Aug 30, 2021
A few thunderstorms developed during the late morning hours over central North Dakota where southerly low level flow increased instability, and deep layer shear was elevated. Initially, a nearly stationary supercell developed over Oliver County. The storm produced large hail and damaging wind gusts, along with torrential rain that led to flash flooding and damaging gravel roads. The storm eventually started moving to the south-southeast, continuing to produce severe weather in its path. Substant
Source: NOAA National Weather Service Storm Events Database (event 978029). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Oliver County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.