RaceAtlas

Alcatraz Island Tides: Friday, April 17, 2026

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

-0.7 ft6:14 AM4.9 ft12:58 PM1.6 ft6:05 PM0 ft2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 4.9 ft at 12:58 PM, low -0.7 ft at 6:14 AM. Gate: flood 3.4 kt at 10:09 PM, ebb 1.9 kt at 3:44 AM.
Modelled current at the Golden Gate on a 3.4 kt floodThe Gate at max flood, 3.4 kt
Tide height
TimeHeight
6:14 AMLow-0.7 ft
12:58 PMHigh4.9 ft
6:05 PMLow1.6 ft
Current · Golden Gate
TimeStateSpeed
12:45 AMslack–
3:44 AMmax ebb SW (235°)1.9 kt
7:26 AMslack–
10:28 AMmax flood ENE (074°)3.1 kt
2:08 PMslack–
4:29 PMmax ebb SW (235°)1.3 kt
7:02 PMslack–
10:09 PMmax flood ENE (074°)3.4 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.