Coastal Waters Forecast
Issued by NWS Upton, NY
Issued by NWS Upton, NY
992 FZUS51 KOKX 171823 CWFOKX Coastal Waters Forecast National Weather Service New York NY 223 PM EDT Sun Aug 17 2025 Montauk Point NY to Sandy Hook NJ out 20 nm offshore, including Long Island Sound, the Long Island Bays, and New York Harbor ANZ300-180900- 223 PM EDT Sun Aug 17 2025 .Synopsis for the Long Island and Connecticut coastal waters... A approaching cold front to the north and west moves through the forecast waters tonight. High pressure builds in to the north Monday and moves off the northern New England coast Tuesday. A weakening frontal system approaches from the west Wednesday. The frontal system and Hurricane Erin will pass well out into the Atlantic on Thursday. High pressure will return by late week. Please refer to National Hurricane Center forecasts for further information on Erin. $$ ANZ350-180900- Moriches Inlet NY to Montauk Point NY out 20 nm- 223 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT MONDAY THROUGH TUESDAY AFTERNOON... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W after midnight, then becoming NE 15 to 20 kt with gusts up to 25 kt late. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 ft at 7 seconds. Chance of showers. Isolated tstms. .MON...NE winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 4 to 6 ft, occasionally to 8 ft. Wave Detail: E 6 ft at 7 seconds and SW 2 ft at 5 seconds. Slight chance of showers in the morning. .MON NIGHT...E winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 4 to 6 ft, occasionally to 8 ft. Wave Detail: E 6 ft at 7 seconds and SE 3 ft at 14 seconds. .TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft, occasionally to 6 ft. Wave Detail: E 4 ft at 7 seconds and SE 4 ft at 15 seconds. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft, occasionally to 8 ft. Wave Detail: SE 6 ft at 14 seconds and E 4 ft at 6 seconds. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 6 to 7 ft, occasionally to 9 ft. Wave Detail: SE 7 ft at 16 seconds and E 4 ft at 5 seconds. .WED NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 8 ft, occasionally to 10 ft, building to 7 to 10 ft, occasionally to 13 ft after midnight. .THU...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 10 to 14 ft, occasionally to 18 ft. .THU NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to 13 ft, occasionally to 17 ft. .FRI...NW winds 20 to 25 kt. Seas 6 to 9 ft, occasionally to 11 ft. .FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft, occasionally to 8 ft. Winds and seas may be higher in and near tstms. $$ ANZ353-180900- Fire Island Inlet NY to Moriches Inlet NY out 20 nm- 223 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT MONDAY THROUGH TUESDAY AFTERNOON... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W after midnight, then becoming NE 15 to 20 kt with gusts up to 25 kt late. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 1 ft at 6 seconds. Scattered tstms this evening. Chance of showers. Isolated tstms after midnight. .MON...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft, occasionally to 8 ft. Wave Detail: E 5 ft at 6 seconds and SW 2 ft at 5 seconds. Slight chance of showers in the morning. .MON NIGHT...E winds 15 to 20 kt. Seas 5 to 6 ft, occasionally to 8 ft. Wave Detail: E 6 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 3 ft at 12 seconds. .TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft, occasionally to 8 ft. Wave Detail: SE 5 ft at 15 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 6 ft at 16 seconds and E 4 ft at 6 seconds. .WED NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 8 ft, occasionally to 10 ft, building to 7 to 10 ft, occasionally to 13 ft after midnight. .THU...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to 13 ft, occasionally to 17 ft. .THU NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to 12 ft, occasionally to 15 ft. .FRI...N winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft, occasionally to 11 ft. .FRI NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft, occasionally to 8 ft. Winds and seas may be higher in and near tstms. $$ ANZ355-180900- Sandy Hook NJ to Fire Island Inlet NY out 20 nm- 223 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT MONDAY THROUGH TUESDAY AFTERNOON... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight, then becoming NE 15 to 20 kt with gusts up to 25 kt late. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 ft at 10 seconds. Scattered tstms this evening. Chance of showers. Isolated tstms after midnight. .MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft, occasionally to 6 ft. Wave Detail: SE 5 ft at 6 seconds and SE 2 ft at 14 seconds. Slight chance of showers in the morning. .MON NIGHT...E winds around 15 kt with gusts up to 20 kt. Seas 4 to 6 ft, occasionally to 8 ft. Wave Detail: E 5 ft at 7 seconds and SE 2 ft at 14 seconds. .TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft, occasionally to 6 ft. Wave Detail: E 5 ft at 7 seconds and SE 3 ft at 15 seconds. .TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft, occasionally to 6 ft. Wave Detail: E 4 ft at 7 seconds and SE 4 ft at 16 seconds. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft, occasionally to 8 ft. Wave Detail: SE 5 ft at 16 seconds and E 4 ft at 6 seconds. .WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft, occasionally to 10 ft. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 7 to 10 ft, occasionally to 13 ft. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 8 to 11 ft, occasionally to 14 ft. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft, occasionally to 10 ft. .FRI NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft, occasionally to 8 ft. Winds and seas may be higher in and near tstms. $$ ANZ332-180900- Long Island Sound East of the Mouth of the Connecticut River- 223 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY MORNING... