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

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

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

One new study identifies a 17 percent increase in the destructive potential of the strongest nor’easters, while another ...

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

A polar vortex is hitting most of the country in the next few days. What does it mean? How to protect yourself and pets ...

What is a polar vortex? The polar vortex is an area of swirling cold air in the Earth's polar regions. During winter, the polar vortex at the North Pole expands, sending cold air southward ...

Cohen and his co-authors suggest Arctic change favors more polar vortex disruptions, which can trigger more severe winter weather for weeks. Looking ahead several decades, the picture is more ...

The "polar vortex" is a large low-pressure system that lives around the Arctic Circle but occasionally can be split up and send extremely cold weather to lower latitudes like New York.