The polar vortex, a mass of cold air over the Arctic, is beginning its seasonal strengthening. A strong polar vortex typically keeps the coldest air locked near the North Pole. A weaker or wobbling ...

The mean first frost in the Providence is Oct. 23, but that varies by town. See the cities and towns the National Weather ...

Fall may have only just arrived, but we know many in our region are already looking ahead to what winter may bring us. Our ...

The polar vortex is a broad, fast ribbon of cold air that encapsulates the Arctic high in the stratosphere. Stable, it confines cold air near the North Pole. Unstable, it is rocked and stretched out ...

During the winter the polar vortex spreads out, shooting cold air southward. Here's what to know as we head into the cooler months in South Carolina.

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 ...

Indiana can expect dry temperatures around the state at the beginning of October. Although fall kicked off earlier this week, it'll be a little while before we are affected by a polar vortex. Hoosiers ...

The Earth's polar vortex is strengthening, signaling a gradual cooling and a more active storm track across the northern U.S. North Carolina's first freeze typically occurs between late October and ...

Bitingly cold Arctic air keeps pummeling the U.S. with ruthless cold snaps—despite warming winters nationwide. A study explains why: the solution lies far above your head, in the upper atmosphere ...