Montana Severe Severe Thunderstorm Warning | Effective 09/06/2026 16:27

Headline: 
Severe Thunderstorm Warning issued September 6 at 5:27PM MDT until September 6 at 6:15PM MDT by NWS Great Falls MT
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
September 6, 2026 - 4:27pm
Expires: 
September 6, 2026 - 5:15pm
Description: 
SVRTFX The National Weather Service in Great Falls has issued a * Severe Thunderstorm Warning for... Southeastern Lewis and Clark County in west central Montana... * Until 615 PM MDT. * At 527 PM MDT, a severe thunderstorm was located 20 miles northeast of Garrison, or 21 miles west of Helena, moving northeast at 45 mph. HAZARD...Ping pong 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... Wolf Creek, Marysville, Canyon Creek, Black Sandy State Park, and Austin.
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: 
Lewis and Clark, MT
Forcast Office: 
NWS Great Falls MT
Sender: 
w-nws.webmaster@noaa.gov