May 4, 2003
The first two weeks of May brought repeated convective storm activity to the DMX HSA, with many strong to severe thunderstorms and significant, although not generally excessive rainfall. The primary cause of the active weather was the presence of an upper level low anchored over the western U.S. for much of this period. Shortwaves of variable strength were continually ejected from the upper low into a favorable, diffluent pattern aloft and strong jet dynamics combined with low-level moisture dra
Source: NOAA National Weather Service Storm Events Database (event 5351978). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Wapello County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.