FZUS51 KBOX 230005
CWFBOX
Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
705 PM EST Mon Dec 22 2025
Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM
ANZ200-231300-
705 PM EST Mon Dec 22 2025
.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres builds S of the waters tonight, then a warm front moves
into the southern waters Tue with showers. Low pres develops on the
front south of New Eng Tue night and moves offshore while deepening
into a Gale center well E of New Eng on Wed. A cold front will drop
S across New Eng Thu and set up south of the waters Thu night and
Fri. Low pres is expected to develop to the west on Fri and may
track along this front S of the waters Fri night into Sat.
$$
ANZ250-231300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and N 2 ft at
6 seconds.
.TUE...W winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and
N 1 foot at 5 seconds. A chance of snow in the morning, then rain
with snow likely in the afternoon. Patchy fog in the afternoon
with vsby 1 to 3 NM.
.TUE NIGHT...S winds 10 to 15 kt, becoming W 20 to 25 kt after
midnight. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE
2 ft at 5 seconds. Rain. Patchy fog in the evening. Vsby 1 to
3 NM.
.WED...NW winds 25 to 30 kt, becoming N 20 to 25 kt in the
afternoon. Seas 5 to 7 ft. Wave Detail: N 7 ft at 6 seconds and E
7 ft at 8 seconds. A chance of snow. A chance of rain in the
morning with vsby 1 to 3 NM.
.WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming
NW after midnight. Seas 5 to 7 ft. Wave Detail: E 7 ft at
9 seconds and N 4 ft at 6 seconds.
.THU AND THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft. Wave Detail: E 6 ft at 10 seconds and N 5 ft at
5 seconds.
.FRI...N winds 15 to 20 kt. Seas 4 to 5 ft.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 6 to 9 ft. Snow likely.
Vsby 1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 7 to 10 ft. A chance of snow.
.SAT NIGHT...E winds around 10 kt. Seas 4 to 6 ft. A chance of
rain and snow.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ251-231300-
Massachusetts Bay and Ipswich Bay-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N
2 ft at 5 seconds and E 1 foot at 10 seconds.
.TUE...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 3 seconds and NE 1 foot at
5 seconds. A chance of snow in the morning, then rain and snow in
the afternoon. Patchy fog in the afternoon with vsby 1 to 3 NM.
.TUE NIGHT...S winds 10 to 15 kt, becoming W 20 to 25 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 3 seconds and SE
2 ft at 3 seconds. Rain. A chance of snow after midnight. Patchy
fog in the evening. Vsby 1 to 3 NM.
.WED...NW winds 25 to 30 kt, becoming N 20 to 25 kt in the
afternoon. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 4 seconds and
NE 4 ft at 7 seconds. A chance of snow. A chance of rain in the
morning.
.WED NIGHT THROUGH THU NIGHT...NW winds 15 to 20 kt with gusts up
to 25 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 9 seconds and N
4 ft at 5 seconds.
.FRI...N winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: N 4 ft
at 6 seconds and E 3 ft at 11 seconds. A chance of snow.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. Snow likely. Vsby 1 NM or less.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
7 ft. A chance of snow.
.SAT NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. A chance of snow
and rain.
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.
$$
ANZ231-231300-
Cape Cod Bay-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N
3 ft at 6 seconds and E 1 foot at 10 seconds.
.TUE...W winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: N 1 foot at 6 seconds and E 1 foot at
10 seconds. A chance of rain and snow in the morning, then rain
with snow likely in the afternoon. Patchy fog in the afternoon
with vsby 1 to 3 NM.
.TUE NIGHT...S winds 10 to 15 kt, becoming W 20 to 25 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE
1 foot at 4 seconds. Rain likely. Patchy fog in the evening. Vsby
1 to 3 NM.
.WED...NW winds 25 to 30 kt, becoming N 20 to 25 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: N 5 ft at 6 seconds and E
3 ft at 9 seconds. A chance of rain. A chance of snow in the
morning.
.WED NIGHT AND THU...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: N 4 ft at 6 seconds and E 4 ft at
10 seconds.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 3 ft. Wave Detail: N 3 ft at 5 seconds and E 3 ft at
11 seconds.
.FRI...N winds 15 to 20 kt. Seas 2 to 3 ft. A chance of snow.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Snow likely. Vsby 1 NM or less.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of snow. Vsby 1 to 3 NM.
.SAT NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. A chance of
rain.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ254-231300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
705 PM EST Mon Dec 22 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST TUESDAY...
.TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 3 to 5 ft. Wave Detail: N 5 ft at 7 seconds and E 1 foot at
10 seconds.
.TUE...W winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 5 seconds and
NE 2 ft at 6 seconds. A chance of rain in the morning, then rain
in the afternoon. Patchy fog in the afternoon with vsby 1 to
3 NM.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
W 20 to 25 kt with gusts up to 30 kt after midnight. Seas 2 to
3 ft, building to 3 to 5 ft after midnight. Wave Detail: S 3 ft
at 4 seconds and NE 1 foot at 5 seconds, becoming W 5 ft at
4 seconds and E 1 foot at 5 seconds. Rain. Patchy fog in the
evening. Vsby 1 to 3 NM.
.WED...N winds 25 to 30 kt. Seas 5 to 7 ft, except 7 to 10 ft S
and E of Nantucket. Wave Detail: N 7 ft at 7 seconds and E 7 ft
at 9 seconds. A chance of rain. A chance of snow in the
afternoon. Vsby 1 to 3 NM in the morning.
.WED NIGHT AND THU...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 5 to 8 ft. Wave Detail: E 8 ft at 9 seconds and N 5 ft at
7 seconds.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Wave Detail: N 6 ft at 6 seconds and E 6 ft at
11 seconds.
.FRI...N winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
6 to 9 ft. Snow likely. Vsby 1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 7 to 10 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 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.
$$
ANZ255-231300-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
705 PM EST Mon Dec 22 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST TUESDAY...
.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: W 4 ft at 5 seconds and N 1 foot at 6 seconds.
.TUE...W winds 10 to 15 kt, becoming SW with gusts up to 20 kt in
the afternoon. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds
and NE 1 foot at 6 seconds. A chance of rain in the morning, then
rain in the afternoon. Patchy fog in the afternoon. Vsby 1 NM or
less.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt, becoming
W 25 to 30 kt with gusts up to 35 kt after midnight. Seas 3 to
4 ft, building to 4 to 6 ft after midnight. Wave Detail: SW 4 ft
at 6 seconds and NE 1 foot at 4 seconds, becoming W 6 ft at
7 seconds and NE 1 foot at 4 seconds. Rain likely, mainly in the
evening. Patchy fog in the evening. Vsby 1 to 3 NM.
.WED...NW winds 30 to 35 kt, becoming N 25 to 30 kt in the
afternoon. Seas 6 to 9 ft, subsiding to 5 to 7 ft in the
afternoon. Wave Detail: W 9 ft at 8 seconds and E 1 foot at
10 seconds, becoming N 7 ft at 7 seconds and E 1 foot at
10 seconds. A chance of rain.
.WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt, becoming
NW around 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: N
5 ft at 6 seconds and E 5 ft at 10 seconds.
.THU AND THU NIGHT...N winds 20 to 25 kt. Seas 5 to 7 ft. Wave
Detail: W 6 ft at 6 seconds and E 6 ft at 10 seconds.
.FRI...N winds 15 to 20 kt. Seas 4 to 6 ft. A chance of snow.
.FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
6 to 9 ft. Snow likely. Vsby 1 NM or less.
.SAT...NE winds 20 to 25 kt. Seas 5 to 8 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ256-231300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Seas 3 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE
2 ft at 9 seconds.
.TUE...W winds 10 to 15 kt, becoming SW in the afternoon. Gusts
up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds
and SE 1 foot at 10 seconds. Patchy fog. Rain. Vsby 1 NM or less.
.TUE NIGHT...SW winds 20 to 25 kt, becoming W 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 3 to 4 ft, building to
4 to 6 ft after midnight. Wave Detail: SW 4 ft at 6 seconds and
SE 1 foot at 10 seconds, becoming W 6 ft at 6 seconds and SE
1 foot at 10 seconds. Patchy fog in the evening. A chance of rain
in the evening with vsby 1 to 3 NM.
.WED...NW winds 25 to 35 kt. Seas 5 to 8 ft. Wave Detail: N 8 ft
at 6 seconds and SE 1 foot at 10 seconds.
.WED NIGHT...N winds 15 to 20 kt, becoming NW around 10 kt after
midnight. Seas 3 to 5 ft, subsiding to 2 to 3 ft after midnight.
Wave Detail: N 5 ft at 6 seconds and E 1 foot at 10 seconds,
becoming W 3 ft at 6 seconds and E 3 ft at 10 seconds.
