Pacific Northwest
Armitage Island
Thatcher Pass · Washington · NOAA station 9449932 · Tide predictions
48.5350, -122.7970
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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
Se'lhaem Bellingham Bay buoy · 17 mi NE · Station 46118
Wind & wave reports →
Nearby tide stations
- Strawberry Bay, Cypress Island · 4.0 mi NE
- Tide Point, Cypress Island · 4.2 mi NE
- Upright Head, Lopez Island · 4.8 mi NW
- Ship Harbor, Fidalgo Island · 5.8 mi E
- TELEGRAPH BAY, PUGET SOUND · 6.3 mi S
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 9.1 ft — Mon Dec 27 · 6:22 AM
Lowest predicted low tide: -3.7 ft — Sun Jul 4 · 11:02 AM
Biggest single-day swing: 12.1 ft on Sun Jun 6
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Sun Jul 4 | 11:02 AM | -3.7 ft |
| Sun Jun 6 | 12:04 PM | -3.6 ft |
| Sat Jun 5 | 11:18 AM | -3.6 ft |
| Sat Jul 3 | 10:16 AM | -3.5 ft |
| Mon Jul 5 | 11:49 AM | -3.4 ft |
| Mon Jun 7 | 12:52 PM | -3.3 ft |
| Fri Jun 4 | 10:35 AM | -3.2 ft |
| Fri Jul 2 | 9:31 AM | -3.0 ft |
| Sun Aug 1 | 10:00 AM | -2.9 ft |
| Sat May 8 | 12:22 PM | -2.9 ft |
199 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
Armitage Island, Thatcher Pass 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.
Puget Sound and the Columbia estuary amplify mixed tides far inland — ranges past 10 ft in the South Sound — with river flow stacked on top.