High Quality Content by WIKIPEDIA articles! The 2011 Hackleburg – Phil Campbell, Alabama tornado was a violent, long-track EF5 tornado that devastated several towns in northern Alabama, before tearing through the eastern suburbs of Huntsville and causing damage in rural portions of southern Tennessee on the afternoon and early evening of April 27, 2011. It was the deadliest tornado of the April 25–28, 2011 tornado outbreak, the largest tornado outbreak in United States history. The tornado reached a maximum width of 1.25 mi (2.01 km) and was estimated to have had peak winds of 210 mph (340 km/h). The tornado killed 72 people, making it the deadliest tornado in Alabama history and it was the deadliest tornado to strike the U.S. since the Udall, Kansas tornado of 1955 until the catastrophic tornado on May 22, 2011, which killed 158 people in Joplin, Missouri.