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Coastal Flood Advisory for San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline +2 more

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What is happening

What: Up to 1.6 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. Impacts: Flooding of lots, parks, and roads with only isolated road closures expected. Where: Bayshore locations along the San Francisco Bay, San Pablo Bay, and Monterey Bay. When: Until 2 AM PDT...

What the bulletin says to do

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.

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Full official description

Bulletin details

* WHAT...Up to 1.6 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...Until 2 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 1.6 ft above normal (7.44 ft MLLW) at 10:57 PM Tuesday 8/11 and 1.4 ft above normal (7.24 ft MLLW) at 11:49 PM Wednesday 8/12. These predictions include both astronomical tides and roughly 3-6 inches of additional water mainly from a combination of thermal expansion and accumulated sea level rise since the tidal datum was established (1983- 2001). High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.

Official geometry where available

Alert boundary

Lifecycle record

Official revisions

8 captured
  1. Update

    Coastal Flood Advisory issued August 10 at 10:18PM PDT until August 13 at 2:00AM PDT by NWS San Francisco CA

    Official revision
  2. Update

    Coastal Flood Advisory issued August 9 at 9:43PM PDT until August 13 at 2:00AM PDT by NWS San Francisco CA

    Official revision
  3. Update

    Coastal Flood Advisory issued August 9 at 10:28AM PDT until August 13 at 2:00AM PDT by NWS San Francisco CA

    Official revision
  4. Update

    Coastal Flood Advisory issued August 8 at 9:29PM PDT until August 13 at 2:00AM PDT by NWS San Francisco CA

    Official revision
  5. Update

    Coastal Flood Advisory issued August 8 at 4:25PM PDT until August 13 at 2:00AM PDT by NWS San Francisco CA

    Official revision
  6. Update

    Coastal Flood Advisory issued August 8 at 6:25AM PDT until August 13 at 2:00AM PDT by NWS San Francisco CA

    Official revision
  7. Update

    Coastal Flood Advisory issued August 7 at 4:33PM PDT until August 13 at 2:00AM PDT by NWS San Francisco CA

    Official revision
  8. Alert

    Coastal Flood Advisory issued August 6 at 7:45PM PDT until August 13 at 2:00AM PDT by NWS San Francisco CA

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS San Francisco CA. This page reorganizes official fields and does not add a forecast or expand the affected area.

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