Main concern is the potential of significant ice accumulations producing dangerous if not impassable travel conditions, downed trees and power lines, and power outages. Highest accumulations are along the Cumberland Plateau, far northeastern TN into southwest VA, and into the mountains of western NC. Portions of the central and southern TN valleys may only see a light glaze of ice. Ice accumulation forecast is still low confidence.
Light wintry mix to begin moving across East TN during the day on Saturday, turning to heavier precipitation Saturday night. There's likely to be a lull for most of the area Saturday night into Sunday as temperatures rise and precipitation type switches to rain. Finally as the system exits Sunday night into Monday a light snowfall for northern TN into southwest Virginia is increasingly likely. Exact timing on precipitation changeover is highly uncertain.
Arctic Cold temperatures are expected early next week. Wind chills will drop to near zero Monday and Tuesday, and 5 to 15 degrees below zero across the higher elevations.
Be prepared for the upcoming winter storm. Prepare and plan for several days of difficult to impossible travel conditions, and have ways to stay warm (safely!) in cold weather.