Winter Storm Enzo was not your typical winter storm, but its rain and snow were caused by a classic setup. Enzo never truly had a robust low pressure system, but instead was a large overlap between the coldest air of the season, abundant moisture and the tail end of a deep upper-level trough.

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 winter storm that is expected to begin in Texas next week could end up bringing snow and ice to parts of Florida.