Add Yahoo as a preferred source to see more of our stories on Google. There is a major weather pattern change underway across the U.S. As we get into next week, the storm track looks really ...

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 swirling ...

Bitingly cold Arctic air keeps pummeling the U.S. with ruthless cold snaps—despite warming winters nationwide. A study explains why: the solution lies far above your head, in the upper atmosphere ...

A January thaw that brought widespread record warmth to the United States is coming to an end. It will be replaced by the familiar polar vortex pattern that caused below-average temperatures in the ...

A Polar Vortex brought temperatures so cold in January 2014 that it froze Niagara Falls. Signals of a rare sudden stratospheric warming in the next two weeks have some forecasting an imminent Arctic ...