RaceAtlas

Alcatraz Island Tides: Monday, December 20, 2021

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

4.7 ft1:29 AM3.4 ft5:45 AM6.0 ft11:30 AM-0.6 ft6:36 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.0 ft at 11:30 AM, low -0.6 ft at 6:36 PM. Gate: flood 2.6 kt at 11:26 PM, ebb 1.5 kt at 3:46 PM.
Modelled current at the Golden Gate on a 2.6 kt floodThe Gate at max flood, 2.6 kt
Tide height
TimeHeight
1:29 AMHigh4.7 ft
5:45 AMLow3.4 ft
11:30 AMHigh6.0 ft
6:36 PMLow-0.6 ft
Current · Golden Gate
TimeStateSpeed
2:53 AMslack–
4:39 AMmax ebb SW (235°)0.6 kt
6:33 AMslack–
9:33 AMmax flood ENE (074°)2.3 kt
12:47 PMslack–
3:46 PMmax ebb SW (235°)1.5 kt
7:55 PMslack–
11:26 PMmax flood ENE (074°)2.6 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.