Sep 12, 2019
A nearly stationary boundary again focused widespread heavy rainfall during the late evening on September 11 and early morning hours of September 12. Precipitable water was at or exceeding the record values for the date at nearby locations. As the low-level jet increased during the evening over the outflow pool in the wake of earlier severe convection, training of convection initiated across areas which had received several inches of rainfall during the previous night. Even short duration int
Source: NOAA National Weather Service Storm Events Database (event 858128). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Minnehaha County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.