According to the National Weather Service, a polar vortex will impact most of the country this weekend, here is what you need ...

Cities across the U.S. are bracing for cold temperatures as a polar vortex arrives, bringing temperatures down to much below ...

It's going to get cold in Tennessee. Meteorologists predict freezing temperatures for much of the state. Here's the latest.

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into ...

Snow and winds are likely to trigger flight cancellations and cause headaches for people traveling to DC for Inauguration Day ...

An arctic blast will send temperatures across the United States plummeting as bitterly cold air that originated in Siberia ...

We start the following work week with a polar vortex. This will bring in unseasonably cold air to the region and wind chill ...

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

Abnormal weather events and severe winter storms could be caused by a disrupted polar vortex. Find out here how the polar ...

Here is what is and isn't a polar vortex when Colorado receives cold like what is forecast for the holiday weekend.

A blast of Arctic air is set to cover much of the United States with temperatures below freezing starting on Friday and into next week, impacting millions of Americans in nearly all of the contiguous ...