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 ...

Meteorologists are observing the beginnings of a polar vortex in much of the U.S. But how does this impact Thanksgiving day ...

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

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

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

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

But across the country, AccuWeather meteorologists are predicting major travel disruptions as a storm system is set to batter much of the western United States and Midwest with heavy snow and cold ...

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

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 ...