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 ...

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

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

The polar vortex is a large area of low pressure and cold air surrounding both of the Earth’s poles. It ALWAYS exists near ...

The polar vortex will push Artic air south, and a severe winter storm could follow. How cold will it get in Louisiana?

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march across the eastern U.S.

The issue arises when this vortex becomes destabilized. During sudden stratospheric warming events—sharp increases in ...

A polar vortex brings bitterly cold Arctic air into southern Ontario. Here’s what it is and what you can expect.

In the coming weeks, cold air will continue for parts of the U.S. thanks to the influence of the polar vortex.

If you thought last week was cold, hold onto your hot lattes and be ready to bundle up as (another) winter storm is forecast to plunge arctic air deep into the Deep South by early next week. January ...

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