Wyoming Severe Severe Thunderstorm Warning | Effective 06/20/2026 16:09

Headline: 
Severe Thunderstorm Warning issued June 20 at 5:09PM MDT until June 20 at 6:15PM MDT by NWS Cheyenne WY
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
June 20, 2026 - 4:09pm
Expires: 
June 20, 2026 - 5:15pm
Description: 
At 509 PM MDT, severe thunderstorms were located along a line extending from 13 miles north of Manning Ranch to Bennett Hill Campground to near Harris Park, moving east at 45 mph. HAZARD...70 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. Locations impacted include... Lusk, Guernsey, Fort Laramie, Glendo, Manville, Hartville, Orin, Van Tassell, Mule Creek Junction, Sibley Peak, Dull Center, Guernsey State Park, Pine Ridge Estates, Prairie Center, Keeline, Oregon Trail Ruts State Historic Site, Dwyer Junction, Fort Laramie National Historic Site, Rawhide Buttes, and Bennett Hill Campground. This includes Interstate 25 in Wyoming between mile markers 86 and 124.
Instruction: 
For your protection move to an interior room on the lowest floor of a building. Wind damage with these storms will occur before any rain or lightning. Do not wait for the sound of thunder before taking cover. SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from windows.
Area Description: 
Converse, WY; Goshen, WY; Niobrara, WY; Platte, WY
Forcast Office: 
NWS Cheyenne WY
Sender: 
w-nws.webmaster@noaa.gov