A downed tree broke the gas main, causing an evacuation of residents on Thursday April 3, 2014 in University City, Mo. A tornado touched down briefly in the St. Louis, damaging some homes and bringing down trees and power lines. No injuries were immediately reported. Jim Sieveking, of the National Weather Service in St. Louis, says the tornado touched down early Thursday as a strong storm system with intense lightning and heavy rain moved through the St. Louis region. (AP Photo/St. Louis Post-Dispatch, Christian Gooden)