Alaska
Alva Bay
Revillagigedo Island · Alaska · NOAA station 9450382 · Tide predictions
55.2283, -131.1330
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48-hour outlook
Drag across the curve to inspect any time. Weather icons show the forecast at each high tide.
Drawn from the high/low predictions — NOAA publishes high/low only for this station.
The next seven days
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H = high tide · L = low tide · highs & lows in local time
On the water nearby
Central Dixon Entrance Buoy buoy · 78 mi SW · Station 46145
Wind & wave reports →
Last light, longer plans
Daylight calendar for Ketchikan → Alaska Daylight · Northern lights forecast for Ketchikan → Alaska Aurora Forecast
Nearby tide stations
- Custom House Cove, Mary Island · 9.5 mi S
- Mop Point, Thorne Arm · 11.4 mi N
- Kah Shakes Cove · 14.2 mi SE
- Boca de Quadra · 15.3 mi SE
- Metlakatla, Port Chester · 18.5 mi W
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 18.6 ft — Sat Jan 23 · 12:58 PM
Lowest predicted low tide: -4.2 ft — Mon Jul 5 · 8:21 AM
Biggest single-day swing: 22.4 ft on Sat Jan 23
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Mon Jul 5 | 8:21 AM | -4.2 ft |
| Tue Aug 3 | 8:01 AM | -4.0 ft |
| Tue Jul 6 | 9:05 AM | -3.9 ft |
| Sun Jul 4 | 7:35 AM | -3.8 ft |
| Fri Jan 22 | 6:43 PM | -3.8 ft |
| Sun Jun 6 | 8:34 AM | -3.7 ft |
| Mon Aug 2 | 7:19 AM | -3.7 ft |
| Wed Aug 4 | 8:42 AM | -3.6 ft |
| Sat Jun 5 | 7:48 AM | -3.5 ft |
| Mon Jun 7 | 9:21 AM | -3.5 ft |
199 minus tides (below 0 ft) are predicted here in 2027. The table shows up to the 10 lowest that fall between 7 AM and 7 PM — the ones worth planning a clam dig or tidepool walk around.
About this station
NOAA builds the predictions for Alva Bay, Revillagigedo Island from the Ketchikan station: high tides about the same height, 5 min earlier; low tides about 0.96× the height, 3 min earlier.
Alaska holds the country's most extreme tides: Inside Passage channels, Cook Inlet swings past 30 ft, and Arctic stations where the tide is measured in inches and wind setup runs the show.