FZUS51 KBOX 200606
CWFBOX
Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
106 AM EST Sat Dec 20 2025
Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM
ANZ200-201900-
106 AM EST Sat Dec 20 2025
.Synopsis for Massachusetts and Rhode Island coastal waters...
A strong cold front will sweep across the waters this afternoon
with southerly Storm Force Winds shifting to westerly Gale Force
gusts tonight through early Saturday morning. High-pressure should
build over the waters Saturday afternoon before moving offshore,
then another cold front will move through on Sunday followed by Gale
Force winds into early Monday. High-pressure returns Monday, then a
frontal system moves into the waters Tuesday. Low-pressure develops
east of the waters Tuesday night, then high-pressure builds into the
region Wednesday.
$$
ANZ250-201900-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 30 to 35 kt with gusts up to 40 kt.
Seas 8 to 11 ft. Wave Detail: W 8 ft at 7 seconds and SE 7 ft at
11 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 7 to
10 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: W
8 ft at 7 seconds and SE 6 ft at 11 seconds, becoming W 5 ft at
7 seconds and SE 5 ft at 11 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S
5 ft at 6 seconds and SE 3 ft at 11 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: SW 5 ft at 6 seconds and SE 3 ft at
10 seconds.
.SUN NIGHT AND MON...NW winds 25 to 30 kt. Seas 5 to 7 ft. Wave
Detail: W 7 ft at 7 seconds and SE 3 ft at 11 seconds.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Wave Detail: NW 3 ft at 5 seconds and E 1 foot at
10 seconds. A chance of snow after midnight.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Rain with snow likely. Vsby 1 NM or less.
.TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. Rain likely.
.WED AND WED NIGHT...NW winds 20 to 25 kt, diminishing to 15 to
20 kt. Gusts up to 30 kt. Seas 3 to 5 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ251-201900-
Massachusetts Bay and Ipswich Bay-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt.
Seas 5 to 7 ft. Wave Detail: SW 5 ft at 6 seconds and SE 5 ft at
11 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft. Wave Detail: NW 5 ft at 5 seconds and SE 4 ft at
11 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: S
4 ft at 4 seconds and S 3 ft at 8 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: W 4 ft at 5 seconds and S 3 ft at 7 seconds.
.SUN NIGHT AND MON...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 2 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and SW 2 ft at
8 seconds.
.MON NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and E
1 foot at 10 seconds. A chance of snow after midnight.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Snow with rain likely. Vsby 1 NM or less.
.TUE NIGHT...W winds 20 to 25 kt. Seas around 3 ft. Rain likely.
.WED AND WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 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.
$$
ANZ231-201900-
Cape Cod Bay-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt.
Seas 4 to 6 ft. Wave Detail: W 5 ft at 5 seconds and SW 4 ft at
8 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to
5 ft. Wave Detail: NW 4 ft at 5 seconds and SW 4 ft at 8 seconds.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
2 to 4 ft. Wave Detail: S 4 ft at 9 seconds and SW 3 ft at
4 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 6 seconds and SE 2 ft at
10 seconds.
.SUN NIGHT AND MON...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft. Wave Detail: NW 5 ft at 6 seconds and SW 2 ft at
8 seconds.
.MON NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 6 seconds and E
1 foot at 10 seconds. A chance of snow after midnight.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Rain with snow likely. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 20 to 25 kt. Seas 3 to 4 ft. Rain likely.
.WED AND WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ254-201900-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt.
Seas 9 to 13 ft, except 13 to 17 ft S and E of Nantucket. Wave
Detail: S 10 ft at 11 seconds and W 7 ft at 6 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 40 kt, diminishing to
15 to 20 kt in the afternoon. Seas 8 to 11 ft, subsiding to 5 to
8 ft in the afternoon. Wave Detail: S 8 ft at 11 seconds and W
7 ft at 6 seconds, becoming SE 6 ft at 11 seconds and NW 5 ft at
6 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: S
6 ft at 9 seconds and SW 5 ft at 5 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: S 6 ft at 8 seconds and NW 4 ft at 5 seconds.
.SUN NIGHT AND MON...NW winds 25 to 30 kt. Seas 5 to 8 ft. Wave
Detail: NW 7 ft at 6 seconds and SW 4 ft at 8 seconds.
