Alaska
The Brothers
Alaska · NOAA station 9451785 · Tide predictions
57.2950, -133.7970
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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 · 97 mi SW · 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
- Cleveland Passage, Whitney Island · 11.9 mi SE
- Cannery Cove, Pybus Bay · 12.6 mi W
- Good Island, Gambier Bay · 13.8 mi N
- Gambier Bay (cannery wharf) · 14.4 mi NW
- Hobart Bay · 16.0 mi NE
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 17.9 ft — Sat Jan 23 · 1:21 PM
Lowest predicted low tide: -4.1 ft — Mon Jul 5 · 8:45 AM
Biggest single-day swing: 21.6 ft on Fri Jan 22
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Mon Jul 5 | 8:45 AM | -4.1 ft |
| Sun Jul 4 | 7:58 AM | -3.8 ft |
| Sun Jun 6 | 8:57 AM | -3.8 ft |
| Tue Aug 3 | 8:26 AM | -3.8 ft |
| Tue Jul 6 | 9:31 AM | -3.8 ft |
| Sat Jun 5 | 8:10 AM | -3.7 ft |
| Mon Aug 2 | 7:42 AM | -3.6 ft |
| Mon Jun 7 | 9:45 AM | -3.5 ft |
| Wed Aug 4 | 9:09 AM | -3.3 ft |
| Thu Jan 21 | 6:22 PM | -3.2 ft |
200 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
The Brothers 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.