343
FZUS51 KBOX 181403
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1003 AM EDT Fri Sep 18 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 60 NM

ANZ200-190300-
1003 AM EDT Fri Sep 18 2026

.Synopsis for Massachusetts and Rhode Island coastal waters...
A cold front will cross the waters tonight through early tomorrow
morning with a period of showers. High pressure builds back in from
the NNW Friday afternoon into Saturday. Then a developing low
pressure system brings the threat of widespread rain, especially the
southern waters on Sunday.

$$

ANZ250-190300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...NW winds 5 to 10 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at
8 seconds.
.TONIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft. Wave Detail: W 4 ft at 5 seconds and NE 4 ft at 6 seconds.
.SAT...N winds 15 to 20 kt with gusts up to 25 kt, becoming NE
10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: NE
4 ft at 6 seconds and W 2 ft at 5 seconds.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N
3 ft at 6 seconds.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 8 seconds and S 1 foot at 2 seconds. A chance of showers in
the afternoon.
.SUN NIGHT...SE winds 5 to 10 kt, becoming NE after midnight.
Seas around 2 ft. Wave Detail: E 2 ft at 6 seconds and S 1 foot
at 3 seconds. Patchy fog. Showers likely. Vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. A chance of showers.
.MON NIGHT AND TUE...NE winds 15 to 20 kt with gusts up to 30 kt.
Seas 2 to 4 ft.
.TUE NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas
4 to 5 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ251-190300-
Massachusetts Bay and Ipswich Bay-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...NW winds 5 to 10 kt. Gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: E 2 ft at 7 seconds and W 1 foot at
2 seconds.
.TONIGHT...N winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft
at 6 seconds and NE 3 ft at 7 seconds.
.SAT...N winds 10 to 15 kt with gusts up to 25 kt, becoming E
5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft
at 6 seconds and SW 2 ft at 6 seconds.
.SAT NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
N 2 ft at 6 seconds.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft
at 6 seconds and S 1 foot at 2 seconds. A chance of showers in
the afternoon.
.SUN NIGHT...SE winds 5 to 10 kt, becoming NE after midnight.
Seas around 2 ft. Wave Detail: E 2 ft at 6 seconds and SE 1 foot
at 3 seconds. Showers likely. Patchy fog after midnight.
.MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. A chance of showers.
.MON NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 3 ft.
.TUE...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
4 ft. A chance of showers.
.TUE NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 4 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ231-190300-
Cape Cod Bay-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...N winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: NW 1 foot at 2 seconds and E 1 foot at 7 seconds.
.TONIGHT...N winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: N 3 ft
at 5 seconds.
.SAT...NE winds 10 to 15 kt with gusts up to 25 kt, diminishing
to 5 to 10 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: N
3 ft at 5 seconds.
.SAT NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
N 2 ft at 6 seconds.
.SUN...SE winds 5 to 10 kt. Seas around 2 ft in the morning, then
1 foot or less. Wave Detail: NE 2 ft at 6 seconds and SE 1 foot
at 3 seconds, becoming SE 1 foot at 2 seconds and NE 1 foot at
5 seconds. A chance of showers in the afternoon.
.SUN NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: SE 1 foot at 2 seconds and NE 1 foot at 5 seconds. Patchy
fog. Showers. Vsby 1 to 3 NM.
.MON AND MON NIGHT...NE winds 10 to 15 kt, increasing to 15 to
20 kt. Gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers.
.TUE AND TUE NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ254-190300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 NM-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...N winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at
8 seconds.
.TONIGHT...N winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: N 4 ft
at 5 seconds and W 2 ft at 5 seconds.
.SAT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE
4 ft at 6 seconds and SW 1 foot at 5 seconds.
.SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: NE
4 ft at 7 seconds and NW 1 foot at 5 seconds.
.SUN...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft
at 7 seconds. A chance of showers in the afternoon.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 6 seconds and W 1 foot at 2 seconds. Showers likely.
Patchy fog after midnight with vsby 1 to 3 NM.
.MON...NE winds 15 to 20 kt. Seas 2 to 4 ft. A chance of showers.
.MON NIGHT AND TUE...NE winds 20 to 25 kt. Seas 3 to 5 ft. A
chance of showers.
