RaceAtlas

Alcatraz Island Tides: Friday, April 30, 2021

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

6.4 ft2:08 AM-1.4 ft9:05 AM4.6 ft4:26 PM2.9 ft8:56 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.4 ft at 2:08 AM, low -1.4 ft at 9:05 AM. Gate: flood 3.2 kt at 12:05 AM, ebb 1.8 kt at 5:52 AM.
Modelled current at the Golden Gate on a 3.2 kt floodThe Gate at max flood, 3.2 kt
Tide height
TimeHeight
2:08 AMHigh6.4 ft
9:05 AMLow-1.4 ft
4:26 PMHigh4.6 ft
8:56 PMLow2.9 ft
Current · Golden Gate
TimeStateSpeed
12:05 AMmax flood ENE (074°)3.2 kt
3:09 AMslack–
5:52 AMmax ebb SW (235°)1.8 kt
10:14 AMslack–
1:27 PMmax flood ENE (074°)2.9 kt
5:30 PMslack–
7:48 PMmax ebb SW (235°)1.0 kt
9:56 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.