Snow is likely to fall across South Texas tonight into Tuesday. North Texas will remain mainly dry and quite cold.

An arctic air mass sprawling across the eastern, central and parts of the western U.S. on Monday will channel temperatures 20-30 degrees below already historically cold January averages and was poised to slam parts of the South with a disruptive winter storm.

Frigid temperatures engulfed Texas and other parts of the South on Monday ahead of a rare winter storm expected to bring heavy snow and disruptive ice accumulations to the region,