A cluster of severe thunderstorms developed across southern Campbell County and formed into a line as they moved into southern Crook and Weston Counties. Quarter sized hail and wind gusts over 70 mph were reported, damaging trees and buildings across the area.

Thunderstorm Wind in CAMPBELL, WYOMING
From 22-JUN-10 16:35:00 to 22-JUN-10 16:35:00 (MST-7)
Location: ROZET
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated at 80 mph.

Thunderstorm Wind in CAMPBELL, WYOMING
From 22-JUN-10 16:40:00 to 22-JUN-10 16:40:00 (MST-7)
Location: ROZET
Magnitude: 70.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several power poles were blown down along Bishop Road, a 12 inch diameter tree was snapped, and a deck was torn from a house and thrown 100 yards.

Thunderstorm Wind in CAMPBELL, WYOMING
From 22-JUN-10 16:53:00 to 22-JUN-10 16:53:00 (MST-7)
Location: ROZET
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Estimated wind gusts at 60 mph.

Hail in CAMPBELL, WYOMING
From 22-JUN-10 16:53:00 to 22-JUN-10 16:53:00 (MST-7)
Location: ROZET
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm Wind in CAMPBELL, WYOMING
From 22-JUN-10 16:55:00 to 22-JUN-10 16:55:00 (MST-7)
Location: GILLETTE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind gusts were estimated at 60 mph.

Thunderstorm Wind in CAMPBELL, WYOMING
From 22-JUN-10 16:50:00 to 22-JUN-10 16:50:00 (MST-7)
Location: GILLETTE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter estimated winds at 70 mph.

Hail in WESTON, WYOMING
From 22-JUN-10 17:14:00 to 22-JUN-10 17:14:00 (MST-7)
Location: UPTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm Wind in CROOK, WYOMING
From 22-JUN-10 17:18:00 to 22-JUN-10 17:30:00 (MST-7)
Location: PINE HAVEN
Magnitude: 63.00 MG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts between 70 and 80 mph blew down sheds, blew apart fences, and tore off shingles throughout Pine Haven.

Thunderstorm Wind in WESTON, WYOMING
From 22-JUN-10 17:30:00 to 22-JUN-10 17:30:00 (MST-7)
Location: FOUR CORNERS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wind gusts estimated at 60 mph.

Thunderstorm Wind in CROOK, WYOMING
From 22-JUN-10 17:17:00 to 22-JUN-10 17:17:00 (MST-7)
Location: PINE HAVEN
Magnitude: 68.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in WESTON, WYOMING
From 22-JUN-10 17:12:00 to 22-JUN-10 17:12:00 (MST-7)
Location: OSAGE
Magnitude: 65.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A metal shop building was flattened by strong wind gusts.

Thunderstorm Wind in WESTON, WYOMING
From 22-JUN-10 17:15:00 to 22-JUN-10 17:15:00 (MST-7)
Location: OSAGE
Magnitude: 74.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew over a metal shed and snapped and overturned trees.

Thunderstorm Wind in CROOK, WYOMING
From 22-JUN-10 17:05:00 to 22-JUN-10 17:10:00 (MST-7)
Location: MOORCROFT
Magnitude: 67.00 MG
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Newspaper

Strong winds downed branches, trees, and a few power poles; heavily damaged or destroyed small structures; and ripped the roof off a mobile home.

Thunderstorm Wind in CROOK, WYOMING
From 22-JUN-10 17:10:00 to 22-JUN-10 17:10:00 (MST-7)
Location: MOORCROFT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated at 70 mph.

Thunderstorm Wind in WESTON, WYOMING
From 22-JUN-10 17:10:00 to 22-JUN-10 17:15:00 (MST-7)
Location: UPTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Large tree branches were broken.

Thunderstorm Wind in CAMPBELL, WYOMING
From 22-JUN-10 16:55:00 to 22-JUN-10 16:55:00 (MST-7)
Location: ROZET
Magnitude: 70.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A forty by sixty foot shop building was destroyed by strong wind gusts with large pieces of the roof and walls blown about 100 yards from the foundation.

Thunderstorm Wind in CAMPBELL, WYOMING
From 22-JUN-10 16:25:00 to 22-JUN-10 16:30:00 (MST-7)
Location: WRIGHT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A 60 mph wind gust was measured at the highway weather station on WY Highway 59 at the Belle Fourche River.

Tornado in WESTON, WYOMING
From 22-JUN-10 16:38:00 to 22-JUN-10 16:38:00 (MST-7)
Location: OSAGE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A small tornado briefly touched down in a field northwest of Osage.

Thunderstorm Wind in CAMPBELL, WYOMING
From 22-JUN-10 16:01:00 to 22-JUN-10 16:01:00 (MST-7)
Location: SAVAGETON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Wind gusts estimated at 60 mph.

Thunderstorm Wind in CAMPBELL, WYOMING
From 22-JUN-10 16:08:00 to 22-JUN-10 16:08:00 (MST-7)
Location: WRIGHT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated wind gusts at 60 mph.

Hail in CAMPBELL, WYOMING
From 22-JUN-10 16:11:00 to 22-JUN-10 16:11:00 (MST-7)
Location: WRIGHT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in CAMPBELL, WYOMING
From 22-JUN-10 16:15:00 to 22-JUN-10 16:15:00 (MST-7)
Location: WRIGHT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter