FZUS51 KBOX 180004
CWFBOX
Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Wed Dec 17 2025
Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM
ANZ200-181300-
704 PM EST Wed Dec 17 2025
.Synopsis for Massachusetts and Rhode Island coastal waters...
A period of gale force SW gusts will develop ahead of a cold front
that moves past the waters overnight. High pres will then cross the
waters Thu. A strong cold front is expected to impact the waters Fri
afternoon and evening. It will be preceded by strong S gale force
gusts Fri, shifting to W gale force gusts Fri night. High pres
should build over the waters Sat afternoon before moving offshore,
then another cold front should move through on Sun.
$$
ANZ250-181300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
704 PM EST Wed Dec 17 2025
...GALE WARNING IN EFFECT UNTIL 1 AM EST THURSDAY...
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 20 to 25 kt, becoming NW 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft
at 5 seconds and SE 1 foot at 10 seconds.
.THU...SW winds 5 to 10 kt, becoming S 15 to 20 kt with gusts up
to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at
4 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. Gusts up to 35 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft
at 6 seconds and SE 1 foot at 10 seconds. Patchy fog after
midnight. A chance of rain after midnight with vsby 1 NM or less.
.FRI...S winds 25 to 35 kt with gusts up to 50 kt. Seas 7 to
10 ft. Wave Detail: SE 9 ft at 11 seconds and S 7 ft at
6 seconds. Rain. Vsby 1 NM or less, increasing to 1 to 3 NM in
the afternoon.
.FRI NIGHT...W winds around 30 kt with gusts up to 40 kt. Seas
7 to 10 ft. Wave Detail: W 9 ft at 6 seconds and SE 8 ft at
10 seconds. A chance of rain in the evening with vsby 1 to 3 NM.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
around 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to
9 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: W
8 ft at 6 seconds and SE 5 ft at 11 seconds, becoming W 5 ft at
6 seconds and SE 4 ft at 11 seconds.
.SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. A chance of rain.
.SUN NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
3 to 5 ft.
.MON...NW winds 25 to 30 kt. Seas 5 to 7 ft.
.MON NIGHT...NW winds 15 to 20 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.
$$
ANZ251-181300-
Massachusetts Bay and Ipswich Bay-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft
at 4 seconds and SE 1 foot at 10 seconds.
.THU...SW winds 5 to 10 kt, becoming S 15 to 20 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E
1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. Gusts up to 30 kt. Seas 2 to 3 ft, building to 3 to
5 ft after midnight. Wave Detail: SE 3 ft at 4 seconds and E
1 foot at 10 seconds, becoming SE 5 ft at 5 seconds and SE 1 foot
at 11 seconds. Patchy fog after midnight. A chance of rain after
midnight with vsby 1 NM or less.
.FRI...S winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to
7 ft. Wave Detail: SE 7 ft at 7 seconds. Rain. Vsby 1 NM or less,
increasing to 1 to 3 NM in the afternoon.
.FRI NIGHT...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 SE 5 ft at
10 seconds. A chance of rain in the evening.
.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 3 to
5 ft. Wave Detail: W 5 ft at 5 seconds and SE 3 ft at 11 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Seas 2 to 3 ft.
.SUN THROUGH MON...NW winds 25 to 30 kt. Seas 3 to 5 ft.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 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.
$$
ANZ231-181300-
Cape Cod Bay-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft
at 4 seconds and SE 1 foot at 10 seconds.
.THU...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft
at 3 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt with gusts up to 25 kt,
increasing to 20 to 25 kt with gusts up to 35 kt after midnight.
Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 1 foot at
7 seconds. Patchy fog after midnight. A chance of rain after
midnight with vsby 1 NM or less.
.FRI...S winds 25 to 30 kt with gusts up to 45 kt. Seas 4 to
6 ft. Wave Detail: SE 6 ft at 13 seconds and S 5 ft at 5 seconds.
Rain. Vsby 1 to 3 NM.
.FRI NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and S 4 ft at
10 seconds. A chance of rain in the evening with vsby 1 to 3 NM.
.SAT AND SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt.
Seas 2 to 4 ft. Wave Detail: NW 4 ft at 6 seconds and SE 3 ft at
11 seconds.
.SUN AND SUN NIGHT...W winds 20 to 25 kt, increasing to 25 to
30 kt. Seas 3 to 4 ft.
.MON...NW winds 25 to 30 kt. Seas 4 to 6 ft.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ254-181300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
704 PM EST Wed Dec 17 2025
...GALE WARNING IN EFFECT UNTIL 1 AM EST THURSDAY...
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 20 to 25 kt, becoming NW 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: W 6 ft
at 6 seconds and SE 2 ft at 10 seconds.
.THU...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 3 ft
at 7 seconds and SE 2 ft at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. Gusts up to 35 kt. Seas 3 to 5 ft, building to 5 to
7 ft after midnight. Wave Detail: S 4 ft at 5 seconds and SE
1 foot at 10 seconds, becoming S 6 ft at 6 seconds and SE 1 foot
at 11 seconds. Patchy fog after midnight. A chance of rain after
midnight with vsby 1 NM or less.
