RaceAtlas

Alcatraz Island Tides: Sunday, April 21, 2030

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

6.4 ft2:08 AM-1.3 ft8:59 AM4.7 ft4:13 PM2.5 ft8:54 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.4 ft at 2:08 AM, low -1.3 ft at 8:59 AM. Gate: flood 3.3 kt at 12:01 AM, ebb 1.8 kt at 5:50 AM.
Modelled current at the Golden Gate on a 3.3 kt floodThe Gate at max flood, 3.3 kt
Tide height
TimeHeight
2:08 AMHigh6.4 ft
8:59 AMLow-1.3 ft
4:13 PMHigh4.7 ft
8:54 PMLow2.5 ft
Current · Golden Gate
TimeStateSpeed
12:01 AMmax flood ENE (074°)3.3 kt
3:05 AMslack–
5:50 AMmax ebb SW (235°)1.8 kt
10:09 AMslack–
1:19 PMmax flood ENE (074°)2.9 kt
5:22 PMslack–
7:45 PMmax ebb SW (235°)1.0 kt
9:55 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.