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

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 ...

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

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

A polar vortex is bringing arctic air into the country next week. Forecast maps show when freezing temperatures will sweep ...

An arctic blast will send temperatures across the United States plummeting as bitterly cold air that originated in Siberia ...

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

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

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

A series of disturbances in the atmosphere is sending the polar vortex south (again) next week with a burst of even colder ...

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