An unseasonably fierce polar vortex is sweeping across the United States, thrusting nearly twenty states into a deep freeze ...

A sudden, dramatic shift in temperatures high in the atmosphere will dance with the La Niña weather pattern. There won't be a clear winner.

Wisconsin is in store for a warmer weekend, but could see a return of Arctic air around Thanksgiving as models suggest weakening in the polar vortex.

The Polar Vortex serves as a powerful barrier that confines cold air within the polar regions. When this barrier weakens, frigid air can escape into mid-latitude areas, leading to severe winter ...

A rare atmospheric shake-up could bring another round of major cold and stormy weather across the United States and Europe.

As winter approaches, a significant meteorological phenomenon is on the horizon: an early Sudden Stratospheric Warming (SSW) event is expected to disrupt the Polar Vortex. This disruption will likely ...

The polar vortex shot into public lexicon sometime around January 2014, after a notable outbreak of icy arctic air that ...

Temperatures are getting colder, but the First Alert StormTeam is saying the region is about to see something that hasn’t ...

Brace yourselves; winter is coming. "Polar vortex" may have been the weather catchphrase of last winter, but it's coming back and it's bringing snow and freezing temperatures along with it. While it ...

Hagers-Town Town and Country Almanack weather prognosticator Chad Merrill provides his prediction for how much snow the Hagerstown area will get.

Michigan could see a return of Arctic air around Thanksgiving as models suggest a possible wobble in the polar vortex, which could push frigid air into the northern U.S.