Sep 20, 2018
Precipitable water was near record levels across the immediate region for this time, with a strong low-level jet interacting with near nearly stationary west to east boundary as several weak disturbances progressed northeast across the area. Three to four inches of rain fell across lower portions of the James River basin on September 18-20. A fairly rapid rise into minor to moderate flooding occurred as a result of several periods of heavy rainfall.
Source: NOAA National Weather Service Storm Events Database (event 782374). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Yankton County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.