FZUS51 KBOX 191508
CWFBOX
Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1007 AM EST Fri Dec 19 2025
Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM
ANZ200-200400-
1007 AM EST Fri Dec 19 2025
.Synopsis for Massachusetts and Rhode Island coastal waters...
A strong cold front will sweep across the waters this afternoon and
early evening. It will be preceded by southerly gale to storm force
wind gusts today with a period of brief heavy rains, then shifting
to W gale force gusts tonight. High pres should build over the
waters Sat afternoon before moving offshore, then another cold front
will move through on Sun followed by gale force winds into early
Mon. High pres returns Mon night, then a frontal system moves into
the waters Tue. Low pres develops E of the waters Tue night, then
high pres builds into the region Wed.
$$
ANZ250-200400-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 55 kt.
Seas 7 to 10 ft, building to 10 to 14 ft. Wave Detail: SE 9 ft at
6 seconds, becoming SE 12 ft at 8 seconds and SW 1 foot at
4 seconds. Rain. Vsby 1 NM or less, increasing to 1 to 3 NM.
.TONIGHT...W winds 25 to 30 kt, increasing to 30 to 35 kt after
midnight. Seas 8 to 11 ft. Wave Detail: SE 10 ft at 10 seconds
and SW 7 ft at 7 seconds. A chance of rain in the evening.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 6 to
9 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: W
7 ft at 7 seconds and SE 6 ft at 11 seconds, becoming W 5 ft at
7 seconds and SE 5 ft at 11 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail:
SW 6 ft at 5 seconds and SE 3 ft at 11 seconds.
.SUN AND SUN NIGHT...NW winds 25 to 30 kt. Seas 5 to 7 ft. Wave
Detail: NW 7 ft at 6 seconds and S 5 ft at 5 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: NW 7 ft at 6 seconds and SE 2 ft at
10 seconds.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Rain likely with a chance of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 20 to 25 kt. Seas 3 to 5 ft. A chance of
rain.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ251-200400-
Massachusetts Bay and Ipswich Bay-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 50 kt.
Seas 6 to 8 ft, building to 7 to 10 ft. Wave Detail: SE 8 ft at
6 seconds, becoming SE 9 ft at 8 seconds and E 2 ft at 5 seconds.
Rain. Vsby 1 to 3 NM.
.TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to
8 ft, subsiding to 5 to 6 ft after midnight. Wave Detail: SE 7 ft
at 10 seconds and W 5 ft at 4 seconds, becoming SW 5 ft at
6 seconds and SE 5 ft at 11 seconds. A chance of rain in the
evening.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: W
5 ft at 6 seconds and SE 3 ft at 11 seconds, becoming NW 3 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. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail:
SW 4 ft at 5 seconds and SE 3 ft at 11 seconds.
.SUN AND SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at
10 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: N 4 ft at 5 seconds and E 2 ft at 11 seconds.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.TUE...SW winds 15 to 20 kt. Seas 2 to 3 ft. Snow and rain
likely. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 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.
$$
ANZ231-200400-
Cape Cod Bay-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt. Gusts up to 45 kt,
increasing to 55 kt. Seas 5 to 7 ft, building to 6 to 9 ft. Wave
Detail: SE 5 ft at 5 seconds, becoming SE 9 ft at 9 seconds and
SE 6 ft at 6 seconds. Rain. Isolated tstms. Vsby 1 to 3 NM,
decreasing to 1 NM or less.
.TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas 6 to
7 ft. Wave Detail: SW 5 ft at 5 seconds and SE 5 ft at
10 seconds. A chance of rain in the evening.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft, subsiding to 2 to 4 ft in the afternoon. Wave Detail: W
5 ft at 6 seconds and S 3 ft at 11 seconds, becoming NW 3 ft at
5 seconds and SE 3 ft at 11 seconds.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at
10 seconds.
.SUN AND SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft. Wave Detail: N 5 ft at 5 seconds and S 3 ft at
6 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: NW 5 ft at 7 seconds and E 1 foot at
10 seconds.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Rain likely with a chance of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
around 3 ft. A chance of rain.
Winds and seas higher in and near tstms.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ254-200400-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 35 kt. Gusts up to 45 kt,
increasing to 55 kt. Seas 8 to 10 ft, building to 10 to 14 ft.
Wave Detail: S 9 ft at 7 seconds, becoming S 14 ft at 9 seconds.
Rain. Isolated tstms. Vsby 1 to 3 NM, decreasing to 1 NM or less.
.TONIGHT...W winds 25 to 35 kt with gusts up to 40 kt. Seas 9 to
13 ft, except 12 to 16 ft S and E of Nantucket. Wave Detail: S
13 ft at 11 seconds and W 7 ft at 7 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 40 kt, diminishing to
15 to 20 kt in the afternoon. Seas 7 to 10 ft, subsiding to 5 to
7 ft in the afternoon. S and E of Nantucket, seas 10 to 14 ft,
subsiding to 6 to 9 ft in the afternoon. Wave Detail: S 9 ft at
11 seconds and W 6 ft at 7 seconds, becoming S 6 ft at 11 seconds
and W 5 ft at 7 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail:
SW 6 ft at 6 seconds and SE 5 ft at 10 seconds.
