Add Yahoo as a preferred source to see more of our stories on Google. Much of the country will be hit with extreme low temperatures over the next week as a polar vortex sends cold air down from the ...

Much of the country will be hit with extreme low temperatures over the next week as a polar vortex sends cold air down from the North Pole. Real feel temperatures throughout the northeast, including ...

A Polar Vortex brought temperatures so cold in January 2014 that it froze Niagara Falls. Signals of a rare sudden stratospheric warming in the next two weeks have some forecasting an imminent Arctic ...