A dramatic weather shift is unfolding across the South as a powerful November heat wave replaces a recent deep freeze. Over 100 million Americans are experiencing unseasonably warm temperatures this week, with the heat wave stretching from the Southern Plains to the Southeast. Just days after more than 80 record lows were broken, the region has now logged over 300 record highs. Areas in Texas, New Mexico, and Arizona have seen their warmest early November on record. Temperatures are soaring 15–20 degrees above normal, and more records may fall through Thursday.