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15NM SW Islip NY

[NOTICE]

Last Update: 6:03 pm EDT Mar 12, 2026
Forecast Valid: 8pm EDT Mar 12, 2026-6pm EDT Mar 19, 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

Tonight

WNW wind 16 to 19 kt. Mostly cloudy, then gradually becoming mostly clear. Seas around 4 ft.

Friday

W wind 9 to 12 kt becoming S 19 to 24 kt. Increasing clouds. Seas 3 to 4 ft.

Friday Night

S wind 25 to 30 kt becoming WSW after midnight. Mostly cloudy, then gradually becoming mostly clear. Seas around 8 ft.

Saturday

W wind 24 to 27 kt decreasing to 20 to 23 kt in the afternoon. Sunny. Seas 7 ft subsiding to 5 ft.

Saturday Night

WNW wind 12 to 15 kt becoming NNW 7 to 10 kt after midnight. Increasing clouds. Seas 4 ft subsiding to 2 ft.

Sunday

ENE wind 11 to 14 kt becoming ESE 14 to 17 kt in the afternoon. Mostly cloudy. Seas 2 to 3 ft.

Sunday Night

ESE wind 21 to 24 kt increasing to 24 to 27 kt after midnight. Winds could gust as high as 33 kt. Rain, mainly after 2am. Seas 4 ft building to 7 ft.

Monday

S wind 30 to 33 kt, with gusts as high as 43 kt. Rain and possibly a thunderstorm. Seas 9 ft building to 13 ft.

Monday Night

S wind 33 to 36 kt becoming WSW 27 to 30 kt after midnight. Winds could gust as high as 43 kt. Rain. Seas 15 ft subsiding to 11 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.