Aug 12, 2017
A stalled out frontal boundary, combined with an approaching upper level trough of low pressure, led to the development of thunderstorms during the late afternoon hours of August 12th. Thunderstorm activity became better organized as it moved southeast into the central Nebraska Sandhills and portions of central Nebraska. Wind gusts estimated up to 100 MPH, along with very heavy rain and golf ball sized hail was reported.
Source: NOAA National Weather Service Storm Events Database (event 718008). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Custer County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.