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 ...

A massive winter storm is expected to impact more than half of the United States with some help from an arctic air mass.

Alabama braces for another polar vortex blast bringing well below freezing temperatures. How cold will temperatures get? Here ...

The big winter (and popular) topic is dusted off very early this season as frigid air plunges south next weekend. But what is ...

What is the polar vortex? This article explains what a polar vortex is in simple terms, how it influences winter weather in ...

The majority of the United States will experience chilling temperatures due to a blast of arctic air from Canada. The Midwest ...

Extremely cold air is going to take over Michigan, as the center of the Polar Vortex drops far south to just north of ...

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

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 ...

The severe weather pattern is caused by disruption of the polar vortex, which normally remains uniform over the North Pole.

According to a temperature outlook from the National Weather Service (NWS) Climate Prediction Center (CPC), for the January ...