A harsh drop in temperatures is being delivered to the eastern two thirds of the U.S. thanks to a polar vortex dipping down ...

Meteorologists forecast an over 20-degree drop in temperature below normal across the Eastern United States, and freezing ...

The term "polar vortex" has been a "rising star" in recent years, according to the National Oceanic and Atmospheric Administration's polar vortex blog. It's such a star, in fact, that a viral image ...

Following more wintry weather from storms this weekend in the Midwest and Northeast, warmth will build and expand over the central and eastern United States this week. However, Accuweather's ...

The polar vortex is coming back. After a half-month hiatus, frigid air will again surge across the United States beginning this weekend through next week, as the unusually cold blob of air dips ...

Winter Storm Blair, named by the Weather Channel, is expected to bring heavy snow, sleet, freezing rain and ice to parts of the central United States this weekend before moving into the mid-Atlantic ...