Tide station · California
Alcatraz Island tides
Times are local (America/Los_Angeles, GMT-8). Predicted tides, not live water levels. Not for navigation.
Right now
Falling
Next low 7:35 PM, 1.2 ft (0.37 m), in 53 min.
Today · Thu, Nov 12
- High2:29 AM6.1 ft 1.84 m
- Low6:39 AM5.0 ft 1.52 m
- High12:24 PM7.2 ft 2.21 m
- Low7:35 PM1.2 ft 0.37 m
NOAA prediction + 1.5 ft Quiver sea-level adjustment
Next 7 days
NOAA prediction + 1.5 ft Quiver sea-level adjustment
| Day | Tides (local time, height) |
|---|---|
| Thu, Nov 12 |
|
| Fri, Nov 13 |
|
| Sat, Nov 14 |
|
| Sun, Nov 15 |
|
| Mon, Nov 16 |
|
| Tue, Nov 17 |
|
| Wed, Nov 18 |
|
Quiver adds this from water levels measured against NOAA’s California tables this season; NOAA’s own table reads 1.5 ft lower.
About this station
Alcatraz Island is a NOAA subordinate station in California: its highs and lows are offsets from San Francisco (Golden Gate). Heights are feet above mean lower low water (MLLW), plus Quiver's +1.5 ft sea-level adjustment.
Tide type: Mixed, mostly semidiurnal: two highs and two lows a day, one pair noticeably bigger than the other.
This week the biggest swing between high and low is 6.0 ft; the average swing is 2.9 ft.
Closest Quiver spot: Fort Point (San Francisco), 6 km away.
Station facts
- Station ID
- 9414792
- Source
- NOAA CO-OPS
- Type
- Subordinate station
- Reference station
- San Francisco (Golden Gate)
- Coordinates
- 37.8267, -122.4170
- Datum
- MLLW + 1.5 ft Quiver sea-level adjustment
- Tide type
- Mixed, mostly semidiurnal
- Time zone
- America/Los_Angeles
