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

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

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

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 ...

A wide swath of the western U.S. may be in for below-average temperatures as forecasts suggest an Arctic blast is looming.

A significant change in the atmosphere means the weeks after Thanksgiving could be colder and snowier than normal across ...

Another Arctic blast is on the move toward the U.S., bringing the potential for bitter cold and heavy snow accumulations to Michigan.

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.

A weakening of the polar vortex and storms could cause travel hiccups around the country. Here's what to expect in New ...