May 28, 2013
A very unstable airmass was in place over Iowa. The stationary front that had been south of the state over the past several days began to lift north and extended from southwest into east central Iowa on the afternoon of the 28th. Temperatures warmed into the low to mid 80s, with dewpoints in the upper 60s to low 70s. CAPE increased to between 3000 and 4000 J/kg by mid afternoon. Downdraft CAPE rose to 800 to 1000 J/kg, while CAPE in the -10 to -30 C layer of the atmosphere was in the 600 to
Source: NOAA National Weather Service Storm Events Database (event 443013). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Monroe County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.