RaceAtlas

Alcatraz Island Tides: Saturday, December 18, 2021

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

4.6 ft12:10 AM3.1 ft4:30 AM6.1 ft10:23 AM-0.5 ft5:30 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.1 ft at 10:23 AM, low -0.5 ft at 5:30 PM. Gate: flood 2.8 kt at 10:13 PM, ebb 1.4 kt at 2:45 PM.
Modelled current at the Golden Gate on a 2.8 kt floodThe Gate at max flood, 2.8 kt
Tide height
TimeHeight
12:10 AMHigh4.6 ft
4:30 AMLow3.1 ft
10:23 AMHigh6.1 ft
5:30 PMLow-0.5 ft
Current · Golden Gate
TimeStateSpeed
1:14 AMslack–
3:09 AMmax ebb SW (235°)0.7 kt
5:14 AMslack–
8:20 AMmax flood ENE (074°)2.3 kt
11:39 AMslack–
2:45 PMmax ebb SW (235°)1.4 kt
6:43 PMslack–
10:13 PMmax flood ENE (074°)2.8 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.