Logo

Marin County Alerts
Noaa Logo 2
NOAA's National Weather Service
Each location shows all alerts on one page
WARNINGS - WATCHES - ADVISORIES - STATEMENTS
Updates every 15 Minutes
Alert Summary | Alert RSS Feed | Alert Archives | Icon key
Updated:November 6, 2025 11:31 pm PST

Coastal Flood Advisory COASTAL FLOOD ADVISORY  
Los Angeles County

  Effective: Thu, 11/6 5:06pm Severity: Minor
  Updated: November 6, 2025 11:31 pm Urgency: Expected
  Expires: Fri, 11/7 5:00am 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...From 8 AM Tuesday to 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.
Coastal Flood Advisory COASTAL FLOOD ADVISORY  
Marin County

  Effective: Thu, 11/6 5:06pm Severity: Minor
  Updated: November 6, 2025 11:31 pm Urgency: Expected
  Expires: Fri, 11/7 5:00am 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...From 8 AM Tuesday to 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.
Beach Hazards Statement BEACH HAZARDS STATEMENT  
Los Angeles County

  Effective: Thu, 11/6 5:06pm Severity:  Moderate 
  Updated: November 6, 2025 11:31 pm Urgency: Expected
  Expires: Fri, 11/7 5:00am Certainty: Likely

Areas Affected: Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast
 
Alert Details:
* WHAT...A long period westerly swell will result in an
increased risk for sneaker waves and rip currents with
breaking waves of 14 to 19 feet. In favored locations breaking
waves could reach 25 feet.

* WHERE...Coastal North Bay and San Francisco Peninsula Coast.

* WHEN...From 4 AM PST early this morning through Saturday
morning.

* 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:
Remain out of the water to avoid hazardous swimming conditions.
Beach Hazards Statement BEACH HAZARDS STATEMENT  
Marin County

  Effective: Thu, 11/6 5:06pm Severity:  Moderate 
  Updated: November 6, 2025 11:31 pm Urgency: Expected
  Expires: Fri, 11/7 5:00am Certainty: Likely

Areas Affected: Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast
 
Alert Details:
* WHAT...A long period westerly swell will result in an
increased risk for sneaker waves and rip currents with
breaking waves of 14 to 19 feet. In favored locations breaking
waves could reach 25 feet.

* WHERE...Coastal North Bay and San Francisco Peninsula Coast.

* WHEN...From 4 AM PST early this morning through Saturday
morning.

* 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:
Remain out of the water to avoid hazardous swimming conditions.