More dangerously cold air is on the way for much of the U.S. Will Tennessee be impacted? Here's what to know.

Windchill temperatures as low as minus 30 degrees are a risk to life, forecasters said.

While forecasters can't yet say for sure, a warmer stretch of weather appears likely for much of the nation. Here's when to ...

A major weather pattern change underway across U.S. As we get into next week, the storm track looks really interesting.

A chilling polar vortex is set to bring snow and ice to the South and East this week. We show where.

Extreme cold warnings span several eastern states as of Friday, with meteorologists warning of frigid wind chills.

The Polar Vortex is expected to be impacted by a Sudden Stratosphere Warming, bringing cold air to the eastern US.

While the Northeast braces for another frigid polar vortex, Oklahoma will experience unseasonable temperatures. Here's when ...

During winter in the Northern Hemisphere, the polar vortex can often expand and send cold air south, often referred to as an ...

A winter buzzword, explained.

To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of ...

The Polar Vortex is expected to be impacted by a Sudden Stratosphere Warming, bringing cold air to the eastern US.