The same storm blanketing Oklahoma communities in white also caused hundreds of flight cancellations in Dallas and dozens in OKC.

A winter storm that dropped heavy snow and glazed roads throughout the U.S. South is maintaining its icy grip on much of the region into the weekend.

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.