.SUN AND SUN NIGHT...NW winds 25 to 30 kt. Seas 5 to 8 ft. Wave
Detail: NW 7 ft at 6 seconds and S 6 ft at 8 seconds.
.MON...NW winds 25 to 30 kt. Seas 5 to 8 ft. Wave Detail: W 7 ft
at 7 seconds and N 2 ft at 6 seconds.
.MON NIGHT...NW winds 15 to 20 kt. Seas 4 to 6 ft.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Rain likely.
.TUE NIGHT...W winds 20 to 25 kt. Seas 3 to 5 ft. A chance of
rain.
Winds and seas higher in and near tstms.
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.
$$
ANZ255-200400-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 50 kt.
Seas 9 to 12 ft, building to 11 to 15 ft. Wave Detail: S 12 ft at
7 seconds, becoming S 15 ft at 9 seconds and SW 1 foot at
4 seconds. Rain with a slight chance of tstms. Vsby 1 to 3 NM,
decreasing to 1 NM or less.
.TONIGHT...W winds 30 to 40 kt with gusts up to 45 kt. Seas 12 to
16 ft. Wave Detail: SW 16 ft at 11 seconds and W 12 ft at
9 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 40 kt, diminishing to
15 to 20 kt in the afternoon. Seas 9 to 12 ft, subsiding to 5 to
7 ft in the afternoon. Wave Detail: SW 12 ft at 11 seconds and W
9 ft at 9 seconds, becoming SW 7 ft at 10 seconds and W 5 ft at
9 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 5 to 7 ft. Wave Detail: SW
7 ft at 7 seconds and S 6 ft at 10 seconds.
.SUN...W winds 25 to 30 kt with gusts up to 35 kt. Seas 6 to
8 ft, building to 7 to 10 ft in the afternoon. Wave Detail: SW
8 ft at 8 seconds and W 2 ft at 4 seconds, becoming SW 9 ft at
8 seconds and W 2 ft at 5 seconds.
.SUN NIGHT...NW winds 25 to 30 kt with gusts up to 35 kt. Seas
7 to 10 ft, subsiding to 5 to 7 ft after midnight. Wave Detail: W
10 ft at 8 seconds and NW 4 ft at 5 seconds, becoming W 7 ft at
7 seconds and SE 2 ft at 11 seconds.
.MON...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to
6 ft.
.MON NIGHT...NW winds 15 to 20 kt. Seas 3 to 5 ft.
.TUE...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Rain likely.
.TUE NIGHT...W winds 25 to 30 kt. Seas 4 to 6 ft. A chance of
rain.
Winds and seas higher in and near tstms.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ256-200400-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1007 AM EST Fri Dec 19 2025
...GALE WARNING IN EFFECT THROUGH SATURDAY MORNING...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 50 kt.
Seas 11 to 13 ft, building to 12 to 15 ft. Wave Detail: S 12 ft
at 8 seconds, becoming S 15 ft at 9 seconds and W 1 foot at
4 seconds. Rain with isolated tstms. Vsby 1 NM or less.
.TONIGHT...W winds 30 to 40 kt with gusts up to 45 kt. Seas 13 to
15 ft, subsiding to 11 to 15 ft after midnight. Wave Detail: S
15 ft at 11 seconds and W 6 ft at 7 seconds, becoming S 14 ft at
11 seconds and W 9 ft at 9 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt in the afternoon. Seas 8 to 11 ft, subsiding to 5 to
7 ft in the afternoon. Wave Detail: SW 11 ft at 11 seconds and W
6 ft at 9 seconds, becoming S 7 ft at 10 seconds and NW 2 ft at
5 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. Seas 4 to 6 ft, building to 6 to 7 ft after
midnight. Wave Detail: SW 6 ft at 10 seconds and W 2 ft at
4 seconds, becoming SW 7 ft at 7 seconds and SE 4 ft at
10 seconds.
.SUN...W winds 25 to 30 kt with gusts up to 35 kt. Seas 7 to
8 ft, building to 7 to 10 ft in the afternoon. Wave Detail: SW
8 ft at 8 seconds and W 2 ft at 4 seconds, becoming SW 9 ft at
8 seconds and W 3 ft at 5 seconds.
.SUN NIGHT...NW winds 25 to 30 kt with gusts up to 35 kt. Seas
6 to 9 ft, subsiding to 5 to 7 ft after midnight. Wave Detail: W
8 ft at 7 seconds and SE 2 ft at 11 seconds, becoming W 6 ft at
7 seconds and SE 2 ft at 11 seconds.
.MON...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to
6 ft.
.MON NIGHT...NW winds 15 to 20 kt. Seas 2 to 4 ft.
.TUE...SW winds 25 to 30 kt. Seas 3 to 5 ft. Rain likely with a
chance of snow.
.TUE NIGHT...W winds 25 to 30 kt. Seas 5 to 6 ft. A chance of
rain.
Winds and seas higher in and near tstms.
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.
$$
ANZ232-200400-
Nantucket Sound-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 35 kt with gusts up to 50 kt.
