RaceAtlas

Alcatraz Island Tides: Thursday, May 20, 2021

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

2.7 ft1:17 AM4.4 ft6:26 AM0.1 ft1:10 PM5.0 ft8:29 PM0 ft2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 5.0 ft at 8:29 PM, low 0.1 ft at 1:10 PM. Gate: flood 2.8 kt at 5:29 PM, ebb 1.1 kt at 11:04 AM.
Modelled current at the Golden Gate on a 2.8 kt floodThe Gate at max flood, 2.8 kt
Tide height
TimeHeight
1:17 AMLow2.7 ft
6:26 AMHigh4.4 ft
1:10 PMLow0.1 ft
8:29 PMHigh5.0 ft
Current · Golden Gate
TimeStateSpeed
1:49 AMslack–
4:33 AMmax flood ENE (074°)1.6 kt
8:05 AMslack–
11:04 AMmax ebb SW (235°)1.1 kt
1:56 PMslack–
5:29 PMmax flood ENE (074°)2.8 kt
9:53 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.