May 22, 2004
May 2004 began rather dry with an average of only 0.19 inches of rain over the first week of the month. However, the second week of May brought seasonally normal rainfall. Heavy rain occurred during the third week of the month. May's greatest rain events came back to back. The first round of heavy rain producing thunderstorms began on the morning of the 21st and continued into the morning of the 22ns. Heaviest rains were in North Central and Northeast Iowa where storm totals included 4.75 i
Source: NOAA National Weather Service Storm Events Database (event 5393676). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Grundy County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.