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 is poised to slam parts of the South with a disruptive winter storm.

Around 40 million people in the U.S. are under a winter storm warning from an unusual blast of severe winter weather.

JACKSONVILLE, FLA – A rare winter storm is set to impact North Florida and southern Georgia on Tuesday night into Wednesday morning and it will bring the risk of ice and even some snow to the region.