An unusually strong disruption in the upper atmosphere is setting the stage for a winter pattern that could lock much of the ...

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

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

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.

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

According to meteorologists and climatologists, critical changes in two major atmospheric patterns—La Nina and the polar ...

A harsh drop in temperatures is being delivered to the eastern two thirds of the U.S. thanks to a polar vortex dipping down ...

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

A sudden, dramatic shift in temperatures high in the atmosphere will dance with the La Niña weather pattern. There won't be a clear winner.

The phenomenon, known as a sudden stratospheric warming, it's "the largest type of disruption that occurs to the polar vortex ...

A blast of polar vortex cold air is expected to hit parts of the country around Thanksgiving. What to expect in Tennessee.