Parts of 11 southern and midwestern states are under a winter storm watch Wednesday as Winter Storm Cora threatens to bring snow, freezing rain and frigid temperatures to the region before possibly moving through the mid-Atlantic on Saturday, the National Weather Service warns.

NORFOLK, Va. (AP) — A developing winter storm threatens to drop snow, sleet and freezing rain on parts of Texas, Oklahoma and Arkansas as frigid air that escaped the Arctic plunges temperatures to subfreezing levels in some of the southernmost points of the U.S.

Thursday to Saturday will have another dangerous winter situation in the southern U.S. Here's a timeline on where and when you have to be at a certain location to avoid the danger.