A polar vortex is expected to bring snow and ice to 26 states and D.C., threatening travel with blizzard conditions and record-low temperatures.

The second winter storm of the week is moving in, and the National Weather Service has updated its forecast for Friday. Here's what they're saying.

A “significant Arctic outbreak” of cold air will cover large swaths of the U.S. starting this weekend, with frigid conditions anticipated to last into mid-January.

Parts of Texas, Oklahoma and Arkansas began to see snowfall on Thursday as Southern states stretching to the Carolinas brace for the storm to reach them on Friday.

The pattern had been predicted to form for several months, and weak La Niña conditions were finally officially met this week.

Several states across the U.S. are under alert as the new storm system approaches. Texas, Oklahoma, Arkansas, Louisiana, and Missouri have severe weather alerts in effect through Friday, January 10. Meanwhile, Tennessee, northern Alabama, and parts of Indiana and Kentucky will remain under warnings through Saturday.

The new year is ushering in a major winter storm across a wide swath of the United States, blasting large regions of the country with heavy snow and dangerous ice. 60 million people are under weather

Another blast of winter storms is closing schools, snarling flights and putting millions of residents on alert across parts of the Deep South and south-central U.S.

Oil prices rose more than 1% on Thursday as cold weather gripped parts of the United States and Europe, boosting winter fuel demand.

One passenger was taken to a hospital for treatment, while three people were treated at the scene for minor injuries.