May 17, 1999
Summary of events of May 16-17, 1999:Two lines of thunderstorms developed over Iowa: one north to south across western Iowa and moved east, and the other repeatedly developed east to west from Butler to Clayton counties in northeast Iowa and moved east. The training of thunderstorms in the northern line dropped extremely heavy rains across portions of northeast Iowa, with an unoffial rainfall total of 8 inches just north of Buchanan County. The storms produced severe weather of nearly every ty
Source: NOAA National Weather Service Storm Events Database (event 5715122). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Dubuque County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.