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt late this evening, then becoming N after midnight, becoming NE 10 to 15 kt with gusts up to 25 kt late. Seas around 2 ft. Wave Detail: NE 1 ft at 2 seconds and SW 1 ft at 3 seconds. Scattered tstms, mainly this evening. Chance of showers. .MON...NE winds 15 to 20 kt with gusts up to 25 kt, becoming E 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds. .MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt, becoming NE 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds. .TUE...E winds 5 to 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 3 ft. Wave Detail: E 2 ft at 5 seconds and E 2 ft at 14 seconds. .WED...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 5 seconds and SE 2 ft at 13 seconds. .WED NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft, occasionally to 5 ft. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft, occasionally to 6 ft. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft, occasionally to 6 ft. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Winds and seas may be higher in and near tstms. $$ ANZ331-180900- Long Island Sound East of New Haven CT/Port Jefferson NY to the Mouth of the Connecticut River- 223 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY MORNING... .TONIGHT...SW winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 25 kt after midnight. Seas 1 ft or less. Wave Detail: NE 1 ft at 2 seconds and SW 1 ft at 3 seconds. Isolated tstms this evening. Chance of showers. Isolated tstms after midnight. .MON...NE winds 10 to 15 kt with gusts up to 25 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds. .MON NIGHT...E winds around 10 kt. Seas 1 ft or less. Wave Detail: E 1 ft at 3 seconds. .TUE...E winds around 10 kt. Seas 1 ft or less. Wave Detail: E 1 ft at 3 seconds. .TUE NIGHT...E winds 5 to 10 kt. Seas 1 ft or less. Wave Detail: E 1 ft at 3 seconds. .WED...E winds around 10 kt. Seas 1 ft or less, then around 2 ft in the afternoon. Wave Detail: E 1 ft at 3 seconds. .WED NIGHT...E winds 10 to 15 kt. Seas around 2 ft. .THU...NE winds around 15 kt with gusts up to 25 kt. Seas around 2 ft. .THU NIGHT...NE winds around 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas 1 ft or less. Winds and seas may be higher in and near tstms. $$ ANZ335-180900- Long Island Sound West of New Haven CT/Port Jefferson NY- 223 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY MORNING... .TONIGHT...SW winds 5 to 10 kt, becoming W late this evening, then becoming NE 10 to 15 kt with gusts up to 25 kt after midnight. Seas 1 ft or less. Wave Detail: NE 1 ft at 2 seconds and SW 1 ft at 2 seconds. Chance of showers with isolated tstms this evening, then slight chance of showers after midnight. .MON...NE winds 15 to 20 kt with gusts up to 25 kt, becoming E 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds. .MON NIGHT...E winds around 10 kt. Seas 1 ft or less. Wave Detail: E 1 ft at 4 seconds. .TUE...E winds around 10 kt. Seas 1 ft or less. Wave Detail: E 1 ft at 3 seconds. .TUE NIGHT...E winds 5 to 10 kt. Seas 1 ft or less. Wave Detail: E 1 ft at 3 seconds. .WED...E winds around 10 kt. Seas around 2 ft. Wave Detail: E 1 ft at 3 seconds. .WED NIGHT...E winds 10 to 15 kt. Seas around 2 ft. .THU...NE winds around 15 kt with gusts up to 20 kt. Seas around 2 ft. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas 1 ft or less. Winds and seas may be higher in and near tstms. $$ ANZ338-180900- New York Harbor- 223 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY MORNING... .TONIGHT...SW winds 5 to 10 kt, becoming N after midnight, then increasing to 10 to 15 kt with gusts up to 25 kt late. Waves 1 to 2 ft. Scattered tstms and chance of showers this evening, then slight chance of showers after midnight. .MON...NE winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. Wave Detail: NE 2 ft at 3 seconds. .MON NIGHT...E winds 10 to 15 kt. Waves 2 to 3 ft. Wave Detail: E 2 ft at 3 seconds. .TUE...E winds around 10 kt. Waves 2 to 3 ft. .TUE NIGHT...E winds around 10 kt. Waves around 2 ft. .WED...E winds 10 to 15 kt. Waves around 2 ft. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .THU...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .FRI...NE winds 10 to 15 kt. Waves 2 to 3 ft. .FRI NIGHT...SW winds 10 to 15 kt. Waves around 2 ft. Winds and waves may be higher in and near tstms. $$ ANZ340-180900- Peconic and Gardiners Bays- 223 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY MORNING... .TONIGHT...SW winds 5 to 10 kt, becoming N after midnight, then becoming NE 10 to 15 kt with gusts up to 25 kt late. Waves 1 ft or less. Chance of showers. .MON...NE winds 10 to 15 kt with gusts up to 25 kt. Waves 1 to 2 ft. .MON NIGHT...E winds 5 to 10 kt. Waves 1 to 2 ft. .TUE...E winds 5 to 10 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. Waves 1 ft or less. .WED NIGHT...E winds 10 to 15 kt. Waves 1 ft or less, then around 2 ft after midnight. .THU...NE winds 10 to 15 kt with gusts up to 25 kt. Waves around 2 ft. .THU NIGHT...NE winds around 15 kt with gusts up to 25 kt. Waves around 2 ft. .FRI...NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Waves 1 ft or less. $$ ANZ345-180900- South Shore Bays from Jones Inlet through Shinnecock Bay- 223 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY MORNING... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt late this evening, then becoming NW after midnight, becoming NE 10 to 15 kt with gusts up to 25 kt late. Waves 1 ft or less. Isolated tstms this evening. Chance of showers. Isolated tstms after midnight. .MON...NE winds 10 to 15 kt with gusts up to 25 kt. Waves 1 ft or less. .MON NIGHT...E winds 10 to 15 kt. Waves 1 ft or less. .TUE...E winds around 10 kt. Waves 1 ft or less. .TUE NIGHT...E winds 5 to 10 kt. Waves 1 ft or less. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Waves 1 ft or less, then around 2 ft in the afternoon. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. .FRI...N winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt. Waves 1 ft or less. Winds and waves may be higher in and near tstms. $$