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

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

A disturbance in the polar vortex could spill icy cold air south into the United States much earlier than usual, the National ...

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

This weather event may not be constant, but there will be cold waves over multiple days with single-day warmups mixed in.

A rare weather phenomenon that hasn't occurred since 1968 is expected to plunge temperatures across parts of the United States.

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

Although a major winter outbreak is not guaranteed, forecasters are watching for below-average temperatures to develop in the ...

Brace yourselves; winter is coming. "Polar vortex" may have been the weather catchphrase of last winter, but it's coming back and it's bringing snow and freezing temperatures along with it. While it ...

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

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

Snow for Thanksgiving? An Arctic blast is on the move toward the U.S. bringing the potential for bitter cold and heavy snow ...