According to the National Weather Service, a polar vortex will impact most of the country this weekend, here is what you need ...

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

Extreme cold and snow smacked the Gulf Coast states this week, but the polar vortex may not be to blame.

Nearly 300M Americans face an arctic blast with sub-zero wind chills, heavy snow, and record-low temperatures ahead ...