Nikki Nolan is a meteorologist for CBS News and Stations. She graduated from Metropolitan State University of Denver with a Bachelor of Science degree in Meteorology and has worked in national weather ...

Millions of people across the U.S. will experience subzero or below-average temperatures in the coming days as a polar vortex ...

A powerful polar vortex is set to grip much of the United States next week, as seen on a map, with meteorologists predicting ...

A harsh drop in temperatures is being delivered to the eastern two thirds of the country thanks to a polar vortex dipping down from the Arctic. Record cold high temperatures on Monday and Tuesday are ...

Baby, it’s cold outside, and it’s about to get even colder for much of the United States. A polar vortex of brutally cold air that normally circles the Arctic will be spilling southward, starting this ...

Most of the holidays may be over, but winter is sticking around — and it's bringing freezing weather to Texas next week. A polar vortex, a weather pattern similar to the historic winter storm that ...

A lobe of the Polar Vortex is going to swing through Ontario just north of Michigan. The upper-air forecast gives us an easy look at this strong winter player. The general meaning of the Polar Vortex ...