As the National Weather Service explains, the polar vortex is an area of low pressure and cold air that exists over both of ...

Harsh weather moved west on Monday as a polar vortex was expected to grip the Rockies and the northern Plains after winter storms pummeled the eastern U.S. over the weekend, killing at least 10 people ...

A polar vortex collapse is expected over the next two weeks, causing extreme winter weather and travel disruption across North America. The weather phenomenon is expected to develop in mid-March, ...

As dramatic as this sounds, the vortex was in contact with the ground only about a minute and no damage occurred. The tornado was classified as a land spout tornado, which is a brief spin-up of ...

After this, “cold air then descends very rapidly in the polar vortex and this causes the temperature ... warming effect is not noticeable on the ground. The SSW will sometimes cause the jet ...

January and February have been colder than normal in Rochester this year One reason its so cold in Rochester is a distortion in the polar vortex Other ... lingered on the ground amid the cold ...

South of the Arctic’s polar vortex is the jet stream, a river of west to east air that flows five to nine miles above ground, and helps keep the pole’s cold air confined to the Arctic.