Jun 21, 2018
Starting June 20, the area was impacted adversely by several very slow moving mid-level waves which drifted across the northern and central Plains and interacted with a nearly stationary region of baroclinicity during the following week. High precipitable water and persistent lift forcing resulted in a widespread 3 to 6 inches of rainfall, with amounts from 7 to 11 inches around the Iowa Great Lakes. Crop and pasture land was inundated for almost a month, along with many roads and city parks.
Source: NOAA National Weather Service Storm Events Database (event 764877). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Dickinson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.