OFFICIAL · Severe weather

Coastal Flood Advisory issued October 11 at 8:45PM PDT until October 13 at 3:00PM PDT by NWS San Francisco CA

Observed Oct 12 2026, 03:45 UTC · Updated Oct 12 2026, 03:47 UTC

* WHAT...Up to 1.5 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...Bayshore locations along the San Francisco and Monterey Bays. * WHEN...Until 3 PM PDT Tuesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. High tides will result in flooding along coastal trails, cut off access to some low- lying beaches and coastal areas, and bring water and waves farther up the beach than typical. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.5 ft above normal (7.3 ft MLLW) at 12:46 PM Monday 10/12, and 1.4 ft above normal (7.2 ft MLLW) at 1:14 PM Tuesday 10/13. These predictions include up to 1.5 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively. If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

Location 37.465, -121.979. ARC Warning did not create the underlying report.

Sources

• OFFICIAL

  nws

  Coastal Flood Advisory issued October 11 at 8:45PM PDT until October 13 at 3:00PM PDT by NWS San Francisco CA

  Oct 12 2026, 03:45 UTC

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