National Weather Service Marine Forecast FZUS51 KBOX

FZUS51 KBOX 270125
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
924 PM EDT Fri Jul 26 2024

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

ANZ200-271400
924 PM EDT Fri Jul 26 2024

Synopsis for Massachusetts and Rhode Island coastal waters

High pressure will support relatively calm conditions across the coastal waters through most of the weekend. By Sunday evening and early Monday an area of low-pressure may move over the coastal waters.

---

ANZ250-271400
Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary
924 PM EDT Fri Jul 26 2024

TONIGHT
SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and NE 1 foot at 5 seconds.

SAT
NW winds around 5 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: NW 1 foot at 2 seconds and NE 1 foot at 5 seconds.

SAT NIGHT
S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 1 foot at 2 seconds and NE 1 foot at 4 seconds.

SUN
SE winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: W 1 foot at 2 seconds and NE 1 foot at 3 seconds, becoming W 1 foot at 2 seconds and E 1 foot at 3 seconds.

SUN NIGHT
SE winds 5 to 10 kt, becoming E after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and SE 1 foot at 3 seconds. A chance of showers after midnight.

MON AND MON NIGHT
S winds around 10 kt. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and E 1 foot at 3 seconds.

TUE THROUGH WED
S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.

WED NIGHT
S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers.

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.

---

ANZ251-271400
Massachusetts Bay and Ipswich Bay
924 PM EDT Fri Jul 26 2024

TONIGHT
SW winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less. Wave Detail: W 1 foot at 2 seconds and NE 1 foot at 4 seconds.

SAT
NW winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. Wave Detail: W 1 foot at 2 seconds and NE 1 foot at 5 seconds.

SAT NIGHT
S winds 5 to 10 kt, becoming SW after midnight. Seas 1 foot or less. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 9 seconds.

SUN
SE winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 1 foot or less. Wave Detail: E 1 foot at 3 seconds and SE 1 foot at 9 seconds.

SUN NIGHT AND MON
E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and S 1 foot at 3 seconds.

MON NIGHT
S winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and S 1 foot at 3 seconds. A chance of showers.

TUE AND TUE NIGHT
S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers.

WED
S winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft.

WED NIGHT
S winds 10 to 15 kt. Seas around 2 ft. A chance of showers.

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.

---

ANZ231-271400
Cape Cod Bay
924 PM EDT Fri Jul 26 2024

TONIGHT
SW winds 5 to 10 kt, becoming W after midnight. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at 8 seconds.

SAT
N winds around 5 kt, becoming E in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 4 seconds and SE 1 foot at 8 seconds.

SAT NIGHT
S winds around 5 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 2 seconds and E 1 foot at 4 seconds.

SUN
SE winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas 1 foot or less. Wave Detail: NE 1 foot at 3 seconds and SE 1 foot at 9 seconds.

SUN NIGHT
E winds 5 to 10 kt, becoming NE after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: E 1 foot at 2 seconds and SE 1 foot at 9 seconds. A chance of showers after midnight.

MON
NE winds 5 to 10 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and S 1 foot at 2 seconds. A chance of showers in the morning.

MON NIGHT
S winds around 10 kt. Seas around 2 ft.

TUE THROUGH WED NIGHT
S winds 10 to 15 kt with gusts up to 20 kt. Seas 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.

---

ANZ254-271400
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm
924 PM EDT Fri Jul 26 2024

TONIGHT
W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and N 1 foot at 5 seconds.

SAT
N winds around 5 kt, becoming E around 5 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and N 1 foot at 4 seconds.

SAT NIGHT
S winds around 5 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at 4 seconds.

SUN
SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 9 seconds and N 1 foot at 3 seconds.

SUN NIGHT
NE winds around 10 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and E 1 foot at 3 seconds. A chance of showers after midnight.

MON
NE winds around 10 kt, becoming S in the afternoon. Seas 3 to 5 ft. Wave Detail: SE 4 ft at 8 seconds and S 2 ft at 3 seconds. A chance of showers in the morning.

MON NIGHT
S winds around 10 kt. Seas 3 to 4 ft.

TUE THROUGH WED NIGHT
S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft.

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

---

ANZ255-271400
Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket
924 PM EDT Fri Jul 26 2024

TONIGHT
SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 4 seconds.

SAT
N winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and NE 1 foot at 5 seconds.

