A rare "daughter polar vortex" is set to plunge millions of Americans into freezing temperatures as a prolonged period of ...

Forecasters have warned that a rare weather event in the form of a polar vortex will bring snow and ice to millions as it ...

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 ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

Most of the US will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send temperatures tumbling below freezing for most of the nation starting this ...

Editor's Note for Sat. Jan. 18: A polar vortex is set to impact much of the US. Click here for the latest update. A polar vortex is forecasted to blanket most of the continental United States in ...

Sub-freezing temperatures can extend as far south as the Gulf Coast and Florida Peninsula in the US. The polar vortex spins anticlockwise around the North Pole with wind speeds of about 155mph ...

Here's how the polar vortex, and climate change, influence extremely cold winter weather in the US. Intense snowy wintry weather in the US has been fuelled by activity of the polar vortex ...

Much 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 its frig ...

A blast of arctic air from Canada has brought the season's coldest weather to most of the United States. The system, known as a polar vortex, is forecast to bring subzero temperatures to the ...