Alaska
Perry Island (South Bay)
Alaska · NOAA station 9454721 · Tide predictions
60.6717, -147.9320
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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
Western Prince William Sound buoy · 15 mi NW · Station 46081
Wind & wave reports →
Last light, longer plans
Daylight calendar for Valdez → Alaska Daylight · Northern lights forecast for Valdez → Alaska Aurora Forecast
Nearby tide stations
- Applegate Island · 8.6 mi SW
- Culross Bay, Wells Passage · 9.4 mi NW
- Long Bay Entrance, Culross Passage · 11.3 mi W
- Cochrane Bay · 14.4 mi W
- Herring Point · 14.4 mi S
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 14.7 ft — Fri Jan 22 · 12:48 PM
Lowest predicted low tide: -3.4 ft — Mon Jul 5 · 9:06 AM
Biggest single-day swing: 17.8 ft on Fri Jan 22
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Mon Jul 5 | 9:06 AM | -3.4 ft |
| Sun Jul 4 | 8:20 AM | -3.4 ft |
| Sun Jun 6 | 9:19 AM | -3.3 ft |
| Sat Jun 5 | 8:33 AM | -3.3 ft |
| Tue Jul 6 | 9:51 AM | -3.0 ft |
| Mon Aug 2 | 8:04 AM | -3.0 ft |
| Mon Jun 7 | 10:06 AM | -2.9 ft |
| Tue Aug 3 | 8:46 AM | -2.9 ft |
| Sat Jul 3 | 7:34 AM | -2.9 ft |
| Fri Jun 4 | 7:48 AM | -2.9 ft |
183 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
Perry Island (South Bay) 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.