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.

Areas of dense fog will result in locally hazardous driving conditions overnight due to low visibility below one quarter mile. The dense fog will slow travel along Interstate 81.