Jun 8, 2008
Low pressure developed over Kansas with a strong southerly flow of very moist air streaming into Iowa ahead of it. Surface temperatures warmed into the 80s with dew point readings in the low to mid 70s. A semi-stationary front extended northeast from the low, across northern Iowa during the afternoon into the evening hours. The atmosphere became very unstable with MUCAPE in the 4500 to 5000 J/kg range by mid afternoon and lifted indices around -7 C. The shear was quite high, between 40 and 7
Source: NOAA National Weather Service Storm Events Database (event 98783). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Madison County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.