.TUE NIGHT...NE winds 25 to 30 kt. Seas 5 to 7 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ255-190300-
Coastal Waters extending out to 25 NM South of Marthas Vineyard
and Nantucket-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...NW winds around 10 kt, becoming NE. Seas 2 to
3 ft. Wave Detail: SW 3 ft at 5 seconds and E 2 ft at 8 seconds.
.TONIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NE 4 ft
at 7 seconds and SW 2 ft at 5 seconds.
.SAT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: NE 4 ft at 5 seconds and SW 1 foot at
5 seconds.
.SAT NIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail:
NE 3 ft at 7 seconds and NW 1 foot at 5 seconds.
.SUN...SE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 6 seconds. A chance of showers in the afternoon.
.SUN NIGHT...E winds around 10 kt. Seas 2 to 4 ft. Wave Detail:
SE 2 ft at 5 seconds. Showers likely. Patchy fog after midnight
with vsby 1 to 3 NM.
.MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. A chance of showers.
.TUE...NE winds 25 to 30 kt. Seas 4 to 6 ft. A chance of showers.
.TUE NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas
5 to 7 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ256-190300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 NM South of Block Island-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SW 3 ft at 5 seconds and E 2 ft at 9 seconds.
.TONIGHT...E winds 10 to 15 kt, becoming NE 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NE 4 ft
at 8 seconds and SW 2 ft at 5 seconds.
.SAT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: NE 4 ft at 5 seconds and SW 1 foot at
5 seconds.
.SAT NIGHT...E winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 6 seconds and NW 1 foot at 4 seconds.
.SUN...SE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 6 seconds. A chance of showers in the afternoon.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft, building to
3 to 5 ft after midnight. Wave Detail: SE 3 ft at 5 seconds.
Showers. Patchy fog after midnight with vsby 1 to 3 NM.
.MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
5 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 25 to 30 kt. Seas 4 to 5 ft. A chance of
showers.
.TUE...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to
7 ft. A chance of showers.
.TUE NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas
6 to 9 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ232-190300-
Nantucket Sound-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...N winds 5 to 10 kt. Seas around 2 ft. Wave
Detail: W 2 ft at 4 seconds and E 1 foot at 7 seconds.
.TONIGHT...N winds 10 to 15 kt with gusts up to 30 kt. Seas 2 to
3 ft. Wave Detail: NE 3 ft at 4 seconds and SW 1 foot at
5 seconds.
.SAT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: NE 3 ft at 4 seconds and W 1 foot at
5 seconds.
.SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
NE 2 ft at 6 seconds and NW 1 foot at 5 seconds.
.SUN...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
1 foot at 3 seconds and E 1 foot at 6 seconds. A chance of
showers in the afternoon.
.SUN NIGHT...E winds around 10 kt. Seas around 2 ft. Wave Detail:
SE 1 foot at 4 seconds. Showers likely.
.MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Showers likely.
.MON NIGHT AND TUE...NE winds 20 to 25 kt with gusts up to 30 kt.
Seas 2 to 4 ft. A chance of showers.
.TUE NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas
3 to 5 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ233-190300-
Vineyard Sound-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...N winds around 5 kt. Seas around 2 ft. Wave
Detail: SW 2 ft at 5 seconds and SE 1 foot at 12 seconds.
.TONIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: NE 2 ft at 3 seconds and SW 2 ft at 5 seconds.
.SAT...NE winds 10 to 15 kt. Gusts up to 25 kt in the morning.
Seas 2 to 4 ft. Wave Detail: NE 2 ft at 4 seconds and SW 1 foot
at 5 seconds.
.SAT NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: NE 1 foot at 4 seconds and W 1 foot at 5 seconds.
.SUN...SE winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: SE 1 foot at 3 seconds and E
1 foot at 8 seconds, becoming SE 1 foot at 3 seconds and SE
1 foot at 7 seconds. A chance of showers in the afternoon.
.SUN NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 1 foot at 3 seconds and E 1 foot at 7 seconds. Showers, mainly
in the evening. Patchy fog after midnight with vsby 1 to 3 NM.
.MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 20 to 25 kt. Seas 2 to 4 ft. A chance of
showers.
.TUE AND TUE NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ234-190300-
Buzzards Bay-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...N winds around 5 kt. Seas around 2 ft. Wave
Detail: W 2 ft at 5 seconds and SE 1 foot at 9 seconds.
.TONIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: NE 2 ft at 3 seconds and SW 1 foot at
5 seconds.
