Hail, Big Horn
- When
- August 21, 3:05 PM MST
- Where
- Big Horn County, 1 mi E of Emblem
- Measured
- 1.75 in hail
- Reported by
- GENERAL PUBLIC
- Coordinates
- 44.500, -108.367
Hail in Wyoming, August 21, 2002
1 hail, as filed by the National Weather Service.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Riverton, WY wrote its last area forecast discussion before the first event at Aug 21, 12:59 AM MST, 14 hours 6 minutes earlier.
Area forecast discussion, Aug 21, 12:59 AM MST, 14 hours 6 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 159 AM MDT WED AUG 21 2002 SATELLITE IS SHOWING UPPER CUT OFF LOW CURRENTLY SPINNING OVER THE PACIFIC NORTHWEST. ALSO MOISTURE CONTINUES TO FLOW INTO THE AREA FROM THE SOUTH. MODELS IN GENERAL AGREEMENT SHOWING DIVERGENCE AT 300 MB AND 700 MB CONVERGENCE. IN ADDITION...RESIDUAL BOUNDARIES LEFT OVER FROM CURRENT CONVECTION WILL ALLOW FOR SCATTERED T-STORMS TODAY THROUGH TONIGHT. 700 MB WIND FIELD SHOWS SOUTHWEST WINDS OVER SOUTHWEST WY WITH NORTHEAST WINDS OVER SHERIDAN AND JOHNSON COUNTIES...THUS FORMING SOME KIND OF BOUNDARY EXTENDING FROM TETON COUNTY DOWN ALONG THE WIND RIVER MOUNTAINS. EXPECT TO SEE CONVECTION TO FIRE ALONG THIS BOUNDARY AND MOVE NORTHEAST. MODELS ALSO INDICATE THE FORMATION OF A MCS OVER NORTHEAST WY TONIGHT. CURRENT FORECAST HAS 40 POPS IN MOST PLACES TODAY...THIS LOOKS TO BE GOOD AND WILL NOT CHANGE. WILL CONTINUE THE CHANCE OF MAINLY LATE DAY SHOWERS/T-STORMS THU AND FRI...BUT WITH A LESSER CHANCE IN THE SOUTH WHERE LESS MOISTURE AND INSTABILITY. IN THE EXTENDED...WILL ADD CHANCE POPS TO SATURDAY AND SUNDAY... ESPECIALLY IN THE NORTH...AS THE MODELS NOW SHOW A WETTER SOLUTION. CHANCE POPS MONDAY AND TUESDAY LOOK GOOD. .RIW...NONE. MLC
The radar
The Billings radar (KBLX), 152 km away, was scanning. The volume nearest the first event began at 22:04 UTC.
Event by event
1 hail. Local standard time, as filed.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornado and Flooding in Wisconsin, August 21 to 22, 2002
- Rip Current in Florida, August 21, 2002
- Lightning Strike in Florida, August 21, 2002
- Hail and Damaging Winds in Nebraska, August 21, 2002
- Flash Flooding in Wisconsin, August 21, 2002
- Flash Flood in South Dakota, August 21, 2002
- Lightning Strike in Arkansas, August 21, 2002
- Flash Flooding and Flooding in Texas, August 21, 2002
- Tornadoes and Damaging Winds in Iowa, August 21, 2002
- Marine Thunderstorm Winds in Lake Michigan, August 21, 2002
- Damaging Wind in Michigan, August 21, 2002
- Lightning Strike in Florida, August 21, 2002
More
Every storm in Wyoming in 2002Every state in 2002This day in weather historyWarnings in Wyoming, August 2002
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5314230.