.FRI...S winds 25 to 30 kt with gusts up to 50 kt. Seas 7 to
10 ft, building to 9 to 12 ft in the afternoon. Wave Detail: S
10 ft at 7 seconds and SE 9 ft at 13 seconds, becoming S 12 ft at
9 seconds and S 6 ft at 6 seconds. Rain. Vsby 1 NM or less,
increasing to 1 to 3 NM in the afternoon.
.FRI NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas
8 to 11 ft. S and E of Nantucket, seas 12 to 16 ft, subsiding to
11 to 14 ft after midnight. Wave Detail: S 11 ft at 11 seconds
and W 8 ft at 6 seconds. A chance of rain in the evening with
vsby 1 to 3 NM.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to
9 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: NW
8 ft at 7 seconds and S 7 ft at 11 seconds, becoming W 5 ft at
7 seconds and S 5 ft at 10 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.
.SUN AND SUN NIGHT...SW winds 20 to 25 kt, becoming NW 25 to
30 kt. Seas 4 to 6 ft.
.MON...NW winds 25 to 30 kt. Seas 5 to 7 ft.
.MON NIGHT...NW winds 20 to 25 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.
$$
ANZ255-181300-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
704 PM EST Wed Dec 17 2025
...GALE WARNING IN EFFECT UNTIL 1 AM EST THURSDAY...
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt, becoming
NW 15 to 20 kt after midnight. Seas 6 to 9 ft, subsiding to 5 to
7 ft after midnight. Wave Detail: SW 9 ft at 8 seconds and SE
1 foot at 9 seconds, becoming SW 7 ft at 8 seconds and SE 1 foot
at 10 seconds.
.THU...E winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: SW 4 ft
at 7 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. Seas 4 to 6 ft, building to 6 to 9 ft after midnight.
Wave Detail: S 6 ft at 7 seconds and SE 1 foot at 10 seconds,
becoming S 9 ft at 7 seconds and SE 1 foot at 14 seconds. Patchy
fog after midnight. A chance of rain after midnight with vsby
1 to 3 NM.
.FRI...S winds 30 to 35 kt with gusts up to 45 kt. Seas 8 to
11 ft, building to 10 to 14 ft in the afternoon. Wave Detail: S
11 ft at 7 seconds and S 11 ft at 14 seconds, becoming S 14 ft at
10 seconds and SW 5 ft at 6 seconds. Rain. Vsby 1 NM or less,
increasing to 1 to 3 NM in the afternoon.
.FRI NIGHT...W winds 30 to 40 kt with gusts up to 45 kt. Seas
11 to 15 ft, subsiding to 9 to 13 ft after midnight. Wave Detail:
S 15 ft at 11 seconds and W 12 ft at 9 seconds, becoming W 13 ft
at 9 seconds and S 10 ft at 11 seconds. A chance of rain in the
evening with vsby 1 to 3 NM.
.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: W 11 ft at 9 seconds and S
6 ft at 10 seconds, becoming W 7 ft at 8 seconds and S 5 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.
.SUN AND SUN NIGHT...W winds 25 to 30 kt, becoming NW 30 to
40 kt. Seas 5 to 7 ft.
.MON...NW winds 25 to 35 kt. Seas 4 to 6 ft.
.MON NIGHT...NW winds 20 to 25 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.
$$
ANZ256-181300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
704 PM EST Wed Dec 17 2025
...GALE WARNING IN EFFECT UNTIL 1 AM EST THURSDAY...
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 25 to 30 kt, becoming NW 15 to 20 kt after
midnight. Seas 6 to 9 ft, subsiding to 5 to 7 ft after midnight.
Wave Detail: W 8 ft at 7 seconds and SE 1 foot at 10 seconds,
becoming SW 6 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU...SE winds 5 to 10 kt, becoming S 15 to 20 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and
SE 1 foot at 10 seconds.
.THU NIGHT...S winds 20 to 25 kt with gusts up to 30 kt,
increasing to 25 to 30 kt with gusts up to 40 kt after midnight.
Seas 4 to 6 ft, building to 6 to 9 ft after midnight. Wave
Detail: S 6 ft at 7 seconds and SE 1 foot at 10 seconds, becoming
S 9 ft at 7 seconds and SE 1 foot at 11 seconds. Rain likely
after midnight.
.FRI...S winds 30 to 35 kt, becoming SW in the afternoon. Gusts
up to 45 kt. Seas 9 to 12 ft, building to 11 to 15 ft in the
afternoon. Wave Detail: S 12 ft at 11 seconds and S 11 ft at
8 seconds, becoming S 15 ft at 10 seconds and SW 3 ft at
6 seconds. Rain. Vsby 1 NM or less, increasing to 1 to 3 NM in
the afternoon.
.FRI NIGHT...W winds 30 to 40 kt with gusts up to 45 kt. Seas
11 to 15 ft, subsiding to 9 to 13 ft after midnight. Wave Detail:
S 15 ft at 10 seconds and W 10 ft at 7 seconds, becoming W 11 ft
at 8 seconds and S 11 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 8 to 11 ft, subsiding to 5 to
7 ft in the afternoon. Wave Detail: NW 9 ft at 8 seconds and S
7 ft at 10 seconds, becoming W 5 ft at 7 seconds and S 5 ft at
10 seconds.
