< California Coastal Flood Advisory | Effective 05/18/2026 08:57

California Coastal Flood Advisory | Effective 05/18/2026 08:57

Headline: 
Coastal Flood Advisory issued May 18 at 8:57AM PDT until May 19 at 3:00AM PDT by NWS San Francisco CA
Event: 
Coastal Flood Advisory
Urgency: 
Expected
Effective: 
May 18, 2026 - 8:57am
Expires: 
May 19, 2026 - 3:00am
Description: 
* WHAT...Up to 0.8 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...North Bay Interior Valleys County. * WHEN...Until 3 AM PDT Tuesday. * 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 1:07 AM Tuesday 5/19. 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: 
North Bay Interior Valleys
Forcast Office: 
NWS San Francisco CA