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.

A harsh drop in temperatures is being delivered to the eastern two thirds of the country thanks to a polar vortex dipping ...

A potential polar vortex on the way means temperatures are going to tumble and electric bills are going to surge once ...

Next week’s pre-winter arctic plunge might be a sign of things to come for the Eastern U.S., as several key weather patterns ...

New York City could see its first snow of the season on Tuesday as a powerful polar vortex sweeps across the eastern half of ...

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

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.

A possible wobble in the polar vortex could soon push frigid air into the northern U.S., and Ohio could see more arctic air around Thanksgiving.

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.

The big winter (and popular) topic is dusted off very early this season as frigid air plunges south for Veterans' Day. But ...

The odds of extreme cold this winter in the US, Asia, and parts of Europe are climbing, threatening to boost energy bills for ...

Swaths of central and eastern states have received much less snow than average over the past five winters – a trend that may ...