.THU AND THU NIGHT...N winds 20 to 25 kt. Seas 4 to 6 ft. Wave
Detail: W 5 ft at 5 seconds and E 4 ft at 10 seconds.
.FRI...NE winds 15 to 20 kt. Seas 5 to 7 ft. A chance of snow.
.FRI NIGHT...E winds 20 to 25 kt. Seas 6 to 9 ft. Snow. Vsby 1 NM
or less.
.SAT...NE winds 20 to 25 kt. Seas 5 to 8 ft. A chance of rain and
snow. Vsby 1 to 3 NM.
.SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of rain.
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.
$$
ANZ232-231300-
Nantucket Sound-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and
N 1 foot at 6 seconds.
.TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds
and NE 1 foot at 6 seconds. A chance of rain in the morning, then
rain in the afternoon. Patchy fog in the afternoon with vsby 1 to
3 NM.
.TUE NIGHT...S winds 10 to 15 kt, becoming W 20 to 25 kt after
midnight. Seas 2 to 4 ft. Wave Detail: W 4 ft at 4 seconds and SE
1 foot at 4 seconds. Rain likely, mainly in the evening. Patchy
fog in the evening. Vsby 1 to 3 NM.
.WED...NW winds 25 to 30 kt, becoming N 20 to 25 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: NW 5 ft at 5 seconds and
NE 2 ft at 5 seconds. A chance of rain.
.WED NIGHT AND THU...W winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: N 3 ft at 5 seconds and E 3 ft at 10 seconds.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: N 4 ft at 5 seconds and E 3 ft at
11 seconds.
.FRI...N winds 15 to 20 kt. Seas 2 to 4 ft. A chance of snow.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 3 to 5 ft. Snow likely.
Vsby 1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 3 to 5 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ233-231300-
Vineyard Sound-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail: W
2 ft at 4 seconds and N 1 foot at 6 seconds.
.TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds
and NE 1 foot at 6 seconds. Patchy fog. A chance of rain in the
morning. Rain in the afternoon. Vsby 1 NM or less.
.TUE NIGHT...SW winds 10 to 15 kt, becoming W 20 to 25 kt after
midnight. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and
SE 1 foot at 3 seconds. A chance of rain. Patchy fog in the
evening. Vsby 1 to 3 NM.
.WED...NW winds 25 to 30 kt, becoming N 20 to 25 kt in the
afternoon. Seas 2 to 4 ft. Wave Detail: W 4 ft at 6 seconds and
NE 2 ft at 6 seconds. A chance of rain and snow in the morning.
.WED NIGHT AND THU...W winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: SW 3 ft at 5 seconds and NE 2 ft at 4 seconds.
.THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail:
NW 3 ft at 5 seconds and E 2 ft at 12 seconds.
.FRI...NE winds 15 to 20 kt. Seas 2 to 4 ft. A chance of snow.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 3 to 5 ft. Snow likely.
Vsby 1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 3 to 5 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
rain.
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.
$$
ANZ234-231300-
Buzzards Bay-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W
2 ft at 4 seconds and N 1 foot at 6 seconds.
.TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds
and NE 1 foot at 6 seconds. Patchy fog. A chance of rain in the
morning. Rain in the afternoon. Vsby 1 NM or less.
.TUE NIGHT...SW winds 10 to 15 kt, becoming W 20 to 25 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and SE
1 foot at 4 seconds. A chance of rain. Patchy fog in the evening.
Vsby 1 to 3 NM.
.WED...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
3 ft. Wave Detail: W 3 ft at 5 seconds and NE 2 ft at 6 seconds.
A chance of rain and snow in the morning.
.WED NIGHT AND THU...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and NE 2 ft at
4 seconds.
.THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: N
2 ft at 5 seconds and E 2 ft at 11 seconds.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of snow.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 2 to 4 ft. Snow likely.
Vsby 1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 2 to 4 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
rain.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ235-231300-
Rhode Island Sound-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W
3 ft at 5 seconds and N 1 foot at 5 seconds.
.TUE...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot
at 10 seconds. Patchy fog. Rain. Vsby 1 NM or less.
.TUE NIGHT...SW winds 15 to 20 kt, becoming W 20 to 25 kt with
gusts up to 30 kt after midnight. Seas 2 to 3 ft, building to
3 to 5 ft after midnight. Wave Detail: SW 3 ft at 6 seconds and
SE 1 foot at 10 seconds, becoming W 5 ft at 6 seconds and SE
1 foot at 10 seconds. A chance of rain. Patchy fog in the
evening. Vsby 1 to 3 NM.
