If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info.

* WHAT...Heavy snow expected. Total snow accumulations of 1 to 2 feet. Winds gusting as high as 40 mph at times. * WHERE...Wind River Mountains West and Wind River Mountains East. * WHEN...From 11 PM this evening to 11 PM MDT Sunday. * IMPACTS...Travel could be very difficult on Wyoming Route 28 over South Pass. * ADDITIONAL DETAILS...There will be two periods of snowfall, with a brief break in precipitation occurring Saturday evening.