Station Name: SAN FRANCISCO BAY 2.8 MI N OF SAN MATEO BRIDGE CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
San Francisco Bay
San Mateo, CA 94401
San Mateo County

GPS Coordinates: 37.63078889, -122.2432

Nearby Water Temperatures

Coastal Flood Advisory issued December 31 at 12:27AM PST until January 4 at 2:00PM PST by NWS San Francisco CA

Effective: Wed December 31, 2025, 12:27 AM
Expires: Wed December 31, 2025, 2:00 PM

* WHAT...Up to 2.2 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...San Francisco Bay and San Pablo Bay shoreline, Monterey Bay shoreline, and the Pacific Coast. * WHEN...From 5 AM Wednesday to 2 PM PST Sunday. * 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: 1.5 ft above normal (7.3 ft MLLW) at 7:51 AM Wednesday 12/31 2.0 ft above normal (7.8 ft MLLW) at 8:41 AM Thursday 1/1 2.2 ft above normal (8.0 ft MLLW) at 9:34 AM Friday 1/2 2.2 ft above normal (8.0 ft MLLW) at 10:26 AM Saturday 1/3 1.8 ft above normal (7.6 ft MLLW) at 11:18 AM Sunday 1/4 These predictions include up to 1.0 feet 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.

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.

Coastal Flood Advisory issued December 31 at 12:30PM PST until January 4 at 2:00PM PST by NWS San Francisco CA

Effective: Wed December 31, 2025, 12:30 PM
Expires: Thu January 1, 2026, 5:00 AM

* WHAT...Up to 2.2 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. * WHERE...San Francisco Bay and San Pablo Bay shoreline, Monterey Bay shoreline, and the Pacific Coast. * WHEN...Until 2 PM PST Sunday. * 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: 2.0 ft above normal (7.8 ft MLLW) at 8:41 AM Thursday 1/1 2.2 ft above normal (8.0 ft MLLW) at 9:34 AM Friday 1/2 2.2 ft above normal (8.0 ft MLLW) at 10:26 AM Saturday 1/3 1.8 ft above normal (7.6 ft MLLW) at 11:18 AM Sunday 1/4 These predictions include up to 1.0 feet 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.

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.