Jun 14, 2018
With already high water levels from periodic early June rains, 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 in the lower portions of the basin, with amounts from 7 to 11 inches around the Iowa Great Lakes
Source: NOAA National Weather Service Storm Events Database (event 765959). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in O'Brien County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.