Montana Moderate Special Weather Statement | Effective 08/18/2026 17:13

Headline: 
Special Weather Statement issued August 18 at 6:13PM MDT by NWS Great Falls MT
Event: 
Special Weather Statement
Urgency: 
Expected
Effective: 
August 18, 2026 - 5:13pm
Expires: 
August 18, 2026 - 6:00pm
Description: 
At 613 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from 23 miles east of Winifred to near Roy. Movement was east at 25 mph. HAZARD...Wind gusts up to 50 mph and penny 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... Roy and Fergus.
Instruction: 
If outdoors, consider seeking shelter inside a building.
Area Description: 
Fergus County below 4500ft; Snowy and Judith Mountains
Forcast Office: 
NWS Great Falls MT
Sender: 
w-nws.webmaster@noaa.gov