The Tennessee Valley could see some of the heaviest snowfall, with 6 inches expected on Friday. A wide swath of the country is under winter weather warnings and advisories and will see impacts including "widespread closures, treacherous travel, scattered power outages, and downed branches," the weather service said.

A winter storm that dropped heavy snow and glazed roads throughout the U.S. South is maintaining its icy grip on much of the region into the weekend