RaceAtlas

Alcatraz Island Tides: Thursday, January 21, 2021

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

5.3 ft5:48 AM1.4 ft12:58 PM3.5 ft7:25 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.3 ft at 5:48 AM, low 1.4 ft at 12:58 PM. Gate: flood 2.1 kt at 2:58 AM, ebb 0.9 kt at 10:59 AM.
Modelled current at the Golden Gate on a 2.1 kt floodThe Gate at max flood, 2.1 kt
Tide height
TimeHeight
5:48 AMHigh5.3 ft
12:58 PMLow1.4 ft
7:25 PMHigh3.5 ft
Current · Golden Gate
TimeStateSpeed
2:58 AMmax flood ENE (074°)2.1 kt
7:25 AMslack–
10:59 AMmax ebb SW (235°)0.9 kt
1:34 PMslack–
5:24 PMmax flood ENE (074°)1.8 kt
8:46 PMslack–
10:18 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.