A lobe of the polar vortex, a ring of freezing air typically found near the ... Because of a trend toward a more southerly ...

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

The annual explosion of cherry blossoms along the Tidal Basin frames the Washington Monument in the distance, Thursday, April ...

The polar vortex has taken on an unexpected pattern this winter - one that’s made part of the United States the most ...

PHOTOS: 'Life-threatening cold' expected as polar vortex stretches across U.S. after ... of the Rocky Mountains stretching from Colorado to Washington state, with the danger rated highest in ...

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

Harsh weather moved west on Monday as a polar vortex was expected to grip the ... of the Rocky Mountains stretching from Colorado to Washington state, with the danger rated highest in Utah.

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

Harsh weather moved west on Monday as a polar vortex was expected to grip the Rockies and the ... issued for numerous areas of the Rocky Mountains stretching from Colorado to Washington state, with ...

BISMARCK, N.D. — Harsh cold descend on the nation’s midsection Monday as a polar vortex gripped the Rockies ... Idaho and Wyoming. The Mount Washington Avalanche Center issued an avalanche ...

Harsh weather moved west on Monday as a polar vortex was expected to grip the ... of the Rocky Mountains stretching from Colorado to Washington state, with the danger rated highest in Utah.Part ...