RaceAtlas

Alcatraz Island Tides: Saturday, August 21, 2021

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

-0.8 ft5:39 AM5.2 ft12:41 PM2.5 ft5:32 PM6.6 ft11:36 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.6 ft at 11:36 PM, low -0.8 ft at 5:39 AM. Gate: flood 3.2 kt at 10:03 AM, ebb 1.9 kt at 4:26 AM.
Modelled current at the Golden Gate on a 3.2 kt floodThe Gate at max flood, 3.2 kt
Tide height
TimeHeight
5:39 AMLow-0.8 ft
12:41 PMHigh5.2 ft
5:32 PMLow2.5 ft
11:36 PMHigh6.6 ft
Current · Golden Gate
TimeStateSpeed
12:02 AMslack–
4:26 AMmax ebb SW (235°)1.9 kt
6:51 AMslack–
10:03 AMmax flood ENE (074°)3.2 kt
1:45 PMslack–
4:34 PMmax ebb SW (235°)1.3 kt
6:38 PMslack–
9:38 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.