856
FZUS51 KBOX 172004
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 PM EDT Sun Aug 17 2025

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM

ANZ200-180900-
404 PM EDT Sun Aug 17 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
Cold front pushes through this evening with a round of gusty NE
winds. High pressure builds overhead Monday and Tuesday. All
mariners are urged to closely follow the National Hurricane Center
Forecasts for the impacts of Major Hurricane Erin...especially those
with interests in the Atlantic. Although the Major Hurricane will be
passing well to the east of our waters later this week...high seas
are expected to enter our open waters from large southeast swell.

$$

ANZ250-180900-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
404 PM EDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EDT THIS EVENING
THROUGH MONDAY EVENING...

.TONIGHT...W winds 15 to 20 kt, becoming NE 20 to 25 kt after
midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: NE 5 ft
at 5 seconds and SW 3 ft at 4 seconds. A chance of showers with
isolated tstms this evening, then a slight chance of showers
after midnight.
.MON...NE winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: NE
6 ft at 7 seconds and SE 1 foot at 13 seconds.
.MON NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft. Wave Detail: NE 5 ft at 7 seconds and SE
2 ft at 13 seconds.
.TUE...E winds around 10 kt. Seas around 3 ft. Wave Detail: NE
3 ft at 7 seconds and SE 2 ft at 11 seconds.
.TUE NIGHT...SE winds around 10 kt. Gusts up to 20 kt in the
evening. Seas 3 to 4 ft. Wave Detail: E 2 ft at 9 seconds and SE
2 ft at 12 seconds.
.WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: SE 3 ft at 14 seconds and E 2 ft at 7 seconds.
A chance of showers in the afternoon.
.WED NIGHT...E winds 10 to 15 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of showers.
.THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to
8 ft.
.THU NIGHT AND FRI...N winds 15 to 20 kt with gusts up to 30 kt.
Seas 6 to 9 ft.
.FRI NIGHT...SW winds around 15 kt with gusts up to 20 kt. Seas
4 to 6 ft.

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.

$$

ANZ251-180900-
Massachusetts Bay and Ipswich Bay-
404 PM EDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EDT THIS EVENING
THROUGH MONDAY EVENING...

.TONIGHT...NW winds 15 to 20 kt, becoming NE 20 to 25 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: NE 4 ft
at 4 seconds and SW 2 ft at 3 seconds. A chance of showers with
isolated tstms this evening, then a slight chance of showers
after midnight.
.MON...NE winds 20 to 25 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: NE
5 ft at 7 seconds and SE 1 foot at 13 seconds.
.MON NIGHT...E winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: NE
4 ft at 7 seconds and SE 1 foot at 13 seconds.
.TUE...E winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas 2 to 3 ft. Wave Detail: NE 3 ft at 7 seconds and SE 1 foot
at 11 seconds.
.TUE NIGHT...SE winds around 10 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: E 2 ft at 9 seconds and SE
1 foot at 15 seconds.
.WED AND WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and SE 2 ft at
17 seconds. A chance of showers.
.THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft.
.THU NIGHT AND FRI...N winds 15 to 20 kt with gusts up to 25 kt.
Seas 4 to 6 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 5 ft.

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.

$$

ANZ231-180900-
Cape Cod Bay-
404 PM EDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.TONIGHT...SW winds 10 to 15 kt, becoming N 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: NE 3 ft
at 6 seconds and SW 2 ft at 3 seconds. A chance of showers with
isolated tstms this evening, then a slight chance of showers
after midnight.
.MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: N 4 ft at 5 seconds and SE 1 foot at
13 seconds.
.MON NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: N 4 ft at 6 seconds and SE
1 foot at 13 seconds.
.TUE...E winds around 10 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: NE 2 ft at 5 seconds and SE 2 ft at
12 seconds.
.TUE NIGHT...E winds around 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and
SE 2 ft at 15 seconds.
.WED AND WED NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 3 ft. Wave Detail: SE 3 ft at 16 seconds and E 2 ft at
3 seconds. A chance of showers.
.THU THROUGH FRI NIGHT...SW winds 15 to 20 kt with gusts up to
30 kt. Seas 3 to 5 ft.

