willis tower

Lightning strikes the Willis Tower (formerly Sears Tower) in downtown in Chicago, Illinois. A massive storm system with heavy rain, high winds, hail and possible tornadoes is expected to move into Illinois and much of the central part of the Midwest today.

Scott Olson/Getty Images

Lightning strikes the Willis Tower (formerly Sears Tower) on early Thursday morning in Chicago, Illinois. A massive storm system with heavy rain, high winds, hail and possible tornadoes is expected to move into Illinois and much of the central part of the Midwest.