Borchardt and Friedlein: “A polar vortex is a large low pressure system that is accompanied by arctic cold air that typically originates near the North Pole. Since the systems are so large, they ...

The Northeast is plunging into a deep freeze. Here’s what scientists know, and don’t know, about the role of rapid Arctic warming. Average temperature forecast for Feb. 3-5 95°F -50°F 32°F The polar ...

STATEN ISLAND, N.Y. — If you’ve been keeping a tab on winter forecasts, you’ve likely heard the term “polar vortex” and the potential impact it may have on the upcoming season. But exactly what is the ...

The vortex is strongest during the winter and usually weakens or even disappears in the summer. When the polar vortex weakens or even splits, it allows frigid air to escape and push southward toward ...

The polar vortex has only recently entered the popular lexicon as something to fear or shiver at each winter: But what is it? Is it a storm that's heading south from the Arctic or perhaps a new ...

With the bitter cold of winter descending upon the U.S., one may question what is responsible for this upcoming period of below-average temperatures. In short, the answer is the polar vortex. But what ...

Bitter cold is expected across much of the U.S. this weekend. But what do headlines mean when they say a "polar vortex cold snap" is on the way? The polar vortex is a regular feature of Earth's polar ...