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.

$$

ANZ254-180900-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
404 PM EDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EDT THIS EVENING
THROUGH MONDAY EVENING...

.TONIGHT...SW winds around 15 kt, becoming N 20 to 25 kt after
midnight. Gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft
at 7 seconds and SW 3 ft at 4 seconds. A chance of showers. Vsby
1 to 3 NM after midnight.
.MON...NE winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: NE
6 ft at 6 seconds and SW 1 foot at 5 seconds.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. Wave Detail: NE 6 ft at 8 seconds and SE 2 ft at
13 seconds.
.TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: NE 4 ft at 7 seconds and SE 3 ft at
13 seconds.
.TUE NIGHT...E winds around 10 kt. Gusts up to 20 kt in the
evening. Seas 3 to 5 ft. Wave Detail: S 4 ft at 15 seconds and E
3 ft at 8 seconds.
.WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
7 ft. Wave Detail: S 6 ft at 16 seconds and E 3 ft at 8 seconds.
A chance of showers in the afternoon.
.WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas
6 to 9 ft, building to 8 to 11 ft after midnight. S and E of
Nantucket, seas 9 to 13 ft, building to 11 to 15 ft after
midnight. A chance of showers.
.THU AND THU NIGHT...NE winds 15 to 20 kt, becoming N 20 to
25 kt. Gusts up to 30 kt. Seas 9 to 12 ft. S and E of Nantucket,
seas 12 to 16 ft, subsiding to 9 to 13 ft.
.FRI...N winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft.
.FRI NIGHT...W winds 15 to 20 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.

$$

ANZ255-180900-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
404 PM EDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT EDT TONIGHT
THROUGH MONDAY EVENING...

.TONIGHT...SW winds 10 to 15 kt, becoming NW 20 to 25 kt after
midnight. Gusts up to 30 kt. Seas around 3 ft. Wave Detail: SW
3 ft at 5 seconds and E 2 ft at 6 seconds. A chance of showers.
Vsby 1 to 3 NM.
.MON...NE winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: NE
5 ft at 5 seconds and SW 2 ft at 5 seconds.
.MON NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
3 to 5 ft. Wave Detail: NE 5 ft at 8 seconds and SE 2 ft at
14 seconds.
.TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: NE 4 ft at 7 seconds and S 4 ft at 15 seconds.
.TUE NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
5 to 7 ft. Wave Detail: S 6 ft at 15 seconds and E 3 ft at
6 seconds.
.WED...E winds around 15 kt with gusts up to 20 kt. Seas 5 to
8 ft, building to 7 to 10 ft in the afternoon. Wave Detail: S
7 ft at 16 seconds and E 3 ft at 6 seconds, becoming S 9 ft at
16 seconds and E 2 ft at 6 seconds. A chance of showers in the
afternoon.
.WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas
8 to 11 ft, building to 10 to 14 ft after midnight. A chance of
showers.
.THU...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 11 to
15 ft.
.THU NIGHT...N winds around 25 kt with gusts up to 35 kt. Seas
8 to 11 ft.
.FRI...N winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
8 ft.
.FRI NIGHT...W winds 15 to 20 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.

$$

ANZ256-180900-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
404 PM EDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT EDT TONIGHT
THROUGH MONDAY EVENING...

.TONIGHT...SW winds 10 to 15 kt, becoming NW 20 to 25 kt after
midnight. Gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft
at 4 seconds and E 2 ft at 7 seconds. A chance of showers.
Isolated tstms this evening. Vsby 1 to 3 NM.
.MON...NE winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: NE
5 ft at 5 seconds and SW 2 ft at 5 seconds.
.MON NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 5 ft. Wave Detail: NE 5 ft at 6 seconds and SE 3 ft at
13 seconds.
.TUE...E winds around 15 kt with gusts up to 25 kt. Seas 4 to
5 ft. Wave Detail: E 4 ft at 5 seconds and SE 4 ft at 15 seconds.
.TUE NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
5 to 7 ft. Wave Detail: SE 7 ft at 15 seconds and E 4 ft at
5 seconds.
.WED...E winds around 15 kt with gusts up to 20 kt. Seas 6 to
8 ft, building to 7 to 10 ft in the afternoon. Wave Detail: SE
7 ft at 15 seconds and E 2 ft at 5 seconds, becoming SE 9 ft at
16 seconds and E 2 ft at 6 seconds. A chance of showers.
.WED NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
9 to 12 ft, building to 11 to 15 ft after midnight. A chance of
showers.
.THU...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 12 to
16 ft.
.THU NIGHT...N winds 20 to 25 kt with gusts up to 35 kt. Seas
9 to 12 ft.
.FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft.
.FRI NIGHT...SW winds 15 to 20 kt. Seas 4 to 6 ft.

