Active Weather Alerts
Severe Thunderstorm Warning
Issued: 4:26 AM Sep. 7, 2026 – National Weather Service
The National Weather Service in Great Falls has issued a * Severe Thunderstorm Warning for... Northeastern Fergus County in central Montana... * Until 1130 PM MDT. * At 1026 PM MDT, a severe thunderstorm was located 11 miles southwest of Roy, or 17 miles northeast of Lewistown, moving northeast at 25 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Roy and Fergus. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...1.25 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...<50 MPH
Severe Thunderstorm Warning
Issued: 4:24 AM Sep. 7, 2026 – National Weather Service
The National Weather Service in Great Falls has issued a * Severe Thunderstorm Warning for... Northeastern Fergus County in central Montana... * Until 1115 PM MDT. * At 1024 PM MDT, a severe thunderstorm was located 17 miles north of Roy, or 32 miles southwest of Zortman, moving northeast at 25 mph. HAZARD...Tennis ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. * This severe thunderstorm will remain over mainly rural areas of northeastern Fergus County. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && THUNDERSTORM DAMAGE THREAT...CONSIDERABLE; HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...2.50 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
Severe Thunderstorm Watch
Issued: 4:08 AM Sep. 7, 2026 – National Weather Service
SEVERE THUNDERSTORM WATCH 662 REMAINS VALID UNTIL 1 AM MDT MONDAY FOR THE FOLLOWING AREAS IN MONTANA THIS WATCH INCLUDES 5 COUNTIES IN CENTRAL MONTANA FERGUS IN NORTH CENTRAL MONTANA BLAINE CHOUTEAU HILL LIBERTY THIS INCLUDES THE CITIES OF BIG SANDY, CARTER, CHESTER, CHINOOK, FORT BENTON, GRASS RANGE, HARLEM, HAVRE, HAYS, LEWISTOWN, LEWISTOWN DIVIDE, ROCKY BOY, RUDYARD, WHITLASH, AND WINIFRED.
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