Storm Events Database

Event Details

Event Thunderstorm Wind
Magnitude 74 kts.
State WYOMING
County/Area WASHAKIE
WFO RIW
Report Source NWS Storm Survey
NCDC Data Source CSV
Begin Date 2010-08-30 12:57:00.0 MST-7
Begin Location 2S TEN SLEEP
Begin Lat/Lon 43.99/-107.41
End Date 2010-08-30 13:03:00.0 MST-7
End Location 1SSE TEN SLEEP
End Lat/Lon 44/-107.42
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 50.00K
Crop Damage 0.00K
Episode Narrative A supercell thunderstorm formed over northern Hot Springs County and swept east-northeast across the Badlands through eastern Washakie County. The severe storm eventually moved into the Nowood River Valley south of Ten Sleep. Along its 40-mile track, the thunderstorm produced ping pong to golf ball sized hail and an EF1 tornado.
Event Narrative Ping pong ball sized hail driven by wind gusts estimated to be around 85 mph damaged roofs, rain gutters, windows, and siding of several homes in the Nowood River Valley south of Ten Sleep. The wind also ripped metal roofing from a garage, while another garage was significantly damaged by a toppled Cottonwood tree. A rear flank downdraft associated with a nearby supercell thunderstorm was responsible for the damaging wind.


     ‚Äč



All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 150.00K 25.00K
CROSBY HOT SPRINGS CO. WY 08/30/2010 11:50 MST-7 Hail 1.50 in. 0 0 0.00K 0.00K
TEN SLEEP ARPT WASHAKIE CO. WY 08/30/2010 12:51 MST-7 Tornado EF1 0 0 70.00K 0.00K
TEN SLEEP WASHAKIE CO. WY 08/30/2010 12:57 MST-7 Hail 1.50 in. 0 0 30.00K 25.00K
TEN SLEEP WASHAKIE CO. WY 08/30/2010 12:57 MST-7 Thunderstorm Wind 74 kts. MG 0 0 50.00K 0.00K
TEN SLEEP WASHAKIE CO. WY 08/30/2010 13:00 MST-7 Funnel Cloud 0 0 0.00K 0.00K
TEN SLEEP ARPT WASHAKIE CO. WY 08/30/2010 13:00 MST-7 Hail 2.00 in. 0 0 0.00K 0.00K
TEN SLEEP WASHAKIE CO. WY 08/30/2010 13:09 MST-7 Hail 0.75 in. 0 0 0.00K 0.00K
Totals: 0 0 150.00K 25.00K