California Minor Coastal Flood Advisory | Effective 09/08/2026 09:03

Headline: 
Coastal Flood Advisory issued September 8 at 9:03AM PDT until September 10 at 1:00AM PDT by NWS San Francisco CA
Event: 
Coastal Flood Advisory
Urgency: 
Expected
Effective: 
September 8, 2026 - 9:03am
Expires: 
September 9, 2026 - 12:00am
Description: 
* 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, San Pablo Bay, and Monterey Bay. * WHEN...From 8 PM this evening to 1 AM PDT Thursday. * 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 (6.99 ft MLLW) at 9:59 PM Tuesday 9/8 and 1.0 ft above normal (6.79 ft MLLW) at 10:54 PM Wednesday 9/9. These predictions include up to 0.6 ft 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.
Instruction: 
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.
Area Description: 
San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Forcast Office: 
NWS San Francisco CA
Sender: 
w-nws.webmaster@noaa.gov