Jun 17, 2014
An area of low pressure over northeastern Wyoming interacted with a stationary boundary across western South Dakota and produced slow moving thunderstorms. With ample low level moisture over the area, the thunderstorms produced torrential rainfall. Between three and six inches of rain fell across portions of Harding and northwestern Butte Counties on June 17. The runoff from these storms and additional rain on June 18 and 19 caused significant flooding across much of northwestern South Dakota.
Source: NOAA National Weather Service Storm Events Database (event 530675). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Butte County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.