Much of North Texas is also under a freezing fog advisory through 9 a.m. Saturday, according to the NWS. Conditions are then expected to improve later in the morning, as the fog starts to clear and the temperatures rise, meteorologists say.

DALLAS - A Freezing Fog Advisory has been issued for a large portion of North Texas. Roads are already beginning to ice up across North Texas with accidents reported across parts of Denton, Tarrant and Collin counties.

DALLAS - A Freezing Fog Advisory has been issued for a large portion of North Texas. DFW Freezing Fog Advisory. The National Weather Service of Fort Worth issued the advisory for

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.

Dallas-Fort Worth area flights scheduled for Friday have already begun being nixed after a winter storm prompted mass cancelations on Thursday. More than 200 flights in and out of DFW International Airport Friday have been canceled,

A significant winter storm marched across the South on Friday after producing snowy and icy weather in the Dallas Metroplex and the southern Plains on Thursday.