National Weather Service United States Department of Commerce

A Large Storm System Will Impact The Western U.S. This Weekend

A large storm system will deliver widespread impacts to the Western U.S. this weekend. Widespread heavy snow, heavy rain, strong thunderstorms and a number of coastal hazards will likely cause travel issues. The locally heavy rain in north-central California and southwest Oregon may cause flash flooding, especially near recent and vulnerable burn scar areas. Read More >

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Last Map Update: Sun, Dec. 8, 2019 at 7:33:03 am MST

National Weather Service Great Falls, MTNational Weather Service Glasgow, MTNational Weather Service Bismarck, ND
National Weather Service Missoula, MTZoom

National Weather Service Rapid City, SD
National Weather Service Pocatello, IDNational Weather Service Western and Central WyomingNational Weather Service Cheyenne, WY

Mixed precipitation will come through southeast Montana today. Freezing rain will occur in areas east of a line from Roundup to Hardin and through Broadus. A mix of rain and snow will occur everywhere else, with a sudden freeze possible in the late afternoon that will result in icy surfaces. Take caution if travelling, and be prepared for a quick transition to ice on all surfaces. Dial 5 1 1 for road conditions.
South central and southeast Montana, and north central Wyoming, will see a fast moving weather system move across the region today through early evening. Look for falling temperatures through the day and a shot of wintry precipitation, possibly including some brief freezing rain or drizzle. Snowfall accumulations of 1 or 2 inches will be common for most of the lower elevations. Roads may become suddenly slick as wet or slushy surfaces freeze late in the day. Please drive with caution.


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