Jul 13, 1999
Thunderstorms moved over the same area that had experienced flash flooding the previous two days. Four creeks overflowed as the area received 1.8 inches of rain in 25 minutes. A 10 foot wall of mud and debris washed across roads. Four homes were destroyed, 10 sustained major damage, and 16 sustained minor damage. Hail, 0.75 inch diameter, was reported as the heavy rain ended.
Source: NOAA National Weather Service Storm Events Database (event 5706938). 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.