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15NM SW Islip NY

[NOTICE]

Last Update: 6:12 am EDT Apr 21, 2026
Forecast Valid: 11am EDT Apr 21, 2026-6pm EDT Apr 27, 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH

Today

ENE wind 5 to 7 kt becoming S in the afternoon. Sunny. Seas around 1 ft.

Tonight

S wind 12 to 16 kt, with gusts as high as 22 kt. Showers likely, mainly after 2am. Seas 2 to 3 ft.

Wednesday

SSE wind 12 to 17 kt, with gusts as high as 25 kt. Showers likely, mainly before 2pm. Seas 3 to 4 ft.

Wednesday Night

NE wind 5 to 8 kt. A slight chance of showers before 8pm. Seas around 3 ft.

Thursday

NNW wind 5 to 9 kt becoming WSW in the afternoon. Mostly sunny. Seas around 2 ft.

Thursday Night

WNW wind 7 to 10 kt becoming N after midnight. Partly cloudy. Seas 2 to 3 ft.

Friday

NNE wind 6 to 9 kt becoming S in the afternoon. Mostly sunny. Seas around 2 ft.

Friday Night

SSE wind around 10 kt becoming ESE after midnight. A chance of showers. Seas around 2 ft.

Saturday

E wind 13 to 15 kt. Showers likely. Seas around 2 ft.

*Notices:

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.
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.