RaceAtlas

Alcatraz Island Tides: Friday, December 17, 2021

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

2.9 ft3:52 AM6.1 ft9:52 AM-0.4 ft4:58 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.1 ft at 9:52 AM, low -0.4 ft at 4:58 PM. Gate: flood 2.9 kt at 9:32 PM, ebb 1.4 kt at 3:26 PM.
Modelled current at the Golden Gate on a 2.9 kt floodThe Gate at max flood, 2.9 kt
Tide height
TimeHeight
3:52 AMLow2.9 ft
9:52 AMHigh6.1 ft
4:58 PMLow-0.4 ft
Current · Golden Gate
TimeStateSpeed
12:21 AMslack–
2:26 AMmax ebb SW (235°)0.8 kt
4:33 AMslack–
7:46 AMmax flood ENE (074°)2.3 kt
11:08 AMslack–
3:26 PMmax ebb SW (235°)1.4 kt
6:05 PMslack–
9:32 PMmax flood ENE (074°)2.9 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.