RaceAtlas

Alcatraz Island Tides: Wednesday, April 28, 2021

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

6.5 ft12:43 AM-1.3 ft7:20 AM4.9 ft2:16 PM2.0 ft7:09 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.5 ft at 12:43 AM, low -1.3 ft at 7:20 AM. Gate: flood 3.4 kt at 11:17 PM, ebb 2.1 kt at 4:27 AM.
Modelled current at the Golden Gate on a 3.4 kt floodThe Gate at max flood, 3.4 kt
Tide height
TimeHeight
12:43 AMHigh6.5 ft
7:20 AMLow-1.3 ft
2:16 PMHigh4.9 ft
7:09 PMLow2.0 ft
Current · Golden Gate
TimeStateSpeed
1:40 AMslack–
4:27 AMmax ebb SW (235°)2.1 kt
8:33 AMslack–
11:38 AMmax flood ENE (074°)3.2 kt
3:25 PMslack–
5:54 PMmax ebb SW (235°)1.3 kt
8:19 PMslack–
11:17 PMmax flood ENE (074°)3.4 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.