.SAT NIGHT...SW winds 25 to 30 kt with gusts up to 35 kt. Seas
5 to 7 ft.
.SUN AND SUN NIGHT...W winds 25 to 35 kt with gusts up to 40 kt.
Seas 5 to 7 ft.
.MON...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to
6 ft.
.MON NIGHT...NW winds 20 to 25 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.
$$
ANZ232-181300-
Nantucket Sound-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 20 to 25 kt, diminishing to 10 to 15 kt after
midnight. Seas 3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and SE
1 foot at 10 seconds.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt with gusts up to 25 kt,
increasing to 25 to 30 kt with gusts up to 35 kt after midnight.
Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave
Detail: S 4 ft at 4 seconds and SE 1 foot at 11 seconds, becoming
S 5 ft at 5 seconds and SE 1 foot at 14 seconds. Patchy fog. A
chance of rain after midnight. Vsby 1 to 3 NM.
.FRI...S winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to
8 ft. Wave Detail: SE 7 ft at 14 seconds and S 6 ft at 6 seconds.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM in the
afternoon.
.FRI NIGHT...W winds 30 to 35 kt, becoming 25 to 35 kt after
midnight. Seas 5 to 7 ft. Wave Detail: W 6 ft at 5 seconds and S
3 ft at 10 seconds. A chance of rain in the evening with vsby
1 to 3 NM.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
around 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft. Wave Detail: W 5 ft at 5 seconds and S 2 ft at 11 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. Seas 2 to 4 ft.
.SUN THROUGH MON NIGHT...NW winds 25 to 30 kt. Seas 2 to 4 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ233-181300-
Vineyard Sound-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt, becoming
NW 10 to 15 kt after midnight. Seas 4 to 6 ft. Wave Detail: SW
6 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S 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: S 4 ft at 6 seconds and SE
1 foot at 10 seconds, becoming S 5 ft at 5 seconds and SE 1 foot
at 13 seconds. Patchy fog after midnight. Rain likely after
midnight.
.FRI...S winds 30 to 35 kt, becoming SW 25 to 30 kt in the
afternoon. Gusts up to 45 kt. Seas 6 to 9 ft. Wave Detail: S 9 ft
at 13 seconds and S 7 ft at 6 seconds. Rain. Vsby 1 NM or less,
increasing to 1 to 3 NM in the afternoon.
.FRI NIGHT...W winds 25 to 35 kt with gusts up to 40 kt. Seas
6 to 9 ft. Wave Detail: S 9 ft at 10 seconds and W 6 ft at
8 seconds. A chance of rain in the evening.
.SAT...W winds 25 to 30 kt, diminishing to around 15 kt with
gusts up to 20 kt in the afternoon. Seas 5 to 7 ft, subsiding to
3 to 5 ft in the afternoon. Wave Detail: W 6 ft at 8 seconds and
S 5 ft at 10 seconds, becoming S 4 ft at 10 seconds and W 3 ft at
7 seconds.
.SAT NIGHT...SW winds 25 to 30 kt with gusts up to 35 kt. Seas
3 to 5 ft.
.SUN AND SUN NIGHT...W winds 25 to 30 kt with gusts up to 35 kt.
Seas 3 to 5 ft.
.MON AND MON NIGHT...NW winds 25 to 30 kt, diminishing to 15 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.
$$
ANZ234-181300-
Buzzards Bay-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt, becoming
NW 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave Detail: SW
5 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt with gusts up to 25 kt,
increasing to 25 to 30 kt with gusts up to 35 kt after midnight.
Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave
Detail: S 3 ft at 5 seconds and SE 1 foot at 10 seconds, becoming
S 5 ft at 5 seconds and SE 1 foot at 13 seconds. Patchy fog after
midnight. Rain likely after midnight.
.FRI...S winds 30 to 35 kt, becoming SW 25 to 30 kt in the
afternoon. Gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: SE
7 ft at 13 seconds and S 6 ft at 5 seconds. Rain. Vsby 1 NM or
less, increasing to 1 to 3 NM in the afternoon.
.FRI NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas
4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and S 6 ft at
10 seconds. A chance of rain in the evening.
.SAT AND SAT NIGHT...SW winds 25 to 30 kt. Seas 3 to 5 ft. Wave
Detail: SW 5 ft at 6 seconds and S 5 ft at 10 seconds.
.SUN AND SUN NIGHT...W winds 25 to 30 kt. Seas 3 to 5 ft.
.MON AND MON NIGHT...NW winds 20 to 25 kt, diminishing to 15 to
20 kt. Seas 2 to 3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ235-181300-
Rhode Island Sound-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt, becoming
NW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 5 to
7 ft. Wave Detail: SW 7 ft at 7 seconds and SE 1 foot at
10 seconds.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW
4 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt with gusts up to 30 kt,
increasing to 25 to 30 kt with gusts up to 40 kt after midnight.
Seas 3 to 5 ft, building to 5 to 8 ft after midnight. Wave
Detail: S 5 ft at 6 seconds and SE 1 foot at 10 seconds, becoming
S 8 ft at 7 seconds and SE 1 foot at 12 seconds. Rain likely
after midnight.
