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 ...

These type of polar vortex disruptions — stretching or moving entirely out of the North Pole — are happening more frequently, ...