DISCLAIMER -- THIS IS NOT AN EARTHQUAKE PREDICTION OR WARNING!
  The commentary provided with these map(s) is for INFORMATIONAL
USE ONLY, and SHOULD NOT be construed as an earthquake prediction,
warning, or advisory.  Responsibility for such warnings rests with
the Office of Emergency Services of the State of California.
PLEASE REMEMBER -- THIS ARE PRELIMINARY DATA
  Releasing these summaries on a timely basis requires that the
data, analysis, and interpretations presented are PRELIMINARY. Of
necessity they can only reflect the views of the seismologists who
prepared them, and DO NOT carry the endorsement of the U.S.G.S.
Thus while every effort is made to ensure that the information is
accurate, nothing contained in this report is to be construed as
and earthquake prediction, warning, advisory, or official policy
statement of any kind, of the U.S. Geological Survey, or the
U.S. Government.
FOR QUESTIONS CONCERNING THIS REPORT
  Send e-mail to andy@pangea.stanford.edu


Seismicity Report for Northern California,
the Nation, and the World for the week of
   August 19 - 25, 1993

Data and text prepared by
  Steve Walter, Barry Hirshorn, and Allan Lindh
U.S. Geological Survey
345 Middlefield Rd.  MS-977, Menlo Park, CA  94025
Graphics by Quentin Lindh

San Francisco Bay Area    
    
   For the 7-day period ending at midnight on Wednesday, August 25, 1993
the U.S. Geological Survey office in Menlo Park recorded 20 earthquakes of
magnitude one (M1) and greater within the San Francisco Bay area shown in
Figure 1. Three of these were as large as M2.0, though just barely.  This
total compares to 26 earthquakes during the previous week (August 12 -
18), ten of which were as large as M2.0.  
   It was a fairly quiet week in the area with only the San Gregorio fault
showing any activity at all out of the ordinary.   Early Sunday morning a
very small M1.1 earthquake occurred along this fault just north of Ano
Nuevo (#3 in figure 1).  Just an hour later, a M2.0 occurred on the
southern end of this fault (#4/1).  This small earthquake, located eleven
miles west of Santa Cruz, was followed about two hours later by a M1.6
aftershock.  
    The San Andreas was quiet during the week with nothing more than a few
M1 earthquakes.  The first of these was a M1.3 late Saturday morning about
one mile southeast of Pacifica (#2/1).   The only other earthquakes were a
pair of M1's later in the week about nine miles south of Hollister.     
The East Bay experienced minor activity on both the Concord and Calaveras
faults.  The Concord activity consisted of two M1 events, the largest a
M2.0 early Tuesday morning that was located near the southern end of the
Concord fault about 6 miles north of San Ramon (#5/1).  A slightly smaller
M1.6 had occurred at the north end of the Concord fault,  just after
midnight last Friday.  The southern and central Calaveras experienced ten
earthquakes larger than M1.0, the largest a M2.0 last Saturday morning
that was located about 6 miles northeast of Milpitas (#1/1).  
        
Northern & Central California

  The largest earthquake in the region during the past week was a M3.5 in
the Geysers area east of Cloverdale (#5/2).  This is the third week in a
row that this area has experienced a M3 earthquake.  
   To the north, the Cape Mendocino area was quiet with only a few M2's
along the fracture zone just west of the Cape (3/2).  
   The northern Sierra Nevada experienced a couple of earthquakes worth
mentioning.  First, a M2.2 occurred early Monday morning about 9 miles
south-southwest of Reno (#4/2).  Second, a M3.2 occurred early Wednesday 
afternoon about 19 miles south of Portola (#6/2).  No reports were
received that this earthquake was felt but given its size and the time of
day, it is likely that it was felt locally.
   Central California experienced several earthquakes larger than M2. 
Late last Thursday morning two earthquakes occurred about ten miles north
of Coalinga (#1/2). The largest of these was M3.0; it was preceded by a
M2.5 three minutes earlier.  The following day a M2.0 occurred along the
Big Sur Coast about 16 miles northwest of San Simeon (#2/2). 
       
Long Valley Caldera
    
  Aftershocks of the August 10, M4.5 earthquake continued in the Red Slate
Mountain area.  The largest of these aftershocks was a M3.7 early last
Thursday morning that was felt in the city of Mammoth Lakes; it was
preceded an hour earlier by a pair of M2 foreshocks (#1/3).  This activity
was actually 1-2 km farther north of epicenters of previous earthquakes in
this sequence, suggesting the north-south oriented rupture is continuing
to extend to the north.  The full length of the rupture continued to be
active with at least four M2 events along the southern half rupture, the
largest of these a M2.8 Saturday evening (#4/3).  
  Other earthquakes south of the caldera worth mentioning include a pair
of M2.7's southeast of Convict Lake (#2/3) and a M2.4 on the Hilton Creek
fault (#3/3).  
  Activity picked up inside the caldera later in the week with M1 and M2
earthquakes scattered from the east end of the south moat north to the
south edge of the resurgent dome.  The first and largest of these caldera
earthquakes was a M2.7 on Tuesday evening (#6/3).  

USA Seismicity (August 19 - 25)
  
  According to information supplied by the National Earthquake Information
Center, during the past week only one earthquake in the lower 48 states
outside of California.  This M3.6 earthquake occurred early last Thursday
afternoon in the Yellowstone region of Wyoming and was likely felt by
visitors to the Park (#2/4).  
  Activity in California, not already covered above, included a pair of
M3's along the California-Nevada border (#1,#3/4) and a M4.7 last Friday
evening that was widely felt in San Bernardino and Riverside counties
(#3/4).  This earthquake was an aftershock to the M7.3 Landers earthquake
that occurred in April, 1992.  This is the largest aftershock in some time
but it caused little damage and no injury.

