Almost all of East Texas is under a cold weather advisory through Sunday morning, and the National Weather Service in Shreveport says confidence in wintry precipitation next week is increasing.

Almost all of East Texas is under a cold weather advisory through Sunday morning, and the National Weather Service in Shreveport says confidence in wintry precipitation next week is increasing.

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to millions.

Confidence is increasing that East Texas will see some sort of winter precipitation Thursday and Friday, The National Weather Service in Shreveport said.

The National Weather Service says the area could see heavy mixed-precipitation with total snow accumulations between 2"-6" and ice accumulations up to 1/2".

TxDOT is pre-treating East Texas roads, including I-20, with a brine solution to combat potential ice. Drivers should stay cautious near bridges, ramps, and overpasses, as they freeze first. Stay updated on road conditions at DriveTexas.

CBS19 has reached out to some area school districts to see what their protocol is and what precautions they're taking.

Below are the maps of the impacted regions: Portions of northern and east Texas can be seen under a winter storm watch on Wednesday. (Photo from the National Weather Service) Portions of northern ...

According to the National Weather Service, snowfall ranging from two to five inches is possible in the Dallas-Fort Worth area. North Texas may see higher precipitation accumulations, while southern and Central Texas expect less. A mix of sleet and ice is also anticipated in Central Texas.

Electric Reliability Council of Texas (ERCOT) told Newsweek: "ERCOT has issued a Weather Watch from January 20-23 due to predicted extreme cold weather across the ERCOT region, higher electrical demand, and the potential for lower reserves. Winter precipitation is also expected across parts of the state.

Dangerously cold weather spread over the Midwest on Saturday and is headed toward the East Coast, where temperatures well below seasonal norms are expected starting late Sunday and into next week.