Jun 10, 2018
A series of lines of showers and thunderstorms developed across central Illinois and moved southeast into central Indiana during much of the day into the evening on June 10th. The first line produced some damaging wind and small hail in the northeast. The next batch provided mainly thunderstorm wind gusts across west-central and central Indiana. After that, large hail was reported in Knox County during the late afternoon, with flash flooding reported during the evening hours.
Source: NOAA National Weather Service Storm Events Database (event 765871). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Knox County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.