The polar vortex is a large area of cold, spinning air that sits near the North Pole and exists year-round. When it weakens or shifts, Arctic air can spill south, increasing the risk of snow and ...

CHICOPEE, Mass. (WWLP) – Scientists are investigating whether a warming Arctic is changing the behavior of the polar vortex, a natural atmospheric phenomenon responsible for recent waves of intense ...

Florida has experienced an unusually cold winter with multiple Arctic blasts due to a weakened polar vortex. Another major, widespread freeze in Florida is unlikely for the remainder of the winter ...

Hello, world? Can I come out of hibernation yet? Folks in the central and eastern United States who've endured weeks of bitter cold and snow are wondering: Is winter over? Will the polar vortex come ...

After sending temperatures plunging across Michigan this winter, the polar vortex has retreated. As if we hadn't noticed. "We are actually on the opposite side of it, on the warmer side," said Jaclyn ...

Georgia is ending the week on a warm and humid note, with temperatures climbing near record daily highs Thursday and Friday. Forecasters say the unseasonable warmth is being fueled by a strong ...