A fresh blast of Arctic air is poised to spill across a wide swath of the United States, and the latest polar vortex map ...

A chilling polar vortex is set to bring snow and ice to the South and East this week. We show where.

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

Arctic air originates near the polar regions and is among the coldest air masses on Earth. It typically stays locked in ...

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. CLEVELAND (WJW) — The effects of a Polar ...

NORFOLK, Va. — Have you ever wondered why some winters are mild while others bring freezing temperatures and snowstorms? One of the key players in these dramatic shifts is something called the polar ...

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...

Add Yahoo as a preferred source to see more of our stories on Google. At the same time, every hurricane that formed, including the three powerful Category 5 storms, steered clear of the U.S. mainland.