Aug 10, 2021
A mesoscale convective system (organized thunderstorms) producing a dust storm (haboob) in the Imperial Valley, Salton Sea and Borrego deserts on the evening of August 10th. Visibility was reported as low as 1/2 mile to 1 mile observed. This was followed by hours of lightning and heavy rain in the deserts, mountains and even reaching the coast at the city of San Diego. The system brought wind gusts 40 to 50 mph, heavy rainfall up to 2 inches in the San Diego mountains and desert slopes, and cop
Source: NOAA National Weather Service Storm Events Database (event 981107). 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.