.WED...NW winds 25 to 30 kt, becoming N 20 to 25 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: W 5 ft at 7 seconds and N
2 ft at 6 seconds.
.WED NIGHT AND THU...W winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: SW 4 ft at 5 seconds and N 2 ft at 4 seconds.
.THU NIGHT...N winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: NW
4 ft at 6 seconds and E 2 ft at 12 seconds.
.FRI...NE winds 15 to 20 kt. Seas 3 to 5 ft. A chance of snow.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft. Snow likely.
Vsby 1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 4 to 6 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. A chance of
rain.
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.
$$
ANZ237-231300-
Block Island Sound-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W
2 ft at 4 seconds and N 1 foot at 3 seconds.
.TUE...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot
at 9 seconds. Patchy fog. Rain. A chance of snow in the morning.
Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming W 20 to 25 kt with gusts up to 30 kt after midnight.
Seas 2 to 4 ft. Wave Detail: W 4 ft at 6 seconds and SE 1 foot at
10 seconds. Patchy fog in the evening. A chance of rain in the
evening with vsby 1 to 3 NM.
.WED...NW winds 20 to 25 kt, becoming N 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: NW
4 ft at 5 seconds and SE 1 foot at 10 seconds.
.WED NIGHT AND THU...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and E 3 ft at
10 seconds.
.THU NIGHT...N winds around 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: NW 3 ft at 5 seconds and E 3 ft at
11 seconds.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of snow.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft. Snow. Vsby
1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 4 to 6 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds around 10 kt. Seas 2 to 4 ft. A chance of
rain.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ230-231300-
Boston Harbor-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 5 to 10 kt. Waves 1 foot or less.
.TUE...SW winds 5 to 10 kt, becoming S in the afternoon. Waves
1 foot or less. A chance of snow in the morning, then snow and
rain in the afternoon. Patchy fog in the afternoon with vsby 1 to
3 NM.
.TUE NIGHT...S winds 5 to 10 kt, becoming W 15 to 20 kt with
gusts up to 25 kt after midnight. Waves 1 foot or less, then
around 2 ft after midnight. Rain likely in the evening, then a
chance of rain and snow after midnight. Vsby 1 to 3 NM.
.WED...NW winds 20 to 25 kt, becoming N 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Waves around 2 ft. A chance of snow
and rain in the morning.
.WED NIGHT THROUGH THU NIGHT...NW winds 15 to 20 kt. Waves around
2 ft.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft. A chance of snow.
.FRI NIGHT...NE winds 10 to 15 kt. Waves 2 to 3 ft. Snow likely.
Vsby 1 NM or less.
.SAT AND SAT NIGHT...NE winds 10 to 15 kt, becoming NW 5 to
10 kt. Waves 2 to 3 ft, then 1 foot or less. At the outer harbor
entrance, waves 2 to 4 ft. A chance of snow.
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.
$$
ANZ236-231300-
Narragansett Bay-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 5 to 10 kt. Waves around 2 ft.
.TUE...SW winds 5 to 10 kt. Waves around 2 ft. Patchy fog. Rain.
A chance of snow in the morning. Vsby 1 NM or less.
.TUE NIGHT...SW winds 10 to 15 kt, becoming W 15 to 20 kt with
gusts up to 25 kt after midnight. Waves 2 to 3 ft. A chance of
rain. Patchy fog in the evening. Vsby 1 to 3 NM.
.WED...NW winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to
3 ft.
.WED NIGHT AND THU...W winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft.
.FRI...NE winds 10 to 15 kt. Waves 2 to 3 ft. A chance of snow.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 3 ft. Snow likely. Vsby 1 NM or less.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of snow. Vsby 1 to 3 NM.
.SAT NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
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CWFBOX
Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
705 PM EST Mon Dec 22 2025
Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM
ANZ200-231300-
705 PM EST Mon Dec 22 2025
.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres builds S of the waters tonight, then a warm front moves
into the southern waters Tue with showers. Low pres develops on the
front south of New Eng Tue night and moves offshore while deepening
into a Gale center well E of New Eng on Wed. A cold front will drop
S across New Eng Thu and set up south of the waters Thu night and
Fri. Low pres is expected to develop to the west on Fri and may
track along this front S of the waters Fri night into Sat.
$$
ANZ250-231300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and N 2 ft at
6 seconds.
