Coastal Waters Forecast
Issued by NWS Upton, NY

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Coastal Waters Forecast
National Weather Service New York NY
1002 PM EDT Thu Aug 21 2025

Montauk Point NY to Sandy Hook NJ out 20 nm offshore, including
Long Island Sound, the Long Island Bays, and New York Harbor

ANZ300-221430-
1002 PM EDT Thu Aug 21 2025

.Synopsis for the Long Island and Connecticut coastal waters...
Hurricane Erin continues to track northeast into the open
Atlantic ocean overnight. High pressure builds in thereafter for
the end of the week into at least the start of the weekend. A
frontal system approaches Sunday and moves through the area
Monday. High pressure then gradually builds in for the middle to
end of next week. Please refer to NHC forecasts for further
information on Hurricane Erin.

$$

ANZ350-221430-
Moriches Inlet NY to Montauk Point NY out 20 nm-
1002 PM EDT Thu Aug 21 2025

...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON...

.OVERNIGHT...NE winds 25 to 30 kt, becoming N 20 to 25 kt late.
Gusts to 35 kt. Seas 14 to 17 ft, occasionally to 22 ft. Wave
Detail: E 11 ft at 8 seconds and S 11 ft at 17 seconds.
.FRI...N winds 20 to 25 kt with gusts up to 35 kt, becoming NE
10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 11 to
15 ft, occasionally to 19 ft, subsiding to 8 to 11 ft,
occasionally to 14 ft in the afternoon. Wave Detail: SE 11 ft at
16 seconds and E 10 ft at 9 seconds, becoming E 10 ft at
12 seconds.
.FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
6 to 9 ft, occasionally to 11 ft, subsiding to 5 to 7 ft,
occasionally to 9 ft after midnight. Wave Detail: E 8 ft at
11 seconds, becoming E 7 ft at 11 seconds.
.SAT...SW winds 5 to 10 kt. Seas 4 to 6 ft, occasionally to 8 ft.
Wave Detail: E 6 ft at 11 seconds.
.SAT NIGHT...S winds around 10 kt. Seas 4 to 5 ft, occasionally
to 6 ft. Wave Detail: E 4 ft at 12 seconds and SW 3 ft at
5 seconds.
.SUN...S winds around 10 kt. Seas around 4 ft, occasionally to
5 ft. Wave Detail: S 3 ft at 5 seconds and E 3 ft at 11 seconds.
.SUN NIGHT...S winds 5 to 10 kt. Seas 3 to 4 ft, occasionally to
5 ft. Chance of showers after midnight.
.MON...S winds 5 to 10 kt. Seas around 3 ft. Chance of showers.
.MON NIGHT...W winds around 10 kt. Seas 3 to 5 ft, occasionally
to 6 ft.
.TUE...W winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft, occasionally to 8 ft.
.TUE NIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft, occasionally to
8 ft.

$$

ANZ353-221430-
Fire Island Inlet NY to Moriches Inlet NY out 20 nm-
1002 PM EDT Thu Aug 21 2025

...GALE WARNING IN EFFECT UNTIL 6 AM EDT FRIDAY...

.OVERNIGHT...NE winds 25 to 30 kt, becoming N 20 to 25 kt. Gusts
to 35 kt. Seas 12 to 16 ft, occasionally to 20 ft. Wave Detail: E
11 ft at 9 seconds and S 10 ft at 17 seconds.
.FRI...N winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 9 to
13 ft, occasionally to 17 ft, subsiding to 8 to 11 ft,
occasionally to 14 ft in the afternoon. Wave Detail: E 10 ft at
10 seconds and SE 8 ft at 15 seconds, becoming E 9 ft at
13 seconds.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 7 to 9 ft, occasionally to
11 ft, subsiding to 6 to 7 ft, occasionally to 9 ft after
midnight. Wave Detail: E 8 ft at 12 seconds, becoming E 7 ft at
11 seconds.
.SAT...SW winds 5 to 10 kt. Seas 4 to 6 ft, occasionally to 8 ft.
Wave Detail: E 6 ft at 11 seconds and S 1 ft at 9 seconds.
.SAT NIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft, occasionally to
6 ft. Wave Detail: E 5 ft at 12 seconds and S 3 ft at 8 seconds.
.SUN...S winds around 10 kt. Seas 4 to 5 ft, occasionally to
6 ft. Wave Detail: E 4 ft at 11 seconds and S 3 ft at 4 seconds.
.SUN NIGHT...S winds around 10 kt. Seas 3 to 4 ft, occasionally
to 5 ft. Chance of showers after midnight.
.MON...SW winds 5 to 10 kt. Seas around 3 ft. Chance of showers.
.MON NIGHT...W winds around 10 kt. Seas 3 to 5 ft, occasionally
to 6 ft.
.TUE...W winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft, occasionally to 8 ft.
.TUE NIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft, occasionally to
8 ft.

$$

ANZ355-221430-
Sandy Hook NJ to Fire Island Inlet NY out 20 nm-
1002 PM EDT Thu Aug 21 2025

...GALE WARNING IN EFFECT UNTIL 6 AM EDT FRIDAY...

