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

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

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

What is the polar vortex? This article explains what a polar vortex is in simple terms, how it influences winter weather in the U.S., and why meteorologists talk about it during major cold events.

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What is the polar vortex? It’s a wintertime mainstay capable of flooding Canada with some of the world’s coldest air ...