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

Ranked dead last, or perhaps not mentioned at all, would probably be the only state that sits partly within the Arctic Circle ...

It's like "bomb cyclone" or "firenado." It seems like the sort of phenomenon that would be responsible for the ...

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

How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the ...

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

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

An Arctic blast that began in the northern plains on Saturday spread bitter cold from the Rockies through the East Coast and ...

A brutal polar vortex is set to bury the Big Apple in snow Sunday and then deliver deadly single-digit temperatures that will ...