Flash Flood — San Luis Obispo, California

2023-03-10 · near Adelaida, San Luis Obispo, California

Event narrative

California Highway Patrol reported Chimney Rock Road was completely washed out, due to heavy rain and flash flooding.

Wider weather episode

A second winter storm impacted Southwestern California. The heaviest rainfall impacted San Luis Obispo and Santa Barbara counties where rainfall totals ranged from 2 to 4 inches across the coast with 5 to 10 inches across the foothills and mountains. For Ventura and Los Angeles counties, rainfall totals ranged between 0.50 and 1.50 inches with local amounts up to 3 inches across the foothills. The heavy rainfall produced numerous reports of flooding across San Luis Obispo and Santa Barbara counties. Also, gusty south to southwest winds were reported across many areas.

View location on OpenStreetMap → (35.6800, -120.9400)

Source: NOAA Storm Events Database, event_id 1090774. Narrative written by the NWS forecast office that issued the report.