Aug 5, 1998
The same upper level warm core low mentioned a couple days prior continued to spin over Iowa. During the night heavy rainfall developed much like occurs in the central dense overcast of a tropical system. The rain was rapid and tropical in nature with two to four inches of rainfall in a little over an hours time. Urban flooding was the only problem in the county as antecedent soil conditions were extremely dry from a record dry month in July. Damage was very minor in spite of the high amouts
Source: NOAA National Weather Service Storm Events Database (event 5657400). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Black Hawk County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.