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

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

Temperatures will start free-falling into the single digits after Friday morning, likely the deepest freeze so far this winter.

Add Yahoo as a preferred source to see more of our stories on Google. The weeks after Thanksgiving might just be a tease for some intense Arctic cold that could arrive later in December. So, cold ...

The polar vortex is weakening, which means New England is in for a colder than usual December, with episodic cold snaps. Every year around this time, that phrase — “polar vortex” — starts to buzz ...

The wall that keeps cold air contained in the Arctic is called the polar vortex. There's been a "displacement" in the polar vortex, which allows Arctic air to escape to the south. An "arctic frontal ...

An arctic air mass has descended into the US, and a disrupted polar vortex will keep the nation in the freezer at times deeper into December. More than 200 million people will wake up to freezing ...

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

Boston has seen just one day so far this month where the average temperature was above the seasonal norm, daring me to ask — are you over the cold yet? Astronomical winter hasn’t even arrived (that ...

CLEVELAND — The temperature outside was so cold that your fingers, toes, nose and cheeks felt like they were burning. A harsh Arctic cold wave brought record-breaking temperatures to the United States ...

The weeks after Thanksgiving might just be a tease for some intense Arctic cold that could arrive later in December. So, cold weather lovers — your time appears to be approaching. And snow lovers, the ...