A rare stratospheric event is forecast to unleash bone-chilling air from a weakening vortex across the US and New England, ...

Over the next 10 days, scientists say, changes in the stratosphere will upend weather patterns and set the stage for a cold, ...

The phrase "polar vortex" has captured public attention and is now often misused to describe short-term bouts of frigid ...

The polar vortex, a high-altitude ring of westerly winds that usually keeps Arctic air locked near the pole, is showing signs ...

Although a major winter outbreak is not guaranteed, forecasters are watching for below-average temperatures to develop in the ...

Another Arctic blast is on the move toward the U.S., bringing the potential for bitter cold and heavy snow accumulations to Michigan.

Another Arctic blast is on the move toward the U.S., bringing the potential for bitter cold and heavy snow accumulations to ...

The odds of extreme cold this winter in the US, Asia, and parts of Europe are climbing, threatening to boost energy bills for ...

Another Arctic blast is on the move toward the U.S., bringing the potential for bitter cold and heavy snow accumulations to ...

Winter isn't over just yet. A major shift in the weather pattern could have millions across the United States once again reaching for their winter coats later this month before milder springlike air ...

A sudden, dramatic shift in temperatures high in the atmosphere will dance with the La Niña weather pattern. There won't be a ...

A harsh drop in temperatures is being delivered to the eastern two thirds of the U.S. thanks to a polar vortex dipping down ...