It’s really, really cold again – as the US shivers through at least the eighth blast of air from the Arctic this winter. Here ...

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

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

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

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

WASHINGTON—The polar vortex hit its peak across much of America on February 19, with an icy grip that made Arctic Greenland seem like a toasty vacation spot in comparison. Even Mars has been warmer ...

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

BISMARCK, N.D. — Harsh cold descended on the nation’s midsection Monday as a polar vortex gripped the Rockies ... border to Oklahoma and central Texas, where the Arctic front was expected ...

The polar vortex — which normally traps frigid air ... time since October to bring the chill as far south as southern Texas, Cohen said. On top of that, high pressure and warm weather in ...

BISMARCK, N.D. — Harsh cold descend on the nation’s midsection Monday as a polar vortex gripped the Rockies ... border to Oklahoma and central Texas, where the Arctic front was expected ...

Forecasters say wind chills could hit -50 near the Canadian border over the next couple of days and below zero in parts of Texas ... The term "polar vortex" usually refers to the gigantic circular ...