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Duck Island Harbor
Green light. The water is giving you a comfortable window.
Sunny · 82° · 3 kt wind1 PM–5 PM is the best 4-hour window inside your selected limits.
For Pursuit 235 · 4 hours · limits 15 kt / 2.5 ftMake it yours, skipper
The flag re-reads the water for your boat and your day.
Your boat
Time on the water
Your comfort line: 15 kt wind · 2.5 ft seas
Pick your day
Seven days, one honest flag each.
Showing hourly detail for today. Each flag uses that day's own forecast.
Daylight forecast
Buoy-based estimate
4 turns today
NDBC 44065
NDBC 44065 · observed 7/17/2026, 1:30:00 PM EDT
How the day develops
Wind, waves, and tide stay aligned to the same daylight hours.
Sustained wind in knots. The dashed line is your selected boat limit.
Wave height from the NWS marine grid, with clearly identified buoy-based estimates for gaps.
Predicted water level in feet relative to MLLW from NOAA CO-OPS.
Hour by hour
Daylight only. The useful part of your day.
5 kt
4 kt
3 ktView exact hourly readings
How this forecast is built
5 of 5 inputs reporting. Stations, locations, and roles are shown below.
Resolved directly from the destination coordinates.
The buoy fills wave gaps and supplies observations.
Predicted heights and high/low timing.
Latest available buoy observation.
Source geography
Where these readings come from
Dashed lines connect this destination to the stations contributing marine, tide, and aviation context.
- Forecast pointDuck Island HarborNWS forecast point
- BuoyNew York Harbor Entrance · 4406536.9 NM away
- Marine gridCentral Long Island Sound · 4403935 NM away
- Tide gaugeKings Point · 851694519 NM away
- AviationFarmingdale/Republic · KFRG12 NM away
NWS hourly forecast
RoleSupplies the hourly wind, sky, temperature, and precipitation forecast at this destination.
- forecast point
- Duck Island Harbor · duck-island-harbor
- Coordinates
- 40.9320° N, 73.3785° W
Why this sourceUses the catalog's pre-resolved NWS grid cell for these destination coordinates.
Data timingForecast grid updated · 4 hr ago
ConfidenceThe forecast is resolved directly at this location.
Hourly wind, weather, temperature, and precipitation forecast resolved from the selected latitude/longitude.
NWS coastal marine grid
RoleSupplies forecast wave heights, which Boat or Nope uses before buoy-based estimates when available.
- marine grid point
- Central Long Island Sound · 44039
- Distance
- 35 NM from destination
- Coordinates
- 41.1380° N, 72.6550° W
Why this sourceResolved on the coastal marine grid at 44039, the selected marine reference point for this destination.
Data timingMarine grid updated · 4 hr ago
ConfidenceThe source is 35 NM away, so local conditions may differ.
Wave-height forecast resolved at marine reference 44039. Used before Boat or Nope's observed-buoy fallback when the grid reports usable wave heights.
NDBC 44065
RoleChecks recent observed wind, waves, and water temperature and helps fill gaps when the marine grid has no usable wave value.
- buoy
- New York Harbor Entrance · 44065
- Distance
- 36.9 NM from destination
- Coordinates
- 40.3680° N, 73.7010° W
Why this sourceThe configured buoy 44039 did not report usable observations, so 44065 was selected from nearby candidates.
Data timingLatest buoy observation · 30 min ago
ConfidenceThe source is 36.9 NM away, so local conditions may differ.
Automatic fallbackConfigured 44039; selected 44065 after checking 44039, 44065.
Selected catalog buoy, 36.9 NM from the selected location. Reports observed wind, waves, and water temperature when those sensors are available.
CO-OPS 8516945
RoleSupplies predicted tide heights and high/low timing for each forecast day.
- tide station
- Kings Point · 8516945
- Distance
- 19 NM from destination
- Coordinates
- 40.8103° N, 73.7649° W
Why this sourceThe configured tide gauge 8467150 did not return complete predictions, so 8516945 was selected from nearby candidates.
Data timingPredictions generated for each selected day
ConfidenceThe selected source is within 25 NM of the destination.
Automatic fallbackConfigured 8467150; selected 8516945 after checking 8467150, 8516945.
Selected catalog tide station, 19 NM from the selected location. Tide predictions and high/low events in feet relative to MLLW for the available forecast days.
AviationWeather KFRG
RoleAdds nearby observed and forecast gust context from METAR and TAF reports.
- aviation station
- Farmingdale/Republic · KFRG
- Distance
- 12 NM from destination
- Coordinates
- 40.7344° N, 73.4164° W
Why this sourceChosen from the nearest aviation candidates that returned a current METAR or TAF report.
Data timingLatest METAR observation · 3 hr ago
ConfidenceThe selected source is within 25 NM of the destination.
Nearest aviation candidates: KFRG 12 NM, KISP 15.1 NM, KBDR 17.7 NM.
Hourly seas: NWS coastal marine-grid wave height is preferred when available. Gaps fall back to the latest NDBC wave observation projected with forecast wind; fallback values are planning estimates, not NOAA wave forecasts.
Verdict: Go, Caution, No-Go, or Incomplete is derived from the boat limits you select for wind and seas.
Source retrieval19 reused · 4 refreshed
Updated 7/17/2026, 1:59:42 PM EDT · Planning context, not certified navigation.
Local source coverage
Planning a boating day at Duck Island Harbor
Duck Island Harbor is a Northeast boating destination in New York, with local wind, wave, tide, and aviation weather conditions from nearby reporting stations.
This named water in New York uses Central Long Island Sound (44039, 35.0 NM away) for marine observations, Bridgeport (8467150, 17.1 NM away) for tide predictions, and Farmingdale/Republic (KFRG, 12.0 NM away) for nearby aviation weather context.
This location is part of Boat or Nope's reviewed launch catalog and remains subject to automated source-health checks.Nearby harbors