RaceAtlas

Alcatraz Island Tides: Thursday, October 30, 2025

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

0.4 ft12:48 AM4.7 ft8:24 AM3.0 ft1:42 PM4.7 ft6:52 PM0 ft2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 4.7 ft at 8:24 AM, low 0.4 ft at 12:48 AM. Gate: flood 2.2 kt at 5:20 AM, ebb 1.1 kt at 11:12 PM.
Modelled current at the Golden Gate on a 2.2 kt floodThe Gate at max flood, 2.2 kt
Tide height
TimeHeight
12:48 AMLow0.4 ft
8:24 AMHigh4.7 ft
1:42 PMLow3.0 ft
6:52 PMHigh4.7 ft
Current · Golden Gate
TimeStateSpeed
1:18 AMslack–
5:20 AMmax flood ENE (074°)2.2 kt
10:02 AMslack–
12:05 PMmax ebb SW (235°)0.7 kt
2:04 PMslack–
4:49 PMmax flood ENE (074°)1.5 kt
8:19 PMslack–
11:12 PMmax ebb SW (235°)1.1 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.