Montana, Wyoming Severe Severe Thunderstorm Warning | Effective 06/27/2026 13:57

Headline: 
Severe Thunderstorm Warning issued June 27 at 2:57PM MDT until June 27 at 3:30PM MDT by NWS Billings MT
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
June 27, 2026 - 1:57pm
Expires: 
June 27, 2026 - 2:30pm
Description: 
At 257 PM MDT, severe thunderstorms were located along a line from 13 miles south of Ashland to 31 miles west of Biddle, or along a line from 35 miles southeast of Colstrip to 39 miles southwest of Broadus, moving northeast at 25 mph. HAZARD...60 mph wind gusts and half dollar size hail. These storms have a history of producing up to golf ball sized hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Ashland, Otter, Moorhead, Birney Village, Arvada and Northern Cheyenne Indian Reservation.
Instruction: 
Seek shelter inside a well-built structure and stay away from windows. These storms are capable of producing damaging winds and large hail. Torrential rainfall is also occurring with these storms and may lead to flash flooding. Do not drive your vehicle through flooded roadways.
Area Description: 
Powder River, MT; Rosebud, MT; Sheridan, WY
Forcast Office: 
NWS Billings MT