A rare winter storm churned across the U.S. Gulf Coast on Tuesday, bringing heavy snow, ice and wind gusts to a region where flurries are unusual, while much of the United States remained in a deep freeze.

Millions of Americans across the South are bracing for a rare and potentially dangerous winter storm threatening to bring snow, sleet, ice and rain from Texas to the Carolinas. CBS News reporter Kati Weis has more from New Orleans and CBS News meteorologist Grant Gilmore has a look at the forecast.