Frigid wind chills of -50 degrees and lower hit parts of the Midwest early this week – with some seeing high temperatures below 0 – all thanks to the polar vortex. But, what the heck is the polar ...

Extreme cold is set to grip much of the country starting this weekend with the return of the polar vortex. Some regions are expected to see temperatures in the negatives early next week. TODAY’s Al ...

This comes after record low temperatures were already set on Tuesday in New England. The Polar Vortex is a large, persistent area of low pressure and cold air near the poles and sits about 10-30 miles ...

The word "cold" doesn't even begin to describe what many people across the U.S. are experiencing this week. There’s currently a polar vortex ripping across the country, and it's bringing brutal winter ...

Frigid wind chills of -50 degrees and lower hit parts of the Midwest early this week – with some seeing high temperatures below 0 – all thanks to the polar vortex. But, what the heck is the polar ...

NEW YORK — Another round of bone-chilling air from the Polar Vortex could invade the central and northeastern U.s. this weekend and potentially produce the first significant snowstorm of the season ...