Jul 7, 2016
A developing line of thunderstorms moved east-southeast across southern Illinois during the late morning and early afternoon hours. The storms moved through a moist and unstable environment ahead of a 500 mb shortwave trough over the mid and upper Mississippi Valley. A west to southwest flow of very moist air at 850 mb averaged from 20 to 30 knots. A few isolated storms produced damaging wind.
Source: NOAA National Weather Service Storm Events Database (event 647177). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Johnson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.