RaceAtlas

Alcatraz Island Tides: Sunday, August 22, 2021

Tide heights at Alcatraz Island with the flood, ebb and slack schedule at the Golden Gate.

-0.7 ft6:21 AM5.3 ft1:18 PM2.2 ft6:20 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.3 ft at 1:18 PM, low -0.7 ft at 6:21 AM. Gate: flood 3.4 kt at 10:42 AM, ebb 1.9 kt at 4:58 AM.
Modelled current at the Golden Gate on a 3.4 kt floodThe Gate at max flood, 3.4 kt
Tide height
TimeHeight
6:21 AMLow-0.7 ft
1:18 PMHigh5.3 ft
6:20 PMLow2.2 ft
Current · Golden Gate
TimeStateSpeed
12:55 AMslack–
4:58 AMmax ebb SW (235°)1.9 kt
7:32 AMslack–
10:42 AMmax flood ENE (074°)3.4 kt
2:26 PMslack–
5:26 PMmax ebb SW (235°)1.5 kt
7:35 PMslack–
10:28 PMmax flood ENE (074°)3.0 kt

Not for navigation. These are harmonic predictions, not live measurements. Tide heights: station 9414792 (Alcatraz Island). Currents: station SFB1203 (San Francisco Bay Entrance, Golden Gate). · RaceAtlas, the SF Bay current atlas.