Alaska
Blackstone Bay
Alaska · NOAA station 9454907 · Tide predictions
60.7650, -148.5230
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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 · 8 mi E · Station 46081
Wind & wave reports →
Last light, longer plans
Daylight calendar for Seward → Alaska Daylight · Northern lights forecast for Seward → Alaska Aurora Forecast
Nearby tide stations
- Whittier, Passage Canal · 4.9 mi W
- Cochrane Bay · 9.0 mi SE
- Long Bay Entrance, Culross Passage · 10.1 mi SE
- Culross Bay, Wells Passage · 12.0 mi E
- Applegate Island · 15.6 mi SE
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 14.8 ft — Fri Jan 22 · 12:46 PM
Lowest predicted low tide: -3.2 ft — Mon Jul 5 · 9:05 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 | 9:05 AM | -3.2 ft |
| Sun Jul 4 | 8:20 AM | -3.1 ft |
| Sun Jun 6 | 9:19 AM | -3.1 ft |
| Sat Jun 5 | 8:32 AM | -3.0 ft |
| Tue Jul 6 | 9:51 AM | -2.9 ft |
| Tue Aug 3 | 8:45 AM | -2.8 ft |
| Mon Jun 7 | 10:07 AM | -2.8 ft |
| Mon Aug 2 | 8:03 AM | -2.8 ft |
| Thu Jan 21 | 6:44 PM | -2.6 ft |
| Fri May 7 | 8:46 AM | -2.6 ft |
181 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
Blackstone 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.