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.

An expanding polar vortex is expected to lower temperatures across the eastern half of the U.S., with the potential for record-breaking cold in January. Dangerously cold weather from the Arctic is ...

Abnormal weather events and severe winter storms could be caused by a disrupted polar vortex. Find out here how the polar vortex affects the weather.

A polar vortex headed for the US could bring cold winds and low temperatures this week, making January the coldest month in over a decade. According to the National Weather Service, the arctic ...

These conditions are all thanks to a familiar sounding occurrence: the polar vortex, a large area of low pressure and cold air that surrounds the Earth's poles. The "vortex" is the counterclockwise ...

The polar vortex can be a powerful source of winter weather, but it's not the only cause of severe cold and snow in regions better known for warmth and sunshine. The Gulf Coast states are still ...