Historic Mega-Rain Events in Minnesota

Minnesota is no stranger to heavy rain events. The early surveyors mapping out the state witnessed such events.

The DNR climate office has assembled a list of so-called "Mega-rain" events that have occurred since statehood. These are events where a six-inch area covers more than 1000 square miles and the core of the event topped eight inches. Using newspaper accounts, diaries, and the historical climate record, twelve such events in Minnesota's post-settlement history have been identified. Of particular note is that five of those twelve events have occurred since 2000.

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