Seas 5 to 8 ft, building to 7 to 9 ft. Wave Detail: SE 6 ft at
6 seconds, becoming S 9 ft at 10 seconds and SW 7 ft at
5 seconds. Rain with a slight chance of tstms. Vsby 1 to 3 NM,
decreasing to 1 NM or less.
.TONIGHT...W winds 30 to 35 kt, becoming 25 to 35 kt after
midnight. Seas 6 to 9 ft. Wave Detail: W 7 ft at 8 seconds and W
6 ft at 5 seconds. A chance of rain in the evening.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt in the afternoon. Seas 5 to 7 ft, subsiding to 2 to
4 ft in the afternoon. Wave Detail: W 5 ft at 5 seconds and W
3 ft at 8 seconds, becoming W 3 ft at 4 seconds and SW 2 ft at
8 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail:
SW 4 ft at 5 seconds and S 2 ft at 10 seconds.
.SUN AND SUN NIGHT...NW winds 25 to 30 kt. Seas 4 to 6 ft. Wave
Detail: SW 5 ft at 7 seconds and W 4 ft at 4 seconds.
.MON AND MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: NW 4 ft at 5 seconds and SW 2 ft at 8 seconds.
.TUE...SW winds 20 to 25 kt. Seas 2 to 3 ft. Rain likely.
.TUE NIGHT...W winds 20 to 25 kt. Seas around 3 ft. A chance of
rain.
Winds and seas higher in and near tstms.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ233-200400-
Vineyard Sound-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 50 kt.
Seas 7 to 10 ft. Wave Detail: S 10 ft at 10 seconds and S 8 ft at
7 seconds. Rain with a slight chance of tstms. Vsby 1 to 3 NM,
decreasing to 1 NM or less.
.TONIGHT...W winds 30 to 35 kt, becoming 25 to 35 kt after
midnight. Seas 7 to 10 ft. Wave Detail: S 10 ft at 11 seconds and
SW 6 ft at 8 seconds. A chance of rain in the evening.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to
7 ft, subsiding to 2 to 4 ft in the afternoon. Wave Detail: SW
7 ft at 11 seconds and W 4 ft at 7 seconds, becoming SW 4 ft at
11 seconds and NW 2 ft at 5 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 2 to 4 ft, building to
4 to 6 ft after midnight. Wave Detail: SW 4 ft at 9 seconds and W
3 ft at 4 seconds, becoming SW 6 ft at 7 seconds and SE 2 ft at
10 seconds.
.SUN AND SUN NIGHT...NW winds 25 to 30 kt. Seas 4 to 6 ft. Wave
Detail: W 6 ft at 6 seconds and SE 2 ft at 10 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft. Wave Detail: NW 4 ft at 6 seconds and SE 1 foot at
10 seconds.
.MON NIGHT...W winds 10 to 15 kt. Seas around 2 ft.
.TUE...SW winds 20 to 25 kt. Seas 2 to 4 ft. Rain likely with a
chance of snow.
.TUE NIGHT...W winds 20 to 25 kt. Seas 3 to 4 ft. A chance of
rain.
Winds and seas higher in and near tstms.
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.
$$
ANZ234-200400-
Buzzards Bay-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 50 kt.
Seas 6 to 8 ft, building to 7 to 10 ft. Wave Detail: S 6 ft at
4 seconds, becoming S 10 ft at 10 seconds and SW 7 ft at
5 seconds. Rain with a slight chance of tstms. Vsby 1 to 3 NM.
.TONIGHT...W winds 30 to 35 kt, diminishing to 25 to 30 kt after
midnight. Seas 6 to 8 ft. Wave Detail: SW 8 ft at 11 seconds and
SW 5 ft at 6 seconds. A chance of rain in the evening.
.SAT...W winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft, subsiding to 2 to 4 ft in the afternoon. Wave Detail: SW
6 ft at 11 seconds and W 4 ft at 5 seconds, becoming S 4 ft at
11 seconds and W 2 ft at 5 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 3 to 5 ft. Wave Detail: SW
5 ft at 5 seconds and S 3 ft at 10 seconds.
.SUN AND SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and W 3 ft at
4 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
3 ft. Wave Detail: N 3 ft at 5 seconds and SW 3 ft at 7 seconds.
A chance of light freezing spray.
.MON NIGHT...W winds 10 to 15 kt. Seas around 2 ft.
.TUE...SW winds 20 to 25 kt. Seas 2 to 4 ft. Rain likely with a
chance of snow.
.TUE NIGHT...W winds 20 to 25 kt. Seas 3 to 4 ft. A chance of
rain.
Winds and seas higher in and near tstms.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ235-200400-
Rhode Island Sound-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 50 kt.
Seas 9 to 11 ft, building to 10 to 13 ft. Wave Detail: S 11 ft at
8 seconds, becoming S 13 ft at 9 seconds and SW 2 ft at
4 seconds. Rain with a slight chance of tstms. Vsby 1 NM or less,
increasing to 1 to 3 NM.