.MON NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Wave Detail: N 4 ft at 7 seconds and W 2 ft at
4 seconds.
.TUE...SW winds 20 to 25 kt. Seas 3 to 5 ft. Rain with a chance
of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 25 to 30 kt. Seas 4 to 6 ft. Rain likely.
.WED...NW winds 25 to 30 kt. Seas 4 to 6 ft.
.WED NIGHT...NW winds 15 to 20 kt. Seas 3 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.
$$
ANZ255-201900-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 30 to 40 kt. Seas 12 to 16 ft. Wave
Detail: W 13 ft at 9 seconds and S 12 ft at 11 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 40 kt, diminishing to
15 to 20 kt in the afternoon. Seas 9 to 13 ft, subsiding to 6 to
9 ft in the afternoon. Wave Detail: S 12 ft at 11 seconds and W
10 ft at 10 seconds, becoming SW 7 ft at 10 seconds and S 6 ft at
11 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 4 to 6 ft, building to
6 to 9 ft after midnight. Wave Detail: SW 5 ft at 5 seconds and
SW 5 ft at 10 seconds, becoming SW 9 ft at 6 seconds and SE 3 ft
at 10 seconds.
.SUN...W winds 25 to 30 kt with gusts up to 35 kt. Seas 7 to
10 ft. Wave Detail: SW 10 ft at 8 seconds and W 2 ft at
5 seconds.
.SUN NIGHT...NW winds 25 to 30 kt with gusts up to 35 kt. Seas
7 to 10 ft. Wave Detail: W 10 ft at 8 seconds and NW 8 ft at
5 seconds.
.MON...NW winds 25 to 30 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 6 to 9 ft, subsiding to 4 to 6 ft in the
afternoon. Wave Detail: NW 8 ft at 6 seconds and W 6 ft at
8 seconds, becoming NW 6 ft at 6 seconds and W 3 ft at 7 seconds.
.MON NIGHT...NW winds 15 to 20 kt. Seas 3 to 5 ft.
.TUE...SW winds 25 to 30 kt. Seas 4 to 6 ft. Rain. Vsby 1 to
3 NM.
.TUE NIGHT...W winds 25 to 35 kt. Seas 6 to 9 ft. Rain likely.
.WED...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to
7 ft.
.WED NIGHT...NW winds 15 to 20 kt. Seas 3 to 5 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ256-201900-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 30 to 40 kt with gusts up to 45 kt.
Seas 12 to 16 ft. Wave Detail: S 12 ft at 11 seconds and W 10 ft
at 9 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt in the afternoon. Seas 9 to 12 ft, subsiding to 6 to
9 ft in the afternoon. Wave Detail: S 11 ft at 11 seconds and SW
8 ft at 9 seconds, becoming S 7 ft at 10 seconds and SW 6 ft at
10 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. Seas 5 to 7 ft, building to 7 to 10 ft after
midnight. Wave Detail: SW 5 ft at 5 seconds and S 5 ft at
10 seconds, becoming S 10 ft at 9 seconds and SW 6 ft at
6 seconds.
.SUN...W winds 25 to 30 kt with gusts up to 35 kt. Seas 7 to
10 ft. Wave Detail: SW 10 ft at 8 seconds and W 3 ft at
5 seconds.
.SUN NIGHT...NW winds 25 to 30 kt with gusts up to 35 kt. Seas
6 to 9 ft. Wave Detail: SW 8 ft at 8 seconds and NW 6 ft at
5 seconds.
.MON...NW winds 25 to 30 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 5 to 7 ft. Wave Detail: NW 6 ft at 5 seconds and
SW 5 ft at 7 seconds.
.MON NIGHT...W winds 15 to 20 kt. Seas 2 to 4 ft.
.TUE...SW winds 25 to 30 kt. Seas 4 to 6 ft. Rain.
.TUE NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
5 to 8 ft. A chance of rain.
.WED...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to
6 ft.
.WED NIGHT...NW winds 15 to 20 kt. Seas 2 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.
$$
ANZ232-201900-
Nantucket Sound-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 35 kt with gusts up to 40 kt.
