In 2014, the term “polar vortex” burst on the scene across Canada and the U.S. as temperatures plunged. In some places, it ...

The US National Weather Service warns that La Niña, the MJO and a rare Sudden Stratospheric Warming could bring winter-like ...

The polar vortex could be disturbed in a way that hasn't happened this early in 25 years. You’d be forgiven for being ...

But across the country, AccuWeather meteorologists are predicting major travel disruptions as a storm system is set to batter ...

Forecasters are expecting a weakened polar vortex to bring cold air after Thanksgiving. An uncommon occurrence at this time ...

Thanksgiving is less than a week away which means the fall season is ending. With it comes colder temperatures from an ...

A rare stratospheric event is forecast to unleash bone-chilling air from a weakening vortex across the US and New England, ...

Thanksgiving is forecast to be colder and snowier than usual across large swathes of the U.S., threatening to snarl what the ...

Over the next 10 days, scientists say, changes in the stratosphere will upend weather patterns and set the stage for a cold, snowy December across parts of the Northern Hemisphere.

The polar vortex is weakening, which means New England is in for a colder than usual December, with episodic cold snaps.

The phrase "polar vortex" has captured public attention and is now often misused to describe short-term bouts of frigid ...

There may be a disruption to the polar vortex due to an unusually early Sudden Stratospheric Warming event. Judah Cohen, a ...