The Planet Earth  (August 14 - 25)

   The western Pacific rim continued to be the most active region on the
planet, as is often the case.  During the past week, the largest
earthquake occurring in this region was a Ms6.3 beneath western highlands
of Papua New Guinea (#3/5).  Many buildings were reported to have been
badly damaged in villages in the area but injuries were apparently only
minor.   No other M6 events occurred in the region but M5's struck in
Halmahera, Indonesia (Mb5.4), Luzon, Philippines (Mb5.3), the Mariana
Islands (Mb5.5 & Mb5.4), Mindanao, Philippines (Mb5.4 & Mb5.2), south of
the Tonga Islands (Mb5.6), and in the Fiji Islands region (Mb5.7).
   The largest earthquakes in the western hemisphere were a Mb5.5 near the
coast of Guatemala (#4/5), a Ms5.4 in the Dominican Republic (#2/5), and a
pair of M4.7's in northern Alaska (#1/5).

 Table 1. Northern & Central California Seismicity (M>1.0)
--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

93 AUG 19  701 59.08 40 36.01 122 51.67 13.39 11   .21  .9 1.4 KLA   1.7
93 AUG 19  712  6.18 37 30.58 118 53.05  4.86 30   .11  .3 1.4 MOR   2.0
93 AUG 19  718  0.68 38 50.42 122 47.33  1.42  8   .03  .3  .9 GEY   1.1
93 AUG 19  813 27.85 37 33.68 118 53.10  5.98 38 3 .13  .3  .6 MOR   3.0
93 AUG 19  851 22.84 37 33.47 118 53.09  5.97 32   .12  .3  .7 MOR   2.5

93 AUG 19  914 37.05 37 33.83 118 53.05  6.04 37 1 .12  .3  .7 MOR   3.6
93 AUG 19 1005 23.05 37 33.34 118 53.05  5.89 34   .13  .3  .8 MOR   2.7
93 AUG 19 1018 35.23 37 30.46 118 53.26  0.01 11   .03  .7 8.3 MOR-- 1.4
93 AUG 19 1020 37.26 37 30.36 118 53.26  0.02 13   .07  .4 9.5 MOR-- 1.5
93 AUG 19 1026 35.36 37 33.19 118 52.95  5.67 28   .11  .3  .8 MOR   2.2

93 AUG 19 1048  2.75 37 33.20 118 52.73  6.23 15   .11  .4 1.2 MOR   1.5
93 AUG 19 1050 58.56 37 34.01 118 52.58  6.58 11   .08  .7 1.0 MOR   1.0
93 AUG 19 1232 39.16 37 33.66 118 52.38  8.84  9   .06  .8 1.4 MOR   1.1
93 AUG 19 1252 37.00 37 16.00 121 38.60  7.51 37 1 .05  .2  .4 SFL   1.8
93 AUG 19 1258 41.94 37 32.45 118 53.21  1.90  7   .10  .911.6 MOR - 1.1

93 AUG 19 1321 51.58 40 13.34 124  8.35 12.52 14 1 .12  .6  .8 MEN   1.4
93 AUG 19 1513 12.03 40 34.46 121 35.62  2.94  8 1 .21 1.2 4.8 SHA   1.9
93 AUG 19 1607 23.65 37 16.62 121 38.82  9.00 30 1 .07  .2  .6 SFL   1.5
93 AUG 19 1621  4.16 37 31.48 118 52.66  2.08 10   .06  .4 7.5 MOR-- 1.1
93 AUG 19 1707 44.85 37 37.87 118 52.19  8.06 27 3 .08  .3  .4 SMO   2.1

93 AUG 19 1708 33.13 36 16.70 120 23.82 10.07 32 1 .09  .2  .4 COA   2.7
93 AUG 19 1711 31.22 36 16.76 120 24.04  9.30 55   .18  .2  .4 COA   3.0
93 AUG 19 1713 48.79 37 36.33 118 50.38  7.92 13   .11  .5  .9 SMO   1.6
93 AUG 19 1832 19.00 37 31.75 118 52.56  0.69 15   .13  .6 3.0 MOR   1.6
93 AUG 19 1833 33.64 37 38.35 118 51.69  8.18 13   .08  .5  .7 SMO   1.5

93 AUG 19 1935 49.18 37 33.66 118 53.04  4.97 12   .10  .8 1.1 MOR   1.7
93 AUG 19 2008  7.30 37 31.99 118 53.08  4.69 30 3 .11  .4  .8 MOR   2.1
93 AUG 19 2040 10.69 38 48.16 122 48.78  4.29  7   .01  .3  .8 GEY   1.0
93 AUG 19 2317 23.17 36 19.11 120 29.97 10.44  7   .13  .6 1.1 COA   1.5
93 AUG 20   35 12.27 37 31.60 118 52.67  2.04 10   .03  .7 7.8 MOR - 1.3

93 AUG 20   45 10.16 38 49.25 122 47.88  3.77 10   .07  .3  .7 GEY   1.5
93 AUG 20  114  1.39 38 47.67 122 46.20  0.83 11   .06  .3  .7 GEY   1.6
93 AUG 20  127  6.13 38 47.47 122 45.23  0.03  8   .02  .3 1.1 GEY * 2.0
93 AUG 20  154 18.35 38 49.83 122 48.35  0.04 12   .13  .3 1.3 GEY * 1.7
93 AUG 20  404 18.53 37 31.93 118 52.01  1.48 10   .16  .715.0 MOR - 1.1

93 AUG 20  617 15.17 37 37.42 118 53.45  2.00 15 2 .09  .3  .3 SMO   2.0
93 AUG 20  639 55.06 37 32.14 118 52.46  2.45 13   .11  .6 9.7 MOR - 1.5
93 AUG 20  817 50.05 37 29.10 118 52.32  0.44 16   .10  .7 9.2 MOR - 1.5
93 AUG 20  909 46.14 38 48.90 122 48.44  3.36 18   .06  .2  .6 GEY   1.7
93 AUG 20 1100 19.42 37 31.00 118 52.87  0.64 12   .12  .6 9.4 MOR-  1.0

