A powerful winter storm that dumped heavy snow and glazed roads with ice across much of Texas and Oklahoma lumbered eastward into southern U.S. states overnight, prompting governors to declare states of emergency and shuttering schools across the region.

In addition to flight disruptions, Thursday's severe weather led to hundreds of power outages and some traffic delays.

A winter storm in Texas is causing widespread flight cancellations, particularly in Dallas, a major airline hub.

A powerful winter storm brought heavy snow and icy conditions to parts of the U.S. South on Thursday, forcing officials to close schools, cancel flights and warn residents in some of the worst-hit areas to stay off roads as it lumbered eastward through Oklahoma and Texas.

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. The storm started dumping a mix of sleet and heavy snow Thursday in north Texas and Oklahoma,

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. The storm started dumping