Roughly 40 million people from Texas to the Carolinas are under winter weather alerts, as a rare winter storm brings bone-chilling temperatures and potentially historic snowfall to cities unused to harsh cold weather.

A new winter storm will bring rain and some of the coldest temperatures of the season to the southeastern United States, including much of Florida.

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