Castle Bay, Northwest Arm Tides Today
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Castle Bay, Northwest Arm runs a mean tidal range of about 6.4 ft. This month the highest water, 11.3 ft, comes on the afternoon of Nov 25, and the lowest, a -2.4 ft minus tide, on the evening of Nov 25.
| Low tide | 3:20 AM | 1.0 ft |
| High tide | 10:04 AM | 7.7 ft |
| Low tide | 4:11 PM | 3.4 ft |
| High tide | 9:47 PM | 7.3 ft |
Today on the water at Castle Bay, Northwest Arm
Today at Castle Bay, Northwest Arm: high tide at 10:04 AM (7.7 ft) and 9:47 PM (7.3 ft), low tide at 3:20 AM (1.0 ft) and 4:11 PM (3.4 ft). The National Weather Service forecast for Tuesday is light snow likely then chance rain and snow showers with SE winds 5 to 10 mph, 34°F. In effect now: Small Craft Advisory. Sunrise is at 8:43 AM and sunset at 5:50 PM.
| Period | Forecast | Wind | Temp |
|---|---|---|---|
| Overnight | Snow Showers Likely | S 15 mph | 33°F |
| Tuesday | Light Snow Likely then Chance Rain And Snow Showers | SE 5 to 10 mph | 34°F |
Forecast: National Weather Service point forecast for this location.
Where Castle Bay, Northwest Arm is
Castle Bay, Northwest Arm sits at 56.2317° N, 158.3470° W on the Alaska Peninsula and Shumagin Islands, about 3 mi southeast of Chignik, AK. The station here is a historical NOAA reference station: a gauge measured the tide at this spot from 2001 until 2003, and NOAA still publishes harmonic predictions from that record. There is no live reading here today. The closest gauge measuring live water level is Port Moller (NOAA 9463502), 87.4 mi away, and high and low water here run on average about 236 min later than there. The nearest weather station is Chignik, Chignik Airport, an airport reporting wind, visibility and sky cover, but no water temperature, 5.6 mi away.
The tide at Castle Bay, Northwest Arm
Castle Bay, Northwest Arm 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 8.8 ft, and 6.6 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 Castle Bay, Northwest Arm 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.
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 Castle Bay, Northwest Arm from the 1983-2001 National Tidal Datum Epoch; mean higher high water is 8.8 ft above it and mean sea level 4.6 ft. These datums are controlled from NOAA's Sand Point, AK gauge. Source: NOAA CO-OPS station 9458907, established 2001, gauge removed 2003. The tide times and heights are NOAA's official harmonic predictions for this station; TidalMap republishes them daily and does not alter them.
Tide stations near Castle Bay, Northwest Arm
- Aniakchak Bay: 48.7 mi, tides at about the same time
- Kupreanof Harbor, Paul Island: 49.3 mi, tides about 10 min earlier
- Ivanof Bay: 49.7 mi, tides at about the same time
- Port Moller: 87.4 mi, tides about 236 min earlier
- Zachary Bay, Unga Island: 107.8 mi, tides at about the same time
TidalMapMonthly tide calendar
🌊 Biggest flood tides at Castle Bay, Northwest Arm this month: Nov 9, Nov 22, 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 Castle Bay, Northwest Arm this month: Nov 1, Nov 7, Nov 8, Nov 9, Nov 10, Nov 11, Nov 12, Nov 22, Nov 23, Nov 24, Nov 25, Nov 26 …. 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 Castle Bay, Northwest Arm, 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 🌗 | 8:10–10:10 AM 8:35–10:35 PM | 12:47–2:47 AM 3:10–5:10 PM | 50 |
| Wed Nov 4 🌗 | 8:58–10:58 AM 9:23–11:23 PM | 2:18–4:18 AM 3:16–5:16 PM | 63 |
| Thu Nov 5 🌘 | 9:43–11:43 AM 10:08–12:08 AM | 3:46–5:46 AM 3:22–5:22 PM | 75 |
| Fri Nov 6 🌘 | 10:28–12:28 PM 10:53–12:53 AM | 5:12–7:12 AM 3:28–5:28 PM | 85 |
| Sat Nov 7 🌘 | 11:13–1:13 PM 11:38–1:38 AM | 6:37–8:37 AM 3:36–5:36 PM | 93 |
| Sun Nov 8 🌘 | 12:00–2:00 PM 12:25–2:25 AM | 8:02–10:02 AM 3:46–5:46 PM | 97 |
| Mon Nov 9 🌑 | 12:48–2:48 PM 1:13–3:13 AM | 9:26–11:26 AM 4:02–6:02 PM | 99 |
Predictions & observations: NOAA CO-OPS station 9458907. 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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