The Pacific Ocean along the equator is where a phenomenon called La Niña develops. La Niña is the “cool sister” to El Niño.

The forecast released Oct. 16 predicts where above- or below-normal temperatures and above- or below-normal precipitation are ...

A cold winter is in store for those in the northern U.S., with milder temperatures across the southern tier, according to NOAA’s National Weather Service winter outlook.

Get your heavy coats, ice scrapers and snow shovels ready, because the start of winter is just a few weeks away, and it could be a stormy season for parts of the United States. "It can be an intense ...

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

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 ...

The Earth's polar vortex is stirring up, bringing the first hints at changing weather as fall descends on the U.S. This movement means gradual cooling and a more active storm track across the northern ...

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 ...

The polar vortex is stirring up, bringing the earliest hints that the weather is changing as autumn has officially arrived. In the short term, this means gradual cool-downs and a more active storm ...