RaceAtlas

Alcatraz Island Tides: Sunday, April 19, 2026

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

6.5 ft12:58 AM-1.3 ft7:47 AM4.6 ft2:57 PM2.5 ft7:30 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.5 ft at 12:58 AM, low -1.3 ft at 7:47 AM. Gate: flood 3.2 kt at 11:40 PM, ebb 2.0 kt at 4:42 AM.
Modelled current at the Golden Gate on a 3.2 kt floodThe Gate at max flood, 3.2 kt
Tide height
TimeHeight
12:58 AMHigh6.5 ft
7:47 AMLow-1.3 ft
2:57 PMHigh4.6 ft
7:30 PMLow2.5 ft
Current · Golden Gate
TimeStateSpeed
1:57 AMslack–
4:42 AMmax ebb SW (235°)2.0 kt
8:57 AMslack–
12:06 PMmax flood ENE (074°)3.1 kt
3:59 PMslack–
6:18 PMmax ebb SW (235°)1.1 kt
8:35 PMslack–
11:40 PMmax flood ENE (074°)3.2 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.