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 ...

In an early sign of the winter weather that's coming, the dreaded polar vortex is making news yet again. The polar vortex is "ramping up from its summer slumber," said meteorologist Judah Cohen in an ...

The polar vortex is stirring up, with winter weather advisories in Alaska and freeze warnings in New York signaling the first signs of the changing fall weather in the US. With New Jersey's apple ...

The polar vortex is stirring up, bringing the earliest hints that the weather is changing with the new fall season. In the short term, this means gradual cool-downs and a more active storm track ...

The polar vortex is beginning to stir, signaling a gradual shift toward cooler fall weather in the northern U.S. Tennessee is expected to see mild temperatures through December, with the average first ...