The polar jet stream, which is affected by the polar vortex above it, has become quite wavy, allowing Arctic air to ...

A coastal storm brewing just offshore threatens to dust snow from the Deep South to New England this weekend, as Arctic air ...

A polar vortex full of freezing air from Canada is about to bring a massive chill to millions across 30 states throughout ...

Another push of arctic air is expected to dive out of Canada and unleash a big freeze to millions of Americans in the Eastern ...

Severe winter chill is expected to plunge central and eastern states into below average temperatures as the polar vortex ...

The press secretary is disqualifying a veteran reporter from sitting in a press room that the administration has opened to ...

Cold temperatures are expected to last through the end of the month — and forecasters say that there's a potential for snow ...

Ben Gelber, a meteorologist for NBC4 in Columbus, Ohio, and a Pocono native, said the polar vortex is a large, circular pool ...

A shift in the weather pattern will open the door for several storms later in the month that could deliver snow and ice ...

A significant portion of the U.S. is experiencing below-average temperatures due to a disrupted polar vortex, affecting over ...