RaceAtlas

Alcatraz Island Tides: Thursday, April 16, 2026

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

-0.1 ft5:31 AM4.9 ft12:02 PM1.1 ft5:26 PM6.0 ft11:48 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.0 ft at 11:48 PM, low -0.1 ft at 5:31 AM. Gate: flood 3.4 kt at 9:27 PM, ebb 1.8 kt at 3:23 AM.
Modelled current at the Golden Gate on a 3.4 kt floodThe Gate at max flood, 3.4 kt
Tide height
TimeHeight
5:31 AMLow-0.1 ft
12:02 PMHigh4.9 ft
5:26 PMLow1.1 ft
11:48 PMHigh6.0 ft
Current · Golden Gate
TimeStateSpeed
12:18 AMslack–
3:23 AMmax ebb SW (235°)1.8 kt
6:42 AMslack–
9:43 AMmax flood ENE (074°)2.9 kt
1:15 PMslack–
3:41 PMmax ebb SW (235°)1.4 kt
6:15 PMslack–
9:27 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.