Know the Tide

Know the tide.

Alaska

Sand Bay

Great Sitkin Island · Alaska · NOAA station 9461453 · Tide predictions

· Hawaii–Aleutian Time · Feet / MLLW (mean lower low water)

51.9733, -176.0850

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48-hour outlook

Drag across the curve to inspect any time. Weather icons show the forecast at each high tide.

The next seven days

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H = high tide · L = low tide · highs & lows in local time

On the water nearby

Last light, longer plans
Daylight calendar for Adak → Alaska Daylight · Northern lights forecast for Adak → Alaska Aurora Forecast

Nearby tide stations

Plan ahead

2027 tide extremes for this station

Highest predicted high tide: 5.3 ft — Wed Jan 20 · 12:04 PM

Lowest predicted low tide: -1.7 ft — Sun Jun 6 · 1:15 PM

Biggest single-day swing: 6.5 ft on Wed Jan 20

Best daytime minus tides of 2027
DateLow tideHeight
Sun Jun 61:15 PM-1.7 ft
Mon Jun 72:04 PM-1.7 ft
Sun Jul 412:04 PM-1.7 ft
Sat Jun 512:25 PM-1.6 ft
Sat Jul 311:14 AM-1.6 ft
Mon Jul 512:53 PM-1.6 ft
Sun May 92:27 PM-1.5 ft
Mon May 103:17 PM-1.5 ft
Tue Jun 82:51 PM-1.4 ft
Fri Jun 411:36 AM-1.4 ft

220 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 Sand Bay, Great Sitkin Island from the Sweeper Cove, Kuluk Bay, Adak Island station: high tides about 0.97× the height, 5 min earlier; low tides about 0.97× the height, 20 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.

RegionAlaska