Meteorologists blame a stretched polar vortex, moisture, lack of sea ice for dangerous winter blast

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

Why is the winter storm so intense? Polar vortex, moisture, jet stream align

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

January polar vortex to bring arctic chill, usher in TN winter storm

A polar vortex is expected to bring two surges of extremely cold air to the U.S. in January. Here's what to know in Middle ...

What is a polar vortex? Wind chill temperature? Winter weather terms to know

As a winter storm approaches Western North Carolina and other regions, here's what to know about deciphering forecaster terms ...

How cold will Mississippi get? Polar vortex bringing winter storm, ice, snow

The polar vortex is set to bring a winter storm to parts of Mississippi with ice, snow. But extreme cold will last for days.
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Meteorologists blame a stretched polar vortex, moisture, lack of sea ice for winter blast

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

More than 11,000 flights canceled as major winter storm bears down across much of the US

More than 11,000 flights across the U.S. set to take off over the weekend were canceled as a monster storm started to wreak havoc Saturday across much of the country and threatened ...