...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 AM MST SUNDAY... * WHAT...Heavy snow expected. Total snow accumulations between 6 to 16 inches above 5500 feet, 2 to 6 inches below 5500 feet. * WHERE...Wasatch Back. * WHEN...From 11 PM this evening to 5 AM MST Sunday. * IMPACTS...Winter driving conditions can be expected on most routes, especially those in the Park City area including the Friday morning and evening commutes. * ADDITIONAL DETAILS...Two scenarios exist for this storm across the Wasatch Back regarding precipitation type. If temperatures remain near to below freezing through Friday evening below 5500 feet, snow accumulations will be at the higher range. If temperatures warm above freezing Friday morning, accumulations below 5500 feet will shift toward the lower end of the range. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For winter road conditions from the Utah Department of Transportation, visit http://www.udottraffic.utah.gov. For graphical depictions of the snowfall forecast, including Official NWS Forecast, High End Amount, and Low End Amount, visit weather.gov/slc/winter. &&