Mar 30, 2018
A slow-moving cold front drifted slowly southeast across southern Illinois on the 27th, then stalled over the Tennessee Valley on the 28th. The front returned north as a warm front and stalled over the Ohio Valley on the 29th. Widespread heavy rainfall from this oscillating front eventually brought many rivers above flood stage. The rivers continued rising into April.
Source: NOAA National Weather Service Storm Events Database (event 740313). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Massac County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.