Hail, Sweetwater
- When
- July 6, 2:29 PM MST
- Where
- Sweetwater County, 7 mi W of Rock Spgs
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.583, -109.350
Hail in Wyoming, July 6, 2001
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 Jul 6, 1:45 PM MST, 44 minutes earlier.
Area forecast discussion, Jul 6, 1:45 PM MST, 44 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 245 PM MDT FRI JUL 6 2001 NOT MUCH HAS CHANGED AS MONSOON CONTINUES TO SPREAD NORTH THROUGH WYOMING WITH HIGH DEW POINTS AND SCATTERED CONVECTION INCREASING THROUGH EARLY AFTERNOON. MONSOON WELL CONNECTED TO ITCZ IN E PAC AND ALSO BEING SUPPLIED FROM GULF OF MEXICO WITH SE LOW LEVEL FLOW ACROSS TEXAS AND NEW MEXICO MERGING WITH SOUTH SOUTHWEST FLOW FROM BAJA INTO ARIZONA AND S CALIFORNIA. CONVECTION SHOULD BECOME MORE WIDESPREAD ACROSS WYOMING AGAIN THROUGH THE EVENING WITH SOME SHOWERS AND THUNDERSTORMS CONTINUING THOUGH THE NIGHT WITH A MINIMUM OF ACTIVITY FROM SUNRISE TO 10 AM SATURDAY. CANNOT LIMIT THE THREAT TO THE AFTERNOON AND EVENING THOUGH THAT IS WHEN THE STRONGEST THUNDERSTORMS SHOULD OCCUR. WITH WARM TEMPERATURES ALOFT...POTENTIAL FOR HAIL LESS. RAIN FROM MORNING SHOWER AT OFFICE WAS QUITE WARM. BEST HAIL THREAT WILL REMAIN IN JOHNSON AND NATRONA COUNTIES. WITH WILDFIRES AROUND W AND CENTRAL WYOMING...ESPECIALLY IN WESTERN MOUNTAINS...RAIN SHOULD BE WELCOME. MODELS INDICATE THREAT OF SHOWERS AND THUNDERSTORMS WITH MONSOON CONTINUES THROUGH EXTENDED WITH LITTLE DAY TODAY CHANGE zIN TEMPERATURE. .RIW...NONE C.BAKER
In the hours before
Special weather statement, Jul 6, 8:35 AM MST, 5 hours 54 minutes before
WYZ015-028-070030- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 935 AM MDT FRI JUL 6 2001 THE SEVERE WEATHER POTENTIAL IN CENTRAL WYOMING WILL BE SLIGHT THIS AFTERNOON AND EVENING. SPOTTER ACTIVATION MAY BE NECESSARY LATER TODAY. DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER JOHNSON AND NATRONA COUNTIES THIS AFTERNOON AND EVENING. LARGE HAIL WILL BE THE BIGGEST THREAT. LOCALLY VERY HEAVY RAI N IS ALSO EXPECTED. THIS OUTLOOK IS FOR THE FOLLOWING COUNTIES IN WESTERN AND CENTRAL WYOMING. JOHNSON... NATRONA... C. BAKER WCJIN-WYNE
Special weather statement, Jul 6, 2:00 PM MST, 29 minutes before
WYZ015-028-062130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 300 PM MDT FRI JUL 6 2001 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR JOHNSON AND NATRONA COUNTIES UNTIL 9 PM MDT... AT 300 PM MDT...THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR JOHNSON AND NATRONA COUNTIES UNTIL 9 PM MDT TONIGHT. THUNDERSTORMS WILL HAVE THE POTENTIAL TO PRODUCE HAIL AROUND AN INCH ALONG WITH DAMAGING WIND GUSTS AROUND 60 MPH. REMEMBER...A WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE WEATHER. PEOPLE IN JOHNSON AND NATRONA COUNTIES SHOULD REMAIN ALERT FOR THUNDERSTORMS THIS AFTERNOON AND EVENING. IF YOU EXPERIENCE SEVERE WEATHER... REPORT IT TO THE LOCAL LAW ENFORECMENT AGENCY. C. BAKER WCJIN-WYNE
The radar
The Riverton/Lander radar (KRIW), 180 km away, was scanning. The volume nearest the first event began at 21:30 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
- Tornadoes in South Carolina, July 6, 2001
- Heat in Missouri, July 6 to 8, 2001
- Lightning Strike in California, July 6, 2001
- Flash Flood in California, July 6, 2001
- Damaging Wind in Louisiana, July 6, 2001
- Damaging Wind in California, July 6, 2001
- Damaging Wind in Florida, July 6, 2001
- Lightning Strike in California, July 6, 2001
- Flood in California, July 6, 2001
- Flood in California, July 6, 2001
- Damaging Wind in Louisiana, July 6, 2001
- Hail and Damaging Wind in Mississippi, July 6, 2001
More
Every storm in Wyoming in 2001Every state in 2001This day in weather historyWarnings in Wyoming, July 2001
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: 5259675.