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

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 vortex brings frigid temperatures and a light chance of snow Friday. High winds could become dangerous combined with ...

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 ...

A “polar vortex” is one of those weather terms that gets thrown around during winter outbreaks, but Bishop said it’s something that is always there. Sometimes it can send cold air further south than ...

A polar air mass from Canada is hovering over Wisconsin on Thursday, Dec. 4, bringing single-digit temperatures and negative wind chills.

Parts of the Upper Midwest and Northern Plains are already feeling the effects of air spilling in from Canada. On Thursday, ...

For folks who long for cold, the weeks after Thanksgiving might just be a tease for some intense Arctic cold that could ...

A rare atmospheric collision is poised to deliver unprecedented Arctic air across North America in December 2025. On November ...

Such events distort the polar vortex, which causes Arctic air to descend into the U.S. and causes temperatures to plummet.

High above the North Pole, about 10 to 30 miles above Earth’s surface, sits a massive whirlpool of icy air known as the polar ...