Weather Alerts For Spencer, ID

BULLETIN - IMMEDIATE BROADCAST REQUESTED BACKCOUNTRY AVALANCHE WARNING...CORRECTED Gallatin National Forest Avalanche Center Bozeman MT Relayed by National Weather Service Pocatello ID 616 AM MST Sun Dec 21 2025 ...The Gallatin National Forest Avalanche Center in Bozeman has ISSUED an AVALANCHE WARNING which is in effect until 530 AM MST Monday... * WHAT...Avalanche warning. The avalanche danger is HIGH on all slopes. Natural and human triggered slides are very likely. * WHERE...The mountains near Island Park, West Yellowstone, and Cooke City. * WHEN...530 AM MST Sunday to 530 AM MST Monday. * 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 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.

URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 400 AM MST Sun Dec 21 2025 Bear River Range-Big Hole Mountains-Centennial Mountains - Island Park- Including the cities of Kilgore, Emigration Summit, Island Park, and Victor 400 AM MST Sun Dec 21 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST MONDAY... * WHAT...Snow. Total snow accumulations 4 to 10 inches above 6500 feet. * WHERE...Big Hole Mountains, Centennial Mountains - Island Park, and Bear River Range. * WHEN...Until 11 AM MST Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. &&