.TUE...W winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and
N 1 foot at 5 seconds. A chance of snow in the morning, then rain
with snow likely in the afternoon. Patchy fog in the afternoon
with vsby 1 to 3 NM.
.TUE NIGHT...S winds 10 to 15 kt, becoming W 20 to 25 kt after
midnight. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE
2 ft at 5 seconds. Rain. Patchy fog in the evening. Vsby 1 to
3 NM.
.WED...NW winds 25 to 30 kt, becoming N 20 to 25 kt in the
afternoon. Seas 5 to 7 ft. Wave Detail: N 7 ft at 6 seconds and E
7 ft at 8 seconds. A chance of snow. A chance of rain in the
morning with vsby 1 to 3 NM.
.WED NIGHT...N winds 10 to 15 kt with gusts up to 20 kt, becoming
NW after midnight. Seas 5 to 7 ft. Wave Detail: E 7 ft at
9 seconds and N 4 ft at 6 seconds.
.THU AND THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft. Wave Detail: E 6 ft at 10 seconds and N 5 ft at
5 seconds.
.FRI...N winds 15 to 20 kt. Seas 4 to 5 ft.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 6 to 9 ft. Snow likely.
Vsby 1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 7 to 10 ft. A chance of snow.
.SAT NIGHT...E winds around 10 kt. Seas 4 to 6 ft. A chance of
rain and snow.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ251-231300-
Massachusetts Bay and Ipswich Bay-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N
2 ft at 5 seconds and E 1 foot at 10 seconds.
.TUE...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: S 2 ft at 3 seconds and NE 1 foot at
5 seconds. A chance of snow in the morning, then rain and snow in
the afternoon. Patchy fog in the afternoon with vsby 1 to 3 NM.
.TUE NIGHT...S winds 10 to 15 kt, becoming W 20 to 25 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 3 seconds and SE
2 ft at 3 seconds. Rain. A chance of snow after midnight. Patchy
fog in the evening. Vsby 1 to 3 NM.
.WED...NW winds 25 to 30 kt, becoming N 20 to 25 kt in the
afternoon. Seas 3 to 4 ft. Wave Detail: NW 4 ft at 4 seconds and
NE 4 ft at 7 seconds. A chance of snow. A chance of rain in the
morning.
.WED NIGHT THROUGH THU NIGHT...NW winds 15 to 20 kt with gusts up
to 25 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 9 seconds and N
4 ft at 5 seconds.
.FRI...N winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: N 4 ft
at 6 seconds and E 3 ft at 11 seconds. A chance of snow.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. Snow likely. Vsby 1 NM or less.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
7 ft. A chance of snow.
.SAT NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. A chance of snow
and rain.
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.
$$
ANZ231-231300-
Cape Cod Bay-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N
3 ft at 6 seconds and E 1 foot at 10 seconds.
.TUE...W winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: N 1 foot at 6 seconds and E 1 foot at
10 seconds. A chance of rain and snow in the morning, then rain
with snow likely in the afternoon. Patchy fog in the afternoon
with vsby 1 to 3 NM.
.TUE NIGHT...S winds 10 to 15 kt, becoming W 20 to 25 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and SE
1 foot at 4 seconds. Rain likely. Patchy fog in the evening. Vsby
1 to 3 NM.
.WED...NW winds 25 to 30 kt, becoming N 20 to 25 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: N 5 ft at 6 seconds and E
3 ft at 9 seconds. A chance of rain. A chance of snow in the
morning.
.WED NIGHT AND THU...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 2 to 4 ft. Wave Detail: N 4 ft at 6 seconds and E 4 ft at
10 seconds.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
around 3 ft. Wave Detail: N 3 ft at 5 seconds and E 3 ft at
11 seconds.
.FRI...N winds 15 to 20 kt. Seas 2 to 3 ft. A chance of snow.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. Snow likely. Vsby 1 NM or less.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of snow. Vsby 1 to 3 NM.
.SAT NIGHT...E winds 5 to 10 kt. Seas 3 to 5 ft. A chance of
rain.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ254-231300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
705 PM EST Mon Dec 22 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST TUESDAY...
.TONIGHT...W winds 10 to 15 kt. Gusts up to 20 kt this evening.
Seas 3 to 5 ft. Wave Detail: N 5 ft at 7 seconds and E 1 foot at
10 seconds.
