Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

For More Weather Information:

New York, NY Local Forecast Office

7NM ESE Islip NY

Marine Point Forecast

[NOTICE]

Tonight
SSW 13kt⇓
1-2ft
Wednesday
SE 10kt
1ft
Wednesday Night
SSE 8kt
1ft
Thursday
S 20kt
2ft
Thursday Night
SW 19kt⇓
2ft
Juneteenth
WSW 15kt
1ft
Friday Night
WNW 12kt
1ft
Saturday
W 15kt
1ft
Saturday Night
WNW 12kt
1ft

Associated Zone Forecast which includes this point

Last Update: 3:07 pm EDT Jun 16, 2026
Forecast Valid: 9pm EDT Jun 16, 2026-6pm EDT Jun 23, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSW wind 10 to 13 kt decreasing to 7 to 10 kt after midnight. Increasing clouds. Seas 1 to 2 ft.

Wednesday

SE wind 6 to 10 kt. Mostly sunny. Seas around 1 ft.

Wednesday Night

SSE wind around 8 kt. A slight chance of showers after 2am. Seas around 1 ft.

Thursday

SSE wind 15 to 20 kt becoming SSW in the afternoon. Winds could gust as high as 30 kt. A chance of showers, mainly after 2pm. Seas around 2 ft.

Thursday Night

SW wind 16 to 19 kt becoming W 12 to 15 kt after midnight. Winds could gust as high as 26 kt. A chance of showers before 8pm. Seas around 2 ft.

Juneteenth

WSW wind 11 to 15 kt, with gusts as high as 21 kt. Partly sunny. Seas around 1 ft.

Friday Night

WNW wind 10 to 12 kt. Partly cloudy. Seas around 1 ft.

Saturday

W wind around 15 kt, with gusts as high as 23 kt. Sunny. Seas around 1 ft.

Saturday Night

WNW wind 10 to 12 kt. Mostly clear. Seas around 1 ft.

Winds and waves 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.