Tornado outbreak sequence of May 21–26, 2011
The tornado outbreak sequence of May 21–26, 2011 was one of the largest tornado outbreaks on record which affected the Midwestern and Southern regions of the United States. Most of the tornadoes developed in a corridor from Lake Superior southwest to central Texas; isolated tornadoes occurred in other areas. An especially destructive tornado destroyed one-third of Joplin, Missouri, resulting in 158 deaths and over 1,000 injuries. The Joplin tornado is the deadliest in the U.S. since April 9, 1947, when an intense tornado killed 181 in the Woodward, Oklahoma area. Tornado-related deaths also occurred in Arkansas, Kansas, Minnesota, and Oklahoma. Overall, the tornado outbreak resulted in 184 deaths, 6 of those non-tornadic, making it second only to the 2011 Super Outbreak as the deadliest since 1974, and the second costliest tornado outbreak in U.S. history behind that same April 2011 outbreak, with insured damage estimated at $4–7 billion.
1965 Palm Sunday tornado outbreak
Another tornado formed near the St. Joseph County–Elkhart County border. It tracked east-northeasterly, striking Wakarusa, Indiana, where it killed a child. The tornado moved toward Dunlap, and the Midway trailer park. "Elkhart Truth" reporter Paul Huffman captured a series of photographs as the twin-funneled, F4 tornado obliterated the trailer park, just south of Dunlap. This initial tornado killed 14 people. One half-hour later, a second F4 tornado directly struck Dunlap to the north and devastated the Sunnyside Housing addition and the unoccupied Sunnyside Mennonite Church. The death toll from the Sunnyside Housing Addition was 28 people, with another six killed at a truck stop at the intersection of Highways 15 and 20. The Palm Sunday Tornado Memorial Park now exists near this location, at the corner of County Road 45 and Cole Street in Dunlap. Most of the 36 people killed in the tornado had no warning because the high winds from the first tornado had knocked out telephone and power grids. For the first time in the U.S. Weather Bureau's history, all nine counties in the northern Indiana office's jurisdiction were under a tornado warning. This is called a "blanket tornado warning." Both tornadoes were officially rated as F4 according to the National Weather Service records. However, both the Midway and Dunlap tornadoes were previously rated F5.