93 AUG 20 1202 12.69 38 47.68 122 47.87  1.49  7   .02  .3  .5 GEY   1.6
93 AUG 20 1208 23.05 37 31.21 118 48.45 15.62 11   .05  .5 1.6 MOR   1.1
93 AUG 20 1311 26.44 37 37.83 118 49.74  9.49 11   .08  .8  .9 HCF   1.5
93 AUG 20 1342 48.08 37 31.65 118 53.08  0.17 17   .05  .3 3.7 MOR * 1.8
93 AUG 20 1350  7.50 38 49.23 122 48.22  3.37 15   .06  .3  .6 GEY   1.6

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

93 AUG 20 1421 24.01 37 31.80 118 52.58  4.72 29   .12  .4 1.0 MOR-  1.6
93 AUG 20 1422 48.31 37 31.98 118 53.04  3.18 27   .15  .4 1.8 MOR-  1.9
93 AUG 20 1431 22.46 37 31.35 118 52.39  5.64 13   .05  .4  .9 MOR-  1.2
93 AUG 20 1453 48.86 37 32.03 118 52.51  1.81 12   .08  .710.3 MOR - 1.5
93 AUG 20 1514 55.59 37 33.95 118 50.22  6.44  9   .16 2.8 1.9 MOR   1.0

93 AUG 20 1516 15.11 38 46.37 122 44.76  2.67 14   .05  .2  .7 GEY   1.6
93 AUG 20 1611 47.90 37 31.61 118 52.90  5.35 16 1 .16  .6 1.7 MOR-  1.4
93 AUG 20 1702 37.40 37 16.32 121 38.61  8.81 38   .07  .2  .5 SFL   1.6
93 AUG 20 1825 46.36 37 31.56 118 52.86  2.11  9   .03  .5 8.4 MOR - 1.0
93 AUG 20 1928  5.59 37  7.57 121 31.57  2.61  8 1 .07  .7  .6 CYN   1.0

93 AUG 20 1958 53.60 37 31.61 118 52.99  3.66 21   .11  .4 1.4 MOR   1.9
93 AUG 20 2007 10.26 37 20.02 121 41.88  7.02 28   .07  .2  .6 SFL   1.5
93 AUG 20 2046 58.51 35 44.14 121 27.26  0.00 16   .43 3.315.0 SSM * 2.0
93 AUG 20 2052  2.81 36 33.84 121  9.28  3.76 15 1 .05  .3  .7 PIN   1.0
93 AUG 20 2052 35.15 37 32.92 118 26.50  8.16 10   .03  .4  .6 CHV   1.1

93 AUG 20 2213 38.33 38 49.26 122 47.91  3.55  9   .07  .4  .8 GEY   1.1
93 AUG 20 2230 53.90 37 39.73 118 54.10  5.86  8 1 .03  .9 1.0 DOM   1.0
93 AUG 20 2232  6.22 37 30.86 118 53.00  5.68 28 2 .14  .4 1.1 MOR   1.7
93 AUG 20 2247  8.05 37 34.54 118 50.72  6.64 22   .13  .5  .8 MOR   2.7
93 AUG 20 2316 55.42 37 39.25 118 54.00  6.03 13   .09  .4  .7 DOM   1.3

93 AUG 21  115 31.24 38 47.83 122 48.15  3.73 28   .08  .2  .4 GEY   1.8
93 AUG 21  120 16.30 38 23.68 118 24.09  6.09 14 1 .17 1.513.8 NEV-- 2.2
93 AUG 21  222 53.74 37 34.31 118 50.52  7.16 16   .06  .4  .6 MOR   1.5
93 AUG 21  238 10.12 37 37.61 118 50.27 10.28 21   .09  .4  .7 HCF   1.9
93 AUG 21  311 33.01 40 21.50 124 27.18  0.00 11   .25 2.5 4.2 MEN * 2.3

93 AUG 21  349 10.54 37 34.68 118 47.64  3.56 23   .13  .4  .9 MOR   2.4
93 AUG 21  450 50.50 37 31.80 118 53.06  3.94  7   .04 1.6 7.4 MOR - 1.2
93 AUG 21  452 25.82 36 42.73 121 21.47  2.90  8   .07  .4  .6 STN   1.0
93 AUG 21  527 20.40 37 33.86 118 49.55  5.27 10   .04  .5  .6 MOR   1.1
93 AUG 21  549 10.62 37 32.05 118 52.95  3.19  9   .03  .8 4.5 MOR   1.0

93 AUG 21  635 28.59 38 47.40 122 44.90  0.58 12   .07  .3  .8 GEY   1.6
93 AUG 21  817 31.96 37 58.94 122  3.39 13.72  8   .11 1.3 1.9 CON   1.6
93 AUG 21  854  2.73 37 30.93 118 51.28  1.10  8   .13 4.513.0 MOR - 1.3
93 AUG 21  958  2.80 38 49.53 122 47.66  2.29 16   .04  .2  .5 GEY   1.6
93 AUG 21 1205 45.53 37 32.30 118 53.78  2.04 10   .13 1.913.3 SIL - 1.6

93 AUG 21 1417 25.98 37 29.84 121 50.81 10.20 48 2 .13  .2  .5 MIS   2.0
93 AUG 21 1436 54.00 37 29.86 118 52.45  7.89 36 5 .12  .3 1.2 MOR   2.6
93 AUG 21 1819 49.94 37 37.46 122 28.07  7.73 14 1 .17  .7 1.0 SFP   1.2
93 AUG 21 1847 58.05 37 32.30 118 52.39  2.08  9   .14 1.212.7 MOR - 1.1
93 AUG 21 1911 53.83 38 41.87 119 39.14  0.64 12 2 .08 1.1 3.4 WAK * 2.1

