Historic Mega-Rain Events in Minnesota

Minnesota is no stranger to heavy rain events. The early surveyors mapping out the state witnessed such events. This summary is a preliminary list of exceptional heavy rain episodes found by the State Climatology Office that reached saw six inches or more over a coverage of 1,000 square miles, equaling roughly 30 townships. There may be other events prior to 1972 that require further investigation such as September 11-15, 1903.


For more information contact: climate@umn.edu