1883 Rochester tornado

The 1883 Rochester tornado was an F5 (estimated) tornado that hit Rochester, Minnesota on August 21, 1883. The tornado was one in a series of tornadoes that hit Southeast Minnesota on that day, causing at least 37 deaths and over 200 injuries, and it was the impetus for the creation of the Mayo Clinic. On July 21, two other tornadoes struck the area. An F4 tornado was one of a family of tornadoes that killed 4 people near Dodge Center (15 miles west of Rochester), and an F2 tornado devastated Elgin, 10 miles (16 km) northeast of Rochester.

• http://en.wikipedia.org/wiki/1883 Rochester tornado