Thunderstorm Wind, Weston
- When
- June 30, 8:19 PM MST to 8:30 PM MST
- Where
- Weston County, 19 mi SW of Upton
- Measured
- 61 kt (70 mph) measured gust
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.900, -104.900
Damaging Wind in Wyoming, June 30, 2003
High based thunderstorms developed over the Big Horn Mountains and moved across northeastern Wyoming. These storms produced strong winds as they moved across Weston County.
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 happened
The episode as NWS UNR wrote it up.
High based thunderstorms developed over the Big Horn Mountains and moved across northeastern Wyoming. These storms produced strong winds as they moved across Weston County. Several spotters from southwest of Upton to northeast of Upton reported 60 to 70 mph wind gusts.
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 Rapid City, SD wrote its last area forecast discussion before the first event at Jun 30, 7:25 PM MST, 54 minutes earlier.
Area forecast discussion, Jun 30, 7:25 PM MST, 54 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 825 PM MDT MON JUN 30 2003 UPDATED ZONES TO BETTER REFLECT TSTMS IN S-CENT SD AND IN NE WY. OTHERWISE...MADE NO CHGS. .UNR...NONE.
Hazardous weather outlook, Jun 30, 5:45 AM MST, 14 hours 34 minutes before
SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-011245- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 645 AM MDT MON JUN 30 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT A WEAK UPPER LEVEL DISTURBANCE WILL MOVE ACROSS THE REGION LATE THIS MORNING AND AFTERNOON. AN ISOLATED THUNDERSTORM OR TWO MAY DEVELOP OVER THE BLACK HILLS...BUT SEVERE THUNDERSTORMS ARE NOT EXPECTED. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THERE WILL BE A CHANCE FOR THUNDERSTORMS ACROSS NORTHWEST SOUTH DAKOTA WEDNESDAY NIGHT AS A COLD FRONT CLIPS THE REGION. A MORE WIDESPREAD CHANCE FOR THUNDERSTORMS IS EXPECTED ON INDEPENDENCE DAY AND SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.
In the hours before
Local storm report, Jun 30, 5:56 PM MST, 2 hours 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
656 PM MDT MON JUN 30 2003
TIME(MDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0650 PM 4 SE NORRIS SD .75 INCH HAIL
06/30/03 MELLETTE REPORTED BY STORM
SPOTTER 645 PM
THROUGH 650 PM.Local storm report, Jun 30, 6:41 PM MST, 1 hour 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
741 PM MDT MON JUN 30 2003
TIME(MDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0708 PM 1 W NORRIS SD 1 INCH HAIL
06/30/03 MELLETTE REPORTED BY PUBLIC.
0715 PM 6 SE LONGVALLEY SD 2.75 INCH HAIL
06/30/03 JACKSON REPORTED BY PUBLIC
FROM 715 PM MDT THROUGH
725 PM MDT.Local storm report, Jun 30, 6:56 PM MST, 1 hour 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
756 PM MDT MON JUN 30 2003
TIME(MDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0740 PM 7 NW PARMELEE SD 1 INCH HAIL
06/30/03 TODD REPORTED BY PUBLIC.Local storm report, Jun 30, 6:57 PM MST, 1 hour 22 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE RAPID CITY SD
757 PM MDT MON JUN 30 2003
TIME(MDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0610 PM 15 NE LONGVALLEY SD 1.75 INCH HAIL
06/30/03 JACKSON REPORTED BY STORM
SPOTTER. LASTED FROM
605 PM MDT THROUGH 610
PM MDT.Local storm report, Jun 30, 6:59 PM MST, 1 hour 20 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE RAPID CITY SD
759 PM MDT MON JUN 30 2003
TIME(MDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0625 PM 12 NE LONGVALLEY SD 1.75 INCH HAIL
06/30/03 JACKSON LASTED FROM 625 PM MDT
THROUGH 630 PM MDT.
REPORTED BY STORM
SPOTTER.Local storm report, Jun 30, 7:14 PM MST, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
814 PM MDT MON JUN 30 2003
TIME(MDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0730 PM 13 NE VETAL SD 1.75 INCH HAIL
06/30/03 BENNETT REPORTED BY PUBLIC.
LASTED FROM 730 PM MDT
THROUGH 745 PM MDT.
0755 PM 13 NE VETAL SD .75 INCH HAIL
06/30/03 BENNETT REPORTED BY PUBLIC.The radar
The national radar mosaic for the moment the first event began.
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
- Tornadoes and Tropical Storm in Louisiana, June 30, 2003
- Heat in Virginia, June 30, 2003
- Tornado and Tropical Storm in Mississippi, June 30, 2003
- Tornado in Georgia, June 30, 2003
- Wildfire in California, June 30, 2003
- Lightning Strike in New York, June 30, 2003
- Flash Flooding and Hail in Georgia, June 30, 2003
- Hail in Nebraska, June 30, 2003
- Flash Flood and Hail in Maryland, June 30, 2003
- Damaging Wind in Florida, June 30, 2003
- Damaging Winds in Massachusetts, June 30, 2003
- Hail in South Dakota, June 30, 2003
More
Every storm in Wyoming in 2003Every state in 2003This day in weather historyWarnings in Wyoming, June 2003
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: 5364840.