.FRI...S winds 30 to 35 kt, becoming SW in the afternoon. Gusts
up to 45 kt. Seas 9 to 12 ft. Wave Detail: S 12 ft at 9 seconds.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM in the
afternoon.
.FRI NIGHT...W winds 30 to 35 kt, becoming 25 to 35 kt after
midnight. Seas 9 to 12 ft, subsiding to 7 to 10 ft after
midnight. Wave Detail: S 12 ft at 10 seconds and W 6 ft at
6 seconds, becoming S 10 ft at 10 seconds and W 7 ft at
7 seconds. A chance of rain in the evening.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
around 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 10 seconds and W 6 ft at 7 seconds, becoming S 6 ft at
10 seconds and W 4 ft at 6 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. Seas 4 to 6 ft.
.SUN...W winds 25 to 30 kt. Seas 4 to 6 ft.
.SUN NIGHT AND MON...NW winds 25 to 30 kt, diminishing to 20 to
25 kt. Seas 3 to 5 ft.
.MON NIGHT...NW winds 15 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.
$$
ANZ237-181300-
Block Island Sound-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 15 to 20 kt with gusts up to 30 kt, becoming
NW 5 to 10 kt after midnight. Seas 4 to 6 ft. Wave Detail: W 5 ft
at 7 seconds and SE 1 foot at 10 seconds.
.THU...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft at
7 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt with gusts up to 25 kt,
increasing to 25 to 30 kt with gusts up to 40 kt after midnight.
Seas 3 to 5 ft, building to 5 to 7 ft after midnight. Wave
Detail: S 4 ft at 6 seconds and SE 1 foot at 10 seconds, becoming
S 7 ft at 6 seconds and SE 1 foot at 11 seconds. A chance of rain
in the evening, then rain likely after midnight.
.FRI...S winds around 30 kt, becoming SW in the afternoon. Gusts
up to 45 kt. Seas 8 to 11 ft. Wave Detail: S 11 ft at 10 seconds
and S 9 ft at 7 seconds. Rain. Vsby 1 NM or less, increasing to
1 to 3 NM in the afternoon.
.FRI NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas
8 to 11 ft, subsiding to 6 to 9 ft after midnight. Wave Detail: S
10 ft at 10 seconds and W 7 ft at 6 seconds, becoming S 8 ft at
10 seconds and W 7 ft at 6 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to
7 ft. Wave Detail: S 6 ft at 10 seconds and W 5 ft at 6 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. Seas 3 to 5 ft.
.SUN AND SUN NIGHT...W winds 20 to 25 kt, becoming NW 25 to
30 kt. Seas 3 to 5 ft.
.MON AND MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 15 to 20 kt. Seas 2 to 4 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ230-181300-
Boston Harbor-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Waves around 2 ft.
.THU...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Waves 1 foot or less, then around 2 ft
in the afternoon.
.THU NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. Gusts up to 30 kt. Waves around 2 ft. Patchy fog. Rain
likely after midnight with vsby 1 to 3 NM.
.FRI...S winds 25 to 30 kt, becoming SW 20 to 25 kt in the
afternoon. Gusts up to 40 kt. Waves around 2 ft. Rain. Vsby 1 to
3 NM.
.FRI NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Waves
around 2 ft. A chance of rain in the evening.
.SAT AND SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt.
Waves around 2 ft.
.SUN THROUGH MON NIGHT...NW winds 20 to 25 kt with gusts up to
30 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.
$$
ANZ236-181300-
Narragansett Bay-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH LATE
FRIDAY NIGHT...
.TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. Waves 2 to 4 ft.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Waves around 2 ft.
.THU NIGHT...S winds 15 to 20 kt with gusts up to 25 kt,
increasing to 25 to 30 kt with gusts up to 35 kt after midnight.
Waves 2 to 3 ft, building to 4 to 6 ft after midnight. A chance
of rain in the evening, then rain after midnight. Patchy fog
after midnight.
.FRI...S winds 25 to 30 kt, becoming SW in the afternoon. Gusts
up to 45 kt. Waves 5 to 7 ft. Rain. Vsby 1 NM or less, increasing
to 1 to 3 NM in the afternoon.
.FRI NIGHT...W winds 20 to 25 kt with gusts up to 35 kt. Waves
4 to 6 ft, subsiding to 3 ft after midnight. At the bay entrance,
waves 5 to 7 ft.
.SAT AND SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt.
Waves 2 to 4 ft.
.SUN THROUGH MON NIGHT...NW winds 20 to 25 kt with gusts up to
30 kt. Waves 2 to 4 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
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CWFBOX
Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
704 PM EST Wed Dec 17 2025
Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM
ANZ200-181300-
704 PM EST Wed Dec 17 2025
.Synopsis for Massachusetts and Rhode Island coastal waters...
A period of gale force SW gusts will develop ahead of a cold front
that moves past the waters overnight. High pres will then cross the
waters Thu. A strong cold front is expected to impact the waters Fri
afternoon and evening. It will be preceded by strong S gale force
gusts Fri, shifting to W gale force gusts Fri night. High pres
should build over the waters Sat afternoon before moving offshore,
then another cold front should move through on Sun.
$$
ANZ250-181300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
704 PM EST Wed Dec 17 2025
...GALE WARNING IN EFFECT UNTIL 1 AM EST THURSDAY...
