RaceAtlas

Alcatraz Island Tides: Tuesday, May 18, 2021

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

4.8 ft4:01 AM-0.2 ft11:16 AM4.4 ft7:10 PM0 ft2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 4.8 ft at 4:01 AM, low -0.2 ft at 11:16 AM. Gate: flood 2.3 kt at 3:40 PM, ebb 1.2 kt at 8:37 AM.
Modelled current at the Golden Gate on a 2.3 kt floodThe Gate at max flood, 2.3 kt
Tide height
TimeHeight
4:01 AMHigh4.8 ft
11:16 AMLow-0.2 ft
7:10 PMHigh4.4 ft
Current · Golden Gate
TimeStateSpeed
2:18 AMmax flood ENE (074°)1.9 kt
5:27 AMslack–
8:37 AMmax ebb SW (235°)1.2 kt
12:12 PMslack–
3:40 PMmax flood ENE (074°)2.3 kt
8:45 PMslack–
10:37 PMmax ebb SW (235°)0.5 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.