Snow, sleet and freezing rain predicted to fall throughout the day Thursday could spell delays at Dallas airports.

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.

Snow continues to fall across North Texas after a winter storm warning was dropped early Friday morning. Several inches of a wintry mix of sleet and snow were forecast to fall over North Texas between Thursday and Friday.