Seas 6 to 9 ft. Wave Detail: W 5 ft at 6 seconds and SW 5 ft at
9 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt in the afternoon. Seas 5 to 7 ft, subsiding to 3 to
5 ft in the afternoon. Wave Detail: W 5 ft at 6 seconds and SW
3 ft at 9 seconds, becoming NW 3 ft at 5 seconds and SW 2 ft at
9 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 2 to 4 ft, building to
4 to 6 ft after midnight. Wave Detail: SW 3 ft at 4 seconds and
SW 2 ft at 9 seconds, becoming SW 4 ft at 4 seconds and S 4 ft at
9 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: W 4 ft at 5 seconds and SW 4 ft at 8 seconds.
.SUN NIGHT...NW winds 25 to 30 kt. Seas 4 to 6 ft. Wave Detail:
NW 4 ft at 6 seconds and SW 2 ft at 8 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing
to 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: NW
4 ft at 6 seconds and SW 2 ft at 8 seconds.
.MON NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft.
.TUE...SW winds 20 to 25 kt. Seas 2 to 4 ft. Rain with a chance
of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. Rain likely.
.WED AND WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ233-201900-
Vineyard Sound-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt.
Seas 7 to 10 ft. Wave Detail: SW 9 ft at 11 seconds and SW 7 ft
at 9 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to
8 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: SW
8 ft at 11 seconds and SW 6 ft at 9 seconds, becoming S 5 ft at
11 seconds and SW 4 ft at 9 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 3 to 5 ft, building to
5 to 7 ft after midnight. Wave Detail: SW 4 ft at 5 seconds and
SW 4 ft at 9 seconds, becoming SW 7 ft at 8 seconds and SW 5 ft
at 5 seconds.
.SUN...SW winds 25 to 30 kt, becoming W 20 to 25 kt in the
afternoon. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 8 seconds and
W 2 ft at 5 seconds.
.SUN NIGHT...NW winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 8 seconds
and NW 4 ft at 5 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing
to around 15 kt with gusts up to 20 kt in the afternoon. Seas
3 to 5 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail:
NW 4 ft at 6 seconds and SW 4 ft at 7 seconds, becoming NW 3 ft
at 6 seconds and SW 2 ft at 7 seconds.
.MON NIGHT...W winds 10 to 15 kt. Seas around 2 ft. A chance of
snow after midnight.
.TUE...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft. Rain with a chance of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 25 to 30 kt. Seas 3 to 5 ft. Rain likely.
.WED...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft.
.WED NIGHT...NW winds 10 to 15 kt. Seas around 2 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.
$$
ANZ234-201900-
Buzzards Bay-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 35 kt.
Seas 5 to 7 ft. Wave Detail: S 7 ft at 11 seconds and SW 6 ft at
9 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft, subsiding to 2 to 4 ft in the afternoon. Wave Detail: SW
6 ft at 11 seconds and SW 5 ft at 9 seconds, becoming S 4 ft at
11 seconds and SW 3 ft at 9 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 2 to 4 ft, building to
4 to 6 ft after midnight. Wave Detail: SW 4 ft at 4 seconds and
SW 3 ft at 9 seconds, becoming SW 6 ft at 9 seconds and SW 4 ft
at 5 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at
10 seconds.
.SUN NIGHT AND MON...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 2 to 4 ft. Wave Detail: NW 4 ft at 6 seconds and SW 4 ft at
8 seconds.
.MON NIGHT...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
N 2 ft at 6 seconds and SW 1 foot at 6 seconds. A chance of snow
after midnight.
.TUE...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft. Rain with a chance of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 20 to 25 kt. Seas 3 to 4 ft. Rain likely.
.WED AND WED NIGHT...NW winds 20 to 25 kt, diminishing to 10 to
15 kt. Seas 2 to 3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ235-201900-
Rhode Island Sound-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 35 kt with gusts up to 40 kt.
Seas 9 to 13 ft. Wave Detail: S 12 ft at 11 seconds and SW 7 ft
at 8 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 7 to
10 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: S
10 ft at 11 seconds and SW 6 ft at 9 seconds, becoming S 7 ft at
11 seconds and SW 4 ft at 9 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 4 to 6 ft, building to
5 to 8 ft after midnight. Wave Detail: SW 5 ft at 5 seconds and S
5 ft at 10 seconds, becoming S 8 ft at 9 seconds and SW 6 ft at
5 seconds.
