allowed Cincinnati to become a national forerunner in the brewing industry. Media During experimentation for six years (until 1939), Cincinnati's AM radio station, WLW was the first to broadcast at 500,000 watts. In 1943, King Records (and its subsidiary, Queen Records) was founded, and went on to record early music by artists who became highly successful and influential in Country, R&B, and Rock. WCET-TV was the first licensed public television station, established in 1954. Cincinnati is home to radio's WEBN 102.7 FM, the longest-running album-oriented rock station in the United States, first airing in 1967. In 1976, the Cincinnati Stock Exchange became the nation's first all-electronic trading market. Race relations There have been many incidents of race-based violence before and after the Civil War with the most notable and most recent one being the 2001 Cincinnati Riots. Disasters Cincinnati has experienced multiple floods in its history. The largest being the Ohio River flood of 1937 where the hydrograph measured a river depth of 80 feet—55 feet above normal levels. On December 3, 1979, 11 persons were killed in a crowd crush at the entrance of Riverfront Coliseum for a rock concert by the British band The Who. Being in the Midwest, Cincinnati has also experienced several violent tornadoes. Of the 1974 Super Outbreak tornadoes, a F5 crossed the Ohio River from northern Kentucky into Sayler Park, the westernmost portion of the city along the Ohio River. The tornado then continued north into the suburbs of Mack, Bridgetown and Dent before weakening. The parent thunderstorm went on to produce another violet F4 that touched down in Elmwood Place and Arlington Heights before leaving the city limits and tracking toward Mason, Ohio. Three people lost their lives, while over another 100 were injured in both of these tornadoes. In the early morning hours of 9 April 1999, another violent tornado grazed the Cincinnati Metro, in the suburb of Blue Ash. It was rated an F4 killing 4 residents. See also Timeline of Cincinnati History of Over-the-Rhine Cincinnati Township, Hamilton County, Ohio Millcreek Township, Hamilton County, Ohio Spencer Township, Hamilton County, Ohio Storrs Township, Hamilton County, Ohio Notes References Sources Cincinnati Firsts. Greater Cincinnati Convention and Visitors Bureau. Evolution of the National Weather Service. National Oceanic and Atmospheric Administration. Further reading Aaron, Daniel. Cincinnati, Queen City of the West: 1819-1838 (1942, reprint 1992), online Beckman, Wendy. 8 Wonders of Cincinnati (Arcadia Publishing, 2017).