.TONIGHT...W winds 30 to 35 kt, becoming 25 to 35 kt after
midnight. Gusts up to 45 kt. Seas 10 to 12 ft, subsiding to 8 to
11 ft after midnight. Wave Detail: S 12 ft at 11 seconds and W
5 ft at 7 seconds, becoming S 11 ft at 11 seconds and W 6 ft at
7 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to
9 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: S
9 ft at 11 seconds and W 4 ft at 7 seconds, becoming S 6 ft at
11 seconds and W 2 ft at 5 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 4 to 6 ft. Wave Detail: SW
6 ft at 7 seconds and S 5 ft at 10 seconds.
.SUN AND SUN NIGHT...NW winds 25 to 30 kt. Seas 5 to 7 ft. Wave
Detail: SW 7 ft at 8 seconds and W 4 ft at 5 seconds.
.MON AND MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
becoming W 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: W 4 ft at
6 seconds and N 1 foot at 5 seconds.
.TUE...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft. Rain likely with a chance of snow.
.TUE NIGHT...W winds 20 to 25 kt. Seas 4 to 5 ft. A chance of
rain.
Winds and seas higher in and near tstms.
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.
$$
ANZ237-200400-
Block Island Sound-
1007 AM EST Fri Dec 19 2025
...GALE WARNING IN EFFECT THROUGH SATURDAY MORNING...
.THIS AFTERNOON...S winds around 30 kt, becoming SW. Gusts up to
50 kt. Seas 9 to 12 ft. Wave Detail: S 12 ft at 9 seconds and W
4 ft at 5 seconds. Rain with a slight chance of tstms. Vsby 1 NM
or less.
.TONIGHT...W winds 30 to 35 kt, diminishing to 25 to 30 kt after
midnight. Gusts up to 45 kt. Seas 8 to 11 ft. Wave Detail: S
11 ft at 11 seconds and W 7 ft at 7 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to
8 ft, subsiding to 3 to 5 ft in the afternoon. Wave Detail: S
8 ft at 11 seconds and W 5 ft at 6 seconds, becoming S 5 ft at
11 seconds and W 3 ft at 4 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S
6 ft at 7 seconds and S 4 ft at 10 seconds.
.SUN AND SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 5 to 7 ft. Wave Detail: S 6 ft at 8 seconds and W 4 ft at
5 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft. Wave Detail: W 4 ft at 6 seconds and SE 2 ft at 11 seconds.
.MON NIGHT...W winds 10 to 15 kt. Seas around 2 ft.
.TUE...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft. Rain likely with a chance of snow.
.TUE NIGHT...W winds around 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. A chance of rain.
Winds and seas higher in and near tstms.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ230-200400-
Boston Harbor-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 25 to 30 kt with gusts up to 50 kt.
Waves around 2 ft, except 5 to 7 ft at the outer harbor entrance.
Rain. Vsby 1 to 3 NM.
.TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Waves
around 2 ft, except 3 to 5 ft at the outer harbor entrance. A
chance of rain in the evening.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Waves around
2 ft.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Waves
around 2 ft.
.SUN AND SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Waves around 2 ft.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Waves around
2 ft. A chance of light freezing spray.
.MON NIGHT...W winds 10 to 15 kt. Waves around 2 ft.
.TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft. Snow and rain likely. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 15 to 20 kt. Waves 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.
$$
ANZ236-200400-
Narragansett Bay-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 35 kt, becoming 25 to 35 kt.
Gusts up to 55 kt. Waves 5 to 7 ft, except 8 to 11 ft at the bay
entrance. Rain with a slight chance of tstms. Vsby 1 NM or less,
increasing to 1 to 3 NM.
.TONIGHT...W winds 25 to 30 kt, diminishing to 20 to 25 kt after
midnight. Gusts up to 40 kt. Waves 4 to 6 ft. A chance of rain in
the evening.
.SAT...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to
around 10 kt in the afternoon. Waves 2 to 4 ft. At the bay
entrance, waves 5 to 7 ft, subsiding to 3 to 5 ft in the
afternoon.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Waves 2 to 4 ft, building to
4 to 6 ft after midnight.
.SUN...W winds 15 to 20 kt with gusts up to 30 kt. Waves 4 to
6 ft.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Waves
2 to 3 ft.
.MON AND MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt,
becoming W 5 to 10 kt. Waves 2 to 3 ft.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to
4 ft. Rain likely with a chance of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Waves
2 to 4 ft. A chance of rain.
Winds and waves higher in and near tstms.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
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CWFBOX
Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1007 AM EST Fri Dec 19 2025
Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM
ANZ200-200400-
1007 AM EST Fri Dec 19 2025
.Synopsis for Massachusetts and Rhode Island coastal waters...
A strong cold front will sweep across the waters this afternoon and
early evening. It will be preceded by southerly gale to storm force
wind gusts today with a period of brief heavy rains, then shifting
to W gale force gusts tonight. High pres should build over the
waters Sat afternoon before moving offshore, then another cold front
will move through on Sun followed by gale force winds into early
Mon. High pres returns Mon night, then a frontal system moves into
the waters Tue. Low pres develops E of the waters Tue night, then
high pres builds into the region Wed.
$$
ANZ250-200400-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 55 kt.
Seas 7 to 10 ft, building to 10 to 14 ft. Wave Detail: SE 9 ft at
6 seconds, becoming SE 12 ft at 8 seconds and SW 1 foot at
4 seconds. Rain. Vsby 1 NM or less, increasing to 1 to 3 NM.
