A rare weather phenomenon that hasn't occurred since 1968 is expected to plunge temperatures across parts of the United ...

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

The phrase "polar vortex" has captured public attention and is now often misused to describe short-term bouts of frigid ...

A rare weather phenomenon that hasn't occurred since 1968 could soon impact the U.S., plummeting temperatures nationwide.

In a new outlook from the National Weather Service, the Chicago area appears to be in for a potentially "active" start to ...

This winter will be marked by a La Niña event, warmer North Pacific waters, and an undulating polar vortex where cold air ...

A storm system could put a damper for travel plans for many this Thanksgiving. Here's the latest forecast for South Carolina ...

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

The phenomenon, known as a sudden stratospheric warming, it's "the largest type of disruption that occurs to the polar vortex ...

But across the country, AccuWeather meteorologists are predicting major travel disruptions as a storm system is set to batter ...

"It’s expected to get much colder in the Chicago region around and after the Thanksgiving holiday," NBC 5 Storm Team ...

The culprit behind the country’s somewhat wacky weather, or at least part of it, is the (aforementioned) probable sudden ...