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.

$$

ANZ232-180900-
Nantucket Sound-
404 PM EDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.TONIGHT...SW winds 10 to 15 kt, becoming N 20 to 25 kt after
midnight. Gusts up to 30 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 4 seconds and NE 2 ft at 6 seconds. A chance of showers. Vsby
1 to 3 NM after midnight.
.MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas around
3 ft. Wave Detail: NE 3 ft at 4 seconds and W 1 foot at
5 seconds.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: N 3 ft at 5 seconds and SE 1 foot at
13 seconds.
.TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: E 2 ft at 4 seconds and SE 2 ft at 15 seconds.
.TUE NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: E 2 ft at 5 seconds and S 2 ft at
16 seconds.
.WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
5 ft. Wave Detail: S 3 ft at 16 seconds and E 2 ft at 5 seconds.
A chance of showers in the afternoon.
.WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of showers.
.THU...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft.
.THU NIGHT AND FRI...N winds 20 to 25 kt with gusts up to 30 kt.
Seas 4 to 6 ft.
.FRI NIGHT...W winds 15 to 20 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.

$$

ANZ233-180900-
Vineyard Sound-
404 PM EDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.TONIGHT...SW winds 10 to 15 kt, becoming N 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft
at 4 seconds and NE 2 ft at 6 seconds. A chance of showers.
Isolated tstms this evening. Vsby 1 to 3 NM.
.MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: NE 3 ft at 4 seconds and SW 1 foot at
5 seconds.
.MON NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and SE
1 foot at 14 seconds.
.TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: NE 2 ft at 3 seconds and S 2 ft at 16 seconds.
.TUE NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 4 ft. Wave Detail: S 3 ft at 16 seconds and E
2 ft at 4 seconds.
.WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to
6 ft. Wave Detail: S 4 ft at 15 seconds and E 2 ft at 4 seconds.
A chance of showers in the afternoon.
.WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas
5 to 8 ft. A chance of showers.
.THU...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to
9 ft.
.THU NIGHT...N winds around 20 kt with gusts up to 30 kt. Seas
4 to 6 ft.
.FRI...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft.
.FRI NIGHT...SW winds 15 to 20 kt. Seas 2 to 4 ft.

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.

$$

ANZ234-180900-
Buzzards Bay-
404 PM EDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.TONIGHT...SW winds 10 to 15 kt, becoming N 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft
at 4 seconds and NE 2 ft at 6 seconds. A chance of showers.
Isolated tstms this evening with vsby 1 to 3 NM.
.MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: NE 3 ft at 4 seconds and SW 1 foot at
5 seconds.
.MON NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and SE
1 foot at 14 seconds.
.TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: S 2 ft at 15 seconds and NE 1 foot at
3 seconds.
.TUE NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas 2 to 3 ft. Wave Detail: S 3 ft at 16 seconds and E
2 ft at 3 seconds.
.WED...E winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
5 ft. Wave Detail: S 3 ft at 15 seconds and E 1 foot at
3 seconds. A chance of showers in the afternoon.
.WED NIGHT...E winds around 15 kt with gusts up to 25 kt. Seas
4 to 6 ft. A chance of showers.
.THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft.
.THU NIGHT...N winds around 20 kt with gusts up to 30 kt. Seas
3 to 5 ft.
.FRI...NW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to
6 ft.
.FRI NIGHT...SW winds 15 to 20 kt. Seas 2 to 4 ft.

