The coldest weather of the season to date will be due to a phenomenon called a polar vortex, an upper-level jet stream that ...

Louisiana is forecasted to have a potential winter storm bringing a surge of cold air late Sunday into early next week.

Florida's manatee population is seeking warmer waters due to a polar vortex, with many gathering near power plants. The species is still recovering from a mass starvation event.

Why herds of manatees are huddling in water near America's power plants - A polar vortex that has hit much of the U.S. in a ...

The nine are wanted for either sexual-related crimes — several against children — or homicide and many were last known to be ...

Most of the U.S. will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send ...

A polar vortex is slated to sweep most of the continental US bringing winter storm warnings and a hazardous freeze to ...

A new blast of Arctic air sweeping from north to south will bring bone-chilling temperatures to millions of Americans this weekend and next week.

A disruption in the polar vortex is about to send an Arctic air mass from Siberia as far south as Florida. Yes, Siberia—and ...

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously ...