Jul 3, 2009
Intense rainfall accompanied a strong thunderstorm which gained strength just west of Casper before blasting through town. The thunderstorm formed in a uncharacteristically moist airmass where precipitable water values approached 150% of normal. Longtime residents reported this to be the worst flash flooding they had seen in the city.
Source: NOAA National Weather Service Storm Events Database (event 177920). 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.