.SUN...SW winds 25 to 30 kt, becoming W 20 to 25 kt in the
afternoon. Seas 5 to 8 ft. Wave Detail: SW 8 ft at 7 seconds and
SE 2 ft at 10 seconds.
.SUN NIGHT...NW winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. Seas 5 to 7 ft. Wave Detail: SW 6 ft at 8 seconds
and NW 4 ft at 5 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing
to around 15 kt with gusts up to 20 kt in the afternoon. Seas
3 to 5 ft. Wave Detail: NW 4 ft at 5 seconds and SW 4 ft at
7 seconds.
.MON NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
snow after midnight.
.TUE...SW winds 25 to 30 kt. Seas 3 to 5 ft. Rain with a chance
of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 25 to 30 kt. Seas 4 to 6 ft. A chance of
rain.
.WED...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft.
.WED NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 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.
$$
ANZ237-201900-
Block Island Sound-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt.
Seas 8 to 11 ft. Wave Detail: S 9 ft at 11 seconds and W 7 ft at
6 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to
9 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: S
8 ft at 11 seconds and W 4 ft at 6 seconds, becoming S 5 ft at
11 seconds and W 3 ft at 5 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 3 to 5 ft, building to
5 to 7 ft after midnight. Wave Detail: SW 4 ft at 4 seconds and S
4 ft at 10 seconds, becoming S 6 ft at 9 seconds and SW 5 ft at
5 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: S 6 ft at 8 seconds and W 4 ft at 5 seconds.
.SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Wave Detail: W 4 ft at 5 seconds and S 4 ft at
8 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing
to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to
5 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: NW
4 ft at 5 seconds and SW 2 ft at 7 seconds, becoming NW 2 ft at
5 seconds and SW 1 foot at 7 seconds.
.MON NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
snow after midnight.
.TUE...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Rain with a chance of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. A chance of rain.
.WED...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft.
.WED NIGHT...NW winds 10 to 15 kt. Seas around 2 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ230-201900-
Boston Harbor-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 7 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt.
Waves around 2 ft.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Waves around
2 ft.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Waves
around 2 ft.
.SUN...SW winds 15 to 20 kt, becoming W 20 to 25 kt in the
afternoon. Gusts up to 30 kt. Waves around 2 ft.
.SUN NIGHT AND MON...NW winds 20 to 25 kt with gusts up to 30 kt.
Waves around 2 ft.
.MON NIGHT...W winds 10 to 15 kt. Waves around 2 ft in the
evening, then 1 foot or less. A chance of snow after midnight.
.TUE...SW winds 15 to 20 kt. Waves around 2 ft. Snow with rain
likely. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 20 to 25 kt. Waves around 2 ft. A chance of
rain.
.WED AND WED NIGHT...NW winds 20 to 25 kt, diminishing to 10 to
15 kt. Waves around 2 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.
$$
ANZ236-201900-
Narragansett Bay-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 5 AM EST EARLY THIS MORNING...
.REST OF TONIGHT...W winds 20 to 25 kt with gusts up to 35 kt.
Waves 5 to 7 ft.
.SAT...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to
around 10 kt in the afternoon. Waves 2 to 4 ft. At the bay
entrance, waves 5 to 7 ft, subsiding to 3 to 5 ft in the
afternoon.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Waves 3 to 5 ft.
.SUN...W winds 15 to 20 kt with gusts up to 30 kt. Waves 3 to
5 ft.
.SUN NIGHT AND MON...NW winds 15 to 20 kt with gusts up to 30 kt.
Waves 2 to 3 ft.
.MON NIGHT...W winds around 10 kt. Waves around 2 ft in the
evening, then 1 foot or less. A chance of snow after midnight.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to
3 ft. Rain and snow likely. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Waves
2 to 3 ft. A chance of rain.
.WED AND WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt. Waves 2 to 3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
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CWFBOX
Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
106 AM EST Sat Dec 20 2025
Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM
ANZ200-201900-
106 AM EST Sat Dec 20 2025
.Synopsis for Massachusetts and Rhode Island coastal waters...
