Upper Northwestern Fiord, Harris Bay tide predictions
59.7900, -150.0320 · NOAA station 9455204
Full daylight calendar for the Seward area → Alaska Daylight · Northern lights forecast for Seward → Alaska Aurora Forecast
Nearest buoy: Lower Cook Inlet (204) · 64 mi W — live wind & wave reports
Tide now
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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.
7-day tides
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H = high tide · L = low tide
About this station
Upper Northwestern Fiord, Harris 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.
Upper Cook Inlet has some of the largest tides on Earth — ranges past 30 ft, powerful rips, and bore tides on Turnagain Arm. Winter ice can push actual water levels well off the predictions.
2027 tide extremes
Highest predicted high tide: 13.4 ft — Fri Jan 22 · 12:53 PM
Lowest predicted low tide: -3.3 ft — Mon Jul 5 · 9:21 AM
Biggest single-day swing: 16.2 ft on Fri Jan 22
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Mon Jul 5 | 9:21 AM | -3.3 ft |
| Sun Jul 4 | 8:36 AM | -3.2 ft |
| Sun Jun 6 | 9:33 AM | -3.1 ft |
| Sat Jun 5 | 8:48 AM | -3.0 ft |
| Tue Jul 6 | 10:05 AM | -3.0 ft |
| Mon Jun 7 | 10:20 AM | -2.9 ft |
| Tue Aug 3 | 9:02 AM | -2.9 ft |
| Mon Aug 2 | 8:20 AM | -2.8 ft |
| Sat Jul 3 | 7:49 AM | -2.7 ft |
| Fri Jun 4 | 8:03 AM | -2.6 ft |
188 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.
Nearest tide stations
- Two Arm Bay, Harris Bay · 9.3 mi S
- Crater Bay, Harris Bay · 10.0 mi SE
- Camp Cove, Aialik Bay · 11.9 mi SE
- Aialik Sill, Aialik Bay · 12.7 mi NE
- Bear Cove, Aialik Peninsula · 14.5 mi E