High above the North Pole, in a slice of atmosphere rarely noticed and even less understood, a transformation is underway.

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

Dense fog shrouded the Alabama Gulf Coast on Thursday, November 20, reducing visibility to one nautical mile or less, ...

Drivers navigated flooded roadways across northern Texas early Thursday, November 20, after the National Weather Service (NWS ...

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

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

The cold temperatures — which might not reach Long Island — would be caused by a disruption in the polar vortex above the ...

Temperatures could turn colder in Connecticut after Thanksgiving thanks to sudden stratospheric warming. Here's what that ...

NBC 5 Storm Team Meteorologist Kevin Jeanes took a look at what’s going on and what the weather may look like going into ...

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

National Oceanic and Atmospheric Administration data shows snow has already appeared across much of the northern U.S. and the ...