City

Marin County

County

Marin County, CA

State

California

Location

State Route 1 north offramp / State Route 1 and low-lying Marin County roads

Category

Flooding

Severity

medium

Priority

high

Occurred On

2026-10-09 19:09:00 UTC

Published On

2026-10-09 19:09:00 UTC

Source Records

1

Source

Marin County Emergency Portal — Coastal Flood Advisory

Source URL

Open original source

Summary

CHP listed roadway flooding on State Route 1 in Marin County while the county emergency portal carried a coastal flood advisory warning of minor flooding on low-lying roads during late-morning high tides.

Verification

Occurrence Confidence

exact

Publication Confidence

exact

Verification Status

Validated — multiple official sources

Source Role

Official county emergency authority with CHP dispatch corroboration