Temperatures are expected to plummet over the weekend, bringing life-threatening conditions to large stretches of the United States. The polar vortex will send temperatures below freezing for much of the country starting this weekend and stretching into next week,

As the cold front moved southward Tuesday, it prompted a cold weather advisory for the Gulf Coast and pushed temperatures below freezing in El Paso, Texas.

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

Most of the U.S. will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send temperatures tumbling below freezing for most of the nation starting this weekend.

A Siberian chill is on the horizon, threatening to plunge the U.S. into a deep freeze in parts of the east coast