All Houston airports will reopen Wednesday after shutting down on Jan. 21 as a winter storm barreled through South Texas.

A rare, historic snowfall blanketed parts of the southern U.S. on Tuesday, allowing residents to play in the rather unusual weather. Families went snow tubing in Houston. People made snowballs and snow angels. People were even seen skiing on Bourbon Street.

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.