Weather Alerts For Island Park, ID

URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 741 PM MST Fri Dec 19 2025 Bear River Range-Caribou Range-Big Hole Mountains-Centennial Mountains - Island Park- Including the cities of Island Park, Victor, Kilgore, Wayan, Emigration Summit, and Swan Valley 741 PM MST Fri Dec 19 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY... * WHAT...Snow. Additional snow accumulations up to 3 inches. Winds gusting as high as 45 mph. * WHERE...Big Hole Mountains, Centennial Mountains - Island Park, Bear River Range, and Caribou Range. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Plan on slippery road conditions. Gusty winds could bring down tree branches. Blowing snow could result in reduced visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. &&