.TONIGHT...W winds 25 to 30 kt, increasing to 30 to 35 kt after
midnight. Seas 8 to 11 ft. Wave Detail: SE 10 ft at 10 seconds
and SW 7 ft at 7 seconds. A chance of rain in the evening.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt with gusts up to 25 kt in the afternoon. Seas 6 to
9 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: W
7 ft at 7 seconds and SE 6 ft at 11 seconds, becoming W 5 ft at
7 seconds and SE 5 ft at 11 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail:
SW 6 ft at 5 seconds and SE 3 ft at 11 seconds.
.SUN AND SUN NIGHT...NW winds 25 to 30 kt. Seas 5 to 7 ft. Wave
Detail: NW 7 ft at 6 seconds and S 5 ft at 5 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft. Wave Detail: NW 7 ft at 6 seconds and SE 2 ft at
10 seconds.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Rain likely with a chance of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 20 to 25 kt. Seas 3 to 5 ft. A chance of
rain.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ251-200400-
Massachusetts Bay and Ipswich Bay-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 50 kt.
Seas 6 to 8 ft, building to 7 to 10 ft. Wave Detail: SE 8 ft at
6 seconds, becoming SE 9 ft at 8 seconds and E 2 ft at 5 seconds.
Rain. Vsby 1 to 3 NM.
.TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas 5 to
8 ft, subsiding to 5 to 6 ft after midnight. Wave Detail: SE 7 ft
at 10 seconds and W 5 ft at 4 seconds, becoming SW 5 ft at
6 seconds and SE 5 ft at 11 seconds. A chance of rain in the
evening.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: W
5 ft at 6 seconds and SE 3 ft at 11 seconds, becoming NW 3 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. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail:
SW 4 ft at 5 seconds and SE 3 ft at 11 seconds.
.SUN AND SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at
10 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: N 4 ft at 5 seconds and E 2 ft at 11 seconds.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft.
.TUE...SW winds 15 to 20 kt. Seas 2 to 3 ft. Snow and rain
likely. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 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.
$$
ANZ231-200400-
Cape Cod Bay-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt. Gusts up to 45 kt,
increasing to 55 kt. Seas 5 to 7 ft, building to 6 to 9 ft. Wave
Detail: SE 5 ft at 5 seconds, becoming SE 9 ft at 9 seconds and
SE 6 ft at 6 seconds. Rain. Isolated tstms. Vsby 1 to 3 NM,
decreasing to 1 NM or less.
.TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Seas 6 to
7 ft. Wave Detail: SW 5 ft at 5 seconds and SE 5 ft at
10 seconds. A chance of rain in the evening.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft, subsiding to 2 to 4 ft in the afternoon. Wave Detail: W
5 ft at 6 seconds and S 3 ft at 11 seconds, becoming NW 3 ft at
5 seconds and SE 3 ft at 11 seconds.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas
2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at
10 seconds.
.SUN AND SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft. Wave Detail: N 5 ft at 5 seconds and S 3 ft at
6 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to
6 ft. Wave Detail: NW 5 ft at 7 seconds and E 1 foot at
10 seconds.
.MON NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to
4 ft. Rain likely with a chance of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Seas
around 3 ft. A chance of rain.
Winds and seas higher in and near tstms.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ254-200400-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 35 kt. Gusts up to 45 kt,
increasing to 55 kt. Seas 8 to 10 ft, building to 10 to 14 ft.
Wave Detail: S 9 ft at 7 seconds, becoming S 14 ft at 9 seconds.
Rain. Isolated tstms. Vsby 1 to 3 NM, decreasing to 1 NM or less.
.TONIGHT...W winds 25 to 35 kt with gusts up to 40 kt. Seas 9 to
13 ft, except 12 to 16 ft S and E of Nantucket. Wave Detail: S
13 ft at 11 seconds and W 7 ft at 7 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 40 kt, diminishing to
15 to 20 kt in the afternoon. Seas 7 to 10 ft, subsiding to 5 to
7 ft in the afternoon. S and E of Nantucket, seas 10 to 14 ft,
subsiding to 6 to 9 ft in the afternoon. Wave Detail: S 9 ft at
11 seconds and W 6 ft at 7 seconds, becoming S 6 ft at 11 seconds
and W 5 ft at 7 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail:
SW 6 ft at 6 seconds and SE 5 ft at 10 seconds.
.SUN AND SUN NIGHT...NW winds 25 to 30 kt. Seas 5 to 8 ft. Wave
Detail: NW 7 ft at 6 seconds and S 6 ft at 8 seconds.
.MON...NW winds 25 to 30 kt. Seas 5 to 8 ft. Wave Detail: W 7 ft
at 7 seconds and N 2 ft at 6 seconds.
.MON NIGHT...NW winds 15 to 20 kt. Seas 4 to 6 ft.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Rain likely.
.TUE NIGHT...W winds 20 to 25 kt. Seas 3 to 5 ft. A chance of
rain.
Winds and seas higher in and near tstms.
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.
$$
ANZ255-200400-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 4 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 50 kt.
