Jul 21, 1998
A rather complex weather situation was in place over Iowa. An outflow boundary drifted south across the state during the day from convection that had taken place earlier in the day. The boundary became stationary over the southern sections of the state. The airmass to the south of the boundary was extremely unstable. Thunderstorms developed explosively after sunset in a line from eastern Iowa all the way back to central Nebraska. The storms were moving east, however the line was moving only
Source: NOAA National Weather Service Storm Events Database (event 5653698). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Audubon County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.