93 AUG 21 1925 13.53 37 34.46 118 50.65  6.70 25   .13  .5  .7 MOR   1.8
93 AUG 21 1930 23.07 37 37.24 118 49.31 10.53  8   .05  .7 1.6 HCF   1.0
93 AUG 21 2001  6.99 38 46.34 122 43.17  2.53 21   .14  .3  .6 GEY   2.0
93 AUG 21 2208  5.28 39 10.01 123 12.89  5.92 16   .08  .3 1.3 MAA   1.5
93 AUG 21 2320 42.59 37 38.21 118 50.48  7.71  7   .02  .7  .5 HCF   1.0

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

93 AUG 21 2327 28.14 37 37.66 118 50.22  8.44 11   .06  .4  .8 HCF   1.1
93 AUG 22   44 18.19 35 58.15 120 30.99  8.46  7   .01 1.4 1.3 MID   1.1
93 AUG 22   56 20.06 37 33.31 118 53.14  4.46 11   .03  .5 1.1 MOR   1.1
93 AUG 22  114 39.16 37 29.51 118 52.44  5.91 30   .10  .3 1.1 MOR   2.8
93 AUG 22  301  9.25 38 49.27 122 46.56  2.34  8   .04  .3  .7 GEY   1.1

93 AUG 22  532 18.84 37 32.35 118 52.61  4.81 17   .11  .6 1.1 MOR   1.4
93 AUG 22  648  8.55 37 33.68 118 52.74  4.91 11   .04 1.0  .8 MOR   1.3
93 AUG 22  715 52.94 40 19.05 124 26.19  9.71 16 1 .04  .6  .3 MEN   2.1
93 AUG 22 1004 15.38 37 29.11 118 52.41  1.75 11   .04  .4 8.7 MOR - 1.3
93 AUG 22 1335 54.82 37  8.85 122 20.41  9.69 11 1 .11 1.3 1.4 ANN   1.2

93 AUG 22 1342 21.41 37 35.24 118 46.76  4.57 12   .10  .4 1.1 MOR   1.4
93 AUG 22 1351 33.45 40 29.07 121 29.04  4.97 11 3 .09  .7  .6 LAS   1.2
93 AUG 22 1352 30.75 40 28.63 121 28.95  4.01 23 3 .08  .3  .2 LAS   2.0
93 AUG 22 1414  5.75 38 47.17 122 44.92  0.25  8   .04  .3 1.2 GEY   1.1
93 AUG 22 1425 32.96 36 56.44 122 13.59  6.44 32 1 .11  .7 1.4 MON   2.1

93 AUG 22 1506 38.04 38 49.12 122 48.52  3.79 11   .04  .3  .7 GEY   1.4
93 AUG 22 1600 16.14 37 27.16 118 50.34  7.15 30 1 .10  .5 1.2 MOR   2.9
93 AUG 22 1601  8.64 36 58.14 121 27.48  5.51 55 2 .10  .2  .5 CYS   1.8
93 AUG 22 1618 44.18 38 51.70 122 51.84  1.76  9   .04  .3  .5 GEY   1.0
93 AUG 22 1627 16.77 37 29.19 118 50.65  1.92  7   .04 1.5 8.8 MOR - 1.0

93 AUG 22 1757  7.29 36 56.71 122 13.32  3.87 14 1 .07 1.0 1.8 MON   1.5
93 AUG 22 1835 14.72 36 58.04 121 27.48  4.20 17   .08  .3  .8 CYS   1.0
93 AUG 22 1849 51.11 38 47.65 122 45.98  1.49  9   .08  .3  .8 GEY   1.3
93 AUG 22 1900 38.29 37 34.61 118 50.44  6.66 29   .12  .4  .6 MOR   2.7
93 AUG 22 1903  3.77 37 34.48 118 50.24  7.11 17   .12  .5  .9 MOR   1.6

93 AUG 22 2005 16.28 37 34.46 118 50.28  7.31 18   .10  .5  .7 MOR   1.6
93 AUG 22 2022 21.62 37 30.56 118 52.12  0.42 14   .12  .610.4 MOR - 2.0
93 AUG 22 2119  4.31 37 32.91 118 52.68  5.45 14   .12  .5 1.0 MOR   1.5
93 AUG 22 2121  1.34 38 49.73 122 47.62  2.60  8   .02  .3  .7 GEY   1.0
93 AUG 22 2134 19.21 37 34.18 119  1.12  2.80 11   .08 1.1 3.0 SIL   1.8

93 AUG 22 2153 17.63 38 49.68 122 47.63  2.41  9   .04  .3  .7 GEY   1.2
93 AUG 22 2255 24.24 37 39.07 118 54.50  7.91  7   .02  .9 1.9 DOM   1.0
93 AUG 23   17 41.65 37 39.84 118 54.73  3.71 11   .09  .5  .7 DOM   1.2
93 AUG 23   40 29.29 37 29.80 118 52.10  1.76  7   .09 1.711.0 MOR - 1.2
93 AUG 23  116 26.33 35 57.89 120 31.00 12.04 10   .03  .9  .8 MID   1.4

93 AUG 23  155 23.38 37 29.57 118 52.17  4.89 22   .07  .3 1.1 MOR   1.9
93 AUG 23  253 10.87 37 31.78 118 52.55  1.27 12   .03  .6 7.4 MOR - 1.2
93 AUG 23  346 13.22 37 31.96 118 53.00  3.15 22   .08  .3 1.3 MOR   2.0
93 AUG 23  404 20.80 37 31.90 118 53.10  1.46 13   .08  .410.4 MOR - 1.5
93 AUG 23  442 53.97 37 17.41 119 26.80 33.30 18 4 .21 1.0 1.7 KAI   2.2

