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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]

    • Tuesday

      Tuesday:WNW wind 16 to 20 kt. Patchy blowing snow before 7am. Seas 6 ft subsiding to 4 ft.

      WNW 20kt
      6ftWaves Subsiding

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday Night

      Tuesday Night:W wind 11 to 14 kt becoming S 16 to 19 kt after midnight. A slight chance of snow between 1am and 4am, then a chance of rain and snow. Seas 2 to 3 ft.

      ⇑S 19kt
      2-3ft

    • Wednesday

      Wednesday:SW wind 19 to 22 kt decreasing to 16 to 19 kt in the afternoon. Rain and snow likely, mainly before 10am. Seas 5 to 6 ft.

      SW 22kt⇓
      5-6ft

    • Wednesday Night

      Wednesday Night:SW wind 12 to 15 kt becoming W after midnight. Partly cloudy. Seas around 5 ft.

      SW 15kt
      5ft

    • Thursday

      Thursday:WNW wind 6 to 11 kt becoming variable and less than 5 kt. A slight chance of snow before 1pm, then a chance of rain and snow. Seas around 4 ft.

      WNW 11kt⇓
      4ft

    • Thursday Night

      Thursday Night:ENE wind 9 to 12 kt becoming N in the evening. Snow likely, mainly before 1am. Seas around 4 ft.

      N 12kt
      4ft

    • Friday

      Friday:N wind 7 to 12 kt becoming NW in the afternoon. Mostly sunny. Seas around 4 ft.

      N 12kt
      4ft

    • Friday Night

      Friday Night:SSW wind around 7 kt. Mostly clear. Seas 2 to 3 ft.

      SSW 7kt
      2-3ft

    • Saturday

      Saturday:SSW wind around 9 kt. Mostly sunny. Seas around 2 ft.

      SSW 9kt
      2ft


Associated Zone Forecast which includes this point

Last Update: 1:15 am EST Feb 24, 2026
Forecast Valid: 4am EST Feb 24, 2026-6pm EST Mar 2, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

Tuesday
WNW wind 16 to 20 kt. Patchy blowing snow before 7am. Seas 6 ft subsiding to 4 ft.
Tuesday Night
W wind 11 to 14 kt becoming S 16 to 19 kt after midnight. A slight chance of snow between 1am and 4am, then a chance of rain and snow. Seas 2 to 3 ft.
Wednesday
SW wind 19 to 22 kt decreasing to 16 to 19 kt in the afternoon. Rain and snow likely, mainly before 10am. Seas 5 to 6 ft.
Wednesday Night
SW wind 12 to 15 kt becoming W after midnight. Partly cloudy. Seas around 5 ft.
Thursday
WNW wind 6 to 11 kt becoming variable and less than 5 kt. A slight chance of snow before 1pm, then a chance of rain and snow. Seas around 4 ft.
Thursday Night
ENE wind 9 to 12 kt becoming N in the evening. Snow likely, mainly before 1am. Seas around 4 ft.
Friday
N wind 7 to 12 kt becoming NW in the afternoon. Mostly sunny. Seas around 4 ft.
Friday Night
SSW wind around 7 kt. Mostly clear. Seas 2 to 3 ft.
Saturday
SSW wind around 9 kt. 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: 1:15 am EST Feb 24, 2026
Forecast Valid: 4am EST Feb 24, 2026-6pm EST Mar 2, 2026
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