Alaska
Symonds Bay
Biorka Island · Alaska · NOAA station 9451468 · Tide predictions
56.8567, -135.5200
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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 · 26 mi SW · Station 46084
Wind & wave reports →
Last light, longer plans
Daylight calendar for Sitka → Alaska Daylight · Northern lights forecast for Sitka → Alaska Aurora Forecast
Nearby tide stations
- Golf Island, Necker Island · 6.8 mi SE
- Sitka · 15.0 mi NE
- Dorothy Cove, Necker Bay · 19.3 mi SE
- Olga Point, Olga Strait · 25.7 mi N
- Whitestone Narrows, Neva Strait · 27.2 mi N
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 12.2 ft — Fri Jan 22 · 11:53 AM
Lowest predicted low tide: -3.2 ft — Mon Jul 5 · 8:21 AM
Biggest single-day swing: 14.7 ft on Fri Jan 22
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Mon Jul 5 | 8:21 AM | -3.2 ft |
| Sun Jul 4 | 7:35 AM | -3.0 ft |
| Sun Jun 6 | 8:34 AM | -3.0 ft |
| Tue Jul 6 | 9:05 AM | -2.9 ft |
| Sat Jun 5 | 7:48 AM | -2.8 ft |
| Mon Jun 7 | 9:22 AM | -2.8 ft |
| Tue Aug 3 | 8:00 AM | -2.7 ft |
| Mon Aug 2 | 7:17 AM | -2.7 ft |
| Fri Jan 22 | 6:41 PM | -2.5 ft |
| Fri Jun 4 | 7:02 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 Symonds Bay, Biorka Island from the Sitka station: high tides adjusted -0.1 ft, 15 min earlier; low tides adjusted +0.0 ft, 16 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.