The polar vortex is beginning its seasonal strengthening, signaling a gradual shift toward cooler weather. Frost advisories were issued in parts of the Great Lakes region, New York, and New England as ...

The polar vortex is making a return to the forecast, but the counterintuitive weather feature is nothing to fear.

CLEVELAND — High above the Arctic, swirling like a giant icy crown, the polar vortex is a permanent feature of our atmosphere ...

Temperatures are staying relatively warm throughout Illinois this week, despite fall officially starting Sept. 21. But residents in the state know that when the cold kicks off in Illinois, it comes ...

The Earth's polar vortex is stirring up, bringing the first hints of changing weather as the autumn foliage starts to turn and the temperatures begin to drop. The movement means gradual cooling and a ...