# Coastal Flood Advisory: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast — retained record

> Retained us-gov-api record from us-gov-api:noaa-weather.

Canonical: https://highsignal.app/data/records/21d4ec1f5e5edc6f

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source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-09-28 10:39 ingested 2026-09-29 02:54

[original source ↗](http://www.weather.gov/)

## extract

Coastal Flood Advisory — San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Severity: Minor. Certainty: Likely.
* 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...Now through 5 PM PDT Thursday.

* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected. High tides will result in
flooding along coastal trails, cut off access to some low-
lying beaches and coastal areas, and bring water and waves
farther up the beach than typical.

* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high
tide is expected to be 1.0 ft above normal (6.87 ft MLLW) at
12:57 PM Monday 9/28, 1.2 ft above normal (7.01 ft MLLW) at
1:30 PM Tuesday 9/29, 1.2 ft above normal (7.03 ft MLLW) at
2:10 PM Wednesday 9/30, and 1.1 ft above normal (6.92 ft MLLW)
at 2:58 PM Thursday 10/01. These predictions include up to 0.7
ft of 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.

## retained text

The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.