Stony Brook Marine Service
Green light. The water is giving you a comfortable window.
Patchy Smoke · 82° · 8 kt wind12 PM–4 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
9 NWS grid hours
Prediction unavailable
No recent report
How the day develops
Sustained wind in knots. Gusts may run higher.
Hour by hour
Daylight only. The useful part of your day.
View exact hourly readings
How this forecast is built
3 of 5 inputs reporting. Stations, locations, and roles are shown below.
NWS hourly forecast
RoleSupplies the hourly wind, sky, temperature, and precipitation forecast at this destination.
- forecast point
- Stony Brook Marine Service · stony-brook-marine-service
- Coordinates
- 40.9141° N, 73.1593° W
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
- 26.5 NM from destination
- Coordinates
- 41.1380° N, 72.6550° W
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 and waves and helps fill gaps when the marine grid has no usable wave value.
- buoy
- Central Long Island Sound · 44039
- Distance
- 26.5 NM from destination
- Coordinates
- 41.1380° N, 72.6550° W
Nearest catalog buoy, 26.5 NM from the selected location. Observed wind and wave reports when this station reports seas.
NDBC: 404 Not Found
CO-OPS 8467150
RoleSupplies predicted tide heights and high/low timing for each forecast day.
- tide station
- Bridgeport · 8467150
- Distance
- 15.7 NM from destination
- Coordinates
- 41.1750° N, 73.1810° W
Nearest catalog tide station, 15.7 NM from the selected location. Tide predictions and high/low events in feet relative to MLLW for the available forecast days.
CO-OPS today: 403 Forbidden
AviationWeather KISP
RoleAdds nearby observed and forecast gust context from METAR and TAF reports.
- aviation station
- Islip/MacArthur · KISP
- Distance
- 7.7 NM from destination
- Coordinates
- 40.7939° N, 73.1018° W
Nearest aviation candidates: KISP 7.7 NM, KBDR 14.8 NM, KFRG 15.9 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, 12:24:11 PM EDT · Planning context, not certified navigation.
Nearby harbors