RaceAtlas

Alcatraz Island Tides: Friday, August 20, 2021

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

-0.8 ft4:54 AM5.1 ft12:01 PM2.8 ft4:42 PM6.7 ft10:45 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.7 ft at 10:45 PM, low -0.8 ft at 4:54 AM. Gate: flood 3.0 kt at 9:21 AM, ebb 1.8 kt at 3:46 AM.
Modelled current at the Golden Gate on a 3.0 kt floodThe Gate at max flood, 3.0 kt
Tide height
TimeHeight
4:54 AMLow-0.8 ft
12:01 PMHigh5.1 ft
4:42 PMLow2.8 ft
10:45 PMHigh6.7 ft
Current · Golden Gate
TimeStateSpeed
3:46 AMmax ebb SW (235°)1.8 kt
6:05 AMslack–
9:21 AMmax flood ENE (074°)3.0 kt
1:00 PMslack–
3:42 PMmax ebb SW (235°)1.1 kt
5:38 PMslack–
8:43 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.