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 20 to 25 kt, becoming NW 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft
at 5 seconds and SE 1 foot at 10 seconds.
.THU...SW winds 5 to 10 kt, becoming S 15 to 20 kt with gusts up
to 25 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at
4 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. Gusts up to 35 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft
at 6 seconds and SE 1 foot at 10 seconds. Patchy fog after
midnight. A chance of rain after midnight with vsby 1 NM or less.
.FRI...S winds 25 to 35 kt with gusts up to 50 kt. Seas 7 to
10 ft. Wave Detail: SE 9 ft at 11 seconds and S 7 ft at
6 seconds. Rain. Vsby 1 NM or less, increasing to 1 to 3 NM in
the afternoon.
.FRI NIGHT...W winds around 30 kt with gusts up to 40 kt. Seas
7 to 10 ft. Wave Detail: W 9 ft at 6 seconds and SE 8 ft at
10 seconds. A chance of rain in the evening with vsby 1 to 3 NM.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
around 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to
9 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: W
8 ft at 6 seconds and SE 5 ft at 11 seconds, becoming W 5 ft at
6 seconds and SE 4 ft at 11 seconds.
.SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt. Seas
3 to 5 ft.
.SUN...W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. A chance of rain.
.SUN NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
3 to 5 ft.
.MON...NW winds 25 to 30 kt. Seas 5 to 7 ft.
.MON NIGHT...NW winds 15 to 20 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.
$$
ANZ251-181300-
Massachusetts Bay and Ipswich Bay-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft
at 4 seconds and SE 1 foot at 10 seconds.
.THU...SW winds 5 to 10 kt, becoming S 15 to 20 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and E
1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. Gusts up to 30 kt. Seas 2 to 3 ft, building to 3 to
5 ft after midnight. Wave Detail: SE 3 ft at 4 seconds and E
1 foot at 10 seconds, becoming SE 5 ft at 5 seconds and SE 1 foot
at 11 seconds. Patchy fog after midnight. A chance of rain after
midnight with vsby 1 NM or less.
.FRI...S winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to
7 ft. Wave Detail: SE 7 ft at 7 seconds. Rain. Vsby 1 NM or less,
increasing to 1 to 3 NM in the afternoon.
.FRI NIGHT...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 SE 5 ft at
10 seconds. A chance of rain in the evening.
.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 3 to
5 ft. Wave Detail: W 5 ft at 5 seconds and SE 3 ft at 11 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Seas 2 to 3 ft.
.SUN THROUGH MON...NW winds 25 to 30 kt. Seas 3 to 5 ft.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 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.
$$
ANZ231-181300-
Cape Cod Bay-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 15 to 20 kt, becoming NW 10 to 15 kt after
midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft
at 4 seconds and SE 1 foot at 10 seconds.
.THU...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft
at 3 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt with gusts up to 25 kt,
increasing to 20 to 25 kt with gusts up to 35 kt after midnight.
Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 1 foot at
7 seconds. Patchy fog after midnight. A chance of rain after
midnight with vsby 1 NM or less.
.FRI...S winds 25 to 30 kt with gusts up to 45 kt. Seas 4 to
6 ft. Wave Detail: SE 6 ft at 13 seconds and S 5 ft at 5 seconds.
Rain. Vsby 1 to 3 NM.
.FRI NIGHT...W winds 25 to 30 kt with gusts up to 35 kt. Seas
3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and S 4 ft at
10 seconds. A chance of rain in the evening with vsby 1 to 3 NM.
.SAT AND SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt.
Seas 2 to 4 ft. Wave Detail: NW 4 ft at 6 seconds and SE 3 ft at
11 seconds.
.SUN AND SUN NIGHT...W winds 20 to 25 kt, increasing to 25 to
30 kt. Seas 3 to 4 ft.
.MON...NW winds 25 to 30 kt. Seas 4 to 6 ft.
.MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 4 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ254-181300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
704 PM EST Wed Dec 17 2025
...GALE WARNING IN EFFECT UNTIL 1 AM EST THURSDAY...
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 20 to 25 kt, becoming NW 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: W 6 ft
at 6 seconds and SE 2 ft at 10 seconds.
.THU...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 3 ft
at 7 seconds and SE 2 ft at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. Gusts up to 35 kt. Seas 3 to 5 ft, building to 5 to
7 ft after midnight. Wave Detail: S 4 ft at 5 seconds and SE
1 foot at 10 seconds, becoming S 6 ft at 6 seconds and SE 1 foot
at 11 seconds. Patchy fog after midnight. A chance of rain after
midnight with vsby 1 NM or less.
.FRI...S winds 25 to 30 kt with gusts up to 50 kt. Seas 7 to
10 ft, building to 9 to 12 ft in the afternoon. Wave Detail: S
10 ft at 7 seconds and SE 9 ft at 13 seconds, becoming S 12 ft at
9 seconds and S 6 ft at 6 seconds. Rain. Vsby 1 NM or less,
increasing to 1 to 3 NM in the afternoon.
