Boca de Quadra Tides Today
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Boca de Quadra runs a mean tidal range of about 12.3 ft. This month the highest water, 18.6 ft, comes on the afternoon of Nov 25, and the lowest, a -3.5 ft minus tide, on the evening of Nov 25.
| Low tide | 1:25 AM | 1.6 ft |
| High tide | 8:05 AM | 13.4 ft |
| Low tide | 2:14 PM | 4.3 ft |
| High tide | 8:12 PM | 12.9 ft |
Today on the water at Boca de Quadra
Today at Boca de Quadra: high tide at 8:05 AM (13.4 ft) and 8:12 PM (12.9 ft), low tide at 1:25 AM (1.6 ft) and 2:14 PM (4.3 ft). The National Weather Service forecast for Tuesday is partly sunny then chance light rain with E winds 5 to 10 mph, 45°F. Sunrise is at 6:49 AM and sunset at 4:04 PM.
| Period | Forecast | Wind | Temp |
|---|---|---|---|
| Overnight | Slight Chance Light Rain | E 5 mph | 41°F |
| Tuesday | Partly Sunny then Chance Light Rain | E 5 to 10 mph | 45°F |
Forecast: National Weather Service point forecast for this location.
Where Boca de Quadra is
Boca de Quadra sits at 55.1167° N, 130.7980° W on Southeast Alaska's Inside Passage, about 29 mi east of Metlakatla, AK, in Ketchikan Gateway. 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 Ketchikan (NOAA 9450460), 35.9 mi away, and the tide here runs on nearly the same clock. The nearest weather station is Mary Island, AK, a shore station reporting wind and, at most sites, water temperature, 15.2 mi away.
The tide at Boca de Quadra
Boca de Quadra has a semidiurnal tide: two highs and two lows a day of about the same size, roughly 12 hours 25 minutes apart. This month's predictions average 1.9 high tides a day here. The mean range from lower low to higher high is 15.1 ft, and 12.7 ft between the average high and the average low, a very large tide, among the biggest in the United States. On an average day the higher high tops the lower high by 0.9 ft and the lower low sits 1.5 ft below the other low. For the water around it: Inside Passage tides are large and mixed semidiurnal, two highs and two lows a day with ranges of 12 to 20 ft that drive fast currents in the narrows.
About this station
- High tide reaches Boca de Quadra about 9.4 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 Ketchikan, station 9450460. High tide comes at the same time and low tide about 2 min later than there.
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 Boca de Quadra from the 1983-2001 National Tidal Datum Epoch; mean higher high water is 15.1 ft above it and mean sea level 7.9 ft. These datums are controlled from NOAA's Ketchikan, AK gauge. Source: NOAA CO-OPS station 9450305, established 1933, gauge removed 1982. 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 Boca de Quadra
- Custom House Cove, Mary Island: 16.6 mi, tides about 4 min earlier
- Nakat Harbor, Alaska: 20.9 mi, tides about 4 min later
- Hidden Inter Entrance, Pearse Inlet: 21.9 mi, tides about 4 min earlier
- Ketchikan: 35.9 mi, tides at about the same time
- Hut Point, Behm Canal: 41.4 mi, tides at about the same time
TidalMapMonthly tide calendar
🌊 Biggest flood tides at Boca de Quadra this month: Nov 7, Nov 8, 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 Boca de Quadra this month: Nov 6, Nov 7, Nov 8, Nov 9, Nov 10, Nov 11, Nov 22, Nov 23, Nov 24, Nov 25, Nov 26, Nov 27 …. 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 Boca de Quadra, 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 🌗 | 6:16–8:16 AM 6:41–8:41 PM | — 1:17–3:17 PM | 50 |
| Wed Nov 4 🌗 | 7:04–9:04 AM 7:29–9:29 PM | 12:22–2:22 AM 1:25–3:25 PM | 63 |
| Thu Nov 5 🌘 | 7:50–9:50 AM 8:15–10:15 PM | 1:48–3:48 AM 1:33–3:33 PM | 75 |
| Fri Nov 6 🌘 | 8:35–10:35 AM 9:00–11:00 PM | 3:13–5:13 AM 1:40–3:40 PM | 85 |
| Sat Nov 7 🌘 | 9:20–11:20 AM 9:45–11:45 PM | 4:36–6:36 AM 1:50–3:50 PM | 93 |
| Sun Nov 8 🌘 | 10:06–12:06 PM 10:31–12:31 AM | 6:00–8:00 AM 2:01–4:01 PM | 97 |
| Mon Nov 9 🌑 | 10:54–12:54 PM 11:19–1:19 AM | 7:22–9:22 AM 2:19–4:19 PM | 99 |
Predictions & observations: NOAA CO-OPS station 9450305. 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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