1.00 3.00 6.00 11.00 23.38 31.00 4191 1.00 1.00 1.00 1.00 3.00 6.00 11.00 23.00 30.00

2758 1.00 1.00 1.00 1.00 3.00 7.00 16.40 33.96 56.92 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- 1.00 1.00 3.00 7.00 24.80 -- -- 4257 1.00 1.00 1.00 1.00 3.00 6.00 12.00 24.00 29.00

2797 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.00 26.00 4258 1.00 1.00 1.00 1.00 2.00 6.00 10.00 18.56 23.34

2811 1.00 1.00 1.00 1.00 2.00 5.00 11.00 21.00 28.00 4278 1.00 1.00 1.00 2.00 3.00 7.00 13.00 25.00 32.00

2813 -- -- 1.00 1.00 2.50 5.00 9.70 -- -- 4299 1.00 1.00 1.00 1.00 2.00 5.00 9.40 17.56 19.00

2814 -- -- 1.00 1.00 1.00 4.00 18.00 -- -- 4300 1.00 1.00 1.00 1.00 3.00 7.00 13.00 27.00 34.27

2815 1.00 1.00 1.00 1.00 2.00 4.00 8.00 17.00 19.16 4305 1.00 1.00 1.00 1.00 3.00 7.00 13.00 27.00 35.00

2818 1.00 1.00 1.00 1.00 3.00 7.00 12.00 26.60 37.00 4307 1.00 1.00 1.00 1.00 3.00 7.00 13.00 30.58 33.29

2986 1.00 1.00 1.00 2.00 4.00 9.00 16.00 25.00 31.08 4309 1.00 1.00 1.00 2.00 3.00 7.00 13.00 25.00 31.57

3005 1.00 1.00 1.00 1.00 3.00 6.00 12.00 23.00 29.00 4311 1.00 1.00 1.00 2.00 3.00 8.00 13.00 26.00 32.00

3033 1.00 1.00 1.00 2.00 3.00 5.00 9.00 17.00 21.99 4313 1.00 1.00 1.00 1.00 3.00 7.00 15.00 27.64 38.15

3034 -- -- -- -- 1.00 -- -- -- -- 4319 1.00 1.00 1.00 2.00 4.00 7.75 13.10 31.10 32.91

3047 -- -- 1.00 2.00 4.00 8.00 12.90 -- -- 4329 1.00 1.00 1.00 2.00 3.00 8.00 14.00 27.68 32.00

3103 -- -- 1.00 1.00 2.00 5.50 10.40 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 1.00 1.00 1.00 1.00 4.00 8.00 13.00 26.46 33.00 4375 1.00 1.00 1.00 1.00 1.00 5.00 8.70 17.00 20.07

3156 1.00 1.00 1.00 1.00 3.00 6.00 14.00 29.24 32.24 4392 1.00 1.00 1.00 2.00 4.00 9.00 17.00 31.00 37.00

3171 1.00 1.00 1.00 2.00 4.00 8.00 14.00 26.00 33.00 4425 1.00 1.00 1.00 1.00 1.00 4.00 8.80 17.00 24.18

3189 1.00 1.00 1.00 1.00 2.00 5.00 10.00 19.02 23.01 4440 1.00 1.00 1.00 2.00 4.00 8.00 14.00 28.10 32.00

3260 1.00 1.00 1.00 1.00 3.00 7.00 13.00 23.22 26.55 4476 1.00 1.00 1.00 1.00 2.00 6.00 10.00 20.00 24.90

3267 1.00 1.00 1.00 2.00 3.00 7.00 15.00 29.40 37.40 4498 -- -- 1.00 1.00 2.00 3.25 4.50 -- --

3270 1.00 1.00 1.00 1.00 1.00 4.00 8.00 16.00 20.19 4517 1.00 1.00 1.00 2.00 4.00 8.00 13.00 26.00 30.00

3272 -- -- 1.00 1.00 1.00 3.00 6.00 -- -- 4520 1.00 1.00 1.00 1.00 1.00 5.00 9.00 17.00 22.00

3277 -- -- 1.00 1.00 1.00 7.00 18.40 -- -- 4525 -- -- 1.60 2.00 4.00 8.00 16.40 -- --

3278 1.00 1.00 1.00 1.00 2.00 5.00 9.00 20.00 28.98 4563 -- -- 1.00 2.00 4.00 8.00 15.80 -- --

3280 1.00 1.00 1.00 1.00 3.00 5.00 8.80 23.12 34.52 4570 1.00 1.00 1.00 1.00 2.00 6.00 11.00 23.00 29.66

3281 -- -- 1.00 1.00 2.00 3.00 8.00 -- -- 4577 1.00 1.00 1.00 1.00 3.00 7.00 12.00 25.00 32.64

3283 1.00 1.00 1.00 2.00 4.00 8.00 15.00 29.00 35.00 4591 1.00 1.00 1.00 2.00 4.00 9.00 15.00 27.54 32.77

3284 1.00 1.00 1.00 1.00 3.00 6.00 11.00 22.00 26.70 4670 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.00 25.00

3285 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.00 23.72 4671 1.00 1.00 1.00 1.00 1.00 7.00 13.00 19.00 25.00

3329 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 33.00 4679 1.00 1.00 1.00 1.00 2.00 6.00 11.00 20.00 27.00

3335 1.00 1.00 1.00 1.00 4.00 9.00 15.20 25.16 37.56 4696 -- -- 1.00 1.00 3.00 6.00 8.20 -- --

3370 1.00 1.00 1.00 2.00 4.00 8.00 14.00 26.28 31.00 4703 1.00 1.00 1.00 1.00 2.00 5.00 12.00 27.50 35.55

3410 1.00 1.00 1.00 1.00 2.00 6.00 10.00 19.76 25.00 4704 1.00 1.00 1.00 1.00 3.00 9.00 16.00 29.00 33.78

3415 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 24.00 4731 1.00 1.00 1.00 1.00 3.00 8.00 15.00 32.00 32.53

3430 1.00 1.00 1.00 1.00 3.00 7.00 12.20 26.00 31.00 4792 1.00 1.00 1.00 1.00 2.00 5.00 9.00 18.00 21.97

3431 1.00 1.00 1.00 1.00 1.00 7.00 13.00 20.72 30.16 4819 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 24.12

3441 -- -- 1.00 1.00 3.00 8.50 13.00 -- -- 4852 -- -- 1.00 1.00 1.00 2.50 8.60 -- --

3442 1.00 1.00 1.00 2.00 4.00 7.00 12.00 19.70 32.40 4866 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.32 32.00

3446 1.00 1.00 1.00 1.00 3.00 6.00 10.00 22.56 28.78 4876 1.00 1.00 1.00 1.00 2.00 6.00 10.40 22.88 26.64

3460 -- -- 1.00 2.00 3.00 6.00 11.20 -- -- 4878 1.00 1.00 1.00 2.00 4.00 8.00 14.00 27.00 34.00

3462 1.00 1.00 1.00 1.00 3.00 7.00 14.00 22.72 24.08 4880 1.00 1.00 1.00 1.00 3.00 6.00 11.00 22.00 27.76

Appendix 4–5.1. Empirical distribution of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 273

4920 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.00 27.00 5957 1.00 1.00 1.00 1.00 2.00 6.00 10.00 21.66 27.00

4934 -- -- -- 1.00 2.00 3.50 -- -- -- 5958 1.00 1.00 1.00 2.00 3.00 6.00 13.00 19.34 23.34

4972 1.00 1.00 1.00 1.00 3.00 6.00 11.00 22.12 29.00 5973 1.00 1.00 1.00 2.00 4.00 7.00 13.40 44.76 55.44

4973 1.00 1.00 1.00 2.00 4.00 8.50 14.00 25.00 29.00 5996 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 29.00

4974 1.00 1.00 1.00 1.00 3.00 6.00 10.00 21.00 24.16 6017 1.00 1.00 1.00 1.00 3.00 6.00 11.00 18.96 23.36

4975 1.00 1.00 1.00 1.00 2.00 6.00 11.00 20.00 26.46 6024 1.00 1.00 1.00 1.25 4.00 8.00 17.00 34.48 46.21

4978 1.00 1.00 1.00 1.00 2.00 6.00 10.00 24.40 30.10 6050 -- -- 1.00 2.00 5.00 10.00 13.00 -- --

4979 -- -- 1.50 3.00 6.50 13.50 26.50 -- -- 6104 1.00 1.00 1.00 1.00 2.00 4.00 8.00 17.14 24.00

4982 1.00 1.00 1.00 2.00 3.00 7.00 12.00 24.00 29.25 6108 1.00 1.00 1.00 1.00 3.00 7.00 12.00 24.00 29.94

5018 1.00 1.00 1.00 2.00 4.00 7.00 13.00 22.00 32.00 6136 1.00 1.00 1.00 1.00 2.00 4.00 8.00 16.00 20.00

5048 1.00 1.00 1.00 1.00 2.00 5.00 9.00 20.00 26.00 6166 1.00 1.00 1.00 1.75 3.00 6.00 10.00 21.00 27.51

5049 1.00 1.00 1.00 1.00 1.00 4.00 7.00 11.80 12.00 6176 1.00 1.00 1.00 2.00 3.00 9.00 16.00 28.04 38.51

5056 -- -- -- 1.00 4.00 12.50 -- -- -- 6177 1.00 1.00 1.00 1.00 3.00 7.00 12.00 25.00 31.00

5057 1.00 1.00 1.00 1.00 2.00 6.00 13.00 28.00 37.00 6210 1.00 1.00 1.00 1.00 3.00 6.00 12.00 22.00 27.00

5060 1.00 1.00 1.00 2.00 3.00 7.00 13.00 36.68 50.26 6211 1.00 1.00 1.00 1.00 2.00 6.00 12.00 24.70 34.00

5081 1.00 1.00 1.00 2.00 4.00 9.00 16.00 28.16 32.08 6270 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 28.00

5094 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 26.00 6275 -- -- -- -- .00 -- -- -- --

5113 1.00 1.00 1.00 1.00 2.00 6.00 12.00 23.00 28.00 6276 -- -- 1.00 3.00 5.00 10.00 17.00 -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 1.00 1.00 1.00 2.00 4.00 8.00 14.00 26.00 31.00

5123 -- -- 1.00 1.50 3.00 5.50 13.00 -- -- 6434 -- -- 1.00 2.00 5.00 8.00 18.40 -- --

5192 1.00 1.00 1.00 1.00 3.00 7.00 13.00 23.52 29.00 6504 1.00 1.00 1.00 1.00 2.00 5.00 9.00 19.00 24.49

5193 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 29.85 6558 -- -- 1.00 2.00 4.50 9.00 13.00 -- --

5224 1.00 1.00 1.00 1.00 4.00 8.00 13.00 22.68 27.68 6615 1.00 1.00 1.00 1.00 1.00 4.00 8.00 16.00 21.46

5228 1.00 1.00 1.00 1.00 3.00 7.00 12.00 28.62 35.00 6660 1.00 1.00 1.00 2.00 4.00 8.00 13.00 32.76 43.34

5235 -- -- 1.00 2.00 4.00 11.00 19.40 -- -- 6663 1.00 1.00 1.00 1.00 1.00 4.00 10.00 18.80 28.00

5247 1.00 1.00 1.00 1.00 2.00 5.00 9.00 19.94 26.00 6734 1.00 1.00 1.00 1.00 3.00 7.00 13.00 20.48 25.86

5258 1.00 1.00 1.00 2.00 4.00 8.00 14.00 28.78 35.89 6736 1.00 1.00 1.00 1.00 2.00 5.00 9.00 20.00 27.00

5303 1.00 1.00 1.00 2.00 3.00 7.00 13.00 23.00 27.00 6740 -- -- 1.20 2.50 7.00 12.50 21.60 -- --

5312 1.00 1.00 1.00 1.00 2.00 5.00 9.00 19.00 24.86 6750 1.00 1.00 1.00 1.00 1.00 7.00 13.00 28.08 43.00

5341 -- -- 1.00 2.00 4.00 6.50 18.80 -- -- 6757 1.00 1.00 1.00 1.00 3.00 7.00 13.00 26.00 31.00

5342 -- -- -- -- .00 -- -- -- -- 6775 1.00 1.00 1.00 1.00 3.00 7.00 13.00 27.40 35.00

5348 1.00 1.00 1.00 1.00 3.00 6.00 11.30 23.00 25.23 6776 1.00 1.00 1.00 1.00 2.00 5.00 9.80 21.00 26.00

5358 1.00 1.00 1.00 1.50 3.00 6.00 10.00 21.00 28.00 6788 1.00 1.00 1.00 2.00 4.00 7.00 12.70 18.00 25.82

5398 1.00 1.00 1.00 2.00 4.00 8.00 15.00 27.00 35.00 6792 1.00 1.00 1.00 1.00 2.00 4.00 7.00 16.00 19.87

5410 1.00 1.00 1.00 1.00 2.00 5.00 9.00 20.00 26.17 6794 -- -- 1.00 3.00 6.50 11.50 19.90 -- --

5411 1.00 1.00 1.00 1.00 3.00 6.00 12.00 25.00 30.14 6834 1.00 1.00 1.00 1.00 2.00 6.00 11.00 20.08 25.00

5424 1.00 1.00 1.00 1.00 3.00 7.00 15.60 34.12 41.24 6893 1.00 1.00 1.00 1.00 2.00 4.00 8.00 16.00 20.85

5429 1.00 1.00 1.00 1.00 3.00 6.00 12.00 24.54 29.27 6935 1.00 1.00 1.00 1.00 2.00 4.00 8.00 16.00 20.00

5431 -- -- 1.00 3.75 10.00 15.25 23.50 -- -- 6981 1.00 1.00 1.00 2.00 3.00 7.00 13.00 27.32 34.83

5461 1.00 1.00 1.00 2.00 4.00 9.00 15.00 30.00 37.00 7020 1.00 1.00 1.00 2.00 4.00 11.00 19.00 29.80 38.40

5463 1.00 1.00 1.00 1.00 2.00 5.00 10.00 21.48 24.00 7060 1.00 1.00 1.00 1.00 2.00 5.00 9.00 18.00 22.12

5471 -- -- 1.00 1.00 1.00 1.75 4.10 -- -- 7066 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.28 31.92

5477 -- -- 1.00 1.00 2.50 7.00 17.30 -- -- 7074 1.00 1.00 1.00 1.00 2.00 5.00 9.00 18.00 23.00

5528 1.00 1.00 1.00 2.00 3.00 7.00 13.00 25.00 29.00 7097 1.00 1.00 1.00 2.00 3.00 7.00 12.00 24.88 30.00

5579 -- -- -- -- 4.00 -- -- -- -- 7116 1.00 1.00 1.00 2.00 3.00 6.00 12.00 23.00 34.00

5580 -- -- 1.00 2.00 4.00 5.50 13.00 -- -- 7140 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.24 31.00

5589 1.00 1.00 1.00 1.00 2.00 4.00 8.00 13.40 19.10 7173 1.00 1.00 1.00 1.00 3.00 7.00 14.00 29.00 34.08

5590 1.00 1.00 1.00 1.00 2.50 5.00 12.50 26.30 35.40 7174 1.00 1.00 1.00 1.00 3.00 7.00 13.00 26.10 33.05

5591 1.00 1.00 1.00 1.00 2.00 5.00 8.00 18.00 20.00 7213 1.00 1.00 1.00 2.00 3.00 8.00 14.00 28.00 35.00

5592 1.00 1.00 1.00 2.00 3.00 5.00 9.00 16.74 20.87 7243 1.00 1.00 1.00 1.00 2.00 5.00 11.00 23.00 29.00

5594 1.00 1.00 1.00 1.00 2.00 4.00 7.00 17.00 21.00 7262 1.00 1.00 1.00 1.00 1.00 1.00 7.00 19.00 30.16

5595 -- -- -- -- 1.50 -- -- -- -- 7274 1.00 1.00 1.00 1.00 3.00 7.00 11.00 22.56 27.56

5596 1.00 1.00 1.00 1.00 1.00 3.00 6.00 14.00 15.00 7300 1.00 1.00 1.00 2.00 3.00 7.00 12.00 22.00 27.35

5600 1.00 1.00 1.00 2.00 3.00 5.00 11.00 25.64 31.56 7311 -- -- 1.00 1.00 3.00 6.75 9.70 -- --

5618 -- -- 2.00 2.00 4.00 8.50 12.40 -- -- 7363 -- -- 1.00 2.00 4.00 9.75 16.20 -- --

5650 -- -- 1.30 2.00 3.00 6.25 10.40 -- -- 7422 1.00 1.00 1.00 1.00 2.00 6.00 12.00 24.00 29.00

5656 1.00 1.00 1.00 1.00 1.00 4.00 8.00 17.72 23.00 7431 1.00 1.00 1.00 1.00 2.00 5.00 11.00 23.00 31.61

5658 1.00 1.00 1.00 2.00 3.00 7.00 12.00 28.16 36.04 7481 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.00 23.00

5661 1.00 1.00 1.00 1.00 1.00 5.00 10.00 21.00 30.60 7497 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.00 26.00

5666 -- -- 1.00 1.75 3.00 8.25 11.00 -- -- 7498 1.00 1.00 1.00 1.00 2.00 5.00 10.00 24.28 27.00

5695 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 28.93 7499 1.00 1.00 1.00 1.00 2.00 6.00 10.00 19.00 24.00

5742 -- -- 1.00 1.00 5.00 8.00 11.60 -- -- 7531 1.00 1.00 1.00 2.00 3.00 9.00 15.40 32.36 38.76

5766 -- -- 1.00 2.00 3.00 9.00 11.80 -- -- 7534 1.00 1.00 1.00 1.00 3.00 7.00 12.70 26.00 32.74

5770 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 27.00 7556 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.00 25.00

5775 -- -- 1.00 1.00 3.00 7.25 16.50 -- -- 7594 1.00 1.00 1.00 2.00 3.00 7.00 13.00 26.00 31.29

5779 -- -- 1.00 1.00 5.00 9.00 11.80 -- -- 7596 1.00 1.00 1.00 2.00 3.00 7.00 13.00 35.44 54.20

5840 1.00 1.00 1.00 2.00 4.00 8.00 15.00 28.40 36.00 7608 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 29.34

5890 1.00 1.00 1.00 1.00 3.00 6.00 11.00 24.00 31.00 7622 -- -- 1.00 1.00 2.00 5.00 14.60 -- --

5891 1.00 1.00 1.00 1.00 3.00 5.00 10.80 24.00 25.36 7700 1.00 1.00 1.00 2.00 4.00 8.00 15.00 28.00 34.36

5897 1.00 1.00 1.00 1.00 2.00 5.00 10.00 19.00 24.00 7706 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.00 24.72

Appendix 4–5.1. Empirical distribution of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
274 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 1.00 1.00 1.00 1.00 4.00 8.00 13.00 34.44 39.81 8910 -- -- 1.40 2.00 4.00 5.00 9.20 -- --

7745 1.00 1.00 1.00 2.00 5.00 10.00 16.90 31.38 46.76 8911 1.00 1.00 1.00 1.00 3.00 6.00 12.00 22.00 25.95

7922 1.00 1.00 1.00 1.00 2.00 5.00 10.00 19.02 21.51 8924 1.00 1.00 1.00 1.00 2.00 4.00 8.00 15.44 23.32

7936 1.00 1.00 1.00 1.00 3.00 6.00 12.00 23.00 28.00 8929 -- -- 1.00 1.00 3.00 8.00 17.00 -- --

7943 1.00 1.00 1.00 1.00 3.00 6.00 11.00 23.00 31.00 8942 1.00 1.00 1.00 1.00 2.00 7.00 12.00 23.38 28.00

7944 -- 1.00 1.00 1.00 3.00 8.00 14.00 26.12 -- 8944 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.52 30.00

7945 1.00 1.00 1.00 1.00 3.00 7.00 14.00 28.00 35.00 8996 1.00 1.00 1.00 2.00 3.00 7.00 13.00 26.00 33.00

7947 1.00 1.00 1.00 1.00 2.00 6.00 10.00 25.18 44.24 9014 -- -- 1.60 3.00 6.00 9.00 15.60 -- --

7948 1.00 1.00 1.00 1.00 3.00 6.00 12.00 25.00 29.85 9037 1.00 1.00 1.00 1.00 3.00 6.00 11.00 23.00 31.00

7951 1.00 1.00 1.00 2.00 4.00 8.00 14.00 26.00 33.00 9106 1.00 1.00 1.00 1.00 3.00 5.00 10.00 21.20 35.90

7953 1.00 1.00 1.00 2.00 3.00 7.00 12.80 37.00 38.16 9107 -- -- 1.00 1.00 1.00 3.00 8.80 -- --

7981 1.00 1.00 1.00 1.00 3.00 7.00 12.00 25.78 31.39 9129 1.00 1.00 1.00 1.00 3.00 6.00 11.00 28.80 32.10

7990 1.00 1.00 1.00 1.00 3.00 7.00 13.00 30.30 39.01 9163 1.00 1.00 1.00 1.00 3.00 6.00 12.00 24.00 29.00

7992 -- -- 1.90 3.00 4.50 7.75 11.10 -- -- 9213 1.00 1.00 1.00 1.00 1.00 7.00 13.00 25.00 31.84

7997 1.00 1.00 1.00 2.00 3.00 6.00 10.80 19.16 26.40 9214 -- -- 1.60 2.00 4.00 6.00 15.40 -- --

7999 -- -- 1.00 1.00 2.00 7.00 13.60 -- -- 9222 1.00 1.00 1.00 1.00 3.00 9.00 15.00 28.68 33.00

8022 -- 1.00 1.00 1.00 3.00 6.25 13.00 37.04 -- 9248 1.00 1.00 1.00 1.00 3.00 7.00 17.00 31.24 34.12

8023 1.00 1.00 1.00 1.00 2.00 5.00 10.00 23.00 29.00 9266 -- 1.00 1.00 2.00 4.00 8.25 14.00 31.26 --

8047 1.00 1.00 1.00 1.00 3.00 6.00 11.00 23.00 29.00 9270 1.00 1.00 1.00 1.00 2.00 4.00 7.00 15.00 18.00

8060 1.00 1.00 1.00 1.00 3.00 7.00 13.00 30.00 35.80 9295 1.00 1.00 1.00 1.00 1.00 7.00 7.00 25.00 29.98

8062 -- -- 1.00 2.00 4.00 10.00 14.60 -- -- 9304 -- -- -- 1.50 4.00 5.75 -- -- --

8068 -- -- 1.00 1.00 2.00 6.00 10.60 -- -- 9307 1.00 1.00 1.00 1.00 3.00 6.75 12.00 26.56 31.21

8081 1.00 1.00 1.00 1.00 3.00 6.00 12.00 26.00 31.00 9328 1.00 1.00 1.00 1.00 3.00 6.00 14.00 35.10 45.17

8089 -- -- 1.00 1.00 4.00 6.25 13.00 -- -- 9329 -- -- 1.00 1.00 5.00 11.50 28.30 -- --

8221 -- -- 1.00 3.00 6.00 10.00 19.00 -- -- 9345 -- -- -- -- 8.00 -- -- -- --

8252 1.00 1.00 1.00 1.00 2.00 5.00 10.00 23.00 30.00 9363 1.00 1.00 1.00 1.00 3.00 7.00 12.00 23.00 29.70

8265 1.00 1.00 1.00 2.00 4.00 8.00 16.00 31.00 37.11 9364 1.00 1.00 1.00 1.00 3.00 6.00 12.00 27.00 33.51

8289 -- 1.00 1.00 1.00 3.00 7.00 12.00 30.04 -- 9365 -- -- 1.00 1.00 3.50 5.00 11.90 -- --

8305 1.00 1.00 1.00 1.00 2.00 4.00 8.00 15.00 19.00 9371 1.00 1.00 1.00 2.00 3.50 8.75 13.70 28.16 31.54

8335 1.00 1.00 1.00 2.00 4.00 9.00 16.00 30.00 38.00 9417 1.00 1.00 1.00 2.00 3.00 7.00 13.00 25.00 32.21

8400 1.00 1.00 1.00 1.00 2.00 4.00 8.00 20.46 26.23 9419 1.00 1.00 1.00 1.00 3.00 7.00 14.00 28.00 34.00

8445 1.00 1.00 1.00 2.00 4.00 8.00 15.00 30.00 35.00 9435 -- 1.00 1.00 1.00 3.00 6.00 12.40 39.76 --

8446 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.00 25.13 9491 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 29.00

8451 1.00 1.00 1.00 2.00 3.00 7.00 13.00 20.00 26.91 9499 1.00 1.00 1.00 1.00 2.00 5.00 9.30 20.00 27.00

8531 1.00 1.00 1.00 2.00 4.00 8.00 14.00 27.00 34.00 9522 -- -- 2.00 3.00 5.00 10.00 16.00 -- --

8541 1.00 1.00 1.00 2.00 4.00 7.00 11.70 21.00 24.85 9527 1.00 1.00 1.00 1.00 2.00 4.00 8.00 18.00 23.00

8544 1.00 1.00 1.00 1.00 3.00 7.00 14.00 26.00 30.00 9532 1.00 1.00 1.00 1.00 3.00 6.00 11.00 22.00 30.00

8545 -- -- 1.00 1.00 4.00 10.00 19.80 -- -- 9544 -- -- -- 1.00 1.00 6.00 -- -- --

8563 1.00 1.00 1.00 1.00 2.00 6.00 9.00 19.78 21.39 9565 1.00 1.00 1.00 1.00 2.00 6.00 10.00 19.00 23.17

8566 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.00 26.61 9570 1.00 1.00 1.00 1.00 1.00 4.00 8.00 18.00 22.00

8583 1.00 1.00 1.00 1.00 1.00 5.00 8.00 17.00 21.78 9574 -- -- 1.00 1.00 2.00 3.00 5.20 -- --

8584 1.00 1.00 1.00 1.00 2.00 6.00 11.00 22.00 29.39 9588 1.00 1.00 1.00 1.00 2.00 6.00 11.00 24.00 29.00

8623 1.00 1.00 1.00 1.00 2.00 6.00 10.00 21.62 29.00 9665 1.00 1.00 1.00 1.00 3.00 7.00 12.50 24.00 29.00

8625 1.00 1.00 1.00 2.00 4.00 8.00 13.10 27.00 33.44 9715 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 29.00

8630 1.00 1.00 1.00 1.00 3.00 6.00 11.00 20.76 27.00 9729 1.00 1.00 1.00 1.00 3.00 7.00 13.00 26.00 31.00

8631 1.00 1.00 1.00 2.00 3.00 7.00 12.00 25.14 36.07 9772 1.00 1.00 1.00 2.00 3.00 7.00 13.00 27.00 33.50

8646 1.00 1.00 1.00 2.00 4.00 8.00 14.00 25.00 31.00 9814 -- -- 1.00 2.00 4.00 10.50 16.80 -- --

8647 1.00 1.00 1.00 1.00 2.00 5.00 9.00 18.34 23.00 9815 1.00 1.00 1.00 2.00 3.00 8.00 14.00 27.02 33.00

8677 1.00 1.00 1.00 2.00 4.00 7.50 12.20 23.04 29.26 9816 -- 1.00 1.00 1.00 3.00 8.00 12.00 30.44 --

8696 -- -- 1.00 2.00 3.50 7.25 9.90 -- -- 9817 1.00 1.00 1.00 1.00 2.00 6.00 10.00 20.00 25.00

8743 1.00 1.00 1.00 1.00 4.00 8.00 14.00 26.00 32.00 9829 1.00 1.00 1.00 1.00 2.00 5.00 10.00 21.00 27.00

8761 1.00 1.00 1.00 1.00 2.00 4.00 8.00 18.00 23.81 9830 1.00 1.00 1.00 1.00 2.00 5.00 8.40 17.48 20.16

8778 1.00 1.00 1.00 1.00 3.00 6.00 12.00 23.00 28.00 9858 1.00 1.00 1.00 2.00 3.00 7.00 12.00 24.70 31.70

8845 1.00 1.00 1.00 1.00 3.00 7.00 12.00 24.00 29.44 9893 1.00 1.00 1.00 1.00 3.00 6.00 12.00 24.00 31.00

8859 1.00 1.00 1.00 2.00 4.00 9.00 15.00 30.00 34.00 9916 1.00 1.00 1.00 1.00 3.00 7.00 13.00 22.08 28.08

8898 1.00 1.00 1.00 2.00 4.00 9.00 15.00 27.58 34.00 9976 1.00 1.00 1.00 1.00 2.00 6.00 11.00 25.00 31.28

8908 -- -- 1.00 2.00 4.00 7.00 11.30 -- --

Appendix 4–5.1. Empirical distribution of storm duration defined by 6-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 275

Appendix 4–5.2. Empirical distribution of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- 1.00 1.75 5.00 12.25 14.80 -- -- 1154 1.00 1.00 1.00 1.00 1.00 7.00 16.80 31.00 37.00

0016 1.00 1.00 1.00 1.00 3.00 8.00 15.00 30.00 39.07 1165 1.00 1.00 1.00 2.00 3.00 8.00 15.00 30.68 37.38

0050 1.00 1.00 1.00 2.00 4.00 10.00 17.00 32.00 40.00 1185 1.00 1.00 1.00 1.00 2.00 5.00 10.00 26.04 34.08

0054 -- 1.00 1.00 1.00 3.00 6.00 12.00 25.00 -- 1186 1.00 1.00 1.00 1.50 4.00 9.00 14.00 35.76 53.84

0120 -- -- 1.00 3.50 5.00 14.00 20.00 -- -- 1188 -- -- 1.00 1.00 3.00 10.25 25.70 -- --

0145 1.00 1.00 1.00 1.00 1.00 7.00 13.00 43.00 43.88 1245 -- -- 2.00 2.25 5.50 9.75 19.80 -- --

0146 -- -- 1.00 2.00 6.00 9.00 14.00 -- -- 1246 1.00 1.00 1.00 1.00 2.00 6.00 12.00 22.70 28.00

0174 1.00 1.00 1.00 1.00 2.00 4.00 9.00 19.64 25.00 1267 1.00 1.00 1.00 1.00 3.00 7.00 13.00 29.50 35.75

0178 -- -- 1.00 1.00 2.50 4.00 11.50 -- -- 1304 1.00 1.00 1.00 2.00 4.00 9.00 15.00 27.98 37.83

0179 1.00 1.00 1.00 2.00 3.00 5.00 9.00 18.26 21.00 1325 1.00 1.00 1.00 2.00 4.00 9.00 16.00 31.00 38.00

0202 1.00 1.00 1.00 1.00 1.00 4.00 9.00 17.66 24.33 1429 1.00 1.00 1.00 1.00 3.00 7.00 14.00 27.00 36.96

0206 1.00 1.00 1.00 1.00 2.00 6.00 12.00 23.00 30.00 1431 1.00 1.00 1.00 2.00 4.00 9.00 18.00 35.00 43.00

0208 -- -- -- 4.00 7.00 10.00 -- -- -- 1432 1.00 1.00 1.00 2.00 4.00 9.00 19.00 35.00 44.00

0211 1.00 1.00 1.00 1.00 3.00 8.00 14.00 29.00 35.45 1433 1.00 1.00 1.00 2.00 4.00 10.00 18.00 32.68 37.84

0244 -- 1.00 1.00 2.00 4.50 11.75 19.40 46.62 -- 1434 1.00 1.00 1.00 2.00 4.00 9.00 16.00 30.00 39.00

0248 1.00 1.00 1.00 1.00 2.00 5.00 10.00 23.00 30.00 1435 1.00 1.00 1.00 2.00 4.00 9.00 18.00 33.00 39.00

0262 1.00 1.00 1.00 1.00 4.00 8.00 15.00 28.00 34.00 1436 1.00 1.00 1.00 2.00 4.00 10.00 18.00 33.40 40.20

0271 -- -- 1.60 2.50 6.00 10.50 14.20 -- -- 1437 -- -- 1.00 2.00 2.00 5.00 25.40 -- --

0380 1.00 1.00 1.00 2.00 4.00 8.00 15.00 30.54 34.00 1438 1.00 1.00 1.00 2.00 4.00 9.00 18.00 33.00 39.56

0394 -- -- 1.20 3.00 5.00 11.00 31.00 -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- 1.00 1.00 2.50 5.75 12.70 -- -- 1492 1.00 1.00 1.00 1.00 2.00 6.00 11.00 25.10 32.55

0427 -- 1.00 1.00 1.00 3.00 9.00 12.00 19.92 -- 1500 -- -- 2.00 3.00 7.00 11.50 18.10 -- --

0428 1.00 1.00 1.00 1.00 4.00 9.00 17.00 34.00 42.95 1528 1.00 1.00 1.00 1.00 2.00 6.00 12.00 26.00 35.00

0429 1.00 1.00 1.00 2.00 5.00 11.00 19.80 43.56 60.44 1541 -- 1.00 1.00 1.00 2.00 9.25 16.30 24.98 --

0463 1.00 1.00 1.00 1.00 3.00 9.00 15.20 30.92 39.38 1569 1.00 1.00 1.00 1.00 3.00 7.00 13.80 32.24 55.56

0493 -- -- 1.90 3.00 5.50 11.25 19.40 -- -- 1632 -- -- -- 1.00 1.00 1.00 -- -- --

0495 1.00 1.00 1.00 1.00 2.00 5.00 12.00 28.84 40.52 1641 1.00 1.00 1.00 1.00 3.00 6.00 14.20 30.20 36.00

0496 -- -- 1.00 1.00 1.00 1.00 3.20 -- -- 1646 1.00 1.00 1.00 1.00 2.00 5.00 10.00 20.48 26.00

0498 -- -- 1.00 1.00 1.00 1.00 4.10 -- -- 1663 -- -- 1.00 1.00 2.00 8.00 15.10 -- --

0509 1.00 1.00 1.00 1.00 3.00 8.00 15.00 30.00 38.00 1671 1.00 1.00 1.00 1.00 3.00 7.00 14.00 28.18 36.00

0518 1.00 1.00 1.00 1.00 2.00 7.00 13.00 25.00 32.00 1680 1.00 1.00 1.00 2.00 4.00 9.00 16.00 31.00 39.00

0521 -- -- 1.00 2.00 4.00 11.00 18.40 -- -- 1694 1.00 1.00 1.00 1.00 2.00 7.50 13.00 27.36 36.40

0556 1.00 1.00 1.00 2.00 4.00 8.00 12.00 49.28 56.00 1696 1.00 1.00 1.00 2.00 3.00 8.00 15.00 33.00 41.00

0569 1.00 1.00 1.00 1.00 3.00 7.00 13.00 28.00 35.00 1697 -- 1.00 1.00 2.00 3.00 8.25 15.70 34.14 --

0572 1.00 1.00 1.00 2.00 4.00 8.00 14.00 30.06 38.03 1698 1.00 1.00 1.00 1.00 2.00 6.00 12.00 25.00 33.00

0576 1.00 1.00 1.00 1.00 4.00 9.00 15.40 37.00 40.40 1720 1.00 1.00 1.00 1.00 1.00 5.00 11.00 25.24 27.24

0580 1.00 1.00 1.00 2.00 3.00 8.75 15.00 34.10 41.35 1761 1.00 1.00 1.00 1.00 6.00 8.00 13.60 28.12 49.24

0587 1.00 1.00 1.00 2.00 4.00 9.00 16.00 32.40 40.40 1773 1.00 1.00 1.00 1.00 3.00 8.00 14.00 27.00 33.83

0605 1.00 1.00 1.00 2.00 4.00 8.00 13.80 27.36 31.40 1810 -- -- 1.00 2.00 4.50 7.00 10.00 -- --

0639 1.00 1.00 1.00 1.00 2.00 6.00 11.00 24.00 30.00 1823 -- -- 1.00 2.00 4.00 6.50 8.40 -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 1.00 1.00 1.00 2.00 5.00 10.00 20.00 35.00 47.88

0665 1.00 1.00 1.00 2.00 4.00 8.00 16.00 30.64 38.82 1875 -- -- 2.00 2.00 4.00 6.00 9.90 -- --

0689 1.00 1.00 1.00 1.00 3.00 7.00 15.60 35.00 43.00 1876 -- 1.00 1.00 2.00 4.00 13.00 19.70 38.04 --

0690 1.00 1.00 1.00 1.00 1.00 4.00 9.00 18.92 25.73 1889 1.00 1.00 1.00 1.00 4.00 9.00 17.00 34.00 39.30

0691 1.00 1.00 1.00 2.00 3.00 8.00 14.00 28.00 34.60 1903 1.00 1.00 1.00 1.00 1.00 4.00 9.00 17.42 20.84

0708 1.00 1.00 1.00 1.00 2.00 5.00 10.00 23.10 31.57 1914 -- -- 2.00 3.00 5.00 8.50 15.40 -- --

0738 1.00 1.00 1.00 2.00 4.00 9.00 17.00 30.00 36.00 1920 1.00 1.00 1.00 2.00 4.00 7.00 14.00 28.32 40.48

0776 1.00 1.00 1.00 1.00 2.00 6.00 12.00 26.28 35.21 1921 1.00 1.00 1.00 1.00 4.00 8.00 15.00 29.00 36.00

0779 1.00 1.00 1.00 1.00 1.00 4.00 10.00 23.72 31.00 1937 1.00 1.00 1.00 2.00 5.00 10.00 19.00 32.00 39.00

0784 1.00 1.00 1.00 1.00 2.00 5.00 10.00 22.00 28.08 1956 1.00 1.00 1.00 1.00 3.00 8.00 15.00 28.00 37.00

0786 1.00 1.00 1.00 1.00 3.00 8.00 15.00 30.38 35.92 1970 -- -- 1.00 2.00 6.00 10.50 14.00 -- --

0917 1.00 1.00 1.00 2.00 4.00 9.00 16.00 34.00 41.73 2014 1.00 1.00 1.00 1.00 3.00 8.00 15.00 28.88 32.72

0923 -- -- 1.80 2.00 7.00 16.00 24.40 -- -- 2015 1.00 1.00 1.00 1.00 3.00 8.00 15.00 32.00 43.00

0926 1.00 1.00 1.00 1.00 3.00 8.00 15.00 28.00 34.00 2019 -- -- 1.00 2.00 3.00 9.00 12.00 -- --

0950 -- -- 1.00 2.00 2.00 3.25 6.30 -- -- 2024 1.00 1.00 1.00 1.00 3.00 8.00 15.00 29.00 36.00

0996 -- -- 2.00 3.00 4.00 8.00 10.00 -- -- 2042 -- -- 1.00 1.00 1.00 4.50 9.00 -- --

1013 1.00 1.00 1.00 1.00 1.00 4.00 9.30 20.64 36.62 2043 -- 1.00 1.00 1.00 1.00 4.00 8.00 24.90 --

1017 1.00 1.00 1.00 1.00 3.00 7.00 13.00 26.00 35.52 2048 1.00 1.00 1.00 1.00 2.00 6.00 13.00 27.00 35.67

1042 -- -- 2.70 3.00 5.00 13.50 20.80 -- -- 2050 -- 1.00 1.00 1.00 1.00 7.00 13.00 37.38 --

1048 -- -- 1.00 2.00 3.00 5.00 7.60 -- -- 2051 -- 1.00 1.00 2.00 3.00 6.00 17.20 28.20 --

1053 1.00 1.00 1.00 2.00 4.00 8.00 15.00 31.00 38.10 2053 -- -- 1.00 1.00 2.50 7.75 11.80 -- --

1057 1.00 1.00 1.00 2.00 4.00 8.00 15.00 28.58 33.00 2073 1.00 1.00 1.00 2.00 3.00 7.00 14.40 29.00 32.12

1063 -- -- 1.70 2.00 5.00 9.25 19.90 -- -- 2082 1.00 1.00 1.00 1.00 2.00 5.00 10.00 22.00 29.00

1068 1.00 1.00 1.00 1.00 3.00 8.00 15.00 31.00 38.17 2086 1.00 1.00 1.00 1.00 3.00 8.00 14.00 27.46 32.00

1080 1.00 1.00 1.00 1.00 1.00 4.00 8.00 14.80 30.30 2088 -- 1.00 1.00 1.00 3.00 8.50 17.00 26.84 --

1081 1.00 1.00 1.00 2.00 4.00 9.00 18.00 31.00 38.00 2090 1.00 1.00 1.00 1.00 2.00 6.00 11.00 23.00 34.48

1133 -- -- 1.00 1.50 4.00 12.00 26.60 -- -- 2096 1.00 1.00 1.00 1.00 3.00 8.00 15.00 27.24 33.00

1136 1.00 1.00 1.00 1.00 3.00 7.00 15.00 33.00 40.00 2128 1.00 1.00 1.00 2.00 4.00 10.00 16.00 35.78 40.39

1138 -- -- 2.00 3.00 4.00 7.00 10.60 -- -- 2131 1.00 1.00 1.00 1.00 2.00 6.00 12.00 22.74 29.37

1139 1.00 1.00 1.00 1.00 4.00 11.00 17.00 52.48 71.62 2142 -- -- 1.10 2.25 5.00 12.25 29.50 -- --

Appendix 4–5.2. Empirical distribution of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in Texas.

