Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, researchers found that two specific patterns in the polar vortex, a ...

Two newly identified patterns in the stratospheric polar vortex can send cold air over North America to cause extreme cold snaps, but the parts of the country that suffer differ between them ...

As these patterns continue evolving, Americans from Seattle to Syracuse need awareness of how shifting polar vortex behavior affects their winter weather expectations.

Accuweather May snow, spring polar vortex to shock many U.S. cities in developing weather pattern An unusually chilly spring is about to turn even more shocking in the Northeast. 00:00 01:08 ...