.OVERNIGHT...NE winds 20 to 25 kt, becoming N 15 to 20 kt late.
Gusts up to 35 kt. Seas 9 to 13 ft, occasionally to 17 ft. Wave
Detail: E 9 ft at 9 seconds and SE 8 ft at 17 seconds.
.FRI...N winds 15 to 20 kt, becoming NE 5 to 10 kt in the
afternoon. Seas 8 to 11 ft, occasionally to 14 ft. Wave Detail: E
8 ft at 10 seconds and SE 8 ft at 14 seconds.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 5 to 8 ft, occasionally to
10 ft. Wave Detail: E 7 ft at 11 seconds.
.SAT...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 4 to 6 ft, occasionally to 8 ft.
Wave Detail: E 6 ft at 11 seconds.
.SAT NIGHT...S 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
12 seconds and S 3 ft at 5 seconds.
.SUN...S winds 10 to 15 kt. Gusts up to 25 kt in the afternoon.
Seas 3 to 4 ft, occasionally to 5 ft. Wave Detail: E 4 ft at
11 seconds and S 3 ft at 5 seconds.
.SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft,
occasionally to 5 ft. Chance of showers after midnight.
.MON...SW winds 5 to 10 kt. Seas 2 to 3 ft. Chance of showers.
.MON NIGHT...W winds around 10 kt. Seas 3 to 4 ft, occasionally
to 5 ft.
.TUE...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft, occasionally to 6 ft.
.TUE NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft, occasionally to 6 ft.

$$

ANZ332-221430-
Long Island Sound East of the Mouth of the Connecticut River-
1002 PM EDT Thu Aug 21 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

.OVERNIGHT...NE winds 20 to 25 kt, becoming N 15 to 20 kt late.
Gusts to 30 kt. Seas 5 to 7 ft, occasionally to 9 ft. Wave
Detail: NE 6 ft at 7 seconds and E 4 ft at 17 seconds.
.FRI...N winds 15 to 20 kt, becoming NE 5 to 10 kt in the
afternoon. Seas 5 to 7 ft, occasionally to 9 ft, subsiding to
3 to 5 ft, occasionally to 6 ft in the afternoon. Wave Detail: NE
5 ft at 7 seconds and E 5 ft at 16 seconds, becoming E 4 ft at
7 seconds.
.FRI NIGHT...SW winds around 5 kt. Seas 3 to 5 ft, occasionally
to 6 ft. Wave Detail: E 3 ft at 8 seconds.
.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft
at 8 seconds and SW 1 ft at 2 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 9 seconds and SW 1 ft at 2 seconds.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft
at 3 seconds and E 1 ft at 8 seconds.
.SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Chance of
showers after midnight.
.MON...S winds 5 to 10 kt. Seas around 2 ft. Chance of showers.
.MON NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE...W winds 5 to 10 kt. Seas 2 to 3 ft.
.TUE NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.

$$

ANZ331-221430-
Long Island Sound East of New Haven CT/Port Jefferson NY to the
Mouth of the Connecticut River-
1002 PM EDT Thu Aug 21 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

.OVERNIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas
2 to 4 ft, occasionally to 5 ft. Wave Detail: NE 4 ft at
4 seconds.
.FRI...N winds 15 to 20 kt, diminishing to 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 1 ft or less. Wave Detail:
SW 1 ft at 2 seconds and E 1 ft at 5 seconds.
.SAT...SW winds 5 to 10 kt. Seas 1 ft or less. Wave Detail: SW
1 ft at 2 seconds.
.SAT NIGHT...S winds around 10 kt. Seas 1 ft or less. Wave
Detail: SW 1 ft at 3 seconds.
.SUN...S winds 10 to 15 kt. Seas 1 ft or less. Wave Detail: S
1 ft at 3 seconds.
.SUN NIGHT...S winds 5 to 10 kt. Seas 1 ft or less. Chance of
showers after midnight.
.MON...S winds 5 to 10 kt. Seas 1 ft or less. Chance of showers.
.MON NIGHT...W winds 5 to 10 kt. Seas 1 ft or less.
.TUE...W winds 5 to 10 kt. Seas 1 ft or less.
.TUE NIGHT...W winds around 10 kt. Seas 1 ft or less.

$$

ANZ335-221430-
Long Island Sound West of New Haven CT/Port Jefferson NY-
1002 PM EDT Thu Aug 21 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT FRIDAY...

