RaceAtlas

Alcatraz Island Tides: Monday, April 19, 2021

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

4.8 ft4:34 AM0.2 ft12:00 PM4.1 ft8:08 PM0 ft2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 4.8 ft at 4:34 AM, low 0.2 ft at 12:00 PM. Gate: flood 1.9 kt at 5:15 PM, ebb 0.9 kt at 8:54 AM.
Modelled current at the Golden Gate on a 1.9 kt floodThe Gate at max flood, 1.9 kt
Tide height
TimeHeight
4:34 AMHigh4.8 ft
12:00 PMLow0.2 ft
8:08 PMHigh4.1 ft
Current · Golden Gate
TimeStateSpeed
2:39 AMmax flood ENE (074°)1.8 kt
5:59 AMslack–
8:54 AMmax ebb SW (235°)0.9 kt
12:52 PMslack–
5:15 PMmax flood ENE (074°)1.9 kt
9:37 PMslack–
11:03 PMmax ebb SW (235°)0.3 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.