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.

A historic and deadly winter storm that stretches over 1,500 miles blanketed the southern U.S. on Tuesday with historic snow totals, including the first-ever Blizzard Warning for the Gulf Coast.

This winter's harshest arctic blast so far is coursing through Texas as the state is the worst in the world for flight cancellations.