[--, not available]
276 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 1.00 1.00 7.00 13.00 25.00 -- -- 3463 -- -- 1.00 2.00 5.00 11.00 23.00 -- --

2206 1.00 1.00 1.00 2.00 3.00 8.00 15.00 28.00 34.00 3476 1.00 1.00 1.00 2.00 4.00 8.00 14.00 28.00 35.38

2238 1.00 1.00 1.00 1.00 3.00 7.00 13.00 34.04 40.04 3485 -- -- 1.60 2.00 6.00 7.00 11.40 -- --

2240 1.00 1.00 1.00 1.00 1.00 7.00 13.00 19.00 19.00 3507 1.00 1.00 1.00 1.00 2.00 6.25 13.00 26.00 31.00

2242 1.00 1.00 1.00 2.00 4.00 9.00 16.00 31.26 36.00 3546 1.00 1.00 1.00 1.00 3.00 8.00 16.00 30.00 37.00

2244 1.00 1.00 1.00 1.00 3.00 8.00 16.00 30.00 35.00 3547 1.00 1.00 1.00 1.00 3.00 8.00 14.00 32.80 40.40

2247 -- 1.00 1.00 2.00 5.00 7.00 11.70 26.84 -- 3579 -- 1.00 1.00 2.00 4.00 10.00 21.00 49.80 --

2309 1.00 1.00 1.00 2.00 4.00 10.00 17.00 31.56 41.12 3642 1.00 1.00 1.00 1.00 4.00 8.00 15.00 28.00 33.25

2312 1.00 1.00 1.00 1.00 3.00 8.00 13.00 22.00 27.53 3646 1.00 1.00 1.00 2.00 4.00 9.00 16.00 29.00 37.00

2334 -- 1.00 1.00 1.00 4.00 9.00 18.40 27.40 -- 3668 -- -- 2.00 4.00 7.00 14.75 23.00 -- --

2336 1.00 1.00 1.00 1.00 3.00 7.75 13.30 24.56 34.63 3673 -- -- 1.00 3.00 5.00 9.00 21.80 -- --

2354 -- -- 1.00 1.00 3.00 7.00 16.40 -- -- 3686 1.00 1.00 1.00 1.00 2.00 7.00 12.00 25.00 27.63

2355 -- 1.00 1.00 2.00 4.00 9.00 22.00 39.00 -- 3691 1.00 1.00 1.00 1.00 3.00 7.00 12.00 25.00 31.00

2357 1.00 1.00 1.00 1.00 3.00 7.75 16.00 30.00 40.00 3734 -- -- 1.00 2.00 4.00 8.00 18.40 -- --

2360 1.00 1.00 1.00 1.00 3.00 7.00 13.00 28.84 37.42 3771 1.00 1.00 1.00 1.00 2.00 6.00 12.00 24.00 28.42

2361 1.00 1.00 1.00 1.00 2.00 5.00 10.00 22.92 34.64 3789 1.00 1.00 1.00 1.00 1.00 7.00 13.00 23.32 40.48

2394 1.00 1.00 1.00 2.00 4.00 9.00 16.00 31.00 37.00 3826 1.00 1.00 1.00 2.00 4.00 10.00 14.70 23.02 35.35

2404 1.00 1.00 1.00 1.00 3.00 8.00 15.00 29.00 33.00 3831 1.00 1.00 1.00 2.00 4.00 8.00 14.00 28.00 41.15

2415 1.00 1.00 1.00 2.00 4.00 9.00 16.00 30.00 37.00 3841 1.00 1.00 1.00 1.00 3.00 6.00 11.80 21.00 31.38

2462 1.00 1.00 1.00 1.00 4.00 8.25 15.00 29.00 36.00 3871 1.00 1.00 1.00 2.00 4.00 8.00 16.00 30.68 36.00

2528 1.00 1.00 1.00 1.00 4.00 8.50 14.40 46.32 54.70 3884 -- -- 1.40 3.00 5.00 7.00 10.20 -- --

2617 1.00 1.00 1.00 2.00 4.00 9.00 17.00 29.70 40.35 3941 -- 1.00 1.00 1.00 5.00 12.25 23.00 37.50 --

2619 1.00 1.00 1.00 1.00 4.00 8.00 14.00 31.28 39.56 3963 -- -- -- 1.00 1.00 1.00 -- -- --

2621 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 32.02 4040 1.00 1.00 1.00 2.00 4.00 8.00 14.80 30.00 33.56

2675 1.00 1.00 1.00 1.00 3.00 7.00 14.00 30.10 34.00 4058 -- -- 1.00 1.75 3.00 5.00 9.90 -- --

2676 1.00 1.00 1.00 1.00 2.00 6.00 11.00 23.00 27.57 4098 1.00 1.00 1.00 1.00 2.00 4.00 9.00 19.00 23.00

2679 1.00 1.00 1.00 1.00 2.00 6.00 12.00 26.00 32.49 4100 1.00 1.00 1.00 2.00 3.00 7.00 13.00 27.56 33.68

2715 1.00 1.00 1.00 2.00 4.00 8.00 15.00 28.90 34.00 4137 1.00 1.00 1.00 1.00 2.00 6.00 11.00 20.00 23.00

2744 1.00 1.00 1.00 1.00 3.00 6.00 13.00 26.24 35.00 4191 1.00 1.00 1.00 1.00 3.00 7.00 14.00 28.00 36.48

2758 1.00 1.00 1.00 2.00 3.00 9.00 18.00 36.12 60.28 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- 1.00 1.00 3.00 7.00 24.80 -- -- 4257 1.00 1.00 1.00 1.00 3.00 7.00 14.00 27.80 34.00

2797 1.00 1.00 1.00 1.00 2.00 6.00 11.00 23.00 30.02 4258 1.00 1.00 1.00 1.00 2.00 7.00 12.50 23.70 37.35

2811 1.00 1.00 1.00 1.00 2.00 6.00 12.00 26.50 33.25 4278 1.00 1.00 1.00 2.00 4.00 8.00 15.00 29.00 36.84

2813 -- -- 1.00 1.00 2.50 5.00 9.70 -- -- 4299 1.00 1.00 1.00 1.00 2.00 5.00 12.00 22.20 29.80

2814 -- -- 1.00 1.00 1.00 5.50 25.00 -- -- 4300 1.00 1.00 1.00 1.00 3.00 8.00 16.00 33.00 41.44

2815 1.00 1.00 1.00 1.00 2.00 5.00 10.00 19.00 21.75 4305 1.00 1.00 1.00 1.00 3.00 8.00 16.00 31.00 38.91

2818 1.00 1.00 1.00 1.00 3.00 8.00 16.00 29.16 37.00 4307 1.00 1.00 1.00 1.00 3.00 8.00 17.40 37.08 49.12

2986 1.00 1.00 1.00 2.00 5.00 11.00 19.00 38.42 50.28 4309 1.00 1.00 1.00 2.00 3.00 8.00 15.00 30.00 36.00

3005 1.00 1.00 1.00 1.00 3.00 7.00 13.00 28.00 33.00 4311 1.00 1.00 1.00 2.00 4.00 8.00 15.00 30.00 38.99

3033 1.00 1.00 1.00 2.00 3.00 5.00 10.00 21.00 26.00 4313 1.00 1.00 1.00 1.00 4.00 8.00 16.90 30.98 41.97

3034 -- -- -- -- 1.00 -- -- -- -- 4319 1.00 1.00 1.00 2.00 4.00 8.00 14.40 31.40 32.94

3047 -- -- 1.00 2.00 4.00 8.00 13.20 -- -- 4329 1.00 1.00 1.00 2.00 3.00 8.00 16.00 31.00 38.92

3103 -- -- 1.00 1.00 2.50 8.00 12.50 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 1.00 1.00 1.00 2.00 4.00 9.00 16.00 31.00 37.00 4375 1.00 1.00 1.00 1.00 2.00 5.00 10.00 21.00 28.00

3156 1.00 1.00 1.00 1.00 3.00 7.50 15.00 30.64 34.64 4392 1.00 1.00 1.00 2.00 5.00 11.00 20.00 43.10 49.91

3171 1.00 1.00 1.00 2.00 4.00 9.00 16.00 29.00 37.00 4425 1.00 1.00 1.00 1.00 2.00 5.00 10.00 24.00 33.73

3189 1.00 1.00 1.00 1.00 2.00 6.00 11.00 20.42 34.15 4440 1.00 1.00 1.00 2.00 4.00 9.00 16.00 31.00 37.20

3260 1.00 1.00 1.00 1.00 3.00 7.00 14.00 24.64 26.80 4476 1.00 1.00 1.00 1.00 3.00 7.00 12.00 25.00 31.00

3267 1.00 1.00 1.00 2.00 4.00 7.00 16.40 41.22 62.01 4498 -- -- 1.00 1.00 2.00 4.00 8.00 -- --

3270 1.00 1.00 1.00 1.00 2.00 5.00 9.00 20.00 26.08 4517 1.00 1.00 1.00 2.00 4.00 8.00 15.00 31.00 38.00

3272 -- -- 1.00 1.00 1.50 3.00 8.50 -- -- 4520 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.64 26.32

3277 -- -- 1.00 1.00 1.00 7.00 18.40 -- -- 4525 -- -- 1.60 2.00 4.00 8.00 16.40 -- --

3278 1.00 1.00 1.00 1.00 2.00 5.00 9.00 25.76 33.52 4563 -- -- 1.00 1.75 3.50 7.25 10.90 -- --

3280 1.00 1.00 1.00 1.00 3.00 5.00 11.00 24.66 34.97 4570 1.00 1.00 1.00 1.00 2.00 6.00 13.00 28.00 37.00

3281 -- -- 1.00 1.00 2.00 3.25 8.60 -- -- 4577 1.00 1.00 1.00 1.00 3.00 8.00 14.00 28.80 35.00

3283 1.00 1.00 1.00 2.00 4.00 10.00 17.00 35.00 44.48 4591 1.00 1.00 1.00 2.00 5.00 10.00 18.00 31.00 38.00

3284 1.00 1.00 1.00 1.00 3.00 7.00 14.00 26.00 32.00 4670 1.00 1.00 1.00 1.00 2.00 6.00 11.00 24.00 30.95

3285 1.00 1.00 1.00 1.00 2.00 6.00 11.00 23.00 28.00 4671 1.00 1.00 1.00 1.00 1.00 7.00 13.00 22.60 26.80

3329 1.00 1.00 1.00 1.00 3.00 8.00 16.00 30.18 36.00 4679 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 31.00

3335 1.00 1.00 1.00 2.00 4.00 10.00 17.00 33.36 45.03 4696 -- -- 1.00 1.00 3.00 6.00 8.20 -- --

3370 1.00 1.00 1.00 2.00 4.00 9.00 16.00 30.00 37.00 4703 1.00 1.00 1.00 1.00 3.00 7.25 12.00 28.30 41.22

3410 1.00 1.00 1.00 1.00 3.00 6.00 12.00 25.00 30.00 4704 1.00 1.00 1.00 2.00 4.00 10.00 18.00 32.30 42.95

3415 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 31.00 4731 1.00 1.00 1.00 1.00 3.00 10.00 17.20 32.00 32.62

3430 1.00 1.00 1.00 1.00 3.00 8.00 15.00 31.00 38.09 4792 1.00 1.00 1.00 1.00 2.00 6.00 10.00 22.00 27.89

3431 1.00 1.00 1.00 1.00 1.00 7.00 18.70 31.00 36.07 4819 1.00 1.00 1.00 1.00 3.00 8.00 14.00 24.68 26.00

3441 -- -- 1.00 1.00 3.00 8.75 13.00 -- -- 4852 -- -- 1.00 1.00 1.00 2.50 8.60 -- --

3442 1.00 1.00 1.00 2.00 4.00 8.00 13.00 26.20 35.00 4866 1.00 1.00 1.00 1.00 3.00 8.00 16.00 29.24 38.00

3446 1.00 1.00 1.00 1.00 3.00 6.00 11.00 26.02 32.02 4876 1.00 1.00 1.00 1.00 3.00 7.00 12.00 25.30 32.12

3460 -- -- 1.00 2.00 4.00 7.75 13.00 -- -- 4878 1.00 1.00 1.00 2.00 4.00 9.00 17.00 33.00 41.00

3462 1.00 1.00 1.00 1.25 4.00 7.75 16.70 28.82 35.70 4880 1.00 1.00 1.00 1.00 3.00 7.00 13.00 26.00 31.11

Appendix 4–5.2. Empirical distribution of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 277

4920 1.00 1.00 1.00 1.00 2.00 6.00 12.00 26.00 32.27 5957 1.00 1.00 1.00 1.00 3.00 6.00 12.00 25.00 31.60

4934 -- -- -- 1.00 2.00 9.75 -- -- -- 5958 1.00 1.00 1.00 2.00 3.00 7.00 15.00 26.80 32.40

4972 1.00 1.00 1.00 1.00 3.00 7.00 14.00 27.54 33.27 5973 1.00 1.00 1.00 2.00 5.00 8.00 16.00 46.44 65.58

4973 1.00 1.00 1.00 2.00 5.00 9.00 17.00 28.00 33.13 5996 1.00 1.00 1.00 1.00 3.00 8.00 15.00 28.00 31.80

4974 1.00 1.00 1.00 1.00 3.00 7.00 12.00 24.04 32.00 6017 1.00 1.00 1.00 1.00 3.00 8.00 13.00 24.54 27.59

4975 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.38 30.69 6024 1.00 1.00 1.00 2.00 4.00 9.50 18.00 42.72 49.72

4978 1.00 1.00 1.00 1.00 2.00 7.00 13.40 28.00 32.68 6050 -- -- 1.00 5.00 8.00 12.50 13.90 -- --

4979 -- -- 1.30 3.75 7.00 14.25 27.10 -- -- 6104 1.00 1.00 1.00 1.00 2.00 5.00 10.00 21.00 29.00

4982 1.00 1.00 1.00 2.00 3.00 8.00 14.00 27.46 34.00 6108 1.00 1.00 1.00 1.00 3.00 8.00 15.00 29.00 35.00

5018 1.00 1.00 1.00 2.00 4.00 8.00 15.00 31.44 41.44 6136 1.00 1.00 1.00 1.00 2.00 4.00 9.00 19.00 26.13

5048 1.00 1.00 1.00 1.00 2.00 5.00 11.00 24.14 30.00 6166 -- 1.00 1.00 2.00 3.00 7.00 11.40 32.12 --

5049 1.00 1.00 1.00 1.00 1.00 5.00 9.60 12.92 15.88 6176 1.00 1.00 1.00 2.00 4.00 10.00 18.00 36.58 42.16

5056 -- -- -- 1.00 4.00 12.50 -- -- -- 6177 1.00 1.00 1.00 1.00 3.00 8.00 14.00 28.00 36.00

5057 1.00 1.00 1.00 1.00 2.00 7.00 16.00 36.60 43.00 6210 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 31.31

5060 1.00 1.00 1.00 2.00 3.00 7.50 16.00 37.88 51.16 6211 1.00 1.00 1.00 1.00 2.00 7.00 15.00 29.56 39.92

5081 1.00 1.00 1.00 2.00 5.00 11.00 18.00 32.00 40.16 6270 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.60 29.90

5094 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 30.46 6275 -- -- -- -- .00 -- -- -- --

5113 1.00 1.00 1.00 1.00 3.00 7.00 13.10 28.00 35.00 6276 -- -- 1.00 3.25 5.50 10.50 17.60 -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 1.00 1.00 1.00 2.00 4.00 9.00 16.00 29.28 35.00

5123 -- -- 1.00 2.00 3.00 7.50 14.50 -- -- 6434 -- -- 1.00 2.00 5.00 8.00 18.40 -- --

5192 1.00 1.00 1.00 1.00 3.00 8.00 15.00 27.00 33.00 6504 1.00 1.00 1.00 1.00 2.00 5.00 11.00 23.00 30.74

5193 1.00 1.00 1.00 1.00 3.00 8.00 15.00 28.00 35.00 6558 -- -- 1.00 2.00 3.50 8.75 19.30 -- --

5224 1.00 1.00 1.00 1.00 4.00 8.00 16.00 28.20 36.40 6615 1.00 1.00 1.00 1.00 2.00 5.00 9.00 19.86 27.72

5228 1.00 1.00 1.00 1.00 3.00 8.00 14.20 29.08 44.04 6660 1.00 1.00 1.00 1.00 4.00 9.00 18.80 40.56 43.52

5235 -- -- 1.00 2.00 4.00 13.00 20.60 -- -- 6663 1.00 1.00 1.00 1.00 2.00 5.00 12.60 27.20 35.16

5247 1.00 1.00 1.00 1.00 2.00 6.00 12.00 24.00 32.00 6734 1.00 1.00 1.00 1.00 3.00 8.00 15.00 27.00 34.00

5258 1.00 1.00 1.00 2.00 4.00 9.00 16.00 32.00 37.72 6736 1.00 1.00 1.00 1.00 2.00 5.00 11.00 24.02 31.00

5303 1.00 1.00 1.00 2.00 3.00 8.00 15.00 27.00 37.89 6740 -- -- 1.80 4.00 8.00 14.50 35.40 -- --

5312 1.00 1.00 1.00 1.00 2.00 6.00 11.00 24.00 30.00 6750 1.00 1.00 1.00 1.00 1.00 7.00 13.80 39.16 46.78

5341 -- -- 1.00 2.00 4.00 7.00 26.00 -- -- 6757 1.00 1.00 1.00 1.00 4.00 8.00 15.50 30.00 35.00

5342 -- -- -- -- .00 -- -- -- -- 6775 1.00 1.00 1.00 1.00 3.00 8.00 15.00 30.80 35.00

5348 1.00 1.00 1.00 1.00 3.00 7.00 14.00 25.00 30.86 6776 1.00 1.00 1.00 1.00 2.00 6.00 11.00 23.00 28.00

5358 1.00 1.00 1.00 2.00 3.00 7.00 13.00 25.78 32.39 6788 1.00 1.00 1.00 2.00 4.00 9.00 13.00 25.16 29.80

5398 1.00 1.00 1.00 2.00 4.00 9.00 17.00 32.26 38.26 6792 1.00 1.00 1.00 1.00 2.00 4.00 8.00 19.00 22.00

5410 1.00 1.00 1.00 1.00 2.00 5.00 11.00 24.78 30.00 6794 -- -- 1.00 3.50 7.00 12.50 21.00 -- --

5411 1.00 1.00 1.00 1.00 3.00 7.00 14.00 29.00 35.00 6834 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 30.00

5424 1.00 1.00 1.00 1.00 5.00 10.25 19.00 40.04 64.91 6893 1.00 1.00 1.00 1.00 2.00 4.00 9.00 19.04 26.00

5429 1.00 1.00 1.00 1.00 3.00 7.00 15.00 29.00 36.00 6935 1.00 1.00 1.00 1.00 2.00 5.00 9.00 21.00 26.61

5431 -- -- 1.00 3.75 10.00 15.25 23.50 -- -- 6981 1.00 1.00 1.00 2.00 3.00 8.00 16.20 33.04 38.68

5461 1.00 1.00 1.00 2.00 4.00 10.00 17.00 35.00 41.00 7020 1.00 1.00 1.00 2.00 5.00 12.00 19.30 41.18 44.53

5463 1.00 1.00 1.00 1.00 2.00 7.00 12.00 24.00 29.00 7060 1.00 1.00 1.00 1.00 2.00 5.00 11.00 19.00 27.00

5471 -- -- 1.00 1.00 1.00 1.00 6.40 -- -- 7066 1.00 1.00 1.00 1.00 4.00 8.00 15.00 28.02 36.00

5477 -- -- 1.00 1.00 2.00 5.00 17.40 -- -- 7074 1.00 1.00 1.00 1.00 2.00 5.00 10.00 21.00 28.00

5528 1.00 1.00 1.00 2.00 4.00 8.00 15.00 27.64 32.00 7097 1.00 1.00 1.00 2.00 3.00 8.00 15.80 29.56 48.72

5579 -- -- -- -- 15.00 -- -- -- -- 7116 1.00 1.00 1.00 2.00 3.00 7.00 13.00 29.00 35.00

5580 -- -- 1.00 2.00 4.00 5.50 13.00 -- -- 7140 1.00 1.00 1.00 1.00 3.00 7.00 14.00 30.00 35.39

5589 1.00 1.00 1.00 1.00 2.00 5.00 8.00 20.00 24.08 7173 1.00 1.00 1.00 1.00 3.00 8.00 16.00 34.78 45.89

5590 1.00 1.00 1.00 1.00 3.00 6.00 16.00 30.40 43.08 7174 1.00 1.00 1.00 1.00 3.00 8.00 16.00 31.00 40.57

5591 1.00 1.00 1.00 2.00 3.00 5.00 9.00 20.00 26.12 7213 1.00 1.00 1.00 2.00 3.00 8.00 16.00 30.22 36.61

5592 1.00 1.00 1.00 2.00 3.00 5.00 9.00 21.00 33.00 7243 1.00 1.00 1.00 1.00 2.00 6.00 12.00 27.00 35.00

5594 1.00 1.00 1.00 1.00 2.00 4.00 8.20 21.88 29.42 7262 1.00 1.00 1.00 1.00 1.00 1.00 7.00 19.00 30.28

5595 -- -- -- -- 1.50 -- -- -- -- 7274 1.00 1.00 1.00 1.00 3.00 8.00 11.00 23.80 29.40

5596 1.00 1.00 1.00 1.00 1.00 3.00 8.00 15.00 21.00 7300 1.00 1.00 1.00 2.00 3.00 7.00 14.00 24.94 31.00

5600 1.00 1.00 1.00 2.00 3.00 5.00 11.00 28.94 38.47 7311 -- -- 1.00 1.00 3.00 6.75 9.70 -- --

5618 -- -- 2.00 2.00 4.00 9.50 12.40 -- -- 7363 -- -- 1.00 2.00 4.00 9.75 16.20 -- --

5650 -- -- 1.10 2.25 5.50 9.00 11.90 -- -- 7422 1.00 1.00 1.00 1.00 3.00 7.00 13.00 27.00 34.30

5656 1.00 1.00 1.00 1.00 1.00 4.00 10.00 22.00 27.46 7431 1.00 1.00 1.00 1.00 3.00 6.00 12.00 29.74 34.00

5658 1.00 1.00 1.00 2.00 4.00 8.00 15.00 32.00 42.16 7481 1.00 1.00 1.00 1.00 2.00 5.00 11.00 23.00 33.55

5661 1.00 1.00 1.00 1.00 1.00 5.00 10.90 26.98 38.95 7497 1.00 1.00 1.00 1.00 2.00 6.00 12.00 24.84 30.00

5666 -- -- 1.00 2.00 3.50 8.75 18.30 -- -- 7498 1.00 1.00 1.00 1.00 2.00 7.00 12.00 26.00 29.43

5695 1.00 1.00 1.00 1.00 3.00 9.00 15.00 29.94 36.47 7499 1.00 1.00 1.00 1.00 2.00 7.00 12.00 23.00 28.23

5742 -- -- 1.00 1.00 5.00 8.50 16.60 -- -- 7531 1.00 1.00 1.00 2.00 4.00 10.00 19.90 47.66 55.88

5766 -- -- 1.00 2.00 4.00 10.00 16.00 -- -- 7534 1.00 1.00 1.00 1.00 3.00 7.00 14.00 33.02 34.00

5770 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.00 33.00 7556 1.00 1.00 1.00 1.00 3.00 7.00 13.00 24.00 29.00

5775 -- -- 1.00 1.00 3.00 7.25 16.50 -- -- 7594 1.00 1.00 1.00 2.00 4.00 8.00 15.00 32.90 41.00

5779 -- -- 1.00 1.00 6.50 10.25 25.10 -- -- 7596 1.00 1.00 1.00 2.00 3.00 7.00 14.50 35.50 54.50

5840 1.00 1.00 1.00 2.00 4.00 9.00 17.00 36.10 42.40 7608 1.00 1.00 1.00 1.00 3.00 8.00 14.00 26.00 31.17

5890 1.00 1.00 1.00 1.00 3.00 7.00 13.00 28.00 37.00 7622 -- -- 1.00 1.00 2.00 5.00 15.20 -- --

5891 1.00 1.00 1.00 1.00 3.00 7.00 12.90 24.00 27.61 7700 1.00 1.00 1.00 2.00 4.00 9.00 16.70 32.00 40.67

5897 1.00 1.00 1.00 1.00 2.00 6.00 12.00 24.00 27.00 7706 1.00 1.00 1.00 1.00 2.00 6.00 13.00 24.00 28.11

Appendix 4–5.2. Empirical distribution of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
278 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 1.00 1.00 1.00 1.50 4.00 9.00 13.00 38.16 39.86 8910 -- -- 1.30 2.00 4.00 5.75 10.00 -- --

7745 1.00 1.00 1.00 2.00 5.00 11.00 20.00 41.54 48.36 8911 1.00 1.00 1.00 1.00 3.00 6.00 14.00 25.78 35.39

7922 1.00 1.00 1.00 1.00 2.00 5.00 11.00 22.20 26.00 8924 1.00 1.00 1.00 1.00 2.00 4.00 9.00 19.00 28.34

7936 1.00 1.00 1.00 1.00 3.00 7.00 13.00 26.00 36.00 8929 -- -- 1.00 1.00 4.50 10.00 20.30 -- --

7943 1.00 1.00 1.00 1.00 3.00 7.00 14.00 30.00 39.00 8942 1.00 1.00 1.00 1.00 3.00 8.00 14.00 25.00 32.64

7944 -- 1.00 1.00 1.00 3.00 9.00 15.50 41.90 -- 8944 1.00 1.00 1.00 1.00 3.00 8.00 14.00 30.00 38.90

7945 1.00 1.00 1.00 1.00 3.00 9.00 17.00 32.00 41.00 8996 1.00 1.00 1.00 2.00 3.00 8.00 15.00 29.00 37.70

7947 1.00 1.00 1.00 1.00 2.00 7.00 13.00 36.12 61.29 9014 -- -- 2.00 3.00 7.00 11.00 22.20 -- --

7948 1.00 1.00 1.00 1.00 3.00 7.00 14.00 27.06 35.06 9037 1.00 1.00 1.00 1.00 3.00 7.00 13.00 28.32 38.66

7951 1.00 1.00 1.00 2.00 4.00 9.00 16.00 27.00 36.94 9106 1.00 1.00 1.00 1.00 3.00 6.00 12.00 34.84 38.00

7953 1.00 1.00 1.00 2.00 3.00 7.50 17.20 37.00 43.60 9107 -- -- 1.00 1.00 1.00 3.00 8.80 -- --

7981 1.00 1.00 1.00 1.00 3.00 7.25 15.00 26.96 32.49 9129 1.00 1.00 1.00 1.00 3.00 7.00 12.00 29.12 40.92

7990 1.00 1.00 1.00 1.00 3.00 8.00 15.00 36.84 52.52 9163 1.00 1.00 1.00 1.00 3.00 7.00 14.00 26.24 34.00

7992 -- -- 1.90 3.00 4.50 7.75 11.10 -- -- 9213 1.00 1.00 1.00 1.00 1.00 8.00 14.00 36.92 55.30

7997 1.00 1.00 1.00 2.00 4.00 7.00 12.00 21.96 26.70 9214 -- -- 1.40 3.00 4.00 6.50 16.60 -- --

7999 -- -- 1.00 1.00 4.00 8.00 17.00 -- -- 9222 1.00 1.00 1.00 1.00 4.00 10.00 17.60 33.24 35.56

8022 -- 1.00 1.00 1.00 3.00 7.00 13.50 47.50 -- 9248 1.00 1.00 1.00 1.00 3.00 9.00 18.20 31.48 46.02

8023 1.00 1.00 1.00 1.00 2.00 5.00 11.00 25.68 32.84 9266 -- 1.00 1.00 2.00 4.00 9.00 18.00 31.32 --

8047 1.00 1.00 1.00 1.00 3.00 7.00 13.00 27.00 32.75 9270 1.00 1.00 1.00 1.00 2.00 4.00 9.00 18.00 25.00

8060 1.00 1.00 1.00 2.00 3.00 9.00 16.00 38.00 40.95 9295 1.00 1.00 1.00 1.00 1.00 7.00 7.40 25.00 30.04

8062 -- -- 1.00 2.00 3.00 10.50 15.20 -- -- 9304 -- -- -- 1.50 4.00 5.75 -- -- --

8068 -- -- 1.00 1.00 2.00 6.00 14.00 -- -- 9307 1.00 1.00 1.00 1.00 4.00 8.00 15.00 27.92 35.68

8081 1.00 1.00 1.00 1.00 3.00 7.00 14.00 30.00 38.00 9328 1.00 1.00 1.00 1.00 3.00 7.00 16.00 41.20 47.04

8089 -- -- 1.00 1.00 4.00 11.00 14.20 -- -- 9329 -- -- 1.00 1.00 5.00 11.50 28.30 -- --

8221 -- -- 1.20 4.00 7.00 15.00 27.40 -- -- 9345 -- -- -- -- 8.00 -- -- -- --

8252 1.00 1.00 1.00 1.00 2.00 6.00 11.00 25.00 34.59 9363 1.00 1.00 1.00 1.00 3.00 7.00 14.00 29.18 37.00

8265 1.00 1.00 1.00 2.00 4.00 10.00 18.00 33.00 41.36 9364 1.00 1.00 1.00 1.00 3.00 7.00 15.00 32.00 41.00

8289 -- 1.00 1.00 1.00 3.00 8.00 23.80 40.04 -- 9365 -- -- 1.00 1.75 4.00 6.25 12.00 -- --

8305 1.00 1.00 1.00 1.00 2.00 4.00 9.00 17.90 23.95 9371 1.00 1.00 1.00 2.00 4.00 9.00 14.90 42.24 49.29

8335 1.00 1.00 1.00 2.00 4.50 10.00 17.00 36.00 47.93 9417 1.00 1.00 1.00 2.00 4.00 8.00 15.00 28.72 35.00

8400 1.00 1.00 1.00 1.00 2.00 5.00 10.00 23.20 46.00 9419 1.00 1.00 1.00 2.00 4.00 9.00 17.00 31.86 39.00

8445 1.00 1.00 1.00 2.00 4.00 9.00 16.00 33.00 44.90 9435 -- 1.00 1.00 1.00 3.00 6.00 16.00 40.44 --

8446 1.00 1.00 1.00 1.00 3.00 7.00 12.20 25.00 30.00 9491 1.00 1.00 1.00 1.00 3.00 8.00 14.00 27.00 31.32

8451 1.00 1.00 1.00 2.00 3.00 8.00 15.00 32.02 38.36 9499 1.00 1.00 1.00 1.00 2.00 6.00 11.00 24.04 31.52

8531 1.00 1.00 1.00 2.00 4.00 9.00 16.00 30.00 35.82 9522 -- -- 1.80 3.00 5.00 13.50 18.60 -- --

8541 1.00 1.00 1.00 2.00 4.00 8.00 18.00 26.00 36.56 9527 1.00 1.00 1.00 1.00 2.00 5.00 10.00 21.00 27.28

8544 1.00 1.00 1.00 1.00 3.00 8.00 15.00 31.00 36.00 9532 1.00 1.00 1.00 1.00 3.00 7.00 12.00 25.00 33.75

8545 -- -- 1.00 1.75 4.50 11.25 20.10 -- -- 9544 -- -- -- 1.00 1.00 6.00 -- -- --

8563 1.00 1.00 1.00 1.00 2.00 7.00 11.00 21.00 27.00 9565 1.00 1.00 1.00 1.00 3.00 6.00 12.00 23.00 30.08

8566 1.00 1.00 1.00 1.00 2.00 5.00 12.00 24.32 27.16 9570 1.00 1.00 1.00 1.00 2.00 5.00 9.00 22.00 26.98

8583 1.00 1.00 1.00 1.00 2.00 6.00 11.00 21.00 26.00 9574 -- -- 1.00 1.00 2.00 5.00 11.00 -- --

8584 1.00 1.00 1.00 1.00 3.00 7.00 13.00 27.00 36.42 9588 1.00 1.00 1.00 1.00 2.00 7.00 14.00 28.62 35.00

8623 1.00 1.00 1.00 1.00 3.00 7.00 12.00 24.00 31.46 9665 1.00 1.00 1.00 1.00 3.00 8.00 15.00 29.00 35.00

8625 1.00 1.00 1.00 2.00 4.00 9.00 16.00 30.00 40.00 9715 1.00 1.00 1.00 1.00 3.00 8.00 14.00 26.00 32.00

8630 1.00 1.00 1.00 1.00 3.00 7.00 13.00 25.56 30.56 9729 1.00 1.00 1.00 2.00 4.00 9.00 16.00 30.16 39.00

8631 1.00 1.00 1.00 2.00 3.00 8.00 13.00 29.00 39.60 9772 1.00 1.00 1.00 2.00 3.00 7.00 14.00 30.12 40.06

8646 1.00 1.00 1.00 2.00 4.00 9.00 15.00 28.00 34.20 9814 -- -- 1.00 2.00 4.00 11.00 16.80 -- --

8647 1.00 1.00 1.00 1.00 2.00 5.00 10.00 21.00 27.00 9815 1.00 1.00 1.00 2.00 4.00 9.00 16.00 31.28 36.28

8677 1.00 1.00 1.00 3.00 5.00 10.00 17.00 24.32 31.08 9816 -- 1.00 1.00 1.00 3.00 8.00 12.90 31.46 --

8696 -- -- 1.00 2.00 3.00 7.50 10.00 -- -- 9817 1.00 1.00 1.00 1.00 2.00 6.00 11.00 23.02 31.00

8743 1.00 1.00 1.00 2.00 4.00 9.00 16.00 30.00 36.00 9829 1.00 1.00 1.00 1.00 2.00 5.00 12.00 24.80 33.90

8761 1.00 1.00 1.00 1.00 2.00 5.00 10.00 19.46 26.69 9830 1.00 1.00 1.00 1.00 2.00 6.00 10.00 23.72 28.70

8778 1.00 1.00 1.00 1.00 3.00 7.00 14.00 26.00 33.00 9858 1.00 1.00 1.00 2.00 3.00 7.00 13.00 28.00 35.00

8845 1.00 1.00 1.00 1.00 3.00 7.00 14.00 28.00 34.00 9893 1.00 1.00 1.00 1.00 3.00 7.00 13.00 27.00 35.09

8859 1.00 1.00 1.00 2.00 4.00 10.00 17.00 33.00 38.00 9916 1.00 1.00 1.00 1.00 3.00 9.00 15.00 28.32 36.00

8898 1.00 1.00 1.00 2.00 4.00 9.00 16.00 32.64 41.66 9976 1.00 1.00 1.00 1.00 3.00 6.00 14.00 30.00 39.00

8908 -- -- 1.00 2.00 4.00 7.00 16.60 -- --

Appendix 4–5.2. Empirical distribution of storm duration defined by 8-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 279

Appendix 4–5.3. Empirical distribution of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- -- 5.00 10.00 13.00 -- -- -- 1154 1.00 1.00 1.00 1.00 1.00 13.00 25.00 47.08 54.04

0016 1.00 1.00 1.00 2.00 4.00 10.00 19.00 39.00 51.10 1165 1.00 1.00 1.00 2.00 4.00 10.00 18.00 39.74 48.74

0050 1.00 1.00 1.00 2.00 5.00 12.00 21.00 37.68 45.34 1185 1.00 1.00 1.00 1.00 2.00 6.00 13.00 34.40 38.40

0054 -- 1.00 1.00 1.00 4.00 7.50 17.00 25.00 -- 1186 1.00 1.00 1.00 1.50 4.00 9.50 15.00 54.12 57.82

0120 -- -- 1.30 4.00 5.50 17.75 53.40 -- -- 1188 -- -- 1.00 1.00 3.00 10.25 25.70 -- --

0145 1.00 1.00 1.00 1.00 1.00 7.00 19.00 54.40 67.00 1245 -- -- 2.00 4.00 8.00 18.00 30.40 -- --

0146 -- -- 1.00 3.25 6.00 11.00 25.00 -- -- 1246 1.00 1.00 1.00 1.00 2.00 9.00 17.00 34.00 37.00

0174 1.00 1.00 1.00 1.00 2.00 5.00 12.00 28.86 37.43 1267 1.00 1.00 1.00 2.00 4.00 9.00 16.50 36.90 47.00

0178 -- -- 1.00 1.75 3.00 8.25 21.40 -- -- 1304 1.00 1.00 1.00 2.00 4.00 11.00 20.80 38.76 49.00

0179 1.00 1.00 1.00 2.00 3.00 5.00 11.00 28.80 38.90 1325 1.00 1.00 1.00 2.00 4.00 10.00 22.00 37.14 51.14

0202 1.00 1.00 1.00 1.00 1.00 5.00 12.00 25.80 30.30 1429 1.00 1.00 1.00 1.00 3.00 9.00 18.00 35.90 45.45

0206 1.00 1.00 1.00 1.00 3.00 8.00 16.00 30.88 36.94 1431 1.00 1.00 1.00 2.00 4.00 11.00 23.00 43.00 51.66

0208 -- -- -- -- 7.00 -- -- -- -- 1432 1.00 1.00 1.00 2.00 4.00 11.00 22.00 44.32 54.00

0211 1.00 1.00 1.00 2.00 4.00 10.00 19.00 37.00 44.00 1433 1.00 1.00 1.00 2.00 4.00 11.00 23.00 42.00 51.50

0244 -- 1.00 1.00 2.00 6.50 15.00 27.00 59.50 -- 1434 1.00 1.00 1.00 2.00 4.00 10.00 21.00 39.00 45.92

0248 1.00 1.00 1.00 1.00 2.00 6.00 13.00 31.68 39.00 1435 1.00 1.00 1.00 2.00 4.00 11.00 22.00 39.44 48.16

0262 1.00 1.00 1.00 2.00 4.00 11.00 19.00 35.00 45.00 1436 1.00 1.00 1.00 2.00 5.00 12.00 23.00 41.00 50.00

0271 -- -- 2.00 4.00 9.50 13.75 20.10 -- -- 1437 -- -- 1.00 2.00 2.00 8.00 28.60 -- --

0380 1.00 1.00 1.00 2.00 4.00 9.00 19.00 33.88 37.91 1438 1.00 1.00 1.00 2.00 4.00 11.00 23.00 41.80 50.80

