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Updated:January 4, 2026 5:31 pm PST

Coastal Flood Advisory COASTAL FLOOD ADVISORY  
Los Angeles County

  Effective: Sun, 1/4 1:43pm Severity: Minor
  Updated: January 4, 2026 5:31 pm Urgency: Expected
  Expires: Sun, 1/4 10:00pm 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: 1.2 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.
Coastal Flood Advisory COASTAL FLOOD ADVISORY  
Marin County

  Effective: Sun, 1/4 1:43pm Severity: Minor
  Updated: January 4, 2026 5:31 pm Urgency: Expected
  Expires: Sun, 1/4 10:00pm 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: 1.2 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.
Beach Hazards Statement BEACH HAZARDS STATEMENT  
Los Angeles County

  Effective: Sun, 1/4 1:43pm Severity:  Moderate 
  Updated: January 4, 2026 5:31 pm Urgency: Expected
  Expires: Sun, 1/4 10:00pm Certainty: Likely

Areas Affected: Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast - Northern Monterey Bay - Southern Monterey Bay and Big Sur Coast
 
Alert Details:
* WHAT...For the Beach Hazards Statement, long period
northwesterly swell will result in strong rip currents, sneaker
waves, and breaking waves of up to 20 feet can be expected

* WHERE...Pacific Coast from Sonoma County to Monterey County
including the Monterey Bay.

* WHEN...For the Beach Hazards Statement, from Sunday morning
through 10 PM PST Sunday.

* IMPACTS...Dangerous conditions are forecast along the shoreline.
Hazards include sneaker waves, strong rip currents, and large
breaking waves.

Information:
Stay off of jetties, piers, rocks, and other waterside
infrastructure. Remain out of the water to avoid hazardous surf
and NEVER turn your back on the ocean. Monitor local weather,
surf and tide forecasts at www.weather.gov/mtr.
Beach Hazards Statement BEACH HAZARDS STATEMENT  
Marin County

  Effective: Sun, 1/4 1:43pm Severity:  Moderate 
  Updated: January 4, 2026 5:31 pm Urgency: Expected
  Expires: Sun, 1/4 10:00pm Certainty: Likely

Areas Affected: Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast - Northern Monterey Bay - Southern Monterey Bay and Big Sur Coast
 
Alert Details:
* WHAT...For the Beach Hazards Statement, long period
northwesterly swell will result in strong rip currents, sneaker
waves, and breaking waves of up to 20 feet can be expected

* WHERE...Pacific Coast from Sonoma County to Monterey County
including the Monterey Bay.

* WHEN...For the Beach Hazards Statement, from Sunday morning
through 10 PM PST Sunday.

* IMPACTS...Dangerous conditions are forecast along the shoreline.
Hazards include sneaker waves, strong rip currents, and large
breaking waves.

Information:
Stay off of jetties, piers, rocks, and other waterside
infrastructure. Remain out of the water to avoid hazardous surf
and NEVER turn your back on the ocean. Monitor local weather,
surf and tide forecasts at www.weather.gov/mtr.