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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]

    • Thursday

      Thursday:SSW wind 10 to 13 kt becoming NW 16 to 19 kt in the morning. Winds could gust as high as 27 kt. Snow, possibly mixed with rain. Patchy fog between 7am and 8am. Seas around 5 ft.

      ⇑NW 19kt
      5ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday Night

      Thursday Night:WNW wind 14 to 16 kt, with gusts as high as 23 kt. Snow, possibly mixed with rain before 8pm. Seas around 4 ft.

      WNW 16kt
      4ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday

      Friday:W wind 7 to 10 kt becoming S 16 to 21 kt. Winds could gust as high as 27 kt. Increasing clouds. Seas 3 to 4 ft.

      ⇑S 21kt
      3-4ft

    • Friday Night

      Friday Night:SSW wind 21 to 24 kt becoming WSW after midnight. Winds could gust as high as 31 kt. Partly cloudy. Seas 7 to 8 ft.

      SSW 24kt
      7-8ft

    • Saturday

      Saturday:W wind 20 to 23 kt decreasing to 16 to 19 kt in the afternoon. Winds could gust as high as 29 kt. Sunny. Seas 7 ft subsiding to 5 ft.

      W 23kt⇓
      7ftWaves Subsiding

    • Saturday Night

      Saturday Night:W wind 8 to 11 kt becoming N after midnight. Increasing clouds. Seas 2 to 3 ft.

      W 11kt
      2-3ft

    • Sunday

      Sunday:E wind 12 to 16 kt. Cloudy. Seas 2 to 3 ft.

      E 16kt
      2-3ft

    • Sunday Night

      Sunday Night:SE wind 19 to 23 kt, with gusts as high as 29 kt. Rain. Seas 4 ft building to 6 ft.

      SE 23kt
      Waves Building6ft

    • Monday

      Monday:S wind 24 to 26 kt, with gusts as high as 35 kt. Rain. Seas 8 ft building to 10 ft.

      S 26kt
      Waves Building10ft


Associated Zone Forecast which includes this point

Last Update: 2:50 am EDT Mar 12, 2026
Forecast Valid: 4am EDT Mar 12, 2026-6pm EDT Mar 18, 2026

View Nearby Observations

Detailed Forecast

...DENSE FOG ADVISORY IN EFFECT UNTIL 6 AM EDT EARLY THIS

Thursday
SSW wind 10 to 13 kt becoming NW 16 to 19 kt in the morning. Winds could gust as high as 27 kt. Snow, possibly mixed with rain. Patchy fog between 7am and 8am. Seas around 5 ft.
Thursday Night
WNW wind 14 to 16 kt, with gusts as high as 23 kt. Snow, possibly mixed with rain before 8pm. Seas around 4 ft.
Friday
W wind 7 to 10 kt becoming S 16 to 21 kt. Winds could gust as high as 27 kt. Increasing clouds. Seas 3 to 4 ft.
Friday Night
SSW wind 21 to 24 kt becoming WSW after midnight. Winds could gust as high as 31 kt. Partly cloudy. Seas 7 to 8 ft.
Saturday
W wind 20 to 23 kt decreasing to 16 to 19 kt in the afternoon. Winds could gust as high as 29 kt. Sunny. Seas 7 ft subsiding to 5 ft.
Saturday Night
W wind 8 to 11 kt becoming N after midnight. Increasing clouds. Seas 2 to 3 ft.
Sunday
E wind 12 to 16 kt. Cloudy. Seas 2 to 3 ft.
Sunday Night
SE wind 19 to 23 kt, with gusts as high as 29 kt. Rain. Seas 4 ft building to 6 ft.
Monday
S wind 24 to 26 kt, with gusts as high as 35 kt. Rain. Seas 8 ft building to 10 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: 2:50 am EDT Mar 12, 2026
Forecast Valid: 4am EDT Mar 12, 2026-6pm EDT Mar 18, 2026
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