Arctic air has brought chilling temperatures as low as 12 degrees in New York City on Monday night but are we in a polar ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously ...

A new blast of Arctic air sweeping from north to south will bring bone-chilling temperatures to millions of Americans this ...

It's going to get cold in Tennessee. Meteorologists predict freezing temperatures for much of the state. Here's the latest.

Abnormal weather events and severe winter storms could be caused by a disrupted polar vortex. Find out here how the polar ...

Winter is making its presence known in New York City, as the polar vortex is bringing brutally cold temperatures to the ...

A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar ...

A rare winter storm is getting set to slam the Gulf Coast and South, with cities from Texas to Florida under Winter Storm Warnings.