Seas 9 to 12 ft, building to 11 to 15 ft. Wave Detail: S 12 ft at
7 seconds, becoming S 15 ft at 9 seconds and SW 1 foot at
4 seconds. Rain with a slight chance of tstms. Vsby 1 to 3 NM,
decreasing to 1 NM or less.
.TONIGHT...W winds 30 to 40 kt with gusts up to 45 kt. Seas 12 to
16 ft. Wave Detail: SW 16 ft at 11 seconds and W 12 ft at
9 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 40 kt, diminishing to
15 to 20 kt in the afternoon. Seas 9 to 12 ft, subsiding to 5 to
7 ft in the afternoon. Wave Detail: SW 12 ft at 11 seconds and W
9 ft at 9 seconds, becoming SW 7 ft at 10 seconds and W 5 ft at
9 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 5 to 7 ft. Wave Detail: SW
7 ft at 7 seconds and S 6 ft at 10 seconds.
.SUN...W winds 25 to 30 kt with gusts up to 35 kt. Seas 6 to
8 ft, building to 7 to 10 ft in the afternoon. Wave Detail: SW
8 ft at 8 seconds and W 2 ft at 4 seconds, becoming SW 9 ft at
8 seconds and W 2 ft at 5 seconds.
.SUN NIGHT...NW winds 25 to 30 kt with gusts up to 35 kt. Seas
7 to 10 ft, subsiding to 5 to 7 ft after midnight. Wave Detail: W
10 ft at 8 seconds and NW 4 ft at 5 seconds, becoming W 7 ft at
7 seconds and SE 2 ft at 11 seconds.
.MON...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to
6 ft.
.MON NIGHT...NW winds 15 to 20 kt. Seas 3 to 5 ft.
.TUE...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to
5 ft. Rain likely.
.TUE NIGHT...W winds 25 to 30 kt. Seas 4 to 6 ft. A chance of
rain.
Winds and seas higher in and near tstms.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ256-200400-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1007 AM EST Fri Dec 19 2025
...GALE WARNING IN EFFECT THROUGH SATURDAY MORNING...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 50 kt.
Seas 11 to 13 ft, building to 12 to 15 ft. Wave Detail: S 12 ft
at 8 seconds, becoming S 15 ft at 9 seconds and W 1 foot at
4 seconds. Rain with isolated tstms. Vsby 1 NM or less.
.TONIGHT...W winds 30 to 40 kt with gusts up to 45 kt. Seas 13 to
15 ft, subsiding to 11 to 15 ft after midnight. Wave Detail: S
15 ft at 11 seconds and W 6 ft at 7 seconds, becoming S 14 ft at
11 seconds and W 9 ft at 9 seconds.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt in the afternoon. Seas 8 to 11 ft, subsiding to 5 to
7 ft in the afternoon. Wave Detail: SW 11 ft at 11 seconds and W
6 ft at 9 seconds, becoming S 7 ft at 10 seconds and NW 2 ft at
5 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt
after midnight. Seas 4 to 6 ft, building to 6 to 7 ft after
midnight. Wave Detail: SW 6 ft at 10 seconds and W 2 ft at
4 seconds, becoming SW 7 ft at 7 seconds and SE 4 ft at
10 seconds.
.SUN...W winds 25 to 30 kt with gusts up to 35 kt. Seas 7 to
8 ft, building to 7 to 10 ft in the afternoon. Wave Detail: SW
8 ft at 8 seconds and W 2 ft at 4 seconds, becoming SW 9 ft at
8 seconds and W 3 ft at 5 seconds.
.SUN NIGHT...NW winds 25 to 30 kt with gusts up to 35 kt. Seas
6 to 9 ft, subsiding to 5 to 7 ft after midnight. Wave Detail: W
8 ft at 7 seconds and SE 2 ft at 11 seconds, becoming W 6 ft at
7 seconds and SE 2 ft at 11 seconds.
.MON...NW winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to
6 ft.
.MON NIGHT...NW winds 15 to 20 kt. Seas 2 to 4 ft.
.TUE...SW winds 25 to 30 kt. Seas 3 to 5 ft. Rain likely with a
chance of snow.
.TUE NIGHT...W winds 25 to 30 kt. Seas 5 to 6 ft. A chance of
rain.
Winds and seas higher in and near tstms.
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.
$$
ANZ232-200400-
Nantucket Sound-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 35 kt with gusts up to 50 kt.
Seas 5 to 8 ft, building to 7 to 9 ft. Wave Detail: SE 6 ft at
6 seconds, becoming S 9 ft at 10 seconds and SW 7 ft at
5 seconds. Rain with a slight chance of tstms. Vsby 1 to 3 NM,
decreasing to 1 NM or less.
.TONIGHT...W winds 30 to 35 kt, becoming 25 to 35 kt after
midnight. Seas 6 to 9 ft. Wave Detail: W 7 ft at 8 seconds and W
6 ft at 5 seconds. A chance of rain in the evening.
