Winter Weather Advisory

Full Alert Message

URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 102 PM MDT Fri Oct 3 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM SATURDAY TO 6 PM MDT SUNDAY... * WHAT...Heavy snow possible. Total snow accumulations of 6 to 12 inches above 9000 feet with localized amounts of 14 to 18 inches in the highest peaks. Elevations between 7000 and 9000 feet can see total snow accumulations of a trace to 6 inches. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...From 6 PM Saturday to 6 PM MDT Sunday. * IMPACTS...Travel could be difficult at times especially along US 14 over Granite Pass and US 16 over Powder River Pass. * ADDITIONAL DETAILS...Heaviest snow expected to occur Sunday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info.