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

The coldest weather of the season to date will be due to a phenomenon called a polar vortex, an upper-level jet stream that ...

These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...

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

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 polar vortex dipping down from Siberia will bring a cold front with frigid temperatures to nearly 300 million Americans.

Are you ready for the coming arctic storm? Here’s the latest Colorado weather forecast and everything else you need to know ...

It’s going to be a rude awakening tomorrow — a full taste of winter, for sure,” National Weather Service meteorologist says ...

Extreme cold is set to grip much of the country starting this weekend with the return of the polar vortex. Some regions are ...

Most of the U.S. will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send ...

Environment Canada is warning Toronto residents as the polar vortex approaches this weekend, bringing the coldest ...