.FRI NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas
8 to 11 ft. S and E of Nantucket, seas 12 to 16 ft, subsiding to
11 to 14 ft after midnight. Wave Detail: S 11 ft at 11 seconds
and W 8 ft at 6 seconds. A chance of rain in the evening with
vsby 1 to 3 NM.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to
9 ft, subsiding to 5 to 7 ft in the afternoon. Wave Detail: NW
8 ft at 7 seconds and S 7 ft at 11 seconds, becoming W 5 ft at
7 seconds and S 5 ft at 10 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.
.SUN AND SUN NIGHT...SW winds 20 to 25 kt, becoming NW 25 to
30 kt. Seas 4 to 6 ft.
.MON...NW winds 25 to 30 kt. Seas 5 to 7 ft.
.MON NIGHT...NW winds 20 to 25 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.
$$
ANZ255-181300-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
704 PM EST Wed Dec 17 2025
...GALE WARNING IN EFFECT UNTIL 1 AM EST THURSDAY...
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt, becoming
NW 15 to 20 kt after midnight. Seas 6 to 9 ft, subsiding to 5 to
7 ft after midnight. Wave Detail: SW 9 ft at 8 seconds and SE
1 foot at 9 seconds, becoming SW 7 ft at 8 seconds and SE 1 foot
at 10 seconds.
.THU...E winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: SW 4 ft
at 7 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 20 to 25 kt, increasing to 25 to 30 kt after
midnight. Seas 4 to 6 ft, building to 6 to 9 ft after midnight.
Wave Detail: S 6 ft at 7 seconds and SE 1 foot at 10 seconds,
becoming S 9 ft at 7 seconds and SE 1 foot at 14 seconds. Patchy
fog after midnight. A chance of rain after midnight with vsby
1 to 3 NM.
.FRI...S winds 30 to 35 kt with gusts up to 45 kt. Seas 8 to
11 ft, building to 10 to 14 ft in the afternoon. Wave Detail: S
11 ft at 7 seconds and S 11 ft at 14 seconds, becoming S 14 ft at
10 seconds and SW 5 ft at 6 seconds. Rain. Vsby 1 NM or less,
increasing to 1 to 3 NM in the afternoon.
.FRI NIGHT...W winds 30 to 40 kt with gusts up to 45 kt. Seas
11 to 15 ft, subsiding to 9 to 13 ft after midnight. Wave Detail:
S 15 ft at 11 seconds and W 12 ft at 9 seconds, becoming W 13 ft
at 9 seconds and S 10 ft at 11 seconds. A chance of rain in the
evening with vsby 1 to 3 NM.
.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: W 11 ft at 9 seconds and S
6 ft at 10 seconds, becoming W 7 ft at 8 seconds and S 5 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.
.SUN AND SUN NIGHT...W winds 25 to 30 kt, becoming NW 30 to
40 kt. Seas 5 to 7 ft.
.MON...NW winds 25 to 35 kt. Seas 4 to 6 ft.
.MON NIGHT...NW winds 20 to 25 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.
$$
ANZ256-181300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
704 PM EST Wed Dec 17 2025
...GALE WARNING IN EFFECT UNTIL 1 AM EST THURSDAY...
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 25 to 30 kt, becoming NW 15 to 20 kt after
midnight. Seas 6 to 9 ft, subsiding to 5 to 7 ft after midnight.
Wave Detail: W 8 ft at 7 seconds and SE 1 foot at 10 seconds,
becoming SW 6 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU...SE winds 5 to 10 kt, becoming S 15 to 20 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and
SE 1 foot at 10 seconds.
.THU NIGHT...S winds 20 to 25 kt with gusts up to 30 kt,
increasing to 25 to 30 kt with gusts up to 40 kt after midnight.
Seas 4 to 6 ft, building to 6 to 9 ft after midnight. Wave
Detail: S 6 ft at 7 seconds and SE 1 foot at 10 seconds, becoming
S 9 ft at 7 seconds and SE 1 foot at 11 seconds. Rain likely
after midnight.
.FRI...S winds 30 to 35 kt, becoming SW in the afternoon. Gusts
up to 45 kt. Seas 9 to 12 ft, building to 11 to 15 ft in the
afternoon. Wave Detail: S 12 ft at 11 seconds and S 11 ft at
8 seconds, becoming S 15 ft at 10 seconds and SW 3 ft at
6 seconds. Rain. Vsby 1 NM or less, increasing to 1 to 3 NM in
the afternoon.
.FRI NIGHT...W winds 30 to 40 kt with gusts up to 45 kt. Seas
11 to 15 ft, subsiding to 9 to 13 ft after midnight. Wave Detail:
S 15 ft at 10 seconds and W 10 ft at 7 seconds, becoming W 11 ft
at 8 seconds and S 11 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 8 to 11 ft, subsiding to 5 to
7 ft in the afternoon. Wave Detail: NW 9 ft at 8 seconds and S
7 ft at 10 seconds, becoming W 5 ft at 7 seconds and S 5 ft at
10 seconds.
.SAT NIGHT...SW winds 25 to 30 kt with gusts up to 35 kt. Seas
5 to 7 ft.
.SUN AND SUN NIGHT...W winds 25 to 35 kt with gusts up to 40 kt.