A strong cold front will sweep across the waters this afternoon
with southerly Storm Force Winds shifting to westerly Gale Force
gusts tonight through early Saturday morning. High-pressure should
build over the waters Saturday afternoon before moving offshore,
then another cold front will move through on Sunday followed by Gale
Force winds into early Monday. High-pressure returns Monday, then a
frontal system moves into the waters Tuesday. Low-pressure develops
east of the waters Tuesday night, then high-pressure builds into the
region Wednesday.
$$
ANZ250-201900-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 30 to 35 kt with gusts up to 40 kt.
Seas 8 to 11 ft. Wave Detail: W 8 ft at 7 seconds and SE 7 ft at
11 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 7 to
10 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: W
8 ft at 7 seconds and SE 6 ft at 11 seconds, becoming W 5 ft at
7 seconds and SE 5 ft at 11 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S
5 ft at 6 seconds and SE 3 ft at 11 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: SW 5 ft at 6 seconds and SE 3 ft at
10 seconds.
.SUN NIGHT AND MON...NW winds 25 to 30 kt. Seas 5 to 7 ft. Wave
Detail: W 7 ft at 7 seconds and SE 3 ft at 11 seconds.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Wave Detail: NW 3 ft at 5 seconds and E 1 foot at
10 seconds. A chance of snow after midnight.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Rain with snow likely. Vsby 1 NM or less.
.TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. Rain likely.
.WED AND WED NIGHT...NW winds 20 to 25 kt, diminishing to 15 to
20 kt. Gusts up to 30 kt. Seas 3 to 5 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ251-201900-
Massachusetts Bay and Ipswich Bay-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt.
Seas 5 to 7 ft. Wave Detail: SW 5 ft at 6 seconds and SE 5 ft at
11 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft. Wave Detail: NW 5 ft at 5 seconds and SE 4 ft at
11 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: S
4 ft at 4 seconds and S 3 ft at 8 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: W 4 ft at 5 seconds and S 3 ft at 7 seconds.
.SUN NIGHT AND MON...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 2 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and SW 2 ft at
8 seconds.
.MON NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and E
1 foot at 10 seconds. A chance of snow after midnight.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
3 ft. Snow with rain likely. Vsby 1 NM or less.
.TUE NIGHT...W winds 20 to 25 kt. Seas around 3 ft. Rain likely.
.WED AND WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 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.
$$
ANZ231-201900-
Cape Cod Bay-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt.
Seas 4 to 6 ft. Wave Detail: W 5 ft at 5 seconds and SW 4 ft at
8 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to
5 ft. Wave Detail: NW 4 ft at 5 seconds and SW 4 ft at 8 seconds.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
2 to 4 ft. Wave Detail: S 4 ft at 9 seconds and SW 3 ft at
4 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: SW 3 ft at 6 seconds and SE 2 ft at
10 seconds.
.SUN NIGHT AND MON...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft. Wave Detail: NW 5 ft at 6 seconds and SW 2 ft at
8 seconds.
.MON NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 6 seconds and E
1 foot at 10 seconds. A chance of snow after midnight.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Rain with snow likely. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 20 to 25 kt. Seas 3 to 4 ft. Rain likely.
.WED AND WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ254-201900-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt.
Seas 9 to 13 ft, except 13 to 17 ft S and E of Nantucket. Wave
Detail: S 10 ft at 11 seconds and W 7 ft at 6 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 40 kt, diminishing to
15 to 20 kt in the afternoon. Seas 8 to 11 ft, subsiding to 5 to
8 ft in the afternoon. Wave Detail: S 8 ft at 11 seconds and W
7 ft at 6 seconds, becoming SE 6 ft at 11 seconds and NW 5 ft at
6 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: S
6 ft at 9 seconds and SW 5 ft at 5 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: S 6 ft at 8 seconds and NW 4 ft at 5 seconds.
.SUN NIGHT AND MON...NW winds 25 to 30 kt. Seas 5 to 8 ft. Wave
Detail: NW 7 ft at 6 seconds and SW 4 ft at 8 seconds.
.MON NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Wave Detail: N 4 ft at 7 seconds and W 2 ft at
4 seconds.
.TUE...SW winds 20 to 25 kt. Seas 3 to 5 ft. Rain with a chance
of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 25 to 30 kt. Seas 4 to 6 ft. Rain likely.
