Heavy snow is expected to blanket large portions of the Eastern U.S. while much of the country will endure dangerously cold ...

a meteorologist with the National Weather Service in College Park, Maryland. He added that about 170 million people from the ...

Around 40 million people, primarily across the southern U.S. from Texas to Florida, were under some type of weather hazard.

Frigid temperatures engulfed the South on Monday ahead of a winter storm that’s expected to spread heavy snow and disruptive ...

Officials canceled the parade because of the freezing temperatures expected to blast the Baltimore area in the days ahead.

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into ...

The coldest air of the season will sweep into the province this weekend, courtesy of a polar vortex. It has been a relatively mild winter so far, so this drop in temperature will surely feel like ...

The polar vortex will engulf much of North America as we head into next week, with temperatures dipping down into the -20s and -30s in some Canadian provinces. Even states like the Carolinas, Georgia, ...

When this stratospheric vortex becomes disrupted or stretched, it can distort the jet stream as well, pushing it southward in some areas and causing cold air outbreaks. The Arctic polar vortex is ...

These conditions are all thanks to a familiar sounding occurrence: the polar vortex, a large area of low pressure and cold air that surrounds the Earth's poles. The "vortex" is the counterclockwise ...