May 24, 2015
A slow-moving upper level low south of Wyoming sent waves of moisture northward over central and eastern Wyoming during the Memorial Day holiday weekend. Measured and estimated rainfall totals ranged from two to around five inches. This resulted in flooding and flash flooding in several areas. Johnson County saw significant flooding along the tributaries and main stem of the Powder River and around Buffalo. The greatest impact was felt in Hot Springs County where heavy rains in the Wind River Ca
Source: NOAA National Weather Service Storm Events Database (event 583485). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Johnson County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.