Definition: The polar vortex is a flow of wind aloft that is always present above the cold, North and South Pole areas. In the Northern Hemisphere this results in a counter-clockwise flow of air ...

DAYTON, Ohio (WDTN) ... When there are disturbances in the polar vortex, mixing of the stratosphere and troposphere can get that air closer to the surface.

Three factors are combining to increase the likelihood of a weaker polar vortex this winter, the website reports. And a ...

Up next: another visit from the polar vortex. An Arctic air mass plunges into the Lower 48 next week. This brings the potential for multiple nights with subzero wind chills in the Ohio Valley.

Polar vortex set to envelop much of US in freezing temperatures. Hannah Lang and Brendan O'Brien. ... Ohio Valley, mid-Atlantic and the Northeast as we get into early to mid-next week," he said.

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NORFOLK, Va. (AP) — The plunging polar vortex brought subfreezing temperatures Tuesday to some of the southernmost points of the U.S., threatening to dump snow Read More Skip to content ...

The polar vortex of ultra-cold air usually spins ... storm is expected to make for slick roads Friday as 75,000 fans head to AT&T Stadium in Arlington to watch Texas play Ohio State in the ...

LOUISVILLE, Ky. — Harsh cold descended on the nation's midsection Monday as a polar vortex gripped the Rockies and Northern Plains on the heels of weekend storms that pummeled the Eastern U.S ...

The polar vortex of ultra-cold air usually spins around the North Pole, ... And the snow and ice in the central Plains through the Ohio Valley into the Atlantic is likely to linger for a few ...

LOUISVILLE, Ky. — Harsh cold descended on the nation's midsection Monday as a polar vortex gripped the Rockies and Northern Plains on the heels of weekend storms that pummeled the Eastern U.S ...

The polar vortex of ultra-cold air usually spins ... The storm is expected to make for slick roads Friday as 75,000 fans head to AT&T Stadium in Arlington to see Texas play Ohio State in the ...