Aug 17, 2000
Thunderstorms developed on both mountain ranges forming the Vallecito Creek watershed. The outflow from these formed another thunderstorm that moved slowly downstream. An automated remote weather station the Fish Creek Mountains measured a wind gust of 74 mph, a temperature drop of 32 degrees Fahrenheit, and 1.24 inches of rain in less than an hour. Nearly two hours after the rain ended, eight inches of water was still covering Split Mountain Road near it's junction with Fish Creek.
Source: NOAA National Weather Service Storm Events Database (event 5155046). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in San Diego County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.