Jun 3, 2014
A very dynamic weather pattern was in place over the central U.S. on the 3rd. A strong short wave moved out of the Rockies onto the Plains during the day. Thunderstorms formed early in Nebraska and South Dakota. The storms spread and developed southeast into Iowa during the afternoon and evening. The airmass became unstable with CAPE values rising to about 2000 J/kg. Downdraft CAPE rose to to around 1000 J/kg, with about 600 J/kg of CAPE available in the -10 to -30 layer of the atmosphere.
Source: NOAA National Weather Service Storm Events Database (event 510311). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Decatur County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.