Climate Central: Temperatures are set to drop to levels that are low even for the middle of winter across the eastern U.S. starting Thursday and again over the weekend as Arctic air makes repeated surges southward. Temperatures Sunday morning could be below freezing as far south as Florida.
This pattern may sound familiar to those in the eastern U.S. who shivered under repeated such incursions last winter, when the term "polar vortex' became all the rage. The non-stop sucker punches of frigid air also brought...