Duck Island Yacht Club
Green light. The water is giving you a comfortable window.
Areas Of Smoke · 76° · 10 kt wind3 PM–7 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
6 NWS grid hours
4 turns today
No recent report
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.
View exact hourly readings
How this forecast is built
4 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.
Shown when the selected buoy reports it.
Source geography
Where these readings come from
Dashed lines connect this destination to the stations contributing marine, tide, and aviation context.
- Forecast pointDuck Island Yacht ClubNWS forecast point
- BuoyCentral Long Island Sound · 4403910.9 NM away
- Tide gaugeNew London · 846149018.7 NM away
- AviationGroton-New London · KGON19.9 NM away
NWS hourly forecast
RoleSupplies the hourly wind, sky, temperature, and precipitation forecast at this destination.
- forecast point
- Duck Island Yacht Club · duck-island-yacht-club
- Coordinates
- 41.2647° N, 72.4833° W
Why this sourceResolved from the destination coordinates, so it represents the selected harbor rather than a nearby city.
Data timingForecast grid updated · 1 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
- 10.9 NM from destination
- Coordinates
- 41.1380° N, 72.6550° W
Why this sourceResolved on the coastal marine grid at NDBC 44039, the selected marine reference point for this destination.
Data timingMarine grid updated · 1 hr ago
ConfidenceThe selected source is within 25 NM of the destination.
Wave-height forecast resolved at NDBC 44039. Used before Boat or Nope's observed-buoy fallback when the grid reports usable wave heights.
NDBC 44039
RoleChecks recent observed wind, waves, and water temperature and helps fill gaps when the marine grid has no usable wave value.
- buoy
- Central Long Island Sound · 44039
- Distance
- 10.9 NM from destination
- Coordinates
- 41.1380° N, 72.6550° W
Why this sourceSelected from the catalog as the nearest trusted NDBC marine observation station for Duck Island Yacht Club.
Data timingNo recent observation
ConfidenceThis source did not return usable data during the latest refresh.
Nearest catalog buoy, 10.9 NM from the selected location. Reports observed wind, waves, and water temperature when those sensors are available.
NDBC: 404 Not Found
CO-OPS 8461490
RoleSupplies predicted tide heights and high/low timing for each forecast day.
- tide station
- New London · 8461490
- Distance
- 18.7 NM from destination
- Coordinates
- 41.3550° N, 72.0870° W
Why this sourceSelected as the nearest trusted CO-OPS prediction station for Duck Island Yacht Club.
Data timingPredictions generated for each selected day
ConfidenceThe selected source is within 25 NM of the destination.
Nearest catalog tide station, 18.7 NM from the selected location. Tide predictions and high/low events in feet relative to MLLW for the available forecast days.
AviationWeather KGON
RoleAdds nearby observed and forecast gust context from METAR and TAF reports.
- aviation station
- Groton-New London · KGON
- Distance
- 19.9 NM from destination
- Coordinates
- 41.3300° N, 72.0500° W
Why this sourceChosen from the nearest aviation candidates that returned a current METAR or TAF report.
Data timingLatest METAR observation · 40 min ago
ConfidenceThe selected source is within 25 NM of the destination.
Nearest aviation candidates: KGON 19.9 NM, KHTO 21.1 NM, KMTP 27.8 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.
Updated 7/16/2026, 3:36:06 PM EDT · Planning context, not certified navigation.
Nearby harbors