.OVERNIGHT...NE winds 15 to 20 kt with gusts to 30 kt, becoming N
10 to 15 kt with gusts to 25 kt late. Seas 2 to 4 ft,
occasionally to 5 ft. Wave Detail: NE 3 ft at 5 seconds.
.FRI...N 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: NE 2 ft
at 4 seconds.
.FRI NIGHT...SW winds 5 to 10 kt. Seas 1 ft or less. Wave Detail:
E 1 ft at 4 seconds.
.SAT...SW winds 5 to 10 kt. Seas 1 ft or less.
.SAT NIGHT...S winds 10 to 15 kt. Seas 1 ft or less. Wave Detail:
S 1 ft at 2 seconds.
.SUN...S winds 10 to 15 kt. Seas 1 ft or less. Wave Detail: S
1 ft at 2 seconds.
.SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 1 ft or less.
Chance of showers.
.MON...SW winds 5 to 10 kt. Seas 1 ft or less. Showers likely.
.MON NIGHT...W winds 5 to 10 kt. Seas 1 ft or less.
.TUE...W winds 5 to 10 kt. Seas 1 ft or less.
.TUE NIGHT...W winds around 10 kt. Seas 1 ft or less.

$$

ANZ338-221430-
New York Harbor-
1002 PM EDT Thu Aug 21 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM EDT FRIDAY...

.OVERNIGHT...NE winds 15 to 20 kt with gusts to 30 kt, becoming N
10 to 15 kt with gusts to 25 kt late. Waves 2 to 4 ft,
occasionally to 5 ft. Wave Detail: NE 3 ft at 4 seconds.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE
5 to 10 kt in the afternoon. Waves 2 to 4 ft, occasionally to
5 ft. Wave Detail: NE 3 ft at 4 seconds.
.FRI NIGHT...S winds 5 to 10 kt, becoming SW after midnight.
Waves 2 to 4 ft, occasionally to 5 ft.
.SAT...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Waves 2 to 4 ft, occasionally to 5 ft.
.SAT NIGHT...S winds 10 to 15 kt. Waves 2 to 3 ft.
.SUN...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Waves 2 to 3 ft. Wave Detail: SE
2 ft at 2 seconds.
.SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt,
diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft,
subsiding to 1 to 2 ft after midnight. Chance of showers.
.MON...SW winds 5 to 10 kt. Waves 1 to 2 ft. Chance of showers.
.MON NIGHT...W winds 5 to 10 kt. Waves 1 to 2 ft.
.TUE...W winds around 10 kt with gusts up to 20 kt. Waves around
2 ft.
.TUE NIGHT...W winds around 10 kt. Waves around 2 ft.

$$

ANZ340-221430-
Peconic and Gardiners Bays-
1002 PM EDT Thu Aug 21 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

.OVERNIGHT...NE winds 20 to 25 kt, becoming N 15 to 20 kt. Gusts
to 30 kt. Waves 2 to 4 ft.
.FRI...N winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Waves 2 to 4 ft.
.FRI NIGHT...SW winds around 5 kt. Waves 1 to 2 ft.
.SAT...SW winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...S winds 5 to 10 kt. Waves 1 ft or less.
.SUN...S winds 5 to 10 kt. Waves 1 ft or less.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft or less. Chance of
showers after midnight.
.MON...S winds 5 to 10 kt. Waves 1 ft or less. Chance of showers.
.MON NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft.
.TUE...W winds 5 to 10 kt. Waves 2 to 4 ft.
.TUE NIGHT...W winds 5 to 10 kt. Waves 2 to 4 ft.

$$

ANZ345-221430-
South Shore Bays from Jones Inlet through Shinnecock Bay-
1002 PM EDT Thu Aug 21 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY AFTERNOON...

.OVERNIGHT...NE winds 15 to 20 kt with gusts to 30 kt, becoming N
10 to 15 kt with gusts to 25 kt late. Waves around 2 ft.
.FRI...N winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon. Gusts up to 25 kt. Waves 1 ft or less.
.FRI NIGHT...SW winds 5 to 10 kt. Waves 1 ft or less.
.SAT...SW winds 5 to 10 kt. Waves 1 ft or less.
.SAT NIGHT...S winds around 10 kt. Waves 1 ft or less.
.SUN...S winds 10 to 15 kt. Waves 1 ft or less.
.SUN NIGHT...S winds 5 to 10 kt. Waves 1 ft or less. Chance of
showers after midnight.
.MON...SW winds 5 to 10 kt. Waves 1 ft or less. Chance of
showers.
.MON NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft.
.TUE...W winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to
4 ft.
.TUE NIGHT...W winds around 10 kt. Waves 2 to 4 ft.

$$