0394 -- -- -- 2.50 5.00 21.00 -- -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- 1.00 2.00 5.00 10.00 18.20 -- -- 1492 1.00 1.00 1.00 1.00 2.00 7.00 15.00 35.00 44.01

0427 -- 1.00 1.00 1.00 3.00 10.50 22.20 56.68 -- 1500 -- -- 2.00 3.00 7.00 10.00 19.20 -- --

0428 1.00 1.00 1.00 2.00 4.00 12.00 23.00 45.00 54.63 1528 1.00 1.00 1.00 1.00 2.00 7.00 15.00 34.52 44.76

0429 1.00 1.00 1.00 2.00 5.00 12.25 30.00 65.50 75.25 1541 -- 1.00 1.00 1.00 2.50 10.25 18.40 30.70 --

0463 1.00 1.00 1.00 1.00 3.00 9.00 19.40 31.04 39.56 1569 1.00 1.00 1.00 1.00 4.00 9.00 18.00 53.92 55.99

0493 -- -- 1.80 3.00 6.00 12.00 22.20 -- -- 1632 -- -- -- 1.00 1.00 1.00 -- -- --

0495 1.00 1.00 1.00 1.00 2.00 6.00 16.80 32.96 50.16 1641 1.00 1.00 1.00 1.75 3.00 7.00 17.50 36.70 40.55

0496 -- -- 1.00 1.00 1.00 1.00 3.20 -- -- 1646 1.00 1.00 1.00 1.00 2.00 6.00 13.00 26.00 35.00

0498 -- -- 1.00 1.00 1.00 1.00 4.10 -- -- 1663 -- -- 1.00 1.00 2.00 12.00 28.40 -- --

0509 1.00 1.00 1.00 1.00 4.00 10.00 20.00 42.86 51.43 1671 1.00 1.00 1.00 1.00 3.00 9.00 19.00 36.00 48.49

0518 1.00 1.00 1.00 1.00 3.00 9.00 17.00 33.24 41.00 1680 1.00 1.00 1.00 2.00 4.00 11.00 20.00 40.20 49.30

0521 -- -- 1.00 3.00 4.00 14.00 20.80 -- -- 1694 1.00 1.00 1.00 1.00 3.00 10.00 17.30 43.00 43.53

0556 1.00 1.00 1.00 2.00 5.00 9.00 16.20 50.96 56.00 1696 1.00 1.00 1.00 2.00 4.00 9.00 19.00 37.76 49.19

0569 1.00 1.00 1.00 1.00 3.00 8.00 17.00 37.00 43.64 1697 -- 1.00 1.00 2.00 3.00 9.50 19.40 37.88 --

0572 1.00 1.00 1.00 2.00 4.00 9.00 18.00 38.64 45.82 1698 1.00 1.00 1.00 1.00 3.00 8.00 16.00 31.12 37.12

0576 1.00 1.00 1.00 2.00 5.00 10.00 25.00 48.76 67.84 1720 1.00 1.00 1.00 1.00 1.00 6.00 14.00 36.66 50.62

0580 1.00 1.00 1.00 2.00 4.00 10.00 19.00 38.22 46.27 1761 1.00 1.00 1.00 1.00 7.00 12.00 19.00 39.36 53.44

0587 1.00 1.00 1.00 2.00 5.00 11.00 22.00 39.00 51.00 1773 1.00 1.00 1.00 1.00 4.00 10.00 18.00 35.00 41.12

0605 1.00 1.00 1.00 2.00 4.00 10.00 20.00 30.90 49.59 1810 -- -- 1.00 2.00 4.50 7.00 15.50 -- --

0639 1.00 1.00 1.00 1.00 2.00 6.00 15.00 32.00 38.00 1823 -- -- 1.40 2.00 5.00 8.00 11.60 -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 1.00 1.00 1.00 2.00 5.00 10.75 24.90 45.54 56.00

0665 1.00 1.00 1.00 2.00 4.00 10.00 20.00 40.00 46.00 1875 -- -- 1.80 2.50 5.00 7.00 21.20 -- --

0689 1.00 1.00 1.00 1.00 3.00 9.00 21.00 44.92 58.00 1876 -- -- 1.00 2.00 7.00 16.50 21.00 -- --

0690 1.00 1.00 1.00 1.00 2.00 5.00 13.00 26.56 31.00 1889 1.00 1.00 1.00 1.00 5.00 14.75 26.10 56.00 73.24

0691 1.00 1.00 1.00 2.00 4.00 9.00 18.00 34.00 41.32 1903 1.00 1.00 1.00 1.00 2.00 6.00 13.00 22.00 29.50

0708 1.00 1.00 1.00 1.00 2.00 7.00 13.80 29.96 46.52 1914 -- -- 2.10 3.25 5.00 9.50 18.80 -- --

0738 1.00 1.00 1.00 2.00 5.00 11.00 21.00 36.00 43.83 1920 1.00 1.00 1.00 2.00 4.00 8.00 18.00 35.86 52.58

0776 1.00 1.00 1.00 1.00 3.00 7.50 16.00 34.00 41.00 1921 1.00 1.00 1.00 2.00 4.00 10.00 19.00 35.00 41.00

0779 1.00 1.00 1.00 1.00 1.00 5.00 12.00 30.16 37.00 1937 1.00 1.00 1.00 2.00 5.00 13.00 23.00 42.48 52.24

0784 1.00 1.00 1.00 1.00 2.00 6.00 14.00 33.06 41.00 1956 1.00 1.00 1.00 1.00 3.00 9.00 18.00 37.00 45.00

0786 1.00 1.00 1.00 1.00 3.00 10.00 20.00 40.00 50.50 1970 -- -- 1.00 2.25 6.00 10.75 33.50 -- --

0917 1.00 1.00 1.00 2.00 4.00 10.00 20.00 40.00 51.00 2014 1.00 1.00 1.00 1.00 3.00 10.00 21.00 40.00 51.00

0923 -- -- 1.80 2.00 9.00 16.00 24.40 -- -- 2015 1.00 1.00 1.00 1.00 3.00 10.00 21.00 43.00 52.71

0926 1.00 1.00 1.00 1.00 4.00 9.00 19.00 34.00 42.87 2019 -- -- 1.00 2.00 5.00 10.00 15.20 -- --

0950 -- -- 1.00 2.00 2.00 3.50 6.40 -- -- 2024 1.00 1.00 1.00 1.00 4.00 10.00 19.00 36.10 44.55

0996 -- -- 2.50 3.00 8.00 17.50 22.50 -- -- 2042 -- -- 1.00 1.00 2.50 8.00 11.10 -- --

1013 1.00 1.00 1.00 1.00 1.00 5.00 12.40 26.48 51.40 2043 -- 1.00 1.00 1.00 1.00 5.25 13.60 35.34 --

1017 1.00 1.00 1.00 1.00 3.00 9.00 17.40 36.48 44.24 2048 1.00 1.00 1.00 1.00 2.00 7.00 16.00 35.18 47.00

1042 -- -- 3.00 4.00 13.50 19.00 24.80 -- -- 2050 -- 1.00 1.00 1.00 1.00 7.00 25.00 54.58 --

1048 -- -- 1.00 2.00 3.00 5.00 7.60 -- -- 2051 -- 1.00 1.00 2.00 3.00 6.50 18.00 30.68 --

1053 1.00 1.00 1.00 2.00 4.00 10.50 18.60 38.64 52.30 2053 -- -- 1.00 1.00 2.50 7.75 11.80 -- --

1057 1.00 1.00 1.00 2.00 4.00 10.00 18.00 35.00 44.12 2073 1.00 1.00 1.00 2.00 4.00 8.00 18.00 40.00 52.00

1063 -- -- 1.30 2.75 7.00 17.50 24.80 -- -- 2082 1.00 1.00 1.00 1.00 2.00 6.00 13.00 31.00 38.00

1068 1.00 1.00 1.00 1.00 4.00 10.00 19.00 37.00 47.00 2086 1.00 1.00 1.00 1.00 4.00 9.00 19.00 36.00 42.00

1080 1.00 1.00 1.00 1.00 2.00 5.00 12.00 28.36 33.78 2088 -- -- 1.00 1.00 6.00 12.00 23.00 -- --

1081 1.00 1.00 1.00 2.00 5.00 12.00 21.00 36.00 44.40 2090 1.00 1.00 1.00 1.00 3.00 6.00 14.00 26.00 41.50

1133 -- -- 1.00 1.25 5.50 12.00 33.90 -- -- 2096 1.00 1.00 1.00 1.00 4.00 10.00 19.00 33.00 40.85

1136 1.00 1.00 1.00 1.00 3.00 9.00 20.00 43.00 52.00 2128 1.00 1.00 1.00 2.00 5.00 12.00 22.00 45.04 48.28

1138 -- -- 2.00 3.00 5.00 9.00 18.00 -- -- 2131 1.00 1.00 1.00 1.00 3.00 8.00 16.00 30.00 35.49

1139 -- 1.00 1.00 2.00 7.00 13.00 23.00 56.80 -- 2142 -- -- 2.00 3.00 5.00 13.00 37.00 -- --

Appendix 4–5.3. Empirical distribution of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in 

Texas.

[--, not available]
280 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 1.00 1.00 7.00 25.00 46.20 -- -- 3463 -- -- 1.00 2.00 4.50 11.00 25.20 -- --

2206 1.00 1.00 1.00 2.00 4.00 9.00 17.00 40.00 49.00 3476 1.00 1.00 1.00 2.00 4.00 9.50 18.00 37.00 42.00

2238 1.00 1.00 1.00 1.00 3.00 8.00 17.70 42.76 55.29 3485 -- -- 1.30 3.75 7.00 12.25 20.40 -- --

2240 -- 1.00 1.00 1.00 1.00 7.00 19.00 26.20 -- 3507 1.00 1.00 1.00 1.00 2.00 8.00 18.00 31.42 36.21

2242 1.00 1.00 1.00 2.00 4.00 11.00 23.00 39.00 47.54 3546 1.00 1.00 1.00 1.00 4.00 10.00 20.00 38.00 45.00

2244 1.00 1.00 1.00 1.00 4.00 10.00 20.00 38.00 46.00 3547 1.00 1.00 1.00 1.00 3.00 8.00 20.00 37.88 50.61

2247 -- 1.00 1.00 2.00 5.00 9.00 16.00 30.20 -- 3579 -- 1.00 1.00 2.00 4.00 10.00 21.40 50.08 --

2309 1.00 1.00 1.00 2.00 5.00 12.00 22.00 40.22 45.37 3642 1.00 1.00 1.00 1.00 4.00 10.00 19.00 34.00 41.84

2312 1.00 1.00 1.00 1.00 3.00 10.00 17.00 30.80 40.20 3646 1.00 1.00 1.00 2.00 5.00 10.00 20.00 34.00 43.00

2334 -- 1.00 1.00 1.00 5.00 12.25 21.00 31.34 -- 3668 -- -- 2.10 4.00 11.00 18.75 29.60 -- --

2336 1.00 1.00 1.00 1.00 3.00 9.00 16.30 30.00 34.73 3673 -- -- 1.60 3.00 6.00 19.50 41.00 -- --

2354 -- -- 1.00 1.00 3.00 12.00 23.20 -- -- 3686 1.00 1.00 1.00 1.00 3.00 9.00 15.00 32.54 40.54

2355 -- 1.00 1.00 2.00 4.00 9.50 25.00 54.10 -- 3691 1.00 1.00 1.00 1.00 3.00 8.00 16.00 31.70 38.35

2357 1.00 1.00 1.00 1.00 3.00 10.00 21.00 40.00 55.83 3734 -- -- 1.00 2.00 5.50 11.50 31.40 -- --

2360 1.00 1.00 1.00 1.00 3.00 9.00 18.00 35.00 45.09 3771 1.00 1.00 1.00 1.00 2.00 8.00 15.00 29.00 36.81

2361 1.00 1.00 1.00 1.00 3.00 6.00 14.30 30.56 41.65 3789 1.00 1.00 1.00 1.00 1.00 7.00 13.00 40.84 54.28

2394 1.00 1.00 1.00 2.00 4.00 11.00 20.00 38.00 46.07 3826 1.00 1.00 1.00 2.00 4.00 11.00 18.00 34.92 52.18

2404 1.00 1.00 1.00 1.00 4.00 10.00 19.00 34.00 41.00 3831 1.00 1.00 1.00 2.00 4.00 10.00 17.00 42.82 53.82

2415 1.00 1.00 1.00 2.00 5.00 11.00 21.00 38.36 47.00 3841 1.00 1.00 1.00 1.00 3.00 8.00 16.00 33.70 48.75

2462 1.00 1.00 1.00 1.00 4.00 10.00 18.00 34.80 40.20 3871 1.00 1.00 1.00 2.00 4.00 10.00 20.20 41.32 50.22

2528 1.00 1.00 1.00 1.00 4.00 10.00 24.30 52.32 55.49 3884 -- -- 1.20 3.50 6.00 8.50 14.00 -- --

2617 1.00 1.00 1.00 2.00 5.00 10.00 18.00 45.60 53.55 3941 -- 1.00 1.00 2.00 7.00 15.00 25.00 75.80 --

2619 1.00 1.00 1.00 1.00 4.00 10.00 19.90 37.90 67.49 3963 -- -- -- 1.00 1.00 1.00 -- -- --

2621 1.00 1.00 1.00 1.00 3.00 8.00 17.00 33.00 41.74 4040 1.00 1.00 1.00 2.00 4.00 8.00 18.00 32.02 43.02

2675 1.00 1.00 1.00 1.00 3.00 8.50 17.00 34.00 41.00 4058 -- -- 1.00 2.00 3.00 6.00 21.00 -- --

2676 1.00 1.00 1.00 1.00 2.00 7.00 14.00 30.00 38.00 4098 1.00 1.00 1.00 1.00 2.00 6.00 13.00 26.00 31.00

2679 1.00 1.00 1.00 1.00 3.00 8.00 17.00 36.00 44.00 4100 1.00 1.00 1.00 2.00 3.00 9.00 16.00 36.30 46.55

2715 1.00 1.00 1.00 2.00 4.00 10.00 19.00 33.00 41.82 4137 1.00 1.00 1.00 1.00 2.00 7.00 15.00 30.00 35.50

2744 1.00 1.00 1.00 1.00 3.00 8.00 18.00 36.00 46.50 4191 1.00 1.00 1.00 1.00 3.00 9.00 19.00 37.00 45.00

2758 1.00 1.00 1.00 2.00 4.00 13.25 23.70 59.58 78.91 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- 1.00 1.00 4.00 10.00 24.80 -- -- 4257 1.00 1.00 1.00 1.00 3.00 9.00 19.00 34.00 41.00

2797 1.00 1.00 1.00 1.00 3.00 7.00 15.00 31.00 38.00 4258 1.00 1.00 1.00 1.00 3.00 9.25 19.00 33.02 40.21

2811 1.00 1.00 1.00 1.00 3.00 7.00 16.00 33.00 40.00 4278 1.00 1.00 1.00 2.00 4.00 9.00 18.00 36.00 48.76

2813 -- -- 1.00 1.00 3.00 7.00 14.80 -- -- 4299 1.00 1.00 1.00 1.00 3.00 5.00 13.40 28.92 34.70

2814 -- -- 1.00 1.00 1.00 5.50 25.00 -- -- 4300 1.00 1.00 1.00 2.00 4.00 11.00 21.00 44.00 51.00

2815 1.00 1.00 1.00 1.00 2.00 7.00 13.00 24.04 28.08 4305 1.00 1.00 1.00 1.00 4.00 11.00 21.00 43.00 55.00

2818 1.00 1.00 1.00 1.00 3.00 10.00 19.50 43.30 51.60 4307 1.00 1.00 1.00 1.00 4.00 12.00 25.00 50.80 66.50

2986 1.00 1.00 1.00 2.00 5.00 14.00 26.00 50.00 54.32 4309 1.00 1.00 1.00 2.00 3.00 9.00 19.00 39.00 49.00

3005 1.00 1.00 1.00 1.00 3.00 9.00 17.00 33.00 39.76 4311 1.00 1.00 1.00 2.00 4.00 10.00 20.00 41.00 49.00

3033 1.00 1.00 1.00 2.00 3.00 6.00 12.00 25.06 30.06 4313 1.00 1.00 1.00 2.00 4.50 11.00 20.30 42.66 55.33

3034 -- -- -- -- 1.00 -- -- -- -- 4319 -- 1.00 1.00 2.00 4.50 8.25 20.30 34.16 --

3047 -- -- 1.00 2.00 4.50 9.25 15.00 -- -- 4329 1.00 1.00 1.00 2.00 4.00 10.00 21.00 40.00 50.00

3103 -- -- 1.00 1.00 2.00 8.00 13.60 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 1.00 1.00 1.00 2.00 4.00 11.00 20.00 37.00 44.00 4375 1.00 1.00 1.00 1.00 2.00 7.00 14.00 31.24 39.48

3156 1.00 1.00 1.00 1.00 4.00 11.00 19.40 36.56 41.68 4392 1.00 1.00 1.00 2.00 6.00 15.00 26.10 54.82 61.82

3171 1.00 1.00 1.00 2.00 4.00 10.00 20.00 38.00 46.00 4425 1.00 1.00 1.00 1.00 2.00 6.00 14.00 31.86 42.72

3189 1.00 1.00 1.00 1.00 2.00 8.00 15.00 33.16 49.24 4440 1.00 1.00 1.00 2.00 4.00 11.00 21.00 36.00 49.10

3260 1.00 1.00 1.00 1.00 3.00 8.00 17.00 33.20 46.90 4476 1.00 1.00 1.00 1.00 3.00 9.00 17.00 31.00 35.94

3267 1.00 1.00 1.00 2.00 4.00 8.00 17.00 41.52 77.88 4498 -- -- 1.00 1.00 2.00 4.00 25.20 -- --

3270 1.00 1.00 1.00 1.00 2.00 6.00 13.70 27.00 32.47 4517 1.00 1.00 1.00 2.00 4.00 10.00 19.00 39.00 45.28

3272 -- -- 1.00 1.00 2.00 4.00 11.60 -- -- 4520 1.00 1.00 1.00 1.00 2.00 8.00 15.50 28.00 36.20

3277 -- -- 1.00 1.00 1.00 7.00 27.40 -- -- 4525 -- -- 1.10 2.00 5.00 11.75 31.40 -- --

3278 1.00 1.00 1.00 1.00 2.00 5.00 12.00 30.00 41.96 4563 -- -- 1.00 2.00 5.50 8.00 18.30 -- --

3280 1.00 1.00 1.00 1.00 3.00 6.00 13.00 34.46 38.05 4570 1.00 1.00 1.00 1.00 3.00 8.00 16.00 36.00 45.30

3281 -- -- 1.00 1.00 2.00 3.50 8.80 -- -- 4577 1.00 1.00 1.00 1.00 4.00 9.00 19.00 35.00 46.02

3283 1.00 1.00 1.00 2.00 5.00 12.00 23.00 42.56 53.28 4591 1.00 1.00 1.00 2.00 5.00 12.00 22.00 40.00 49.92

3284 1.00 1.00 1.00 1.00 3.00 9.00 18.00 35.86 42.00 4670 1.00 1.00 1.00 1.00 3.00 8.00 16.00 32.00 39.00

3285 1.00 1.00 1.00 1.00 3.00 8.00 16.00 30.00 36.56 4671 1.00 1.00 1.00 1.00 1.00 8.00 19.00 37.36 61.12

3329 1.00 1.00 1.00 1.00 4.00 10.00 20.00 40.00 47.04 4679 1.00 1.00 1.00 1.00 3.00 9.00 17.00 34.00 41.94

3335 1.00 1.00 1.00 2.00 4.00 11.00 24.00 42.28 47.73 4696 -- -- 1.00 1.75 4.00 6.25 8.50 -- --

3370 1.00 1.00 1.00 2.00 4.00 11.00 20.00 38.00 44.00 4703 1.00 1.00 1.00 1.00 3.00 8.50 15.60 34.36 43.24

3410 1.00 1.00 1.00 1.00 3.00 8.00 16.00 34.00 41.00 4704 1.00 1.00 1.00 2.00 5.00 12.00 24.20 41.08 45.14

3415 1.00 1.00 1.00 1.00 3.00 9.00 17.00 34.00 41.15 4731 1.00 1.00 1.00 1.00 3.50 11.00 24.00 37.50 38.00

3430 1.00 1.00 1.00 1.00 4.00 11.00 20.00 41.00 51.00 4792 1.00 1.00 1.00 1.00 3.00 8.00 16.00 28.00 34.20

3431 1.00 1.00 1.00 1.00 6.00 13.00 31.00 49.36 64.18 4819 1.00 1.00 1.00 1.00 3.50 10.00 18.00 33.88 38.11

3441 -- -- 1.00 1.00 3.00 9.00 23.00 -- -- 4852 -- -- 1.00 1.00 1.00 2.75 13.20 -- --

3442 1.00 1.00 1.00 2.00 4.00 9.00 17.00 34.00 48.00 4866 1.00 1.00 1.00 1.00 4.00 10.00 19.00 37.00 44.00

3446 1.00 1.00 1.00 2.00 3.00 7.00 15.00 32.00 43.90 4876 1.00 1.00 1.00 1.00 3.00 8.00 14.00 33.24 35.24

3460 -- -- 1.00 2.00 4.00 9.50 19.00 -- -- 4878 1.00 1.00 1.00 2.00 4.00 11.00 21.00 42.66 50.83

3462 1.00 1.00 1.00 2.00 4.00 10.00 17.00 41.30 52.80 4880 1.00 1.00 1.00 1.00 3.00 7.00 16.00 33.08 42.08

Appendix 4–5.3. Empirical distribution of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 281

4920 1.00 1.00 1.00 1.00 3.00 7.00 15.00 32.00 38.63 5957 1.00 1.00 1.00 1.00 3.00 8.00 16.00 31.00 38.00

4934 -- -- -- 1.00 3.00 15.00 -- -- -- 5958 1.00 1.00 1.00 2.00 4.00 12.00 18.00 30.00 49.00

4972 1.00 1.00 1.00 1.00 4.00 9.00 18.00 33.00 39.47 5973 1.00 1.00 1.00 2.00 5.00 13.00 22.30 63.94 84.74

4973 1.00 1.00 1.00 2.00 5.00 11.00 21.00 33.00 35.53 5996 1.00 1.00 1.00 1.00 4.00 10.00 19.00 37.36 45.00

4974 1.00 1.00 1.00 1.00 4.00 9.00 16.00 33.00 41.10 6017 1.00 1.00 1.00 1.00 3.00 9.00 17.00 29.08 37.12

4975 1.00 1.00 1.00 1.00 3.00 9.00 17.00 31.00 36.25 6024 1.00 1.00 1.00 2.00 5.00 12.25 21.00 45.64 56.79

4978 1.00 1.00 1.00 1.00 3.00 9.00 17.20 35.24 39.24 6050 -- -- 1.00 5.00 8.00 12.50 13.90 -- --

4979 -- -- 1.20 4.50 7.00 17.50 27.40 -- -- 6104 1.00 1.00 1.00 1.00 2.00 5.00 13.00 31.00 40.00

4982 1.00 1.00 1.00 2.00 4.00 9.00 17.00 33.88 44.35 6108 1.00 1.00 1.00 1.00 4.00 10.00 18.00 35.00 48.13

5018 1.00 1.00 1.00 2.00 4.00 9.00 20.00 35.00 43.80 6136 1.00 1.00 1.00 1.00 2.00 6.00 13.00 26.00 35.88

5048 1.00 1.00 1.00 1.00 2.00 6.00 14.00 32.00 43.85 6166 -- 1.00 1.00 2.00 3.00 8.00 17.00 42.12 --

5049 -- 1.00 1.00 1.00 2.00 6.00 11.00 16.00 -- 6176 1.00 1.00 1.00 2.00 4.00 12.00 20.90 43.54 55.09

5056 -- -- -- 1.00 4.00 12.50 -- -- -- 6177 1.00 1.00 1.00 1.00 4.00 9.00 18.00 37.00 47.30

5057 1.00 1.00 1.00 1.00 3.00 9.00 21.00 46.00 54.58 6210 1.00 1.00 1.00 1.00 4.00 9.00 17.00 32.00 40.00

5060 1.00 1.00 1.00 2.00 3.00 8.00 21.00 46.00 58.75 6211 1.00 1.00 1.00 1.00 3.00 9.00 19.00 44.00 48.76

5081 1.00 1.00 1.00 2.00 6.00 13.00 23.00 41.00 52.29 6270 1.00 1.00 1.00 1.00 3.00 9.00 17.00 33.00 39.90

5094 1.00 1.00 1.00 1.00 3.00 9.00 17.00 32.00 38.00 6275 -- -- -- -- .00 -- -- -- --

5113 1.00 1.00 1.00 1.00 3.00 9.00 19.00 39.00 52.40 6276 -- -- 1.00 4.00 6.00 17.75 29.00 -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 1.00 1.00 1.00 2.00 4.00 11.00 20.00 35.00 43.00

5123 -- -- 1.00 2.00 3.00 10.00 20.20 -- -- 6434 -- -- 1.00 3.00 6.00 16.00 28.00 -- --

5192 1.00 1.00 1.00 1.00 4.00 10.00 19.00 35.00 42.75 6504 1.00 1.00 1.00 1.00 2.00 7.00 15.00 31.00 37.00

5193 1.00 1.00 1.00 1.00 4.00 10.00 19.40 38.00 48.00 6558 -- -- 1.00 1.75 5.50 12.25 21.40 -- --

5224 1.00 1.00 1.00 1.00 4.00 10.75 20.00 43.10 56.51 6615 1.00 1.00 1.00 1.00 2.00 6.00 13.00 33.02 41.51

5228 1.00 1.00 1.00 1.00 3.00 8.00 17.00 35.00 45.66 6660 1.00 1.00 1.00 1.00 5.00 11.00 24.00 48.48 55.96

5235 -- -- 1.00 2.00 6.50 14.00 21.90 -- -- 6663 1.00 1.00 1.00 1.00 1.00 6.00 14.60 43.36 44.96

5247 1.00 1.00 1.00 1.00 3.00 7.00 15.30 32.00 41.43 6734 1.00 1.00 1.00 2.00 4.00 10.00 20.00 35.00 48.75

5258 1.00 1.00 1.00 2.00 5.00 11.00 21.00 37.64 45.00 6736 1.00 1.00 1.00 1.00 2.00 6.00 14.00 32.70 43.35

5303 1.00 1.00 1.00 2.00 4.00 10.00 19.00 38.96 52.48 6740 -- -- 1.60 3.00 7.00 13.00 56.40 -- --

5312 1.00 1.00 1.00 1.00 2.00 7.00 16.00 31.46 39.00 6750 1.00 1.00 1.00 1.00 4.00 12.00 25.00 44.68 66.08

5341 -- -- 1.00 2.00 4.00 15.00 26.20 -- -- 6757 1.00 1.00 1.00 1.25 4.00 10.00 20.00 36.00 47.00

5342 -- -- -- -- .00 -- -- -- -- 6775 1.00 1.00 1.00 2.00 4.00 9.00 20.00 37.90 47.45

5348 1.00 1.00 1.00 1.00 3.00 10.00 18.00 32.00 39.12 6776 1.00 1.00 1.00 1.00 3.00 7.00 15.00 29.00 36.00

5358 1.00 1.00 1.00 2.00 4.00 8.00 16.00 33.00 44.43 6788 1.00 1.00 1.00 2.00 5.00 10.50 18.00 31.52 35.30

5398 1.00 1.00 1.00 2.00 4.00 11.00 21.40 40.00 46.34 6792 1.00 1.00 1.00 1.00 2.00 5.00 10.00 24.00 26.49

5410 1.00 1.00 1.00 1.00 2.00 6.00 14.00 31.00 42.00 6794 -- -- 2.20 5.00 9.00 19.50 33.40 -- --

5411 1.00 1.00 1.00 1.00 3.00 9.00 18.00 36.00 49.00 6834 1.00 1.00 1.00 1.00 3.00 9.00 16.00 31.00 36.77

5424 1.00 1.00 1.00 1.00 6.50 13.00 25.00 69.00 73.73 6893 1.00 1.00 1.00 1.00 2.00 5.00 12.00 26.00 35.31

5429 1.00 1.00 1.00 1.00 3.00 9.00 19.00 38.00 48.68 6935 1.00 1.00 1.00 1.00 2.00 6.00 13.00 26.00 33.96

5431 -- -- 1.70 4.50 10.50 22.75 29.50 -- -- 6981 1.00 1.00 1.00 2.00 3.00 9.00 18.70 41.00 46.21

5461 1.00 1.00 1.00 2.00 5.00 12.00 22.00 46.24 55.00 7020 1.00 1.00 1.00 3.00 6.00 16.00 28.00 43.44 72.08

5463 1.00 1.00 1.00 1.00 3.00 8.00 16.00 29.16 33.00 7060 1.00 1.00 1.00 1.00 2.00 7.00 15.00 28.82 34.41

5471 -- -- 1.00 1.00 1.00 4.50 12.00 -- -- 7066 1.00 1.00 1.00 2.00 4.00 11.00 20.00 37.94 44.47

5477 -- -- 1.00 1.00 3.00 8.25 19.00 -- -- 7074 1.00 1.00 1.00 1.00 2.00 6.00 14.00 30.00 35.22

5528 1.00 1.00 1.00 2.00 4.00 10.00 18.10 33.00 42.13 7097 1.00 1.00 1.00 2.00 4.00 8.00 18.80 49.44 75.12

5579 -- -- -- -- 15.00 -- -- -- -- 7116 1.00 1.00 1.00 2.00 4.00 8.00 17.00 33.82 40.91

5580 -- -- 1.00 2.00 4.00 11.00 15.80 -- -- 7140 1.00 1.00 1.00 1.00 3.00 9.00 18.00 38.14 46.57

5589 1.00 1.00 1.00 1.00 2.00 6.00 13.00 20.54 24.62 7173 1.00 1.00 1.00 1.00 3.00 10.00 21.00 46.00 57.98

5590 1.00 1.00 1.00 2.00 3.00 8.00 18.90 39.58 48.51 7174 1.00 1.00 1.00 1.00 4.00 11.00 21.00 43.00 54.81

5591 1.00 1.00 1.00 2.00 3.00 6.00 12.00 28.00 37.43 7213 1.00 1.00 1.00 2.00 3.00 10.00 20.00 46.00 51.23

5592 1.00 1.00 1.00 2.00 3.00 6.00 13.00 34.24 42.54 7243 1.00 1.00 1.00 1.00 3.00 8.00 17.00 35.00 44.00

5594 1.00 1.00 1.00 1.00 2.00 4.00 8.80 34.24 39.96 7262 1.00 1.00 1.00 1.00 1.00 1.00 13.00 24.64 30.82

5595 -- -- -- -- 1.50 -- -- -- -- 7274 1.00 1.00 1.00 1.00 4.00 9.00 15.80 29.00 37.68

5596 1.00 1.00 1.00 1.00 1.00 5.00 11.00 25.00 29.17 7300 1.00 1.00 1.00 2.00 4.00 9.00 17.00 30.00 37.00

5600 1.00 1.00 1.00 2.00 3.00 6.00 14.00 39.00 43.75 7311 -- -- 1.00 1.00 4.00 8.25 10.00 -- --

5618 -- -- 2.00 3.00 7.00 11.50 15.60 -- -- 7363 -- -- 1.00 2.00 4.00 10.00 18.80 -- --

5650 -- -- 1.00 3.00 6.00 11.00 16.00 -- -- 7422 1.00 1.00 1.00 1.00 3.00 9.00 18.00 35.00 43.00

5656 1.00 1.00 1.00 1.00 2.00 6.00 14.00 29.00 35.00 7431 1.00 1.00 1.00 1.00 3.00 7.00 15.00 32.00 42.00

5658 1.00 1.00 1.00 2.00 4.00 9.00 19.00 40.00 51.00 7481 1.00 1.00 1.00 1.00 2.00 6.00 14.00 34.02 44.00

5661 1.00 1.00 1.00 1.00 2.00 7.00 13.00 42.12 53.12 7497 1.00 1.00 1.00 1.00 3.00 8.00 17.00 33.00 41.65

5666 -- -- 1.00 2.00 4.00 9.00 20.20 -- -- 7498 1.00 1.00 1.00 1.00 2.00 9.00 15.00 30.48 42.20

5695 1.00 1.00 1.00 1.00 4.00 10.00 18.00 37.00 44.00 7499 1.00 1.00 1.00 1.00 3.00 8.00 16.00 30.00 38.50

5742 -- -- 1.00 1.00 5.00 11.00 20.00 -- -- 7531 1.00 1.00 1.00 2.00 5.00 12.00 24.00 48.40 57.20

5766 -- -- 1.00 2.00 5.00 13.00 21.70 -- -- 7534 1.00 1.00 1.00 1.00 3.00 10.00 17.00 34.00 43.58

5770 1.00 1.00 1.00 1.00 3.00 8.00 16.00 33.00 42.00 7556 1.00 1.00 1.00 1.00 3.00 8.00 17.00 32.00 39.70

5775 -- -- 1.00 1.00 4.00 11.00 19.40 -- -- 7594 1.00 1.00 1.00 2.00 4.00 9.00 19.00 40.00 48.00

5779 -- -- 1.00 1.00 7.00 16.00 29.00 -- -- 7596 1.00 1.00 1.00 2.00 3.00 8.00 18.00 35.64 69.04

5840 1.00 1.00 1.00 2.00 5.00 11.00 22.00 49.88 55.44 7608 1.00 1.00 1.00 1.00 3.00 9.00 18.00 33.00 46.00

5890 1.00 1.00 1.00 1.00 3.00 9.00 17.00 36.00 47.00 7622 -- -- 1.00 1.00 2.00 5.00 15.20 -- --

5891 1.00 1.00 1.00 1.00 3.00 8.00 15.00 28.80 40.80 7700 1.00 1.00 1.00 2.00 5.00 12.00 22.00 40.00 50.88

5897 1.00 1.00 1.00 1.00 3.00 8.00 16.00 29.88 35.00 7706 1.00 1.00 1.00 1.00 3.00 8.00 16.00 32.26 43.26

Appendix 4–5.3. Empirical distribution of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
282 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 1.00 1.00 1.00 2.00 4.00 10.00 23.10 39.00 39.97 8910 -- -- 2.00 2.25 4.50 8.00 15.40 -- --

7745 1.00 1.00 1.00 2.00 6.00 14.00 27.40 50.00 57.12 8911 1.00 1.00 1.00 1.00 3.00 7.00 16.00 35.00 42.95

7922 1.00 1.00 1.00 1.00 2.00 7.00 13.00 31.00 36.80 8924 1.00 1.00 1.00 1.00 2.00 5.00 11.00 27.20 38.20

7936 1.00 1.00 1.00 1.00 3.00 9.00 17.00 35.00 45.00 8929 -- -- 1.00 1.75 5.00 14.00 37.20 -- --

7943 1.00 1.00 1.00 2.00 3.00 9.00 18.00 38.86 46.93 8942 1.00 1.00 1.00 1.00 3.00 9.00 18.00 36.00 43.68

7944 -- 1.00 1.00 1.00 3.00 11.00 24.30 53.08 -- 8944 1.00 1.00 1.00 1.00 4.00 9.00 18.00 40.00 46.94

7945 1.00 1.00 1.00 1.00 4.00 11.00 23.00 44.00 50.17 8996 1.00 1.00 1.00 2.00 4.00 9.00 18.00 37.50 46.75

7947 1.00 1.00 1.00 1.00 3.00 8.00 17.00 49.00 63.50 9014 -- -- 2.00 3.00 7.00 11.00 22.20 -- --

7948 1.00 1.00 1.00 1.00 3.00 9.00 18.00 36.78 42.00 9037 1.00 1.00 1.00 1.00 3.00 7.00 14.00 40.00 49.12

7951 1.00 1.00 1.00 2.00 4.00 10.00 19.10 36.00 42.00 9106 1.00 1.00 1.00 1.00 3.00 8.00 15.80 38.00 40.94

7953 1.00 1.00 1.00 2.00 4.00 9.00 24.60 56.56 69.56 9107 -- -- 1.00 1.00 1.00 7.00 14.40 -- --

7981 1.00 1.00 1.00 1.00 4.00 10.00 20.90 32.38 40.45 9129 1.00 1.00 1.00 1.00 3.00 10.00 21.00 33.20 43.00

7990 1.00 1.00 1.00 1.00 3.00 11.00 20.90 39.90 54.73 9163 1.00 1.00 1.00 1.00 3.00 9.00 17.00 33.96 42.98

7992 -- -- 1.40 4.00 7.00 13.00 19.20 -- --

7997 1.00 1.00 1.00 2.00 3.50 7.00 13.80 25.90 43.01 9213 1.00 1.00 1.00 1.00 7.00 13.00 25.00 55.00 70.00

7999 -- -- 1.00 1.00 4.00 8.00 17.00 -- -- 9214 -- -- 1.10 2.75 4.00 7.50 16.90 -- --

8022 -- 1.00 1.00 1.00 2.50 7.00 21.00 64.24 -- 9222 1.00 1.00 1.00 2.00 5.00 14.00 26.90 45.34 52.89

8023 1.00 1.00 1.00 1.00 2.00 7.00 15.00 33.14 42.00 9248 1.00 1.00 1.00 1.00 3.00 10.75 20.00 47.04 56.13

8047 1.00 1.00 1.00 1.00 3.00 8.00 17.00 33.00 42.83 9266 -- 1.00 1.00 2.00 4.00 12.00 19.50 54.50 --

8060 1.00 1.00 1.00 2.00 3.00 11.00 23.00 42.00 42.71 9270 1.00 1.00 1.00 1.00 2.00 5.00 12.00 26.00 31.00

8062 -- -- 1.00 2.00 3.00 11.00 30.60 -- -- 9295 1.00 1.00 1.00 1.00 1.00 7.00 13.00 35.56 65.20

8068 -- -- 1.00 1.00 3.00 7.75 17.50 -- -- 9304 -- -- -- 3.50 5.50 10.50 -- -- --

8081 1.00 1.00 1.00 1.00 3.00 8.00 18.50 40.00 53.30 9307 1.00 1.00 1.00 2.00 4.00 10.00 19.00 37.60 44.60

8089 -- -- 1.00 2.00 4.00 12.00 16.80 -- -- 9328 1.00 1.00 1.00 1.00 3.00 9.00 17.10 49.20 63.05

8221 -- -- 1.00 4.00 7.00 21.00 34.00 -- -- 9329 -- -- 1.00 3.00 6.00 13.00 28.40 -- --

8252 1.00 1.00 1.00 1.00 3.00 6.00 16.00 34.00 37.00 9345 -- -- -- -- 10.00 -- -- -- --

8265 1.00 1.00 1.00 2.00 4.00 12.00 23.00 41.24 53.00 9363 1.00 1.00 1.00 1.00 3.00 10.00 20.00 41.50 53.00

8289 -- 1.00 1.00 1.00 3.00 8.50 24.20 51.12 -- 9364 1.00 1.00 1.00 1.00 3.00 9.00 20.00 44.00 53.90

8305 1.00 1.00 1.00 1.00 2.00 5.00 12.00 25.00 31.02 9365 -- -- 1.00 1.75 4.00 7.25 17.50 -- --

8335 1.00 1.00 1.00 2.00 5.00 13.00 21.00 44.00 54.35 9371 1.00 1.00 1.00 2.00 4.00 11.00 20.20 44.04 50.72

8400 1.00 1.00 1.00 1.00 2.00 6.00 16.00 34.00 72.28 9417 1.00 1.00 1.00 2.00 4.00 10.00 19.00 37.00 45.00

8445 1.00 1.00 1.00 2.00 4.00 10.00 20.00 41.00 51.55 9419 1.00 1.00 1.00 2.00 4.00 11.00 21.00 39.00 47.79

