Nov 20, 2019
A closed upper low pressure system, combined with remnant tropical cyclone moisture, brought heavy rain and mountain snow to southern California. Across the area, 1 to 4 inches of rain fell, which was heaviest on the 19th and 20th. Rainfall rates of 0.50 to 1 inch per hour observed which caused impacts to many areas including Valley Center, Alpine and the Mexico border. A waterspout was spotted (photo) just west of San Clemente and Dana Point (LA waters) on the 20th, with another possible waters
Source: NOAA National Weather Service Storm Events Database (event 866198). 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.