Weather Alerts For Sun Valley, ID

URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 400 AM MST Thu Dec 25 2025 Sun Valley Region-Big Lost Highlands/Copper Basin- Including the cities of Ketchum, Copper Basin, Galena, and Sun Valley 400 AM MST Thu Dec 25 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to 4 inches, mostly at Galena Summit and into the higher elevation backcountry. * WHERE...Big Lost Highlands/Copper Basin and Sun Valley Region. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. &&