8446 1.00 1.00 1.00 1.00 3.00 8.00 16.30 34.00 41.46 9435 -- 1.00 1.00 1.00 3.00 6.00 18.20 49.76 --

8451 1.00 1.00 1.00 2.00 4.00 9.00 18.00 41.60 48.60 9491 1.00 1.00 1.00 1.00 4.00 9.00 19.00 37.00 43.83

8531 1.00 1.00 1.00 2.00 4.00 10.00 20.00 38.00 47.00 9499 1.00 1.00 1.00 1.00 2.00 7.00 15.00 32.30 38.30

8541 1.00 1.00 1.00 2.00 4.00 10.00 21.00 35.76 56.37 9522 -- -- 2.20 4.00 8.00 16.00 26.00 -- --

8544 1.00 1.00 1.00 2.00 4.00 10.00 20.00 36.00 43.50 9527 1.00 1.00 1.00 1.00 2.00 7.00 14.00 29.00 38.00

8545 -- -- 1.00 1.25 4.50 16.50 27.30 -- -- 9532 1.00 1.00 1.00 1.00 3.00 8.00 17.00 33.00 40.11

8563 1.00 1.00 1.00 1.00 3.00 9.00 15.00 31.00 34.54 9544 -- -- -- 1.00 1.00 6.00 -- -- --

8566 1.00 1.00 1.00 1.00 2.00 6.00 14.00 26.80 35.80 9565 1.00 1.00 1.00 1.00 3.00 7.00 16.00 31.52 39.00

8583 1.00 1.00 1.00 1.00 2.00 8.00 16.00 29.00 33.00 9570 1.00 1.00 1.00 1.00 2.00 6.00 13.00 25.74 29.87

8584 1.00 1.00 1.00 1.00 3.00 8.00 18.00 36.00 42.64 9574 -- -- 1.00 1.00 2.50 11.00 15.40 -- --

8623 1.00 1.00 1.00 1.00 3.00 9.00 17.40 30.88 39.88 9588 1.00 1.00 1.00 1.00 3.00 9.00 18.00 36.00 50.69

8625 1.00 1.00 1.00 2.00 5.00 11.00 20.00 40.00 46.02 9665 1.00 1.00 1.00 1.00 4.00 9.00 19.00 37.00 44.00

8630 1.00 1.00 1.00 1.00 3.00 8.00 15.00 30.00 34.34 9715 1.00 1.00 1.00 1.00 4.00 9.00 18.00 34.00 39.00

8631 1.00 1.00 1.00 2.00 4.00 9.00 17.90 44.56 55.39 9729 1.00 1.00 1.00 2.00 4.00 11.00 20.00 39.00 47.00

8646 1.00 1.00 1.00 2.00 4.00 10.00 18.00 35.00 43.00 9772 1.00 1.00 1.00 2.00 3.00 9.00 18.30 37.66 47.83

8647 1.00 1.00 1.00 1.00 2.00 7.00 15.00 29.28 35.00 9814 -- -- 1.60 2.00 4.00 14.00 24.40 -- --

8677 1.00 1.00 1.00 3.00 5.00 11.00 21.00 41.64 42.64 9815 1.00 1.00 1.00 2.00 4.00 10.00 20.00 35.42 45.71

8696 -- -- 1.00 2.00 5.50 10.50 16.30 -- -- 9816 -- 1.00 1.00 1.00 3.00 11.00 16.00 41.50 --

8743 1.00 1.00 1.00 2.00 4.00 10.00 21.00 39.00 48.33 9817 1.00 1.00 1.00 1.00 3.00 8.00 15.00 31.00 36.00

8761 1.00 1.00 1.00 1.00 2.00 6.00 13.00 28.00 33.00 9829 1.00 1.00 1.00 1.00 2.00 6.00 14.00 36.18 46.18

8778 1.00 1.00 1.00 1.00 4.00 10.00 18.00 33.00 44.00 9830 1.00 1.00 1.00 1.00 3.00 7.00 12.30 26.72 56.80

8845 1.00 1.00 1.00 1.00 3.00 10.00 20.00 38.00 49.14 9858 1.00 1.00 1.00 2.00 3.00 8.00 16.00 35.00 40.26

8859 1.00 1.00 1.00 2.00 5.00 11.00 22.00 41.00 50.00 9893 1.00 1.00 1.00 1.00 4.00 9.00 18.00 34.00 45.19

8898 1.00 1.00 1.00 2.00 5.00 11.25 22.00 39.00 46.00 9916 1.00 1.00 1.00 1.00 4.00 11.00 19.00 36.00 41.00

8908 -- -- 1.00 2.00 4.00 9.75 20.50 -- -- 9976 1.00 1.00 1.00 1.00 3.00 8.00 17.00 39.00 45.00

Appendix 4–5.3. Empirical distribution of storm duration defined by 12-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 283

Appendix 4–5.4. Empirical distribution of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- -- 5.00 10.00 13.00 -- -- -- 1154 1.00 1.00 1.00 1.00 7.00 19.00 31.00 81.40 104.00

0016 1.00 1.00 1.00 2.00 4.00 14.00 26.70 52.00 61.17 1165 1.00 1.00 1.00 2.00 4.00 13.00 24.00 50.66 58.97

0050 1.00 1.00 1.00 2.00 5.00 14.00 25.00 45.00 56.98 1185 1.00 1.00 1.00 1.00 2.00 7.00 17.00 36.00 43.14

0054 -- -- 1.00 1.00 4.00 12.75 25.00 -- -- 1186 1.00 1.00 1.00 2.00 4.00 13.00 29.90 79.94 108.71

0120 -- -- 1.80 4.00 16.00 23.50 69.80 -- -- 1188 -- -- -- 1.00 7.00 33.50 -- -- --

0145 1.00 1.00 1.00 1.00 1.00 18.00 25.00 59.40 85.04 1245 -- -- 2.30 4.00 8.50 23.25 59.50 -- --

0146 -- -- 1.00 3.50 7.00 12.00 31.80 -- -- 1246 1.00 1.00 1.00 1.00 3.00 12.00 24.00 41.56 52.00

0174 1.00 1.00 1.00 1.00 2.00 7.00 19.20 47.00 60.64 1267 1.00 1.00 1.00 2.00 4.00 11.00 25.10 50.02 57.04

0178 -- -- 1.00 1.00 2.00 11.75 37.80 -- -- 1304 1.00 1.00 1.00 2.00 5.00 14.00 26.00 57.88 63.94

0179 1.00 1.00 1.00 1.00 3.00 7.00 20.00 45.14 61.35 1325 1.00 1.00 1.00 2.00 5.00 15.00 28.00 57.00 69.50

0202 1.00 1.00 1.00 1.00 2.00 7.00 18.00 30.20 41.20 1429 1.00 1.00 1.00 1.00 4.00 12.00 26.00 50.60 66.00

0206 1.00 1.00 1.00 1.00 3.00 11.00 22.00 41.00 48.44 1431 1.00 1.00 1.00 2.00 5.00 15.00 30.00 53.04 72.00

0208 -- -- -- -- 7.00 -- -- -- -- 1432 1.00 1.00 1.00 2.00 5.00 16.00 30.00 50.00 61.37

0211 1.00 1.00 1.00 2.00 4.00 13.00 26.00 44.00 53.40 1433 1.00 1.00 1.00 2.00 5.00 15.00 29.00 54.00 65.11

0244 -- 1.00 2.00 2.00 9.00 22.50 42.00 73.80 -- 1434 1.00 1.00 1.00 2.00 5.00 14.00 28.00 50.00 58.75

0248 1.00 1.00 1.00 1.00 3.00 8.00 19.00 41.00 51.00 1435 1.00 1.00 1.00 2.00 5.00 15.00 27.00 51.50 65.50

0262 1.00 1.00 1.00 2.00 5.00 13.00 25.00 50.62 60.31 1436 1.00 1.00 1.00 2.00 5.00 15.00 29.00 52.68 68.36

0271 -- -- 1.80 4.00 13.00 29.50 51.20 -- -- 1437 -- -- 1.00 2.00 3.00 10.50 32.20 -- --

0380 1.00 1.00 1.00 2.00 4.00 12.75 24.00 41.08 49.27 1438 1.00 1.00 1.00 2.00 5.00 16.00 28.00 50.00 62.48

0394 -- -- -- 2.25 6.00 24.00 -- -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- 1.00 2.00 5.50 14.50 31.00 -- -- 1492 1.00 1.00 1.00 1.00 3.00 10.00 23.00 47.52 55.76

0427 -- -- 1.00 1.00 3.00 13.00 37.00 -- -- 1500 -- -- 2.00 2.25 6.50 16.25 34.50 -- --

0428 1.00 1.00 1.00 2.00 5.00 17.00 31.00 58.00 70.00 1528 1.00 1.00 1.00 1.00 3.00 8.00 21.00 50.00 60.43

0429 1.00 1.00 1.00 2.00 7.00 23.00 38.00 72.92 75.48 1541 -- 1.00 1.00 1.00 3.00 12.00 26.20 43.92 --

0463 1.00 1.00 1.00 1.00 3.00 12.00 24.90 52.74 73.53 1569 1.00 1.00 1.00 2.00 5.00 18.00 31.10 55.62 79.17

0493 -- -- 1.70 3.00 8.50 17.25 28.00 -- -- 1632 -- -- -- 1.00 1.00 1.00 -- -- --

0495 1.00 1.00 1.00 1.00 2.00 9.00 19.50 50.10 65.05 1641 1.00 1.00 1.00 1.00 3.00 11.00 24.40 49.48 56.60

0496 -- -- 1.00 1.00 1.00 1.00 3.20 -- -- 1646 1.00 1.00 1.00 1.00 2.00 9.00 20.00 37.00 46.54

0498 -- -- 1.00 1.00 1.00 2.00 16.20 -- -- 1663 -- -- 1.00 1.00 2.00 19.50 36.20 -- --

0509 1.00 1.00 1.00 1.00 4.00 13.00 27.00 52.12 66.00 1671 1.00 1.00 1.00 1.00 4.00 13.00 25.00 50.32 61.00

0518 1.00 1.00 1.00 1.00 4.00 12.00 22.00 44.00 52.00 1680 1.00 1.00 1.00 2.00 5.00 15.00 26.00 49.00 55.58

0521 -- -- 1.00 3.00 5.00 16.00 21.40 -- -- 1694 1.00 1.00 1.00 1.00 3.00 12.00 25.20 43.24 60.74

0556 1.00 1.00 1.00 2.00 5.00 10.75 25.90 55.66 72.83 1696 1.00 1.00 1.00 2.00 4.00 11.00 24.70 55.14 71.07

0569 1.00 1.00 1.00 1.00 4.00 12.00 25.00 49.00 60.00 1697 -- 1.00 1.00 2.00 3.00 10.00 21.20 42.12 --

0572 1.00 1.00 1.00 2.00 4.00 12.00 26.00 51.70 65.85 1698 1.00 1.00 1.00 1.00 3.00 12.00 23.00 43.00 54.37

0576 1.00 1.00 1.00 2.00 5.00 17.00 32.00 70.80 76.00 1720 1.00 1.00 1.00 1.00 1.00 8.00 21.00 50.00 67.00

0580 1.00 1.00 1.00 2.00 5.00 12.00 25.00 49.74 55.61 1761 -- 1.00 1.00 1.00 7.00 18.50 31.20 55.44 --

0587 1.00 1.00 1.00 2.00 6.00 14.00 27.00 53.20 70.40 1773 1.00 1.00 1.00 1.00 5.00 13.00 25.00 48.00 59.00

0605 1.00 1.00 1.00 2.00 4.50 12.25 23.00 49.38 109.18 1810 -- -- 1.00 2.75 5.00 8.75 19.70 -- --

0639 1.00 1.00 1.00 1.00 3.00 9.00 21.00 43.00 53.00 1823 -- -- 1.20 2.00 6.00 11.00 22.20 -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 1.00 1.00 1.00 2.00 6.00 16.00 30.20 56.00 72.88

0665 1.00 1.00 1.00 2.00 4.00 13.00 26.00 49.98 63.00 1875 -- -- 2.00 3.25 5.50 16.75 23.00 -- --

0689 1.00 1.00 1.00 1.00 3.00 12.00 27.00 58.00 70.00 1876 -- -- 1.00 2.00 8.00 19.00 31.40 -- --

0690 1.00 1.00 1.00 1.00 2.00 8.00 19.00 34.68 47.00 1889 1.00 1.00 1.00 1.50 7.00 20.00 41.00 74.80 87.90

0691 1.00 1.00 1.00 2.00 4.00 11.00 24.00 45.70 59.00 1903 1.00 1.00 1.00 1.00 2.00 9.00 18.00 33.08 40.77

0708 1.00 1.00 1.00 1.00 3.00 9.00 19.40 49.40 52.74 1914 -- -- 2.00 3.00 5.00 10.00 30.00 -- --

0738 1.00 1.00 1.00 2.00 5.00 15.00 27.00 48.00 60.21 1920 1.00 1.00 1.00 2.00 4.50 13.00 24.30 47.66 62.64

0776 1.00 1.00 1.00 1.00 3.00 9.00 21.00 41.00 49.00 1921 1.00 1.00 1.00 2.00 5.00 13.00 25.00 47.00 59.34

0779 1.00 1.00 1.00 1.00 2.00 8.00 18.00 37.08 46.12 1937 1.00 1.00 1.00 2.00 6.00 15.00 27.00 53.96 70.00

0784 1.00 1.00 1.00 1.00 3.00 9.00 19.00 44.00 51.03 1956 1.00 1.00 1.00 1.00 4.00 12.00 24.00 50.00 59.00

0786 1.00 1.00 1.00 2.00 4.00 13.00 25.00 50.36 55.54 1970 -- -- 1.00 2.00 6.50 11.00 55.90 -- --

0917 1.00 1.00 1.00 2.00 5.00 14.00 26.00 52.08 64.54 2014 1.00 1.00 1.00 1.00 4.00 15.00 29.00 54.16 66.48

0923 -- -- 1.40 2.00 11.00 20.00 29.60 -- -- 2015 1.00 1.00 1.00 1.00 4.00 14.00 28.20 60.84 74.92

0926 1.00 1.00 1.00 2.00 5.00 13.00 25.00 46.30 57.00 2019 -- -- 1.00 2.00 9.50 22.00 36.30 -- --

0950 -- -- 1.00 2.00 3.00 4.00 9.20 -- -- 2024 1.00 1.00 1.00 1.00 4.00 13.00 26.00 48.00 56.00

0996 -- -- 3.00 4.00 10.50 23.25 39.50 -- -- 2042 -- -- 1.00 1.00 3.00 13.00 28.60 -- --

1013 1.00 1.00 1.00 1.00 2.00 7.75 20.00 42.50 55.50 2043 -- 1.00 1.00 1.00 1.00 6.75 20.80 46.56 --

1017 1.00 1.00 1.00 1.00 4.00 12.00 23.00 50.00 60.75 2048 1.00 1.00 1.00 1.00 3.00 10.00 24.00 47.08 60.70

1042 -- -- 3.00 4.00 13.50 20.00 52.70 -- -- 2050 -- 1.00 1.00 1.00 1.00 17.50 36.70 96.90 --

1048 -- -- 1.50 2.00 5.00 9.25 20.50 -- -- 2051 -- 1.00 1.00 1.50 3.00 7.00 24.20 44.08 --

1053 1.00 1.00 1.00 2.00 5.00 14.00 28.00 57.00 64.00 2053 -- -- 1.00 1.00 2.50 7.75 11.80 -- --

1057 1.00 1.00 1.00 2.00 5.00 12.00 23.60 46.00 57.00 2073 1.00 1.00 1.00 2.00 4.00 11.50 26.00 48.24 58.24

1063 -- -- 1.00 5.00 13.00 20.00 26.00 -- -- 2082 1.00 1.00 1.00 1.00 2.00 7.00 18.00 36.52 45.26

1068 1.00 1.00 1.00 1.00 4.00 13.00 25.00 47.00 58.74 2086 1.00 1.00 1.00 1.00 4.00 13.00 25.00 44.12 55.00

1080 1.00 1.00 1.00 1.00 2.00 9.00 22.00 42.48 50.68 2088 -- -- 1.00 1.00 5.00 17.00 27.00 -- --

1081 1.00 1.00 1.00 2.00 5.00 15.00 28.00 49.00 56.67 2090 1.00 1.00 1.00 1.00 3.00 10.00 21.00 49.00 63.44

1133 -- -- 1.00 1.00 5.50 20.25 51.50 -- -- 2096 1.00 1.00 1.00 1.00 5.00 13.00 25.00 47.54 60.81

1136 1.00 1.00 1.00 1.00 4.00 15.00 29.00 63.42 76.42 2128 1.00 1.00 1.00 2.00 6.00 17.00 32.10 50.00 54.54

1138 -- -- 2.00 3.50 6.00 15.00 21.40 -- -- 2131 1.00 1.00 1.00 1.00 3.00 12.00 23.00 46.00 55.42

1139 -- 1.00 1.00 2.00 7.00 19.50 45.20 65.28 -- 2142 -- -- 2.00 4.25 8.50 15.25 48.10 -- --

Appendix 4–5.4. Empirical distribution of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in 

Texas.

[--, not available]
284 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 1.00 1.00 7.00 25.00 46.90 -- -- 3463 -- -- 1.00 2.00 6.00 16.50 27.50 -- --

2206 1.00 1.00 1.00 2.00 4.00 12.00 24.00 46.00 64.02 3476 1.00 1.00 1.00 2.00 4.00 13.00 26.60 44.00 56.68

2238 1.00 1.00 1.00 1.00 4.00 13.00 26.00 67.20 79.20 3485 -- -- 1.30 3.75 7.00 12.25 20.40 -- --

2240 -- 1.00 1.00 1.00 1.00 19.00 25.00 51.64 -- 3507 1.00 1.00 1.00 1.00 3.00 12.00 23.00 45.48 55.72

2242 1.00 1.00 1.00 2.00 5.00 15.00 28.70 49.00 57.34 3546 1.00 1.00 1.00 1.00 5.00 14.00 26.00 48.56 58.78

2244 1.00 1.00 1.00 1.00 5.00 15.00 27.00 51.00 62.08 3547 1.00 1.00 1.00 1.00 4.00 10.00 21.00 52.26 62.75

2247 -- -- 1.00 3.25 6.50 14.25 33.30 -- -- 3579 -- 1.00 1.00 2.00 5.00 15.00 27.80 50.92 --

2309 1.00 1.00 1.00 2.00 6.00 15.00 30.00 50.00 58.18 3642 1.00 1.00 1.00 2.00 5.00 13.00 25.00 46.24 54.62

2312 1.00 1.00 1.00 1.00 4.00 13.00 22.20 44.68 61.52 3646 1.00 1.00 1.00 2.00 5.00 13.00 25.00 46.08 62.68

2334 -- 1.00 1.00 1.00 5.00 19.00 27.80 34.88 -- 3668 -- -- 2.90 4.00 11.00 20.00 47.80 -- --

2336 1.00 1.00 1.00 1.00 3.00 11.00 20.10 38.28 52.01 3673 -- -- 1.30 3.75 11.00 23.00 49.10 -- --

2354 -- -- 1.00 1.50 3.00 12.50 22.80 -- -- 3686 1.00 1.00 1.00 1.00 4.00 11.00 24.00 45.00 50.87

2355 -- -- 1.00 2.00 4.00 15.75 43.50 -- -- 3691 1.00 1.00 1.00 1.00 4.00 11.00 23.00 42.80 52.00

2357 1.00 1.00 1.00 1.00 3.00 13.00 28.00 53.00 63.98 3734 -- -- 1.00 2.00 9.00 21.00 36.20 -- --

2360 1.00 1.00 1.00 1.00 4.00 13.00 27.00 53.00 67.00 3771 1.00 1.00 1.00 1.00 3.00 10.00 21.00 40.00 49.00

2361 1.00 1.00 1.00 1.00 3.00 8.25 23.00 39.32 53.54 3789 -- 1.00 1.00 1.00 1.00 7.00 19.00 57.16 --

2394 1.00 1.00 1.00 2.00 5.00 13.00 26.00 47.00 57.64 3826 1.00 1.00 1.00 2.00 4.00 11.00 19.00 51.36 69.32

2404 1.00 1.00 1.00 2.00 5.00 13.00 25.00 44.24 54.00 3831 1.00 1.00 1.00 2.00 5.00 15.00 27.00 47.78 60.17

2415 1.00 1.00 1.00 2.00 5.00 14.00 27.00 51.00 60.70 3841 1.00 1.00 1.00 1.00 3.00 9.50 19.80 42.68 74.18

2462 1.00 1.00 1.00 2.00 4.00 13.00 27.00 49.00 54.11 3871 1.00 1.00 1.00 2.00 5.00 14.00 28.00 52.00 65.00

2528 1.00 1.00 1.00 1.00 5.00 11.25 34.30 55.58 78.32 3884 -- -- 1.10 3.25 6.50 10.50 15.80 -- --

2617 1.00 1.00 1.00 2.00 5.00 13.00 27.40 53.44 56.72 3941 -- 1.00 1.00 3.00 9.00 16.75 43.20 81.24 --

2619 1.00 1.00 1.00 1.00 4.00 12.00 25.00 57.76 77.68 3963 -- -- -- 1.00 1.00 4.50 -- -- --

2621 1.00 1.00 1.00 1.00 3.00 12.00 23.00 42.00 49.84 4040 1.00 1.00 1.00 2.00 4.00 11.00 23.00 39.66 53.00

2675 1.00 1.00 1.00 1.00 4.00 11.00 23.00 50.00 58.91 4058 -- -- 1.00 3.00 4.50 20.50 40.80 -- --

2676 1.00 1.00 1.00 1.00 2.00 9.00 21.00 43.24 55.00 4098 1.00 1.00 1.00 1.00 2.00 8.00 19.00 37.00 47.00

2679 1.00 1.00 1.00 1.00 3.00 11.00 24.00 47.22 57.61 4100 1.00 1.00 1.00 2.00 4.00 10.00 21.00 46.50 54.50

2715 1.00 1.00 1.00 2.00 5.00 13.00 24.00 44.00 52.18 4137 1.00 1.00 1.00 1.00 3.00 11.00 21.00 37.00 44.53

2744 1.00 1.00 1.00 1.00 3.00 10.00 23.00 47.00 58.95 4191 1.00 1.00 1.00 1.00 4.00 12.00 24.00 47.30 60.00

2758 1.00 1.00 1.00 2.00 4.00 13.50 30.20 93.36 96.94 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- 1.00 1.00 4.00 10.00 24.80 -- -- 4257 1.00 1.00 1.00 1.00 4.00 14.00 25.00 44.00 54.26

2797 1.00 1.00 1.00 1.00 3.00 9.00 22.00 39.00 47.29 4258 1.00 1.00 1.00 1.00 3.00 15.00 25.00 49.40 60.70

2811 1.00 1.00 1.00 1.00 3.00 10.00 23.00 47.00 57.00 4278 1.00 1.00 1.00 2.00 4.00 11.25 24.00 51.00 63.53

2813 -- -- 1.00 1.00 3.50 12.00 32.30 -- -- 4299 1.00 1.00 1.00 1.00 2.50 5.25 17.10 36.62 48.34

2814 -- -- 1.00 1.00 1.00 11.75 31.30 -- -- 4300 1.00 1.00 1.00 2.00 5.00 16.00 31.00 57.04 72.76

2815 1.00 1.00 1.00 1.00 3.00 9.00 19.00 30.76 36.38 4305 1.00 1.00 1.00 2.00 5.00 16.00 29.00 61.02 74.00

2818 1.00 1.00 1.00 1.00 4.00 11.00 23.70 46.00 77.46 4307 1.00 1.00 1.00 1.00 5.00 19.00 37.00 70.80 85.50

2986 1.00 1.00 1.00 2.00 7.00 17.00 30.00 55.50 66.95 4309 1.00 1.00 1.00 2.00 4.00 12.00 24.00 51.00 62.36

3005 1.00 1.00 1.00 1.00 4.00 12.00 23.00 42.00 52.00 4311 1.00 1.00 1.00 2.00 4.00 12.00 26.00 51.54 63.00

3033 1.00 1.00 1.00 2.00 3.00 6.00 16.00 31.00 36.56 4313 1.00 1.00 1.00 2.00 5.00 18.00 34.00 48.52 55.63

3034 -- -- -- -- 1.00 -- -- -- -- 4319 -- 1.00 1.00 2.50 6.00 16.50 27.00 47.24 --

3047 -- -- 1.40 3.00 6.00 23.00 46.80 -- -- 4329 1.00 1.00 1.00 2.00 4.00 13.00 26.00 53.00 62.66

3103 -- -- 1.00 1.00 4.00 12.50 24.80 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 1.00 1.00 1.00 2.00 5.00 13.00 25.00 47.00 53.31 4375 1.00 1.00 1.00 1.00 3.00 10.00 21.00 45.52 63.38

3156 1.00 1.00 1.00 1.00 5.00 15.75 30.00 63.28 72.94 4392 1.00 1.00 1.00 3.00 6.00 19.00 31.00 60.64 87.02

3171 1.00 1.00 1.00 2.00 5.00 14.00 25.00 47.60 54.30 4425 1.00 1.00 1.00 1.00 2.00 9.00 21.00 42.00 46.00

3189 1.00 1.00 1.00 1.00 2.00 9.00 21.00 50.40 73.20 4440 1.00 1.00 1.00 2.00 5.00 14.00 26.00 50.00 69.00

3260 1.00 1.00 1.00 1.00 5.00 12.00 24.40 36.64 52.08 4476 1.00 1.00 1.00 1.00 4.00 12.00 22.00 40.00 50.54

3267 1.00 1.00 1.00 2.00 4.00 9.75 27.90 41.94 102.39 4498 -- -- 1.00 1.00 2.00 4.00 25.20 -- --

3270 1.00 1.00 1.00 1.00 2.00 8.00 19.00 34.36 44.36 4517 1.00 1.00 1.00 2.00 5.00 14.00 27.00 50.44 63.00

3272 -- -- 1.00 1.00 2.00 12.00 31.00 -- -- 4520 1.00 1.00 1.00 1.00 3.00 11.00 23.00 39.00 46.28

3277 -- -- 1.00 1.00 1.00 8.50 28.00 -- -- 4525 -- -- 1.00 2.00 5.00 30.50 68.40 -- --

3278 1.00 1.00 1.00 1.00 3.00 7.00 19.00 42.36 49.00 4563 -- -- 1.00 2.00 4.50 8.50 23.40 -- --

3280 1.00 1.00 1.00 1.00 3.00 6.00 18.90 35.98 54.39 4570 1.00 1.00 1.00 1.00 3.00 12.00 23.00 46.00 55.29

3281 -- -- 1.00 1.00 2.00 5.00 20.20 -- -- 4577 1.00 1.00 1.00 1.00 4.00 12.00 24.00 47.00 58.38

3283 1.00 1.00 1.00 2.00 6.00 17.00 31.00 57.24 67.36 4591 1.00 1.00 1.00 2.00 6.00 15.00 28.40 53.08 66.08

3284 1.00 1.00 1.00 1.00 4.00 12.00 24.40 47.00 60.00 4670 1.00 1.00 1.00 1.00 3.00 11.00 22.00 43.88 55.32

3285 1.00 1.00 1.00 1.00 3.00 11.00 23.00 41.00 50.74 4671 1.00 1.00 1.00 1.00 7.00 13.00 25.00 50.80 78.40

3329 1.00 1.00 1.00 2.00 5.00 14.00 27.00 52.00 66.36 4679 1.00 1.00 1.00 1.00 4.00 13.00 24.00 43.00 54.00

3335 1.00 1.00 1.00 2.00 5.00 17.00 33.40 54.00 62.00 4696 -- -- 1.00 1.25 4.00 6.75 35.60 -- --

3370 1.00 1.00 1.00 2.00 5.00 13.00 24.00 44.00 50.30 4703 1.00 1.00 1.00 1.00 3.00 10.50 23.00 46.80 109.10

3410 1.00 1.00 1.00 1.00 3.00 11.00 22.00 43.00 54.48 4704 1.00 1.00 1.00 2.00 6.00 18.00 28.00 55.00 66.98

3415 1.00 1.00 1.00 1.00 4.00 12.00 23.00 45.00 55.03 4731 1.00 1.00 1.00 1.00 5.00 17.50 31.00 64.00 99.40

3430 1.00 1.00 1.00 2.00 5.00 15.00 28.00 57.90 69.00 4792 1.00 1.00 1.00 1.00 3.00 10.00 22.00 45.00 51.00

3431 1.00 1.00 1.00 1.00 7.00 25.00 37.00 67.00 73.00 4819 1.00 1.00 1.00 1.00 4.00 12.00 23.60 46.44 57.32

3441 -- -- 1.00 1.00 3.00 10.50 29.20 -- -- 4852 -- -- 1.00 1.00 1.00 2.75 13.20 -- --

3442 1.00 1.00 1.00 2.00 5.00 11.00 22.00 51.44 59.08 4866 1.00 1.00 1.00 2.00 4.00 13.00 25.00 46.00 57.00

3446 1.00 1.00 1.00 2.00 3.00 8.00 19.00 38.00 48.04 4876 1.00 1.00 1.00 1.00 4.00 11.25 23.00 49.54 74.64

3460 -- -- 1.00 2.00 6.00 16.50 25.30 -- -- 4878 1.00 1.00 1.00 2.00 5.00 16.00 28.00 55.00 67.00

3462 1.00 1.00 1.00 2.00 5.00 14.00 24.20 50.72 64.97 4880 1.00 1.00 1.00 1.00 3.00 10.00 22.00 44.16 57.00

Appendix 4–5.4. Empirical distribution of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 285

4920 1.00 1.00 1.00 1.00 3.00 10.00 22.40 47.00 59.00 5957 1.00 1.00 1.00 1.00 3.00 10.00 21.00 40.44 52.00

4934 -- -- -- 1.00 3.00 15.00 -- -- -- 5958 1.00 1.00 1.00 2.00 4.00 15.00 28.30 62.46 67.00

4972 1.00 1.00 1.00 1.00 4.00 12.00 25.00 44.00 54.00 5973 -- 1.00 1.00 2.75 7.00 17.25 35.70 71.24 --

4973 1.00 1.00 1.00 2.50 6.00 17.00 28.00 43.96 53.86 5996 1.00 1.00 1.00 1.00 4.00 13.00 25.00 47.00 57.38

4974 1.00 1.00 1.00 1.00 4.00 11.00 23.00 44.96 57.00 6017 1.00 1.00 1.00 1.00 3.00 10.00 25.00 46.16 56.48

4975 1.00 1.00 1.00 1.00 4.00 12.00 23.00 42.00 48.00 6024 1.00 1.00 1.00 2.00 5.00 17.00 28.00 60.40 69.95

4978 1.00 1.00 1.00 1.00 3.00 12.00 22.60 39.64 62.78 6050 -- -- 1.00 5.00 8.00 13.00 19.00 -- --

4979 -- -- 1.00 4.75 7.00 18.25 53.50 -- -- 6104 1.00 1.00 1.00 1.00 2.00 7.00 20.00 42.00 54.00

4982 1.00 1.00 1.00 2.00 4.00 12.00 22.00 41.00 51.20 6108 1.00 1.00 1.00 1.00 4.00 13.00 25.00 49.00 55.00

5018 1.00 1.00 1.00 2.00 5.00 12.00 23.00 41.66 48.33 6136 1.00 1.00 1.00 1.00 2.00 8.00 19.00 40.00 47.00

5048 1.00 1.00 1.00 1.00 2.00 9.00 21.00 43.00 53.00 6166 -- 1.00 1.00 2.00 4.00 10.50 23.00 43.24 --

5049 -- 1.00 1.00 1.00 2.00 8.00 12.80 30.52 -- 6176 1.00 1.00 1.00 2.00 5.00 14.25 26.00 55.00 77.05

5056 -- -- -- 1.00 4.00 12.50 -- -- -- 6177 1.00 1.00 1.00 1.00 4.00 13.00 25.00 48.00 59.66

5057 1.00 1.00 1.00 1.00 3.00 12.00 27.00 61.00 71.56 6210 1.00 1.00 1.00 1.00 4.00 12.00 23.00 43.34 51.34

5060 1.00 1.00 1.00 2.00 3.00 10.00 26.00 57.58 92.87 6211 1.00 1.00 1.00 1.00 3.00 12.00 25.90 50.44 61.18

5081 1.00 1.00 1.00 2.00 6.00 16.00 28.50 56.00 78.00 6270 1.00 1.00 1.00 1.00 4.00 13.00 24.00 45.76 55.76

5094 1.00 1.00 1.00 1.00 4.00 12.00 23.00 43.00 54.48 6275 -- -- -- -- .00 -- -- -- --

5113 1.00 1.00 1.00 1.00 4.00 13.00 26.00 54.00 68.04 6276 -- -- 1.00 3.50 6.00 25.00 41.60 -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 1.00 1.00 1.00 2.00 5.00 13.00 25.00 47.00 55.42

5123 -- -- 1.00 2.00 3.00 10.00 20.20 -- -- 6434 -- -- 2.60 5.00 8.00 18.00 33.80 -- --

5192 1.00 1.00 1.00 2.00 4.00 12.00 24.00 43.14 52.07 6504 1.00 1.00 1.00 1.00 3.00 10.00 21.00 40.00 56.00

5193 1.00 1.00 1.00 2.00 4.00 14.00 26.00 49.00 58.54 6558 -- -- 1.00 1.50 6.00 13.00 24.00 -- --

5224 1.00 1.00 1.00 1.50 5.00 15.00 27.40 51.92 56.82 6615 1.00 1.00 1.00 1.00 2.00 8.00 21.00 39.68 48.21

5228 1.00 1.00 1.00 1.00 3.00 10.00 23.00 49.24 53.00 6660 -- 1.00 1.00 2.00 6.00 18.00 35.60 62.20 --

5235 -- -- 1.00 2.00 11.00 21.00 29.00 -- -- 6663 -- 1.00 1.00 1.00 1.00 8.00 17.40 46.40 --

5247 1.00 1.00 1.00 1.00 3.00 10.00 22.00 45.48 56.74 6734 1.00 1.00 1.00 2.00 4.00 13.00 22.20 47.04 55.56

5258 1.00 1.00 1.00 2.00 5.00 15.00 28.00 48.00 58.00 6736 1.00 1.00 1.00 1.00 3.00 8.00 19.00 44.00 56.00

5303 1.00 1.00 1.00 2.00 4.00 13.00 26.00 52.06 59.06 6740 -- -- 1.40 2.50 7.00 34.50 72.00 -- --

5312 1.00 1.00 1.00 1.00 3.00 9.00 22.00 45.00 55.60 6750 1.00 1.00 1.00 1.00 6.00 14.50 36.00 64.64 67.00

5341 -- -- 1.30 2.75 5.50 27.00 37.40 -- -- 6757 1.00 1.00 1.00 2.00 5.00 14.00 26.00 52.06 62.00

5342 -- -- -- -- .00 -- -- -- -- 6775 1.00 1.00 1.00 2.00 5.00 15.00 25.00 48.00 57.84

5348 1.00 1.00 1.00 1.00 4.00 13.00 24.00 47.32 58.66 6776 1.00 1.00 1.00 1.00 3.00 9.00 21.00 40.00 49.00

5358 1.00 1.00 1.00 2.00 4.00 10.00 23.00 46.00 54.63 6788 1.00 1.00 1.00 3.00 6.00 13.00 23.70 33.48 44.55

5398 1.00 1.00 1.00 2.00 5.00 14.00 26.00 51.00 63.40 6792 1.00 1.00 1.00 1.00 2.00 6.00 17.00 36.38 45.69

5410 1.00 1.00 1.00 1.00 3.00 8.50 21.00 42.00 54.94 6794 -- -- 1.00 6.00 19.00 31.00 39.00 -- --

5411 1.00 1.00 1.00 2.00 4.00 13.00 25.00 54.42 67.00 6834 1.00 1.00 1.00 1.00 4.00 12.00 23.00 43.00 50.96

5424 1.00 1.00 1.00 1.00 7.00 19.00 43.00 73.68 81.34 6893 1.00 1.00 1.00 1.00 2.00 7.00 16.00 34.42 52.63

5429 1.00 1.00 1.00 1.00 4.00 12.00 25.50 48.30 62.30 6935 1.00 1.00 1.00 1.00 2.00 7.25 18.00 36.82 47.41

5431 -- -- 1.50 3.75 13.50 26.50 43.50 -- -- 6981 1.00 1.00 1.00 2.00 4.00 11.75 29.00 47.38 57.60

5461 1.00 1.00 1.00 2.00 5.00 14.00 29.00 56.08 64.54 7020 1.00 1.00 1.00 3.00 7.00 19.00 31.80 62.80 80.28

5463 1.00 1.00 1.00 1.00 3.00 11.00 23.00 44.40 53.00 7060 1.00 1.00 1.00 1.00 3.00 10.00 21.00 35.46 47.23

5471 -- -- 1.00 1.00 1.00 11.75 28.50 -- -- 7066 1.00 1.00 1.00 2.00 5.00 14.00 27.00 48.68 60.34

5477 -- -- 1.00 1.00 3.00 9.00 24.20 -- -- 7074 1.00 1.00 1.00 1.00 3.00 8.00 19.00 42.00 48.00

5528 1.00 1.00 1.00 2.00 4.00 11.00 23.00 42.94 49.00 7097 1.00 1.00 1.00 2.00 4.00 14.00 25.70 53.88 77.28

5579 -- -- -- -- 15.00 -- -- -- -- 7116 1.00 1.00 1.00 2.00 4.00 10.00 22.90 41.00 51.17

5580 -- -- 1.50 3.00 5.00 13.75 23.00 -- -- 7140 1.00 1.00 1.00 1.00 4.00 12.00 25.00 49.00 62.86

5589 1.00 1.00 1.00 1.00 2.00 7.00 19.00 37.72 61.90 7173 1.00 1.00 1.00 2.00 4.00 16.00 32.30 60.86 68.43

5590 1.00 1.00 1.00 2.00 3.00 13.00 22.20 47.20 57.36 7174 1.00 1.00 1.00 2.00 5.00 16.00 30.00 57.00 72.00

5591 1.00 1.00 1.00 2.00 3.00 6.00 19.00 41.00 55.79 7213 1.00 1.00 1.00 2.00 4.00 14.00 25.00 53.98 60.00

5592 1.00 1.00 1.00 2.00 3.00 7.00 18.00 41.16 51.58 7243 1.00 1.00 1.00 1.00 3.00 12.00 24.00 47.00 60.24

5594 1.00 1.00 1.00 1.00 2.00 4.00 16.00 37.48 50.18 7262 -- 1.00 1.00 1.00 1.00 7.00 19.00 52.20 --

5595 -- -- -- -- 1.50 -- -- -- -- 7274 1.00 1.00 1.00 1.00 4.00 10.00 21.40 36.76 49.00

5596 1.00 1.00 1.00 1.00 2.00 6.00 18.00 38.74 47.37 7300 1.00 1.00 1.00 2.00 4.00 10.00 21.00 39.16 50.00

5600 1.00 1.00 1.00 2.00 3.00 7.00 23.00 47.66 70.88 7311 -- -- 1.00 1.00 5.00 10.00 25.50 -- --

5618 -- -- 2.00 2.25 7.50 19.00 35.20 -- -- 7363 -- -- 1.10 3.25 7.00 20.25 34.00 -- --

5650 -- -- 1.00 3.00 6.00 11.00 16.00 -- -- 7422 1.00 1.00 1.00 1.00 4.00 12.00 25.00 50.04 60.02

