The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...
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 ...
A recent study explains how warmer temperatures at the top of the planet destabilize the jet stream and allow colder air to ...
Much of the U.S. is being blasted by ice, snow and wind, as the polar vortex that dipped south over the weekend is ...
Most of the nation is in good shape on Wednesday and will be warmer on Thursday. The arctic air is coming, but not yet. The ...