.SAT...NE winds 10 to 15 kt. Gusts up to 25 kt in the morning.
Seas 2 to 4 ft. Wave Detail: NE 2 ft at 3 seconds and SW 1 foot
at 5 seconds.
.SAT NIGHT...E winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: NE 1 foot at 3 seconds and W 1 foot at 5 seconds.
.SUN...SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SE
1 foot at 2 seconds and E 1 foot at 8 seconds. A chance of
showers in the afternoon.
.SUN NIGHT...E winds 5 to 10 kt. Seas 1 foot or less, then around
2 ft after midnight. Wave Detail: SE 1 foot at 2 seconds and E
1 foot at 5 seconds, becoming SE 1 foot at 3 seconds. Showers.
Patchy fog after midnight with vsby 1 to 3 NM.
.MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. A chance of showers.
.TUE AND TUE NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ235-190300-
Rhode Island Sound-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...NW winds around 5 kt. Seas 2 to 3 ft. Wave
Detail: SW 2 ft at 5 seconds and SE 1 foot at 10 seconds.
.TONIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Wave Detail: N 3 ft at 5 seconds and SW 2 ft at 5 seconds.
.SAT...NE winds 10 to 15 kt. Gusts up to 25 kt in the morning.
Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and SW 1 foot
at 5 seconds.
.SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 6 seconds and SW 1 foot at 5 seconds.
.SUN...SE winds around 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 9 seconds and SE 1 foot at 5 seconds. A chance of showers
in the afternoon.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 5 seconds. Patchy fog. Showers. Vsby 1 to 3 NM.
.MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas
2 to 4 ft. A chance of showers.
.TUE...NE winds 25 to 30 kt. Seas 3 to 5 ft. A chance of showers.
.TUE NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas
4 to 6 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ237-190300-
Block Island Sound-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...N winds around 5 kt, becoming W. Seas around
2 ft. Wave Detail: W 2 ft at 5 seconds and SE 1 foot at
9 seconds.
.TONIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
4 ft. Wave Detail: NE 3 ft at 5 seconds and SW 2 ft at 5 seconds.
.SAT...NE winds 10 to 15 kt. Gusts up to 25 kt in the morning.
Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and S 1 foot at
5 seconds.
.SAT NIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 7 seconds and S 1 foot at 4 seconds.
.SUN...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 5 seconds. Showers likely in the afternoon.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: SE
2 ft at 5 seconds. Patchy fog. Showers. Vsby 1 to 3 NM.
.MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas
2 to 4 ft. A chance of showers.
.TUE...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 3 to
5 ft. A chance of showers.
.TUE NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas
4 to 6 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ230-190300-
Boston Harbor-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...NW winds 5 to 10 kt. Gusts up to 20 kt. Waves
around 2 ft.
.TONIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Waves
around 2 ft.
.SAT...N winds 10 to 15 kt with gusts up to 20 kt, becoming E
5 to 10 kt in the afternoon. Waves around 2 ft in the morning,
then 1 foot or less.
.SAT NIGHT...SE winds around 5 kt. Waves 1 foot or less.
.SUN...SE winds 5 to 10 kt. Waves 1 foot or less. Showers likely
in the afternoon.
.SUN NIGHT...SE winds 5 to 10 kt, becoming NE after midnight.
Waves 1 foot or less. Showers.
.MON THROUGH TUE NIGHT...NE winds 20 to 25 kt with gusts up to
30 kt. Waves 2 to 3 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ236-190300-
Narragansett Bay-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...N winds around 5 kt. Waves around 2 ft.
.TONIGHT...N winds 5 to 10 kt with gusts up to 25 kt. Waves 2 to
3 ft.
.SAT...NE winds around 10 kt with gusts up to 20 kt, becoming E
in the afternoon. Waves 2 to 3 ft in the morning, then 1 foot or
less.
.SAT NIGHT...SE winds 5 to 10 kt. Waves 1 foot or less.
.SUN...SE winds 5 to 10 kt. Waves 1 foot or less, then around
2 ft in the afternoon. Showers likely in the afternoon.
.SUN NIGHT...E winds 5 to 10 kt. Waves around 2 ft. Patchy fog.
Showers. Vsby 1 to 3 NM.
.MON...NE winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to
3 ft. A chance of showers.
