"Bitter cold could linger through the end of the month," the Weather Prediction Center said in an update on Monday.

Major cities across the Northeast and Midwest are facing temperatures 10-20 degrees below average, according to forecasters.

Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

A powerful winter storm, influenced by a polar vortex, is impacting much of the U.S., bringing heavy snow, ice, and extreme ...

The majority of the United States will experience chilling temperatures due to a blast of arctic air from Canada. The Midwest ...

Meteorologists warn that a stretched polar vortex could bring severe winter weather to much of the United States.

Here’s the wind chill chart. Notice the four shadings, indicating how long it will take for frostbite. When we get to wind ...

Much of the nation east of the Rocky Mountains is hunkered down for what could be the worst winter storm of the season.

Starting Thursday, dangerously frigid air from Siberia and the North Pole is forecast to plunge the Great Lakes region into ...

Ontario may be one of the coldest places on the planet this Friday as an airmass is expected to be centred over the province, ...

A polar vortex is settling over the eastern United States, and temperatures are expected to fall into the weekend, bringing winter weather with them.

Temperatures could fall below -20 F across certain parts of North Dakota and Minnesota.