93 AUG 23  449 21.07 40 40.19 123 42.32 23.88 10 2 .10  .6 1.2 EUR   1.6
93 AUG 23  647 14.82 37 37.30 118 50.86  5.34 16   .11  .4  .7 SMO   1.4
93 AUG 23  713 54.40 37 32.48 118 52.61  5.68 11   .04  .7 1.2 MOR   1.0
93 AUG 23  726 55.66 40 21.98 124 25.89 18.96 13 1 .14 1.4  .4 MEN   1.6
93 AUG 23  839 44.26 37 20.25 121 42.20  6.73 19   .03  .3  .6 ALU   1.4

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

93 AUG 23  844  1.71 38 49.91 122 47.95  0.59 15   .11  .3  .8 GEY   1.7
93 AUG 23  854  5.46 37 30.98 118 52.51  0.05 17   .10  .5 5.0 MOR * 1.5
93 AUG 23 1049 30.88 37 31.89 118 52.82  1.68 16   .09  .4 8.4 MOR - 1.6
93 AUG 23 1057 17.85 37 32.94 118 49.67  5.84 14   .17  .8 1.3 MOR   1.2
93 AUG 23 1109  2.76 39 25.00 119 54.83  0.45 27 1 .16 1.3 2.9 WAK-  2.4

93 AUG 23 1112 41.33 37 32.60 118 49.47  4.23 11   .08  .6 1.4 MOR   1.1
93 AUG 23 1322 55.98 37 37.77 118 53.08  6.51 12   .10  .4  .7 SMO   1.1
93 AUG 23 1503 26.78 38 48.66 122 49.92  1.84 65   .14  .1  .4 GEY   3.5
93 AUG 23 1506 56.77 38 50.14 122 50.27  1.28 11   .09  .3  .9 GEY   1.8
93 AUG 23 1509 31.39 37 30.77 118 52.79  0.95 13   .03  .4 8.2 MOR - 1.3

93 AUG 23 1512 54.43 38 48.78 122 50.21  2.25  7   .03  .4  .8 GEY   1.3
93 AUG 23 1521 28.25 38 49.59 122 50.15  1.27 21   .15  .3 1.0 GEY   2.0
93 AUG 23 1644 58.10 38 49.94 122 48.31  1.38  8   .11  .5 1.0 GEY   1.2
93 AUG 23 1728 51.19 38 49.63 122 49.51  2.37  8   .08  .5  .9 GEY   1.4
93 AUG 23 1739 39.50 38 49.56 122 49.40  2.38 17   .07  .3  .7 GEY   1.9

93 AUG 23 1841 40.95 38 49.70 122 49.33  2.83  8   .03  .4  .8 GEY   1.3
93 AUG 23 1851 55.62 37 32.57 118 53.23  5.78 38 5 .12  .3  .7 MOR   2.0
93 AUG 23 1905 15.06 37 32.09 118 50.02  0.84  7   .01  .8  .3 MOR   1.1
93 AUG 23 1927 12.33 37 15.69 121 38.49  5.16  7   .02  .4  .7 SFL   1.0
93 AUG 23 2115 54.61 37 37.30 118 50.99  5.25 13   .12  .5  .8 SMO   1.4

93 AUG 23 2212  7.00 36 50.26 121 24.60  7.98 30   .11  .3  .7 HOL   1.4
93 AUG 24  100 34.65 38 48.63 122 50.29  1.55 13   .09  .4  .8 GEY   1.6
93 AUG 24  109 35.46 37 31.84 118 50.36  0.14 11   .11 1.0  .6 MOR   1.3
93 AUG 24  112 33.41 37 38.31 118 51.42  3.43 11   .15  .6 1.5 SMO   1.1
93 AUG 24  117 52.02 38 49.40 122 47.87  3.73  8   .03  .4  .8 GEY   1.4

93 AUG 24  122  7.52 37 37.61 118 51.15  4.98 35   .17  .4  .6 SMO   2.7
93 AUG 24  310 18.07 37 37.75 118 53.98  1.63  7   .03  .4  .3 SMO   1.5
93 AUG 24  439 20.90 37 37.77 118 54.06  1.62  7   .03  .5  .3 SMO   1.6
93 AUG 24  535 43.04 37 34.89 118 50.27  8.04 11   .10  .7 1.1 MOR   1.1
93 AUG 24  730 47.28 38 47.23 122 45.43  1.73  8   .03  .3  .7 GEY   1.3

93 AUG 24  804 59.93 37 38.71 118 53.29  1.33  8   .03  .4  .3 SMO   1.5
93 AUG 24  807 56.16 40 18.53 124 33.35 11.96  7   .05 2.9  .7 MEN   2.3
93 AUG 24  855 40.98 37 39.42 118 51.93  4.85  9   .04  .5 1.1 DOM   1.0
93 AUG 24  908  1.14 38 48.00 122 49.60  3.04 11   .04  .3  .8 GEY   1.7
93 AUG 24 1055  9.32 37 30.89 118 52.48  1.56 10   .05  .9 9.3 MOR - 1.1

93 AUG 24 1111  7.45 37 37.38 118 50.95  4.85 18   .11  .4  .6 SMO   1.7
93 AUG 24 1126 48.88 37 52.52 121 59.50  4.30  7   .06 2.2 1.4 CON   2.0
93 AUG 24 1132 58.54 37 38.45 118 52.72  8.37 12   .08  .6  .8 SMO   1.7
93 AUG 24 1241 37.64 38 45.11 122 43.58  1.80 15   .08  .3  .6 GEY   1.8
93 AUG 24 1258 54.85 37 30.75 118 52.73  1.01  8   .07 1.2 9.6 MOR - 1.1

