The polar vortex of ultra-cold air usually spins around the North Pole, but it sometimes plunges south into the U.S., Europe ...

As overnight temperatures dip into the teens and 20s this week, Gov. Dan McKee’s administration on Monday night opened two ...

If you're braving the cold during the polar vortex that's skating across much of the US right now, you're probably looking ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

Temperatures plunged into the teens and single digits in some spots, and the snow-dusted winds are driving the wind chill ...

The United States continued to freeze through a polar vortex that brought rare cold to the southern United States and chances ...

A huge swath of the U.S. was blasted with ice, snow and wind on Monday as the polar vortex that dipped south over the weekend ...

Portland was forecasted to be about 6 degrees below normal Sunday and Monday, according to the National Weather Service.

The polar vortex is a low-pressure system of cold air that swirls above Earth’s poles. There’s one over the South Pole in ...