The Polar Vortex,an atmospheric phenomenon that shapes our winter weather,has been gaining attention as it undergoes changes ...

Two newly identified patterns in the stratospheric polar vortex can send cold air over North America to cause extreme cold ...

Three factors are combining to increase the likelihood of a weaker polar vortex this winter, the website reports. And a ...

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, ...

Even in a warming climate, brutal cold snaps still hammer parts of the U.S., and a new study uncovers why. High above the ...

January is shaping up to be the coldest in a decade as the polar vortex dips south across the eastern half of the United States — shocking a nation that has enjoyed an unusually balmy end of the ...

Stratospheric polar vortex changes still trigger brutal U.S. winter cold snaps and extreme weather despite a warming climate.

Indications are the polar vortex is going to get wound up tight in the next week. This has a weather domino effect you might not expect.

The polar vortex is area of fast-moving winds well above the Earth’s surface and the jet stream that circle the Arctic during the Northern Hemisphere’s coldest months.

The polar vortex is aways around - it just normally stays near the North Pole. But when it descends into our area, get ready for really cold weather.

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

This polar vortex is a well-documented, long-existing pattern, but some scientists say climate change could be making it unstable, with potentially serious consequences.