93 AUG 24 1353 27.95 37 30.75 118 52.75  1.13 11   .04  .8 8.5 MOR - 1.3
93 AUG 24 1358 28.85 37 34.63 118 48.00 13.08 10   .04  .5 1.4 MOR   1.0
93 AUG 24 1401 18.92 37 38.74 118 53.03  1.90  8   .04  .3  .3 SMO   1.5
93 AUG 24 1443 48.80 36 43.14 121 22.01  2.93  7   .05  .4 1.1 STN   1.3
93 AUG 24 1551 34.85 37 34.66 118 47.82 12.16 13   .06  .4  .9 MOR   1.2

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ       DUR
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG

93 AUG 24 1632 40.31 37 38.47 118 51.86  6.98 11   .09  .4  .9 SMO   1.2
93 AUG 24 1700 46.97 38 47.17 122 44.99  1.53 26   .11  .2  .9 GEY   2.2
93 AUG 24 1742  0.65 38 51.21 122 48.13  2.00 18   .07  .2  .8 GEY   1.5
93 AUG 24 1804 37.48 35 35.05 119 53.20 15.52 24 1 .22 1.2  .8 BAK   2.2
93 AUG 24 1819 29.80 35 36.17 119 50.97 14.64 18 3 .19 1.0 1.3 BAK   1.9

93 AUG 24 1823 25.12 35 35.81 119 51.77 15.48 25 2 .21 1.0 1.1 BAK   1.9
93 AUG 24 1925 55.43 37 37.27 118 51.07  5.36 17   .10  .4  .5 SMO   1.8
93 AUG 24 1932  6.18 37 37.46 118 50.80  5.91 11   .13  .5  .9 SMO   1.1
93 AUG 24 2025 26.01 37 37.87 118 51.92  8.33 13   .11  .5  .8 SMO   1.5
93 AUG 24 2027 52.36 37 37.60 118 52.54  8.87 24   .11  .4  .5 SMO   2.0

93 AUG 24 2028 54.16 37 37.96 118 51.80  9.50 11   .06 1.2 1.2 SMO   1.4
93 AUG 24 2031  2.40 37 37.90 118 51.15  6.86  8   .15  .9 1.7 SMO   1.1
93 AUG 24 2031 15.56 37 38.45 118 51.57 10.39  8   .08 1.1 1.7 SMO   1.2
93 AUG 24 2104 42.55 37 37.86 118 51.81  7.08 11   .12  .4 1.0 SMO   1.2
93 AUG 24 2202 19.67 37 37.99 118 52.24  8.02  9   .03  .6  .7 SMO   1.2

93 AUG 24 2319  1.32 37 32.67 118 53.01  5.93 38 4 .12  .3  .7 MOR   2.6
93 AUG 24 2338 48.42 38 50.70 122 49.75  0.63 12   .16  .5 1.4 GEY   1.5
93 AUG 25  147 43.16 37 38.67 118 52.67  4.69 37 2 .12  .3  .4 SMO   2.3
93 AUG 25  217 37.24 38 47.68 122 44.73  1.34 14   .07  .3  .6 GEY   1.9
93 AUG 25  354  7.74 39 31.78 122 54.71  4.07 17 2 .10  .3  .6 BAR-  1.6

93 AUG 25  804 25.24 40 17.29 124 22.07 20.63 12 1 .07  .9  .4 MEN   1.7
93 AUG 25  938 50.11 37 32.25 118 52.52  6.22  8   .08 1.3 1.8 MOR   1.0
93 AUG 25  940 36.11 35 46.23 118  1.43  9.17 14 2 .08  .4 1.1 WWF   1.8
93 AUG 25 1058  0.56 36 56.55 121 26.41  2.50 40 1 .09  .2  .9 HOL   1.9
93 AUG 25 1147 15.78 37 30.28 118 52.69  4.26 22   .12  .4 1.3 MOR   2.0

93 AUG 25 1331 23.72 37 32.28 118 52.07  4.89  7   .06  .9 1.5 MOR   1.1
93 AUG 25 1341 27.84 37 38.50 118 51.18  4.13 12   .08  .3  .9 SMO   1.5
93 AUG 25 1552 22.85 37 39.74 118 51.37  5.89 17   .12  .4  .8 DOM   1.7
93 AUG 25 1555  8.37 37 34.57 118 50.33  7.29 18   .10  .4  .7 MOR   1.5
93 AUG 25 1557 44.08 37 39.49 118 51.81  6.98 24   .12  .4  .7 DOM   2.1

93 AUG 25 1647 52.13 37 27.29 118 40.89  0.00 12   .10  .7 8.5 WCS - 1.4
93 AUG 25 1653 55.49 35 42.97 120 16.21 11.48 10   .04  .4  .9 GOL   1.2
93 AUG 25 1800 12.43 37 38.44 118 57.99  5.48  8   .12  .8 1.6 SMO   1.0
93 AUG 25 1809 55.02 37 37.89 119  1.50  5.46 11   .03  .6  .9 MAM   1.1
93 AUG 25 1840 24.20 37 31.15 118 52.47  1.19  7   .04 1.6 8.7 MOR - 1.0

93 AUG 25 1841 39.16 37 29.45 118 50.61  8.68 23   .09  .3  .9 MOR   1.7
93 AUG 25 1902 30.87 37 39.85 118 55.33  8.48 10   .15 1.8 1.8 DOM   1.0
93 AUG 25 1948 46.20 37 31.52 118 52.77  1.63  7   .03 1.5 8.5 MOR - 1.0
93 AUG 25 2021 10.28 39 31.86 120 24.91 14.79 23   .09  .9 3.0 WAK   3.2
93 AUG 25 2040 21.91 38 46.32 122 54.37  4.41 11   .07  .4 1.4 GEY   1.4

