The tropospheric polar vortex is a normal feature that influences weather across the globe every winter, while 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.

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

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

The polar vortex is a large area of circulating cold air above the North Pole. Strong winds keep it contained, but when it ...

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.

Just when forecasters had predicted a La Niña winter season that could feature warmer temperatures in the northeast, another ...

Palm Beach International Airport recorded a low of 45 degrees for the morning of Nov. 11. How cold was other parts of Florida?

A meteorologist is warning Ontarians to prepare, as an extreme atmospheric warming event will be bringing severely cold ...