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

A storm riding the edge of incoming polar air could bring the D.C. region a meaningful snowfall Sunday, but the exact track ...

Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all ...

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

Another polar vortex is expected to bring subzero temperatures that will affect more than 40 million Americans in the coming ...

A major snow storm is hitting the Northeast this weekend, but what can you expect near you? See the latest NOAA forecast, ...

For Virginia, the chances of a white Christmas are 20-30 percent for areas east of the Appalachians, according to a newly released forecast from The Weather Channel. Temperatures are also expected to ...

A bitter blast of cold air settles over the D.C. region Tuesday as all eyes turn to a potential weekend winter storm that ...

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

A Polar vortex has covered the Philadelphia region under a canopy of frigid temperatures, but many people may not realize what a Polar vortex actually is, and the dangers — like frostbite — such ...