5656 1.00 1.00 1.00 1.00 2.00 10.00 20.70 40.14 51.00 7431 1.00 1.00 1.00 1.00 3.00 9.00 20.00 39.34 51.00

5658 1.00 1.00 1.00 2.00 4.00 10.50 23.00 51.00 68.66 7481 1.00 1.00 1.00 1.00 3.00 8.00 18.80 44.00 49.48

5661 1.00 1.00 1.00 1.00 2.00 10.00 23.30 48.12 79.11 7497 1.00 1.00 1.00 1.00 3.00 12.00 23.00 44.60 61.60

5666 -- -- 1.00 2.00 4.00 16.25 25.70 -- -- 7498 1.00 1.00 1.00 1.00 3.00 11.00 23.00 46.00 48.32

5695 1.00 1.00 1.00 1.00 4.00 13.00 25.00 44.28 55.56 7499 1.00 1.00 1.00 1.00 3.00 11.00 23.60 42.00 52.00

5742 -- -- 1.00 1.00 5.00 19.25 34.70 -- -- 7531 1.00 1.00 1.00 2.00 6.00 16.50 34.80 56.80 68.66

5766 -- -- 2.00 5.00 17.00 22.00 28.00 -- -- 7534 1.00 1.00 1.00 1.00 3.00 12.25 24.50 53.10 67.20

5770 1.00 1.00 1.00 1.00 3.00 11.00 22.00 45.82 55.00 7556 1.00 1.00 1.00 1.00 4.00 11.00 22.00 40.98 49.99

5775 -- -- 1.00 1.00 3.00 6.00 16.70 -- -- 7594 1.00 1.00 1.00 2.00 4.00 12.00 25.00 50.00 60.00

5779 -- -- 1.00 1.00 7.00 16.00 29.00 -- -- 7596 1.00 1.00 1.00 1.50 3.00 9.50 24.00 49.08 71.24

5840 1.00 1.00 1.00 2.00 5.00 14.75 28.00 55.34 79.05 7608 1.00 1.00 1.00 1.00 4.00 12.00 23.00 46.00 52.96

5890 1.00 1.00 1.00 2.00 4.00 12.00 25.00 48.00 56.59 7622 -- -- 1.00 1.00 2.00 8.50 20.00 -- --

5891 1.00 1.00 1.00 2.00 3.00 10.00 16.70 40.34 58.63 7700 1.00 1.00 1.00 2.00 5.00 15.00 28.00 54.92 66.96

5897 1.00 1.00 1.00 1.00 3.00 12.00 23.00 43.00 49.90 7706 1.00 1.00 1.00 1.00 3.00 12.00 23.00 47.00 55.10

Appendix 4–5.4. Empirical distribution of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
286 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 -- 1.00 1.00 2.00 7.00 21.00 35.70 79.42 -- 8910 -- -- 2.00 3.00 5.00 9.50 15.80 -- --

7745 1.00 1.00 1.00 2.00 7.00 20.00 33.60 56.72 67.87 8911 1.00 1.00 1.00 1.00 4.00 10.00 21.40 42.00 53.74

7922 1.00 1.00 1.00 1.00 2.00 7.00 18.00 36.92 48.76 8924 1.00 1.00 1.00 1.00 2.00 5.00 16.00 34.24 39.81

7936 1.00 1.00 1.00 1.00 4.00 12.00 24.00 45.86 58.43 8929 -- -- 1.00 1.75 7.00 26.75 43.20 -- --

7943 1.00 1.00 1.00 2.00 4.00 13.00 26.00 51.00 58.45 8942 1.00 1.00 1.00 1.00 4.00 14.00 25.00 45.00 55.00

7944 -- 1.00 1.00 1.00 4.00 15.00 31.00 76.84 -- 8944 1.00 1.00 1.00 1.00 4.00 13.00 25.00 46.02 65.01

7945 1.00 1.00 1.00 2.00 5.00 17.00 30.00 64.26 76.00 8996 1.00 1.00 1.00 2.00 4.00 12.00 25.00 49.92 61.46

7947 1.00 1.00 1.00 1.00 4.00 12.00 27.00 60.92 67.46 9014 -- -- 2.00 4.25 8.00 13.75 26.20 -- --

7948 1.00 1.00 1.00 1.00 4.00 12.00 25.60 45.00 52.78 9037 1.00 1.00 1.00 1.00 3.00 8.00 19.00 47.96 69.00

7951 1.00 1.00 1.00 2.00 5.00 13.00 24.00 46.02 61.53 9106 1.00 1.00 1.00 2.00 3.00 9.00 25.80 53.44 88.26

7953 1.00 1.00 1.00 2.00 4.00 13.25 29.90 63.38 97.37 9107 -- -- 1.00 1.00 1.00 7.00 37.20 -- --

7981 1.00 1.00 1.00 1.00 4.00 12.00 26.30 65.02 80.37 9129 -- 1.00 1.00 1.00 3.00 17.00 28.40 45.52 --

7990 1.00 1.00 1.00 1.25 5.00 18.00 36.00 80.56 138.42 9163 1.00 1.00 1.00 1.00 4.00 12.00 24.00 44.84 53.00

7992 -- -- 3.00 4.00 7.00 15.25 39.00 -- -- 9213 1.00 1.00 1.00 1.00 7.00 13.75 37.00 73.00 86.00

7997 1.00 1.00 1.00 2.00 4.00 10.00 21.00 57.28 76.24 9214 -- -- 1.00 2.25 4.00 8.50 35.20 -- --

7999 -- -- 1.00 1.00 4.00 13.00 21.40 -- -- 9222 1.00 1.00 1.00 2.00 6.00 18.00 33.20 59.68 75.88

8022 -- 1.00 1.00 1.00 2.50 16.75 29.90 74.54 -- 9248 1.00 1.00 1.00 1.00 3.00 16.00 28.60 52.30 56.49

8023 1.00 1.00 1.00 1.00 3.00 9.00 21.00 44.76 55.38 9266 -- 1.00 1.00 2.00 5.00 15.00 28.00 58.80 --

8047 1.00 1.00 1.00 1.00 4.00 11.00 23.00 47.00 55.00 9270 1.00 1.00 1.00 1.00 2.00 7.00 19.00 41.00 50.22

8060 1.00 1.00 1.00 2.00 4.00 13.50 26.40 62.58 92.73 9295 -- 1.00 1.00 1.00 1.00 7.00 25.00 38.20 --

8062 -- -- 1.00 2.00 3.00 12.00 30.80 -- -- 9304 -- -- -- 3.50 5.50 10.50 -- -- --

8068 -- -- 1.00 1.00 3.00 11.25 22.50 -- -- 9307 1.00 1.00 1.00 1.75 4.00 11.00 24.40 41.42 52.99

8081 1.00 1.00 1.00 1.00 4.00 12.00 26.00 55.00 72.28 9328 1.00 1.00 1.00 1.00 3.00 13.00 29.20 66.10 90.55

8089 -- -- 1.00 1.75 4.00 13.00 21.00 -- -- 9329 -- -- 1.00 3.25 8.50 21.50 57.80 -- --

8221 -- -- 1.00 4.00 7.00 21.00 34.00 -- -- 9345 -- -- -- -- 10.00 -- -- -- --

8252 1.00 1.00 1.00 1.00 3.00 9.00 21.00 41.70 54.00 9363 1.00 1.00 1.00 1.00 4.00 15.00 30.00 56.00 78.24

8265 1.00 1.00 1.00 2.00 5.00 16.00 31.00 55.88 65.32 9364 1.00 1.00 1.00 1.00 4.00 13.00 27.00 54.00 67.00

8289 -- 1.00 1.00 1.00 4.00 12.00 24.80 51.78 -- 9365 -- -- 1.00 2.00 4.00 7.00 25.00 -- --

8305 1.00 1.00 1.00 1.00 2.00 7.00 20.00 35.00 43.00 9371 1.00 1.00 1.00 2.00 4.00 13.00 32.70 54.02 67.39

8335 1.00 1.00 1.00 2.00 6.00 16.00 29.00 56.68 66.52 9417 1.00 1.00 1.00 2.00 5.00 13.00 24.00 48.24 59.00

8400 1.00 1.00 1.00 1.00 2.00 7.00 19.30 46.72 73.88 9419 1.00 1.00 1.00 2.00 5.00 16.00 30.00 54.00 66.00

8445 1.00 1.00 1.00 2.00 5.00 14.00 28.00 51.16 67.08 9435 -- 1.00 1.00 1.00 3.00 7.00 25.60 57.72 --

8446 1.00 1.00 1.00 1.00 4.00 12.00 24.00 45.00 53.63 9491 1.00 1.00 1.00 2.00 4.00 13.00 26.00 49.92 55.38

8451 1.00 1.00 1.00 2.00 4.00 12.00 30.00 54.28 61.12 9499 1.00 1.00 1.00 1.00 3.00 10.00 22.00 42.00 51.38

8531 1.00 1.00 1.00 2.00 5.00 13.00 25.00 49.74 56.48 9522 -- -- 3.20 5.00 16.00 24.00 61.00 -- --

8541 -- 1.00 1.00 2.75 4.50 17.00 26.00 48.00 -- 9527 1.00 1.00 1.00 1.00 3.00 9.00 21.00 41.00 50.00

8544 1.00 1.00 1.00 2.00 4.00 14.00 26.00 55.92 73.92 9532 1.00 1.00 1.00 1.00 4.00 11.00 23.00 44.00 53.00

8545 -- -- 1.00 1.50 11.50 25.50 41.20 -- -- 9544 -- -- -- 1.00 3.00 17.00 -- -- --

8563 1.00 1.00 1.00 1.00 4.00 12.00 22.00 37.00 51.76 9565 1.00 1.00 1.00 1.00 3.00 10.00 22.00 42.20 57.60

8566 1.00 1.00 1.00 1.00 3.00 7.00 19.00 40.36 59.12 9570 1.00 1.00 1.00 1.00 2.00 8.00 21.00 36.28 48.60

8583 1.00 1.00 1.00 1.00 3.00 11.75 22.00 43.62 53.31 9574 -- -- 1.00 1.00 2.50 11.00 15.40 -- --

8584 1.00 1.00 1.00 1.00 3.00 11.00 24.00 44.38 55.69 9588 1.00 1.00 1.00 1.00 3.00 11.00 27.00 52.00 66.00

8623 1.00 1.00 1.00 1.00 4.00 12.00 23.00 46.00 56.00 9665 1.00 1.00 1.00 2.00 4.00 13.00 26.00 49.66 58.83

8625 1.00 1.00 1.00 2.00 5.00 13.00 26.00 48.14 58.28 9715 1.00 1.00 1.00 2.00 4.00 12.00 23.00 43.00 50.00

8630 1.00 1.00 1.00 1.00 3.00 10.00 20.00 36.80 43.70 9729 1.00 1.00 1.00 2.00 5.00 14.00 26.00 50.00 60.00

8631 1.00 1.00 1.00 2.00 4.00 11.00 25.00 52.48 66.00 9772 1.00 1.00 1.00 2.00 4.00 12.00 24.00 52.92 73.48

8646 1.00 1.00 1.00 2.00 5.00 12.00 23.00 48.00 54.78 9814 -- -- 1.30 2.25 5.50 15.75 25.70 -- --

8647 1.00 1.00 1.00 1.00 3.00 10.00 20.00 38.38 47.57 9815 1.00 1.00 1.00 2.00 5.00 14.00 29.00 60.00 73.32

8677 1.00 1.00 1.00 3.00 7.00 18.00 29.40 57.08 68.26 9816 -- 1.00 1.00 1.00 3.00 12.00 19.00 41.56 --

8696 -- -- 1.00 2.00 8.00 15.00 21.60 -- -- 9817 1.00 1.00 1.00 1.00 3.00 11.00 22.00 42.00 54.14

8743 1.00 1.00 1.00 2.00 5.00 15.00 26.00 53.00 62.53 9829 1.00 1.00 1.00 1.00 3.00 8.00 20.00 49.00 58.00

8761 1.00 1.00 1.00 1.00 3.00 8.00 18.00 37.00 47.75 9830 1.00 1.00 1.00 1.00 3.00 7.25 17.30 35.90 71.73

8778 1.00 1.00 1.00 1.00 4.00 13.00 24.00 47.00 57.02 9858 1.00 1.00 1.00 2.00 4.00 9.00 22.00 44.00 51.00

8845 1.00 1.00 1.00 1.00 4.00 14.00 27.00 55.56 70.28 9893 1.00 1.00 1.00 1.00 4.00 12.00 24.00 46.00 58.34

8859 1.00 1.00 1.00 2.00 5.00 15.00 30.00 55.00 69.20 9916 1.00 1.00 1.00 1.00 5.00 14.00 25.00 42.34 52.34

8898 1.00 1.00 1.00 2.00 6.00 15.00 27.00 54.00 70.78 9976 1.00 1.00 1.00 1.00 3.00 10.00 24.00 45.86 57.86

8908 -- -- 1.00 2.00 6.00 20.00 31.40 -- --

Appendix 4–5.4. Empirical distribution of storm duration defined by 18-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 287

Appendix 4–5.5. Empirical distribution of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- -- 5.00 13.00 43.00 -- -- -- 1154 1.00 1.00 1.00 1.00 12.50 25.00 49.00 103.98 171.46

0016 1.00 1.00 1.00 2.00 6.00 18.00 36.00 66.20 81.00 1165 1.00 1.00 1.00 2.00 5.00 16.00 30.00 65.00 76.44

0050 1.00 1.00 1.00 2.00 6.00 17.00 32.00 61.20 78.60 1185 1.00 1.00 1.00 1.00 2.00 7.00 19.00 41.84 53.38

0054 -- -- 1.00 1.50 7.00 26.00 49.20 -- -- 1186 -- 1.00 1.00 2.00 5.00 23.00 34.80 84.64 --

0120 -- -- 3.20 5.00 19.00 45.00 98.80 -- -- 1188 -- -- -- 1.00 7.00 33.50 -- -- --

0145 1.00 1.00 1.00 1.00 1.00 25.00 44.80 106.94 139.90 1245 -- -- 2.10 4.50 13.00 39.00 62.50 -- --

0146 -- -- 1.80 4.50 8.00 25.50 32.00 -- -- 1246 1.00 1.00 1.00 1.00 4.00 17.00 31.00 54.64 67.30

0174 1.00 1.00 1.00 1.00 2.00 17.00 30.00 67.00 79.88 1267 1.00 1.00 1.00 2.00 4.00 14.75 30.00 61.82 82.82

0178 -- -- 1.00 1.00 3.00 39.25 59.00 -- -- 1304 1.00 1.00 1.00 2.00 6.50 21.75 38.00 64.00 76.29

0179 1.00 1.00 1.00 2.00 3.00 14.00 28.90 76.84 92.41 1325 1.00 1.00 1.00 2.00 6.00 21.00 36.00 69.30 84.65

0202 1.00 1.00 1.00 1.00 2.00 12.00 25.00 58.56 71.77 1429 1.00 1.00 1.00 2.00 4.00 16.00 32.00 69.00 82.06

0206 1.00 1.00 1.00 1.00 4.00 15.00 29.00 52.10 64.05 1431 1.00 1.00 1.00 2.00 6.00 19.00 36.00 72.24 87.24

0208 -- -- -- -- 7.00 -- -- -- -- 1432 1.00 1.00 1.00 2.00 6.00 21.00 37.00 64.64 87.32

0211 1.00 1.00 1.00 2.00 5.00 18.00 33.00 61.00 74.12 1433 1.00 1.00 1.00 2.00 6.00 21.00 35.00 68.00 81.00

0244 -- 1.00 1.30 2.75 10.00 26.25 48.80 127.40 -- 1434 1.00 1.00 1.00 2.00 6.00 19.00 35.00 68.00 79.10

0248 1.00 1.00 1.00 1.00 3.00 11.00 25.00 51.00 66.00 1435 1.00 1.00 1.00 2.00 6.00 20.00 34.00 69.10 80.55

0262 1.00 1.00 1.00 2.00 6.00 17.00 32.00 60.00 72.88 1436 1.00 1.00 1.00 3.00 6.00 21.00 36.00 69.00 83.00

0271 -- -- 1.60 4.00 16.00 32.00 66.40 -- -- 1437 -- -- 1.00 2.00 4.00 15.50 34.60 -- --

0380 1.00 1.00 1.00 2.00 5.00 15.75 31.00 64.40 75.40 1438 1.00 1.00 1.00 2.00 6.00 20.00 33.00 68.00 86.18

0394 -- -- -- 4.00 15.00 27.00 -- -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- 1.90 3.00 14.00 31.00 61.50 -- -- 1492 1.00 1.00 1.00 1.00 3.00 13.25 29.00 59.14 76.71

0427 -- -- 1.00 1.00 4.50 19.50 52.00 -- -- 1500 -- -- 1.90 2.00 6.00 27.50 121.00 -- --

0428 1.00 1.00 1.00 2.00 7.00 23.00 41.00 78.00 96.00 1528 1.00 1.00 1.00 1.00 3.00 12.00 28.00 59.20 79.80

0429 1.00 1.00 1.00 3.00 10.00 28.00 50.00 86.52 105.88 1541 -- -- 1.00 1.00 7.00 29.75 44.10 -- --

0463 -- 1.00 1.00 1.00 3.00 12.00 33.10 83.60 -- 1569 1.00 1.00 1.00 2.00 6.00 22.00 39.40 62.16 80.08

0493 -- -- 1.40 4.00 12.00 29.50 56.20 -- -- 1632 -- -- -- 1.00 1.00 9.75 -- -- --

0495 1.00 1.00 1.00 1.00 3.00 15.00 25.60 61.84 74.32 1641 1.00 1.00 1.00 2.00 4.00 14.00 28.00 67.04 92.68

0496 -- -- 1.00 1.00 1.00 2.50 24.00 -- -- 1646 1.00 1.00 1.00 1.00 3.00 12.00 26.00 47.00 62.12

0498 -- -- 1.00 1.00 1.00 5.50 28.90 -- -- 1663 -- -- 1.00 1.25 13.00 27.50 45.70 -- --

0509 1.00 1.00 1.00 2.00 5.00 18.00 33.00 66.00 78.00 1671 1.00 1.00 1.00 1.00 5.00 19.00 33.00 66.00 78.46

0518 1.00 1.00 1.00 1.00 5.00 16.00 31.00 58.00 74.07 1680 1.00 1.00 1.00 2.00 6.00 18.00 32.00 66.00 76.97

0521 -- -- 1.00 3.00 5.00 17.00 22.00 -- -- 1694 1.00 1.00 1.00 1.00 4.00 14.50 34.00 43.40 62.90

0556 -- 1.00 1.00 2.25 6.00 19.00 31.70 58.38 -- 1696 1.00 1.00 1.00 2.00 4.00 14.00 31.00 67.00 75.00

0569 1.00 1.00 1.00 1.00 4.00 17.00 33.00 62.98 77.98 1697 -- 1.00 1.00 2.00 3.00 11.25 28.20 51.26 --

0572 1.00 1.00 1.00 2.00 5.50 19.00 38.00 66.00 75.66 1698 1.00 1.00 1.00 1.00 4.00 16.00 29.00 57.00 67.24

0576 1.00 1.00 1.00 2.00 7.00 24.00 43.00 95.60 101.76 1720 1.00 1.00 1.00 1.00 2.00 13.50 33.20 67.44 78.42

0580 1.00 1.00 1.00 2.00 6.00 15.50 34.00 57.60 66.80 1761 -- 1.00 1.00 1.00 7.00 25.00 38.00 76.12 --

0587 1.00 1.00 1.00 3.00 7.00 20.00 34.00 74.00 94.49 1773 1.00 1.00 1.00 2.00 6.00 17.00 31.00 59.14 72.57

0605 1.00 1.00 1.00 2.00 6.00 20.00 27.80 56.88 114.82 1810 -- -- 1.00 3.50 7.00 23.50 57.80 -- --

0639 1.00 1.00 1.00 1.00 3.00 15.00 30.00 59.00 75.00 1823 -- -- 2.00 2.75 7.00 18.75 35.40 -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 1.00 1.00 1.00 2.25 7.00 20.00 41.70 65.32 84.66

0665 1.00 1.00 1.00 2.00 5.00 17.00 32.70 63.00 75.00 1875 -- -- 2.00 5.00 8.00 23.50 49.00 -- --

0689 1.00 1.00 1.00 1.00 4.00 18.00 37.00 70.00 82.67 1876 -- -- 1.00 3.00 11.00 26.00 44.00 -- --

0690 1.00 1.00 1.00 1.00 2.00 14.00 26.10 52.04 78.57 1889 1.00 1.00 1.00 2.00 11.00 25.50 53.80 119.64 129.90

0691 1.00 1.00 1.00 2.00 5.00 15.25 30.70 59.74 76.37 1903 1.00 1.00 1.00 1.00 2.00 10.00 23.00 49.60 59.60

0708 1.00 1.00 1.00 1.00 4.00 13.00 24.50 57.90 89.75 1914 -- -- 2.70 3.25 7.50 23.75 52.20 -- --

0738 1.00 1.00 1.00 2.00 6.00 18.00 32.00 62.26 74.26 1920 1.00 1.00 1.00 2.00 5.00 18.00 30.00 67.00 101.84

0776 1.00 1.00 1.00 1.00 3.00 13.00 27.00 51.00 58.50 1921 1.00 1.00 1.00 2.00 5.00 17.00 31.00 60.00 71.00

0779 1.00 1.00 1.00 1.00 3.00 13.75 25.00 49.00 55.15 1937 1.00 1.00 1.00 2.00 7.00 19.00 34.00 70.68 85.36

0784 1.00 1.00 1.00 1.00 3.00 11.50 27.00 52.00 69.30 1956 1.00 1.00 1.00 2.00 6.00 19.00 34.00 66.00 84.07

0786 1.00 1.00 1.00 2.00 4.00 17.00 31.80 53.98 66.96 1970 -- -- 1.00 2.00 6.00 11.00 73.00 -- --

0917 1.00 1.00 1.00 2.00 7.00 21.50 37.00 72.00 83.98 2014 1.00 1.00 1.00 1.00 4.00 19.00 37.00 74.56 77.28

0923 -- -- 1.10 2.75 14.50 25.50 60.90 -- -- 2015 1.00 1.00 1.00 2.00 5.00 22.00 41.00 75.00 97.40

0926 1.00 1.00 1.00 2.00 5.00 17.00 31.00 59.00 72.00 2019 -- -- 1.00 2.75 10.00 22.75 80.30 -- --

0950 -- -- 2.00 2.00 3.00 7.25 26.10 -- -- 2024 1.00 1.00 1.00 2.00 5.00 17.00 32.00 59.00 69.00

0996 -- -- 2.80 3.50 8.00 35.00 69.00 -- -- 2042 -- -- 1.00 1.00 3.00 13.00 28.60 -- --

1013 1.00 1.00 1.00 1.00 2.00 10.00 26.00 65.68 80.64 2043 -- 1.00 1.00 1.00 2.00 13.00 27.90 50.78 --

1017 1.00 1.00 1.00 1.00 5.00 17.00 31.00 64.00 78.00 2048 1.00 1.00 1.00 1.00 3.00 15.00 33.00 62.96 74.00

1042 -- -- 3.40 4.50 13.00 40.00 128.40 -- -- 2050 -- 1.00 1.00 1.00 7.00 19.00 43.00 105.90 --

1048 -- -- 2.00 3.75 10.00 24.25 35.70 -- -- 2051 -- 1.00 1.00 1.75 3.00 9.00 30.10 49.28 --

1053 1.00 1.00 1.00 2.00 5.00 17.00 35.00 64.72 80.00 2053 -- -- -- 1.00 8.00 26.00 -- -- --

1057 1.00 1.00 1.00 2.00 5.00 16.00 32.00 61.00 74.00 2073 1.00 1.00 1.00 2.00 5.00 20.00 31.30 61.86 72.00

1063 -- -- 1.00 5.00 13.00 49.00 65.80 -- -- 2082 1.00 1.00 1.00 1.00 3.00 11.00 25.00 46.00 62.41

1068 1.00 1.00 1.00 2.00 5.00 17.00 31.00 59.96 74.44 2086 1.00 1.00 1.00 1.00 5.00 17.00 31.00 62.00 77.00

1080 1.00 1.00 1.00 1.00 2.00 16.00 29.00 59.96 72.44 2088 -- -- 1.00 1.00 6.00 26.25 40.70 -- --

1081 1.00 1.00 1.00 2.00 6.00 18.00 33.00 64.00 81.00 2090 1.00 1.00 1.00 1.00 4.00 14.50 26.80 65.96 104.60

1133 -- -- 1.00 1.00 5.50 20.25 51.50 -- -- 2096 1.00 1.00 1.00 2.00 6.00 16.00 31.00 63.00 72.04

1136 1.00 1.00 1.00 1.00 6.00 23.00 44.00 87.86 109.43 2128 1.00 1.00 1.00 3.00 8.00 22.00 39.30 65.64 72.33

1138 -- -- 2.00 4.75 9.00 21.50 51.50 -- -- 2131 1.00 1.00 1.00 1.00 4.00 15.00 29.00 55.40 68.20

1139 -- 1.00 1.00 2.25 10.00 26.50 45.70 66.48 -- 2142 -- -- 2.00 4.00 8.00 13.00 77.60 -- --

Appendix 4–5.5. Empirical distribution of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in 

Texas.

[--, not available]
288 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 1.00 1.00 7.00 42.00 55.00 -- -- 3463 -- -- 1.00 2.00 6.00 18.00 29.00 -- --

2206 1.00 1.00 1.00 2.00 5.00 18.00 34.00 64.42 72.71 3476 1.00 1.00 1.00 2.00 5.00 15.75 34.00 61.36 77.00

2238 1.00 1.00 1.00 1.00 5.00 19.25 34.10 82.06 89.09 3485 -- -- 1.80 6.50 11.00 23.50 49.80 -- --

2240 -- 1.00 1.00 1.00 7.00 19.00 41.80 77.80 -- 3507 1.00 1.00 1.00 1.00 4.00 16.00 31.00 58.84 71.40

2242 1.00 1.00 1.00 2.00 7.00 20.00 35.00 61.00 72.43 3546 1.00 1.00 1.00 2.00 6.00 18.00 33.30 66.86 80.43

2244 1.00 1.00 1.00 2.00 6.00 19.00 35.00 65.00 80.00 3547 1.00 1.00 1.00 1.00 4.00 12.00 27.80 60.36 88.52

2247 -- -- 1.00 3.50 7.00 27.00 40.20 -- -- 3579 -- 1.00 1.00 2.00 6.50 21.50 47.00 101.88 --

2309 1.00 1.00 1.00 2.00 6.00 17.00 35.40 68.88 81.52 3642 1.00 1.00 1.00 2.00 6.00 17.00 31.00 60.00 75.00

2312 1.00 1.00 1.00 1.00 6.00 17.00 30.00 62.90 90.10 3646 1.00 1.00 1.00 2.00 6.00 16.00 31.00 63.86 74.93

2334 -- 1.00 1.00 1.00 6.00 21.00 28.60 34.92 -- 3668 -- -- 2.70 4.00 8.00 36.50 63.40 -- --

2336 1.00 1.00 1.00 1.00 4.00 14.00 28.50 53.30 70.25 3673 -- -- 1.00 4.00 12.00 47.00 51.00 -- --

2354 -- -- 1.00 2.00 4.50 20.50 43.10 -- -- 3686 1.00 1.00 1.00 1.00 5.00 15.00 30.00 56.00 69.73

2355 -- -- 1.00 2.00 4.00 29.00 57.00 -- -- 3691 1.00 1.00 1.00 1.00 5.00 16.00 29.00 56.00 67.56

2357 1.00 1.00 1.00 1.00 4.00 19.00 39.80 68.00 75.78 3734 -- -- 1.00 2.00 9.00 29.00 77.00 -- --

2360 1.00 1.00 1.00 2.00 5.00 20.00 34.00 67.00 84.18 3771 1.00 1.00 1.00 1.00 4.00 16.00 31.00 52.00 58.42

2361 1.00 1.00 1.00 1.00 3.00 15.00 28.00 62.72 92.64 3789 -- 1.00 1.00 1.00 1.00 13.00 37.00 106.60 --

2394 1.00 1.00 1.00 2.00 6.00 18.00 33.00 61.00 73.85 3826 1.00 1.00 1.00 2.00 5.00 14.00 30.60 70.96 75.12

2404 1.00 1.00 1.00 2.00 5.00 17.00 31.80 55.00 66.16 3831 1.00 1.00 1.00 2.00 5.00 17.25 38.00 67.38 73.38

2415 1.00 1.00 1.00 2.00 6.00 17.00 31.00 57.58 72.16 3841 1.00 1.00 1.00 1.00 4.00 14.00 26.60 47.04 75.86

2462 1.00 1.00 1.00 2.00 5.00 16.00 32.00 65.60 73.60 3871 1.00 1.00 1.00 2.00 5.00 18.00 34.00 64.52 80.26

2528 -- 1.00 1.00 1.00 5.00 16.50 47.20 63.68 -- 3884 -- -- 1.00 3.75 7.00 14.50 28.00 -- --

2617 1.00 1.00 1.00 2.00 6.00 16.00 33.40 53.68 56.84 3941 -- 1.00 1.00 3.00 9.00 17.00 43.60 102.16 --

2619 1.00 1.00 1.00 1.00 5.00 15.00 30.70 74.56 86.75 3963 -- -- -- 1.00 1.00 18.00 -- -- --

2621 1.00 1.00 1.00 1.00 4.00 15.00 29.00 55.32 65.32 4040 1.00 1.00 1.00 2.00 5.00 15.00 27.00 53.14 67.10

2675 1.00 1.00 1.00 2.00 5.00 17.00 30.00 67.00 87.84 4058 -- -- 1.00 3.00 5.00 27.00 47.20 -- --

2676 1.00 1.00 1.00 1.00 3.00 16.00 30.00 66.00 85.44 4098 1.00 1.00 1.00 1.00 3.00 11.00 26.00 51.00 59.44

2679 1.00 1.00 1.00 1.00 4.00 15.00 29.00 58.12 74.06 4100 1.00 1.00 1.00 2.00 5.00 14.00 26.00 50.00 55.00

2715 1.00 1.00 1.00 2.00 5.00 16.00 28.40 54.00 68.14 4137 1.00 1.00 1.00 1.00 4.00 16.00 28.00 48.80 62.70

2744 1.00 1.00 1.00 1.00 4.00 14.00 29.00 63.00 79.22 4191 1.00 1.00 1.00 1.00 4.00 17.00 30.80 60.76 75.00

2758 -- 1.00 1.00 2.00 4.00 17.00 47.00 94.30 -- 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- 1.00 1.00 4.00 10.00 24.80 -- -- 4257 1.00 1.00 1.00 1.00 6.00 18.00 32.00 59.64 72.00

2797 1.00 1.00 1.00 1.00 4.00 16.00 29.00 53.00 66.72 4258 1.00 1.00 1.00 1.00 8.00 24.00 42.50 76.90 100.15

2811 1.00 1.00 1.00 1.00 3.00 15.00 30.00 60.48 75.24 4278 1.00 1.00 1.00 2.00 5.00 15.00 29.80 59.76 67.76

2813 -- -- 1.00 1.00 4.00 14.00 33.20 -- -- 4299 1.00 1.00 1.00 1.00 3.00 6.75 25.40 43.66 50.35

2814 -- -- 1.00 1.00 1.00 21.00 33.40 -- -- 4300 1.00 1.00 1.00 2.00 7.00 23.00 43.00 83.24 99.00

2815 1.00 1.00 1.00 1.00 3.00 13.00 25.00 44.34 58.78 4305 1.00 1.00 1.00 2.00 8.00 24.00 45.00 81.00 99.68

2818 1.00 1.00 1.00 1.00 4.00 11.50 25.40 53.72 130.52 4307 1.00 1.00 1.00 1.00 7.00 25.00 49.00 91.68 111.73

2986 1.00 1.00 1.00 2.00 7.00 21.00 41.00 65.50 94.50 4309 1.00 1.00 1.00 2.00 5.00 19.00 34.70 66.00 76.00

3005 1.00 1.00 1.00 1.00 4.00 14.00 28.00 55.00 68.52 4311 1.00 1.00 1.00 2.00 6.00 20.00 34.00 70.00 77.00

3033 1.00 1.00 1.00 2.00 3.00 8.00 24.60 39.64 49.16 4313 1.00 1.00 1.00 3.00 8.00 23.00 39.60 58.44 64.72

3034 -- -- -- -- 1.00 -- -- -- -- 4319 -- 1.00 1.00 3.00 6.50 23.00 42.50 83.50 --

3047 -- -- 1.90 4.50 10.50 39.00 97.00 -- -- 4329 1.00 1.00 1.00 2.00 5.00 19.00 35.00 71.00 80.00

3103 -- -- 1.00 1.00 5.00 13.00 33.60 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 1.00 1.00 1.00 2.00 6.00 17.00 33.90 63.00 74.09 4375 1.00 1.00 1.00 1.00 3.00 14.00 27.00 61.26 74.39

3156 1.00 1.00 1.00 1.00 6.00 18.75 32.00 72.68 93.39 4392 1.00 1.00 1.00 3.00 8.00 22.00 35.00 79.00 112.20

3171 1.00 1.00 1.00 2.00 6.00 17.00 33.00 60.64 72.00 4425 1.00 1.00 1.00 1.00 2.00 12.00 26.00 49.00 65.72

3189 1.00 1.00 1.00 1.00 4.00 17.00 32.00 72.84 101.00 4440 1.00 1.00 1.00 2.00 6.00 19.00 32.00 67.00 82.28

3260 1.00 1.00 1.00 2.00 5.00 17.00 31.00 58.08 68.24 4476 1.00 1.00 1.00 1.00 4.00 16.00 30.00 53.00 65.00

3267 -- 1.00 1.00 2.00 4.00 18.75 34.10 76.48 -- 4498 -- -- 1.00 1.00 3.00 10.00 27.80 -- --

3270 1.00 1.00 1.00 1.00 3.00 12.00 25.00 47.26 61.63 4517 1.00 1.00 1.00 2.00 5.00 18.00 33.00 62.60 69.60

3272 -- -- 1.00 1.00 4.00 18.00 31.40 -- -- 4520 1.00 1.00 1.00 1.00 4.00 16.00 29.00 48.00 60.52

3277 -- -- 1.00 1.00 7.00 19.00 39.40 -- -- 4525 -- -- 1.00 2.00 6.00 30.00 128.60 -- --

3278 1.00 1.00 1.00 1.00 3.00 10.00 26.00 54.00 74.54 4563 -- -- 1.00 2.00 5.00 9.00 24.20 -- --

3280 1.00 1.00 1.00 1.00 3.00 7.00 23.40 60.56 69.13 4570 1.00 1.00 1.00 1.00 4.00 15.00 29.00 58.28 74.46

3281 -- -- 1.00 1.00 2.00 5.00 20.40 -- -- 4577 1.00 1.00 1.00 2.00 5.00 17.00 31.00 68.00 76.00

3283 1.00 1.00 1.00 2.00 7.00 21.00 38.00 76.00 85.25 4591 1.00 1.00 1.00 2.00 7.00 20.00 34.20 71.84 86.42

3284 1.00 1.00 1.00 1.00 5.00 17.00 32.00 63.00 78.65 4670 1.00 1.00 1.00 1.00 4.00 15.00 28.00 56.00 69.00

3285 1.00 1.00 1.00 1.00 5.00 16.00 29.20 55.04 67.08 4671 1.00 1.00 1.00 1.00 7.00 19.00 35.50 70.24 86.86

3329 1.00 1.00 1.00 2.00 6.00 19.00 33.00 68.56 80.78 4679 1.00 1.00 1.00 1.00 5.00 17.00 31.00 53.26 67.26

3335 1.00 1.00 1.00 2.75 7.00 21.00 35.00 77.50 87.75 4696 -- -- 1.00 1.00 3.50 27.50 50.00 -- --

3370 1.00 1.00 1.00 2.00 5.00 16.00 30.00 52.00 67.47 4703 1.00 1.00 1.00 1.00 4.00 13.00 26.00 46.92 113.24

3410 1.00 1.00 1.00 1.00 4.00 14.00 28.00 55.00 63.00 4704 1.00 1.00 1.00 2.00 8.00 22.00 42.00 74.76 90.00

3415 1.00 1.00 1.00 1.00 5.00 16.00 30.00 56.00 70.00 4731 -- 1.00 1.00 1.25 11.00 25.00 36.30 77.62 --

3430 1.00 1.00 1.00 2.00 7.00 21.00 39.00 73.00 86.88 4792 1.00 1.00 1.00 1.00 4.00 15.00 28.00 54.00 69.00

3431 1.00 1.00 1.00 1.00 7.00 28.75 55.00 98.80 153.70 4819 1.00 1.00 1.00 1.00 6.00 17.00 32.00 65.00 73.00

3441 -- -- 1.00 1.00 5.50 21.00 48.90 -- -- 4852 -- -- 1.00 1.00 1.00 6.00 29.40 -- --

3442 1.00 1.00 1.00 2.00 6.00 15.00 31.00 56.46 64.65 4866 1.00 1.00 1.00 2.00 5.00 17.00 32.00 60.00 76.00

3446 1.00 1.00 1.00 2.00 4.00 10.00 25.30 51.92 61.53 4876 1.00 1.00 1.00 1.00 5.50 17.25 30.00 69.04 81.01

3460 -- -- 1.00 2.00 9.00 24.00 32.20 -- -- 4878 1.00 1.00 1.00 2.00 7.00 22.00 39.00 73.66 90.33

3462 1.00 1.00 1.00 2.00 6.00 17.00 32.80 62.48 66.43 4880 1.00 1.00 1.00 1.00 4.00 13.00 29.00 58.00 70.01

Appendix 4–5.5. Empirical distribution of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 289

4920 1.00 1.00 1.00 1.00 4.00 15.00 29.00 59.42 70.63 5957 1.00 1.00 1.00 1.00 4.00 14.00 28.00 55.00 66.89

4934 -- -- -- 1.00 6.00 17.00 -- -- -- 5958 1.00 1.00 1.00 2.00 5.00 21.00 33.00 66.04 71.56

4972 1.00 1.00 1.00 2.00 5.00 15.00 31.00 54.82 68.00 5973 -- 1.00 1.00 3.00 7.00 18.50 41.80 87.32 --

4973 1.00 1.00 1.00 3.00 6.00 19.00 30.00 55.76 72.47 5996 1.00 1.00 1.00 2.00 5.00 16.00 31.00 57.00 74.00

4974 1.00 1.00 1.00 2.00 4.00 14.75 30.00 60.00 77.92 6017 1.00 1.00 1.00 2.00 3.00 13.75 28.80 56.14 94.67

4975 1.00 1.00 1.00 1.00 5.00 16.00 31.00 52.00 62.00 6024 1.00 1.00 1.00 2.00 9.00 21.00 34.00 70.22 72.00

4978 1.00 1.00 1.00 1.00 4.00 15.00 29.80 77.28 141.67 6050 -- -- 1.00 5.00 8.00 13.00 19.00 -- --

4979 -- -- 2.40 5.00 8.00 24.75 82.90 -- -- 6104 1.00 1.00 1.00 1.00 3.00 18.00 33.00 73.00 82.52

4982 1.00 1.00 1.00 2.00 5.00 16.00 27.00 51.80 61.90 6108 1.00 1.00 1.00 1.00 5.00 17.00 31.00 59.20 72.00

5018 1.00 1.00 1.00 2.00 5.00 17.00 31.00 57.56 70.67 6136 1.00 1.00 1.00 1.00 3.00 13.00 27.00 53.00 61.73

5048 1.00 1.00 1.00 1.00 3.00 13.00 26.00 53.00 67.75 6166 -- 1.00 1.00 2.00 5.00 21.00 31.20 56.48 --

