Weather Alerts For Irwin, ID

URGENT - WINTER WEATHER MESSAGE National Weather Service Pocatello ID 149 PM MST Fri Dec 26 2025 Caribou Range- Including the cities of Swan Valley and Wayan 149 PM MST Fri Dec 26 2025 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST SATURDAY... * WHAT...Snow. Additional snow accumulations between 4 and 10 inches. Winds gusting as high as 45 mph. * WHERE...Caribou Range. * WHEN...Until 5 PM MST Saturday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday evening commute. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions. &&