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

Life-threatening wind chills of -30 to -55 degrees are expected across the Rockies, northern Plains and Upper Midwest through ...

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

The long-range data shows we may be done with a true Arctic air mass similar to what we experienced in January. But we ...

Winter isn’t over yet! A polar vortex is bringing subzero winds, frigid temperatures, and possibly snow to the U.S., including snowbird states like Florida. National weather agencies and ...

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

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

However, the polar vortex could bring severe weather conditions which could affect travel safety and disrupt daily activities. Vulnerable groups, such as young infants and senior citizens ...

"Particularly the Rockies, the northern Plains, the Upper Midwest, are expected to see those wind chill ... These conditions are all thanks to a familiar sounding occurrence: the polar vortex, a large ...

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

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

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