Sep 21, 2010
A cold front moved southeast across the state during the day on the 21st. The airmass was moderately unstable with CAPE values ahead of the front around 2000 J/kg and lifted indices of -3 to -6 C. Downdraft CAPE was between 800 and 1000 J/kg, with 500 J/kg of CAPE available in the -10 to -30 C layer of the atmosphere. Precipitable water values increased to between 1.5 and 2 inches. Sufficient shear was available with about 40 kts of shear. The freezing level was quite high, around 14,000 fe
Source: NOAA National Weather Service Storm Events Database (event 251993). 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.