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Cos Cob, CT Coastal Forecast

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Coastal Waters Forecast
National Weather Service New York NY
326 AM EDT Sun May 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

ANZ300-181945-
326 AM EDT Sun May 18 2025

.Synopsis for the Long Island and Connecticut coastal waters...
Low pressure is slow to exit the New England Coast and will send
several surface troughs through the area through Monday. High
pressure noses in from the north thereafter through Tuesday night. A
frontal system impacts the area Wednesday into Friday night,
moving northeast of the region Saturday.

$$

ANZ350-181945-
Moriches Inlet NY to Montauk Point NY out 20 nm-
326 AM EDT Sun May 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THIS MORNING
THROUGH MONDAY AFTERNOON...

.TODAY...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft, occasionally to 8 ft. Wave Detail: S 5 ft at 7 seconds.
.TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft, occasionally to 8 ft. Wave Detail: SW 5 ft at 6 seconds.
.MON...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft, occasionally to 6 ft. Wave Detail: W 4 ft at 5 seconds and
S 3 ft at 8 seconds.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft, occasionally to 5 ft. Wave Detail: NW 3 ft at
5 seconds and S 1 ft at 8 seconds.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt, becoming N
5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 3 ft
at 4 seconds and S 1 ft at 8 seconds.
.TUE NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 6 seconds and W 1 ft at 4 seconds.
.WED...E winds 15 to 20 kt. Seas 2 to 4 ft, occasionally to 5 ft.
Chance of showers. Vsby 1 to 3 nm.
.WED NIGHT...E winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft, occasionally to 8 ft. Showers. Vsby 1 to 3 nm.
.THU...NE winds 25 to 30 kt. Seas 6 to 9 ft, occasionally to
11 ft. Showers likely.
.THU NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 9 ft, occasionally to 11 ft. Chance of showers.

$$

ANZ353-181945-
Fire Island Inlet NY to Moriches Inlet NY out 20 nm-
326 AM EDT Sun May 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THIS MORNING
THROUGH MONDAY AFTERNOON...

.TODAY...W winds 15 to 20 kt. Seas 3 to 5 ft, occasionally to
6 ft. Wave Detail: S 4 ft at 7 seconds and W 3 ft at 4 seconds.
.TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
5 ft, occasionally to 6 ft. Wave Detail: SW 4 ft at 6 seconds.
.MON...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft, occasionally to 5 ft. Wave Detail: W 4 ft at 5 seconds and
S 2 ft at 7 seconds.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft, occasionally to 5 ft. Wave Detail: NW 3 ft at
4 seconds and S 1 ft at 7 seconds.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: N
3 ft at 4 seconds and S 1 ft at 8 seconds.
.TUE NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 6 seconds and W 1 ft at 4 seconds.
.WED...E winds 15 to 20 kt. Seas 2 to 4 ft, occasionally to 5 ft.
Showers likely. Vsby 1 to 3 nm.
.WED NIGHT...E winds 20 to 25 kt with gusts up to 30 kt. Seas
5 to 7 ft, occasionally to 9 ft. Showers. Vsby 1 to 3 nm.
.THU...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft, occasionally to 11 ft. Showers likely.
.THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
6 to 8 ft, occasionally to 10 ft. Chance of showers.

$$

ANZ355-181945-
Sandy Hook NJ to Fire Island Inlet NY out 20 nm-
326 AM EDT Sun May 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THIS MORNING
THROUGH MONDAY AFTERNOON...

.TODAY...W winds 15 to 20 kt. Gusts up to 30 kt this afternoon.
Seas 3 to 5 ft, occasionally to 6 ft. Wave Detail: W 3 ft at
4 seconds and S 3 ft at 7 seconds.
.TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft, occasionally to 6 ft. Wave Detail: W 4 ft at 4 seconds and
S 3 ft at 7 seconds.
.MON...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft, occasionally to 5 ft. Wave Detail: W 4 ft at 4 seconds and
S 2 ft at 7 seconds.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and S 1 ft at
8 seconds.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NW
2 ft at 4 seconds and SE 1 ft at 8 seconds.
.TUE NIGHT...E winds 5 to 10 kt. Seas 1 ft or less, then around
2 ft after midnight. Wave Detail: W 1 ft at 3 seconds and SE 1 ft
at 9 seconds, becoming SE 2 ft at 9 seconds and SE 1 ft at
2 seconds.
.WED...E winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft, occasionally to 5 ft. Showers likely. Vsby 1 to 3 nm.
.WED NIGHT...E winds 20 to 25 kt with gusts up to 30 kt. Seas
5 to 7 ft, occasionally to 9 ft. Showers. Vsby 1 to 3 nm.
.THU...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft, occasionally to 9 ft. Showers likely.
.THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 7 ft, occasionally to 9 ft. Chance of showers.

$$

ANZ332-181945-
Long Island Sound East of the Mouth of the Connecticut River-
326 AM EDT Sun May 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THIS MORNING
THROUGH MONDAY AFTERNOON...

.TODAY...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 ft at 7 seconds.
.TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: W 3 ft at 4 seconds and SE 1 ft at 8 seconds.
.MON...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: W 3 ft at 4 seconds.
.MON NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Seas
around 2 ft. Wave Detail: NW 2 ft at 4 seconds.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt, becoming N
5 to 10 kt in the afternoon. Seas around 2 ft in the morning,
then 1 ft or less. Wave Detail: NW 2 ft at 3 seconds, becoming NW
1 ft at 3 seconds.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 1 ft or less. Wave Detail:
NE 1 ft at 3 seconds.
.WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Chance of showers.
.WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft, occasionally to 6 ft. Showers. Vsby 1 to 3 nm.
.THU...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft, occasionally to 8 ft. Showers likely.
.THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft, occasionally to 6 ft. Chance of showers.

$$

ANZ331-181945-
Long Island Sound East of New Haven CT/Port Jefferson NY to the
Mouth of the Connecticut River-
326 AM EDT Sun May 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THIS MORNING
THROUGH MONDAY AFTERNOON...

