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.

With the possibility of frozen precipitation in north Louisiana, area schools and government offices may announce closures as a measure of caution and to limit the amount of traffic on potentially icy roadways.

School districts in the Dallas-Fort Worth area are closing their campuses Thursday and Friday as a winter storms bring a wintry mix to the region.