Station Name: SAN FRANCISCO BAY A NE SHORE ALCATRAZ ISLAND CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
Alcatraz Island
San Francisco, CA 94133-1312
San Francisco County

GPS Coordinates: 37.8272222, -122.4216667

Nearby Water Temperatures

Coastal Flood Advisory issued June 14 at 2:45PM PDT until June 18 at 5:00AM PDT by NWS San Francisco CA

Effective: Sun June 14, 2026, 2:45 PM
Expires: Mon June 15, 2026, 7:00 AM

* WHAT...For the Coastal Flood Advisory, up to 1.9 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents expected. * WHERE...Low-lying coastal and bayshore areas in San Francisco. * WHEN...For the Coastal Flood Advisory, until 5 AM PDT Thursday. For the Beach Hazards Statement, through late Wednesday night. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.9 ft above normal (7.7 ft MLLW) at 11:10 PM on Sunday, 1.8 ft above normal (7.6 ft MLLW) at 12:02 AM on Tuesday, and 1.7 ft above normal (7.5 ft MLLW) at 12:56 AM on Wednesday, 1.2 ft above normal (7.1 ft MLLW) at 1:51 AM on Thursday. 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. 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.

Beach Hazards Statement issued June 14 at 2:45PM PDT until June 18 at 5:00AM PDT by NWS San Francisco CA

Effective: Sun June 14, 2026, 2:45 PM
Expires: Mon June 15, 2026, 7:00 AM

* WHAT...For the Coastal Flood Advisory, up to 1.9 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents expected. * WHERE...Low-lying coastal and bayshore areas in San Francisco. * WHEN...For the Coastal Flood Advisory, until 5 AM PDT Thursday. For the Beach Hazards Statement, through late Wednesday night. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves. * ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide is expected to be 1.9 ft above normal (7.7 ft MLLW) at 11:10 PM on Sunday, 1.8 ft above normal (7.6 ft MLLW) at 12:02 AM on Tuesday, and 1.7 ft above normal (7.5 ft MLLW) at 12:56 AM on Wednesday, 1.2 ft above normal (7.1 ft MLLW) at 1:51 AM on Thursday. 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. 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.

Flood Watch issued June 14 at 11:21AM CDT until June 16 at 7:00PM CDT by NWS Corpus Christi TX

Effective: Sun June 14, 2026, 9:21 AM
Expires: Tue June 16, 2026, 5:00 PM

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...A portion of south Texas, including the following areas, Aransas Islands, Bee, Calhoun Islands, Coastal Aransas, Coastal Calhoun, Coastal Kleberg, Coastal Nueces, Coastal Refugio, Coastal San Patricio, Duval, Goliad, Inland Calhoun, Inland Kleberg, Inland Nueces, Inland Refugio, Inland San Patricio, Jim Wells, Kleberg Islands, La Salle, Live Oak, McMullen, Nueces Islands, Victoria and Webb. * WHEN...From 7 PM CDT this evening through Tuesday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - The combination of a moist tropical airmass, a stalling front, daily seabreeze circulations, and a broad area of low pressure over eastern Mexico will result in heavy rain. Isolated pockets with rain totals of 8 inches or more are possible with rain rates that could exceed 2 inches per hour at times. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Beach Hazards Statement issued June 14 at 1:46PM CDT until June 15 at 10:00AM CDT by NWS Houston/Galveston TX

Effective: Sun June 14, 2026, 11:46 AM
Expires: Mon June 15, 2026, 1:00 AM

* WHAT...Moderate to high risk of strong rip currents. Elevated tides during times of high tide.. * WHERE...Gulf-facing beaches, including the Matagorda Peninsula, Brazoria County beaches, Galveston Island and the Bolivar Peninsula. * WHEN...Through Monday morning. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. Elevated tides could result in minor coastal flooding and isolated overwash in some spots during high tide.

Remain out of the water to avoid hazardous swimming conditions.

Flood Watch issued June 14 at 11:29AM CDT until June 17 at 7:00AM CDT by NWS Houston/Galveston TX

Effective: Sun June 14, 2026, 9:29 AM
Expires: Mon June 15, 2026, 5:00 AM

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of south central and southeast Texas, including the following areas, in south central Texas, Coastal Jackson and Inland Jackson. In southeast Texas, Austin, Bolivar Peninsula, Brazoria Islands, Brazos, Burleson, Chambers, Coastal Brazoria, Coastal Galveston, Coastal Harris, Coastal Matagorda, Colorado, Fort Bend, Galveston Island, Grimes, Houston, Inland Brazoria, Inland Galveston, Inland Harris, Inland Matagorda, Madison, Matagorda Islands, Montgomery, Northern Liberty, Polk, San Jacinto, Southern Liberty, Trinity, Walker, Waller, Washington and Wharton. * WHEN...Through Wednesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Rounds of showers and thunderstorms are expected, with period of heavy rain. Rainfall totals through Wednesday morning are between 2 to 4 inches, with isolated higher amounts of 6-8 inches. Rainfall rates are expected to range from 2-4 inches per hour at times. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.