Behind the historic winter storm that blasted 40 states this weekend, a dome of Arctic air associated with the polar vortex ...

Extremely cold air is going to take over Michigan, as the center of the Polar Vortex drops far south. The center of this ...

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

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

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

What is the polar vortex? This article explains what a polar vortex is in simple terms, how it influences winter weather in ...

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

Extreme weather is sweeping across the United States. Friday, the polar vortex will peak, bringing freezing temperatures to much of the country.

Watch as a massive bowl of Arctic air is set to bring extreme, potentially record-breaking cold temperatures to parts of the ...

CLEVELAND — The temperature outside was so cold that your fingers, toes, nose and cheeks felt like they were burning. A harsh Arctic cold wave brought record-breaking temperatures to the United States ...

When the polar vortex stumbles, the weather at ground level can pivot from mild to brutal in a matter of days. A circulation that usually spins quietly above the pole can suddenly send lobes of Arctic ...