This blast of cold weather is due to activity of the polar vortex.

A major cold blast is in store for millions of Americans as a lobe of a polar vortex will bring brutally cold temperatures to ...

How the Polar Vortex Can Bring Arctic Blasts to the U.S. Vast weather patterns can carry blasts of frigid air far from the ...

The polar vortex can affect weather by acting as a large, low-pressure system that usually keeps Artic air contained near the poles, however, when disrupted, the polar vortex can send surges of ...

But the latest polar vortex is forecasted to affect large parts of the United States, here is what you need to know. Here's a look at weather forecasts for parts of the U.S. that may be hit ...

Snow and winds are likely to trigger flight cancellations and cause headaches for people traveling to DC for Inauguration Day.

Americans face dangerously cold temperatures as a polar vortex brings life-threatening conditions. Nighttime lows may drop to ...

More than 120 million people live in a zone that will experience subzero temperatures — affecting more than ... that will rival the notorious polar vortex episode of winter 2014.

With severely cold temperatures forecasted in York County this week, utility companies are advising customers to take safety ...

Abnormal weather events and severe winter storms could be caused by a disrupted polar vortex. Find out here how the polar ...

According to the National Weather Service, a polar vortex will impact most of the country this weekend, here is what you need to know.