Seas 5 to 7 ft.
.MON...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to
6 ft.
.MON NIGHT...NW winds 20 to 25 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.
$$
ANZ232-181300-
Nantucket Sound-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 20 to 25 kt, diminishing to 10 to 15 kt after
midnight. Seas 3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and SE
1 foot at 10 seconds.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt with gusts up to 25 kt,
increasing to 25 to 30 kt with gusts up to 35 kt after midnight.
Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave
Detail: S 4 ft at 4 seconds and SE 1 foot at 11 seconds, becoming
S 5 ft at 5 seconds and SE 1 foot at 14 seconds. Patchy fog. A
chance of rain after midnight. Vsby 1 to 3 NM.
.FRI...S winds 25 to 30 kt with gusts up to 45 kt. Seas 5 to
8 ft. Wave Detail: SE 7 ft at 14 seconds and S 6 ft at 6 seconds.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM in the
afternoon.
.FRI NIGHT...W winds 30 to 35 kt, becoming 25 to 35 kt after
midnight. Seas 5 to 7 ft. Wave Detail: W 6 ft at 5 seconds and S
3 ft at 10 seconds. A chance of rain in the evening with vsby
1 to 3 NM.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
around 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft. Wave Detail: W 5 ft at 5 seconds and S 2 ft at 11 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. Seas 2 to 4 ft.
.SUN THROUGH MON NIGHT...NW winds 25 to 30 kt. Seas 2 to 4 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ233-181300-
Vineyard Sound-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt, becoming
NW 10 to 15 kt after midnight. Seas 4 to 6 ft. Wave Detail: SW
6 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW
3 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S 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: S 4 ft at 6 seconds and SE
1 foot at 10 seconds, becoming S 5 ft at 5 seconds and SE 1 foot
at 13 seconds. Patchy fog after midnight. Rain likely after
midnight.
.FRI...S winds 30 to 35 kt, becoming SW 25 to 30 kt in the
afternoon. Gusts up to 45 kt. Seas 6 to 9 ft. Wave Detail: S 9 ft
at 13 seconds and S 7 ft at 6 seconds. Rain. Vsby 1 NM or less,
increasing to 1 to 3 NM in the afternoon.
.FRI NIGHT...W winds 25 to 35 kt with gusts up to 40 kt. Seas
6 to 9 ft. Wave Detail: S 9 ft at 10 seconds and W 6 ft at
8 seconds. A chance of rain in the evening.
.SAT...W winds 25 to 30 kt, diminishing to around 15 kt with
gusts up to 20 kt in the afternoon. Seas 5 to 7 ft, subsiding to
3 to 5 ft in the afternoon. Wave Detail: W 6 ft at 8 seconds and
S 5 ft at 10 seconds, becoming S 4 ft at 10 seconds and W 3 ft at
7 seconds.
.SAT NIGHT...SW winds 25 to 30 kt with gusts up to 35 kt. Seas
3 to 5 ft.
.SUN AND SUN NIGHT...W winds 25 to 30 kt with gusts up to 35 kt.
Seas 3 to 5 ft.
.MON AND MON NIGHT...NW winds 25 to 30 kt, diminishing to 15 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.
$$
ANZ234-181300-
Buzzards Bay-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt, becoming
NW 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave Detail: SW
5 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SW
2 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt with gusts up to 25 kt,
increasing to 25 to 30 kt with gusts up to 35 kt after midnight.
Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave
Detail: S 3 ft at 5 seconds and SE 1 foot at 10 seconds, becoming
S 5 ft at 5 seconds and SE 1 foot at 13 seconds. Patchy fog after
midnight. Rain likely after midnight.
.FRI...S winds 30 to 35 kt, becoming SW 25 to 30 kt in the
afternoon. Gusts up to 45 kt. Seas 5 to 7 ft. Wave Detail: SE
7 ft at 13 seconds and S 6 ft at 5 seconds. Rain. Vsby 1 NM or
less, increasing to 1 to 3 NM in the afternoon.
.FRI NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas
4 to 6 ft. Wave Detail: SW 6 ft at 6 seconds and S 6 ft at
10 seconds. A chance of rain in the evening.
.SAT AND SAT NIGHT...SW winds 25 to 30 kt. Seas 3 to 5 ft. Wave
Detail: SW 5 ft at 6 seconds and S 5 ft at 10 seconds.
.SUN AND SUN NIGHT...W winds 25 to 30 kt. Seas 3 to 5 ft.
.MON AND MON NIGHT...NW winds 20 to 25 kt, diminishing to 15 to
20 kt. Seas 2 to 3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ235-181300-
Rhode Island Sound-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 20 to 25 kt with gusts up to 30 kt, becoming
NW 10 to 15 kt with gusts up to 20 kt after midnight. Seas 5 to
7 ft. Wave Detail: SW 7 ft at 7 seconds and SE 1 foot at
10 seconds.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW
4 ft at 7 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt with gusts up to 30 kt,
increasing to 25 to 30 kt with gusts up to 40 kt after midnight.
Seas 3 to 5 ft, building to 5 to 8 ft after midnight. Wave
Detail: S 5 ft at 6 seconds and SE 1 foot at 10 seconds, becoming
S 8 ft at 7 seconds and SE 1 foot at 12 seconds. Rain likely
after midnight.
