Snow and icy conditions threatened to paralyze parts of the U.S. South from Texas to Alabama on Thursday, as officials closed schools, canceled or delayed flights and warned residents in some of the worst-hit areas to stay off roads as a winter storm moves east.

Less than 9,000 customers in West Virginia and Virginia remain without power because of power outages caused by a winter storm. According to a Storm Response Update from Appalachian Power, around 8,800 Appalachian Power customers are still without power in West Virginia and Virginia as of 9:00 a.