Jun 26, 2013
An unstable and very moist atmosphere was in place across Iowa with numerous boundaries across the region. Precipitable water was around 1.8 inches. About 3000 J/kg of CAPE was available, but severe parameters were relatively weak. With the deep warm cloud depth in place, thunderstorms were efficient rain producers. Thunderstorms formed along an upper level boundary in northeast Iowa. They were in a northwest to southeast orientation, with the thunderstorms training southeast along the line
Source: NOAA National Weather Service Storm Events Database (event 448666). 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.