SAT NIGHT
S winds around 5 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and E 1 foot at 5 seconds.

SUN
E winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 3 seconds and S 2 ft at 9 seconds.

SUN NIGHT
NE winds around 10 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and E 2 ft at 3 seconds. A chance of showers.

MON
NE winds around 10 kt, becoming S in the afternoon. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and NE 2 ft at 3 seconds. A chance of showers in the morning.

MON NIGHT
S winds 10 to 15 kt. Seas 3 to 4 ft.

TUE THROUGH WED
S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft.

WED NIGHT
S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers.

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.

---

ANZ256-271400
Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island
924 PM EDT Fri Jul 26 2024

TONIGHT
SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds.

SAT
NE winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds.

SAT NIGHT
SW winds around 5 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SE 1 foot at 12 seconds.

SUN
E winds around 5 kt, increasing to 5 to 10 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and SE 1 foot at 4 seconds.

SUN NIGHT
E winds around 10 kt, becoming NE after midnight. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 9 seconds and E 2 ft at 3 seconds. A chance of showers.

MON
NE winds around 10 kt, becoming S in the afternoon. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds and NE 2 ft at 3 seconds. A chance of showers.

MON NIGHT
S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers.

TUE
S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers.

TUE NIGHT AND WED
S winds 10 to 15 kt. Gusts up to 20 kt. Seas 3 to 4 ft.

WED NIGHT
S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers.

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.

---

ANZ232-271400
Nantucket Sound
924 PM EDT Fri Jul 26 2024

TONIGHT
SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 4 seconds.

SAT
N winds around 5 kt, becoming SE in the afternoon. Seas 1 foot or less. Wave Detail: W 1 foot at 4 seconds and NE 1 foot at 5 seconds.

SAT NIGHT
S winds around 5 kt. Seas 1 foot or less. Wave Detail: S 1 foot at 4 seconds and E 1 foot at 5 seconds.

SUN
SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: E 1 foot at 2 seconds and S 1 foot at 4 seconds.

SUN NIGHT
E winds around 10 kt, becoming NE after midnight. Seas 2 to 3 ft. Wave Detail: E 1 foot at 3 seconds and SE 1 foot at 9 seconds. A chance of showers after midnight.

MON
NE winds around 10 kt, becoming S with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at 9 seconds. A chance of showers in the morning.

MON NIGHT
S winds 10 to 15 kt. Seas 2 to 3 ft.

TUE THROUGH WED NIGHT
S 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.

---

ANZ233-271400
Vineyard Sound
924 PM EDT Fri Jul 26 2024

TONIGHT
SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and NE 1 foot at 4 seconds.

SAT
N winds around 5 kt, becoming S in the afternoon. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 2 ft at 6 seconds and SE 1 foot at 12 seconds, becoming SW 1 foot at 5 seconds and S 1 foot at 8 seconds.

SAT NIGHT
S winds around 5 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 5 seconds and SE 1 foot at 8 seconds.

SUN
SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and S 1 foot at 8 seconds.

SUN NIGHT
E winds 5 to 10 kt, becoming NE after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: SE 1 foot at 4 seconds and S 1 foot at 9 seconds, becoming NE 1 foot at 3 seconds and SE 1 foot at 9 seconds. A chance of showers after midnight.

MON
NE winds around 10 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds. A chance of showers in the morning.

MON NIGHT
S winds 10 to 15 kt. Seas around 2 ft.

TUE THROUGH WED
S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.

WED NIGHT
S winds 10 to 15 kt. Seas around 2 ft. A chance of showers.

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.

---

ANZ234-271400
Buzzards Bay
924 PM EDT Fri Jul 26 2024

TONIGHT
SW winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft this evening, then 1 foot or less. Wave Detail: NE 1 foot at 5 seconds and SW 1 foot at 6 seconds.

SAT
N winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. Wave Detail: SW 1 foot at 5 seconds and NE 1 foot at 5 seconds.

SAT NIGHT
SW winds around 5 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and SE 1 foot at 8 seconds.

SUN
SE winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: E 1 foot at 3 seconds and S 1 foot at 4 seconds.

SUN NIGHT
E winds 5 to 10 kt, becoming NE after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 9 seconds, becoming E 1 foot at 2 seconds and SE 1 foot at 9 seconds. A chance of showers after midnight.

