New York City could see its first snow of the season on Tuesday as a powerful polar vortex sweeps across the eastern half of ...

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

The Polar Vortex serves as a powerful barrier that confines cold air within the polar regions. When this barrier weakens, frigid air can escape into mid-latitude areas, leading to severe winter ...

The forecast calls for cold weather across the central and eastern U.S., with temperatures 10-15 degrees below average, ...

In an early sign of the winter weather that's coming, the dreaded polar vortex is making news yet again. The polar vortex is "ramping up from its summer slumber," said meteorologist Judah Cohen in an ...

The polar vortex is stirring up, bringing the earliest hints that the weather is changing as autumn has officially arrived. In the short term, this means gradual cool-downs and a more active storm ...

The polar vortex is stirring up, bringing the earliest hints that the seasons are changing. That shift is most noticeable in northern Wisconsin, where a frost advisory was in effect early Monday, Sept ...

The Earth's polar vortex is strengthening, signaling a gradual cooling and a more active storm track across the northern U.S. North Carolina's first freeze typically occurs between late October and ...

The polar vortex, a mass of cold air over the Arctic, is beginning its seasonal strengthening. A strong polar vortex typically keeps the coldest air locked near the North Pole. A weaker or wobbling ...