Ranked dead last, or perhaps not mentioned at all, would probably be the only state that sits partly within the Arctic Circle ...

A strong polar vortex in the stratosphere has brought subzero temperatures to the Midwest, Mid-Atlantic and deep into the ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...

With last week's freeze being the second time temperatures dipped below freezing this winter, many are wondering if this ...

A dangerous and potentially life-threatening stretch of cold weather has much of the U.S. on alert as a lobe of the polar vortex invades the nation ... the ceremony will be held inside the United ...

A series of cold fronts the last few weeks has kept Florida downright chilly, as another winter storm starts to take aim this ...

Click here for the latest update. A polar vortex is forecasted to blanket most of the continental United States in the coming week, with parts of the Deep South expected to see freezing temperatures.

Americans were bracing Thursday for frigid temperatures that forecasters said could produce life-threatening conditions, with ...

Jan 17 (Reuters) - A blast of Arctic air is set to cover much of the United States with temperatures ... will be due to a phenomenon called a polar vortex, an upper-level jet stream that typically ...

A series of disturbances in the atmosphere is sending the polar vortex south (again) next week with a burst of even colder ...

Polar Vortex Set to Envelop Much of US in Freezing Temperatures By Hannah Lang and Brendan O'Brien (Reuters) - A blast of Arctic air is set to cover much of the United States with temperatures ...