RaceAtlas

Alcatraz Island Tides: Sunday, December 12, 2021

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

0.8 ft12:03 AM5.6 ft7:07 AM1.6 ft1:31 PM4.1 ft7:15 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.6 ft at 7:07 AM, low 0.8 ft at 12:03 AM. Gate: flood 2.8 kt at 4:21 AM, ebb 1.4 kt at 11:39 AM.
Modelled current at the Golden Gate on a 2.8 kt floodThe Gate at max flood, 2.8 kt
Tide height
TimeHeight
12:03 AMLow0.8 ft
7:07 AMHigh5.6 ft
1:31 PMLow1.6 ft
7:15 PMHigh4.1 ft
Current · Golden Gate
TimeStateSpeed
12:31 AMslack–
4:21 AMmax flood ENE (074°)2.8 kt
8:18 AMslack–
11:39 AMmax ebb SW (235°)1.4 kt
2:02 PMslack–
5:09 PMmax flood ENE (074°)2.0 kt
8:24 PMslack–
10:44 PMmax ebb SW (235°)0.9 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.