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

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 ...

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

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

Most of the U.S. will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send ...

Donald Trump announced the change to his plans on TruthSocial, pointing to a wind chill forecast by the National Weather ...

Snow and winds are likely to disrupt traffic, trigger flight cancellations, and cause headaches for people traveling to D.C.

Here's the latest on the winter storm. A historic winter storm is poised to produce potentially record-breaking snows from ...

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

These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...