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Updated:November 7, 2026 7:15 am PST

Coastal Flood Advisory COASTAL FLOOD ADVISORY  
Alameda County

  Effective: Fri, 11/6 6:31pm Severity: Minor
  Updated: November 7, 2026 7:15 am Urgency: Expected
  Expires: Sat, 11/7 12:00pm Certainty: Likely

Areas Affected: North Bay Interior Valleys - San Francisco Bay Shoreline
 
Alert Details:
* WHAT...Up to 1.6 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 4 PM PST Friday November 13.

* IMPACTS...High tides will result in flooding of low-lying
infrastructure, isolated road closures, and coastal erosion.
Rising tides will bring water and waves farther up the beach
than normal, restricting escape from beaches and coastal areas.

* ADDITIONAL DETAILS...At the San Francisco tide gauge, high
tide is expected to be: 1.6 ft above normal (7.4 ft MLLW) at
9:38 AM Saturday 11/7, 1.6 ft above normal (7.4 ft MLLW) at
10:06 AM Sunday 11/8, 1.6 ft above normal (7.4 ft MLLW) at
10:35 AM Monday 11/9, 1.5 ft above normal (7.3 ft MLLW) at
11:04 AM Tuesday 11/10, 1.4 ft above normal (7.2 ft MLLW) at
11:35 AM Wednesday 11/11, 1.4 ft above normal (7.2 ft MLLW) at
12:10 PM Thursday 11/12, 1.2 ft above normal (7.0 ft MLLW) at
12:49 PM Friday 11/13. 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.

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.