Aug 4, 2016
Enough monsoonal moisture made its way into the mountains and deserts to set off a few isolated thunderstorms, mainly in southwestern San Bernardino County. A spotter reported an area of water around 6 inches deep and about 50 feet wide flowing down Buena Vista Road near Lucerne Valley. There was also dirt and rocks on the roads, including Highway 18 and Custer Road, with a total rainfall of 1.5 inches reported. Another spotter measured one inch of rain in ten minutes elsewhere in Lucerne Valley
Source: NOAA National Weather Service Storm Events Database (event 656741). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in San Bernardino County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.