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15NM SW Islip NY

[NOTICE]

Last Update: 2:20 am EDT May 20, 2026
Forecast Valid: 4am EDT May 20, 2026-6pm EDT May 26, 2026

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

Wednesday

SSW wind 11 to 15 kt, with gusts as high as 22 kt. A chance of showers and thunderstorms after 4pm. Seas around 4 ft.

Wednesday Night

WSW wind 6 to 9 kt becoming N after midnight. Showers and possibly a thunderstorm before 5am, then a chance of showers. Seas 3 to 4 ft.

Thursday

NNE wind 8 to 11 kt becoming ENE in the afternoon. Showers likely, mainly between 8am and 2pm. Seas 2 to 3 ft.

Thursday Night

Variable winds 5 kt or less. A slight chance of showers before 8pm. Seas around 2 ft.

Friday

ENE wind around 14 kt becoming E in the afternoon. Partly sunny. Seas 2 to 3 ft.

Friday Night

ESE wind around 11 kt. Showers likely, mainly after 2am. Seas 2 to 3 ft.

Saturday

E wind 19 to 22 kt. Showers. Seas 3 ft building to 5 ft.

Saturday Night

E wind 22 to 24 kt. Showers. Seas around 6 ft.

Sunday

ENE wind 18 to 22 kt. Showers likely. Seas around 6 ft.

Winds and seas may be higher in and near tstms.

*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.