Winter Storm in the Central Appalachians through the Northeast; Heavy Snow in the Great Basin and Rockies

A winter storm will impact the central Appalachians to the Northeast through the night. Accumulating snow is expected for interior New England and the northern Mid-Atlantic. Scattered showers and occasional thunderstorms will persist across Florida and the Southeast coast. Locally heavy mountain snow is expected in the Great Basin and Rockies over the next couple of days. Read More >

Hazardous Weather Conditions

Small Craft Advisory until December 3, 06:00 AM EST

For More Weather Information:

New York, NY Local Forecast Office

15NM WSW Islip NY

Marine Point Forecast

[NOTICE]

Wednesday
NNW 13kt⇓
1ft
Wednesday Night
⇑W 12kt
1ft
Thursday
⇑W 20kt
1-2ft
Thursday Night
NW 21kt⇓
1-2ft
Friday
S 9kt
1ft
Friday Night
WSW 8kt
1ft
Saturday
WNW 9kt
1ft
Saturday Night
W 9kt
1ft
Sunday
NNW 10kt
1ft

Associated Zone Forecast which includes this point

Last Update: 3:11 am EST Dec 3, 2025
Forecast Valid: 4am EST Dec 3, 2025-6pm EST Dec 9, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EST EARLY THIS

Wednesday

NNW wind 10 to 13 kt becoming WNW 7 to 10 kt in the afternoon. Sunny. Seas around 1 ft.

Wednesday Night

W wind 6 to 9 kt increasing to 9 to 12 kt after midnight. Mostly clear. Seas around 1 ft.

Thursday

W wind 13 to 16 kt increasing to 17 to 20 kt in the afternoon. Winds could gust as high as 27 kt. Increasing clouds. Seas 1 to 2 ft.

Thursday Night

NW wind 16 to 21 kt becoming N 8 to 11 kt. Winds could gust as high as 28 kt. Mostly clear. Seas 1 to 2 ft.

Friday

N wind 6 to 9 kt becoming S in the afternoon. Increasing clouds. Seas around 1 ft.

Friday Night

WSW wind 6 to 8 kt becoming NNW after midnight. A chance of light rain before 4am. Seas around 1 ft.

Saturday

NNW wind 6 to 9 kt becoming W in the afternoon. A chance of light rain between 7am and 1pm. Seas around 1 ft.

Saturday Night

W wind around 9 kt. Mostly cloudy. Seas around 1 ft.

Sunday

NNW wind 8 to 10 kt. Partly sunny. Seas around 1 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.