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Updated:December 1, 2025 4:16 pm PST

Coastal Flood Advisory COASTAL FLOOD ADVISORY  
Los Angeles County

  Effective: Sun, 11/30 10:05pm Severity: Minor
  Updated: December 1, 2025 4:16 pm Urgency: Expected
  Expires: Mon, 12/1 7:00pm Certainty: Likely

Areas Affected: North Bay Interior Valleys - San Francisco Bay Shoreline
 
Alert Details:
* WHAT...Up to 1.4 ft of inundation above ground level is
possible in low lying areas near shorelines and tidal waterways.

* WHERE...North Bay Interior Valleys and San Francisco Bay
Shoreline Counties.

* WHEN...From 6 AM Tuesday to 3 PM PST Sunday.

* 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 0.8 ft above normal (6.66 ft MLLW) at 8:24 AM
Tuesday, 1.2 ft above normal (7.00 ft MLLW) at 9:04 AM
Wednesday, 1.4 ft above normal (7.20 ft MLLW) at 9:48 AM
Thursday, 1.4 ft above normal (7.23 ft MLLW) at 10:35 AM Friday,
1.2 ft above normal (7.08 ft MLLW) at 11:25 AM Saturday, and 0.9
ft above normal (6.75 ft MLLW) at 12:17 PM Sunday. High tide
timing varies up to 90 minutes earlier or later along the
Pacific Coast and throughout 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.
Coastal Flood Advisory COASTAL FLOOD ADVISORY  
Marin County

  Effective: Sun, 11/30 10:05pm Severity: Minor
  Updated: December 1, 2025 4:16 pm Urgency: Expected
  Expires: Mon, 12/1 7:00pm Certainty: Likely

Areas Affected: North Bay Interior Valleys - San Francisco Bay Shoreline
 
Alert Details:
* WHAT...Up to 1.4 ft of inundation above ground level is
possible in low lying areas near shorelines and tidal waterways.

* WHERE...North Bay Interior Valleys and San Francisco Bay
Shoreline Counties.

* WHEN...From 6 AM Tuesday to 3 PM PST Sunday.

* 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 0.8 ft above normal (6.66 ft MLLW) at 8:24 AM
Tuesday, 1.2 ft above normal (7.00 ft MLLW) at 9:04 AM
Wednesday, 1.4 ft above normal (7.20 ft MLLW) at 9:48 AM
Thursday, 1.4 ft above normal (7.23 ft MLLW) at 10:35 AM Friday,
1.2 ft above normal (7.08 ft MLLW) at 11:25 AM Saturday, and 0.9
ft above normal (6.75 ft MLLW) at 12:17 PM Sunday. High tide
timing varies up to 90 minutes earlier or later along the
Pacific Coast and throughout 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.
Beach Hazards Statement BEACH HAZARDS STATEMENT  
Los Angeles County

  Effective: Sun, 11/30 10:05pm Severity:  Moderate 
  Updated: December 1, 2025 4:16 pm Urgency: Expected
  Expires: Mon, 12/1 7:00pm Certainty: Likely

Areas Affected: Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast
 
Alert Details:
* WHAT...Long period westerly swell will result in an increased
risk for sneaker waves and strong rip currents. Breaking waves
10 to 14 feet, with long lulls of 10 to 20 minutes or more
between largest sets.

* WHERE...Pacific Coast beaches.

* WHEN...Through Wednesday evening.

* IMPACTS...Sneaker waves can unexpectedly run significantly
farther up the beach than normal, including over rocks and
jetties. Rip currents are typically more frequent and stronger
in the vicinity of jetties, inlets, and piers.

Information:
Dangerous conditions are forecast along the shoreline. Hazards
include sneaker waves, strong rip currents, and large breaking
waves. Stay off the rocks and NEVER turn your back on the ocean!
Beach Hazards Statement BEACH HAZARDS STATEMENT  
Marin County

  Effective: Sun, 11/30 10:05pm Severity:  Moderate 
  Updated: December 1, 2025 4:16 pm Urgency: Expected
  Expires: Mon, 12/1 7:00pm Certainty: Likely

Areas Affected: Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast
 
Alert Details:
* WHAT...Long period westerly swell will result in an increased
risk for sneaker waves and strong rip currents. Breaking waves
10 to 14 feet, with long lulls of 10 to 20 minutes or more
between largest sets.

* WHERE...Pacific Coast beaches.

* WHEN...Through Wednesday evening.

* IMPACTS...Sneaker waves can unexpectedly run significantly
farther up the beach than normal, including over rocks and
jetties. Rip currents are typically more frequent and stronger
in the vicinity of jetties, inlets, and piers.

Information:
Dangerous conditions are forecast along the shoreline. Hazards
include sneaker waves, strong rip currents, and large breaking
waves. Stay off the rocks and NEVER turn your back on the ocean!