094
FZUS51 KBOX 090205
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1005 PM EDT Fri Aug 8 2025

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

ANZ200-091500-
1005 PM EDT Fri Aug 8 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pres will persist over the waters through the weekend which
will bring quiet boating conditions. The high pres will shift south
of the waters next week with SW flow developing.

$$

ANZ250-091500-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...S winds 5 to 10 kt. Seas around 3 ft. Wave Detail: E
3 ft at 9 seconds and S 1 foot at 4 seconds.
.SAT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 9 seconds and S 1 foot at 8 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and SE 2 ft at 8 seconds.
.SUN...S winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds
and E 2 ft at 8 seconds.
.SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and S
2 ft at 3 seconds.
.TUE THROUGH WED NIGHT...SW winds 15 to 20 kt with gusts up to
25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and E
3 ft at 9 seconds.

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.

$$

ANZ251-091500-
Massachusetts Bay and Ipswich Bay-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and SE 2 ft at 4 seconds.
.SAT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 9 seconds and SE 1 foot at 7 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 5 seconds and E 2 ft at 9 seconds.
.SUN...S winds 5 to 10 kt, becoming SE 10 to 15 kt in the
afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds
and E 2 ft at 9 seconds.
.SUN NIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and
S 1 foot at 3 seconds.
.MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at
8 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ231-091500-
Cape Cod Bay-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
E 2 ft at 7 seconds and SE 1 foot at 4 seconds.
.SAT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 7 seconds. Patchy fog in the morning.
.SAT NIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 5 seconds.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 7 seconds and S 1 foot at 2 seconds.
.SUN NIGHT THROUGH MON NIGHT...SW winds 5 to 10 kt. Seas around
2 ft. Wave Detail: SE 2 ft at 7 seconds and S 1 foot at
2 seconds.
.TUE AND TUE NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at
9 seconds.
.WED AND WED NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt.
Seas 2 to 4 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ254-091500-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and SE 1 foot at 8 seconds.
.SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds and SE 1 foot at 8 seconds.
.SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and SE 2 ft at 6 seconds.
.SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
8 seconds and SE 2 ft at 7 seconds.
.SUN NIGHT THROUGH MON NIGHT...SW winds 5 to 10 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 3 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
25 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E
3 ft at 9 seconds.

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.

$$

ANZ255-091500-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and SE 2 ft at 8 seconds.
.SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds and SE 2 ft at 7 seconds.
.SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and SE 2 ft at 6 seconds.
.SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
8 seconds and SE 2 ft at 7 seconds.
.SUN NIGHT THROUGH MON NIGHT...SW winds 5 to 10 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 4 seconds.
.TUE THROUGH WED NIGHT...SW 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 E
3 ft at 9 seconds.

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.

$$

ANZ256-091500-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and SE 2 ft at 8 seconds.
.SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
9 seconds and SE 2 ft at 7 seconds. Patchy fog in the morning.
.SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 9 seconds and SE 2 ft at 7 seconds.
.SUN...NE winds 5 to 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds.
.SUN NIGHT THROUGH MON NIGHT...SW winds around 10 kt. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 3 seconds.
.TUE THROUGH WED NIGHT...SW 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 E
3 ft at 8 seconds.

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.

$$

ANZ232-091500-
Nantucket Sound-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds.
.SAT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 7 seconds.
.SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds.
.SUN...E winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 7 seconds and S 1 foot at
3 seconds.
.SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds.
.TUE THROUGH WED NIGHT...SW winds 15 to 20 kt. Seas 2 to 3 ft.
Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 9 seconds.

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.

$$

ANZ233-091500-
Vineyard Sound-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 1 foot at 6 seconds. Patchy fog.
.SAT...E winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft
in the afternoon. Wave Detail: SE 1 foot at 6 seconds, becoming
SE 1 foot at 5 seconds. Patchy fog in the morning.
.SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 1 foot at 6 seconds.
.SUN...NW winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: NW 1 foot at 2 seconds and E 1 foot at
7 seconds.
.SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 7 seconds.
.TUE THROUGH WED NIGHT...SW 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 E
2 ft at 9 seconds.

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.

$$

ANZ234-091500-
Buzzards Bay-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...SE winds 5 to 10 kt, becoming E. Seas 1 foot or
less. Wave Detail: SE 1 foot at 5 seconds.
.SAT...E winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SE
1 foot at 6 seconds. Patchy fog in the morning.
.SAT NIGHT...SE winds around 5 kt, becoming SW after midnight.
Seas 1 foot or less. Wave Detail: SE 1 foot at 5 seconds.
.SUN...W winds 5 to 10 kt, becoming S in the afternoon. Seas
1 foot or less, then around 2 ft in the afternoon. Wave Detail: W
1 foot at 2 seconds and SE 1 foot at 7 seconds, becoming S 1 foot
at 2 seconds and SE 1 foot at 7 seconds.
.SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt with gusts up
to 20 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and
S 1 foot at 3 seconds.
.TUE THROUGH WED NIGHT...SW winds 15 to 20 kt with gusts up to
25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E
2 ft at 9 seconds.

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.

$$

ANZ235-091500-
Rhode Island Sound-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 7 seconds and E 1 foot at 9 seconds.
.SAT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 8 seconds. Patchy fog in the morning.
.SAT NIGHT...SE winds 5 to 10 kt, becoming E after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 7 seconds and E 1 foot at
9 seconds.
.SUN...N winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds.
.SUN NIGHT THROUGH MON NIGHT...SW winds 10 to 15 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and SE
2 ft at 8 seconds.

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.

$$

ANZ237-091500-
Block Island Sound-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 8 seconds and E 2 ft at 9 seconds.
.SAT...E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft
at 7 seconds and E 2 ft at 9 seconds.
.SAT NIGHT...SE winds around 5 kt, becoming NE after midnight.
Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and E 1 foot
at 9 seconds.
.SUN...NE winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 1 foot at
2 seconds.
.SUN NIGHT THROUGH MON NIGHT...SW winds 5 to 10 kt. Seas around
2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 7 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE
2 ft at 9 seconds.

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.

$$

ANZ230-091500-
Boston Harbor-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...S winds 5 to 10 kt. Waves 1 foot or less.
.SAT...SE winds 5 to 10 kt. Waves 1 foot or less, then around
2 ft in the afternoon.
.SAT NIGHT...SE winds 5 to 10 kt, becoming S after midnight.
Waves around 2 ft in the evening, then 1 foot or less.
.SUN...S winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft
in the afternoon.
.SUN NIGHT...S winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.MON AND MON NIGHT...SW winds 5 to 10 kt. Waves around 2 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Waves around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ236-091500-
Narragansett Bay-
1005 PM EDT Fri Aug 8 2025

.OVERNIGHT...SE winds around 5 kt. Waves 1 foot or less.
.SAT...E winds around 5 kt, becoming SE around 5 kt in the
afternoon. Waves 1 foot or less. Patchy fog in the morning.
.SAT NIGHT...S winds around 5 kt, becoming SW after midnight.
Waves 1 foot or less.
.SUN...SW winds 5 to 10 kt, becoming S in the afternoon. Waves
1 foot or less.
.SUN NIGHT THROUGH MON NIGHT...SW winds 5 to 10 kt. Waves around
2 ft.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 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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