.WED...NW winds 25 to 30 kt. Seas 4 to 6 ft.
.WED NIGHT...NW winds 15 to 20 kt. Seas 3 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.
$$
ANZ255-201900-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 30 to 40 kt. Seas 12 to 16 ft. Wave
Detail: W 13 ft at 9 seconds and S 12 ft at 11 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 40 kt, diminishing to
15 to 20 kt in the afternoon. Seas 9 to 13 ft, subsiding to 6 to
9 ft in the afternoon. Wave Detail: S 12 ft at 11 seconds and W
10 ft at 10 seconds, becoming SW 7 ft at 10 seconds and S 6 ft at
11 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 4 to 6 ft, building to
6 to 9 ft after midnight. Wave Detail: SW 5 ft at 5 seconds and
SW 5 ft at 10 seconds, becoming SW 9 ft at 6 seconds and SE 3 ft
at 10 seconds.
.SUN...W winds 25 to 30 kt with gusts up to 35 kt. Seas 7 to
10 ft. Wave Detail: SW 10 ft at 8 seconds and W 2 ft at
5 seconds.
.SUN NIGHT...NW winds 25 to 30 kt with gusts up to 35 kt. Seas
7 to 10 ft. Wave Detail: W 10 ft at 8 seconds and NW 8 ft at
5 seconds.
.MON...NW winds 25 to 30 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 6 to 9 ft, subsiding to 4 to 6 ft in the
afternoon. Wave Detail: NW 8 ft at 6 seconds and W 6 ft at
8 seconds, becoming NW 6 ft at 6 seconds and W 3 ft at 7 seconds.
.MON NIGHT...NW winds 15 to 20 kt. Seas 3 to 5 ft.
.TUE...SW winds 25 to 30 kt. Seas 4 to 6 ft. Rain. Vsby 1 to
3 NM.
.TUE NIGHT...W winds 25 to 35 kt. Seas 6 to 9 ft. Rain likely.
.WED...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 5 to
7 ft.
.WED NIGHT...NW winds 15 to 20 kt. Seas 3 to 5 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ256-201900-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 30 to 40 kt with gusts up to 45 kt.
Seas 12 to 16 ft. Wave Detail: S 12 ft at 11 seconds and W 10 ft
at 9 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt in the afternoon. Seas 9 to 12 ft, subsiding to 6 to
9 ft in the afternoon. Wave Detail: S 11 ft at 11 seconds and SW
8 ft at 9 seconds, becoming S 7 ft at 10 seconds and SW 6 ft at
10 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. Seas 5 to 7 ft, building to 7 to 10 ft after
midnight. Wave Detail: SW 5 ft at 5 seconds and S 5 ft at
10 seconds, becoming S 10 ft at 9 seconds and SW 6 ft at
6 seconds.
.SUN...W winds 25 to 30 kt with gusts up to 35 kt. Seas 7 to
10 ft. Wave Detail: SW 10 ft at 8 seconds and W 3 ft at
5 seconds.
.SUN NIGHT...NW winds 25 to 30 kt with gusts up to 35 kt. Seas
6 to 9 ft. Wave Detail: SW 8 ft at 8 seconds and NW 6 ft at
5 seconds.
.MON...NW winds 25 to 30 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 5 to 7 ft. Wave Detail: NW 6 ft at 5 seconds and
SW 5 ft at 7 seconds.
.MON NIGHT...W winds 15 to 20 kt. Seas 2 to 4 ft.
.TUE...SW winds 25 to 30 kt. Seas 4 to 6 ft. Rain.
.TUE NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
5 to 8 ft. A chance of rain.
.WED...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to
6 ft.
.WED NIGHT...NW winds 15 to 20 kt. Seas 2 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.
$$
ANZ232-201900-
Nantucket Sound-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 35 kt with gusts up to 40 kt.
Seas 6 to 9 ft. Wave Detail: W 5 ft at 6 seconds and SW 5 ft at
9 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt in the afternoon. Seas 5 to 7 ft, subsiding to 3 to
5 ft in the afternoon. Wave Detail: W 5 ft at 6 seconds and SW
3 ft at 9 seconds, becoming NW 3 ft at 5 seconds and SW 2 ft at
9 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 2 to 4 ft, building to
4 to 6 ft after midnight. Wave Detail: SW 3 ft at 4 seconds and
SW 2 ft at 9 seconds, becoming SW 4 ft at 4 seconds and S 4 ft at
9 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: W 4 ft at 5 seconds and SW 4 ft at 8 seconds.
