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Alcan Harbor, Shemya Island tide times

Alaska · NOAA station TWC2309 · times in local time
Tuesday, October 27: high tide 9:11 AM (3.4 ft) and 4:09 PM (3.7 ft); low tide 10:45 AM (3.3 ft) and 11:54 PM (-1.1 ft).
next high tide
9:11 AM
3.4 ft
next low tide
10:45 AM
3.3 ft
moon
–
 

Tide chart — today, Tue, Oct 27

Heights in feet above Mean Lower Low Water (MLLW). Dots are NOAA's predicted highs and lows; the line between them is our interpolation. Shaded: night.

TideTimeHeight
High tide9:11 AM3.42 ft
Low tide10:45 AM3.32 ft
High tide4:09 PM3.74 ft
Low tide11:54 PM-1.14 ft

Alcan Harbor, Shemya Island tide table — next 7 days

DayHigh tidesLow tides
Today
Tue, Oct 27		9:11 AM 3.4 ft4:09 PM 3.7 ft10:45 AM 3.3 ft11:54 PM -1.1 ft
Tomorrow
Wed, Oct 28		4:51 PM 3.9 ft—
Thu, Oct 295:41 PM 4.0 ft12:41 AM -1.3 ft
Fri, Oct 3011:32 AM 3.6 ft6:38 PM 4.0 ft1:29 AM -1.3 ft1:01 PM 3.5 ft
Sat, Oct 3112:02 PM 3.5 ft7:40 PM 3.8 ft2:18 AM -1.1 ft2:09 PM 3.3 ft
Sun, Nov 112:28 PM 3.4 ft8:50 PM 3.4 ft3:07 AM -0.8 ft3:29 PM 2.9 ft
Mon, Nov 212:52 PM 3.3 ft10:16 PM 3.0 ft3:56 AM -0.3 ft4:57 PM 2.5 ft

The year at Alcan Harbor, Shemya Island

Highest tide, next 12 months5.1 ft on December 23, 2026 at 2:00 PM
Lowest tide, next 12 months-1.6 ft on June 6, 2027 at 12:01 PM
Minus tides (below 0 ft)224 days in the next 12 months
Tide patternUsually two high and two low tides a day, with some days of only one
Typical daily range3.9 ft (30-day average)
StationNOAA TWC2309 · subordinate station · 52.7167, 174.0667

Alcan Harbor, Shemya Island is a subordinate station: NOAA computes its tides from Massacre Bay with fixed time and height corrections.

Moving water at dawn and dusk —

The current runs fastest roughly halfway between a high and a low tide. Many anglers prefer those hours when they fall near sunrise or sunset. This is a rule of thumb, not a fishing forecast.

Map

Nearby tide stations

Otkriti Bay, Agattu Island31 mi · AK Massacre Bay37 mi · AK Steller Cove52 mi · AK Gertrude Cove, Kiska Island151 mi · AK Kiska Harbor, Kiska Island154 mi · AK Constantine Harbor, Amchitka Island236 mi · AK Tanapag Harbor, Saipan Island2845 mi · MP Saipan Harbor, Saipan Island2847 mi · MP

All Alaska tide stations →

Questions about Alcan Harbor, Shemya Island tides

What time is high tide at Alcan Harbor, Shemya Island today?

On Tuesday, October 27, high tide at Alcan Harbor, Shemya Island is at 9:11 AM (3.4 ft) and 4:09 PM (3.7 ft); low tide is at 10:45 AM (3.3 ft) and 11:54 PM (-1.1 ft) (HDT, heights above MLLW). The table above lists the next 7 days.

When are the highest tides of the year at Alcan Harbor, Shemya Island?

The highest predicted tide in the next 12 months is 5.1 ft on December 23, 2026 at 2:00 PM. The largest tides fall a day or two after a full or new moon, especially when the Moon is closest to Earth.

Are there minus tides at Alcan Harbor, Shemya Island?

Yes — on 224 days in the next 12 months the low tide drops below 0 ft (MLLW). The lowest is -1.6 ft on June 6, 2027 at 12:01 PM. Minus tides expose the most shoreline, which is why tide-poolers look for them.

What time zone are these tide times in?

Station local time (HDT at the time this page was built), with daylight saving time applied where the area observes it — the same convention as NOAA's own tide tables.

Where does this tide data come from?

From NOAA CO-OPS, the U.S. government tide station network (tidesandcurrents.noaa.gov); the predictions are public domain. Alcan Harbor, Shemya Island is a subordinate station: NOAA derives its times and heights from the reference station Massacre Bay with fixed corrections. The curve between highs and lows is our interpolation. This page is not for navigation.