Montana Severe Severe Thunderstorm Warning | Effective 09/06/2026 18:32

Headline: 
Severe Thunderstorm Warning issued September 6 at 7:32PM MDT until September 6 at 8:30PM MDT by NWS Great Falls MT
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
September 6, 2026 - 6:32pm
Expires: 
September 6, 2026 - 7:30pm
Description: 
At 731 PM MDT, severe thunderstorms were located along a line extending from 17 miles south of Geyser to 20 miles southwest of Stanford to 26 miles northeast of White Sulphur Springs, moving east at 25 mph. HAZARD...Tennis ball size hail. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect damage to roofs, siding, windows, and vehicles. Locations impacted include... Stanford, Windham, Moccasin, Ackley Lake State Park, Sapphire Village, Utica, and Benchland.
Instruction: 
Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building.
Area Description: 
Judith Basin, MT
Forcast Office: 
NWS Great Falls MT
Sender: 
w-nws.webmaster@noaa.gov