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

The vortex is essentially an area of low pressure in the upper layers of the atmosphere over the polar region up north. This ...

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

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

Forecasters warn that a split polar vortex is set to bring a 'large supply of cold air' to North America in mid-February as a ...

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

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

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

Metro Vancouverites may face unseasonably cold weather as February continues thanks to the stratospheric polar vortex.

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

If you thought last week was cold, hold onto your hot lattes and be ready to bundle up as ( another ) winter storm is forecast to plunge arctic air deep into the Deep South by early next week.