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.

$$

ANZ235-180900-
Rhode Island Sound-
404 PM EDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.TONIGHT...SW winds 10 to 15 kt, becoming N 20 to 25 kt after
midnight. Gusts up to 30 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft
at 4 seconds and NE 2 ft at 6 seconds. A chance of showers.
Isolated tstms this evening. Vsby 1 to 3 NM.
.MON...NE winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: NE
4 ft at 4 seconds and SW 2 ft at 5 seconds.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas
2 to 4 ft. Wave Detail: NE 4 ft at 5 seconds and SE 2 ft at
14 seconds.
.TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
4 ft. Wave Detail: E 3 ft at 5 seconds and SE 3 ft at 15 seconds.
.TUE NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. Wave Detail: S 6 ft at 15 seconds and E 3 ft at
5 seconds.
.WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
8 ft. Wave Detail: S 7 ft at 16 seconds and E 3 ft at 5 seconds.
A chance of showers.
.WED NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas
7 to 10 ft, building to 9 to 12 ft after midnight. A chance of
showers.
.THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 9 to
13 ft.
.THU NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas
6 to 9 ft.
.FRI...NW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to
7 ft.
.FRI NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft.

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.

$$

ANZ237-180900-
Block Island Sound-
404 PM EDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON...

.TONIGHT...SW winds 10 to 15 kt, becoming N 15 to 20 kt after
midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft
at 4 seconds and E 2 ft at 7 seconds. A chance of showers.
Isolated tstms this evening with vsby 1 to 3 NM.
.MON...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: NE 4 ft at 5 seconds and S 2 ft at 5 seconds.
.MON NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas
3 to 4 ft. Wave Detail: E 4 ft at 6 seconds and SE 2 ft at
15 seconds.
.TUE...E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to
4 ft. Wave Detail: E 3 ft at 5 seconds and SE 3 ft at 15 seconds.
.TUE NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas
4 to 6 ft. Wave Detail: S 5 ft at 15 seconds and E 3 ft at
5 seconds.
.WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to
8 ft. Wave Detail: S 7 ft at 16 seconds and E 2 ft at 5 seconds.
A chance of showers.
.WED NIGHT...NE winds around 15 kt with gusts up to 25 kt. Seas
8 to 11 ft. A chance of showers.
.THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 9 to
13 ft.
.THU NIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas
7 to 10 ft.
.FRI...NW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to
6 ft.
.FRI NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas
3 to 4 ft.

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.

$$

ANZ230-180900-
Boston Harbor-
404 PM EDT Sun Aug 17 2025

.TONIGHT...NW winds 10 to 15 kt, becoming NE 15 to 20 kt after
midnight. Gusts up to 25 kt. Waves around 2 ft. A slight chance
of showers. Isolated tstms this evening.
.MON...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Gusts up to 25 kt. Waves 2 to 3 ft.
.MON NIGHT...E winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.TUE...NE winds 5 to 10 kt, becoming E 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.
.TUE NIGHT...SE winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Waves around 2 ft in the evening, then 1 foot or less.
.WED AND WED NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Waves around 2 ft. A chance of showers.
.THU THROUGH FRI NIGHT...SW winds 10 to 15 kt with gusts up to
25 kt. Waves 2 to 3 ft.

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.

$$

ANZ236-180900-
Narragansett Bay-
404 PM EDT Sun Aug 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.TONIGHT...SW winds 10 to 15 kt, becoming N after midnight. Gusts
up to 25 kt. Waves 2 to 3 ft. A chance of showers. A chance of
tstms this evening. Vsby 1 to 3 NM.
.MON...NE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to
3 ft.
.MON NIGHT...NE winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Waves around 2 ft.
.TUE...E winds 5 to 10 kt with gusts up to 20 kt. Waves 2 to
3 ft.
.TUE NIGHT...E winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Waves 2 to 4 ft.
.WED...E winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Gusts up to 20 kt. Waves 3 to 5 ft. A chance of
showers.
.WED NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves
2 to 3 ft, except 5 to 7 ft at the bay entrance. A chance of
showers.
.THU THROUGH FRI NIGHT...SW winds 15 to 20 kt with gusts up to
25 kt. Waves 2 to 4 ft, except 5 to 7 ft at the bay entrance.

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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