Thunderstorm Wind, Sweetwater
- When
- June 12, 1:40 PM MST
- Where
- Sweetwater County, 15 mi SE of Rock Spgs
- Measured
- 52 kt (60 mph)
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.433, -109.017
Damaging Wind in Wyoming, June 12, 2001
1 thunderstorm wind, 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 Jun 12, 1:50 AM MST, 11 hours 50 minutes earlier.
Area forecast discussion, Jun 12, 1:50 AM MST, 11 hours 50 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 250 AM MDT TUE JUN 12 2001 WATER VAPOR LOOP SHOWS POWERFUL CYCLONIC CIRCULATION OVER WASHINGTON WITH 140 KNOT JET DIGGING ON BACKSIDE. LOW INITIALIZED OVER QUILLAYUTE AT 00Z WITH H5 COLD POOL AT -31C. SHORTWAVE OUT IN FRONT OF LOW FROM LWT INTO NW WYOMING AT 08Z WITH SOME SHOWERS AND A FEW LIGHTNING STRIKES ACROSS NW WYOMIMG. WEAK COLD FRONT ACROSS EASTERN IDAHO WITH SHORTWAVE BUT MAIN COLD POOL STILL BACK OVER WASHINGTON. MAIN FORECAST FOCUS FOR SHORT TERM WILL BE ON CONVECTIVE POTENTIAL TODAY AND POST TROFPA COLDER TEMPERATURES WITH RAIN AND SNOW LATER TONIGHT AND WEDNESDAY. PMDHMD FOLKS LIKE AVIATION...BUT FURTHER SOUTH TRACK OF ETA LOOKS BETTER WITH DIGGING JET PROGGED TO ROUND TROUGH AXIS THROUGH UTAH/COLORADO WEDNESDAY. BIG PICTURE FOR TODAY WILL BE INITIAL SHOWER ACTIVITY LIFTING INTO MONTANA THIS MORNING WITH INITIAL SHORTWAVE AS FAR WEST GETS CAUGHT IN BRIEF SLOT OF NVA. SHOWERS AND THUNDERSTORMS SHOULD THEN INCREASE OVER WEST THIS AFTERNOON AS LOW DIVES ACROSS IDAHO WITH MAX PVA INTO CENTRAL AND EASTERN IDAHO AT 18Z AND INTO WESTERN WYOMING 00Z. AT THE SURFACE...PRESSURES CONTINUE TO FALL ACROSS EAST OF DIVIDE TODAY WITH EVENTUAL CYCLOGENESIS OVER DEN BY 00Z. TROUGH AXIS PROGGED TO EXTEND NW FROM LOW ACROSS NORTHERN WYOMING WITH HIGHER DEWPOINTS AND CONVERGENGE ALONG AND NORTH OF AXIS. SO BEST CHANCE OF THUNDERSTORMS WILL BE NORTHERN ZONES WITH LOWER SCT POPS SOUTH AND CENTRAL. MID-LEVEL TROUGH PASSES THROUGH CENTRAL AND EAST BETWEEN 06Z AND 12Z AND SHOULD SEE BETTER THUNDERSTORM COVERAGE CENTRAL ZONES THIS EVENING AHEAD OF UPPER TROUGH AXIS. LATER TONIGHT AND WEDNESDAY...WIDESPREAD PRECIPITATION WILL DEVELOP ALONG AND NORTH OF SURFACE TROUGH AXIS THAT WILL DRAPE ACROSS WY/MT BORDER LATE TONIGHT AND SINK SOUTH ACROSS CENTRAL ZONES WEDNESDAY AS H7 LOW DEEPENS NEAR SHR. FORECAST SOUNDINGS SHOW FREEZING LEVELS DROPPING TO VALLEY FLOORS ACROSS NORTH WITH H7 TEMPERATURES AROUND -6C. SO RAIN SHOULD CHANGE TO SNOW ACROSS NORTH AFTER MIDNIGHT TONIGHT WITH SNOW OR RAIN AND SNOW MIX SPREADING INTO CENTRAL WEDNESDAY. LOW LIFTS NORTHEAST INTO NORTH DAKOTA WEDNESDAY NIGHT WITH FLAT RIDGE AND WARM AIR ADVECTION BUILDING INTO WESTERN MONTANA AND NW WYOMING. DRY AND WARMER EXTENDED ON TRACK WITH DRY WESTERLY FLOW PREVAILING WITH SOME BACKING BY SATURDAY AS NEXT TROUGH DIGS OFF NW COAST. WILL REISSUE SPS FOR CHANGING WEATHER. .RIW...NONE. AEM
The radar
The Riverton/Lander radar (KRIW), 187 km away, was scanning. The volume nearest the first event began at 20:39 UTC.
Event by event
1 thunderstorm wind. Local standard time, as filed.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornado and Flash Flooding in Iowa, June 12, 2001
- Tornadoes and Hail in South Dakota, June 12, 2001
- Flooding in Iowa, June 12 to 23, 2001
- Tornadoes and Hail in Iowa, June 12, 2001
- Flash Flood in South Dakota, June 12 to 13, 2001
- Flash Flood and Hail in Iowa, June 12 to 13, 2001
- Hail in Minnesota, June 12, 2001
- Damaging Winds and High Wind in Utah, June 12, 2001
- Hail in Iowa, June 12, 2001
- Damaging Winds in Indiana, June 12, 2001
- Damaging Winds and Lightning Strike in Michigan, June 12, 2001
- Flash Flooding and Flooding in Georgia, June 12 to 13, 2001
More
Every storm in Wyoming in 2001Every state in 2001This day in weather historyWarnings in Wyoming, June 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: 5251630.