A tornado crossing Route 270 on Wednesday in Beaver County in the Oklahoma Panhandle. The authorities had urged residents to take shelter.
A storm system that unleashed violent tornadoes in Texas has moved into the western Plains and Rocky Mountain states, bringing the threat of feet of snow and blizzard conditions.
More than seven million Americans are under winter weather alerts and about 300,000 are under blizzard warnings Sunday morning. Parts of the western Plains and Rocky Mountain states reported several inches of snow Saturday, and much more could be on its way Sunday.
Up to 18 inches of snow is possible in Denver, while areas north of Boulder could see more than two feet of snow, .
The National Weather Service in Boulder reported moderate to heavy snow and poor travel conditions early Sunday from north of Denver to the Wyoming border.
The Denver International Airport reported seven inches of snow late Saturday, according to the weather service. More than 2,000 flights into and out of Denver this weekend have been canceled. Across Colorado, several major roads are closed, including two stretches of interstates.
Leadville, Colorado reported more than 10 inches of snow early Sunday morning while the town of Sawpit also saw nearly 10 inches of snow, according to snowfall totals posted by the National Weather Service.
The snow coupled with high winds could mean that parts of Wyoming, Nebraska and South Dakota will see blizzard conditions, making travel in those areas next to impossible, according to Mauldin.
Uinta County, Wyoming, could see snowfall totals of one to two feet, the weather service from Salt Lake City, Utah, projected. The weather service in Cheyenne, Wyoming, reported their office received more than eight inches of snow Saturday.
A winter weather advisory remains in effect through 6 a.m. Sunday for the central Utah mountains, Wasatch Plateau and Book Cliffs while a winter storm warning is in effect through 6 p.m. Sunday for the western Uinta Mountains and Uinta County, Wyoming, the weather service said.
Komen