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Updated:January 4, 2026 7:31 am PST

Coastal Flood Advisory COASTAL FLOOD ADVISORY  
Alameda County

  Effective: Sun, 1/4 1:35am Severity: Minor
  Updated: January 4, 2026 7:31 am Urgency: Expected
  Expires: Sun, 1/4 2:00pm Certainty: Likely

Areas Affected: North Bay Interior Valleys - San Francisco Bay Shoreline
 
Alert Details:
* WHAT...Up to 2 ft of inundation above ground level is possible
in low-lying near shorelines and tidal waterways.

* WHERE...Areas adjacent to the San Francisco and San Pablo Bays.

* WHEN...Until 3 PM PST Monday.

* 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:
1.9 ft above normal (7.7 ft MLLW) at 11:18 AM Sunday 1/4
1.2 ft above normal (7.0 ft MLLW) at 12:08 PM Monday 1/5
These predictions include up to 1 foot of storm 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.

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.