LOWELL, Mass. — Americans expecting the worst winter weather to slam the East Coast might need to look northwest instead. A major study spanning four decades reveals that severe winter storms are ...

Even in a warming climate, brutal cold snaps still hammer parts of the U.S., and a new study uncovers why. High above the Arctic, two distinct polar vortex patterns — both distorted and displaced — ...

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 ...

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 ...