The 2011 Joplin tornado was a large and devastating multiple-vortex tornado that struck Joplin, Missouri, United States, on the evening of Sunday, May 22, 2011. Wikipedia Feedback Things to know Length: 38 minutes – kmbc.com Size: maximum width of over one mile – stormaware.mo.gov Severity: destroyed or damaged virtually everything in a six-mile path – stormaware.mo.gov Magnitude: winds peaking at more than 200 mph – stormaware.mo.gov Biggest Tornado: 1,600 yards (1,500 m) across at its widest p