A severe winter storm that brought freezing rain, sleet and snow to a large part of the U.S. was intensified by the polar ...

Tens of millions of people are in the path of a major winter storm. Federal cuts threaten efforts to understand the causes of such weather.

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march ...

Add Yahoo as a preferred source to see more of our stories on Google. The polar vortex will engulf much of North America as we head into next week, with temperatures dipping down into the -20s and ...

With over 170 million Americans facing below-average temperatures, even colder air may be on the horizon thanks to the displacement of the polar vortex that will lock in the feel of winter and park ...

A polar vortex could bring the coldest January the U.S. has faced in years. National Weather Service experts told Newsweek that Americans can expect a colder-than-average start to the new year. So far ...