.SUN NIGHT...NW winds 25 to 30 kt. Seas 4 to 6 ft. Wave Detail:
NW 4 ft at 6 seconds and SW 2 ft at 8 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing
to 15 to 20 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: NW
4 ft at 6 seconds and SW 2 ft at 8 seconds.
.MON NIGHT...W winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft.
.TUE...SW winds 20 to 25 kt. Seas 2 to 4 ft. Rain with a chance
of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. Rain likely.
.WED AND WED NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ233-201900-
Vineyard Sound-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt.
Seas 7 to 10 ft. Wave Detail: SW 9 ft at 11 seconds and SW 7 ft
at 9 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to
8 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: SW
8 ft at 11 seconds and SW 6 ft at 9 seconds, becoming S 5 ft at
11 seconds and SW 4 ft at 9 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 3 to 5 ft, building to
5 to 7 ft after midnight. Wave Detail: SW 4 ft at 5 seconds and
SW 4 ft at 9 seconds, becoming SW 7 ft at 8 seconds and SW 5 ft
at 5 seconds.
.SUN...SW winds 25 to 30 kt, becoming W 20 to 25 kt in the
afternoon. Seas 5 to 7 ft. Wave Detail: SW 7 ft at 8 seconds and
W 2 ft at 5 seconds.
.SUN NIGHT...NW winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. Seas 4 to 6 ft. Wave Detail: SW 5 ft at 8 seconds
and NW 4 ft at 5 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing
to around 15 kt with gusts up to 20 kt in the afternoon. Seas
3 to 5 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail:
NW 4 ft at 6 seconds and SW 4 ft at 7 seconds, becoming NW 3 ft
at 6 seconds and SW 2 ft at 7 seconds.
.MON NIGHT...W winds 10 to 15 kt. Seas around 2 ft. A chance of
snow after midnight.
.TUE...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft. Rain with a chance of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 25 to 30 kt. Seas 3 to 5 ft. Rain likely.
.WED...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft.
.WED NIGHT...NW winds 10 to 15 kt. Seas around 2 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.
$$
ANZ234-201900-
Buzzards Bay-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 35 kt.
Seas 5 to 7 ft. Wave Detail: S 7 ft at 11 seconds and SW 6 ft at
9 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft, subsiding to 2 to 4 ft in the afternoon. Wave Detail: SW
6 ft at 11 seconds and SW 5 ft at 9 seconds, becoming S 4 ft at
11 seconds and SW 3 ft at 9 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 2 to 4 ft, building to
4 to 6 ft after midnight. Wave Detail: SW 4 ft at 4 seconds and
SW 3 ft at 9 seconds, becoming SW 6 ft at 9 seconds and SW 4 ft
at 5 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: SW 6 ft at 6 seconds and SE 2 ft at
10 seconds.
.SUN NIGHT AND MON...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 2 to 4 ft. Wave Detail: NW 4 ft at 6 seconds and SW 4 ft at
8 seconds.
.MON NIGHT...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail:
N 2 ft at 6 seconds and SW 1 foot at 6 seconds. A chance of snow
after midnight.
.TUE...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft. Rain with a chance of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 20 to 25 kt. Seas 3 to 4 ft. Rain likely.
.WED AND WED NIGHT...NW winds 20 to 25 kt, diminishing to 10 to
15 kt. Seas 2 to 3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ235-201900-
Rhode Island Sound-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 35 kt with gusts up to 40 kt.
Seas 9 to 13 ft. Wave Detail: S 12 ft at 11 seconds and SW 7 ft
at 8 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 7 to
10 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: S
10 ft at 11 seconds and SW 6 ft at 9 seconds, becoming S 7 ft at
11 seconds and SW 4 ft at 9 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 4 to 6 ft, building to
5 to 8 ft after midnight. Wave Detail: SW 5 ft at 5 seconds and S
5 ft at 10 seconds, becoming S 8 ft at 9 seconds and SW 6 ft at
5 seconds.
