Harsh weather moved west as a polar vortex was expected to grip the Rockies and the northern Plains after winter storms pummeled the eastern U.S. over the weekend, killing at least 10 people, includin ...

The polar vortex, as explained by the National Weather Service, is a large area of low pressure and cold air that encircles the Earth’s poles. Even though it’s often framed in the media as a weather ...

The polar vortex has returned to the U.S., and frostbite-inducing temperatures are blasting millions of Americans.

The National Weather Service has issued extreme cold warnings for millions of Americans from the Canadian border to Texas.

As a polar vortex has kept Lawrence in its grip, the city’s Homeless Solutions Division says it has been able to provide ...

The East Coast is hit by another snowstorm causing accidents in areas unaccustomed to these extreme conditions.

A mass of Arctic air plunging into the Coastal Bend will leave us shivering through Saturday. Is this normal for this time of ...

The polar vortex hit much of America, making temperatures in North Dakota colder than on Mars. Despite this, a 90-degree warmup is forecasted for next week. This unusual weather pattern is linked to ...

The polar vortex’s icy grip on much of America has Arctic Greenland seeming like a toasty vacation spot by comparison.

"An Arctic air mass is expected to plunge into the Central U.S. this week, with high confidence for widespread, ...

Officials urged residents to stay off the roads in portions of Virginia and North Carolina where a storm dropped heavy snow ...

The easy answer is a deep southward dip in the polar jet stream that typically rings the globe at higher latitudes but is ...