Dec 27, 2015
Flooding of the Ohio and Green Rivers began late in December and continued into January. A very wet pattern developed during the second half of the month. A large upper-level ridge became established over the eastern half of the country, while a large trough formed over the West. This set up a warm southwest flow that brought in copious amounts of moisture.
Source: NOAA National Weather Service Storm Events Database (event 609120). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in McLean County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.