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

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

Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

A severe winter storm that brought freezing rain, sleet and snow to a large part of the U.S. was intensified by the polar ...

What is polar vortex and how much snow is expected in US? A winter storm linked to polar vortex disruption has impacted ...

As the U.S. prepares to take on another bout of cold weather, the term "polar vortex" is getting thrown around. But what is ...

Similarly, wind chill temperatures measure how cold people and animals feel when outside, measuring the rate of heat loss ...

The meteorologists said the polar vortex system is set up due north of Michigan over Canada's Hudson Bay. It's at least ...

Winter has settled in for the long haul, and the next few days only reinforce that feeling. Tonight brings mostly cloudy ...

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 ...

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