Jul 25, 2020
Storms tracked across north central and northeast South Dakota during the evening hours of July 24th and into July 25th. Developing in a very moisture rich atmosphere, the storms were able to produce very heavy rain in a short amount of time, especially over parts of northeastern McPherson County, northern Brown County and far northwestern Marshall County. Rainfall amounts ranged from 4 to 8 inches, while localized amounts approached a foot. The heavy rain led to significant overland flooding as
Source: NOAA National Weather Service Storm Events Database (event 910252). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Brown County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.