When the polar vortex stretches, North America feels the chill. New research reveals some of the stratospheric patterns ...

Cold air breezes over North America as a result of two new patterns identified in the stratospheric polar vortex, countering ...

The Polar Vortex,an atmospheric phenomenon that shapes our winter weather,has been gaining attention as it undergoes changes ...

Three factors are combining to increase the likelihood of a weaker polar vortex this winter, the website reports. And a ...

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, ...

Even in a warming climate, brutal cold snaps still hammer parts of the U.S., and a new study uncovers why. High above the ...

The mechanism involves atmospheric waves that bounce between the upper atmosphere and ground level, amplifying weather ...

The polar vortex – everyone's favorite wintertime whipping boy – is actually a gigantic, circular area of cold air high up in the atmosphere that typically spins over the North Pole ...

The polar vortex split will help cause temperatures to plummet and potentially set the stage for some snowstorms. A recent strong "sudden stratospheric warming" event has caused the vortex to weaken.

How a predicted polar-vortex disruption could spur winter’s revenge. Forecasters are watching changes in the stratosphere that may trigger a shake-up in the mild weather pattern over the Eastern ...

In a year without much winter weather, there’s a chance of a bitter blow before spring takes hold. Experts say a disruption of the polar vortex could unleash cold, stormy conditions to the ...