RaceAtlas

Alcatraz Island Tides: Tuesday, April 21, 2020

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

0.7 ft5:46 AM4.6 ft12:00 PM1.1 ft5:37 PM2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 4.6 ft at 12:00 PM, low 0.7 ft at 5:46 AM. Gate: flood 2.7 kt at 9:39 PM, ebb 1.5 kt at 4:18 AM.
Modelled current at the Golden Gate on a 2.7 kt floodThe Gate at max flood, 2.7 kt
Tide height
TimeHeight
5:46 AMLow0.7 ft
12:00 PMHigh4.6 ft
5:37 PMLow1.1 ft
Current · Golden Gate
TimeStateSpeed
12:56 AMslack–
4:18 AMmax ebb SW (235°)1.5 kt
6:49 AMslack–
10:01 AMmax flood ENE (074°)2.6 kt
1:23 PMslack–
3:43 PMmax ebb SW (235°)1.1 kt
6:22 PMslack–
9:39 PMmax flood ENE (074°)2.7 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.