RaceAtlas

Alcatraz Island Tides: Thursday, August 19, 2021

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

-0.6 ft4:05 AM4.9 ft11:18 AM3.0 ft3:46 PM6.7 ft9:51 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.7 ft at 9:51 PM, low -0.6 ft at 4:05 AM. Gate: flood 2.8 kt at 7:41 PM, ebb 1.5 kt at 2:58 AM.
Modelled current at the Golden Gate on a 2.8 kt floodThe Gate at max flood, 2.8 kt
Tide height
TimeHeight
4:05 AMLow-0.6 ft
11:18 AMHigh4.9 ft
3:46 PMLow3.0 ft
9:51 PMHigh6.7 ft
Current · Golden Gate
TimeStateSpeed
2:58 AMmax ebb SW (235°)1.5 kt
5:13 AMslack–
8:33 AMmax flood ENE (074°)2.8 kt
12:12 PMslack–
2:44 PMmax ebb SW (235°)0.9 kt
4:36 PMslack–
7:41 PMmax flood ENE (074°)2.8 kt
11:07 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.