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 ...
Powerful polar vortex in the stratosphere brings frigid temperatures to US
A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...
Over 75% of the US expected to face freezing temperatures this week as rare winter storm barrels toward the South
Most of the United States is being assailed with extreme winter weather this week as Arctic air blasts south from Canada, ...