A powerful Arctic outbreak tied in part to the polar vortex is set to send temperatures by next week tumbling down to as cold as 25 to 35 degrees Fahrenheit below average for mid-January ...

Polar vortex: Arctic plunge to bring another cold blast to Cincinnati We've already fallen as low as 1° this year. Another dip in the polar vortex makes that possible for Cincinnati again next week.

Despite a warming climate, bone-chilling winter cold can grip parts of the U.S. In a study appearing in Science Advances, ...

Cold air from the arctic sometimes dips southward across the American plains. What to know about the polar vortex.

Tuesday morning will be cold enough to delay the start of school for some districts on the Front Range.

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

NPR's Leila Fadel speaks with Axios senior climate reporter Andrew Freedman about the incoming Arctic blast that's expected to bring dangerously cold temperatures to large parts of the U.S.

An arctic blast will send temperatures across the United States plummeting as bitterly cold air that originated in Siberia will arrive from Canada by week’s end, bringing with it dangerously ...

NPR's Leila Fadel speaks with Axios senior climate reporter Andrew Freedman about the incoming Arctic blast that's expected to bring dangerously cold temperatures to large parts of the U.S.