5049 -- 1.00 1.00 1.00 2.00 8.00 17.30 38.86 -- 6176 1.00 1.00 1.00 2.00 7.00 20.00 31.30 75.14 97.65

5056 -- -- -- 2.50 8.00 18.50 -- -- -- 6177 1.00 1.00 1.00 2.00 5.00 17.00 32.00 69.48 84.00

5057 1.00 1.00 1.00 1.00 5.00 21.00 39.00 70.00 93.00 6210 1.00 1.00 1.00 1.00 5.00 16.00 31.00 53.34 62.67

5060 1.00 1.00 1.00 2.00 5.00 22.00 37.90 105.56 123.38 6211 1.00 1.00 1.00 2.00 6.00 23.00 42.50 82.30 94.40

5081 1.00 1.00 1.00 3.00 8.00 21.00 37.00 76.00 83.50 6270 1.00 1.00 1.00 1.00 6.00 18.00 32.00 61.00 71.38

5094 1.00 1.00 1.00 1.00 5.00 16.00 29.00 54.00 67.60 6275 -- -- -- -- .00 -- -- -- --

5113 1.00 1.00 1.00 1.00 4.00 17.00 33.00 66.54 77.54 6276 -- -- 1.00 3.25 7.00 26.00 56.60 -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 1.00 1.00 1.00 2.00 6.00 18.00 31.00 61.00 75.42

5123 -- -- 1.00 1.75 3.00 11.75 28.00 -- -- 6434 -- -- 2.60 5.00 8.00 18.00 33.80 -- --

5192 1.00 1.00 1.00 2.00 5.00 16.00 30.00 53.38 63.19 6504 1.00 1.00 1.00 1.00 3.00 14.00 28.00 55.08 68.00

5193 1.00 1.00 1.00 2.00 5.00 18.00 34.00 65.00 78.14 6558 -- -- 1.00 1.00 8.00 28.00 40.60 -- --

5224 1.00 1.00 1.00 2.00 6.00 19.00 34.00 75.72 107.68 6615 1.00 1.00 1.00 1.00 3.00 12.00 27.00 57.20 69.55

5228 1.00 1.00 1.00 1.00 4.00 16.00 33.00 53.90 90.90 6660 -- 1.00 1.00 2.00 7.00 24.00 50.20 67.84 --

5235 -- -- 1.00 2.00 12.00 29.00 45.40 -- -- 6663 -- 1.00 1.00 1.00 10.00 32.50 49.00 83.40 --

5247 1.00 1.00 1.00 1.00 4.00 14.00 27.00 56.00 68.22 6734 1.00 1.00 1.00 2.00 5.00 17.00 30.80 58.12 75.04

5258 1.00 1.00 1.00 2.00 6.00 18.00 31.00 62.94 77.47 6736 1.00 1.00 1.00 1.00 3.00 11.00 27.00 51.50 59.75

5303 1.00 1.00 1.00 2.00 5.00 17.75 34.00 66.02 80.51 6740 -- -- 1.30 3.50 7.50 34.75 100.30 -- --

5312 1.00 1.00 1.00 1.00 3.00 13.00 27.00 57.88 71.44 6750 1.00 1.00 1.00 1.00 7.00 25.00 44.80 69.16 119.98

5341 -- -- 1.00 3.00 5.00 26.00 81.00 -- -- 6757 1.00 1.00 1.00 2.00 6.00 19.00 35.00 67.00 81.60

5342 -- -- -- -- .00 -- -- -- -- 6775 1.00 1.00 1.00 2.00 5.00 19.00 31.30 67.94 75.31

5348 1.00 1.00 1.00 1.00 5.00 17.00 30.00 61.00 77.80 6776 1.00 1.00 1.00 1.00 4.00 13.00 28.00 56.00 65.89

5358 1.00 1.00 1.00 2.00 4.00 12.75 29.00 54.94 64.00 6788 1.00 1.00 1.00 3.00 6.00 16.00 28.60 53.60 61.36

5398 1.00 1.00 1.00 2.00 6.00 20.00 36.00 69.52 89.26 6792 1.00 1.00 1.00 1.00 2.00 10.00 25.00 48.00 63.00

5410 1.00 1.00 1.00 1.00 3.00 12.00 27.00 53.66 66.00 6794 -- -- 1.00 6.75 20.00 46.00 93.90 -- --

5411 1.00 1.00 1.00 2.00 5.00 18.00 32.00 70.64 80.32 6834 1.00 1.00 1.00 1.00 5.00 16.00 29.00 54.70 61.35

5424 1.00 1.00 1.00 1.00 9.00 25.00 58.20 113.84 146.96 6893 1.00 1.00 1.00 1.00 2.00 9.00 23.00 50.88 67.88

5429 1.00 1.00 1.00 2.00 5.00 19.00 35.20 66.00 79.16 6935 1.00 1.00 1.00 1.00 3.00 11.00 26.00 50.68 60.84

5431 -- -- 1.50 3.75 13.50 26.50 43.50 -- -- 6981 1.00 1.00 1.00 2.00 4.00 18.00 34.10 67.86 107.03

5461 1.00 1.00 1.00 2.00 6.00 16.00 34.50 63.90 82.35 7020 1.00 1.00 1.00 3.00 8.00 22.00 46.20 75.52 82.44

5463 1.00 1.00 1.00 1.00 4.00 15.00 29.00 52.00 59.99 7060 1.00 1.00 1.00 1.00 3.00 13.00 28.00 51.68 63.00

5471 -- -- 1.00 1.00 2.00 28.75 46.20 -- -- 7066 1.00 1.00 1.00 2.00 6.00 18.00 33.00 61.00 73.00

5477 -- -- 1.00 1.00 3.00 17.50 68.80 -- -- 7074 1.00 1.00 1.00 1.00 3.00 11.00 26.00 52.00 62.00

5528 1.00 1.00 1.00 2.00 5.00 15.00 29.50 51.00 59.00 7097 -- 1.00 1.00 2.00 5.50 21.00 29.70 62.72 --

5579 -- -- -- -- 15.00 -- -- -- -- 7116 1.00 1.00 1.00 2.00 5.00 16.00 29.60 49.72 61.44

5580 -- -- 1.10 2.25 5.50 31.00 50.80 -- -- 7140 1.00 1.00 1.00 2.00 4.00 18.00 33.00 68.00 79.00

5589 1.00 1.00 1.00 1.00 3.00 13.00 23.80 52.28 70.60 7173 1.00 1.00 1.00 2.00 8.00 25.00 47.00 73.00 84.04

5590 1.00 1.00 1.00 2.00 4.00 18.00 31.60 64.28 72.16 7174 1.00 1.00 1.00 2.00 7.00 23.00 43.00 79.00 98.00

5591 1.00 1.00 1.00 2.00 3.00 12.00 27.00 57.24 78.02 7213 1.00 1.00 1.00 2.00 5.00 18.00 34.00 64.00 84.04

5592 1.00 1.00 1.00 2.00 3.00 12.00 28.00 55.58 75.72 7243 1.00 1.00 1.00 1.00 4.00 16.00 29.00 57.00 70.59

5594 1.00 1.00 1.00 1.00 2.00 6.00 23.80 44.96 54.84 7262 -- 1.00 1.00 1.00 1.00 11.50 30.40 73.84 --

5595 -- -- -- -- 1.50 -- -- -- -- 7274 1.00 1.00 1.00 1.00 4.00 11.00 25.00 52.32 69.00

5596 1.00 1.00 1.00 1.00 2.00 13.00 26.40 56.92 74.74 7300 1.00 1.00 1.00 2.00 4.00 15.00 27.00 52.00 69.00

5600 1.00 1.00 1.00 2.00 3.00 12.00 34.20 78.36 95.00 7311 -- -- 1.00 1.00 5.00 14.50 31.80 -- --

5618 -- -- 2.00 2.25 10.00 20.75 48.50 -- -- 7363 -- -- 1.00 3.50 9.00 27.50 83.20 -- --

5650 -- -- 1.00 4.00 8.00 11.50 28.40 -- -- 7422 1.00 1.00 1.00 1.00 5.00 18.00 33.00 65.76 79.76

5656 1.00 1.00 1.00 1.00 3.00 13.00 27.00 51.52 61.00 7431 1.00 1.00 1.00 1.00 3.00 11.00 25.00 50.00 60.00

5658 1.00 1.00 1.00 2.00 5.00 15.00 30.00 60.86 74.31 7481 1.00 1.00 1.00 1.00 3.00 10.00 25.00 50.00 61.70

5661 1.00 1.00 1.00 1.00 2.00 16.25 37.00 82.50 100.75 7497 1.00 1.00 1.00 1.00 4.00 16.25 29.00 62.64 73.41

5666 -- -- 1.00 2.00 4.00 21.25 44.90 -- -- 7498 1.00 1.00 1.00 1.00 3.00 15.00 30.40 51.48 79.96

5695 1.00 1.00 1.00 2.00 5.00 16.50 31.00 59.96 76.22 7499 1.00 1.00 1.00 1.00 4.00 15.00 29.00 55.00 66.19

5742 -- -- 1.00 2.50 13.00 26.00 53.50 -- -- 7531 1.00 1.00 1.00 2.00 6.50 20.00 43.60 68.96 72.66

5766 -- -- 2.00 5.00 17.00 22.00 28.00 -- -- 7534 1.00 1.00 1.00 1.00 4.00 14.00 30.00 63.50 71.50

5770 1.00 1.00 1.00 1.00 4.00 15.00 29.00 54.32 63.16 7556 1.00 1.00 1.00 1.00 4.00 15.00 28.00 52.00 60.00

5775 -- -- 1.00 1.00 3.00 6.00 16.70 -- -- 7594 1.00 1.00 1.00 2.00 5.00 16.00 32.00 59.36 74.00

5779 -- -- 1.00 1.00 6.50 20.00 46.20 -- -- 7596 1.00 1.00 1.00 2.00 4.00 14.75 28.00 62.16 77.14

5840 1.00 1.00 1.00 2.00 5.00 18.00 34.00 60.76 81.60 7608 1.00 1.00 1.00 1.00 5.00 17.00 32.30 64.98 75.33

5890 1.00 1.00 1.00 2.00 4.00 16.00 30.40 58.00 72.14 7622 -- -- 1.00 1.00 2.00 17.00 27.00 -- --

5891 1.00 1.00 1.00 2.00 3.00 12.00 24.60 52.32 68.72 7700 1.00 1.00 1.00 3.00 7.00 22.00 40.00 69.00 79.24

5897 1.00 1.00 1.00 1.00 4.00 17.00 31.00 53.00 69.16 7706 1.00 1.00 1.00 1.00 4.00 16.00 30.00 60.46 74.46

Appendix 4–5.5. Empirical distribution of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
290 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 -- 1.00 1.00 2.00 8.00 24.00 39.00 80.20 -- 8910 -- -- 1.80 3.00 5.00 15.00 36.80 -- --

7745 1.00 1.00 1.00 2.50 10.00 24.50 42.80 75.80 101.70 8911 1.00 1.00 1.00 1.00 4.00 16.00 31.30 60.24 76.18

7922 1.00 1.00 1.00 1.00 2.00 9.00 24.00 49.36 55.80 8924 1.00 1.00 1.00 1.00 3.00 8.00 25.00 43.30 50.60

7936 1.00 1.00 1.00 2.00 6.00 18.00 31.00 70.00 82.00 8929 -- -- 1.00 1.00 6.50 29.75 128.00 -- --

7943 1.00 1.00 1.00 2.00 5.00 16.00 31.00 58.12 71.00 8942 1.00 1.00 1.00 1.00 6.00 17.00 32.00 61.00 76.10

7944 -- 1.00 1.00 2.00 9.00 26.50 50.40 78.04 -- 8944 1.00 1.00 1.00 2.00 6.00 18.00 36.00 66.22 79.22

7945 1.00 1.00 1.00 2.00 7.00 23.00 41.00 80.00 98.00 8996 1.00 1.00 1.00 2.00 5.00 19.00 35.00 70.92 86.00

7947 1.00 1.00 1.00 1.00 6.00 18.00 44.00 62.24 87.96 9014 -- -- 1.80 4.50 10.00 29.00 58.00 -- --

7948 1.00 1.00 1.00 1.00 4.00 16.00 31.90 63.18 73.27 9037 1.00 1.00 1.00 2.00 3.00 11.25 26.00 52.86 76.51

7951 1.00 1.00 1.00 2.00 6.00 18.00 32.00 63.00 82.04 9106 1.00 1.00 1.00 2.00 4.00 16.00 31.00 64.58 118.38

7953 -- 1.00 1.00 2.00 4.00 21.00 47.00 118.54 -- 9107 -- -- 1.00 1.00 1.00 7.00 37.20 -- --

7981 1.00 1.00 1.00 1.00 4.00 16.75 33.40 72.66 83.98 9129 -- 1.00 1.00 1.00 3.00 21.00 47.80 97.40 --

7990 -- 1.00 1.00 2.00 6.00 22.75 42.50 126.90 -- 9163 1.00 1.00 1.00 2.00 5.00 16.00 30.00 58.00 72.00

7992 -- -- 2.60 4.00 9.00 38.00 45.80 -- -- 9213 1.00 1.00 1.00 1.00 7.00 19.00 43.00 97.48 141.54

7997 -- 1.00 1.00 2.00 5.00 17.00 32.70 62.90 -- 9214 -- -- 2.00 3.00 4.50 14.50 83.90 -- --

7999 -- -- 1.00 1.00 4.50 13.50 36.90 -- -- 9222 1.00 1.00 1.00 3.00 10.00 25.00 41.40 73.00 98.70

8022 -- 1.00 1.00 2.00 3.50 23.50 33.50 82.90 -- 9248 1.00 1.00 1.00 1.00 3.00 19.00 32.20 67.52 74.44

8023 1.00 1.00 1.00 1.00 3.00 12.00 27.00 50.00 59.31 9266 -- 1.00 1.00 2.00 6.00 17.00 31.20 59.32 --

8047 1.00 1.00 1.00 1.00 5.00 16.00 30.00 60.20 75.60 9270 1.00 1.00 1.00 1.00 3.00 14.00 27.30 53.00 75.84

8060 1.00 1.00 1.00 2.00 5.00 19.00 38.30 97.60 102.72 9295 -- 1.00 1.00 1.00 3.50 9.25 25.00 57.16 --

8062 -- -- 1.00 2.00 4.00 31.00 38.60 -- -- 9304 -- -- -- -- 12.00 -- -- -- --

8068 -- -- 1.00 1.00 5.50 17.25 28.80 -- -- 9307 1.00 1.00 1.00 2.00 5.00 17.00 33.20 51.52 59.80

8081 1.00 1.00 1.00 1.00 4.00 18.00 32.10 67.00 79.61 9328 1.00 1.00 1.00 1.00 5.00 16.00 33.20 70.20 124.56

8089 -- -- 1.00 2.00 4.00 13.00 32.00 -- -- 9329 -- -- 1.00 2.50 15.00 38.75 75.50 -- --

8221 -- -- 1.00 4.00 7.00 19.00 74.40 -- -- 9345 -- -- -- -- 10.00 -- -- -- --

8252 1.00 1.00 1.00 1.00 3.00 13.00 27.00 53.28 65.56 9363 1.00 1.00 1.00 2.00 6.00 23.00 42.00 80.62 104.86

8265 1.00 1.00 1.00 3.00 7.50 23.00 41.00 72.02 88.00 9364 1.00 1.00 1.00 2.00 5.00 22.00 41.00 75.36 88.68

8289 -- -- 1.00 1.00 4.50 16.50 32.70 -- -- 9365 -- -- 1.40 2.00 5.00 27.00 60.40 -- --

8305 1.00 1.00 1.00 1.00 3.00 10.75 26.00 51.58 62.58 9371 1.00 1.00 1.00 2.00 6.00 22.00 38.80 57.68 69.92

8335 1.00 1.00 1.00 2.00 7.00 18.00 35.00 64.00 77.84 9417 1.00 1.00 1.00 2.00 6.00 18.00 33.00 61.00 77.00

8400 1.00 1.00 1.00 1.00 2.00 16.00 27.00 62.84 75.32 9419 1.00 1.00 1.00 2.00 7.00 21.00 38.00 70.00 84.00

8445 1.00 1.00 1.00 2.00 6.00 19.00 37.00 69.44 77.22 9435 -- 1.00 1.00 1.00 3.00 16.00 31.80 59.04 --

8446 1.00 1.00 1.00 1.00 5.00 17.00 32.00 57.14 67.00 9491 1.00 1.00 1.00 2.00 6.00 19.00 34.00 62.78 75.89

8451 1.00 1.00 1.00 2.00 4.00 16.00 33.70 54.54 62.16 9499 1.00 1.00 1.00 1.00 3.00 12.00 27.00 52.00 66.30

8531 1.00 1.00 1.00 2.00 5.00 18.00 33.70 59.00 80.47 9522 -- -- -- 5.00 15.50 71.75 -- -- --

8541 -- 1.00 1.00 3.00 5.00 17.00 30.80 56.28 -- 9527 1.00 1.00 1.00 1.00 3.00 13.00 27.00 54.00 66.00

8544 1.00 1.00 1.00 2.00 5.00 16.00 33.00 72.00 85.85 9532 1.00 1.00 1.00 1.00 5.00 15.00 29.00 57.00 69.52

8545 -- -- 1.00 1.00 11.00 28.00 52.00 -- -- 9544 -- -- -- 1.00 3.00 17.00 -- -- --

8563 1.00 1.00 1.00 1.00 5.00 15.00 28.00 52.00 61.51 9565 1.00 1.00 1.00 1.00 4.00 13.00 26.90 55.56 71.39

8566 1.00 1.00 1.00 1.00 4.00 13.00 26.00 60.00 71.60 9570 1.00 1.00 1.00 1.00 3.00 14.00 29.00 49.00 63.70

8583 1.00 1.00 1.00 1.00 4.00 16.00 29.00 54.00 62.86 9574 -- -- 1.00 1.00 4.00 14.00 31.00 -- --

8584 1.00 1.00 1.00 1.00 4.00 15.00 31.00 60.96 73.00 9588 1.00 1.00 1.00 1.00 4.00 18.00 35.00 79.00 98.00

8623 1.00 1.00 1.00 1.00 4.00 15.00 30.00 60.00 74.60 9665 1.00 1.00 1.00 2.00 5.00 17.00 32.00 64.00 76.24

8625 1.00 1.00 1.00 2.00 6.00 18.00 33.00 59.00 73.10 9715 1.00 1.00 1.00 2.00 5.00 16.00 30.00 54.00 72.00

8630 1.00 1.00 1.00 1.00 4.00 12.00 26.00 45.24 61.24 9729 1.00 1.00 1.00 2.00 6.00 19.00 33.00 64.90 78.00

8631 1.00 1.00 1.00 2.00 4.00 14.00 31.00 66.18 81.77 9772 1.00 1.00 1.00 2.00 5.00 19.00 32.90 75.16 92.58

8646 1.00 1.00 1.00 2.00 5.00 16.00 30.00 57.00 70.00 9814 -- -- 1.30 2.25 5.50 15.75 25.70 -- --

8647 1.00 1.00 1.00 1.00 4.00 15.00 27.00 56.84 63.63 9815 1.00 1.00 1.00 2.00 6.00 18.00 34.00 82.12 101.24

8677 1.00 1.00 1.00 3.00 7.00 20.00 34.00 72.32 109.04 9816 -- 1.00 1.00 1.00 3.00 13.50 30.80 41.68 --

8696 -- -- 1.00 4.00 8.00 24.00 52.00 -- -- 9817 1.00 1.00 1.00 1.00 4.00 14.00 27.00 53.86 72.79

8743 1.00 1.00 1.00 2.00 6.00 18.00 32.00 63.00 75.65 9829 1.00 1.00 1.00 1.00 3.00 13.00 27.00 53.50 62.00

8761 1.00 1.00 1.00 1.00 3.00 13.00 27.00 51.12 58.00 9830 1.00 1.00 1.00 1.00 4.00 11.00 26.00 46.40 76.24

8778 1.00 1.00 1.00 1.00 5.00 17.00 31.00 62.00 71.77 9858 1.00 1.00 1.00 2.00 4.00 12.00 26.00 51.00 57.00

8845 1.00 1.00 1.00 1.00 5.00 19.00 34.00 73.00 87.00 9893 1.00 1.00 1.00 1.00 4.00 15.00 30.00 61.00 76.00

8859 1.00 1.00 1.00 2.00 6.00 18.00 37.00 69.00 80.62 9916 1.00 1.00 1.00 2.00 6.00 17.00 29.20 54.64 64.82

8898 1.00 1.00 1.00 2.25 6.00 19.00 31.90 64.14 76.57 9976 1.00 1.00 1.00 1.00 4.00 16.00 31.70 59.00 77.28

8908 -- -- 1.00 2.00 7.50 21.25 32.60 -- --

Appendix 4–5.5. Empirical distribution of storm duration defined by 24-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 291

Appendix 4–5.6. Empirical distribution of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- -- 5.00 28.50 78.25 -- -- -- 1154 1.00 1.00 1.00 1.25 25.00 67.00 121.00 232.84 240.46

0016 1.00 1.00 1.00 2.00 10.00 35.00 63.00 126.04 154.52 1165 1.00 1.00 1.00 2.00 7.00 30.00 61.50 122.20 159.10

0050 1.00 1.00 1.00 2.00 10.00 29.00 57.00 118.92 130.84 1185 1.00 1.00 1.00 1.00 3.00 10.00 34.00 63.30 90.30

0054 -- -- 1.00 4.00 12.00 31.00 73.40 -- -- 1186 -- 1.00 1.00 2.00 13.00 43.00 82.40 233.28 --

0120 -- -- 2.40 13.00 20.00 103.00 193.80 -- -- 1188 -- -- -- 4.00 11.50 60.75 -- -- --

0145 1.00 1.00 1.00 1.00 13.00 39.25 72.40 155.68 189.04 1245 -- -- 1.60 5.25 33.50 56.75 235.80 -- --

0146 -- -- 3.40 5.00 8.00 70.00 106.20 -- -- 1246 1.00 1.00 1.00 1.00 11.00 36.00 63.00 121.42 139.26

0174 1.00 1.00 1.00 1.00 6.00 31.00 62.20 142.00 157.60 1267 1.00 1.00 1.00 2.00 7.00 29.00 70.50 106.20 159.60

0178 -- -- 1.00 1.00 22.50 55.50 159.00 -- -- 1304 1.00 1.00 1.00 3.00 9.00 34.75 64.90 109.52 127.57

0179 1.00 1.00 1.00 2.00 5.00 30.75 71.10 177.40 220.51 1325 1.00 1.00 1.00 2.00 9.00 32.00 58.00 115.88 151.20

0202 1.00 1.00 1.00 1.00 5.00 27.00 54.00 118.80 122.00 1429 1.00 1.00 1.00 2.00 7.00 30.50 62.00 122.52 140.00

0206 1.00 1.00 1.00 2.00 7.00 28.00 58.00 105.36 124.68 1431 1.00 1.00 1.00 2.00 9.00 34.00 62.00 131.28 152.07

0208 -- -- -- -- 7.00 -- -- -- -- 1432 1.00 1.00 1.00 2.00 8.00 32.00 60.70 121.82 135.91

0211 1.00 1.00 1.00 2.00 10.00 35.00 68.00 114.40 144.00 1433 1.00 1.00 1.00 3.00 9.00 33.00 59.90 118.00 137.79

0244 -- 1.00 2.00 3.75 12.00 46.50 84.70 180.70 -- 1434 1.00 1.00 1.00 3.00 9.00 32.00 58.00 113.36 140.40

0248 1.00 1.00 1.00 1.00 4.00 22.00 49.00 87.52 107.28 1435 1.00 1.00 1.00 2.00 8.00 28.00 54.30 114.32 134.64

0262 1.00 1.00 1.00 3.00 8.00 29.00 60.00 118.08 150.54 1436 1.00 1.00 1.00 3.00 9.50 34.00 63.00 118.26 143.00

0271 -- -- 2.10 3.75 27.00 88.00 127.60 -- -- 1437 -- -- 1.00 2.00 4.00 16.00 37.00 -- --

0380 1.00 1.00 1.00 2.00 6.00 27.75 62.00 98.98 122.08 1438 1.00 1.00 1.00 2.00 8.00 30.00 56.40 110.28 136.28

0394 -- -- -- 6.75 23.50 68.50 -- -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- 2.00 2.75 11.50 120.50 276.20 -- -- 1492 1.00 1.00 1.00 1.00 5.00 25.00 49.00 101.62 120.86

0427 -- -- 1.00 1.00 24.00 55.50 87.40 -- -- 1500 -- -- 2.00 5.50 14.00 62.50 205.60 -- --

0428 1.00 1.00 1.00 3.00 14.00 44.00 79.00 143.24 175.00 1528 1.00 1.00 1.00 1.00 5.00 27.00 50.00 97.00 114.08

0429 1.00 1.00 1.00 4.00 15.00 48.00 112.00 160.52 169.60 1541 -- -- 1.00 1.25 12.00 32.75 52.90 -- --

0463 -- 1.00 1.00 1.00 3.00 21.75 47.80 153.82 -- 1569 1.00 1.00 1.00 2.00 11.00 42.50 84.00 127.60 150.72

0493 -- -- 1.10 5.00 19.00 57.25 118.00 -- -- 1632 -- -- -- 1.00 1.00 36.00 -- -- --

0495 1.00 1.00 1.00 1.00 5.00 23.00 50.40 100.16 126.56 1641 1.00 1.00 1.00 2.00 6.00 28.00 49.00 96.52 134.40

0496 -- -- 1.00 1.00 1.00 3.25 43.20 -- -- 1646 1.00 1.00 1.00 1.00 4.00 24.00 50.00 97.00 113.96

0498 -- -- -- 1.00 1.00 24.50 -- -- -- 1663 -- -- 1.00 1.00 11.00 45.00 68.60 -- --

0509 1.00 1.00 1.00 2.00 9.00 31.00 62.50 117.30 145.30 1671 1.00 1.00 1.00 2.00 8.00 31.50 61.00 117.00 140.74

0518 1.00 1.00 1.00 2.00 8.00 31.00 63.00 117.60 141.50 1680 1.00 1.00 1.00 2.00 9.00 29.00 56.00 98.00 114.50

0521 -- -- 1.00 3.00 9.00 22.00 55.00 -- -- 1694 1.00 1.00 1.00 1.00 6.00 27.00 48.60 99.34 154.29

0556 -- 1.00 1.00 3.00 8.50 25.00 56.00 114.42 -- 1696 1.00 1.00 1.00 2.00 5.00 25.00 57.00 96.70 112.75

0569 1.00 1.00 1.00 2.00 8.00 36.00 70.00 128.74 158.74 1697 -- 1.00 1.00 2.00 4.00 17.25 35.50 55.00 --

0572 1.00 1.00 1.00 2.00 9.00 34.00 62.00 131.36 157.36 1698 1.00 1.00 1.00 1.00 8.00 29.00 55.60 99.00 116.12

0576 -- 1.00 1.00 2.00 10.00 43.00 87.40 162.28 -- 1720 1.00 1.00 1.00 1.00 3.00 32.00 53.20 119.20 201.58

0580 1.00 1.00 1.00 2.00 8.50 33.50 58.10 92.42 115.52 1761 -- 1.00 1.00 1.00 13.00 58.75 113.90 162.40 --

0587 1.00 1.00 2.00 3.00 11.00 36.00 74.70 141.54 166.86 1773 1.00 1.00 1.00 2.00 9.00 33.00 66.00 124.00 146.21

0605 -- 1.00 1.00 3.00 8.50 27.50 68.10 123.48 -- 1810 -- -- 1.60 4.25 8.00 68.25 160.80 -- --

0639 1.00 1.00 1.00 1.00 6.00 30.00 57.00 120.00 145.54 1823 -- -- 2.00 4.00 11.00 45.00 159.80 -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 1.00 1.00 1.00 3.00 10.50 39.75 72.60 146.42 214.99

0665 1.00 1.00 1.00 2.00 7.00 30.00 60.10 118.62 135.31 1875 -- -- 2.60 6.00 20.00 43.00 93.00 -- --

0689 1.00 1.00 1.00 1.00 6.00 30.50 59.00 120.44 143.30 1876 -- -- 1.00 6.25 17.50 39.00 66.10 -- --

0690 1.00 1.00 1.00 1.00 4.00 24.00 52.00 97.00 138.60 1889 1.00 1.00 1.00 3.00 13.00 53.50 98.80 228.76 268.84

0691 1.00 1.00 1.00 2.00 8.00 31.50 58.00 113.76 142.90 1903 1.00 1.00 1.00 1.00 4.00 26.00 47.80 75.76 117.16

0708 -- 1.00 1.00 1.00 10.00 38.25 81.00 144.42 -- 1914 -- -- 2.30 6.50 35.50 81.75 138.60 -- --

0738 1.00 1.00 1.00 3.00 9.00 31.00 61.00 118.00 142.00 1920 1.00 1.00 1.00 2.00 7.00 26.00 55.00 111.30 132.73

0776 1.00 1.00 1.00 1.00 4.00 23.00 49.00 92.68 107.42 1921 1.00 1.00 1.00 2.00 8.00 30.00 61.00 118.00 141.33

0779 1.00 1.00 1.00 1.00 5.00 24.00 52.40 105.76 108.00 1937 1.00 1.00 1.00 3.00 10.00 31.00 61.20 131.12 153.60

0784 1.00 1.00 1.00 1.00 5.00 26.00 51.70 97.74 110.22 1956 1.00 1.00 1.00 2.00 10.00 36.00 74.00 140.56 168.28

0786 1.00 1.00 1.00 2.00 8.00 29.25 53.00 100.00 115.25 1970 -- -- 2.10 3.00 17.00 106.50 324.60 -- --

0917 1.00 1.00 1.00 3.00 12.00 39.00 74.00 136.24 154.24 2014 1.00 1.00 1.00 2.00 13.00 42.75 72.70 135.40 211.19

0923 -- -- 2.00 2.00 35.50 104.00 340.40 -- -- 2015 1.00 1.00 1.00 2.00 11.00 42.00 78.00 152.00 186.18

0926 1.00 1.00 1.00 2.00 8.00 30.00 60.00 110.50 139.75 2019 -- -- 1.00 1.75 31.50 104.75 169.70 -- --

0950 -- -- 1.80 2.00 7.00 50.00 82.20 -- -- 2024 1.00 1.00 1.00 2.00 8.00 28.00 57.00 111.12 136.06

0996 -- -- -- 5.00 38.00 127.75 -- -- -- 2042 -- -- -- 1.00 4.00 27.00 -- -- --

1013 1.00 1.00 1.00 1.00 4.00 26.00 52.00 111.80 189.70 2043 -- 1.00 1.00 1.00 4.00 23.00 43.70 76.66 --

1017 1.00 1.00 1.00 2.00 7.00 28.00 56.40 103.00 133.54 2048 1.00 1.00 1.00 1.00 6.00 31.00 56.00 111.56 134.00

1042 -- -- -- 14.00 49.00 120.00 -- -- -- 2050 -- 1.00 1.00 1.00 7.00 22.75 53.20 108.28 --

1048 -- -- 2.00 4.00 20.00 54.00 251.00 -- -- 2051 -- 1.00 1.00 1.00 3.00 20.00 50.80 84.80 --

1053 1.00 1.00 1.00 2.00 8.00 31.50 62.00 99.00 112.50 2053 -- -- -- 1.00 29.00 48.00 -- -- --

1057 1.00 1.00 1.00 2.00 8.00 28.00 59.00 108.40 124.40 2073 1.00 1.00 1.00 2.00 8.00 31.00 61.70 116.00 135.54

1063 -- -- 1.00 2.50 31.00 117.50 133.10 -- -- 2082 1.00 1.00 1.00 1.00 4.00 20.00 46.00 87.00 115.90

1068 1.00 1.00 1.00 2.00 8.00 29.00 61.00 115.00 135.00 2086 1.00 1.00 1.00 2.00 7.00 29.00 58.00 115.00 135.44

1080 1.00 1.00 1.00 1.00 6.00 29.00 62.70 140.64 260.32 2088 -- -- 1.00 3.00 13.50 39.75 66.20 -- --

1081 1.00 1.00 1.00 3.00 9.00 31.00 61.00 119.04 137.52 2090 1.00 1.00 1.00 2.00 6.00 28.00 62.00 115.34 132.39

1133 -- -- 1.00 3.00 15.00 39.00 91.40 -- -- 2096 1.00 1.00 1.00 2.00 9.00 31.00 59.00 111.52 130.88

1136 1.00 1.00 1.00 2.00 12.00 44.00 82.00 154.04 191.04 2128 1.00 1.00 1.00 3.00 11.00 33.00 58.60 110.38 125.83

1138 -- -- -- 4.00 16.00 68.50 -- -- -- 2131 1.00 1.00 1.00 2.00 7.00 28.00 53.60 117.60 145.46

1139 -- 1.00 1.60 4.00 17.00 44.00 93.40 162.00 -- 2142 -- -- -- 7.75 67.50 93.50 -- -- --

Appendix 4–5.6. Empirical distribution of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in 

Texas.

[--, not available]
292 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 1.00 1.00 25.00 55.00 110.20 -- -- 3463 -- -- 1.00 2.00 8.00 25.00 65.00 -- --

2206 1.00 1.00 1.00 2.00 8.00 33.50 64.80 147.04 180.82 3476 1.00 1.00 1.00 2.00 7.00 30.75 65.10 126.28 156.42

2238 1.00 1.00 1.00 2.00 9.00 33.50 63.60 117.72 171.76 3485 -- -- 1.50 6.75 11.50 30.75 110.00 -- --

2240 -- 1.00 1.00 1.00 19.00 49.00 91.00 120.04 -- 3507 1.00 1.00 1.00 1.00 8.00 32.00 67.00 117.00 168.00

2242 1.00 1.00 1.00 3.00 11.00 35.00 63.70 133.54 164.27 3546 1.00 1.00 1.00 2.00 10.00 35.00 67.00 124.28 147.92

2244 1.00 1.00 1.00 2.00 10.00 35.00 66.00 127.04 151.52 3547 1.00 1.00 1.00 1.00 7.00 27.50 52.80 98.56 132.94

2247 -- -- 1.20 5.00 12.00 41.00 109.60 -- -- 3579 -- 1.00 2.00 3.00 14.00 47.00 64.80 117.92 --

2309 1.00 1.00 1.00 3.00 10.00 35.00 71.00 119.90 140.00 3642 1.00 1.00 1.00 2.00 9.00 30.00 62.00 113.00 146.96

2312 1.00 1.00 1.00 2.00 11.00 33.00 64.00 116.08 139.08 3646 1.00 1.00 1.00 3.00 9.00 29.00 57.00 113.66 138.49

2334 -- -- 1.00 1.00 14.00 32.25 58.00 -- -- 3668 -- -- -- 10.00 74.50 113.50 -- -- --

2336 1.00 1.00 1.00 2.00 5.50 25.75 53.70 129.62 151.85 3673 -- -- 1.30 4.75 17.00 77.75 347.90 -- --

2354 -- -- 1.00 1.75 3.50 48.00 73.80 -- -- 3686 1.00 1.00 1.00 2.00 9.00 34.00 59.00 117.00 145.80

2355 -- -- 1.00 2.00 15.00 53.50 80.60 -- -- 3691 1.00 1.00 1.00 2.00 7.00 29.00 56.00 122.00 151.12

2357 1.00 1.00 1.00 2.00 8.50 39.00 73.00 118.50 154.20 3734 -- -- 1.10 2.75 23.00 93.00 343.20 -- --

2360 1.00 1.00 1.00 2.00 7.00 31.00 63.00 119.00 135.75 3771 1.00 1.00 1.00 1.00 9.00 34.00 62.00 114.00 126.52

2361 1.00 1.00 1.00 1.00 4.00 23.00 54.10 141.70 210.28 3789 -- 1.00 1.00 1.00 7.00 31.00 76.60 144.52 --

2394 1.00 1.00 1.00 3.00 10.00 33.00 65.00 121.00 148.81 3826 1.00 1.00 1.00 3.00 8.00 27.00 48.00 118.60 166.80

2404 1.00 1.00 1.00 2.00 8.00 30.00 57.00 112.76 149.19 3831 1.00 1.00 1.00 2.00 7.00 32.00 68.00 92.20 103.80

2415 1.00 1.00 1.00 3.00 9.00 32.00 64.00 118.54 142.08 3841 1.00 1.00 1.00 2.00 6.00 28.00 62.00 101.20 119.20

2462 1.00 1.00 1.00 2.00 8.00 30.00 60.80 147.12 183.00 3871 1.00 1.00 1.00 2.00 8.00 30.50 58.00 97.08 144.02

2528 -- 1.00 1.00 2.00 8.00 35.00 63.60 87.24 -- 3884 -- -- 1.40 5.00 11.00 52.00 90.80 -- --

2617 1.00 1.00 1.00 2.75 9.00 34.00 57.20 105.84 122.30 3941 -- -- 1.00 3.00 10.00 41.00 59.80 -- --

2619 1.00 1.00 1.00 1.00 6.00 26.00 53.10 97.72 123.02 3963 -- -- -- 1.00 11.00 35.25 -- -- --

2621 1.00 1.00 1.00 2.00 5.00 25.00 54.00 99.76 117.71 4040 1.00 1.00 1.00 2.00 7.00 27.00 53.20 113.88 141.00

2675 1.00 1.00 1.00 2.00 8.00 28.00 64.20 126.12 151.08 4058 -- -- 1.60 3.25 4.50 27.00 205.80 -- --

2676 1.00 1.00 1.00 1.00 8.50 37.25 66.10 136.08 150.09 4098 1.00 1.00 1.00 1.00 4.00 23.00 49.00 96.96 112.98

2679 1.00 1.00 1.00 1.00 6.00 28.00 55.00 103.16 132.24 4100 1.00 1.00 1.00 2.00 7.00 26.00 55.00 111.08 117.04

2715 1.00 1.00 1.00 2.00 8.00 27.00 56.00 105.00 133.54 4137 1.00 1.00 1.00 2.00 8.00 30.00 56.00 124.60 153.00

2744 1.00 1.00 1.00 2.00 6.00 26.00 52.60 101.00 118.36 4191 1.00 1.00 1.00 2.00 7.00 30.00 57.00 112.00 131.00

2758 -- 1.00 1.00 2.25 12.50 45.00 94.70 125.16 -- 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- 1.00 1.00 6.00 16.00 43.30 -- -- 4257 1.00 1.00 1.00 2.00 9.00 31.00 64.20 120.84 148.84

2797 1.00 1.00 1.00 2.00 6.00 27.00 57.70 113.62 144.39 4258 1.00 1.00 1.00 2.00 12.00 33.00 92.40 187.32 196.70

2811 1.00 1.00 1.00 1.00 5.00 27.00 56.00 107.00 118.08 4278 1.00 1.00 1.00 2.00 7.00 29.00 59.00 117.76 134.00

2813 -- -- 1.00 1.00 5.00 18.00 52.00 -- -- 4299 1.00 1.00 1.00 2.00 4.00 14.75 38.80 75.94 77.98

2814 -- -- 1.00 1.00 11.00 72.00 81.00 -- -- 4300 1.00 1.00 1.00 3.00 15.00 47.00 88.00 179.38 219.76

2815 1.00 1.00 1.00 1.00 5.00 26.00 56.30 90.76 115.57 4305 1.00 1.00 1.00 3.00 15.00 46.00 93.70 173.36 211.68

2818 1.00 1.00 1.00 1.00 5.00 20.00 54.40 98.64 173.44 4307 1.00 1.00 1.00 2.00 15.00 43.00 90.20 216.40 247.76

