Station Name: SOUTH SAN FRANCISCO BAY AT DUMBARTON BRIDGE CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
Dumbarton Bridge
Menlo Park, CA
San Mateo County

GPS Coordinates: 37.5041043, -122.1205192

Nearby Water Temperatures

Beach Hazards Statement issued May 17 at 6:34AM PDT until May 18 at 9:00AM PDT by NWS San Francisco CA

Effective: Sun May 17, 2026, 6:34 AM
Expires: Sun May 17, 2026, 11:00 PM

* WHAT...Strong northerly winds will generate very rough conditions at area beaches along with strong rip and longshore currents. * WHERE...Greatest impacts will be along west facing beaches of the Pacific coastline. * WHEN...Through Monday morning. * IMPACTS...Dangerous wind and wave conditions will impact beaches and water activities such as swimming, surfing, boating, and tide pooling. Rough seas can sweep up the beach and over rocks and jetties, pulling people into a cold turbulent ocean. Rip currents will be stronger than normal and long shore currents can move people and items in the water quickly away from the point of entry. Local beach and cliff erosion is possible. Water temperatures will also cool rapidly due to strong upwelling conditions during this time. Large tidal swings can cutoff access to beach walkers.

Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.

Wind Advisory issued May 17 at 1:06PM PDT until May 18 at 11:00AM PDT by NWS San Francisco CA

Effective: Sun May 17, 2026, 1:06 PM
Expires: Sun May 17, 2026, 10:00 PM

* WHAT...North to northeast winds 15 to 30 mph with gusts up to 50 mph expected. Local gusts up to 60 mph. * WHERE...The Santa Cruz Mountains, North Bay Interior Mountains, Eastern Santa Clara Hills, and East Bay Hills. * WHEN...From 11 PM this evening to 11 AM PDT Monday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

Red Flag Warning issued May 17 at 1:27AM PDT until May 18 at 8:00PM PDT by NWS Sacramento CA

Effective: Sun May 17, 2026, 1:27 AM
Expires: Sun May 17, 2026, 5:00 PM

* Winds...North winds 20 to 30 mph. Gusts 35 to 45 mph, locally up to 50 mph around the Delta and the western Sacramento Valley. * Humidity...Daytime minimum humidities of 7 to 15%. Overnight maximum relative humidities of 20 to 55%. * Highest Threat...Along and west of the Interstate 5 corridor in the Sacramento Valley. Strongest winds are expected today. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

Red Flag Warning issued May 17 at 12:07PM PDT until May 18 at 8:00PM PDT by NWS Sacramento CA

Effective: Sun May 17, 2026, 12:07 PM
Expires: Mon May 18, 2026, 4:00 PM

* Winds...North winds 20 to 30 mph. Gusts 35 to 45 mph, locally up to 50 mph around the Delta and the western Sacramento Valley. * Humidity...Daytime minimum humidities of 7 to 15%. Overnight maximum relative humidities of 20 to 45%. * Highest Threat...Along and west of the Interstate 5 corridor in the Sacramento Valley. Strongest winds are expected today. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.