Cities across the U.S. are bracing for cold temperatures as a polar vortex arrives, bringing temperatures down to much below ...

This blast of cold weather is due to activity of the polar vortex.

MINNEAPOLIS, Minnesota — Our entire region is under an Extreme Cold Weather Warning until 12 p.m. Tuesday; wind chills could fall as low as -45 degrees. This Arctic blast is thanks to a polar vortex.

Models aren’t clear on whether climate change is making polar vortex disruptions more common. Cohen notes that cold extremes have become more frequent since 2000, when the Arctic’s warming ...

The polar vortex is a large area of low pressure, winds, and cold air surrounding both of the Earth’s poles, according to the ...

A plausible scenario (ICON model) with this polar vortex episode may be stronger high pressure into Southeast pushing colder air further south. Too cold and dry for precipitation in Atlanta.

VIRGINIA BEACH, Va. — Looking ahead to next week, a major arctic blast is expected to settle into Hampton Roads and ...

Our long-range forecast models are continuing to pump in wind chill temperatures between -15° and 0° consistently each morning Monday through Wednesday. As noted earlier, the worst of the cold ...

Woullard went on to say that Entergy is already looking at predicted models for the storm and will make staffing decisions based on those models. He did say, however, early outlooks tend to change and ...

The polar vortex is expected to reach the Utah-Idaho ... blast of cold air is possible late next week. Johnson said some models indicate it would produce similar temperatures to those expected ...

"There are many things that can change the strength of the polar vortex," Butler says. Sea ice is one of them – some models suggest melting sea ice may have a weakening effect on the vortex.