Jul 26, 2022
A complex of thunderstorms moved east across parts of southern Illinois through the morning. Training of heavy rain resulted in widespread 2 to 4 inches of rainfall along the Interstate 64 corridor. The persistent thunderstorms were focused along a stalled elevated warm front across the mid Mississippi Valley. Strong convergence in the 925 to 850 mb layer was oriented generally parallel to the mean storm movement. Instability of at least 500-1500 J/kg just south of the training storms supported
Source: NOAA National Weather Service Storm Events Database (event 1039098). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Jefferson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.