.SAT...W winds 25 to 30 kt with gusts up to 35 kt, diminishing to
15 to 20 kt in the afternoon. Seas 5 to 7 ft, subsiding to 2 to
4 ft in the afternoon. Wave Detail: W 5 ft at 5 seconds and W
3 ft at 8 seconds, becoming W 3 ft at 4 seconds and SW 2 ft at
8 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail:
SW 4 ft at 5 seconds and S 2 ft at 10 seconds.
.SUN AND SUN NIGHT...NW winds 25 to 30 kt. Seas 4 to 6 ft. Wave
Detail: SW 5 ft at 7 seconds and W 4 ft at 4 seconds.
.MON AND MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
diminishing to 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: NW 4 ft at 5 seconds and SW 2 ft at 8 seconds.
.TUE...SW winds 20 to 25 kt. Seas 2 to 3 ft. Rain likely.
.TUE NIGHT...W winds 20 to 25 kt. Seas around 3 ft. A chance of
rain.
Winds and seas higher in and near tstms.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ233-200400-
Vineyard Sound-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 50 kt.
Seas 7 to 10 ft. Wave Detail: S 10 ft at 10 seconds and S 8 ft at
7 seconds. Rain with a slight chance of tstms. Vsby 1 to 3 NM,
decreasing to 1 NM or less.
.TONIGHT...W winds 30 to 35 kt, becoming 25 to 35 kt after
midnight. Seas 7 to 10 ft. Wave Detail: S 10 ft at 11 seconds and
SW 6 ft at 8 seconds. A chance of rain in the evening.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to
7 ft, subsiding to 2 to 4 ft in the afternoon. Wave Detail: SW
7 ft at 11 seconds and W 4 ft at 7 seconds, becoming SW 4 ft at
11 seconds and NW 2 ft at 5 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 2 to 4 ft, building to
4 to 6 ft after midnight. Wave Detail: SW 4 ft at 9 seconds and W
3 ft at 4 seconds, becoming SW 6 ft at 7 seconds and SE 2 ft at
10 seconds.
.SUN AND SUN NIGHT...NW winds 25 to 30 kt. Seas 4 to 6 ft. Wave
Detail: W 6 ft at 6 seconds and SE 2 ft at 10 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft. Wave Detail: NW 4 ft at 6 seconds and SE 1 foot at
10 seconds.
.MON NIGHT...W winds 10 to 15 kt. Seas around 2 ft.
.TUE...SW winds 20 to 25 kt. Seas 2 to 4 ft. Rain likely with a
chance of snow.
.TUE NIGHT...W winds 20 to 25 kt. Seas 3 to 4 ft. A chance of
rain.
Winds and seas higher in and near tstms.
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.
$$
ANZ234-200400-
Buzzards Bay-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 50 kt.
Seas 6 to 8 ft, building to 7 to 10 ft. Wave Detail: S 6 ft at
4 seconds, becoming S 10 ft at 10 seconds and SW 7 ft at
5 seconds. Rain with a slight chance of tstms. Vsby 1 to 3 NM.
.TONIGHT...W winds 30 to 35 kt, diminishing to 25 to 30 kt after
midnight. Seas 6 to 8 ft. Wave Detail: SW 8 ft at 11 seconds and
SW 5 ft at 6 seconds. A chance of rain in the evening.
.SAT...W winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to
6 ft, subsiding to 2 to 4 ft in the afternoon. Wave Detail: SW
6 ft at 11 seconds and W 4 ft at 5 seconds, becoming S 4 ft at
11 seconds and W 2 ft at 5 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 3 to 5 ft. Wave Detail: SW
5 ft at 5 seconds and S 3 ft at 10 seconds.
.SUN AND SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 3 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and W 3 ft at
4 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
3 ft. Wave Detail: N 3 ft at 5 seconds and SW 3 ft at 7 seconds.
A chance of light freezing spray.
.MON NIGHT...W winds 10 to 15 kt. Seas around 2 ft.
.TUE...SW winds 20 to 25 kt. Seas 2 to 4 ft. Rain likely with a
chance of snow.
.TUE NIGHT...W winds 20 to 25 kt. Seas 3 to 4 ft. A chance of
rain.
Winds and seas higher in and near tstms.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ235-200400-
Rhode Island Sound-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 40 kt with gusts up to 50 kt.
Seas 9 to 11 ft, building to 10 to 13 ft. Wave Detail: S 11 ft at
8 seconds, becoming S 13 ft at 9 seconds and SW 2 ft at
4 seconds. Rain with a slight chance of tstms. Vsby 1 NM or less,
increasing to 1 to 3 NM.
.TONIGHT...W winds 30 to 35 kt, becoming 25 to 35 kt after
midnight. Gusts up to 45 kt. Seas 10 to 12 ft, subsiding to 8 to
11 ft after midnight. Wave Detail: S 12 ft at 11 seconds and W
5 ft at 7 seconds, becoming S 11 ft at 11 seconds and W 6 ft at
7 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to
9 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: S
9 ft at 11 seconds and W 4 ft at 7 seconds, becoming S 6 ft at
11 seconds and W 2 ft at 5 seconds.
.SAT NIGHT...SW winds 20 to 25 kt, increasing to 25 to 30 kt with
gusts up to 35 kt after midnight. Seas 4 to 6 ft. Wave Detail: SW
6 ft at 7 seconds and S 5 ft at 10 seconds.
