RaceAtlas

Alcatraz Island Tides: Wednesday, April 21, 2027

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

6.1 ft12:09 AM-0.8 ft6:46 AM4.7 ft1:36 PM2.1 ft6:29 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.1 ft at 12:09 AM, low -0.8 ft at 6:46 AM. Gate: flood 3.2 kt at 11:11 AM, ebb 1.9 kt at 4:44 AM.
Modelled current at the Golden Gate on a 3.2 kt floodThe Gate at max flood, 3.2 kt
Tide height
TimeHeight
12:09 AMHigh6.1 ft
6:46 AMLow-0.8 ft
1:36 PMHigh4.7 ft
6:29 PMLow2.1 ft
Current · Golden Gate
TimeStateSpeed
1:19 AMslack–
4:44 AMmax ebb SW (235°)1.9 kt
8:02 AMslack–
11:11 AMmax flood ENE (074°)3.2 kt
2:43 PMslack–
5:12 PMmax ebb SW (235°)1.3 kt
7:39 PMslack–
10:38 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.