According to the National Weather Service, a polar vortex will impact most of the country this weekend, here is what you need to know.

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 ...

A polar vortex could bring the coldest January the U.S. has faced in years. National Weather Service experts told Newsweek that Americans can expect a colder-than-average start to the new year. So ...

Bundle up and prepare: People living "basically anywhere from the Rockies eastward" will see extremely cold temperatures over the next several days, a meteorologist says.

During the winter, in the northern hemisphere, the polar vortex will expand and send cold air southward, according to the U.S. National Weather Service.

Different weather forces in the Arctic are combining to push the chilly air that usually stays near the North Pole not just into the United States, but also Europe.

As clarified by the National Weather Service, the term “vortex” refers to the counter-clockwise flow of winds that bottle up the arctic air and keep it near the poles.

And what is a polar vortex anyways? Here's what to know. What is a polar vortex? A polar vortex is a low pressure area where air swirls counterclockwise keeping it parked in polar regions.

The deadly cold front was tied to a misshapen Arctic polar vortex. In the winter, this mass of air swirling above the North Pole can push deadly winter weather into southern latitudes.

The National Weather Service (NWS) previously forecast a high likelihood of Florida experiencing below-average temperatures this January.

These conditions are all thanks to a familiar sounding occurrence: the polar vortex, a large area of low pressure and cold air that surrounds the Earth's poles.

The polar vortex is frequently discussed during the winter months, as it can bring bone-chilling temperatures to much of the lower 48 states.