Millions of people across the northern Gulf Coast braced Tuesday for a rare winter storm that’s expected to scatter heavy snow, sleet and freezing rain around the Deep South as a blast of Arctic air plunges much of the eastern U.S. into a deep freeze.

A winter storm was on a track to sweep through Texas and Louisiana, across the Gulf Coast and deep into Florida, significant snow and ice in tow.

The snow storm could hit over a dozen states through Wednesday, including Texas, Louisiana, Mississippi, Alabama, Florida, Georgia and the Carolinas.