A polar vortex will linger through much of the country for most of this February, prolonging the deep freeze for weeks to ...

Much below normal temperatures should persist across the eastern U.S. into early February before moderating slightly.

Waves of frigid air will continue to be released into much of the eastern United States through at least the middle of the ...

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

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

A snowstorm and harsh winter weather have impacted at least 177 million people across the US ...

The big winter (and popular) topic is dusted off very early this season as frigid air plunges south next weekend. But what is ...

The polar vortex isn’t just “cold air” — it’s a massive atmospheric engine that can shift and crack, sending brutal winter outbreaks far from the Arctic. This decade, scientists warn its behavior ...

A collapse in the polar vortex is letting Artic air come here. What that means, and why it happens.

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.

About 230 million people will face temperatures of 20 degrees or colder and about 150 million likely will be hit by snow and ...