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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]

    • This Afternoon

      This Afternoon:E wind 21 to 26 kt. Rain and snow likely before 4pm, then snow. Seas 4 to 5 ft.

      E 26kt
      4-5ft

    • Tonight

      Tonight:ENE wind 30 to 35 kt becoming NNE 36 to 41 kt after midnight. Winds could gust as high as 49 kt. Snow. The snow could be heavy at times. Seas 6 ft building to 9 ft.

      ⇑NNE 41kt
      Waves Building9ft

      Storm Warning
      Storm Warning

    • Monday

      Monday:N wind 34 to 39 kt becoming NNW 27 to 32 kt in the afternoon. Winds could gust as high as 48 kt. Snow, mainly before 4pm. The snow could be heavy at times. Seas around 10 ft.

      N 39kt⇓
      10ft

      Storm Warning
      Storm Warning

    • Monday Night

      Monday Night:NW wind 21 to 24 kt. A chance of snow, mainly before 7pm. Seas 8 ft subsiding to 6 ft.

      NW 24kt
      8ftWaves Subsiding

    • Tuesday

      Tuesday:WNW wind 20 to 23 kt decreasing to 17 to 20 kt in the afternoon. Mostly sunny. Seas 4 to 5 ft.

      WNW 23kt⇓
      4-5ft

    • Tuesday Night

      Tuesday Night:WNW wind 12 to 15 kt becoming WSW 9 to 12 kt after midnight. A chance of snow after 1am. Seas 2 to 3 ft.

      WNW 15kt⇓
      2-3ft

    • Wednesday

      Wednesday:S wind 15 to 17 kt becoming SW in the afternoon. A chance of rain and snow before 8am, then a chance of snow between 8am and 1pm. Seas 2 ft building to 6 ft.

      S 17kt
      Waves Building6ft

    • Wednesday Night

      Wednesday Night:SW wind around 14 kt becoming W after midnight. A chance of rain. Seas 5 to 6 ft.

      SW 14kt
      5-6ft

    • Thursday

      Thursday:W wind around 12 kt becoming S in the afternoon. A chance of rain. Seas around 5 ft.

      W 12kt
      5ft


Associated Zone Forecast which includes this point

Last Update: 5:57 am EST Feb 22, 2026
Forecast Valid: 12pm EST Feb 22, 2026-6pm EST Feb 28, 2026

View Nearby Observations

Detailed Forecast

...STORM WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY

This Afternoon
E wind 21 to 26 kt. Rain and snow likely before 4pm, then snow. Seas 4 to 5 ft.
Tonight
ENE wind 30 to 35 kt becoming NNE 36 to 41 kt after midnight. Winds could gust as high as 49 kt. Snow. The snow could be heavy at times. Seas 6 ft building to 9 ft.
Monday
N wind 34 to 39 kt becoming NNW 27 to 32 kt in the afternoon. Winds could gust as high as 48 kt. Snow, mainly before 4pm. The snow could be heavy at times. Seas around 10 ft.
Monday Night
NW wind 21 to 24 kt. A chance of snow, mainly before 7pm. Seas 8 ft subsiding to 6 ft.
Tuesday
WNW wind 20 to 23 kt decreasing to 17 to 20 kt in the afternoon. Mostly sunny. Seas 4 to 5 ft.
Tuesday Night
WNW wind 12 to 15 kt becoming WSW 9 to 12 kt after midnight. A chance of snow after 1am. Seas 2 to 3 ft.
Wednesday
S wind 15 to 17 kt becoming SW in the afternoon. A chance of rain and snow before 8am, then a chance of snow between 8am and 1pm. Seas 2 ft building to 6 ft.
Wednesday Night
SW wind around 14 kt becoming W after midnight. A chance of rain. Seas 5 to 6 ft.
Thursday
W wind around 12 kt becoming S in the afternoon. A chance of rain. Seas around 5 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: 5:57 am EST Feb 22, 2026
Forecast Valid: 12pm EST Feb 22, 2026-6pm EST Feb 28, 2026
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