.FRI...S winds 30 to 35 kt, becoming SW in the afternoon. Gusts
up to 45 kt. Seas 9 to 12 ft. Wave Detail: S 12 ft at 9 seconds.
Rain. Vsby 1 NM or less, increasing to 1 to 3 NM in the
afternoon.
.FRI NIGHT...W winds 30 to 35 kt, becoming 25 to 35 kt after
midnight. Seas 9 to 12 ft, subsiding to 7 to 10 ft after
midnight. Wave Detail: S 12 ft at 10 seconds and W 6 ft at
6 seconds, becoming S 10 ft at 10 seconds and W 7 ft at
7 seconds. A chance of rain in the evening.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
around 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 10 seconds and W 6 ft at 7 seconds, becoming S 6 ft at
10 seconds and W 4 ft at 6 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. Seas 4 to 6 ft.
.SUN...W winds 25 to 30 kt. Seas 4 to 6 ft.
.SUN NIGHT AND MON...NW winds 25 to 30 kt, diminishing to 20 to
25 kt. Seas 3 to 5 ft.
.MON NIGHT...NW winds 15 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.
$$
ANZ237-181300-
Block Island Sound-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 15 to 20 kt with gusts up to 30 kt, becoming
NW 5 to 10 kt after midnight. Seas 4 to 6 ft. Wave Detail: W 5 ft
at 7 seconds and SE 1 foot at 10 seconds.
.THU...SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft at
7 seconds and SE 1 foot at 10 seconds.
.THU NIGHT...S winds 15 to 20 kt with gusts up to 25 kt,
increasing to 25 to 30 kt with gusts up to 40 kt after midnight.
Seas 3 to 5 ft, building to 5 to 7 ft after midnight. Wave
Detail: S 4 ft at 6 seconds and SE 1 foot at 10 seconds, becoming
S 7 ft at 6 seconds and SE 1 foot at 11 seconds. A chance of rain
in the evening, then rain likely after midnight.
.FRI...S winds around 30 kt, becoming SW in the afternoon. Gusts
up to 45 kt. Seas 8 to 11 ft. Wave Detail: S 11 ft at 10 seconds
and S 9 ft at 7 seconds. Rain. Vsby 1 NM or less, increasing to
1 to 3 NM in the afternoon.
.FRI NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas
8 to 11 ft, subsiding to 6 to 9 ft after midnight. Wave Detail: S
10 ft at 10 seconds and W 7 ft at 6 seconds, becoming S 8 ft at
10 seconds and W 7 ft at 6 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to
7 ft. Wave Detail: S 6 ft at 10 seconds and W 5 ft at 6 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. Seas 3 to 5 ft.
.SUN AND SUN NIGHT...W winds 20 to 25 kt, becoming NW 25 to
30 kt. Seas 3 to 5 ft.
.MON AND MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 15 to 20 kt. Seas 2 to 4 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ230-181300-
Boston Harbor-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY
MORNING...
.TONIGHT...W winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Waves around 2 ft.
.THU...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up
to 20 kt in the afternoon. Waves 1 foot or less, then around 2 ft
in the afternoon.
.THU NIGHT...S winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. Gusts up to 30 kt. Waves around 2 ft. Patchy fog. Rain
likely after midnight with vsby 1 to 3 NM.
.FRI...S winds 25 to 30 kt, becoming SW 20 to 25 kt in the
afternoon. Gusts up to 40 kt. Waves around 2 ft. Rain. Vsby 1 to
3 NM.
.FRI NIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Waves
around 2 ft. A chance of rain in the evening.
.SAT AND SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt.
Waves around 2 ft.
.SUN THROUGH MON NIGHT...NW winds 20 to 25 kt with gusts up to
30 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.
$$
ANZ236-181300-
Narragansett Bay-
704 PM EST Wed Dec 17 2025
...GALE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH LATE
FRIDAY NIGHT...
.TONIGHT...W winds 15 to 20 kt with gusts up to 25 kt,
diminishing to 5 to 10 kt after midnight. Waves 2 to 4 ft.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Waves around 2 ft.
.THU NIGHT...S winds 15 to 20 kt with gusts up to 25 kt,
increasing to 25 to 30 kt with gusts up to 35 kt after midnight.
Waves 2 to 3 ft, building to 4 to 6 ft after midnight. A chance
of rain in the evening, then rain after midnight. Patchy fog
after midnight.
.FRI...S winds 25 to 30 kt, becoming SW in the afternoon. Gusts
up to 45 kt. Waves 5 to 7 ft. Rain. Vsby 1 NM or less, increasing
to 1 to 3 NM in the afternoon.
.FRI NIGHT...W winds 20 to 25 kt with gusts up to 35 kt. Waves
4 to 6 ft, subsiding to 3 ft after midnight. At the bay entrance,
waves 5 to 7 ft.
.SAT AND SAT NIGHT...SW winds 20 to 25 kt with gusts up to 30 kt.
Waves 2 to 4 ft.
.SUN THROUGH MON NIGHT...NW winds 20 to 25 kt with gusts up to
30 kt. Waves 2 to 4 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
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