Some experts say the Frigid air that normally stays trapped in the Arctic escaping is happening more frequently because of a ...

The storm moved from the Rockies through the Central Plains, Ohio Valley and mid-Atlantic before exiting the U.S. Data from ...

The next round of bitter cold was set to envelop the southern U.S. on Tuesday, after the first significant winter storm of ...

A huge swath of the U.S. is being blasted by ice, snow and wind, as the polar vortex that dipped south over the weekend is keeping an area stretching from the Rocky Mountains to the coast of Maine in ...