3 to April 4, 1974, there were 148 tornadoes confirmed in 13 states, including Illinois, Indiana, Michigan, Ohio, Kentucky, Tennessee, Alabama, Mississippi, Georgia, North Carolina, Virginia, West Virginia, and New York; and the Canadian province of Ontario. It extensively damaged approximately along a total combined path length of . The 1974 Super Outbreak remains the most outstanding severe convective weather episode of record in the continental United States. The outbreak far surpassed previous and succeeding events in severity, longevity and extent. Shortly after an F-5 tornado struck Depauw, northwest of Louisville, the Hanover/Madison F4 twister formed near Henryville and traveled through Jefferson County, leveling many structures in the town of Hanover and in Madison. Eleven were killed in this storm, while an additional 300 were injured. According to WHAS-TV in Louisville, 90% of Hanover was destroyed or severely damaged, including the Hanover College campus. Despite the fact that no one was killed or seriously injured at the college, all but one of the college's 33 buildings were damaged, including two that were completely destroyed and six that sustained major structural damage. Hundreds of trees were downed, completely blocking every campus road. All utilities were knocked out and communication with those off campus was nearly impossible. Damage to the campus alone was estimated at about $10 million. In Madison, seven fatalities took place, and about 300 homes were destroyed; the tornado also brushed the community of China, causing additional fatalities. The same storm would later strike the Cincinnati area, producing multiple tornadoes including another F5. Powerboat racing Madison has a powerboat racing tradition dating back to at least 1911. In 1929, the city began holding an annual race, later called the Madison Regatta beginning in 1948. Since 1954, the Madison Regatta has held a high points Unlimited hydroplane race annually in early July. Although Madison has a population of only 12,000, the regatta maintains its place in Unlimited Hydroplane racing, hosting an H1 Unlimited race, whose other events are in Seattle, San Diego, Guntersville, Alabama, and Tri-Cities, Washington. The Madison Regatta draws about 70,000–100,000 people annually on the July 4 weekend. A week-long riverfront festival also surrounds this racing event. A source of community pride is that Madison has the world's only community-owned unlimited hydroplane racer, Miss Madison, which began Unlimited-class racing in 1961. The boat, which has been known by various corporate sponsor names but was officially called U-6, traditionally