Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.

Moreover, the latest data suggests that the Polar Vortex is on the verge of a significant disruption due to a new SSW event. The disruption is expected to lead to a colder pattern across the United ...

When the polar vortex stumbles, the weather at ground level can pivot from mild to brutal in a matter of days. A circulation that usually spins quietly above the pole can suddenly send lobes of Arctic ...

A polar vortex is set to bring weeks of icy temperatures to the Lower Hudson Valley and New York City. “This could end up being the coldest January since 2011 for the U.S. as a whole,” said ...

Early holiday outlooks are in—and they’re compelling. The headline is a strong polar vortex core anchored over North America, influencing weather on both sides of the Atlantic and boosting the chances ...