Atmospheric river to bring a wintry mix of rain and snow
The Northern Rockies will remain cool and showery today and Tuesday, with precipitation increasing during the afternoon. While snow levels may drop to valley floors, road impacts should remain minimal since most showers will occur during the day.
A brief break in precipitation is expected Wednesday as a ridge of high pressure moves through. However, another disturbance arriving Thursday will bring widespread precipitation, continuing an active weather pattern into the weekend.
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WINTER WEATHER ADVISORY is in effect until 8 AM Monday for the Northern Clearwater Mountains-Southern Clearwater Mountains above 3500 ft. Snow Above 3500ft. Likelihood of developing or ongoing minor impacts from snow is greater than 90 percent. Additional snow accumulations between 2 and 6 inches.
WINTER WEATHER ADVISORY is in effect until 9 AM Monday for the Potomac/Seeley Lake Region. Snow. Likelihood of developing or ongoing minor impacts from snow is greater than 80 percent. Additional snow accumulations up to 2 inches.
WINTER WEATHER ADVISORY is in effect from 6 PM tonight until 9 AM Monday for the Butte/Blackfoot Region. Snow expected. Likelihood of minor impacts from snow is greater than 90 percent. Total snow accumulations up to 3 inches with 2 to 6 inches on MacDonald Pass and around Georgetown Lake. Winds gusting as high as 35 mph.
WINTER WEATHER ADVISORY is in effect until 9 AM Monday for the Bitterroot/Sapphire Mountains. Snow. Likelihood of developing or ongoing minor impacts from snow is greater than 90 percent. Additional snow accumulations 2 to 6 inches.
WINTER WEATHER ADVISORY is in effect until noon Monday for the Gallatin and Madison County Mountains and Centennial Mountains- Including the following locations: Targhee Pass, Big Sky, Raynolds Pass, and West Yellowstone. Snow expected. Total snow accumulations up to 2 inches possible below 7000 feet and between 4 and 8 inches possible above 7000 feet. Wind gust up to 70 mph.
WINTER WEATHER ADVISORY is in effect until noon Monday for the East Glacier Park Region-Southern Rocky Mountain Front- Including the following locations: Saint Mary, Logan Pass, East Glacier Park, Babb, Kiowa, Rogers Pass, and Marias Pass. Snow. Additional snow accumulations of 3 to 6 inches. Winds gusting as high as 55 mph.
HIGH WIND WARNING is in effect until midnight tonight for the Big Belt, Bridger and Castle Mountains-Madison River Valley- Beaverhead and Western Madison below 6000ft-Ruby Mountains and Southern Beaverhead Mountains-Gallatin and Madison County Mountains and Centennial Mountains- Including the following locations: Jeffers, Trident, Norris, Bozeman Pass, Targhee Pass, Monida Pass, Glen, Big Sky, Cameron, Ennis, Battle Ridge Pass, Maudlow, Deep Creek Pass, Dillon, Waterloo, Bannack, McAllister, Raynolds Pass, and West Yellowstone. Southwest winds 35 to 45 mph, with gusts up to 70 mph expected.
HIGH WIND WARNING is in effect until midnight tonight for the Elkhorn and Boulder Mountains-Missouri Headwaters-Gallatin Valley- Including the following locations: Willow Creek, Pony, Bozeman, Elk Park Pass, Wickes, Whitehall, Corbin, Clancy, Gallatin Gateway, Boulder, Three Forks, Homestake Pass, Montana City, and Harrison. Southwest winds 35 to 45 mph, with gusts around 65 mph expected.
HIGH WIND WARNING is in effect until 3 AM Monday for the Northern Sweet Grass-Melville Foothills- Including the locations of Melville and Big Timber. Southwest winds 30 to 40 mph with gusts of 60 to 70 mph expected.
AVALANCHE WARNING is in effect until 6 AM Tuesday for The Centennial Mountains near Island Park and the Lionhead area near West Yellowstone. Heavy snowfall with very strong winds will overload slopes & avalanches will be crashing far downhill. The avalanche danger is HIGH.