# HEADLINE
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COASTAL FLOOD ADVISORY IN EFFECT FROM 8 AM SATURDAY TO 3 PM PDT THURSDAY
# DETAILS
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WHAT
Up to 1.9ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways.
WHERE
Bay Shoreline locations of San Francisco Bay, Monterey Bay and Big Sur Coast.
WHEN
From 8 AM Saturday to 3 PM PDT Thursday.
IMPACTS
High tides will result in flooding of low-lying infrastructure, isolated road closures, and coastal erosion. Rising tides will bring water and waves farther up the beach than normal, restricting escape from beaches and coastal areas.
ADDITIONAL DETAILS
At the San Francisco tidal gauge, high tide is expected to be 1.1 ft above normal (6.9 ft MLLW) at 10:39 AM Saturday 10/24, 1.4 ft above normal (7.2 ft MLLW) at 11:07 AM Sunday 10/25, 1.7 ft above normal (7.5 ft MLLW) at 11:39 AM Monday 10/26, 1.8 ft above normal (7.6 ft MLLW) at 12:15 PM Tuesday 10/27, 1.9 ft above normal (7.7 ft MLLW) at 12:56 PM Wednesday 10/28, and 1.7 ft above normal (7.5 ft MLLW) at 01:43 PM Thursday 10/29. These predictions include up to 1.0 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.
ISSUED AT
Friday, October 23, 2026 at 12:45 PM PDT
ISSUED BY
National Weather Service San Francisco CA
HEADER
Coastal Hazard Message
# PRECAUTIONARY/PREPAREDNESS ACTIONS
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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.
# AREAS AFFECTED
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San Francisco Bay Shoreline, Southern Monterey Bay and Big Sur Coast, North Bay Interior Valleys, Northern Monterey Bay, San Francisco
