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

Cold air originating from the Arctic Ocean was dislodged earlier this week and spilled south across the United States. As a ...

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

Ushering in the polar vortex is a winter storm, which was tracking from the Midwest toward the East Coast on Saturday. In ...

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

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

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

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

The mother and child were swept away Saturday night in Kentucky's Bonnieville community, Hart County Coroner Tony Roberts said. In southeastern Kentucky, a 73-year-old man was found dead in ...

This winter so far is the coldest since 2017-18 and the past 30 days, in particular, have been noticeably cold.