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Alcatraz Island, 0.2 mile west of

Alcatraz Island, 0.2 mile west of Currents

The current is flooding at 2.1 kt. Next slack water at 4:32 PM. Smooth water, SSW wind at 9 kt with gusts to 12 kt.

Last Current - Flood

1:26 PM

PDT

ENE

2.2 kt

30 minutes ago

Next Current - Slack

4:32 PM

PDT

2 hours, 35 minutes from now

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Following Current - Ebb

7:25 PM

PDT

W

2.4 kt

5 hours, 28 minutes from now

Today

🌊 Currents

Flood

1:44 AM

ENE

2.3 kt

Slack

5:35 AM

Ebb

7:56 AM

W

1.3 kt

Slack

10:10 AM

Flood

1:26 PM

ENE

2.2 kt

Slack

4:32 PM

Ebb

7:25 PM

W

2.4 kt

Slack

11:46 PM

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Tomorrow

🌊 Currents

Flood

2:37 AM

ENE

2.1 kt

Slack

6:40 AM

Ebb

8:49 AM

W

0.9 kt

Slack

10:45 AM

Flood

2:08 PM

ENE

1.8 kt

Slack

5:07 PM

Ebb

7:54 PM

W

2.1 kt

🌤️ Marine Weather

Thursday - September 17, 2026

🌊 Currents

Slack

12:26 AM

Flood

3:32 AM

ENE

1.8 kt

Slack

7:53 AM

Ebb

9:46 AM

W

0.7 kt

Slack

11:27 AM

Flood

2:54 PM

ENE

1.4 kt

Slack

5:45 PM

Ebb

8:30 PM

W

1.7 kt

🌤️ Marine Weather

Friday - September 18, 2026

🌊 Currents

Slack

1:11 AM

Flood

4:33 AM

ENE

1.6 kt

Slack

9:06 AM

Ebb

10:45 AM

W

0.6 kt

Slack

12:23 PM

Flood

3:46 PM

ENE

1.0 kt

Slack

6:33 PM

Ebb

9:20 PM

W

1.2 kt

🌤️ Marine Weather

Saturday - September 19, 2026

🌊 Currents

Slack

2:12 AM

Flood

5:42 AM

ENE

1.6 kt

Slack

10:07 AM

Ebb

11:45 AM

W

0.6 kt

Slack

1:38 PM

Flood

4:46 PM

ENE

0.8 kt

Slack

7:41 PM

Ebb

10:39 PM

W

0.9 kt

🌤️ Marine Weather

Sunday - September 20, 2026

🌊 Currents

Slack

3:23 AM

Flood

6:48 AM

ENE

1.6 kt

Slack

10:55 AM

Ebb

12:42 PM

W

0.8 kt

Slack

3:03 PM

Flood

5:53 PM

ENE

0.8 kt

Slack

9:07 PM

🌤️ Marine Weather

Monday - September 21, 2026

🌊 Currents

Ebb

12:31 AM

W

0.9 kt

Slack

4:23 AM

Flood

7:37 AM

ENE

1.7 kt

Slack

11:33 AM

Ebb

1:31 PM

W

1.0 kt

Slack

4:12 PM

Flood

6:58 PM

ENE

1.0 kt

Slack

10:19 PM

🌤️ Marine Weather

7-Day Insights

Current Extremes

Fastest Flood

Tue, Sep 15

2.3 kt at 1:44 AM

Typical

Fastest Ebb

Tue, Sep 15

2.4 kt at 7:25 PM

Faster than usual

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Peak Daily Currents

Fastest

Tue, Sep 15

2.4 kt max current

Typical

Slowest

Fri, Sep 18

1.6 kt max current

Slower than usual