The 2011 St. Louis tornado was a storm that struck the St. Louis metropolitan area on April 22, 2011. It was part of the April 19–24, 2011 tornado outbreak sequence.
The tornado, rated EF4 at its strongest point with winds exceeding 165 mph, was the strongest to hit St. Louis County or City since January 1967. The tornado moved through many suburbs and neighborhoods, damaging and destroying many homes and businesses. The worst damage was in the Bridgeton area, where a few homes were completely leveled. In its 22-mile track across the St. Louis metropolitan area, the tornado damaged thousands of homes; it left thousands without power; and it damaged the main terminal of Lambert-St. Louis International Airport, closing it for nearly 24 hours. The tornado crossed into Illinois and tore the roofs off of homes in Granite City before dissipating.