.SUN...SW winds 25 to 30 kt, becoming W 20 to 25 kt in the
afternoon. Seas 5 to 8 ft. Wave Detail: SW 8 ft at 7 seconds and
SE 2 ft at 10 seconds.
.SUN NIGHT...NW winds 25 to 30 kt, diminishing to 20 to 25 kt
after midnight. Seas 5 to 7 ft. Wave Detail: SW 6 ft at 8 seconds
and NW 4 ft at 5 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing
to around 15 kt with gusts up to 20 kt in the afternoon. Seas
3 to 5 ft. Wave Detail: NW 4 ft at 5 seconds and SW 4 ft at
7 seconds.
.MON NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
snow after midnight.
.TUE...SW winds 25 to 30 kt. Seas 3 to 5 ft. Rain with a chance
of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 25 to 30 kt. Seas 4 to 6 ft. A chance of
rain.
.WED...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft.
.WED NIGHT...NW winds 10 to 15 kt. Seas 2 to 3 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.
$$
ANZ237-201900-
Block Island Sound-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt.
Seas 8 to 11 ft. Wave Detail: S 9 ft at 11 seconds and W 7 ft at
6 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to
9 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: S
8 ft at 11 seconds and W 4 ft at 6 seconds, becoming S 5 ft at
11 seconds and W 3 ft at 5 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 3 to 5 ft, building to
5 to 7 ft after midnight. Wave Detail: SW 4 ft at 4 seconds and S
4 ft at 10 seconds, becoming S 6 ft at 9 seconds and SW 5 ft at
5 seconds.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: S 6 ft at 8 seconds and W 4 ft at 5 seconds.
.SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt. Seas
4 to 6 ft. Wave Detail: W 4 ft at 5 seconds and S 4 ft at
8 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt, diminishing
to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to
5 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: NW
4 ft at 5 seconds and SW 2 ft at 7 seconds, becoming NW 2 ft at
5 seconds and SW 1 foot at 7 seconds.
.MON NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
snow after midnight.
.TUE...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Rain with a chance of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft. A chance of rain.
.WED...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft.
.WED NIGHT...NW winds 10 to 15 kt. Seas around 2 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ230-201900-
Boston Harbor-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 7 AM EST THIS MORNING...
.REST OF TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt.
Waves around 2 ft.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Waves around
2 ft.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Waves
around 2 ft.
.SUN...SW winds 15 to 20 kt, becoming W 20 to 25 kt in the
afternoon. Gusts up to 30 kt. Waves around 2 ft.
.SUN NIGHT AND MON...NW winds 20 to 25 kt with gusts up to 30 kt.
Waves around 2 ft.
.MON NIGHT...W winds 10 to 15 kt. Waves around 2 ft in the
evening, then 1 foot or less. A chance of snow after midnight.
.TUE...SW winds 15 to 20 kt. Waves around 2 ft. Snow with rain
likely. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 20 to 25 kt. Waves around 2 ft. A chance of
rain.
.WED AND WED NIGHT...NW winds 20 to 25 kt, diminishing to 10 to
15 kt. Waves around 2 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.
$$
ANZ236-201900-
Narragansett Bay-
106 AM EST Sat Dec 20 2025
...GALE WARNING IN EFFECT UNTIL 5 AM EST EARLY THIS MORNING...
.REST OF TONIGHT...W winds 20 to 25 kt with gusts up to 35 kt.
Waves 5 to 7 ft.
.SAT...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to
around 10 kt in the afternoon. Waves 2 to 4 ft. At the bay
entrance, waves 5 to 7 ft, subsiding to 3 to 5 ft in the
afternoon.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Waves 3 to 5 ft.
.SUN...W winds 15 to 20 kt with gusts up to 30 kt. Waves 3 to
5 ft.
.SUN NIGHT AND MON...NW winds 15 to 20 kt with gusts up to 30 kt.
Waves 2 to 3 ft.
.MON NIGHT...W winds around 10 kt. Waves around 2 ft in the
evening, then 1 foot or less. A chance of snow after midnight.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to
3 ft. Rain and snow likely. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Waves
2 to 3 ft. A chance of rain.
.WED AND WED NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt. Waves 2 to 3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
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