Unavikshak Island Tides Today
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Unavikshak Island runs a mean tidal range of about 6.6 ft. This month the highest water, 11.9 ft, comes on the afternoon of Nov 25, and the lowest, a -2.6 ft minus tide, on the evening of Nov 25.
| Low tide | 3:28 AM | 1.2 ft |
| High tide | 10:07 AM | 7.7 ft |
| Low tide | 4:14 PM | 3.6 ft |
| High tide | 9:50 PM | 7.5 ft |
Today on the water at Unavikshak Island
Today at Unavikshak Island: high tide at 10:07 AM (7.7 ft) and 9:50 PM (7.5 ft), low tide at 3:28 AM (1.2 ft) and 4:14 PM (3.6 ft). The National Weather Service forecast for Tuesday is light rain likely then chance rain showers with SE winds 10 mph, 45°F. In effect now: Small Craft Advisory. Sunrise is at 8:42 AM and sunset at 5:47 PM.
| Period | Forecast | Wind | Temp |
|---|---|---|---|
| Overnight | Chance Light Rain | SE 10 to 15 mph | 44°F |
| Tuesday | Light Rain Likely then Chance Rain Showers | SE 10 mph | 45°F |
Forecast: National Weather Service point forecast for this location.
Where Unavikshak Island is
Unavikshak Island sits at 56.4917° N, 157.7400° W on the Alaska Peninsula and Shumagin Islands, about 26 mi northeast of Chignik, AK. The station here is a subordinate tide prediction point. NOAA has no gauge in the water at this spot; its times and heights are published as offsets from a reference gauge, named below. The closest gauge measuring live water level is Port Moller (NOAA 9463502), 114.3 mi away, and high and low water here run on average about 237 min later than there. The nearest weather station is Chignik, Chignik Airport, an airport reporting wind, visibility and sky cover, but no water temperature, 27.2 mi away.
The tide at Unavikshak Island
Unavikshak Island has a mixed tide: two highs and two lows a day, but of unequal size, so one low each day drains noticeably lower than the other. This month's predictions average 1.9 high tides a day here. The mean range from lower low to higher high is 9.1 ft, and 6.9 ft between the average high and the average low, a large tide. On an average day the higher high tops the lower high by 0.8 ft and the lower low sits 1.4 ft below the other low. For the water around it: Tides here are mixed: 8 to 12 ft and semidiurnal on the Pacific side of the peninsula, smaller and closer to one high a day on the Bristol Bay side.
About this station
- High tide reaches Unavikshak Island about 11.2 hours after the moon passes overhead. That lag is local, which is why high water does not line up with the moon.
- NOAA predicts tides here from Kodiak, Womens Bay, station 9457292. High tide comes about 31 min later and low tide about 44 min later than there.
- High tide heights run about 1.05 times the reference.
Datum and source
Heights on this page are feet above mean lower low water (MLLW), the zero NOAA's nautical charts use for soundings. A predicted 0.0 ft low is the average of the lower low each day; a minus tide is water below chart datum, and a 2 ft high means 2 ft more water than the chart shows. NOAA fixes MLLW at Unavikshak Island from the 1983-2001 National Tidal Datum Epoch; mean higher high water is 9.1 ft above it and mean sea level 4.7 ft. These datums are controlled from NOAA's Sand Point, AK gauge. Source: NOAA CO-OPS station 9458762, established 1997, gauge removed 1997. The tide times and heights are published as time and height offsets from its reference gauge; TidalMap republishes them daily and does not alter them.
Tide stations near Unavikshak Island
- Aniakchak Bay: 20.5 mi, tides at about the same time
- Kupreanof Harbor, Paul Island: 78.7 mi, tides about 10 min earlier
- Ivanof Bay: 78.8 mi, tides at about the same time
- Port Moller: 114.3 mi, tides about 237 min earlier
- Zachary Bay, Unga Island: 137.1 mi, tides at about the same time
TidalMapMonthly tide calendar
🌊 Biggest flood tides at Unavikshak Island this month: Nov 23, Nov 24, Nov 25, Nov 26, Nov 27, Nov 28. These spring highs push water up into the grass and over the oyster rock; prime for poling into flooded marsh for tailing reds.
🔻 Negative (minus) low tides at Unavikshak Island this month: Nov 7, Nov 8, Nov 9, Nov 10, Nov 11, Nov 22, Nov 23, Nov 24, Nov 25, Nov 26, Nov 27, Nov 28 …. These drain the flats and expose the oyster rock, prime for sight-fishing and clamming.
Best fishing times (solunar)
Major and minor solunar windows for Unavikshak Island, peak feeding activity is around the moon overhead/underfoot (majors) and moonrise/moonset (minors). Score is the day's activity coefficient (0–100).
| Day | Major windows | Minor windows | Score |
|---|---|---|---|
| Today 🌗 | 8:08–10:08 AM 8:33–10:33 PM | 12:43–2:43 AM 3:08–5:08 PM | 50 |
| Wed Nov 4 🌗 | 8:55–10:55 AM 9:20–11:20 PM | 2:15–4:15 AM 3:14–5:14 PM | 63 |
| Thu Nov 5 🌘 | 9:41–11:41 AM 10:06–12:06 AM | 3:43–5:43 AM 3:19–5:19 PM | 75 |
| Fri Nov 6 🌘 | 10:26–12:26 PM 10:51–12:51 AM | 5:10–7:10 AM 3:25–5:25 PM | 85 |
| Sat Nov 7 🌘 | 11:11–1:11 PM 11:36–1:36 AM | 6:36–8:36 AM 3:32–5:32 PM | 93 |
| Sun Nov 8 🌘 | 11:57–1:57 PM 12:22–2:22 AM | 8:01–10:01 AM 3:42–5:42 PM | 97 |
| Mon Nov 9 🌑 | 12:46–2:46 PM 1:11–3:11 AM | 9:26–11:26 AM 3:57–5:57 PM | 99 |
Predictions & observations: NOAA CO-OPS station 9458762. Solunar windows computed from the moon's position for this location. Times shown in the station's local time. Not for navigation.
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