Alaska
Entrance Island
Alaska · NOAA station 9451438 · Tide predictions
56.8117, -133.7870
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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
Cape Edgecumbe buoy · 87 mi W · Station 46084
Wind & wave reports →
Last light, longer plans
Daylight calendar for Petersburg → Alaska Daylight · Northern lights forecast for Petersburg → Alaska Aurora Forecast
Nearby tide stations
- The Summit · 9.1 mi S
- Kake Harbor, Keku Strait · 10.3 mi NW
- Monte Carlo Island · 19.1 mi S
- Saginaw Bay, Kuiu Island · 20.5 mi W
- Castle Islands, Duncan Canal · 26.7 mi SE
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 17.2 ft — Sat Jan 23 · 1:20 PM
Lowest predicted low tide: -3.5 ft — Fri Jan 22 · 7:09 PM
Biggest single-day swing: 20.7 ft on Fri Jan 22
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Mon Jul 5 | 8:45 AM | -3.4 ft |
| Sun Jul 4 | 7:59 AM | -3.2 ft |
| Thu Jan 21 | 6:23 PM | -3.1 ft |
| Sun Jun 6 | 8:57 AM | -3.1 ft |
| Tue Aug 3 | 8:27 AM | -3.1 ft |
| Mon Aug 2 | 7:44 AM | -3.0 ft |
| Sat Jun 5 | 8:11 AM | -3.0 ft |
| Tue Jul 6 | 9:30 AM | -3.0 ft |
| Mon Jun 7 | 9:44 AM | -2.8 ft |
| Mon Dec 13 | 6:52 PM | -2.7 ft |
180 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
Entrance Island is one of NOAA's reference tide stations — its predictions are computed directly from harmonic analysis of water levels observed here, and other nearby stations are calculated from it.
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.