Hail, Campbell
- When
- June 12, 12:40 PM MST
- Where
- Campbell County, 10 mi S of Gillette
- Measured
- 1.75 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 44.133, -105.483
Hail in Wyoming, June 12, 2001
Several severe and tornadic thunderstorm developed and moved across northeastern Wyoming. Most storms produced brief tornados, however other thunderstorms did manage to produce large hail.
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
- 9
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.
Several severe and tornadic thunderstorm developed and moved across northeastern Wyoming. Most storms produced brief tornados, however other thunderstorms did manage to produce large hail. Some of the tornadic storms produced large hail along with the tornado, and even continued to produce large hail after the tornados had dissipated.
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 12, 8:55 AM MST, 3 hours 45 minutes earlier.
Area forecast discussion, Jun 12, 8:55 AM MST, 3 hours 45 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 955 AM MDT TUE JUN 12 2001 LATEST WV IMAGERY CLEARLY SHOWS UPPER LEVEL LOW INLAND OVER PAC NW...WITH STRONG JET MAX DIVING SE INTO GT BASIN. MOIST SW FLOW ALOFT WITH EMBEDDED SHORT WAVES WILL MOVE NE ACRS CWA TODAY. FIRST SHORT WAVE ALREADY TRIGGERING CONVECTION IN FAR SERN ZONES. A SECOND AND EVEN STRONGER SHORTWAVE EXPECTED TO TRACK ACROSS AREA LATER TODAY...HELPING TO ERODE STRONG CAPPING CURRENTLY IN PLACE AROUND 700 MB. AT THE SURFACE...STRONG SLY FLOW INVOF 700 MB EAST OF DEVELOPING SFC LOW OVER ERN WY/CO WILL ADVECT ACROSS REGION TODAY...OVERRUNNING WARM FRONT WHICH IS EXPECTED TO REMAIN SOUTH AND EAST OF CWA. CONVECTIVE PARAMETERS PLACE GREATEST THREAT FOR SEVERE WEATHER ACROSS SOUTHERN PORTIONS OF CWA...WHERE SHEAR PROFILES ARE STRONGEST AND CAPES IN EXCESS OF 3000 J/KG WILL DEVELOP. SRH OF 300 TO 400 WOULD SUGGEST POSSIBLE TORNADIC ACTIVITY. BASED ON STRONG CAPPING CURRENTLY IN PLACE...MOST CONVECTIVE DEVELOPMENT WILL BE DELAYED UNTIL LATE THIS AFTERNOON AND EVENING. .UNR...NONE. JOHNSON
In the hours before
Local storm report, Jun 12, 9:52 AM MST, 2 hours 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
1052 AM MDT TUE JUN 12 2001
TIME(MDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1035 AM 8 S DEADWOOD SD .75 INCH HAIL
06/12/01 LAWRENCE REPORTED BY STORM
SPOTTER.
1045 AM 4 S DEADWOOD SD .75 INCH HAIL
06/12/01 LA^WRENCE REPORTED BY PUBLIC.Special weather statement, Jun 12, 10:25 AM MST, 2 hours 15 minutes before
SDZ001-002-012>014-024>032-041>044-046-047-049-WYZ054-056>058-122015- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 1125 AM MDT TUE JUN 12 2001 ...MODERATE RISK OF SEVERE THUNDERSTORMS... THUNDERSTORMS ARE EXPECTED OVER NORTHEAST WYOMING AND ALL OF WESTERN SOUTH DAKOTA THIS AFTERNOON AND EVENING...WITH A MODERATE RISK OF SEVERE THUNDERSTORMS IN WESTERN SOUTH DAKOTA ALONG AND SOUTH OF INTERSTATE 90...AND A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE REMAINDER OF THE AREA. THE MAIN THREATS FROM THE SEVERE THUNDERSTORMS WILL BE HAIL LARGER THAN 3/4 INCH AND STRAIGHT LINE WINDS GREATER THAN 60 MPH AND ISOLATED TORNADOES. .DISCUSSION...LOW PRESSURE WILL INTENSIFY OVER WESTERN NEBRASKA WITH A WARM FRONT MOVING NORTH INTO FAR SOUTHERN SOUTH DAKOTA BY LATE THIS AFTERNOON. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND NORTH OF THE WARM FRONT WITH SOME STORMS BECOMING SEVERE. ANY SEVERE STORMS WILL PRODUCE LARGE HAIL...DAMAGING WINDS AND ISOLATED TORNADOES. THE MOST SEVERE STORMS ARE EXPECTED TO MOVE EAST AT 10 TO 20 MPH. COUNTIES INCLUDED IN THIS OUTLOOK ARE...CUSTER...TRIPP...BENNETT... SHANNON...JACKSON...ZIEBACH...PERKINS...MEADE...BUTTE...HARDING... CROOK...CAMPBELL...LAWRENCE...MELLETTE...TODD...WESTON...HAAKON... FALL RIVER AND PENNINGTON. WCJIN-WYNE CZEPYHA
The radar
The Rapid City radar (KUDX), 212 km away, was scanning. The volume nearest the first event began at 19:37 UTC.
Event by event
9 hail. Local standard time, as filed.
Hail, Weston
- When
- June 12, 1:35 PM MST
- Where
- Weston County, 5 mi N of Osage
- Measured
- 1 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 44.033, -104.400
Hail, Weston
- When
- June 12, 2:09 PM MST
- Where
- Weston County, Clareton
- Measured
- 1 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 43.700, -104.700
Hail, Weston
- When
- June 12, 2:15 PM MST
- Where
- Weston County, 15 mi W of Osage
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.967, -104.700
Hail, Weston
- When
- June 12, 2:16 PM MST
- Where
- Weston County, Clareton
- Measured
- 1 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 43.700, -104.700
Hail, Weston
- When
- June 12, 3:10 PM MST
- Where
- Weston County, Upton
- Measured
- 1.75 in hail
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 44.100, -104.633
Hail, Weston
- When
- June 12, 3:22 PM MST
- Where
- Weston County, Newcastle
- Measured
- 1 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.850, -104.217
Hail, Weston
- When
- June 12, 3:35 PM MST
- Where
- Weston County, 5 mi N of Osage
- Measured
- 1 in hail
- Reported by
- GENERAL PUBLIC
- Coordinates
- 44.033, -104.400
Hail, Weston
- When
- June 12, 3:42 PM MST
- Where
- Weston County, 17 mi S of Newcastle
- Measured
- 0.75 in hail
- Reported by
- UNKNOWN
- Coordinates
- 43.600, -104.217
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 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: 5254053, 5254054, 5254055, 5254056, 5254057, 5254058, 5254059, 5254060, 5254061.