The first of three rounds of bitter air has arrived, threatening record lows in cities from the Midwest to the Northeast.

The polar vortex is a large upper-level, low-pressure area or circulation that typically resides above the Arctic Circle.

The Pacific Northwest is expected to see up to seven inches of rain this week, as the eastern United States braces for arctic cold.

It is forecasted to be cold in the Bay State as a result of the breaking, or "displacement" of the polar vortex. According to ...

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

Arctic wind patterns create a sort of wall around the pole that prevents frigid air from trickling southward. That wall that ...

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

As we head into the polar vortex, meteorologists are calling for up to a foot of snow in some parts of the U.S.

The culprit behind the country’s somewhat wacky weather, or at least part of it, is the (aforementioned) probable sudden stratospheric warming event (SSW) disrupting the stratosphere’s polar vortex ...

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 ...

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

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