Louis), according to a Water Survey report. The previous record 24-hour rainfall was 16.54 inches set on June 14-15, 1957, near Millstadt in St.
An entire Water Survey report was written on the storm that produced this record. The current record for the heaviest 24-hour rainfall total in Illinois is 16.94 inches at the NWS cooperative observer gauge in Aurora on July 17-18, 1996.
This storm caused widespread damage across the region. Reported rainfall amounts from the July 1996 storm in northern Illinois.