.MON NIGHT THROUGH TUE NIGHT...NE winds 15 to 20 kt with gusts up
to 30 kt. Waves 2 to 3 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ280-190300-
Ocean Waters from the Merrimack River to Plymouth from 40 to
60 NM-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and E 2 ft at
8 seconds.
.TONIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft, building to 4 to 5 ft after midnight. Wave Detail: NW 4 ft
at 4 seconds and E 3 ft at 8 seconds, becoming N 5 ft at
6 seconds and SW 4 ft at 5 seconds.
.SAT...N winds 15 to 20 kt with gusts up to 25 kt, becoming NE
10 to 15 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: N 5 ft
at 6 seconds and SW 1 foot at 5 seconds.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: NE
3 ft at 6 seconds and W 1 foot at 5 seconds.
.SUN...S winds around 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 4 seconds and E 2 ft at 7 seconds. A chance of showers in
the afternoon.
.SUN NIGHT...SE winds 5 to 10 kt, becoming NE after midnight.
Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds and SE 2 ft
at 9 seconds. Showers likely.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. A chance of showers.
.MON NIGHT AND TUE...NE winds 15 to 20 kt with gusts up to 25 kt.
Seas 3 to 5 ft.
.TUE NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ281-190300-
Ocean Waters from Provincetown to Nantucket from 20 to 60 NM-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...NW winds 5 to 10 kt with gusts up to 20 kt.
Seas around 3 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at
8 seconds.
.TONIGHT...N winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: N 5 ft
at 6 seconds.
.SAT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: N 5 ft
at 7 seconds and SW 1 foot at 5 seconds.
.SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: NE
4 ft at 7 seconds and W 1 foot at 5 seconds.
.SUN...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft
at 6 seconds.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 7 seconds and SW 1 foot at 3 seconds. Showers likely.
Patchy fog after midnight.
.MON...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Showers likely.
.MON NIGHT AND TUE...NE winds 15 to 20 kt, increasing to 20 to
25 kt. Gusts up to 30 kt. Seas 4 to 6 ft. A chance of showers.
.TUE NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas
5 to 7 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ282-190300-
Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...W winds around 10 kt, becoming N with gusts up
to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E
2 ft at 8 seconds. A chance of showers.
.TONIGHT...NE winds 5 to 10 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft
at 9 seconds and SW 3 ft at 5 seconds.
.SAT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE
4 ft at 6 seconds and W 2 ft at 5 seconds.
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: NE
4 ft at 7 seconds and NW 1 foot at 5 seconds.
.SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft
at 7 seconds and SW 1 foot at 6 seconds.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft, building to 4 to
6 ft after midnight. Wave Detail: W 4 ft at 6 seconds and NE 3 ft
at 7 seconds, becoming NE 3 ft at 8 seconds and NW 1 foot at
5 seconds. A chance of showers in the evening, then showers
likely after midnight. Patchy fog after midnight with vsby 1 to
3 NM.
.MON...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft. Patchy fog. Showers likely. Vsby 1 to 3 NM.
.MON NIGHT AND TUE...NE winds 20 to 25 kt, increasing to 25 to
30 kt. Seas 4 to 6 ft. A chance of showers.
.TUE NIGHT...NE winds 25 to 30 kt with gusts up to 35 kt. Seas
6 to 8 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ283-190300-
Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM-
1003 AM EDT Fri Sep 18 2026

.THIS AFTERNOON...NW winds around 10 kt, becoming N. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 5 seconds and E 2 ft at 8 seconds.
.TONIGHT...NE winds 5 to 10 kt, increasing to 15 to 20 kt after
midnight. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft
at 9 seconds and SW 3 ft at 5 seconds.
.SAT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE
5 ft at 6 seconds and SW 1 foot at 5 seconds.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: NE
4 ft at 7 seconds and NW 1 foot at 4 seconds.
.SUN...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 7 seconds and S 1 foot at 4 seconds.
.SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: SE
4 ft at 7 seconds. A chance of showers in the evening, then
showers likely after midnight. Patchy fog after midnight with
vsby 1 to 3 NM.
.MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
6 ft. Patchy fog. A chance of showers. Vsby 1 to 3 NM.
.MON NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas
5 to 6 ft. A chance of showers.
.TUE...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to
7 ft. A chance of showers.
.TUE NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas
7 to 10 ft. A chance of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

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