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Hazardous Weather Conditions

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New York, NY Local Forecast Office

15NM SW Islip NY

Marine Point Forecast

[NOTICE]

    • Friday

      Friday:W wind 8 to 11 kt becoming SSW in the afternoon. A chance of showers and thunderstorms after 5pm. Seas 2 to 3 ft.

      SW 11kt
      2-3ft

    • Friday Night

      Friday Night:WSW wind around 11 kt becoming NW after midnight. A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas around 2 ft.

      WSW 11kt
      2ft

    • Saturday

      Saturday:NW wind 8 to 11 kt becoming WSW in the afternoon. Sunny. Seas around 2 ft.

      WSW 11kt
      2ft

    • Saturday Night

      Saturday Night:SW wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 2 ft.

      SW 10kt⇓
      2ft

    • Sunday

      Sunday:SW wind 5 to 8 kt becoming S 14 to 19 kt. A slight chance of showers after 2pm. Seas 2 to 3 ft.

      ⇑S 19kt
      2-3ft

    • Sunday Night

      Sunday Night:S wind 18 to 21 kt becoming WSW 13 to 16 kt after midnight. Showers, mainly between 8pm and 2am. Seas 3 to 4 ft.

      S 21kt⇓
      3-4ft

    • Monday

      Monday:NW wind 8 to 11 kt becoming WSW in the afternoon. A chance of showers before 8am. Seas around 2 ft.

      WSW 11kt
      2ft

    • Monday Night

      Monday Night:WSW wind 5 to 10 kt becoming NNW after midnight. Partly cloudy. Seas around 2 ft.

      WSW 10kt
      2ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming S 6 to 11 kt in the afternoon. Mostly sunny. Seas around 2 ft.

      ⇑S 11kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 8:50 pm EDT Jun 11, 2026
Forecast Valid: 2am EDT Jun 12, 2026-6pm EDT Jun 18, 2026

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Detailed Forecast

...SEVERE THUNDERSTORM WATCH 317 IN EFFECT UNTIL MIDNIGHT EDT

Friday
W wind 8 to 11 kt becoming SSW in the afternoon. A chance of showers and thunderstorms after 5pm. Seas 2 to 3 ft.
Friday Night
WSW wind around 11 kt becoming NW after midnight. A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Seas around 2 ft.
Saturday
NW wind 8 to 11 kt becoming WSW in the afternoon. Sunny. Seas around 2 ft.
Saturday Night
SW wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 2 ft.
Sunday
SW wind 5 to 8 kt becoming S 14 to 19 kt. A slight chance of showers after 2pm. Seas 2 to 3 ft.
Sunday Night
S wind 18 to 21 kt becoming WSW 13 to 16 kt after midnight. Showers, mainly between 8pm and 2am. Seas 3 to 4 ft.
Monday
NW wind 8 to 11 kt becoming WSW in the afternoon. A chance of showers before 8am. Seas around 2 ft.
Monday Night
WSW wind 5 to 10 kt becoming NNW after midnight. Partly cloudy. Seas around 2 ft.
Tuesday
Variable winds less than 5 kt becoming S 6 to 11 kt in the afternoon. Mostly sunny. Seas around 2 ft.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 40.53°N 73.44°W
Last Update: 8:50 pm EDT Jun 11, 2026
Forecast Valid: 2am EDT Jun 12, 2026-6pm EDT Jun 18, 2026
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