MON
N winds around 10 kt, becoming SW with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and NE 1 foot at 2 seconds. A chance of showers in the morning.

MON NIGHT
S winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft.

TUE THROUGH WED
S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.

WED NIGHT
SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers.

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.

---

ANZ235-271400
Rhode Island Sound
924 PM EDT Fri Jul 26 2024

TONIGHT
SW winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 3 seconds.

SAT
N winds around 5 kt, becoming S around 5 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SE 1 foot at 12 seconds.

SAT NIGHT
SW winds around 5 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SE 1 foot at 12 seconds.

SUN
E winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and S 1 foot at 5 seconds.

SUN NIGHT
E winds 5 to 10 kt, becoming NE after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and SE 2 ft at 9 seconds. A chance of showers.

MON
NE winds around 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 3 seconds. A chance of showers.

MON NIGHT
S winds 10 to 15 kt. Seas around 3 ft. A chance of showers.

TUE
S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A chance of showers.

TUE NIGHT AND WED
S winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft.

WED NIGHT
S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.

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.

---

ANZ237-271400
Block Island Sound
924 PM EDT Fri Jul 26 2024

TONIGHT
W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and W 1 foot at 3 seconds.

SAT
NE winds around 5 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and W 1 foot at 4 seconds.

SAT NIGHT
S winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. Wave Detail: S 1 foot at 5 seconds and SE 1 foot at 8 seconds.

SUN
NE winds around 5 kt, becoming SE in the afternoon. Seas around 2 ft. Wave Detail: S 1 foot at 5 seconds and SE 1 foot at 8 seconds.

SUN NIGHT
SE winds 5 to 10 kt, becoming NE after midnight. Seas 2 to 3 ft. Wave Detail: SE 1 foot at 3 seconds and SE 1 foot at 9 seconds. A chance of showers after midnight.

MON
NE winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and S 1 foot at 4 seconds. A chance of showers.

MON NIGHT
S winds around 10 kt. Seas 2 to 3 ft. A chance of showers.

TUE
S winds around 10 kt with gusts up to 20 kt. Seas around 3 ft. A chance of showers.

TUE NIGHT AND WED
S winds 10 to 15 kt. Gusts up to 20 kt. Seas 2 to 3 ft.

WED NIGHT
SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.

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.

---

ANZ230-271400
Boston Harbor
924 PM EDT Fri Jul 26 2024

TONIGHT
SW winds 5 to 10 kt, becoming NW after midnight. Waves 1 foot or less.

SAT
N winds around 5 kt, becoming E in the afternoon. Waves 1 foot or less.

SAT NIGHT
S winds 5 to 10 kt, becoming SW after midnight. Waves 1 foot or less.

SUN
SE winds around 5 kt, becoming E in the afternoon. Waves 1 foot or less.

SUN NIGHT
SE winds 5 to 10 kt. Waves 1 foot or less.

MON AND MON NIGHT
S winds 5 to 10 kt. Waves around 2 ft. A chance of showers.

TUE THROUGH WED NIGHT
S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers.

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.

---

ANZ236-271400
Narragansett Bay
924 PM EDT Fri Jul 26 2024

TONIGHT
W winds 5 to 10 kt, becoming N after midnight. Waves around 2 ft this evening, then 1 foot or less.

SAT
N winds around 5 kt, becoming S in the afternoon. Waves 1 foot or less.

SAT NIGHT
S winds 5 to 10 kt, becoming SW after midnight. Waves 1 foot or less.

SUN
NE winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less.

SUN NIGHT
SE winds 5 to 10 kt, becoming NE after midnight. Waves 2 to 3 ft.

MON
NE winds 5 to 10 kt, becoming S in the afternoon. Waves 2 to 3 ft. A chance of showers in the afternoon.

MON NIGHT
S winds around 10 kt. Waves 2 to 3 ft. A chance of showers.

TUE
S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers.

TUE NIGHT AND WED
S winds 10 to 15 kt. Gusts up to 20 kt. Waves 2 to 3 ft.

WED NIGHT
SW winds 10 to 15 kt. Waves 2 to 3 ft. A chance of showers.

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.

---

For the latest updates...please visit our webpage at www.weather.gov/boston

You can follow us on Facebook at www.facebook.com/NWSBoston

You can follow us on Twitter at @NWSBoston