2011 Joplin tornado
Overall, the tornado killed 158 people (with an additional three indirect deaths), injured some 1,150 others, and caused damages amounting to a total of $2.8 billion. It was the deadliest tornado to strike the United States since the 1947 Glazier–Higgins–Woodward tornadoes, and the seventh-deadliest overall.
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.