Aug 12, 2020
Showers and thunderstorms increased in coverage and intensity through the day as daytime heating destabilized the atmosphere. The slow-moving storms occurred near a stalled frontal boundary that extended from northeast Missouri across southern Illinois to central Kentucky. Precipitable water values were near two inches. As a result, rainfall rates in thunderstorms were as much as two to three inches per hour.
Source: NOAA National Weather Service Storm Events Database (event 910215). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Marshall County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.