Coastal Waters Forecast
Issued by NWS Upton, NY
Issued by NWS Upton, NY
137 FZUS51 KOKX 181806 CWFOKX Coastal Waters Forecast National Weather Service New York NY 206 PM EDT Mon Aug 18 2025 Montauk Point NY to Sandy Hook NJ out 20 nm offshore, including Long Island Sound, the Long Island Bays, and New York Harbor ANZ300-190730- 206 PM EDT Mon Aug 18 2025 .Synopsis for the Long Island and Connecticut coastal waters... High pressure will build over the waters through Tuesday then gradually shift east through Wednesday night as a weakening frontal system approaches from the west. Hurricane Erin will pass well to the southeast on Thursday, bringing indirect impacts mainly along the shoreline. High pressure will return by late week, then a cold front will approach from the west late this weekend. Please refer to National Hurricane Center forecasts for further information on Erin. $$ ANZ350-190730- Moriches Inlet NY to Montauk Point NY out 20 nm- 206 PM EDT Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .TONIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft, occasionally to 8 ft. Wave Detail: E 5 ft at 7 seconds and SE 3 ft at 13 seconds. .TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft, occasionally to 6 ft. Wave Detail: E 4 ft at 6 seconds and SE 4 ft at 15 seconds. .TUE NIGHT...E winds around 10 kt. Seas 5 to 6 ft, occasionally to 8 ft. Wave Detail: SE 6 ft at 14 seconds and E 4 ft at 6 seconds. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 6 to 7 ft, occasionally to 9 ft. Wave Detail: SE 6 ft at 16 seconds and E 3 ft at 5 seconds. Slight chance of showers in the afternoon. .WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 7 to 9 ft, occasionally to 11 ft. Wave Detail: SE 8 ft at 16 seconds and E 5 ft at 6 seconds. Slight chance of showers. .THU...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 9 to 13 ft, occasionally to 17 ft. Wave Detail: E 9 ft at 7 seconds and S 9 ft at 18 seconds. .THU NIGHT...NE winds 25 to 30 kt. Seas 11 to 15 ft, occasionally to 19 ft, building to 13 to 17 ft, occasionally to 22 ft after midnight. .FRI...NE winds 25 to 30 kt. Seas 11 to 15 ft, occasionally to 19 ft. .FRI NIGHT...SE winds 10 to 15 kt with gusts up to 25 kt. Seas 7 to 10 ft, occasionally to 13 ft. .SAT...SW winds around 10 kt with gusts up to 20 kt. Seas 5 to 7 ft, occasionally to 9 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft, occasionally to 6 ft. $$ ANZ353-190730- Fire Island Inlet NY to Moriches Inlet NY out 20 nm- 206 PM EDT Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .TONIGHT...E winds around 15 kt with gusts up to 20 kt. Seas 5 to 6 ft, occasionally to 8 ft. Wave Detail: E 5 ft at 7 seconds and SE 3 ft at 13 seconds. .TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 6 ft, occasionally to 8 ft. Wave Detail: E 5 ft at 7 seconds and SE 4 ft at 15 seconds. .TUE NIGHT...E winds around 10 kt. Seas 5 to 6 ft, occasionally to 8 ft. Wave Detail: SE 5 ft at 14 seconds and E 4 ft at 6 seconds. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft, occasionally to 9 ft. Wave Detail: SE 7 ft at 16 seconds and E 3 ft at 6 seconds. Slight chance of showers in the afternoon. .WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft, occasionally to 11 ft. Wave Detail: SE 8 ft at 16 seconds and E 5 ft at 6 seconds. Slight chance of showers. .THU...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 9 to 13 ft, occasionally to 17 ft, building to 11 to 14 ft, occasionally to 18 ft in the afternoon. Wave Detail: E 9 ft at 7 seconds and SE 9 ft at 18 seconds, becoming S 10 ft at 18 seconds and E 9 ft at 8 seconds. .THU NIGHT...NE winds 25 to 30 kt. Seas 12 to 15 ft, occasionally to 19 ft. .FRI...NE winds 25 to 30 kt. Seas 10 to 14 ft, occasionally to 18 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 7 to 10 ft, occasionally to 13 ft. .SAT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft, occasionally to 9 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 5 ft, occasionally to 6 ft. $$ ANZ355-190730- Sandy Hook NJ to Fire Island Inlet NY out 20 nm- 206 PM EDT Mon Aug 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .TONIGHT...E winds around 15 kt with gusts up to 20 kt. Seas 4 to 6 ft, occasionally to 8 ft. Wave Detail: E 5 ft at 7 seconds and SE 2 ft at 14 seconds. .TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft, occasionally to 6 ft. Wave Detail: E 5 ft at 7 seconds and SE 3 ft at 12 seconds. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft, occasionally to 6 ft. Wave Detail: E 4 ft at 6 seconds and SE 4 ft at 13 seconds. .WED...E winds 10 to 15 kt. Seas 4 to 6 ft, occasionally to 8 ft. Wave Detail: SE 6 ft at 16 seconds and E 3 ft at 6 seconds. Slight chance of showers. .WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft, occasionally to 10 ft. Wave Detail: SE 7 ft at 16 seconds and E 4 ft at 6 seconds. Slight chance of showers. .THU...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to 11 ft, occasionally to 14 ft. Wave Detail: E 8 ft at 8 seconds and SE 8 ft at 17 seconds. .THU NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to 13 ft, occasionally to 17 ft. .FRI...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to 11 ft, occasionally to 14 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 6 to 9 ft, occasionally to 11 ft. .SAT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft, occasionally to 9 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft, occasionally to 6 ft. $$ ANZ332-190730- Long Island Sound East of the Mouth of the Connecticut River- 206 PM EDT Mon Aug 18 2025 .TONIGHT...E winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 4 ft, occasionally to 5 ft. Wave Detail: E 3 ft at 5 seconds. .TUE...