2986 1.00 1.00 1.00 3.00 10.00 36.00 64.80 149.48 176.96 4309 1.00 1.00 1.00 2.00 10.00 37.00 70.00 131.88 162.00

3005 1.00 1.00 1.00 2.00 7.00 27.00 57.00 111.00 136.84 4311 1.00 1.00 1.00 3.00 9.00 36.00 70.00 132.00 154.52

3033 1.00 1.00 1.00 2.00 4.00 20.00 49.00 93.30 103.50 4313 1.00 1.00 2.00 4.00 18.00 40.00 68.80 115.12 143.76

3034 -- -- -- -- 1.00 -- -- -- -- 4319 -- 1.00 2.00 4.00 12.00 40.00 86.20 144.96 --

3047 -- -- 1.20 2.00 38.00 62.00 279.20 -- -- 4329 1.00 1.00 1.00 2.00 10.00 33.50 67.00 126.44 141.66

3103 -- -- 1.00 1.00 3.00 19.00 47.00 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 1.00 1.00 1.00 2.00 8.00 30.00 58.00 118.00 139.16 4375 1.00 1.00 1.00 1.00 6.00 28.00 56.30 119.88 136.93

3156 1.00 1.00 1.00 2.00 8.00 31.00 65.20 99.52 159.40 4392 1.00 1.00 1.00 3.00 14.00 37.25 81.00 121.00 165.48

3171 1.00 1.00 1.00 2.25 8.00 30.00 57.00 111.22 135.00 4425 1.00 1.00 1.00 1.00 3.00 19.00 46.90 106.00 131.28

3189 1.00 1.00 1.00 1.00 5.00 29.50 59.00 130.20 180.10 4440 1.00 1.00 2.00 3.00 9.00 31.25 60.00 101.00 135.88

3260 1.00 1.00 1.00 2.00 7.00 25.00 54.90 137.40 159.48 4476 1.00 1.00 1.00 2.00 9.00 31.00 57.00 101.00 123.57

3267 -- 1.00 1.00 3.00 11.00 35.50 70.00 125.80 -- 4498 -- -- -- 1.50 4.00 26.00 -- -- --

3270 1.00 1.00 1.00 1.00 5.00 24.00 49.00 101.56 120.90 4517 1.00 1.00 1.00 2.00 8.00 31.00 61.00 119.00 136.50

3272 -- -- 1.00 1.25 13.50 55.50 123.00 -- -- 4520 1.00 1.00 1.00 1.00 8.00 31.00 53.40 112.48 151.48

3277 -- -- 1.00 1.00 7.00 25.00 45.40 -- -- 4525 -- -- 1.00 2.00 10.00 72.75 284.80 -- --

3278 1.00 1.00 1.00 1.00 4.00 23.00 49.90 111.02 178.24 4563 -- -- 1.60 3.00 7.00 40.00 149.20 -- --

3280 1.00 1.00 1.00 1.00 3.00 13.75 53.00 84.50 140.25 4570 1.00 1.00 1.00 1.00 6.00 27.00 54.00 103.62 125.86

3281 -- -- 1.00 1.00 2.00 5.50 42.20 -- -- 4577 1.00 1.00 1.00 2.00 8.00 31.00 68.00 130.00 157.00

3283 1.00 1.00 1.00 3.00 11.00 39.00 78.00 134.00 157.27 4591 1.00 1.00 1.00 3.00 9.00 30.00 71.00 129.00 149.00

3284 1.00 1.00 1.00 2.00 8.00 30.00 62.00 124.76 157.76 4670 1.00 1.00 1.00 2.00 7.00 28.00 58.00 101.00 117.13

3285 1.00 1.00 1.00 1.00 8.00 30.00 57.00 120.74 143.00 4671 -- 1.00 1.00 1.00 10.00 37.00 62.00 132.00 --

3329 1.00 1.00 1.00 2.00 10.00 32.00 64.00 108.96 131.96 4679 1.00 1.00 1.00 2.00 8.00 32.00 62.00 114.04 147.08

3335 1.00 1.00 1.00 3.00 10.00 29.00 55.80 118.88 124.41 4696 -- -- -- 5.00 33.00 51.00 -- -- --

3370 1.00 1.00 1.00 2.00 7.00 27.75 54.00 121.14 154.00 4703 -- 1.00 1.00 1.00 9.00 37.00 70.00 146.00 --

3410 1.00 1.00 1.00 1.00 6.00 27.00 55.00 100.50 119.25 4704 1.00 1.00 1.00 3.00 14.00 37.00 64.40 139.56 156.70

3415 1.00 1.00 1.00 2.00 8.00 29.25 61.00 117.00 143.23 4731 -- 1.00 1.00 1.00 16.00 34.00 76.30 169.38 --

3430 1.00 1.00 1.00 3.00 12.00 42.00 77.00 143.92 170.46 4792 1.00 1.00 1.00 1.00 6.00 29.00 60.00 120.00 152.00

3431 1.00 1.00 1.00 1.00 19.00 55.00 97.00 239.40 276.05 4819 1.00 1.00 1.00 2.00 10.00 37.50 75.50 123.00 163.80

3441 -- -- 1.00 1.00 10.00 39.50 99.80 -- -- 4852 -- -- 1.00 1.00 1.00 21.00 107.00 -- --

3442 1.00 1.00 1.00 3.00 8.00 28.00 54.00 90.20 107.93 4866 1.00 1.00 1.00 2.00 8.00 32.00 58.00 119.00 133.10

3446 1.00 1.00 1.00 2.00 5.00 22.25 49.00 89.88 94.97 4876 -- 1.00 1.00 2.00 9.00 30.00 56.00 126.20 --

3460 -- -- 1.00 2.00 11.00 26.00 67.00 -- -- 4878 1.00 1.00 1.00 3.00 12.00 42.00 79.00 142.64 155.82

3462 1.00 1.00 1.00 2.00 7.00 24.50 63.20 160.92 169.86 4880 1.00 1.00 1.00 2.00 6.00 27.00 55.00 106.56 139.00

Appendix 4–5.6. Empirical distribution of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 293

4920 1.00 1.00 1.00 1.00 6.00 26.00 53.90 101.38 120.69 5957 1.00 1.00 1.00 2.00 6.00 28.00 57.70 104.00 128.85

4934 -- -- -- 1.00 2.00 39.00 -- -- -- 5958 1.00 1.00 1.00 2.00 9.50 29.75 62.00 123.38 135.52

4972 1.00 1.00 1.00 2.00 8.00 30.00 55.00 103.00 124.00 5973 -- 1.00 1.00 2.75 13.00 37.25 81.10 131.54 --

4973 1.00 1.00 1.00 3.00 9.00 27.25 59.00 122.30 175.00 5996 1.00 1.00 1.00 2.00 8.00 31.00 63.00 116.00 130.48

4974 1.00 1.00 1.00 2.00 6.00 29.00 57.00 101.74 121.48 6017 -- 1.00 1.00 2.00 8.50 35.75 86.00 130.00 --

4975 1.00 1.00 1.00 2.00 9.00 32.00 57.00 120.00 147.10 6024 1.00 1.00 1.00 4.00 13.00 28.00 63.00 108.52 127.56

4978 1.00 1.00 1.00 1.00 6.50 23.00 61.50 104.70 154.50 6050 -- -- 1.00 5.50 11.00 16.50 44.20 -- --

4979 -- -- -- 8.00 70.00 127.75 -- -- -- 6104 1.00 1.00 1.00 2.00 7.00 33.00 77.00 145.00 189.80

4982 1.00 1.00 1.00 2.00 7.00 25.00 53.70 100.54 119.27 6108 1.00 1.00 1.00 2.00 9.00 32.00 62.30 119.00 138.00

5018 1.00 1.00 1.00 3.00 7.00 25.00 55.00 124.70 179.65 6136 1.00 1.00 1.00 1.00 5.00 25.00 51.00 103.00 127.00

5048 1.00 1.00 1.00 1.00 4.00 23.00 45.90 83.18 98.81 6166 -- 1.00 1.40 3.00 10.00 32.00 59.20 98.72 --

5049 -- 1.00 1.00 1.00 4.50 21.50 44.10 97.16 -- 6176 1.00 1.00 1.00 2.50 12.00 32.00 71.00 125.08 147.36

5056 -- -- -- 5.00 12.50 19.25 -- -- -- 6177 1.00 1.00 1.00 2.00 9.00 32.00 64.00 117.82 143.82

5057 1.00 1.00 1.00 2.00 8.00 35.00 69.00 138.72 160.90 6210 1.00 1.00 1.00 2.00 8.00 32.00 61.00 116.00 138.15

5060 1.00 1.00 1.00 2.00 7.00 32.50 70.50 124.80 143.00 6211 1.00 1.00 1.00 3.00 13.00 45.00 73.00 146.12 194.92

5081 1.00 1.00 1.00 4.00 11.00 37.00 72.00 131.90 146.05 6270 1.00 1.00 1.00 2.00 10.00 34.25 65.00 113.68 145.17

5094 1.00 1.00 1.00 2.00 8.00 29.00 59.00 118.00 142.55 6275 -- -- -- -- .00 -- -- -- --

5113 1.00 1.00 1.00 2.00 8.00 32.00 63.90 115.18 135.18 6276 -- -- 1.00 3.25 12.50 81.75 379.80 -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 1.00 1.00 1.00 3.00 9.00 29.00 61.00 116.60 135.80

5123 -- -- 1.00 2.25 10.00 27.25 31.70 -- -- 6434 -- -- 2.20 5.00 8.00 33.00 50.60 -- --

5192 1.00 1.00 1.00 2.00 8.00 30.00 57.30 111.00 125.46 6504 1.00 1.00 1.00 1.00 5.00 25.00 56.00 105.34 127.35

5193 1.00 1.00 1.00 2.00 9.00 33.00 68.00 125.36 146.36 6558 -- -- 1.00 1.00 7.00 28.25 42.10 -- --

5224 1.00 1.00 1.00 3.00 13.00 43.00 74.80 136.00 169.48 6615 1.00 1.00 1.00 1.00 4.00 25.50 50.60 104.84 151.64

5228 1.00 1.00 1.00 1.00 6.00 32.50 61.00 144.40 154.10 6660 -- 1.00 1.00 3.00 10.00 41.75 63.20 100.28 --

5235 -- -- 1.00 2.00 13.00 46.00 75.90 -- -- 6663 -- 1.00 1.00 2.00 15.00 50.00 118.60 218.92 --

5247 1.00 1.00 1.00 2.00 7.00 27.00 56.60 108.00 128.16 6734 1.00 1.00 1.00 2.00 9.00 31.50 63.40 104.80 126.90

5258 1.00 1.00 1.00 3.00 8.00 29.00 62.00 110.00 132.69 6736 1.00 1.00 1.00 1.00 4.00 22.00 48.40 97.76 121.88

5303 1.00 1.00 1.00 2.00 7.00 30.00 58.20 99.48 115.64 6740 -- -- 1.20 5.00 8.00 35.00 118.00 -- --

5312 1.00 1.00 1.00 1.00 6.00 30.00 57.10 108.00 125.00 6750 1.00 1.00 1.00 1.00 12.00 43.00 88.60 208.84 231.96

5341 -- -- 1.10 2.75 5.50 80.00 401.60 -- -- 6757 1.00 1.00 1.00 2.00 10.00 35.00 70.00 128.90 152.45

5342 -- -- -- -- .00 -- -- -- -- 6775 1.00 1.00 1.00 2.00 10.00 32.00 63.80 104.60 114.16

5348 1.00 1.00 1.00 2.00 10.00 34.25 61.00 111.66 144.33 6776 1.00 1.00 1.00 1.00 6.00 29.00 57.00 107.76 148.19

5358 1.00 1.00 1.00 2.00 6.00 28.00 53.00 98.86 118.00 6788 1.00 1.00 1.20 3.00 8.00 26.00 50.80 103.64 122.40

5398 1.00 1.00 1.00 3.00 10.00 34.00 70.00 126.00 147.00 6792 1.00 1.00 1.00 1.00 4.00 24.00 50.00 101.00 130.35

5410 1.00 1.00 1.00 1.00 4.00 26.00 52.00 96.48 138.74 6794 -- -- -- 9.00 21.00 112.50 -- -- --

5411 1.00 1.00 1.00 2.00 9.00 34.00 66.90 126.96 155.43 6834 1.00 1.00 1.00 2.00 8.00 30.00 59.00 115.00 139.00

5424 1.00 1.00 1.00 4.00 19.00 64.75 116.00 201.68 262.28 6893 1.00 1.00 1.00 1.00 3.00 18.00 44.00 92.00 104.92

5429 1.00 1.00 1.00 2.00 8.00 33.50 66.00 132.88 145.88 6935 1.00 1.00 1.00 1.00 5.00 26.00 52.00 98.74 123.96

5431 -- -- 1.30 5.25 13.50 26.75 97.10 -- -- 6981 1.00 1.00 1.00 2.00 9.50 30.75 51.10 119.16 149.07

5461 1.00 1.00 1.00 2.00 8.00 31.00 62.00 117.00 141.00 7020 -- 1.00 1.00 3.25 14.50 34.50 73.10 117.52 --

5463 1.00 1.00 1.00 1.00 8.00 32.00 58.70 105.48 119.74 7060 1.00 1.00 1.00 1.00 5.00 24.00 50.10 109.44 128.33

5471 -- -- 1.00 1.00 2.00 52.50 86.80 -- -- 7066 1.00 1.00 1.00 3.00 9.00 33.00 63.80 120.16 146.08

5477 -- -- 1.00 1.00 3.00 24.50 245.80 -- -- 7074 1.00 1.00 1.00 1.00 4.00 23.50 52.00 101.04 125.00

5528 1.00 1.00 1.00 2.00 7.00 28.00 53.00 109.98 132.98 7097 -- 1.00 1.00 2.00 10.00 47.00 92.30 253.12 --

5579 -- -- -- -- 15.00 -- -- -- -- 7116 1.00 1.00 1.00 2.00 7.00 28.00 53.00 111.60 142.50

5580 -- -- 1.60 3.00 19.00 52.00 76.40 -- -- 7140 1.00 1.00 1.00 2.00 9.00 35.00 70.00 130.60 156.16

5589 1.00 1.00 1.00 1.00 6.00 31.00 53.60 116.76 233.16 7173 1.00 1.00 1.00 3.00 16.00 47.00 81.80 162.52 218.76

5590 1.00 1.00 1.00 2.00 14.50 42.50 64.50 151.30 169.37 7174 1.00 1.00 1.00 3.00 15.00 46.00 86.00 174.00 209.46

5591 1.00 1.00 1.00 2.00 4.00 21.00 54.00 116.72 145.68 7213 1.00 1.00 1.00 2.00 8.00 32.00 60.40 118.28 139.84

5592 1.00 1.00 1.00 2.00 4.00 25.00 49.00 109.26 155.52 7243 1.00 1.00 1.00 2.00 8.00 31.00 59.10 113.02 134.01

5594 1.00 1.00 1.00 2.00 3.00 13.50 44.00 92.80 158.60 7262 -- 1.00 1.00 1.00 1.00 26.50 49.00 176.80 --

5595 -- -- -- -- 1.50 -- -- -- -- 7274 1.00 1.00 1.00 1.00 5.00 18.75 37.10 91.06 109.12

5596 1.00 1.00 1.00 1.00 5.00 28.00 57.00 113.00 140.72 7300 1.00 1.00 1.00 2.00 7.00 25.00 50.00 100.00 118.00

5600 1.00 1.00 1.00 2.00 4.00 28.75 52.00 145.06 165.24 7311 -- -- 1.00 1.00 5.00 24.00 40.00 -- --

5618 -- -- 2.40 10.00 35.00 79.00 247.40 -- -- 7363 -- -- 1.20 3.00 9.00 62.00 284.80 -- --

5650 -- -- 1.60 6.50 13.50 45.75 84.60 -- -- 7422 1.00 1.00 1.00 2.00 8.00 32.00 60.00 118.18 139.59

5656 1.00 1.00 1.00 1.00 6.00 28.00 52.00 96.60 121.10 7431 1.00 1.00 1.00 1.00 4.00 20.00 48.00 93.64 120.30

5658 1.00 1.00 1.00 2.00 7.00 28.00 57.00 104.00 118.53 7481 1.00 1.00 1.00 1.00 4.00 20.00 48.00 86.00 100.96

5661 1.00 1.00 1.00 1.00 9.00 38.00 69.60 131.52 181.51 7497 1.00 1.00 1.00 1.00 10.00 32.50 65.80 126.12 142.56

5666 -- -- 1.00 2.00 14.50 48.25 58.60 -- -- 7498 1.00 1.00 1.00 1.00 7.00 30.50 56.20 137.16 157.82

5695 1.00 1.00 1.00 2.00 8.00 29.00 59.00 108.00 125.87 7499 1.00 1.00 1.00 1.00 7.00 30.00 57.00 109.54 142.54

5742 -- -- 1.00 2.00 9.00 23.00 101.80 -- -- 7531 -- 1.00 1.00 2.25 10.00 44.50 70.00 107.84 --

5766 -- -- -- 30.50 57.00 120.50 -- -- -- 7534 1.00 1.00 1.00 2.00 8.00 31.50 56.60 95.32 108.22

5770 1.00 1.00 1.00 2.00 8.00 31.00 60.00 114.00 141.31 7556 1.00 1.00 1.00 2.00 7.00 28.00 56.00 112.80 129.70

5775 -- -- -- 1.00 23.00 46.25 -- -- -- 7594 1.00 1.00 1.00 2.00 8.00 32.00 66.00 121.20 145.10

5779 -- -- 1.00 1.00 6.50 20.00 46.20 -- -- 7596 1.00 1.00 1.00 2.00 6.50 28.00 61.70 91.58 110.16

5840 1.00 1.00 1.00 2.00 7.00 25.00 63.00 114.36 134.56 7608 1.00 1.00 1.00 2.00 9.00 36.00 65.40 118.08 151.08

5890 1.00 1.00 1.00 2.00 7.00 28.00 56.00 108.68 138.68 7622 -- -- 1.00 1.00 2.00 23.50 48.20 -- --

5891 1.00 1.00 1.00 2.00 5.00 24.50 46.50 76.00 104.00 7700 1.00 1.00 1.00 3.00 13.00 42.00 76.00 135.76 150.76

5897 1.00 1.00 1.00 1.00 10.00 32.00 58.20 113.28 129.00 7706 1.00 1.00 1.00 1.00 6.00 27.00 56.00 106.40 129.90

Appendix 4–5.6. Empirical distribution of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
294 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 -- 1.00 1.00 2.00 9.00 29.00 52.20 175.00 -- 8910 -- -- 1.40 4.50 10.00 45.50 91.20 -- --

7745 1.00 1.00 1.00 3.00 13.00 40.50 72.00 116.80 134.70 8911 1.00 1.00 1.00 2.00 7.00 32.00 66.00 147.54 162.18

7922 1.00 1.00 1.00 1.00 4.00 20.00 43.00 97.12 116.60 8924 1.00 1.00 1.00 2.00 3.00 23.00 44.00 98.60 162.80

7936 1.00 1.00 1.00 3.00 10.00 36.00 72.00 141.08 163.56 8929 -- -- 1.00 1.00 5.00 36.00 278.40 -- --

7943 1.00 1.00 1.00 2.00 7.00 30.00 60.00 114.92 142.96 8942 1.00 1.00 1.00 2.00 10.00 35.00 68.00 126.00 154.21

7944 -- -- 1.00 4.00 20.00 50.00 90.40 -- -- 8944 1.00 1.00 1.00 2.00 9.00 39.00 74.00 123.96 142.68

7945 1.00 1.00 1.00 2.00 14.00 42.00 77.00 148.78 181.39 8996 1.00 1.00 1.00 3.00 10.00 38.00 73.90 133.00 155.00

7947 1.00 1.00 1.00 2.00 9.00 44.00 66.70 140.40 253.00 9014 -- -- 2.40 8.25 34.00 101.50 202.00 -- --

7948 1.00 1.00 1.00 2.00 6.00 29.00 58.00 119.24 144.00 9037 1.00 1.00 1.00 2.00 4.00 19.00 47.10 90.76 105.83

7951 1.00 1.00 1.00 3.00 9.00 29.00 64.00 126.34 151.05 9106 1.00 1.00 1.00 2.00 4.00 25.00 47.20 115.44 201.04

7953 -- 1.00 1.20 2.00 7.00 43.50 70.00 144.28 -- 9107 -- -- 1.00 1.00 2.00 9.00 74.20 -- --

7981 1.00 1.00 1.00 2.00 7.00 29.25 62.60 127.86 181.01 9129 -- 1.00 1.00 2.00 6.00 41.00 86.00 133.00 --

7990 -- 1.00 1.00 2.00 7.00 40.75 94.50 222.30 -- 9163 1.00 1.00 1.00 2.00 7.00 28.00 55.40 104.48 130.22

7992 -- -- 1.60 4.00 14.50 60.50 163.60 -- -- 9213 1.00 1.00 1.00 1.00 13.00 49.00 89.20 155.00 176.00

7997 -- 1.00 1.00 2.00 7.00 29.50 49.00 81.84 -- 9214 -- -- 3.00 3.00 25.00 100.50 228.70 -- --

7999 -- -- 1.00 2.50 7.00 37.50 54.20 -- -- 9222 1.00 1.00 1.00 4.00 16.00 33.00 56.00 187.00 224.20

8022 -- -- 1.00 2.00 4.00 29.00 43.00 -- -- 9248 -- 1.00 1.00 2.00 10.50 29.75 62.60 114.20 --

8023 1.00 1.00 1.00 1.00 4.00 23.00 49.70 97.08 126.81 9266 -- 1.00 1.00 2.00 8.00 28.00 64.00 142.16 --

8047 1.00 1.00 1.00 2.00 7.50 29.00 59.00 107.66 138.00 9270 1.00 1.00 1.00 1.00 5.00 28.00 66.00 139.40 165.30

8060 -- 1.00 1.00 2.00 6.00 42.00 85.20 205.68 -- 9295 -- 1.00 1.00 1.00 7.00 13.00 37.00 191.68 --

8062 -- -- 1.00 2.00 14.50 34.50 47.70 -- -- 9304 -- -- -- -- 12.00 -- -- -- --

8068 -- -- 1.00 2.50 18.50 44.75 68.30 -- -- 9307 1.00 1.00 1.00 2.00 6.00 25.75 49.70 100.68 172.91

8081 1.00 1.00 1.00 2.00 7.00 29.00 58.00 120.42 147.05 9328 1.00 1.00 1.00 2.00 6.00 33.00 68.00 120.48 125.37

8089 -- -- 1.00 2.00 6.00 31.00 58.40 -- -- 9329 -- -- -- 3.50 17.00 59.50 -- -- --

8221 -- -- 7.30 10.00 29.50 107.25 148.80 -- -- 9345 -- -- -- -- 10.00 -- -- -- --

8252 1.00 1.00 1.00 1.00 4.00 24.00 50.40 96.48 118.22 9363 1.00 1.00 1.00 2.00 15.00 46.00 79.40 155.24 173.64

8265 1.00 1.00 2.00 3.00 13.00 43.00 77.00 139.00 160.80 9364 1.00 1.00 1.00 2.00 13.00 43.00 79.00 157.08 186.00

8289 -- -- 1.00 3.00 18.00 33.50 61.00 -- -- 9365 -- -- 1.20 2.00 5.00 42.00 67.20 -- --

8305 1.00 1.00 1.00 1.00 4.00 23.00 53.00 103.00 123.00 9371 -- 1.00 1.00 2.00 13.00 41.50 68.20 111.24 --

8335 1.00 1.00 1.00 3.00 11.00 34.00 69.00 127.00 151.00 9417 1.00 1.00 1.00 2.00 9.00 33.00 62.30 119.46 148.92

8400 1.00 1.00 1.00 1.00 6.00 31.50 71.00 112.32 139.22 9419 1.00 1.00 1.00 3.00 12.00 38.00 72.90 136.58 152.29

8445 1.00 1.00 1.00 3.00 10.00 37.00 68.00 126.00 152.25 9435 -- 1.00 1.00 1.00 4.00 24.50 63.20 108.40 --

8446 1.00 1.00 1.00 2.00 8.00 32.00 63.00 113.66 146.32 9491 1.00 1.00 1.00 2.00 10.00 35.00 68.00 130.00 149.00

8451 1.00 1.00 1.00 2.00 5.50 28.25 55.00 97.76 133.08 9499 1.00 1.00 1.00 1.00 5.00 26.00 51.00 101.00 121.14

8531 1.00 1.00 1.00 2.00 8.00 32.00 60.70 123.08 140.77 9522 -- -- -- 3.50 8.00 188.00 -- -- --

8541 -- 1.00 2.00 3.00 6.00 23.50 59.20 127.96 -- 9527 1.00 1.00 1.00 1.00 5.00 28.00 60.00 107.28 142.00

8544 1.00 1.00 1.00 3.00 10.00 35.00 66.80 110.80 129.76 9532 1.00 1.00 1.00 2.00 8.00 29.00 56.00 104.00 139.68

8545 -- -- 1.00 2.50 12.00 34.00 101.20 -- -- 9544 -- -- -- 1.00 3.00 17.00 -- -- --

8563 1.00 1.00 1.00 2.00 9.00 30.00 57.40 116.08 146.94 9565 1.00 1.00 1.00 2.00 6.00 25.00 57.00 113.06 130.53

8566 1.00 1.00 1.00 1.00 5.00 26.00 61.20 116.24 136.08 9570 1.00 1.00 1.00 1.00 4.00 29.00 56.40 104.36 139.92

8583 1.00 1.00 1.00 1.00 9.00 30.00 57.30 115.98 154.65 9574 -- -- 1.00 1.00 16.00 39.00 53.20 -- --

8584 1.00 1.00 1.00 1.00 6.00 30.00 56.20 101.00 111.00 9588 1.00 1.00 1.00 1.00 6.00 30.00 63.00 136.00 160.88

8623 1.00 1.00 1.00 2.00 7.00 29.50 57.00 116.80 138.90 9665 1.00 1.00 1.00 2.00 8.00 33.00 67.00 125.00 148.36

8625 1.00 1.00 1.00 3.00 10.00 31.00 60.00 115.04 140.04 9715 1.00 1.00 1.00 2.00 8.00 31.00 57.00 115.48 140.62

8630 1.00 1.00 1.00 2.00 5.00 22.00 48.00 89.28 110.35 9729 1.00 1.00 1.00 3.00 10.00 33.00 63.00 118.00 144.00

8631 1.00 1.00 1.00 2.00 6.00 25.00 51.00 100.00 120.65 9772 1.00 1.00 1.00 2.00 9.00 30.50 62.40 146.08 169.68

8646 1.00 1.00 1.00 2.00 7.00 28.00 58.20 119.44 137.44 9814 -- -- 1.00 2.50 9.00 19.00 49.00 -- --

8647 1.00 1.00 1.00 1.00 6.00 25.00 56.00 121.24 150.09 9815 1.00 1.00 1.00 3.00 9.00 33.00 71.00 127.04 147.17

8677 1.00 1.00 1.40 3.50 8.00 33.00 69.40 142.16 161.18 9816 -- 1.00 1.00 1.00 3.50 15.00 43.40 152.22 --

8696 -- -- 2.20 7.00 32.50 109.75 201.10 -- -- 9817 1.00 1.00 1.00 1.00 6.00 25.00 54.00 106.10 125.85

8743 1.00 1.00 1.00 3.00 9.00 34.00 65.00 119.32 143.16 9829 1.00 1.00 1.00 1.00 4.00 23.00 50.00 91.00 114.00

8761 1.00 1.00 1.00 1.00 4.00 23.00 48.00 101.00 134.85 9830 1.00 1.00 1.00 1.00 4.00 21.00 43.00 98.60 186.20

8778 1.00 1.00 1.00 2.00 10.00 35.00 68.00 123.00 147.21 9858 1.00 1.00 1.00 2.00 6.00 22.00 54.00 95.68 109.00

8845 1.00 1.00 1.00 2.00 9.00 33.00 64.00 112.72 140.86 9893 1.00 1.00 1.00 2.00 7.00 28.00 56.00 101.98 112.98

8859 1.00 1.00 1.00 2.00 8.00 33.00 63.40 126.56 158.12 9916 1.00 1.00 1.00 3.00 11.00 34.00 62.60 118.92 154.86

8898 1.00 1.00 1.00 3.00 9.00 29.75 60.10 120.22 151.33 9976 1.00 1.00 1.00 2.00 6.00 30.00 57.00 100.00 124.60

8908 -- -- 1.00 2.25 9.50 23.50 107.50 -- --

Appendix 4–5.6. Empirical distribution of storm duration defined by 48-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 295

Appendix 4–5.7. Empirical distribution of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

0015 -- -- -- -- 5.00 -- -- -- -- 1154 -- 1.00 1.00 7.00 31.00 91.50 163.00 333.40 --

0016 1.00 1.00 1.00 3.00 16.00 55.00 103.00 194.60 238.00 1165 1.00 1.00 1.00 2.00 11.00 49.00 95.00 171.40 184.00

0050 1.00 1.00 1.00 3.00 13.00 45.00 97.50 182.30 216.65 1185 1.00 1.00 1.00 1.00 3.00 19.00 55.90 103.52 146.54

0054 -- -- 1.00 5.00 31.00 98.50 250.60 -- -- 1186 -- 1.00 1.00 2.00 14.00 67.00 142.40 427.46 --

0120 -- -- -- 13.75 35.00 116.50 -- -- -- 1188 -- -- -- 11.50 42.00 92.50 -- -- --

0145 -- 1.00 1.00 1.00 25.00 55.00 125.20 270.54 -- 1245 -- -- -- 10.50 61.00 118.50 -- -- --

0146 -- -- 2.20 5.00 7.00 81.00 151.40 -- -- 1246 1.00 1.00 1.00 2.00 20.00 55.00 109.00 187.08 213.93

0174 1.00 1.00 1.00 1.00 11.50 51.50 101.00 226.96 254.35 1267 1.00 1.00 1.00 2.00 12.00 47.00 106.00 183.12 235.56

0178 -- -- -- 6.25 82.00 199.75 -- -- -- 1304 1.00 1.00 1.00 3.00 12.00 54.00 94.00 186.36 234.84

0179 1.00 1.00 1.00 2.00 9.00 55.00 102.90 202.90 321.90 1325 1.00 1.00 1.00 3.00 18.00 57.00 107.60 177.92 208.92

0202 1.00 1.00 1.00 1.00 12.00 51.75 117.10 185.64 239.44 1429 1.00 1.00 1.00 2.00 11.00 48.00 98.00 191.36 232.20

0206 1.00 1.00 1.00 2.00 10.50 50.00 91.00 181.38 238.19 1431 1.00 1.00 1.00 3.00 13.00 50.75 103.90 206.68 248.39

0208 -- -- -- -- 47.50 -- -- -- -- 1432 1.00 1.00 1.00 2.00 13.00 50.00 100.50 207.00 247.00

0211 1.00 1.00 1.00 3.00 16.00 60.00 110.00 197.32 255.03 1433 1.00 1.00 1.00 3.00 13.00 49.00 96.20 190.08 234.20

0244 -- -- 2.00 7.50 29.00 91.50 122.90 -- -- 1434 1.00 1.00 1.00 3.00 12.00 48.00 97.00 192.40 208.00

0248 1.00 1.00 1.00 1.00 6.00 36.00 75.00 147.76 178.90 1435 1.00 1.00 1.00 2.00 11.00 43.00 93.70 199.34 222.57

0262 1.00 1.00 1.00 3.00 14.00 56.00 100.00 206.48 250.37 1436 1.00 1.00 1.00 3.00 15.00 51.00 99.00 193.00 224.50

0271 -- -- -- 4.75 58.50 102.00 -- -- -- 1437 -- -- 1.00 2.00 8.00 33.00 93.00 -- --

0380 1.00 1.00 1.00 2.00 7.00 34.00 73.20 172.10 218.62 1438 1.00 1.00 1.00 3.00 14.00 48.00 90.00 193.00 232.80

0394 -- -- -- 5.50 20.00 121.00 -- -- -- 1462 -- -- -- -- .00 -- -- -- --

0408 -- -- -- 10.00 45.50 170.00 -- -- -- 1492 1.00 1.00 1.00 1.00 9.00 42.50 82.00 170.00 190.90

0427 -- -- 1.00 1.00 30.00 58.00 149.20 -- -- 1500 -- -- -- 22.00 69.00 103.00 -- -- --

0428 1.00 1.00 1.00 4.00 25.00 72.00 141.00 242.00 279.17 1528 1.00 1.00 1.00 2.00 7.50 43.00 86.30 154.78 193.78

0429 -- 1.00 1.00 4.00 22.50 73.75 130.70 397.56 -- 1541 -- -- 1.00 2.50 27.00 72.50 116.40 -- --

0463 -- 1.00 1.00 1.00 4.00 30.75 76.60 235.78 -- 1569 1.00 1.00 1.00 3.00 19.00 71.00 114.20 221.60 225.84

0493 -- -- -- 8.50 19.00 94.50 -- -- -- 1632 -- -- -- 1.00 1.00 36.00 -- -- --

0495 1.00 1.00 1.00 2.00 7.00 41.25 75.70 138.42 209.71 1641 1.00 1.00 1.00 2.00 10.00 34.50 68.60 171.12 335.16

0496 -- -- 1.00 1.00 1.00 3.25 43.20 -- -- 1646 1.00 1.00 1.00 1.00 8.00 46.00 94.00 164.38 184.38

0498 -- -- -- 1.00 1.00 27.25 -- -- -- 1663 -- -- 1.00 1.25 19.00 61.25 101.50 -- --

0509 1.00 1.00 1.00 2.00 13.00 51.25 101.00 175.78 209.89 1671 1.00 1.00 1.00 2.00 14.00 53.00 102.00 199.00 241.00

0518 1.00 1.00 1.00 2.00 13.00 54.00 103.10 202.10 268.53 1680 1.00 1.00 1.00 3.00 12.00 48.00 95.00 171.78 206.26

0521 -- -- 1.00 2.00 5.00 73.50 99.80 -- -- 1694 -- 1.00 1.00 1.00 7.00 34.25 85.70 227.12 --

0556 -- 1.00 1.00 2.00 10.00 37.00 92.00 175.08 -- 1696 1.00 1.00 1.00 2.00 8.00 48.00 89.00 149.00 193.00

0569 1.00 1.00 1.00 2.00 16.50 63.00 121.10 213.84 262.39 1697 -- 1.00 1.00 2.00 5.00 32.00 72.80 167.00 --

0572 1.00 1.00 1.00 3.00 13.00 58.00 120.00 197.60 289.20 1698 1.00 1.00 1.00 2.00 12.00 44.00 93.00 187.16 209.58

0576 -- 1.00 1.00 2.00 17.00 55.00 98.80 229.16 -- 1720 1.00 1.00 1.00 1.00 11.00 50.50 108.20 280.62 353.22

0580 1.00 1.00 1.00 2.00 11.00 49.50 76.20 156.68 190.70 1761 -- -- 1.00 1.00 32.00 103.00 149.80 -- --

0587 1.00 1.00 2.00 5.00 20.00 76.00 129.20 269.12 323.56 1773 1.00 1.00 1.00 3.00 14.00 58.00 109.00 201.64 254.76

0605 -- 1.00 1.00 3.00 14.00 65.50 116.00 192.80 -- 1810 -- -- -- 6.00 20.00 150.00 -- -- --

0639 1.00 1.00 1.00 2.00 14.00 55.00 99.00 193.58 227.00 1823 -- -- -- 8.00 37.00 91.75 -- -- --

0655 -- -- -- -- .00 -- -- -- -- 1870 1.00 1.00 2.00 5.00 19.00 72.00 131.20 224.52 310.36

0665 1.00 1.00 1.00 2.00 11.00 52.25 104.00 194.60 249.42 1875 -- -- 2.40 7.50 20.00 64.75 102.70 -- --

0689 1.00 1.00 1.00 2.00 10.00 51.00 94.40 167.62 193.54 1876 -- -- 1.00 6.25 17.50 39.00 66.10 -- --

0690 1.00 1.00 1.00 1.00 8.00 39.50 91.40 188.20 212.02 1889 1.00 1.00 1.00 4.50 21.00 73.50 166.00 301.80 396.90

0691 1.00 1.00 1.00 3.00 12.00 51.00 96.00 180.86 219.00 1903 1.00 1.00 1.00 1.00 8.00 36.00 64.00 137.96 254.28

0708 -- 1.00 1.00 2.00 26.50 79.25 109.40 239.12 -- 1914 -- -- -- 17.00 90.00 131.00 -- -- --

0738 1.00 1.00 1.00 3.00 12.00 50.00 97.00 179.88 215.80 1920 1.00 1.00 1.00 3.00 11.00 44.00 84.00 157.60 181.80

0776 1.00 1.00 1.00 2.00 7.00 38.00 75.70 163.44 191.00 1921 1.00 1.00 1.00 3.00 15.00 57.00 102.00 200.50 251.50

0779 1.00 1.00 1.00 1.00 6.00 29.75 68.90 154.04 177.89 1937 1.00 1.00 2.00 4.00 16.00 56.75 111.00 216.40 253.95

0784 1.00 1.00 1.00 1.00 7.00 41.00 81.40 164.88 217.88 1956 1.00 1.00 1.00 3.00 19.00 68.00 126.80 229.32 267.16

0786 1.00 1.00 1.00 2.00 10.00 40.00 86.80 174.12 188.74 1970 -- -- -- 3.00 104.00 128.00 -- -- --

0917 1.00 1.00 1.00 4.00 22.00 72.00 122.80 247.80 308.56 2014 1.00 1.00 1.00 2.00 24.00 71.00 130.40 274.64 390.52

0923 -- -- -- 4.25 78.00 118.25 -- -- -- 2015 1.00 1.00 1.00 3.00 21.00 69.00 132.00 237.00 309.20

0926 1.00 1.00 1.00 3.00 13.00 52.00 99.00 187.00 236.86 2019 -- -- -- 6.25 78.50 110.25 -- -- --

0950 -- -- 1.60 2.50 21.00 67.50 88.60 -- -- 2024 1.00 1.00 1.00 2.00 11.00 49.75 98.00 179.56 221.49

0996 -- -- -- 5.00 38.00 127.75 -- -- -- 2042 -- -- -- 1.25 6.50 43.00 -- -- --

1013 1.00 1.00 1.00 1.00 14.00 52.00 110.20 220.40 241.92 2043 -- 1.00 1.00 1.00 6.00 32.25 55.60 101.96 --

1017 1.00 1.00 1.00 2.00 12.00 47.25 92.00 177.50 229.00 2048 1.00 1.00 1.00 1.00 12.00 51.50 93.00 176.04 204.02

1042 -- -- -- 13.25 34.00 106.50 -- -- -- 2050 -- -- 1.00 1.00 7.00 25.00 84.20 -- --

1048 -- -- -- 4.50 20.00 148.50 -- -- -- 2051 -- -- 1.00 2.00 5.00 38.00 84.20 -- --

1053 1.00 1.00 1.00 2.00 10.00 47.00 90.80 144.64 191.88 2053 -- -- -- 1.00 29.00 48.00 -- -- --

1057 1.00 1.00 1.00 3.00 12.00 50.75 94.00 190.50 239.40 2073 1.00 1.00 1.00 3.00 15.00 58.50 107.20 236.88 314.62

1063 -- -- -- 1.50 31.00 119.25 -- -- -- 2082 1.00 1.00 1.00 1.00 5.00 29.00 69.40 139.96 171.62

1068 1.00 1.00 1.00 2.00 12.00 51.00 98.30 177.32 216.49 2086 1.00 1.00 1.00 3.00 13.00 52.00 100.00 179.56 219.34

1080 1.00 1.00 1.00 1.00 8.00 43.00 87.00 279.30 286.55 2088 -- -- 1.00 5.00 22.00 60.25 106.60 -- --

1081 1.00 1.00 1.00 3.00 16.00 56.00 97.10 190.04 220.55 2090 1.00 1.00 1.00 2.50 10.00 54.50 98.60 175.68 184.88

1133 -- -- 1.00 3.25 34.50 60.00 96.90 -- -- 2096 1.00 1.00 1.00 3.00 14.00 50.00 94.00 174.32 216.72

1136 1.00 1.00 1.00 3.00 22.00 71.00 130.00 260.62 314.54 2128 1.00 1.00 1.00 3.50 14.00 49.00 101.40 165.56 230.62

1138 -- -- -- 14.25 73.00 145.00 -- -- -- 2131 1.00 1.00 1.00 2.00 12.00 46.00 88.00 185.00 232.50

1139 -- -- 2.00 5.50 37.00 94.50 153.40 -- -- 2142 -- -- -- 33.00 74.00 237.00 -- -- --

Appendix 4–5.7. Empirical distribution of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in 

Texas.

