GREAT FALLS, Mont. / CHEYENNE, Wyo. – Two strong wind events are expected to batter the northern Rockies and High Plains through early this week, with gusts as high as 75 mph in Montana and 70 mph in southeast Wyoming, prompting multiple High Wind Warnings from the National Weather Service.
In Montana, the strongest winds are forecast from 2 a.m. to 9 p.m. MST Monday, impacting the Rocky Mountain Front and nearby plains, including East Glacier Park, Choteau, Browning, Cut Bank, and Babb. Southwest to west winds of 35 to 50 mph, gusting to 75 mph, will develop early Monday morning and persist through the day.
These winds may damage property, topple trees, and cause power outages, especially along exposed ridges and open plains. The Montana Department of Transportation warns of dangerous crosswinds on U.S. Highways 89 and 2, and near Marias and Rogers Passes.
Farther south, the National Weather Service in Cheyenne has issued High Wind Warnings for the South Laramie Range and Foothills, as well as the North Snowy Range Foothills, effective Monday night through Tuesday afternoon. Winds of 25–40 mph with gusts up to 70 mph will threaten travel on Interstate 80 between Laramie and Cheyenne and Interstate 25 near Bordeaux.
Lightweight and high-profile vehicles—including semi-trucks, trailers, and campers—should delay travel during peak winds.
Residents across both states are urged to secure outdoor objects, as flying debris could cause property damage or injury.
