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

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

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

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

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

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

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.

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

What is the polar vortex? Mississippi weekend weather forecast calls for winter storm with lows in the teens, paired with ...

Here in the lower Great Lakes Region, we are well-equipped to handle blasts of cold and snow. It’s when the polar vortex sends arctic air into areas that don’t usually receive it that it can become ...

Year-round, severe, Artic air is usually kept tightly contained in the North Pole. Arctic wind patterns create a sort of wall ...