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

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

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

Polar vortex is not a synonym for “cold snap,” according to the Polar Vortex Blog at Climate.gov, and it’s not the only weather pattern to blame for blasts of cold air.

Polar vortex is not a synonym for “cold snap,” according to the Polar Vortex Blog at Climate.gov, and it’s not the only weather pattern to blame for blasts of cold air.

One thing is sure, the phrase "polar vortex" has captured public attention and is now often misused to describe short-term bouts of frigid weather, experts told USA TODAY. Polar vortex is not a ...