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Hazardous Weather Conditions

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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:NW wind 5 to 7 kt becoming N after midnight. Showers and possibly a thunderstorm before 5am, then a chance of showers. Some of the storms could be severe. Seas 1 ft or less.

      NW 7kt
      < 1ft

    • Thursday

      Thursday:NNE wind 5 to 10 kt. Showers likely, mainly before 11am. Seas 1 ft or less.

      NNE 10kt
      < 1ft

    • Thursday Night

      Thursday Night:Variable winds 5 kt or less. Mostly cloudy during the early evening, then gradual clearing. Seas 1 ft or less.

      Light Wind
      < 1ft

    • Friday

      Friday:NE wind 9 to 12 kt becoming E in the afternoon. Increasing clouds. Seas 1 ft or less.

      NE 12kt
      < 1ft

    • Friday Night

      Friday Night:SE wind around 6 kt becoming E after midnight. A chance of showers after 2am. Seas 1 ft or less.

      SE 6kt
      < 1ft

    • Saturday

      Saturday:E wind 11 to 15 kt. Showers, mainly after 8am. Seas 1 ft or less.

      E 15kt
      < 1ft

    • Saturday Night

      Saturday Night:E wind 15 to 17 kt, with gusts as high as 23 kt. Showers. Seas around 1 ft.

      E 17kt
      1ft

    • Sunday

      Sunday:E wind 10 to 15 kt, with gusts as high as 21 kt. Showers likely. Seas around 1 ft.

      E 15kt
      1ft

    • Sunday Night

      Sunday Night:ENE wind around 6 kt becoming variable and less than 5 kt after midnight. A chance of showers. Seas 1 ft or less.

      ENE 6kt⇓
      < 1ft


Associated Zone Forecast which includes this point

Last Update: 2:26 pm EDT May 20, 2026
Forecast Valid: 7pm EDT May 20, 2026-6pm EDT May 27, 2026

View Nearby Observations

Detailed Forecast

...SEVERE THUNDERSTORM WATCH 235 IN EFFECT UNTIL 9 PM EDT THIS

Tonight
NW wind 5 to 7 kt becoming N after midnight. Showers and possibly a thunderstorm before 5am, then a chance of showers. Some of the storms could be severe. Seas 1 ft or less.
Thursday
NNE wind 5 to 10 kt. Showers likely, mainly before 11am. Seas 1 ft or less.
Thursday Night
Variable winds 5 kt or less. Mostly cloudy during the early evening, then gradual clearing. Seas 1 ft or less.
Friday
NE wind 9 to 12 kt becoming E in the afternoon. Increasing clouds. Seas 1 ft or less.
Friday Night
SE wind around 6 kt becoming E after midnight. A chance of showers after 2am. Seas 1 ft or less.
Saturday
E wind 11 to 15 kt. Showers, mainly after 8am. Seas 1 ft or less.
Saturday Night
E wind 15 to 17 kt, with gusts as high as 23 kt. Showers. Seas around 1 ft.
Sunday
E wind 10 to 15 kt, with gusts as high as 21 kt. Showers likely. Seas around 1 ft.
Sunday Night
ENE wind around 6 kt becoming variable and less than 5 kt after midnight. A chance of showers. Seas 1 ft or less.

*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: 40.91°N 73.39°W
Last Update: 2:26 pm EDT May 20, 2026
Forecast Valid: 7pm EDT May 20, 2026-6pm EDT May 27, 2026
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