May 29, 2013
Thunderstorms developed along the eastern slopes of the Black Hills and adjacent plains from Nisland to Sturgis to the Rapid City area. As these storms moved toward the northwest, they redeveloped and became stationary over the eastern foothills. As much as six inches of rain fell in a few hours. Flash flooding was reported in Rapid City; Sturgis; and rural areas of Butte, Meade, and Pennington Counties. Runoff from the rainfall quickly inundated city streets, overflowed small creeks, and breach
Source: NOAA National Weather Service Storm Events Database (event 450101). 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.