Since the Ice Ages, the Polar Vortex has acted as a climatic gatekeeper. When breached, it unleashes freezing air into regions unprepared for it. This decade, those breaches are becoming more frequent ...

Data from a polar vortex splitting during 2002’s Southern Hemisphere sudden warming event helps expand models to accommodate ...

The cause of the week-long deep freeze? A polar vortex collapse. Now, meteorologists are calling for another collapse in the middle of March, one that could plunge the U.S., Canada, and parts of ...

The Midwest has all but shut down amid subzero temperatures, howling winds and snow. Transportation has slowed, mail in ...

Damond Benningfield A somewhat alarming new phrase entered the American lexicon when parts of the United States were plunged into an especially bitter deep freeze in January 2014: “polar vortex.” ...

The polar vortex will bring the coldest air we have seen in at least two years to the Great Lakes all the way down to Florida. Wind chills early next week will be as low as -20 or greater.

Weather patterns this month are being shaped by the collapse in March of a band of high-altitude winds known as the polar vortex. That occurred earlier than usual this year, triggering a ...