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

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,

A cold blast gripping the U.S. South threatens to bring record-breaking snowfall to New Orleans and Houston and a deep freeze that endangers oil and