Alaska
Coronation Island
Alaska · NOAA station 9450829 · Tide predictions
55.9033, -134.1180
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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 · 89 mi NW · 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
- Affleck Canal entrance, Kuiu Island · 9.2 mi N
- Pole Anchorage, Kosciusko Island · 12.4 mi E
- Point St. Albans · 13.6 mi NE
- Kell Bay, Affleck Canal, Kuiu Island · 17.1 mi N
- Edna Bay · 17.9 mi E
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 13.1 ft — Fri Jan 22 · 11:52 AM
Lowest predicted low tide: -3.2 ft — Mon Jul 5 · 8:20 AM
Biggest single-day swing: 15.6 ft on Fri Jan 22
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Mon Jul 5 | 8:20 AM | -3.2 ft |
| Sun Jul 4 | 7:34 AM | -3.0 ft |
| Sun Jun 6 | 8:33 AM | -3.0 ft |
| Tue Jul 6 | 9:04 AM | -2.9 ft |
| Sat Jun 5 | 7:47 AM | -2.8 ft |
| Mon Jun 7 | 9:21 AM | -2.8 ft |
| Tue Aug 3 | 7:59 AM | -2.7 ft |
| Mon Aug 2 | 7:16 AM | -2.7 ft |
| Fri Jan 22 | 6:40 PM | -2.5 ft |
| Fri Jun 4 | 7:01 AM | -2.4 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
NOAA builds the predictions for Coronation Island from the Sitka station: high tides adjusted +0.8 ft, 16 min earlier; low tides adjusted +0.0 ft, 17 min earlier.
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.