Montana Severe Thunderstorm Warning | Effective 05/13/2026 13:50

Headline: 
Severe Thunderstorm Warning issued May 13 at 2:50PM MDT until May 13 at 3:30PM MDT by NWS Great Falls MT
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 13, 2026 - 1:50pm
Expires: 
May 13, 2026 - 2:30pm
Description: 
SVRTFX The National Weather Service in Great Falls has issued a * Severe Thunderstorm Warning for... Southeastern Teton County in north central Montana... Southwestern Chouteau County in north central Montana... Northwestern Cascade County in central Montana... * Until 330 PM MDT. * At 249 PM MDT, a severe thunderstorm was located 8 miles northeast of Cascade, moving northeast at 55 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... Great Falls, Cascade, Black Eagle, Carter, Floweree, Portage, Malmstrom Afb, Eden, Stockett, Tracy, Vaughn, First Peoples Buffalo Jump State Park, Sun River, Centerville, Ulm, and Sand Coulee.
Instruction: 
For your protection move to an interior room on the lowest floor of a building.
Area Description: 
Cascade, MT; Chouteau, MT; Teton, MT
Forcast Office: 
NWS Great Falls MT