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

A once-in-a-lifetime winter storm pummeled the South, all the way down to the Gulf Coast, with snow and ice. Here's the latest.

Frigid temperatures engulfed the South on Monday ahead of a winter storm that's expected to spread heavy snow and disruptive ice around a region from Texas to north Florida that rarely sees such weather,