RaceAtlas

Alcatraz Island Tides: Tuesday, April 20, 2021

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

3.3 ft12:38 AM4.7 ft5:45 AM0.1 ft1:06 PM4.3 ft8:53 PM0 ft2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 4.7 ft at 5:45 AM, low 0.1 ft at 1:06 PM. Gate: flood 2.1 kt at 5:57 PM, ebb 0.9 kt at 10:22 AM.
Modelled current at the Golden Gate on a 2.1 kt floodThe Gate at max flood, 2.1 kt
Tide height
TimeHeight
12:38 AMLow3.3 ft
5:45 AMHigh4.7 ft
1:06 PMLow0.1 ft
8:53 PMHigh4.3 ft
Current · Golden Gate
TimeStateSpeed
12:33 AMslack–
3:41 AMmax flood ENE (074°)1.7 kt
7:14 AMslack–
10:22 AMmax ebb SW (235°)0.9 kt
1:52 PMslack–
5:57 PMmax flood ENE (074°)2.1 kt
10:18 PMslack–

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.