Forecasters have told homeowners to brace for a new ice storm after predicting that the polar vortex would 'split' off and ...

Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by treacherous conditions.

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

Snow across the Midwest, as seen by satellites ... though that’s not clear from visible light images—was a polar vortex that pushed cold Arctic air far south into the continental U.S. From ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the South.

The most unusually cold air in the Northern Hemisphere will move into the Plains and Midwest this weekend as the polar vortex lobe zaps the country like a jellyfish tentacle. Temperatures may be ...

A polar vortex is slated to sweep most of the continental United States bringing a hazardous freeze to millions of Americans from the Deep South to the Northeast Saturday going into next week.

A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar vortex invades ... In the Midwest, the wind chill could make it feel ...

Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...

According to the NWS, the Arctic polar vortex is a powerful band of west-to-east winds that develops in the stratosphere, ...

The upcoming midweek storm is one of several systems that promises to bring precipitation and eventually the month's coldest ...