What Is a Polar Vortex? Arctic Weather Pattern Set to Blast Over a Dozen States With Season's Coldest Temperatures

Hang on to your coats and scarves: While the first part of this week brought a brief reprieve from the brutally cold weather the U.S. has been experiencing since January, frigid temperatures are about to make a comeback. 

According to Accuweather, a cold front will come through the Great Lakes and Ohio Valley regions as well as the Northeast later on this week, “bringing another round of plunging temperatures and snow.” Fox Weather notes that some areas of the Northeast will experience wind...