.TUE...W winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 5 seconds and
NE 2 ft at 6 seconds. A chance of rain in the morning, then rain
in the afternoon. Patchy fog in the afternoon with vsby 1 to
3 NM.
.TUE NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming
W 20 to 25 kt with gusts up to 30 kt after midnight. Seas 2 to
3 ft, building to 3 to 5 ft after midnight. Wave Detail: S 3 ft
at 4 seconds and NE 1 foot at 5 seconds, becoming W 5 ft at
4 seconds and E 1 foot at 5 seconds. Rain. Patchy fog in the
evening. Vsby 1 to 3 NM.
.WED...N winds 25 to 30 kt. Seas 5 to 7 ft, except 7 to 10 ft S
and E of Nantucket. Wave Detail: N 7 ft at 7 seconds and E 7 ft
at 9 seconds. A chance of rain. A chance of snow in the
afternoon. Vsby 1 to 3 NM in the morning.
.WED NIGHT AND THU...W winds 15 to 20 kt with gusts up to 25 kt.
Seas 5 to 8 ft. Wave Detail: E 8 ft at 9 seconds and N 5 ft at
7 seconds.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. Wave Detail: N 6 ft at 6 seconds and E 6 ft at
11 seconds.
.FRI...N winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
6 to 9 ft. Snow likely. Vsby 1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 7 to 10 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 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.
$$
ANZ255-231300-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
705 PM EST Mon Dec 22 2025
...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST TUESDAY...
.TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: W 4 ft at 5 seconds and N 1 foot at 6 seconds.
.TUE...W winds 10 to 15 kt, becoming SW with gusts up to 20 kt in
the afternoon. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds
and NE 1 foot at 6 seconds. A chance of rain in the morning, then
rain in the afternoon. Patchy fog in the afternoon. Vsby 1 NM or
less.
.TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt, becoming
W 25 to 30 kt with gusts up to 35 kt after midnight. Seas 3 to
4 ft, building to 4 to 6 ft after midnight. Wave Detail: SW 4 ft
at 6 seconds and NE 1 foot at 4 seconds, becoming W 6 ft at
7 seconds and NE 1 foot at 4 seconds. Rain likely, mainly in the
evening. Patchy fog in the evening. Vsby 1 to 3 NM.
.WED...NW winds 30 to 35 kt, becoming N 25 to 30 kt in the
afternoon. Seas 6 to 9 ft, subsiding to 5 to 7 ft in the
afternoon. Wave Detail: W 9 ft at 8 seconds and E 1 foot at
10 seconds, becoming N 7 ft at 7 seconds and E 1 foot at
10 seconds. A chance of rain.
.WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt, becoming
NW around 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: N
5 ft at 6 seconds and E 5 ft at 10 seconds.
.THU AND THU NIGHT...N winds 20 to 25 kt. Seas 5 to 7 ft. Wave
Detail: W 6 ft at 6 seconds and E 6 ft at 10 seconds.
.FRI...N winds 15 to 20 kt. Seas 4 to 6 ft. A chance of snow.
.FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
6 to 9 ft. Snow likely. Vsby 1 NM or less.
.SAT...NE winds 20 to 25 kt. Seas 5 to 8 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ256-231300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Seas 3 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE
2 ft at 9 seconds.
.TUE...W winds 10 to 15 kt, becoming SW in the afternoon. Gusts
up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds
and SE 1 foot at 10 seconds. Patchy fog. Rain. Vsby 1 NM or less.
.TUE NIGHT...SW winds 20 to 25 kt, becoming W 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 3 to 4 ft, building to
4 to 6 ft after midnight. Wave Detail: SW 4 ft at 6 seconds and
SE 1 foot at 10 seconds, becoming W 6 ft at 6 seconds and SE
1 foot at 10 seconds. Patchy fog in the evening. A chance of rain
in the evening with vsby 1 to 3 NM.
.WED...NW winds 25 to 35 kt. Seas 5 to 8 ft. Wave Detail: N 8 ft
at 6 seconds and SE 1 foot at 10 seconds.
.WED NIGHT...N winds 15 to 20 kt, becoming NW around 10 kt after
midnight. Seas 3 to 5 ft, subsiding to 2 to 3 ft after midnight.
Wave Detail: N 5 ft at 6 seconds and E 1 foot at 10 seconds,
becoming W 3 ft at 6 seconds and E 3 ft at 10 seconds.
.THU AND THU NIGHT...N winds 20 to 25 kt. Seas 4 to 6 ft. Wave
Detail: W 5 ft at 5 seconds and E 4 ft at 10 seconds.
.FRI...NE winds 15 to 20 kt. Seas 5 to 7 ft. A chance of snow.
