Experts have shared their insights on the 'complex' weather phenomenon amid fears it could leave vast swathes of the country ...

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

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

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 ...

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

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

With last week's freeze being the second time temperatures dipped below freezing this winter, many are wondering if this ...