RaceAtlas

Alcatraz Island Tides: Thursday, July 22, 2021

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

-1.2 ft5:07 AM4.9 ft12:22 PM3.0 ft4:40 PM7.1 ft10:51 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 7.1 ft at 10:51 PM, low -1.2 ft at 5:07 AM. Gate: flood 3.1 kt at 8:49 PM, ebb 1.8 kt at 3:51 AM.
Modelled current at the Golden Gate on a 3.1 kt floodThe Gate at max flood, 3.1 kt
Tide height
TimeHeight
5:07 AMLow-1.2 ft
12:22 PMHigh4.9 ft
4:40 PMLow3.0 ft
10:51 PMHigh7.1 ft
Current · Golden Gate
TimeStateSpeed
3:51 AMmax ebb SW (235°)1.8 kt
6:23 AMslack–
9:36 AMmax flood ENE (074°)3.0 kt
1:19 PMslack–
3:46 PMmax ebb SW (235°)1.0 kt
5:43 PMslack–
8:49 PMmax flood ENE (074°)3.1 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.