.FRI NIGHT...E winds 20 to 25 kt. Seas 6 to 9 ft. Snow. Vsby 1 NM
or less.
.SAT...NE winds 20 to 25 kt. Seas 5 to 8 ft. A chance of rain and
snow. Vsby 1 to 3 NM.
.SAT NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft. A chance of rain.
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.
$$
ANZ232-231300-
Nantucket Sound-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and
N 1 foot at 6 seconds.
.TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds
and NE 1 foot at 6 seconds. A chance of rain in the morning, then
rain in the afternoon. Patchy fog in the afternoon with vsby 1 to
3 NM.
.TUE NIGHT...S winds 10 to 15 kt, becoming W 20 to 25 kt after
midnight. Seas 2 to 4 ft. Wave Detail: W 4 ft at 4 seconds and SE
1 foot at 4 seconds. Rain likely, mainly in the evening. Patchy
fog in the evening. Vsby 1 to 3 NM.
.WED...NW winds 25 to 30 kt, becoming N 20 to 25 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: NW 5 ft at 5 seconds and
NE 2 ft at 5 seconds. A chance of rain.
.WED NIGHT AND THU...W winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: N 3 ft at 5 seconds and E 3 ft at 10 seconds.
.THU NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Seas
2 to 4 ft. Wave Detail: N 4 ft at 5 seconds and E 3 ft at
11 seconds.
.FRI...N winds 15 to 20 kt. Seas 2 to 4 ft. A chance of snow.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 3 to 5 ft. Snow likely.
Vsby 1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 3 to 5 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ233-231300-
Vineyard Sound-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail: W
2 ft at 4 seconds and N 1 foot at 6 seconds.
.TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds
and NE 1 foot at 6 seconds. Patchy fog. A chance of rain in the
morning. Rain in the afternoon. Vsby 1 NM or less.
.TUE NIGHT...SW winds 10 to 15 kt, becoming W 20 to 25 kt after
midnight. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 6 seconds and
SE 1 foot at 3 seconds. A chance of rain. Patchy fog in the
evening. Vsby 1 to 3 NM.
.WED...NW winds 25 to 30 kt, becoming N 20 to 25 kt in the
afternoon. Seas 2 to 4 ft. Wave Detail: W 4 ft at 6 seconds and
NE 2 ft at 6 seconds. A chance of rain and snow in the morning.
.WED NIGHT AND THU...W winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: SW 3 ft at 5 seconds and NE 2 ft at 4 seconds.
.THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail:
NW 3 ft at 5 seconds and E 2 ft at 12 seconds.
.FRI...NE winds 15 to 20 kt. Seas 2 to 4 ft. A chance of snow.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 3 to 5 ft. Snow likely.
Vsby 1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 3 to 5 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
rain.
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.
$$
ANZ234-231300-
Buzzards Bay-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W
2 ft at 4 seconds and N 1 foot at 6 seconds.
.TUE...W winds 5 to 10 kt, becoming SW 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 5 seconds
and NE 1 foot at 6 seconds. Patchy fog. A chance of rain in the
morning. Rain in the afternoon. Vsby 1 NM or less.
.TUE NIGHT...SW winds 10 to 15 kt, becoming W 20 to 25 kt after
midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and SE
1 foot at 4 seconds. A chance of rain. Patchy fog in the evening.
Vsby 1 to 3 NM.
.WED...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
3 ft. Wave Detail: W 3 ft at 5 seconds and NE 2 ft at 6 seconds.
A chance of rain and snow in the morning.
.WED NIGHT AND THU...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and NE 2 ft at
4 seconds.
.THU NIGHT...NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: N
2 ft at 5 seconds and E 2 ft at 11 seconds.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. A chance of snow.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 2 to 4 ft. Snow likely.
Vsby 1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 2 to 4 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
rain.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ235-231300-
Rhode Island Sound-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W
3 ft at 5 seconds and N 1 foot at 5 seconds.
.TUE...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot
at 10 seconds. Patchy fog. Rain. Vsby 1 NM or less.
.TUE NIGHT...SW winds 15 to 20 kt, becoming W 20 to 25 kt with
gusts up to 30 kt after midnight. Seas 2 to 3 ft, building to
3 to 5 ft after midnight. Wave Detail: SW 3 ft at 6 seconds and
SE 1 foot at 10 seconds, becoming W 5 ft at 6 seconds and SE
1 foot at 10 seconds. A chance of rain. Patchy fog in the
evening. Vsby 1 to 3 NM.
