The last tornado to touch ground on the ISU campus was quite a surprise.

The F1 tornado occurred Sept. 8, 2005 around noon. According to the Iowa State News Service, there had been no tornado watches or warnings in the hours leading up to the storm. 

An article in the Chicago Tribune reported that the tornado clocked winds of 83 miles per hour and touched down for nearly half a mile. 

The storm uprooted trees and covered sidewalks and roads with torn-off tree branches. A light pole was blown over near the Gerdin Business Building and tents and portable toilets near Jack Trice Stadium blew into some vehicles, the Iowa State News Service reported. 

The service also stated that there were no reports of serious injuries, but one person was sent to Mary Greeley Medical Center for treatment and observation.