Ship John Shoal Tides Today
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Ship John Shoal runs a mean tidal range of about 5.4 ft. This month the highest water, 6.9 ft, comes on the morning of Nov 25, and the lowest, a -0.3 ft minus tide, on the afternoon of Nov 25.
| High tide | 4:42 AM | 5.4 ft |
| Low tide | 10:58 AM | 0.6 ft |
| High tide | 5:05 PM | 6.0 ft |
| Low tide | 11:43 PM | 0.4 ft |
Today on the water at Ship John Shoal
Today at Ship John Shoal: high tide at 4:42 AM (5.4 ft) and 5:05 PM (6.0 ft), low tide at 10:58 AM (0.6 ft) and 11:43 PM (0.4 ft). The water at the gauge reads 60°F. Sunrise is at 6:30 AM and sunset at 4:59 PM.
Forecast: National Weather Service point forecast for this location.
Where Ship John Shoal is
Ship John Shoal sits at 39.3054° N, 75.3767° W on the Delaware Bay and River, about 6 mi south of Greenwich, NJ. The station here is a live gauge in a NOAA PORTS harbor system, reporting water level in near real time for commercial traffic. It has been in NOAA's records since 1997. The nearest weather station is Ship John Shoal, NJ, a shore station reporting wind and, at most sites, water temperature, right at this station.
The tide at Ship John Shoal
Ship John Shoal 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 6.2 ft, and 5.6 ft between the average high and the average low, a large tide. On an average day the higher high tops the lower high by 0.4 ft and the lower low sits 0.2 ft below the other low. For the water around it: Delaware Bay tides are semidiurnal, two highs a day of 4 to 6 ft, and the tide keeps growing as it funnels upriver toward Philadelphia and Trenton.
About this station
- High tide reaches Ship John Shoal about 2.4 hours after the moon passes overhead. That lag is local, which is why high water does not line up with the moon.
- Highest water on record: 9.6 ft on Dec 21, 2012.
- Lowest on record: -2.9 ft on Jan 4, 2010.
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 Ship John Shoal from the 1983-2001 National Tidal Datum Epoch; mean higher high water is 6.2 ft above it and mean sea level 3.0 ft. These datums are controlled from NOAA's Delaware City, DE gauge. Source: NOAA CO-OPS station 8537121, established 1997. The tide times and heights are NOAA's official harmonic predictions for this station; TidalMap republishes them daily and does not alter them. The observed line is the gauge's own six-minute water level feed.
Tide stations near Ship John Shoal
- Greenwich Pier, Cohansey River: 5.6 mi, tides about 33 min later
- Cedar Creek entrance, Nantuxent Cove: 7.0 mi, tides about 23 min earlier
- Money Island, Nantuxent Creek entrance: 7.5 mi, tides about 30 min earlier
- Raccoon Ditch, Newport Meadows, Stow Creek, N.J.: 8.0 mi, tides about 131 min later
- Tindalls Wharf, Cohansey River: 9.1 mi, tides about 110 min later
TidalMapMonthly tide calendar
🌊 Biggest flood tides at Ship John Shoal this month: Nov 7, Nov 8, Nov 9, Nov 10, Nov 23, Nov 24, Nov 25, Nov 26, Nov 27. 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 Ship John Shoal this month: 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 Ship John Shoal, 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 🌗 | 6:27–8:27 AM 6:52–8:52 PM | 11:31–1:31 AM 1:11–3:11 PM | 47 |
| Wed Nov 4 🌗 | 7:15–9:15 AM 7:40–9:40 PM | 12:43–2:43 AM 1:36–3:36 PM | 61 |
| Thu Nov 5 🌘 | 8:01–10:01 AM 8:26–10:26 PM | 1:52–3:52 AM 1:59–3:59 PM | 73 |
| Fri Nov 6 🌘 | 8:46–10:46 AM 9:11–11:11 PM | 2:59–4:59 AM 2:23–4:23 PM | 83 |
| Sat Nov 7 🌘 | 9:31–11:31 AM 9:56–11:56 PM | 4:05–6:05 AM 2:48–4:48 PM | 91 |
| Sun Nov 8 🌘 | 10:17–12:17 PM 10:42–12:42 AM | 5:11–7:11 AM 3:16–5:16 PM | 97 |
| Mon Nov 9 🌑 | 11:05–1:05 PM 11:30–1:30 AM | 6:16–8:16 AM 3:49–5:49 PM | 99 |
Predictions & observations: NOAA CO-OPS station 8537121. 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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