The first of three rounds of bitter air has arrived, threatening record lows in cities from the Midwest to the Northeast.

Thanks to the polar vortex, the first half of December will bring multiple waves of Arctic air to the U.S. Here's what to ...

If you hear that the polar vortex is coming, you should expect to experience a lot of cold. CLEVELAND — The temperature ...

Here's a look at how and when the stormstorm winds down. There is a small, important travel area that will remain dangerous.

In yet another sign that winter weather is either here or will be soon, the dreaded polar vortex is making news yet again. Its potential arrival in the United States over the next few weeks is cause ...