Apr 22, 1999
Another strong low pressure system moved across Kansas and Missouri on the 21st and 22nd. This system brought moderate to heavy rainfall to the Des Moines HSA. In the overnight hours of 21 April, heavy rains fell in the extreme upper end of the North Raccoon River basin. Radar estimates were inflated by a factor of two on the rainfall amounts, with actual rainfall close to 2 inches. A widespread area of one to one and one half inches fell over much of the rest of the Raccoon River basin. A
Source: NOAA National Weather Service Storm Events Database (event 5687103). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Clarke County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.