On May 5–8, 1965, a significant tornado outbreak affected much of the Central United States. For four consecutive days, tornado outbreaks produced at least three significant (F2+) tornadoes each day, and at least two violent (F4–F5) tornadoes on three of the four days. The entire sequence generated 37 significant tornadoes, including at least nine violent tornadoes, one of which was rated F5. On May 5, two F4s struck Iowa, including a long-tracked tornado family that injured 11 people. On May 6, an outbreak of six strong tornadoes, four of them violent F4s, affected Minneapolis and St. Paul, Minnesota, and has been nicknamed "The Longest Night", killing 13 people and causing major damages—at the time the most damaging single weather event in Minnesota history. Three of the six tornadoes oc