An ice storm battered parts of Texas on Monday, knocking out power to thousands of homes, causing hundreds of traffic accidents and prompting more than 1,500 airline flight cancellations.
The storm, packing high winds and freezing rain, coated highways with sheets of ice, and authorities advised commuters to stay off the roads. The cold was expected to last another day, keeping road surfaces slick.
Snow and freezing rain fell in parts of New Mexico and Colorado, while Utah and northern Arizona were also under winter storm warnings, the weather service said.
At Dallas/Fort Worth International Airport, one of the busiest in the United States and a hub for American Airlines, nearly 1,100 flights were canceled as of Monday afternoon, according to tracking service FlightAware.com. At Love Field in Dallas, a major airport for Southwest Airlines, more than 100 flights were canceled, it said.
In Tennessee, at least 22 people have been killed in the past few days because of icy winter conditions, the state's Emergency Management Agency said.
Eleven people have died in Kentucky from the snow and ice that began pummeling the state on Feb. 16, officials said.