(AP) - A powerful storm crawled across the Southeast Friday, bringing icy rain and snow to a region still reeling from a wintry blast earlier this week. Thousands were urged to stay home and Super Bowl planners worried about disruptions surrounding this weekend's game in Atlanta. The storm dumped more than a foot of snow early today in parts of Arkansas and Mississippi, where a driver was killed Thursday afternoon when he lost control of his vehicle and veered into oncoming traffic in Yazoo County. Lighter amounts were reported farther east, but forecasters warned that icy sleet could coat roads and power lines from Alabama to the Carolinas by Friday night.