.WED...NW winds 25 to 30 kt, becoming N 20 to 25 kt in the
afternoon. Seas 3 to 5 ft. Wave Detail: W 5 ft at 7 seconds and N
2 ft at 6 seconds.
.WED NIGHT AND THU...W winds 15 to 20 kt. Seas 2 to 4 ft. Wave
Detail: SW 4 ft at 5 seconds and N 2 ft at 4 seconds.
.THU NIGHT...N winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: NW
4 ft at 6 seconds and E 2 ft at 12 seconds.
.FRI...NE winds 15 to 20 kt. Seas 3 to 5 ft. A chance of snow.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft. Snow likely.
Vsby 1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 4 to 6 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. A chance of
rain.
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.
$$
ANZ237-231300-
Block Island Sound-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W
2 ft at 4 seconds and N 1 foot at 3 seconds.
.TUE...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot
at 9 seconds. Patchy fog. Rain. A chance of snow in the morning.
Vsby 1 NM or less, increasing to 1 to 3 NM in the afternoon.
.TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt,
becoming W 20 to 25 kt with gusts up to 30 kt after midnight.
Seas 2 to 4 ft. Wave Detail: W 4 ft at 6 seconds and SE 1 foot at
10 seconds. Patchy fog in the evening. A chance of rain in the
evening with vsby 1 to 3 NM.
.WED...NW winds 20 to 25 kt, becoming N 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: NW
4 ft at 5 seconds and SE 1 foot at 10 seconds.
.WED NIGHT AND THU...W winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and E 3 ft at
10 seconds.
.THU NIGHT...N winds around 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: NW 3 ft at 5 seconds and E 3 ft at
11 seconds.
.FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. A chance of snow.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft. Snow. Vsby
1 NM or less.
.SAT...NE winds 15 to 20 kt. Seas 4 to 6 ft. A chance of snow.
Vsby 1 to 3 NM.
.SAT NIGHT...E winds around 10 kt. Seas 2 to 4 ft. A chance of
rain.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ230-231300-
Boston Harbor-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 5 to 10 kt. Waves 1 foot or less.
.TUE...SW winds 5 to 10 kt, becoming S in the afternoon. Waves
1 foot or less. A chance of snow in the morning, then snow and
rain in the afternoon. Patchy fog in the afternoon with vsby 1 to
3 NM.
.TUE NIGHT...S winds 5 to 10 kt, becoming W 15 to 20 kt with
gusts up to 25 kt after midnight. Waves 1 foot or less, then
around 2 ft after midnight. Rain likely in the evening, then a
chance of rain and snow after midnight. Vsby 1 to 3 NM.
.WED...NW winds 20 to 25 kt, becoming N 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Waves around 2 ft. A chance of snow
and rain in the morning.
.WED NIGHT THROUGH THU NIGHT...NW winds 15 to 20 kt. Waves around
2 ft.
.FRI...N winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft. A chance of snow.
.FRI NIGHT...NE winds 10 to 15 kt. Waves 2 to 3 ft. Snow likely.
Vsby 1 NM or less.
.SAT AND SAT NIGHT...NE winds 10 to 15 kt, becoming NW 5 to
10 kt. Waves 2 to 3 ft, then 1 foot or less. At the outer harbor
entrance, waves 2 to 4 ft. A chance of snow.
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.
$$
ANZ236-231300-
Narragansett Bay-
705 PM EST Mon Dec 22 2025
.TONIGHT...W winds 5 to 10 kt. Waves around 2 ft.
.TUE...SW winds 5 to 10 kt. Waves around 2 ft. Patchy fog. Rain.
A chance of snow in the morning. Vsby 1 NM or less.
.TUE NIGHT...SW winds 10 to 15 kt, becoming W 15 to 20 kt with
gusts up to 25 kt after midnight. Waves 2 to 3 ft. A chance of
rain. Patchy fog in the evening. Vsby 1 to 3 NM.
.WED...NW winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to
3 ft.
.WED NIGHT AND THU...W winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft.
.THU NIGHT...NW winds 10 to 15 kt with gusts up to 20 kt. Waves
around 2 ft.
.FRI...NE winds 10 to 15 kt. Waves 2 to 3 ft. A chance of snow.
.FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 3 ft. Snow likely. Vsby 1 NM or less.
.SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to
3 ft. A chance of snow. Vsby 1 to 3 NM.
.SAT NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
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