to and just north of the 1974 path. Before the 1974 storm, the city had no tornado sirens. After the F5 tornado hit on April 3, 1974, ten sirens were installed across the area. Preliminary F6 rating Dr. Ted Fujita and a team of colleagues from the University of Chicago, University of Oklahoma, and National Severe Storms Laboratory, undertook a 10-month study of the 1974 Super Outbreak. Along with discovering much about tornadoes which was not known before, such as the downburst and the microburst, and assessing damage to surrounding structures, the Xenia tornado was determined to be the worst of the 148 storms. Fujita initially assigned a preliminary rating of F6 intensity ± 1 scale, before deeming F6 ratings "inconceivable". Media significance The Xenia tornado was the most significantly covered tornado of the outbreak, mainly due to the damage it caused and the number of deaths, and bumper stickers stating "Xenia Lives!" appeared on vehicles. See also List of F5 and EF5 tornadoes Tornadoes of 1974 References F5 tornadoes Tornadoes of 1974