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

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

The term “polar vortex” usually refers to the gigantic circular upper air weather pattern in the Arctic region. It is a ...

The sudden winter chill came thanks to the polar vortex, an area of low pressure and cold air in the Arctic near the North Pole, that has taken hold over parts of the country, meteorologists say.

An Arctic blast tied in part to the polar vortex is driving record frigid air south from the Northern Plains toward the Gulf ...

The polar vortex is not synonymous with cold snaps, but when it slides toward the United States, the polar jet stream can ...

The polar vortex might be considered the jet stream’s upstairs neighbor in the wintertime. It appears in September, when a seasonal lack of sunlight begins to make it cooler inside the Arctic ...

After a winter storm brings snow, ice to several states, Mississippi will see Arctic air from the polar vortex for a few days ...