Wyoming Severe Severe Thunderstorm Warning | Effective 06/20/2026 13:59

Headline: 
Severe Thunderstorm Warning issued June 20 at 2:59PM MDT until June 20 at 4:00PM MDT by NWS Riverton WY
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
June 20, 2026 - 1:59pm
Expires: 
June 20, 2026 - 3:00pm
Description: 
SVRRIW The National Weather Service in Riverton has issued a * Severe Thunderstorm Warning for... Natrona County in central Wyoming... East central Fremont County in central Wyoming... * Until 400 PM MDT. * At 258 PM MDT, severe thunderstorms were located along a line extending from near Cottonwood Pass to near Powder River to 8 miles south of Alcova, moving east at 40 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Severe thunderstorms will be near... Bates Hole and Goldeneye Reservoir around 310 PM MDT. Emigrant Gap around 315 PM MDT. Other locations in the path of these severe thunderstorms include Casper, Mills, Red Butte, Red Wall, Paradise Valley, Bar Nunn, Beartrap Meadows County Park, Evansville, Homa Hills and Antelope Hills. This includes Interstate 25 between mile markers 176 and 233.
Instruction: 
For your protection move to an interior room on the lowest floor of a building.
Area Description: 
Fremont, WY; Natrona, WY
Forcast Office: 
NWS Riverton WY
Sender: 
w-nws.webmaster@noaa.gov