RaceAtlas

Alcatraz Island Tides: Thursday, April 22, 2021

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

2.5 ft2:45 AM4.7 ft8:13 AM-0.1 ft2:54 PM4.9 ft9:59 PM0 ft2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 4.9 ft at 9:59 PM, low -0.1 ft at 2:54 PM. Gate: flood 2.8 kt at 7:08 PM, ebb 1.2 kt at 12:32 PM.
Modelled current at the Golden Gate on a 2.8 kt floodThe Gate at max flood, 2.8 kt
Tide height
TimeHeight
2:45 AMLow2.5 ft
8:13 AMHigh4.7 ft
2:54 PMLow-0.1 ft
9:59 PMHigh4.9 ft
Current · Golden Gate
TimeStateSpeed
12:58 AMmax ebb SW (235°)0.8 kt
3:17 AMslack–
6:05 AMmax flood ENE (074°)1.8 kt
9:44 AMslack–
12:32 PMmax ebb SW (235°)1.2 kt
3:41 PMslack–
7:08 PMmax flood ENE (074°)2.8 kt
11:15 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.