Cars avoid debris from a skywalk damaged by one of two tornadoes that ripped through Nashville, Tenn., Thursday. An estimated 100 people were hurt, and 500 buildings were damaged in the city. Power was restored to 90 percent of the downtown area by Friday morning. The latest series of storms, the second to roar through the South in eight days, killed at least 11 people in Tennessee, Kentucky and Arkansas. See story on Page A2.