[--, not available]
296 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

2160 -- -- 1.00 2.50 34.00 109.00 185.20 -- -- 3463 -- -- 1.00 2.75 8.50 71.75 115.80 -- --

2206 1.00 1.00 1.00 2.00 12.00 57.00 117.00 203.88 229.18 3476 1.00 1.00 1.00 2.00 11.00 54.00 99.00 171.64 229.60

2238 1.00 1.00 1.00 2.25 14.00 48.50 92.50 214.50 317.35 3485 -- -- 1.10 5.75 12.50 84.75 253.50 -- --

2240 -- -- 1.00 5.50 19.00 56.50 108.40 -- -- 3507 1.00 1.00 1.00 2.00 16.00 58.00 103.90 197.52 277.18

2242 1.00 1.00 1.00 4.00 22.00 62.00 117.70 221.76 283.00 3546 1.00 1.00 1.00 3.00 17.50 64.00 118.00 209.82 254.69

2244 1.00 1.00 1.00 3.00 19.00 65.00 124.00 218.76 257.88 3547 1.00 1.00 1.00 1.00 8.00 47.00 77.80 159.60 226.48

2247 -- -- 1.00 4.75 13.50 78.75 147.50 -- -- 3579 -- -- 2.00 2.75 20.50 49.50 116.00 -- --

2309 1.00 1.00 1.00 3.00 12.00 65.00 104.00 221.44 248.44 3642 1.00 1.00 1.00 3.00 14.00 57.00 102.60 196.72 239.00

2312 1.00 1.00 1.00 4.00 19.00 69.50 124.00 251.00 289.00 3646 1.00 1.00 1.00 3.00 11.00 44.75 94.00 170.00 212.52

2334 -- -- 1.00 1.00 16.00 55.75 95.30 -- -- 3668 -- -- -- 7.00 76.00 180.75 -- -- --

2336 1.00 1.00 1.00 2.00 7.00 33.00 72.40 154.80 179.56 3673 -- -- -- 7.50 22.00 107.50 -- -- --

2354 -- -- 1.00 3.00 47.00 67.00 98.40 -- -- 3686 1.00 1.00 1.00 3.00 14.00 53.00 100.00 181.34 235.38

2355 -- -- 1.00 2.00 17.50 56.75 87.30 -- -- 3691 1.00 1.00 1.00 2.00 12.00 52.00 99.00 186.80 220.80

2357 1.00 1.00 1.00 2.00 22.00 60.00 107.80 180.96 230.46 3734 -- -- -- 8.00 81.00 161.00 -- -- --

2360 1.00 1.00 1.00 2.00 12.00 45.25 95.00 199.68 234.17 3771 1.00 1.00 1.00 2.00 20.00 57.00 100.80 202.40 238.44

2361 1.00 1.00 1.00 1.00 6.00 29.00 92.40 241.48 289.94 3789 -- 1.00 1.00 1.00 13.00 67.00 140.20 241.00 --

2394 1.00 1.00 1.00 4.00 17.00 58.00 109.00 205.50 249.75 3826 1.00 1.00 1.00 3.50 11.00 40.50 87.20 196.16 262.08

2404 1.00 1.00 1.00 3.00 15.00 54.00 101.00 179.84 231.64 3831 1.00 1.00 1.00 2.00 11.00 47.50 77.00 180.64 215.05

2415 1.00 1.00 1.00 3.00 14.00 56.25 107.10 209.06 251.03 3841 -- 1.00 1.00 2.00 8.00 40.75 87.70 159.42 --

2462 1.00 1.00 1.00 2.00 13.00 46.50 94.80 194.60 246.68 3871 1.00 1.00 1.00 3.00 11.00 47.00 91.00 168.36 207.18

2528 -- 1.00 1.00 4.00 22.00 64.00 85.00 127.12 -- 3884 -- -- -- 6.00 47.50 99.75 -- -- --

2617 1.00 1.00 1.00 3.00 11.50 45.00 87.70 179.74 222.73 3941 -- -- 1.00 5.00 41.00 74.00 103.00 -- --

2619 1.00 1.00 1.00 1.00 8.00 42.50 94.00 202.48 216.10 3963 -- -- -- 1.00 11.00 35.25 -- -- --

2621 1.00 1.00 1.00 2.00 9.00 38.50 79.40 164.56 189.96 4040 1.00 1.00 1.00 2.00 8.00 39.00 81.80 168.04 216.28

2675 1.00 1.00 1.00 2.00 13.00 60.50 119.80 198.12 234.92 4058 -- -- -- 3.50 18.00 101.00 -- -- --

2676 1.00 1.00 1.00 2.00 18.00 63.00 120.80 209.88 238.60 4098 1.00 1.00 1.00 1.00 7.00 42.00 86.50 160.60 210.95

2679 1.00 1.00 1.00 2.00 9.00 45.00 79.00 166.04 220.52 4100 1.00 1.00 1.00 2.00 8.50 43.00 88.20 173.10 189.86

2715 1.00 1.00 1.00 3.00 10.00 42.00 81.30 176.90 253.03 4137 1.00 1.00 1.00 2.00 16.00 54.00 101.00 196.40 276.00

2744 1.00 1.00 1.00 2.00 8.00 44.00 84.00 167.94 216.94 4191 1.00 1.00 1.00 2.00 11.00 49.00 93.80 178.56 209.90

2758 -- 1.00 1.00 2.00 17.00 69.50 110.20 524.60 -- 4256 -- -- -- -- .00 -- -- -- --

2794 -- -- -- 10.00 45.00 71.00 -- -- -- 4257 1.00 1.00 1.00 3.00 14.00 58.00 103.80 203.12 257.56

2797 1.00 1.00 1.00 2.00 10.00 43.50 88.80 202.00 241.62 4258 -- 1.00 1.00 2.25 14.50 74.00 167.00 348.60 --

2811 1.00 1.00 1.00 2.00 9.00 47.00 93.00 165.00 189.25 4278 1.00 1.00 1.00 3.00 9.00 46.00 89.70 160.14 191.49

2813 -- -- 1.00 1.25 5.00 39.00 109.40 -- -- 4299 -- 1.00 1.00 2.00 4.00 23.00 69.00 124.56 --

2814 -- -- -- 1.00 72.00 82.00 -- -- -- 4300 1.00 1.00 1.00 5.00 28.00 84.00 169.00 301.30 347.55

2815 1.00 1.00 1.00 1.00 5.00 33.00 65.80 227.68 254.68 4305 1.00 1.00 1.00 5.00 28.00 92.00 152.00 284.28 340.48

2818 1.00 1.00 1.00 2.00 7.00 38.50 88.00 147.00 287.25 4307 1.00 1.00 1.00 4.00 30.50 92.75 160.70 310.86 416.54

2986 1.00 1.00 1.00 4.00 17.00 61.75 125.50 204.40 239.76 4309 1.00 1.00 1.00 3.00 17.00 65.00 121.00 215.68 272.84

3005 1.00 1.00 1.00 2.00 11.00 50.75 96.70 199.70 234.08 4311 1.00 1.00 1.00 3.00 15.00 61.00 118.60 207.00 262.30

3033 1.00 1.00 1.00 2.00 4.00 30.00 71.00 143.40 153.90 4313 1.00 1.00 2.00 5.00 22.00 54.50 112.60 248.20 309.30

3034 -- -- -- -- 1.00 -- -- -- -- 4319 -- -- 2.00 5.00 23.00 94.50 149.60 -- --

3047 -- -- -- 2.00 61.00 120.00 -- -- -- 4329 1.00 1.00 1.00 3.00 15.00 56.00 109.00 215.40 262.20

3103 -- -- 1.00 1.00 5.00 24.00 79.40 -- -- 4331 -- -- -- -- .00 -- -- -- --

3133 1.00 1.00 1.00 3.00 13.00 54.50 98.60 164.04 201.52 4375 1.00 1.00 1.00 1.25 12.00 48.75 87.00 174.54 217.08

3156 1.00 1.00 1.00 2.00 11.00 42.50 89.00 148.56 189.08 4392 1.00 1.00 2.00 5.00 26.50 74.50 120.00 225.28 254.93

3171 1.00 1.00 1.00 3.00 12.00 49.00 92.00 179.40 225.80 4425 1.00 1.00 1.00 1.00 5.00 33.00 72.00 169.72 209.48

3189 1.00 1.00 1.00 1.00 13.00 52.00 85.00 192.00 273.00 4440 1.00 1.00 2.00 3.00 14.00 51.00 96.00 171.84 221.10

3260 1.00 1.00 1.00 2.00 7.50 31.00 73.10 166.44 172.35 4476 1.00 1.00 1.00 3.00 13.00 47.00 95.00 184.00 218.54

3267 -- 1.00 1.00 3.25 15.50 55.50 108.00 178.02 -- 4498 -- -- -- 1.50 4.00 26.00 -- -- --

3270 1.00 1.00 1.00 1.00 7.00 43.00 81.60 148.00 184.64 4517 1.00 1.00 1.00 2.00 13.00 50.00 91.00 180.80 225.20

3272 -- -- -- 1.50 11.00 78.00 -- -- -- 4520 1.00 1.00 1.00 2.00 14.00 51.00 99.00 201.16 261.34

3277 -- -- 1.00 1.00 13.00 37.00 53.00 -- -- 4525 -- -- -- 3.00 77.00 128.00 -- -- --

3278 1.00 1.00 1.00 1.00 5.00 40.00 92.40 201.44 247.20 4563 -- -- -- 2.50 7.00 200.00 -- -- --

3280 1.00 1.00 1.00 2.00 4.00 28.50 66.00 129.96 206.38 4570 1.00 1.00 1.00 2.00 10.00 47.00 87.00 165.00 200.70

3281 -- -- 1.00 1.00 2.00 7.75 52.60 -- -- 4577 1.00 1.00 1.00 3.00 13.00 58.00 114.00 211.48 278.40

3283 1.00 1.00 1.00 4.00 21.00 70.00 123.80 226.56 324.04 4591 1.00 1.00 1.00 3.00 14.00 62.00 112.90 208.58 274.45

3284 1.00 1.00 1.00 3.00 14.50 55.00 107.00 196.78 253.34 4670 1.00 1.00 1.00 2.00 9.00 46.00 87.00 169.62 211.29

3285 1.00 1.00 1.00 2.00 12.00 50.00 102.00 213.40 262.80 4671 -- 1.00 1.00 1.00 19.00 55.00 97.00 280.36 --

3329 1.00 1.00 1.00 3.00 13.00 51.25 102.00 175.80 232.75 4679 1.00 1.00 1.00 2.00 15.00 55.25 98.00 184.90 226.95

3335 1.00 1.00 2.00 4.00 20.00 54.25 103.20 181.76 239.75 4696 -- -- -- 5.00 33.00 51.00 -- -- --

3370 1.00 1.00 1.00 3.00 11.00 47.00 102.90 192.58 231.58 4703 -- 1.00 1.00 1.75 11.50 66.25 130.10 236.52 --

3410 1.00 1.00 1.00 2.00 9.00 45.00 89.40 166.04 196.08 4704 1.00 1.00 1.00 5.00 20.50 57.50 113.80 207.44 299.03

3415 1.00 1.00 1.00 3.00 15.00 54.00 104.20 193.22 240.83 4731 -- 1.00 1.00 2.00 20.00 65.00 117.00 275.32 --

3430 1.00 1.00 1.00 4.00 23.00 74.00 139.00 257.22 305.00 4792 1.00 1.00 1.00 2.00 10.00 46.00 98.00 191.96 242.76

3431 1.00 1.00 1.00 7.00 34.00 97.00 171.00 281.80 304.30 4819 1.00 1.00 1.00 3.00 14.00 71.50 129.00 242.00 321.50

3441 -- -- 1.00 1.00 13.00 66.00 123.10 -- -- 4852 -- -- -- 3.75 38.50 68.50 -- -- --

3442 1.00 1.00 1.00 3.00 11.50 45.25 83.70 173.80 188.08 4866 1.00 1.00 1.00 3.00 11.00 45.00 91.00 184.64 219.35

3446 1.00 1.00 1.00 2.00 6.00 37.25 71.50 117.70 145.90 4876 -- 1.00 1.00 3.00 20.50 48.00 88.80 229.52 --

3460 -- -- 1.00 2.25 11.50 36.50 112.00 -- -- 4878 1.00 1.00 1.00 4.00 21.00 72.00 124.00 240.96 285.97

3462 -- 1.00 1.00 3.00 11.00 43.00 84.60 235.16 -- 4880 1.00 1.00 1.00 2.00 9.00 45.00 91.00 169.00 202.88

Appendix 4–5.7. Empirical distribution of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Appendix 4 297

4920 1.00 1.00 1.00 2.00 9.00 43.00 84.60 162.72 189.08 5957 1.00 1.00 1.00 2.00 11.00 48.00 94.00 183.24 242.00

4934 -- -- -- 1.00 2.00 39.00 -- -- -- 5958 1.00 1.00 1.00 3.00 17.00 55.75 112.30 152.62 162.72

4972 1.00 1.00 1.00 3.00 11.00 49.00 95.70 173.42 200.14 5973 -- 1.00 1.00 3.00 17.50 65.50 127.90 246.38 --

4973 1.00 1.00 1.20 4.00 14.00 50.00 89.80 196.88 319.24 5996 1.00 1.00 1.00 2.00 12.00 51.00 97.00 179.00 228.63

4974 1.00 1.00 1.00 2.00 9.00 43.00 81.10 172.10 208.00 6017 -- 1.00 1.00 2.00 18.50 76.75 113.80 210.08 --

4975 1.00 1.00 1.00 3.00 17.00 58.00 109.50 196.30 233.30 6024 1.00 1.00 1.00 4.00 18.00 48.00 96.00 164.36 190.52

4978 -- 1.00 1.00 2.00 10.00 46.25 77.20 308.14 -- 6050 -- -- 1.00 6.00 11.00 24.00 99.60 -- --

4979 -- -- -- 11.50 75.50 193.25 -- -- -- 6104 1.00 1.00 1.00 2.00 12.00 58.00 122.80 239.16 288.08

4982 1.00 1.00 1.00 3.00 10.00 43.00 89.00 165.48 203.28 6108 1.00 1.00 1.00 3.00 14.00 54.25 106.00 197.42 241.00

5018 1.00 1.00 1.70 3.00 10.00 44.00 99.00 212.82 260.26 6136 1.00 1.00 1.00 1.00 8.00 44.00 88.60 174.60 206.52

5048 1.00 1.00 1.00 1.00 7.00 31.00 69.40 136.56 174.56 6166 -- 1.00 2.00 3.25 23.00 51.50 92.60 128.02 --

5049 -- 1.00 1.00 1.00 6.00 40.00 78.20 181.72 -- 6176 1.00 1.00 2.00 3.00 16.00 65.00 119.00 213.00 322.00

5056 -- -- -- -- 42.50 -- -- -- -- 6177 1.00 1.00 1.00 3.00 16.00 62.00 116.00 215.52 239.39

5057 1.00 1.00 1.00 2.00 15.00 61.00 116.60 198.36 222.24 6210 1.00 1.00 1.00 3.00 13.00 53.00 100.00 208.80 230.00

5060 1.00 1.00 1.00 2.00 13.00 73.50 128.60 225.80 290.40 6211 1.00 1.00 1.00 3.50 24.00 69.00 121.80 260.44 321.88

5081 1.00 1.00 2.00 4.00 18.00 67.00 118.00 218.20 298.80 6270 1.00 1.00 1.00 3.00 16.00 61.25 109.10 206.68 255.05

5094 1.00 1.00 1.00 2.00 12.00 52.00 101.30 183.66 221.98 6275 -- -- -- -- .00 -- -- -- --

5113 1.00 1.00 1.00 2.00 14.00 53.00 100.00 190.40 229.05 6276 -- -- -- 1.75 27.00 87.25 -- -- --

5114 -- -- -- -- .00 -- -- -- -- 6335 1.00 1.00 1.00 4.00 14.00 57.00 107.00 204.80 231.45

5123 -- -- 1.00 2.00 17.00 31.00 63.20 -- -- 6434 -- -- 4.00 5.75 18.00 34.00 73.00 -- --

5192 1.00 1.00 1.00 3.00 14.00 52.25 101.00 196.72 239.48 6504 1.00 1.00 1.00 1.00 9.00 40.00 90.50 179.10 211.55

5193 1.00 1.00 1.00 3.00 15.00 57.00 112.00 204.80 239.48 6558 -- -- 1.00 2.25 14.50 35.75 60.10 -- --

5224 1.00 1.00 1.00 4.00 21.50 73.75 126.60 254.12 356.15 6615 1.00 1.00 1.00 1.00 7.00 38.25 83.30 183.34 212.10

5228 1.00 1.00 1.00 2.00 12.00 57.00 106.00 233.20 301.40 6660 -- 1.00 1.00 4.00 17.00 57.00 93.40 149.52 --

5235 -- -- 1.00 2.00 22.00 54.50 113.60 -- -- 6663 -- -- 1.00 2.25 26.00 107.50 160.40 -- --

5247 1.00 1.00 1.00 2.00 10.00 47.00 93.00 177.00 225.00 6734 1.00 1.00 1.00 3.00 17.50 59.00 116.50 204.10 220.05

5258 1.00 1.00 1.00 3.00 14.00 53.50 103.60 184.56 276.52 6736 1.00 1.00 1.00 1.00 6.00 36.00 79.00 150.76 189.00

5303 1.00 1.00 1.00 3.00 11.00 43.50 80.20 162.92 201.34 6740 -- -- 1.10 4.25 15.00 49.75 121.00 -- --

5312 1.00 1.00 1.00 1.00 9.00 46.00 97.00 182.32 218.56 6750 1.00 1.00 1.00 1.00 31.00 67.00 160.00 270.50 308.25

5341 -- -- -- 3.00 55.00 83.00 -- -- -- 6757 1.00 1.00 1.00 3.00 17.00 66.00 120.10 221.00 248.55

5342 -- -- -- -- .00 -- -- -- -- 6775 1.00 1.00 1.00 3.00 15.00 56.50 99.00 185.70 198.39

5348 1.00 1.00 1.00 3.00 17.00 61.75 112.60 215.00 248.99 6776 1.00 1.00 1.00 2.00 10.00 51.00 96.80 194.96 257.40

5358 1.00 1.00 1.00 2.00 9.00 43.00 80.20 160.72 189.86 6788 1.00 1.00 1.00 4.00 14.50 59.50 110.90 156.86 185.83

5398 1.00 1.00 1.00 4.00 18.00 68.00 117.00 212.44 251.72 6792 1.00 1.00 1.00 1.00 6.00 41.00 77.00 156.64 222.96

5410 1.00 1.00 1.00 1.00 7.00 41.00 82.00 192.00 238.00 6794 -- -- -- 76.25 102.00 171.25 -- -- --

5411 1.00 1.00 1.00 3.00 15.00 55.00 109.80 210.36 243.62 6834 1.00 1.00 1.00 2.00 15.00 58.25 110.50 198.50 233.50

5424 1.00 1.00 1.00 7.00 35.00 97.00 186.40 380.00 469.00 6893 1.00 1.00 1.00 1.00 4.00 30.25 71.50 147.00 180.45

5429 1.00 1.00 1.00 3.00 13.00 53.00 113.40 185.44 256.88 6935 1.00 1.00 1.00 1.00 7.00 40.00 86.00 169.76 208.00

5431 -- -- 1.20 4.00 22.00 67.00 103.60 -- -- 6981 1.00 1.00 1.00 3.00 17.50 46.00 101.00 168.50 198.05

5461 1.00 1.00 1.00 3.00 11.00 52.00 103.00 187.58 221.79 7020 -- 1.00 1.00 4.00 16.00 49.00 91.80 174.52 --

5463 1.00 1.00 1.00 2.00 13.00 51.00 101.80 177.16 197.56 7060 1.00 1.00 1.00 1.00 7.00 41.00 91.80 179.18 216.06

5471 -- -- -- 1.00 33.00 78.00 -- -- -- 7066 1.00 1.00 1.00 3.00 15.00 59.00 110.00 211.54 260.59

5477 -- -- 1.00 1.00 4.00 27.00 285.60 -- -- 7074 1.00 1.00 1.00 1.00 6.00 41.00 82.00 155.00 196.76

5528 1.00 1.00 1.00 2.00 10.00 43.00 85.00 157.36 208.16 7097 -- 1.00 1.00 2.00 14.00 56.00 120.00 301.20 --

5579 -- -- -- -- 15.00 -- -- -- -- 7116 1.00 1.00 1.00 2.00 10.00 40.75 99.10 188.72 238.93

5580 -- -- -- 12.25 52.00 214.00 -- -- -- 7140 1.00 1.00 1.00 3.00 15.00 57.75 111.50 212.70 278.65

5589 -- 1.00 1.00 2.00 10.00 51.00 87.70 188.84 -- 7173 1.00 1.00 1.00 4.00 27.00 81.00 156.80 349.80 387.14

5590 -- 1.00 1.00 2.00 19.00 65.25 120.70 220.60 -- 7174 1.00 1.00 1.00 5.00 27.00 86.00 170.00 311.16 362.08

5591 1.00 1.00 1.00 2.00 5.00 40.00 86.60 157.72 172.86 7213 1.00 1.00 1.00 2.00 14.00 53.50 98.30 205.44 240.02

5592 1.00 1.00 1.00 2.00 6.00 35.75 83.60 178.42 218.26 7243 1.00 1.00 1.00 2.00 13.00 52.00 98.00 187.64 223.10

5594 1.00 1.00 1.00 2.00 3.50 27.25 73.50 157.90 181.70 7262 -- 1.00 1.00 1.00 7.00 49.00 67.00 224.44 --

5595 -- -- -- -- 71.00 -- -- -- -- 7274 1.00 1.00 1.00 2.00 6.00 26.00 65.00 103.62 119.86

5596 1.00 1.00 1.00 1.00 10.00 51.00 97.20 189.36 215.76 7300 1.00 1.00 1.00 2.00 9.00 39.00 83.40 170.44 216.76

5600 1.00 1.00 1.00 2.00 5.00 41.50 75.00 187.20 229.00 7311 -- -- 1.00 1.25 7.00 37.25 101.00 -- --

5618 -- -- -- 7.00 14.00 147.50 -- -- -- 7363 -- -- -- 4.50 67.50 113.00 -- -- --

5650 -- -- -- 6.50 12.50 109.50 -- -- -- 7422 1.00 1.00 1.00 2.00 13.00 50.00 97.40 187.12 218.28

5656 1.00 1.00 1.00 1.00 11.00 47.00 94.00 177.84 218.55 7431 1.00 1.00 1.00 2.00 5.00 30.00 73.00 145.62 173.39

5658 1.00 1.00 1.00 3.00 10.00 43.00 91.70 152.00 176.43 7481 1.00 1.00 1.00 2.00 6.00 38.00 75.00 127.90 147.60

5661 1.00 1.00 1.00 1.00 13.00 49.25 94.40 194.08 206.55 7497 1.00 1.00 1.00 2.00 17.00 58.00 104.00 205.38 238.30

5666 -- -- 1.00 2.00 10.00 52.50 106.60 -- -- 7498 1.00 1.00 1.00 2.00 10.00 55.00 131.00 213.16 255.64

5695 1.00 1.00 1.00 2.50 12.00 52.00 97.00 171.08 201.72 7499 1.00 1.00 1.00 2.00 12.00 48.00 93.00 172.48 207.00

5742 -- -- 1.20 3.75 17.00 37.75 211.60 -- -- 7531 -- 1.00 1.00 4.00 16.50 59.25 104.10 186.68 --

5766 -- -- -- 56.00 109.00 201.00 -- -- -- 7534 1.00 1.00 1.00 2.00 11.00 51.50 93.70 186.68 189.98

5770 1.00 1.00 1.00 2.00 13.00 53.00 101.00 177.64 224.30 7556 1.00 1.00 1.00 2.00 12.00 50.00 95.00 178.80 233.34

5775 -- -- -- 1.00 30.00 48.00 -- -- -- 7594 1.00 1.00 1.00 3.00 11.00 55.00 112.50 204.50 245.75

5779 -- -- 1.00 4.00 15.00 60.00 81.40 -- -- 7596 1.00 1.00 1.00 2.00 9.50 34.75 74.00 142.70 181.41

5840 1.00 1.00 1.00 3.00 9.00 38.00 84.00 205.60 263.80 7608 1.00 1.00 1.00 3.00 18.00 67.00 115.00 213.40 249.30

5890 1.00 1.00 1.00 2.00 10.00 46.00 92.00 184.86 207.72 7622 -- -- 1.00 1.00 2.00 30.75 158.50 -- --

5891 1.00 1.00 1.00 2.00 8.00 33.00 56.80 166.48 179.92 7700 1.00 1.00 2.00 5.00 23.00 74.00 127.00 266.40 295.10

5897 1.00 1.00 1.00 3.00 17.00 54.00 106.00 183.20 247.30 7706 1.00 1.00 1.00 2.00 11.00 50.00 90.00 167.74 210.70

Appendix 4–5.7. Empirical distribution of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
298 Statistical Characteristics of Storm Interevent Time, Depth, and Duration for Eastern New Mexico, Oklahoma, and Texas

7718 -- 1.00 1.00 2.00 10.00 40.00 96.00 265.88 -- 8910 -- -- -- 3.00 5.00 106.50 -- -- --

7745 1.00 1.00 1.00 4.00 26.00 73.50 121.60 232.16 254.58 8911 1.00 1.00 1.00 2.00 12.00 65.00 120.00 249.60 302.00

7922 1.00 1.00 1.00 2.00 6.50 32.50 77.80 172.12 231.26 8924 1.00 1.00 1.00 2.00 4.00 28.00 67.00 139.44 206.58

7936 1.00 1.00 1.00 4.00 18.00 66.00 123.00 239.12 298.26 8929 -- -- -- 1.00 5.00 63.00 -- -- --

7943 1.00 1.00 1.00 2.00 11.00 50.00 96.00 178.20 204.30 8942 1.00 1.00 1.00 3.00 16.00 63.00 118.00 225.80 288.70

7944 -- -- 1.00 8.50 34.00 107.00 154.80 -- -- 8944 1.00 1.00 1.00 3.00 17.00 67.00 125.00 267.60 315.08

7945 1.00 1.00 1.00 3.00 23.00 69.00 129.50 246.00 286.95 8996 1.00 1.00 1.00 3.00 19.00 68.50 124.00 224.00 290.74

7947 1.00 1.00 1.00 2.50 20.00 59.00 117.00 296.60 349.10 9014 -- -- -- 13.00 47.00 121.00 -- -- --

7948 1.00 1.00 1.00 2.00 10.00 44.00 86.20 177.88 216.68 9037 1.00 1.00 1.00 2.00 6.00 30.00 72.10 134.66 148.22

7951 1.00 1.00 1.00 3.00 14.00 63.50 119.40 219.16 269.14 9106 1.00 1.00 1.00 2.00 4.00 31.00 75.00 203.70 225.30

7953 -- 1.00 2.00 2.00 7.00 56.25 103.40 200.80 -- 9107 -- -- 1.00 1.00 2.00 32.25 102.00 -- --

7981 1.00 1.00 1.00 2.00 8.00 45.50 80.00 178.56 197.96 9129 -- 1.00 1.00 3.00 9.00 52.00 97.80 173.48 --

7990 -- 1.00 1.00 3.00 25.50 81.75 196.10 295.84 -- 9163 1.00 1.00 1.00 2.00 11.00 48.00 94.20 187.08 212.02

7992 -- -- -- 10.50 71.00 229.25 -- -- -- 9213 1.00 1.00 1.00 1.00 25.00 73.00 147.40 299.48 370.06

7997 -- 1.00 1.00 2.00 7.50 34.50 59.50 112.00 -- 9214 -- -- -- 59.25 117.00 233.00 -- -- --

7999 -- -- 1.00 2.50 7.00 37.50 54.20 -- -- 9222 1.00 1.00 1.00 5.00 23.00 56.00 117.20 231.28 241.00

8022 -- -- 1.00 2.00 4.50 30.00 72.10 -- -- 9248 -- 1.00 1.00 2.00 12.50 30.25 68.30 133.34 --

8023 1.00 1.00 1.00 2.00 6.00 37.00 76.70 156.28 187.28 9266 -- 1.00 1.00 2.25 10.50 37.25 74.50 148.08 --

8047 1.00 1.00 1.00 2.00 11.00 49.75 94.00 170.20 216.10 9270 1.00 1.00 1.00 1.00 8.00 52.00 101.80 211.12 240.76

8060 -- 1.00 1.00 2.00 7.50 56.75 118.80 270.66 -- 9295 -- 1.00 1.00 1.00 7.00 70.00 129.40 212.92 --

8062 -- -- 1.00 3.75 31.00 41.25 81.20 -- -- 9304 -- -- -- -- 20.50 -- -- -- --

8068 -- -- 1.00 5.50 24.00 48.00 72.60 -- -- 9307 1.00 1.00 1.00 2.00 8.00 38.00 85.80 161.88 214.40

8081 1.00 1.00 1.00 2.00 12.00 52.00 97.00 204.44 254.72 9328 1.00 1.00 1.00 2.00 8.50 52.75 121.20 233.94 256.40

8089 -- -- 1.00 2.00 6.00 64.75 112.40 -- -- 9329 -- -- -- 3.00 23.00 95.00 -- -- --

8221 -- -- -- 10.00 29.50 115.75 -- -- -- 9345 -- -- -- -- 10.00 -- -- -- --

8252 1.00 1.00 1.00 2.00 6.00 36.00 73.50 149.10 187.15 9363 1.00 1.00 1.00 3.00 27.00 80.00 145.40 266.92 303.84

8265 1.00 1.00 2.00 4.00 22.00 72.00 127.30 243.06 300.53 9364 1.00 1.00 1.00 3.00 25.00 74.00 144.00 261.00 295.28

8289 -- -- 1.00 3.00 19.00 52.00 74.80 -- -- 9365 -- -- 1.90 2.00 27.00 66.50 102.10 -- --

8305 1.00 1.00 1.00 1.00 6.00 39.00 77.20 164.00 205.00 9371 -- 1.00 1.00 2.75 23.50 68.25 115.20 207.36 --

8335 1.00 1.00 1.00 3.00 15.00 60.00 104.60 210.64 243.44 9417 1.00 1.00 1.00 3.00 13.00 52.00 104.10 199.00 257.86

8400 1.00 1.00 1.00 1.00 10.00 52.00 92.60 186.08 210.88 9419 1.00 1.00 1.00 4.00 21.00 66.25 126.00 222.62 283.31

8445 1.00 1.00 2.00 4.00 18.00 65.00 114.50 208.00 270.00 9435 -- 1.00 1.00 1.00 6.50 50.50 73.00 215.82 --

8446 1.00 1.00 1.00 3.00 15.00 61.00 112.00 215.08 250.04 9491 1.00 1.00 1.00 3.00 16.00 58.75 114.50 222.30 257.30

8451 1.00 1.00 1.00 2.00 9.50 47.00 84.10 139.62 144.31 9499 1.00 1.00 1.00 1.00 8.00 42.00 81.00 162.40 184.60

8531 1.00 1.00 1.00 2.00 11.00 46.00 101.20 193.28 262.84 9522 -- -- -- 3.25 11.00 273.00 -- -- --

8541 -- 1.00 2.00 4.00 9.50 42.00 75.10 223.04 -- 9527 1.00 1.00 1.00 1.00 8.00 47.00 89.90 183.74 242.00

8544 1.00 1.00 1.00 3.00 16.00 58.00 102.00 202.00 243.00 9532 1.00 1.00 1.00 3.00 12.00 51.50 97.00 172.24 217.00

8545 -- -- 1.90 10.25 20.50 64.75 103.90 -- -- 9544 -- -- -- 1.00 3.00 17.00 -- -- --

8563 1.00 1.00 1.00 2.00 14.00 49.00 87.40 177.64 231.10 9565 1.00 1.00 1.00 2.00 8.00 49.00 99.00 156.00 199.40

8566 1.00 1.00 1.00 2.00 7.50 47.00 96.00 177.94 209.26 9570 1.00 1.00 1.00 1.00 13.00 55.00 107.00 193.10 267.50

8583 1.00 1.00 1.00 1.00 13.50 49.75 92.60 174.06 185.21 9574 -- -- 7.20 31.00 50.00 82.00 113.00 -- --

8584 1.00 1.00 1.00 2.00 9.00 44.00 84.00 161.24 194.08 9588 1.00 1.00 1.00 2.00 10.00 49.00 98.80 197.00 220.18

8623 1.00 1.00 1.00 2.00 12.00 48.75 91.00 160.72 203.93 9665 1.00 1.00 1.00 3.00 13.00 53.00 99.00 187.28 225.07

8625 1.00 1.00 2.00 4.00 13.00 54.00 99.00 170.20 209.70 9715 1.00 1.00 1.00 3.00 12.00 52.00 103.60 199.96 234.88

8630 1.00 1.00 1.00 2.00 7.00 32.00 71.00 154.30 179.55 9729 1.00 1.00 1.00 4.00 17.00 58.00 111.00 205.00 256.92

8631 1.00 1.00 1.00 2.00 7.00 39.75 79.80 152.04 190.66 9772 1.00 1.00 1.00 3.00 16.00 66.00 130.60 257.32 296.84

8646 1.00 1.00 1.00 3.00 12.00 49.00 100.00 187.00 216.60 9814 -- -- 2.00 3.00 13.00 86.00 138.90 -- --

8647 1.00 1.00 1.00 1.00 10.00 50.00 92.10 199.28 238.28 9815 1.00 1.00 1.00 3.00 16.00 60.25 107.80 217.40 247.70

8677 1.00 1.00 2.00 4.00 10.00 41.00 88.40 162.52 200.44 9816 -- 1.00 1.00 1.00 4.00 26.00 79.70 222.06 --

8696 -- -- -- 5.00 32.50 123.00 -- -- -- 9817 1.00 1.00 1.00 2.00 9.00 42.00 83.00 177.12 229.28

8743 1.00 1.00 1.00 4.00 17.00 61.00 111.00 208.28 251.32 9829 1.00 1.00 1.00 1.00 6.00 37.50 75.00 141.44 186.54

8761 1.00 1.00 1.00 1.00 6.00 35.00 84.00 161.40 179.80 9830 1.00 1.00 1.00 2.00 5.00 27.50 74.00 179.64 202.56

8778 1.00 1.00 1.00 3.00 16.00 60.50 115.00 202.00 232.00 9858 1.00 1.00 1.00 2.00 8.00 44.00 85.00 183.18 207.72

8845 1.00 1.00 1.00 2.00 15.00 55.00 104.00 204.00 249.45 9893 1.00 1.00 1.00 2.00 11.00 49.00 91.00 170.10 200.25

8859 1.00 1.00 1.00 3.00 14.00 58.00 112.80 198.76 226.38 9916 1.00 1.00 1.00 4.00 18.00 56.00 101.10 229.74 254.73

8898 1.00 1.00 2.00 4.00 15.00 48.50 106.20 182.20 225.74 9976 1.00 1.00 1.00 2.00 9.00 46.00 87.00 178.82 201.41

8908 -- -- 1.80 3.00 17.00 101.00 172.00 -- --

Appendix 4–5.7. Empirical distribution of storm duration defined by 72-hour minimum interevent time for hourly rainfall stations in 

Texas—Continued.

Duration

(hours)

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile

Station

no.

1st

percentile

2nd

percentile

10th

percentile

25th

percentile

50th

percentile

(median)

75th

percentile

90th

percentile

98th

percentile

99th

percentile
Glossary 299

Statistical Characteristics of Storm Interevent 

Time, Depth, and Duration for Eastern New 

Mexico, Oklahoma, and Texas

Glossary

Best-management practice (BMP)—A practice, inclusive of structures, or combination of practices that controls or otherwise 

mitigates stormwater runoff and associated contaminants (for example, a detention pond).

Drawdown time—Time required for a structure that stores water to completely drain.

L-CV—The coefficient of L-variation, which is the ratio of L-scale divided by the mean. L-CV is a measure of the dimensionless 

variability of the distribution or sample data. 

L-kurtosis—The fourth L-moment ratio, which is the ratio of the fourth L-moment divided by the L-scale. L-kurtosis measures the

peakness of the distribution. 

L-moments—Summary statistics for probability distributions and data samples. L-moments are analogous to ordinary or product 

moments. L-moments provide measures of location, dispersion, skewness, kurtosis, and other characteristics of probability 

distributions or data samples. 

L-moment ratio diagram—L-moment ratio diagrams are used for graphical evaluation of the goodness of fit of candidate 

distributions to the sample L-moments. Specifically, the theoretical values of L-skew and L-kurtosis of each distribution are 

compared to those of the data.

L-scale—The second L-moment, which measures the variability of the distribution or the sample data. 

L-skew—The third L-moment ratio, which is the ratio of the third L-moment divided by the L-scale. L-skew measures the 

skewness or asymmetry of the distribution or sample data. 

Memoryless—Refers to expected absence of storage in a BMP before runoff from the next storm arrives. For example, the 48-hour 

minimum interevent time, by definition, ensures that storage in the BMP is zero before runoff from the next storm arrives. 

Minimum interevent time (MIT)—A minimum time during which no rainfall occurs. Storms are defined by specifying minimum 

interevent time.

Tau5—The fifth L-moment ratio, which is the ratio of the fifth L-moment divided by the L-scale. Tau5 has no general 

interpretation, unlike L-skew or L-kurtosis. 

—Nonexceedence probability.

—Dimensionless variable. Dimension is restored by multiplying curve ordinates by the mean storm depth or mean storm 

duration to produce quantile functions of storm depth and duration. 

—Random variable of either storm depth or duration.

—Dimensionless quantile function (a dimensionless frequency curve) for nonexceedance probability .

—Quantile function for nonexceedance probability .

—Exponential mean interevent time, in days. The parameter is used in conjunction with MIT to obtain storm interevent time 

distribution.

—Generic symbol for arithmetic mean.

 and —Dimensionless parameters of the cumulative distribution function of the gamma distribution.

—Complete gamma function of .

—Dimensionless location parameter of the cumulative distribution function of the kappa distribution.

—Dimensionless scale parameter of the kappa distribution.

 and —Dimensionless shape parameters of the kappa distribution.

F

x ( ) x

X

x F( ) F

X F( ) F

Λ Λ

μ

θ β

Γ θ() θ

ξ

α

κ h
Prepared by the USGS Texas Water Science Center:

8027 Exchange Drive

Austin, TX 78754–4733

Information regarding water resources in Texas is available at 

http: //tx.usgs.gov/
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