Southern states declare emergencies ahead of potentially historic snow, as cold temps chill 220 million people
More than 220 million people across the United States are facing dangerous cold that will also open the door for a ...
Polar vortex maps show where arctic blast is set to freeze the U.S. as far as the Deep South
A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...