Jul 20, 2010
The nearly stationary frontal boundary that had plagued Iowa for the previous couple days remained in place, setting the stage for strong thunderstorm development to the north of the front. The airmass remained quite unstable with CAPE of 2000 to 3000 J/kg over southern Iowa and lifted indices around -10 C. Precipitable water values were quite high, in the 1.7 to 2 inch range. Thunderstorms that occurred earlier in the evening had drifted south of the state, but they refired back northwest int
Source: NOAA National Weather Service Storm Events Database (event 233730). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Appanoose County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.