Alaska
Offshore St Matthew Island (GNSS Buoy)
Alaska · NOAA station 9466229 · Tide predictions
60.3942, -172.4862
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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
Nearby tide stations
- St. Matthew Island · 8.2 mi W
- Mekoryuk, Mekoryuk River Ent., Nunivak Island · 215.6 mi E
- Nelson Island, Tooksook Bay · 250.5 mi E
- Newtok, Ningliq River · 268.1 mi E
- Chefornak, Kinia River · 281.7 mi E
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 3.9 ft — Mon Jun 7 · 1:04 AM
Lowest predicted low tide: -1.0 ft — Sat Jul 3 · 3:01 PM
Biggest single-day swing: 4.8 ft on Sun Jun 6
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Sat Jul 3 | 3:01 PM | -1.0 ft |
| Sat Jun 5 | 4:08 PM | -1.0 ft |
| Sun Jul 4 | 3:56 PM | -0.9 ft |
| Sun Jun 6 | 4:55 PM | -0.9 ft |
| Fri Jul 2 | 2:04 PM | -0.8 ft |
| Fri Jun 4 | 3:21 PM | -0.8 ft |
| Mon Jul 5 | 4:48 PM | -0.8 ft |
| Sat Jul 31 | 1:46 PM | -0.7 ft |
| Sat May 8 | 5:10 PM | -0.7 ft |
| Sun Aug 1 | 2:50 PM | -0.7 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
Offshore St Matthew Island (GNSS Buoy) 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.