Aug 3, 2005
In the early evening hours, a strong thunderstorm and its associated heavy rainfall neared the Casper area dropping a significant amount of rainfall. Within the city of Casper, rainfall totals ranged from 1 to 1.5 inches in less than a hour which led to an area of flash flooding. The rushing water moved cars several feet, approached the doorsteps and flooded the basements of several homes in the Allendale area, and caused an underground drainage pipe to give way causing a 20-foot wide sinkhole
Source: NOAA National Weather Service Storm Events Database (event 5470943). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Natrona County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.