Alaska
Elfin Cove
Port Althorp · Alaska · NOAA station 9452634 · Tide predictions
58.1947, -136.3469
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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
Fairweather Ground buoy · 61 mi W · Station 46083
Wind & wave reports →
Last light, longer plans
Daylight calendar for Juneau → Alaska Daylight · Northern lights forecast for Juneau → Alaska Aurora Forecast
Nearby tide stations
- Inian Cove, North Inian Pass · 4.8 mi N
- Mud Bay, Goose Island · 11.4 mi E
- Miner Island · 12.8 mi S
- Graves Harbor · 13.3 mi NW
- Surge Bay · 13.9 mi SW
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 13.7 ft — Fri Jan 22 · 12:15 PM
Lowest predicted low tide: -3.3 ft — Mon Jul 5 · 8:40 AM
Biggest single-day swing: 16.5 ft on Fri Jan 22
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Mon Jul 5 | 8:40 AM | -3.3 ft |
| Sun Jul 4 | 7:54 AM | -3.1 ft |
| Tue Jul 6 | 9:24 AM | -3.0 ft |
| Sun Jun 6 | 8:53 AM | -3.0 ft |
| Tue Aug 3 | 8:19 AM | -2.9 ft |
| Sat Jun 5 | 8:06 AM | -2.9 ft |
| Mon Aug 2 | 7:37 AM | -2.9 ft |
| Mon Jun 7 | 9:41 AM | -2.8 ft |
| Sat Jul 3 | 7:07 AM | -2.6 ft |
| Wed Aug 4 | 9:00 AM | -2.5 ft |
186 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
Elfin Cove, Port Althorp 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.