.TODAY...W winds 10 to 15 kt, increasing to 15 to 20 kt late.
Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds.
.TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: W 3 ft at 4 seconds.
.MON...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
3 ft. Wave Detail: W 3 ft at 4 seconds.
.MON NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 2 to 3 ft. Wave Detail: NW 2 ft at
4 seconds.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt, becoming N
5 to 10 kt in the afternoon. Seas around 2 ft in the morning,
then 1 ft or less. Wave Detail: NW 2 ft at 3 seconds, becoming NW
1 ft at 3 seconds.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 1 ft or less.
.WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 1 to
2 ft. Showers likely. Vsby 1 to 3 nm.
.WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft, occasionally to 5 ft. Showers. Vsby 1 to 3 nm.
.THU...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
4 ft, occasionally to 5 ft. Showers likely.
.THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft. Chance of showers.

$$

ANZ335-181945-
Long Island Sound West of New Haven CT/Port Jefferson NY-
326 AM EDT Sun May 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THIS MORNING
THROUGH MONDAY AFTERNOON...

.TODAY...W winds 10 to 15 kt with gusts up to 20 kt, increasing
to 15 to 20 kt with gusts up to 30 kt late this morning and
afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds.
.TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: W 2 ft at 3 seconds.
.MON...NW winds 15 to 20 kt with gusts up to 30 kt. Seas around
2 ft. Wave Detail: W 2 ft at 3 seconds.
.MON NIGHT...NW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas around 2 ft. Wave Detail: NW 2 ft at
3 seconds.
.TUE...N winds 10 to 15 kt with gusts up to 20 kt, diminishing to
5 to 10 kt in the afternoon. Seas around 2 ft in the morning,
then 1 ft or less. Wave Detail: NW 1 ft at 2 seconds.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 1 ft or less.
.WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 1 to
2 ft. Showers likely. Vsby 1 to 3 nm.
.WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft, occasionally to 5 ft. Showers. Vsby 1 to 3 nm.
.THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft, occasionally to 5 ft. Showers likely.
.THU NIGHT...N winds 15 to 20 kt. Seas 2 to 3 ft. Chance of
showers.

$$

ANZ338-181945-
New York Harbor-
326 AM EDT Sun May 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THIS MORNING
THROUGH MONDAY AFTERNOON...

.TODAY...W winds 15 to 20 kt. Gusts up to 30 kt this afternoon.
Waves around 2 ft. Wave Detail: W 2 ft at 2 seconds.
.TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Waves
around 2 ft. Wave Detail: W 2 ft at 3 seconds.
.MON...NW winds 15 to 20 kt with gusts up to 30 kt. Waves around
2 ft. Wave Detail: NW 2 ft at 2 seconds.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt after midnight.
Waves around 2 ft. Wave Detail: NW 2 ft at 2 seconds.
.TUE...NW winds 10 to 15 kt, becoming N 5 to 10 kt in the
afternoon. Waves 1 ft or less. Wave Detail: NW 1 ft at 2 seconds.
.TUE NIGHT...E winds 5 to 10 kt. Waves 1 ft or less.
.WED...E winds 15 to 20 kt. Waves 2 to 3 ft. Showers. Vsby 1 to
3 nm.
.WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Waves
2 to 4 ft, occasionally to 5 ft. Showers. Vsby 1 to 3 nm.
.THU...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to
4 ft, occasionally to 5 ft. Showers likely.
.THU NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 3 ft. Chance of showers.

$$

ANZ340-181945-
Peconic and Gardiners Bays-
326 AM EDT Sun May 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THIS MORNING
THROUGH MONDAY AFTERNOON...

.TODAY...W winds 10 to 15 kt with gusts up to 25 kt. Waves 1 ft
or less.
.TONIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Waves
1 ft or less, then around 2 ft after midnight.
.MON...NW winds 15 to 20 kt with gusts up to 25 kt. Waves around
2 ft.
.MON NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves
1 ft or less.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt, becoming N
5 to 10 kt in the afternoon. Waves 1 ft or less.
.TUE NIGHT...NE 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 to
2 ft. Chance of showers. Vsby 1 to 3 nm.
.WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Waves
2 to 3 ft. Showers. Vsby 1 to 3 nm.
.THU...NE winds around 20 kt with gusts up to 30 kt. Waves 2 to
3 ft. Showers likely.
.THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Waves
2 to 3 ft. Chance of showers.

$$

ANZ345-181945-
South Shore Bays from Jones Inlet through Shinnecock Bay-
326 AM EDT Sun May 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT THIS MORNING
THROUGH MONDAY AFTERNOON...

.TODAY...W winds 10 to 15 kt with gusts up to 25 kt. Waves 1 ft
or less.
.TONIGHT...NW winds around 15 kt with gusts up to 25 kt. Waves
1 ft or less.
.MON...NW winds around 15 kt with gusts up to 25 kt. Waves 1 ft
or less.
.MON NIGHT...NW winds 10 to 15 kt with gusts up to 25 kt. Waves
1 ft or less.
.TUE...NW winds 10 to 15 kt with gusts up to 20 kt, becoming N
5 to 10 kt in the afternoon. 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. Showers likely. Vsby 1 to 3 nm.
.WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Waves
around 2 ft. Showers. Vsby 1 to 3 nm.
.THU...NE winds 15 to 20 kt with gusts up to 30 kt. Waves around
2 ft. Showers likely.
.THU NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Waves
1 ft or less. Chance of showers.

$$


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