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Last Update: 242 PM EDT Wed May 20 2026
For More Weather Information:
17NM SE Islip NY
Marine Zone Forecast
...SEVERE THUNDERSTORM WATCH 235 IN EFFECT UNTIL 9 PM EDT THIS EVENING...
Rest Of Today
SW winds 15 to 20 kt with gusts up to 25 kt. Seas around 4 ft, occasionally to 5 ft. Wave detail: S 4 ft at 7 seconds. Slight chance of showers and tstms early this afternoon, then showers likely with chance of tstms late.
Tonight
W winds 10 to 15 kt with gusts up to 20 kt, becoming N 5 to 10 kt after midnight. Seas 3 to 4 ft, occasionally to 5 ft. Wave detail: S 4 ft at 7 seconds and SE 1 ft at 9 seconds. Showers likely with chance of tstms in the evening, then chance of showers after midnight.
Thu
NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave detail: S 3 ft at 6 seconds and NE 2 ft at 3 seconds. Showers likely, mainly in the morning.
Thu Night
SE winds 5 to 10 kt, becoming E after midnight. Seas 2 to 3 ft. Wave detail: SE 2 ft at 5 seconds and SE 1 ft at 9 seconds.
Fri
E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft, occasionally to 5 ft. Wave detail: SE 3 ft at 6 seconds and SE 2 ft at 10 seconds.
Fri Night
E winds 10 to 15 kt. Seas 3 to 4 ft, occasionally to 5 ft. Wave detail: SE 3 ft at 6 seconds. Chance of showers after midnight.
Sat
E winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Seas 4 to 6 ft, occasionally to 8 ft. Showers.
Sat Night
E winds 20 to 25 kt. Seas 6 to 7 ft, occasionally to 9 ft. Showers.
Sun
E winds 20 to 25 kt. Seas 6 to 7 ft, occasionally to 9 ft. Showers likely.
Sun Night
NE winds 5 to 10 kt. Seas 6 to 7 ft, occasionally to 9 ft. Chance of showers.
Mon
W winds 5 to 10 kt. Seas 5 to 7 ft, occasionally to 9 ft. Chance of showers.
Mon Night
W winds 5 to 10 kt. Seas 4 to 5 ft, occasionally to 6 ft. Chance of showers.
winds and seas may be higher in and near tstms.
winds and seas may be higher in and near tstms.
Additional Forecasts and Information
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