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Updated:November 7, 2025 6:31 am PST

Coastal Flood Advisory COASTAL FLOOD ADVISORY  
Contra Costa County

  Effective: Fri, 11/7 4:08am Severity: Minor
  Updated: November 7, 2025 6:31 am Urgency: Expected
  Expires: Fri, 11/7 3:00pm Certainty: Likely

Areas Affected: North Bay Interior Valleys - San Francisco Bay Shoreline
 
Alert Details:
* WHAT...Up to 1.2 ft of inundation above ground level is
possible in low lying areas near shorelines and tidal
waterways.

* WHERE...Bayshore locations along the San Francisco Bay and San
Pablo Bay.

* WHEN...Until 2 PM PST Saturday.

* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected.

* ADDITIONAL DETAILS...At the San Francisco tidal gauge high
tide is expected to be 1.1 ft above normal (7.0 ft MLLW) at
11:42 AM Friday, and 0.9 ft above normal (6.7 ft MLLW) at
12:31 PM Saturday. High tide timing varies up to 90 minutes
earlier or later along the coast and throughout the Bay
respectively.

Information:
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.