93 AUG 25 2240 26.01 37 38.46 118 53.16  2.66 12   .14  .5  .8 SMO   1.5
93 AUG 26  127  4.17 37 32.72 118 51.03  6.54  9   .08 1.3 1.4 MOR * 1.5
93 AUG 26  148  8.45 37 32.26 118 51.43  2.87  7   .10 1.0 9.7 MOR - 1.2
93 AUG 26  315 51.66 38 46.08 122 43.73  1.02 11   .06  .3  .6 GEY   1.7
93 AUG 26  410 48.71 37 31.26 118 51.59  1.50  8   .20 1.618.5 MOR - 1.1

          
 TABLE 2.
Data from National Earthquake Information Center (NEIC)

UTC TIME    LAT     LONG    DEP GS MAGS  SD STA  REGION AND COMMENTS
HRMNSEC                         MB  Msz     USED
-------------------------------------------------------------------------------
AUG 14
012917.8  33.343N 132.466E  41D 5.1 4.3 1.0  59 SHIKOKU, JAPAN
021508.8* 12.654N 144.773E  33N 4.1     0.7  10 SOUTH OF MARIANA ISLANDS
035239.6? 37.66 N  70.95 E  33N 4.8     1.2  12 AFGHANISTAN-TAJIKISTAN BORD REG.
115730.7  36.970N 142.235E  33N 4.2     1.2  23 OFF EAST COAST OF HONSHU, JAPAN
143003.9  25.422N 101.373E  33N 4.8 4.7 1.1  39 YUNNAN, CHINA
223819.4? 13.22 N 143.84 E  33N 4.3     0.1   4 SOUTH OF MARIANA ISLANDS

AUG 15
020202.4*  6.668S 132.450E  10G 4.0     1.5   6 TANIMBAR ISLANDS REG., INDONESIA
030605.9*  5.233N  94.543E  33N 5.1     1.1  29 NORTHERN SUMATERA, INDONESIA
031021.9   0.923N  25.866W  15D 5.3 5.3 1.0  84 CENTRAL MID-ATLANTIC RIDGE
044124.3  43.646N 147.460E  33N 4.5     0.9  32 KURIL ISLANDS
jjj053902.9   7.658N 126.787E  65* 4.6     1.1  32 MINDANAO, PHILIPPINE ISLANDS
061856.3% 44.422N   7.199E  10G         0.5  10 NORTHERN ITALY. ML 2.4 (GEN).
091814.3* 41.975N 139.590E  33N 4.6     0.7  13 HOKKAIDO, JAPAN  REGION
120544.4? 27.24 S  69.16 W 114D 4.3     1.1  26 NORTHERN CHILE
125104.3& 62.970N 149.850W  86               51 CENTRAL ALASKA. <AEIC>.
145720.8*  6.784S 131.635E  33N         1.3   8 TANIMBAR ISLANDS REG., INDONESIA
175907.7& 62.330N 149.450W  57               86 CENTRAL ALASKA. <AEIC>. ML 3.6
214435.0  34.035N 135.136E  18  4.4     0.9  15 NEAR S. COAST OF WESTERN HONSHU
235226.2% 44.257N   8.246E   5G         0.4   7 NORTHERN ITALY. ML 2.3 (GEN).

AUG 16
032023.3% 47.321N  11.430E  10G         0.3   5 AUSTRIA. ML 1.5 (VIE).
060725.7  35.819N 115.744W   5G         0.8  13 CALIFORNIA-NEVADA BORDER ML 3.0
063624.2* 12.895N 145.309E  33N 4.2     1.3   6 SOUTH OF MARIANA ISLANDS
080712.3* 13.579N 143.944E  33N 4.3     0.6   6 SOUTH OF MARIANA ISLANDS
102747.3*  4.685S 152.610E  33N 5.0     0.8  17 NEW BRITAIN REGION, P.N.G.
123404.4* 45.966N  11.626E  10G         0.8  11 NORTHERN ITALY. ML 3.2 (VIE).
170442.4  15.187S 165.980E  33N 5.1 4.7 0.9  44 VANUATU ISLANDS

AUG 17
032515.6*  4.137N 125.985E  33N 5.0     1.2  12 TALAUD ISLANDS, INDONESIA
105628.2*  9.012S 118.728E  33N 4.7     0.9  11 SUMBAWA REGION, INDONESIA
145914.1  42.562N 139.322E  33N 4.7     0.8  29 HOKKAIDO, JAPAN  REGION
162604.4* 39.991N  20.656E  33N         1.3  21 GREECE-ALBANIA BORDER  ML 3.8
172213.5* 13.265N 145.276E  33N 4.6     1.3  26 MARIANA ISLANDS. Felt (IV) at
                                                Agana and Yigo, Guam.
203513.1*  9.467S 158.066E  33N 4.6 4.3 0.7  10 SOLOMON ISLANDS
234005.9* 30.628S  71.948W  33N 4.8     1.2  32 NEAR COAST OF CENTRAL CHILE

AUG 18
013751.5* 12.996N 145.660E  33N 4.9     1.6  31 SOUTH OF MARIANA ISLANDS
041823.1  43.149N 139.353E  33N 4.8     1.2  41 EASTERN SEA OF JAPAN
044035.3* 24.702N 121.676E  33N 4.6     1.0  14 TAIWAN
050511.2& 67.510N 145.900W  22  4.1          60 NORTHERN ALASKA. <AEIC>. ML 4.3
120915.3* 34.554N  26.260E  10G 4.6     1.1  32 CRETE. Felt in the Iraklion and
                                                Lasithi Districts.
121951.0  44.423N 149.099E  33N 4.7     0.8  41 KURIL ISLANDS
191435.8* 12.910N 145.046E  33N 4.6     0.7  10 SOUTH OF MARIANA ISLANDS
213432.6* 42.943N 139.612E  33N 4.6     1.0  10 HOKKAIDO, JAPAN  REGION

