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.
Mercy (healthcare organization)
On May 22, 2011, one of Mercy's larger hospitals, St. John's Regional Medical Center (now rebuilt and called Mercy Hospital Joplin) was seriously damaged by a tornado from the May 2011 tornado outbreak. At least four people were killed inside the hospital and its grounds, and surviving patients were evacuated from the health facility, which sustained major structural damage. One of the hospital's towers took a direct hit by the storm and was rotated four inches on its foundation.