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds. .TUE NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft, occasionally to 5 ft. Wave Detail: E 2 ft at 5 seconds and E 2 ft at 14 seconds. .WED...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft, occasionally to 5 ft. Wave Detail: E 2 ft at 5 seconds and SE 2 ft at 13 seconds. Slight chance of showers in the afternoon. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft, occasionally to 6 ft. Wave Detail: E 3 ft at 5 seconds and E 2 ft at 15 seconds. Slight chance of showers. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft, occasionally to 8 ft. Wave Detail: E 4 ft at 5 seconds and E 3 ft at 17 seconds. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft, occasionally to 9 ft. .FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft, occasionally to 9 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft, occasionally to 6 ft. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SAT NIGHT...S winds around 10 kt. Seas 2 to 3 ft. $$ ANZ331-190730- Long Island Sound East of New Haven CT/Port Jefferson NY to the Mouth of the Connecticut River- 206 PM EDT Mon Aug 18 2025 .TONIGHT...E winds around 10 kt. Seas around 2 ft. Wave Detail: E 1 ft at 3 seconds. .TUE...E winds around 10 kt. Seas around 2 ft. Wave Detail: E 1 ft at 3 seconds. .TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 ft at 3 seconds. .WED...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 ft at 3 seconds. Slight chance of showers in the afternoon. .WED NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds. Slight chance of showers. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 4 seconds. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft, occasionally to 5 ft. .FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas 1 ft or less. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. $$ ANZ335-190730- Long Island Sound West of New Haven CT/Port Jefferson NY- 206 PM EDT Mon Aug 18 2025 .TONIGHT...E winds around 10 kt. Seas around 2 ft. Wave Detail: E 1 ft at 3 seconds. .TUE...E winds around 10 kt. Seas around 2 ft. Wave Detail: E 1 ft at 3 seconds. .TUE NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 1 ft at 3 seconds. .WED...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: E 1 ft at 3 seconds. Slight chance of showers in the afternoon. .WED NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds. Slight chance of showers. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 4 seconds. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .FRI...NE winds 15 to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas around 2 ft. .SAT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 1 ft or less. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. $$ ANZ338-190730- New York Harbor- 206 PM EDT Mon Aug 18 2025 .TONIGHT...E winds 10 to 15 kt. Waves 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds. .TUE...E winds around 10 kt. Waves 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds. .TUE NIGHT...E winds around 10 kt. Waves around 2 ft. .WED...E winds 10 to 15 kt. Waves around 2 ft. Wave Detail: E 2 ft at 3 seconds. Slight chance of showers in the afternoon. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds. Slight chance of showers. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 4 ft, occasionally to 5 ft. Wave Detail: E 3 ft at 4 seconds. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 4 ft, occasionally to 5 ft. .FRI...NE winds 15 to 20 kt. Waves 2 to 4 ft, occasionally to 5 ft. .FRI NIGHT...S winds 10 to 15 kt. Waves 2 to 4 ft, occasionally to 5 ft. .SAT...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft, occasionally to 5 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. $$ ANZ340-190730- Peconic and Gardiners Bays- 206 PM EDT Mon Aug 18 2025 .TONIGHT...E winds around 10 kt. Waves 1 to 2 ft. .TUE...E winds 5 to 10 kt. Waves 1 to 2 ft. .TUE NIGHT...E winds 5 to 10 kt. Waves around 2 ft. .WED...E winds 5 to 10 kt. Waves around 2 ft. Slight chance of showers in the afternoon. .WED NIGHT...E winds 10 to 15 kt. Waves 2 to 3 ft. Slight chance of showers. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 4 ft. .FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 4 ft. .FRI NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .SAT...SW winds 5 to 10 kt with gusts up to 20 kt. Waves 1 to 2 ft. .SAT NIGHT...S winds around 10 kt. Waves 1 ft or less. $$ ANZ345-190730- South Shore Bays from Jones Inlet through Shinnecock Bay- 206 PM EDT Mon Aug 18 2025 .TONIGHT...E winds 10 to 15 kt. Waves 1 ft or less. .TUE...E winds 10 to 15 kt with gusts up to 20 kt. Waves 1 ft or less. .TUE NIGHT...E winds 5 to 10 kt. Waves 1 ft or less. .WED...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 1 ft or less. Slight chance of showers in the afternoon. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Waves 1 ft or less. Slight chance of showers. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Waves 1 ft or less, then around 2 ft in the afternoon. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Waves around 2 ft. .FRI...NE winds 15 to 20 kt with gusts up to 30 kt. Waves 1 to 2 ft. .FRI NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Waves 1 ft or less. .SAT...S winds 10 to 15 kt with gusts up to 20 kt. Waves 1 ft or less. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves 1 ft or less. $$