AUG 19
033618.5? 15.92 S 174.62 W 150D 4.3     0.9  26 TONGA ISLANDS
043108.1   1.912N 127.494E 125* 5.4     1.0  40 HALMAHERA, INDONESIA
062214.7  35.835N 115.812W   5G         0.6  17 CALIFORNIA-NEVADA BORDER ML 3.5
064826.1  13.276N 124.133E  64D 5.3     1.0  39 LUZON, PHILIPPINE ISLANDS
073344.5  34.092N 116.870W   5G         0.8   8 SOUTHERN CALIFORNIA. ML 2.7
080323.2  13.251N 145.452E  60G 5.5     1.2 108 MARIANA ISLANDS. Mo=5.2*10**17
        Nm (PPT). Felt (III) at Agana, Guam.
081153.8  51.606N 171.203W  33N 5.4 5.3 1.2 101 FOX ISLANDS, ALEUTIAN ISLA
091336.5  13.285N 144.045E  33N 4.3     0.8  12 MARIANA ISLANDS
091437.7  37.572N 118.848W   5G         0.7  79 CALIFORNIA-NEVADA BORDER ML 3.5
103935.5* 13.523N 143.571E  33N 4.2     0.6   6 SOUTH OF MARIANA ISLANDS
133551.6   7.910S 146.470E  33N 5.3     0.7  27 EASTERN NEW GUINEA REG., P.N.G.
140129.4& 60.340N 152.510W  92               46 SOUTHERN ALASKA. <AEIC>.
152142.7   7.168N 126.808E  70G 5.4     1.1  68 MINDANAO, PHILIPPINE ISLANDS
153307.2  18.423N  70.370W  33N 4.9 5.4 1.2 109 DOMINICAN REPUBLIC REGION. Felt
        strongly at Santo Domingo. Felt throughout the Dominican Republic.
162329.2  28.890N 141.815E  33N 4.9     1.0  30 BONIN ISLANDS REGION
171131.5  36.257N 120.402W  15G         0.8  34 CENTRAL CALIFORNIA. ML 2.9 (GS).
183034.1* 53.091N 171.484W 118* 4.3     0.8  12 FOX ISLANDS, ALEUTIAN ISLANDS
194313.1  44.803N 110.941W   5G         0.7  42 YELLOWSTONE REGION, WYOMING. ML
                                                3.6 (GS), 3.7 (BUT).
215205.7   7.150N 126.796E  33N 5.2 4.4 1.2  50 MINDANAO, PHILIPPINE ISLANDS
220133.4* 42.758N 145.890E  33N 4.7     1.2  18 HOKKAIDO, JAPAN  REGION
221149.5* 13.431N 143.952E  33N 4.7     1.4  12 SOUTH OF MARIANA ISLANDS

AUG 20
021108.7? 19.01 N 106.15 W  33N 4.4     1.3  28 OFF COAST OF JALISCO, MEXICO
034750.0? 18.87 N 106.15 W  33N 4.2     1.3  24 OFF COAST OF JALISCO, MEXICO
050655.2   5.946S 142.450E  33N 5.9 6.3 0.9  45 NEW GUINEA, PAPUA NEW GUINEA. Mw
        6.4 (GS), 6.2 (HRV). Five people injured and damage in the Tari area.
071553.8* 51.296N 179.262E  33N 4.7     0.9  15 RAT ISLANDS, ALEUTIAN ISLANDS
112357.8* 15.568S 173.251W  33N 5.1     1.0  41 TONGA ISLANDS
115203.9  21.805N 142.934E 281D 5.4     0.7  73 MARIANA ISLANDS REGION
130608.5* 18.132N 102.632W  33N 4.2     1.1  37 MICHOACAN, MEXICO
165726.8* 50.610N 156.246E  46D 4.9     1.0  30 KURIL ISLANDS
185713.4  25.748S 175.234W  33N 5.6 5.1 0.7  70 SOUTH OF TONGA ISLANDS
211248.4* 12.679N 145.051E  33N 4.6     0.4   9 SOUTH OF MARIANA ISLANDS

AUG 21
014637.3  34.008N 116.359W  10G 4.4     1.0  60 SOUTHERN CALIFORNIA. ML 4.7
        (GS). Felt in San Bernardino and Riverside Counties. Also felt in parts
        of Orange County.
094236.6  21.026S 178.159W 434D 5.7     0.8  82 FIJI ISLANDS REGION
200338.1  67.421N 146.720W  10G 4.7 4.1 1.3  32 NORTHERN ALASKA

AUG 22
100157.5* 13.425N  90.652W  33N 5.5 4.7 1.1  77 NEAR COAST OF GUATEMALA
180831.8  36.486N 117.614W   5G         0.7  36 CALIFORNIA-NEVADA BORDER ML 3.2

AUG 23
131512.4* 41.770N 139.320E  33N 4.8     0.6  31 HOKKAIDO, JAPAN  REGION
150326.7  38.816N 122.767W   5G         0.8  43 NORTHERN CALIFORNIA. ML 3.5

Notes: Origin time in the list is in GMT, in the text and on maps
       it is in local time.
       N RD: is the number of readings used to locate the event.
       N S: is the number of S waves in N RD.
       RMS SEC: is the root mean squared residual misfit for the
                location is seconds, the lower the better, over 0.3
                to 0.5 seconds is getting bad, but this is machine,
                not hand timed, data.
       ERH: is the estimated horizontal error in kilometers.
       ERZ: is the estimated vertical error in kilometers.
       N FM: is the number of readings used to compute the magnitude.
       REMKS: obtuse region codes that denote the velocity model
              used to locate the event.
       DUR MAG: is the magnitude as determined from the duration of
                the seismograms, not the amplitude.  Sort of like
                going to echo canyon and measuring how loud your
                yell is by counting echos.
       FIG: denotes the figure/event number in the maps posted separately.