Debris Flow — San Mateo, California

2023-01-05 · near North Fair Oaks, San Mateo, California

Event narrative

A mud slide blocked the entire westbound lane of California Highway 92 west of Pilarcitos Creek Road near Half Moon Bay.

Wider weather episode

On January 4th to the 5th, a strong atmospheric river combined with a bomb cyclone led to widespread heavy rain, damaging wind gusts, and high surf across the Bay Area and Central Coast.

View location on OpenStreetMap → (37.4923, -122.3866)

Source: NOAA Storm Events Database, event_id 1078490. Narrative written by the NWS forecast office that issued the report.