Alaska
Sweeper Cove
Kuluk Bay, Adak Island · Alaska · NOAA station 9461380 · Tide predictions
51.8606, -176.6376
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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
Last light, longer plans
Daylight calendar for Adak → Alaska Daylight · Northern lights forecast for Adak → Alaska Aurora Forecast
Nearby tide stations
- Unalga Bight · 9.1 mi SW
- Laska Cove, Kagalaska Island · 10.4 mi E
- Adak Bight · 10.7 mi SE
- Boot Bay · 11.2 mi SE
- Bay of Waterfalls · 17.1 mi SW
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 5.5 ft — Wed Jan 20 · 12:09 PM
Lowest predicted low tide: -1.8 ft — Sun Jun 6 · 1:35 PM
Biggest single-day swing: 6.7 ft on Wed Jan 20
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Sun Jun 6 | 1:35 PM | -1.8 ft |
| Mon Jun 7 | 2:24 PM | -1.7 ft |
| Sun Jul 4 | 12:24 PM | -1.7 ft |
| Sat Jun 5 | 12:45 PM | -1.7 ft |
| Sat Jul 3 | 11:34 AM | -1.6 ft |
| Mon Jul 5 | 1:13 PM | -1.6 ft |
| Sun May 9 | 2:47 PM | -1.6 ft |
| Mon May 10 | 3:37 PM | -1.5 ft |
| Tue Jun 8 | 3:11 PM | -1.5 ft |
| Fri Jun 4 | 11:56 AM | -1.4 ft |
220 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
Sweeper Cove, Kuluk Bay, Adak 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.