Montana Moderate Special Weather Statement | Effective 08/18/2026 15:02

Headline: 
Special Weather Statement issued August 18 at 4:02PM MDT by NWS Great Falls MT
Event: 
Special Weather Statement
Urgency: 
Expected
Effective: 
August 18, 2026 - 3:02pm
Expires: 
August 18, 2026 - 3:45pm
Description: 
At 402 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 18 miles north of Geraldine to 10 miles east of Highwood. Movement was east at 25 mph. HAZARD...Wind gusts up to 50 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Geraldine, Shonkin, Iliad, and Square Butte.
Instruction: 
If outdoors, consider seeking shelter inside a building. Torrential rainfall is also occurring with these storms and may lead to localized flooding. Do not drive your vehicle through flooded roadways. These storms may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service.
Area Description: 
Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Little Belt and Highwood Mountains
Forcast Office: 
NWS Great Falls MT
Sender: 
w-nws.webmaster@noaa.gov