.SUN AND SUN NIGHT...NW winds 25 to 30 kt. Seas 5 to 7 ft. Wave
Detail: SW 7 ft at 8 seconds and W 4 ft at 5 seconds.
.MON AND MON NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt,
becoming W 10 to 15 kt. Seas 2 to 4 ft. Wave Detail: W 4 ft at
6 seconds and N 1 foot at 5 seconds.
.TUE...SW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft. Rain likely with a chance of snow.
.TUE NIGHT...W winds 20 to 25 kt. Seas 4 to 5 ft. A chance of
rain.
Winds and seas higher in and near tstms.
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.
$$
ANZ237-200400-
Block Island Sound-
1007 AM EST Fri Dec 19 2025
...GALE WARNING IN EFFECT THROUGH SATURDAY MORNING...
.THIS AFTERNOON...S winds around 30 kt, becoming SW. Gusts up to
50 kt. Seas 9 to 12 ft. Wave Detail: S 12 ft at 9 seconds and W
4 ft at 5 seconds. Rain with a slight chance of tstms. Vsby 1 NM
or less.
.TONIGHT...W winds 30 to 35 kt, diminishing to 25 to 30 kt after
midnight. Gusts up to 45 kt. Seas 8 to 11 ft. Wave Detail: S
11 ft at 11 seconds and W 7 ft at 7 seconds.
.SAT...W winds 20 to 25 kt with gusts up to 30 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to
8 ft, subsiding to 3 to 5 ft in the afternoon. Wave Detail: S
8 ft at 11 seconds and W 5 ft at 6 seconds, becoming S 5 ft at
11 seconds and W 3 ft at 4 seconds.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S
6 ft at 7 seconds and S 4 ft at 10 seconds.
.SUN AND SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Seas 5 to 7 ft. Wave Detail: S 6 ft at 8 seconds and W 4 ft at
5 seconds.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to
4 ft. Wave Detail: W 4 ft at 6 seconds and SE 2 ft at 11 seconds.
.MON NIGHT...W winds 10 to 15 kt. Seas around 2 ft.
.TUE...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to
4 ft. Rain likely with a chance of snow.
.TUE NIGHT...W winds around 20 kt with gusts up to 25 kt. Seas
3 to 4 ft. A chance of rain.
Winds and seas higher in and near tstms.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
ANZ230-200400-
Boston Harbor-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 25 to 30 kt with gusts up to 50 kt.
Waves around 2 ft, except 5 to 7 ft at the outer harbor entrance.
Rain. Vsby 1 to 3 NM.
.TONIGHT...W winds 25 to 30 kt with gusts up to 40 kt. Waves
around 2 ft, except 3 to 5 ft at the outer harbor entrance. A
chance of rain in the evening.
.SAT...W winds 20 to 25 kt with gusts up to 35 kt, diminishing to
10 to 15 kt with gusts up to 20 kt in the afternoon. Waves around
2 ft.
.SAT NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Waves
around 2 ft.
.SUN AND SUN NIGHT...NW winds 20 to 25 kt with gusts up to 30 kt.
Waves around 2 ft.
.MON...NW winds 20 to 25 kt with gusts up to 30 kt. Waves around
2 ft. A chance of light freezing spray.
.MON NIGHT...W winds 10 to 15 kt. Waves around 2 ft.
.TUE...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around
2 ft. Snow and rain likely. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 15 to 20 kt. Waves 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.
$$
ANZ236-200400-
Narragansett Bay-
1007 AM EST Fri Dec 19 2025
...STORM WARNING IN EFFECT UNTIL 3 PM EST THIS AFTERNOON...
.THIS AFTERNOON...S winds 30 to 35 kt, becoming 25 to 35 kt.
Gusts up to 55 kt. Waves 5 to 7 ft, except 8 to 11 ft at the bay
entrance. Rain with a slight chance of tstms. Vsby 1 NM or less,
increasing to 1 to 3 NM.
.TONIGHT...W winds 25 to 30 kt, diminishing to 20 to 25 kt after
midnight. Gusts up to 40 kt. Waves 4 to 6 ft. A chance of rain in
the evening.
.SAT...W winds 15 to 20 kt with gusts up to 30 kt, diminishing to
around 10 kt in the afternoon. Waves 2 to 4 ft. At the bay
entrance, waves 5 to 7 ft, subsiding to 3 to 5 ft in the
afternoon.
.SAT NIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt
after midnight. Gusts up to 30 kt. Waves 2 to 4 ft, building to
4 to 6 ft after midnight.
.SUN...W winds 15 to 20 kt with gusts up to 30 kt. Waves 4 to
6 ft.
.SUN NIGHT...NW winds 15 to 20 kt with gusts up to 30 kt. Waves
2 to 3 ft.
.MON AND MON NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt,
becoming W 5 to 10 kt. Waves 2 to 3 ft.
.TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to
4 ft. Rain likely with a chance of snow. Vsby 1 to 3 NM.
.TUE NIGHT...W winds 15 to 20 kt with gusts up to 25 kt. Waves
2 to 4 ft. A chance of rain.
Winds and waves higher in and near tstms.
Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.
$$
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