The west half of the country, including the Midwest, will start to warm up. But that won't be the case for the East Coast. Here's the forecast.

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

After this weekend's snow storm moves out, cold Arctic air will move in.

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

Washington will be hit with over a foot of snow. The metro area has four million people. Climate change is a trigger. The ...

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

"Potentially hundreds of thousands of people may go without electricity and heat for days, one meteorologist said ...

Michigan is experiencing frigid temperatures and heavy snow due to a dip in the jet stream, not the polar vortex. The polar vortex is a large-scale cyclone of cold air that typically stays far north ...

The big freeze resulting from an Arctic weather phenomenon known as the polar vortex has affected 187 million Americans — more than half the country's population. It was loosening its grip Wednesday, ...

The west half of the country, including the Midwest, will start to warm up. But that won't be the case for the East Coast. Here's the forecast.