Observing and Recording Procedures A7-12 3.1 Tornado, Waterspout, or Funnel Cloud A7-12 3.2 Thunderstorm A7-12 3.2.1 Beginning of a Thunderstorm A7-12 3.2.2 Ending of a Thunderstorm A7-13 3.2.3 Intensity of Thunderstorms A7-13 3.2.4 Reporting a Thunderstorm A7-13 3.2.5 (WS, FAA) Time of Beginning and/or Ending of a Thunderstorm A7-13 3.3 Reporting Hail A7-13 3.3.1 (WS, FAA) Time of Beginning and/or Ending of Hail A7-14 3.3.2 Intensity of Hail A7-14 3.4 Reporting Freezing Precipitation A7-14 3.4.1 (WS, FAA) Time of Beginning and/or Ending of Freezing Precipitation A7-14 3.4.2 Intensity of Freezing Precipitation A7-14 3.4.2.1 Freezing Drizzle A7-14 3.4.2.2 Freezing Rain A7-14 3.5 Reporting Ice Pellets A7-14 3.5.1 (WS, FAA) Time of Beginning and/or Ending of Ice Pellets A7-14 3.5.2 Intensity of Ice Pellets A7-14 3.6 Reporting Precipitation A7-15 3.6.1 Observing Precipitation A7-15 3.6.2 (WS, FAA) Time of Beginning and/or Ending of Precipitation A7-15 3.6.3 Determining and Reporting Type of Precipitation A7-15 3.6.4 Determining the Character of Precipitation A7-15 3.6.5 Determining the Intensity of Precipitation A7-15 3.6.5.1 Intensity of Rain A7-15 3.6.5.2 Intensity of Drizzle, Freezing Drizzle, Snow, Snow Pellets, and Snow Grains A7-16 3.6.6 Reporting Intensity A7-16 ATMOSPHERIC PHENOMENA A7-3 Page 3.7 Determining the Amount of Precipitation A7-16 3.7.1 Priority of Gauges A7-16 3.7.2 Stick Measurement of Liquid Precipitation A7-16 3.7.3 Stick Measurement of Solid Precipitation A7-16 3.7.4 (WS, FAA) Determining Water Equivalent of Solid Precipitation by Weighing A7-17 3.7.5 Core Sampling and Depth Measurements A7-17 3.7.6 Water Equivalent of Core Samples A7-17 3.7.7 Estimation of Water Equivalent of Snow A7-18 3.7.8 (WS, FAA) Determination of Three-hour Accumulation of Precipitation A7-18 3.8 Depth Measurement of Solid Forms A7-18 3.8.1 Measurement of Total Depth A7-18 3.8.1.1 Undrifted Snow A7-18 3.8.1.2 DriQ: Salt dissolving in water is a physical change.
(Thunderstorm A7-13 3.3 Reporting Hail A7-13 3.3.1 (WS, FAA) Time of Beginning and/or Ending of Hail A7-14 3.3.2 Intensity of Hail A7-14 3.4; Reporting; Freezing Precipitation A7-14 3.4.1 (WS, FAA) Time of Beginning and/or Ending of Freezing Precipitation A7-14 3.4.2 Intensity of Freezing Precipitation A7-14) (Precipitation A7-14; Freezing; Drizzle A7-14 3.4.2.2 Freezing Rain A7-14 3.5 Reporting Ice Pellets A7-14 3.5.1 (WS, FAA) Time of Beginning and/or Ending of Ice Pellets A7-14 3.5.2 Intensity of Ice Pellets A7-14 3.6 Reporting) Context(Precipitation A7-14 Freezing,List([604, 640))):(Drizzle A7-14; Reporting; ) (Salt dissolving in water; is; a physical change) (3.4.2.2 Freezing Rain A7-14 3.5 Reporting Ice Pellets A7-14 3.5.1 (WS, FAA) Time of Beginning and/or Ending of Ice Pellets A7-14 3.5.2 Intensity of Ice Pellets A7-14 3.6 Reporting Precipitation A7-15 3.6.1 Observing Precipitation A7-15 3.6.2 (WS, FAA) Time of Beginning; Ending; of Precipitation A7-15) (Reporting Intensity A7-16 ATMOSPHERIC PHENOMENA A7-3 Page 3.7; Determining; the Amount of Precipitation A7-16 3.7.1 Priority of Gauges A7-16 3.7.2 Stick Measurement of Liquid Precipitation A7-16 3.7.3 Stick Measurement of) (Solid Precipitation A7-16 3.7.4; Determining; Water Equivalent of Solid Precipitation) (a Thunderstorm A7-12 3.2.2; Ending; of) (Water Equivalent of Solid Precipitation; by Weighing; A7-17) (3.6.3; Reporting; Type of Precipitation A7-15) (Salt; dissolving; L:in water) (3.6.3; Determining; )
Precipitation A7-14 Freezing,List([604, 640))
Thunderstorm A7-13 3.3 Reporting Hail A7-13 3.3.1 (WS, FAA) Time of Beginning and/or Ending of Hail A7-14 3.3.2 Intensity of Hail A7-14 3.4 Precipitation A7-14 Drizzle A7-14 Salt dissolving in water 3.4.2.2 Freezing Rain A7-14 3.5 Reporting Ice Pellets A7-14 3.5.1 (WS, FAA) Time of Beginning and/or Ending of Ice Pellets A7-14 3.5.2 Intensity of Ice Pellets A7-14 3.6 Reporting Precipitation A7-15 3.6.1 Observing Precipitation A7-15 3.6.2 (WS, FAA) Time of Beginning Reporting Intensity A7-16 ATMOSPHERIC PHENOMENA A7-3 Page 3.7 Solid Precipitation A7-16 3.7.4 a Thunderstorm A7-12 3.2.2 Water Equivalent of Solid Precipitation 3.6.3 Salt 3.6.3
Reporting Freezing Reporting is Ending Determining Determining Ending by Weighing Reporting dissolving Determining
Freezing Precipitation A7-14 3.4.1 (WS, FAA) Time of Beginning and/or Ending of Freezing Precipitation A7-14 3.4.2 Intensity of Freezing Precipitation A7-14
Drizzle A7-14 3.4.2.2 Freezing Rain A7-14 3.5 Reporting Ice Pellets A7-14 3.5.1 (WS, FAA) Time of Beginning and/or Ending of Ice Pellets A7-14 3.5.2 Intensity of Ice Pellets A7-14 3.6 Reporting
a physical change
of Precipitation A7-15
the Amount of Precipitation A7-16 3.7.1 Priority of Gauges A7-16 3.7.2 Stick Measurement of Liquid Precipitation A7-16 3.7.3 Stick Measurement of
Water Equivalent of Solid Precipitation
of
A7-17
Type of Precipitation A7-15
L:in water