Weather Alerts For Hebgen Lake, MT

URGENT - WINTER WEATHER MESSAGE National Weather Service Great Falls MT 153 PM MST Sun Dec 21 2025 Northwest Beaverhead County-Gallatin and Madison County Mountains and Centennial Mountains- Including the following locations: Dewey, Big Hole Pass, Wise River, Big Sky, Raynolds Pass, Chief Joseph Pass, Wisdom, West Yellowstone, and Targhee Pass 153 PM MST Sun Dec 21 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MST MONDAY... * WHAT...Snow and mixed precipitation expected. Additional snow accumulations up to 2 inches over the valleys and 2 to 5 inches at and above pass level. The snow may mix with light freezing rain or drizzle this evening and tonight with ice accumulations up to a glaze. Winds may gust as high as 40 mph at times. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains and Northwest Beaverhead County. * WHEN...Until 9 AM MST Monday. * IMPACTS...Plan for winter driving conditions. Sidewalks and other surfaces may become icy and slippery in areas that observe freezing rain or drizzle. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website. &&

URGENT - IMMEDIATE BROADCAST REQUESTED AVALANCHE WARNING GALLATIN NATIONAL FOREST AVALANCHE CENTER Relayed by National Weather Service Great Falls MT 604 AM MST Sun Dec 21 2025 THE FOLLOWING MESSAGE IS TRANSMITTED AT THE REQUEST OF THE GALLATIN NATIONAL FOREST AVALANCHE CENTER. BACKCOUNTRY AVALANCHE WARNING IMMEDIATE BROADCAST REQUESTED 539 AM MST Sun Dec 21 2025 The Gallatin National Forest Avalanche Center has issued an avalanche warning. * WHAT... The avalanche danger is HIGH on all slopes. Natural and human-triggered slides are very likely. * WHERE...The mountains near Island Park, West Yellowstone * WHEN...In effect through Monday 530 AM MST. * IMPACTS...Heavy snowfall on a snowpack with unstable weak layers will make human triggered avalanches very likely. * PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche conditions exist. Backcountry travelers should stay off steep slopes and away from the bottom of steep slopes. Avalanches can be triggered from flat terrain. Steep slopes can avalanche far above and run into lower-angled terrain. Consult http://www.mtavalanche.com or www.avalanche.org for more detailed information. Similar avalanche danger may exist at locations outside the coverage area of this or any avalanche center.