A "polar vortex" is one of those weather terms that gets thrown around during winter outbreaks, but Bishop said it's ...

Three rounds of cold Arctic air from a shifting polar vortex are expected to plunge much of the central and eastern U.S. into ...

The Upper Midwest and Northern Plains have been hit by Canada's freezing temperatures. On Thursday, Dec. 4, wind chills ...

Thanks to the polar vortex, the first half of December will bring multiple waves of Arctic air to the U.S. Here's what to ...

A polar air mass from Canada is hovering over Wisconsin on Tuesday, Dec. 3, bringing single-digit temperatures and negative ...

When you're expecting a polar vortex to hit, don't forget about the birds that are in your garden by keeping them safe during ...

Polar vortex disturbance is causing frigid Artic air to surge southward, bringing cold temperatures and possibly snow to many ...

Some light snow is possible across much of New Jersey on Friday night after an Arctic blast of much frigid air could ...

A rare stratospheric warming event high above the Arctic could disrupt the polar vortex and send colder air toward Texas in ...

A strong polar vortex doesn't cause cold weather — it does the opposite. Here's what to know about polar vortices, how they ...

A shifting polar vortex will send multiple rounds of Arctic air into the central and eastern United States through the first ...