Station List

National Weather Service Marine Forecast FZUS51 KBOX

FZUS51 KBOX 020604
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
104 AM EST Fri Jan 2 2026

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

ANZ200-021900
104 AM EST Fri Jan 2 2026

Synopsis for Massachusetts and Rhode Island coastal waters

Gale Force NW wind gusts continue into tonight with areas of light to moderate freezing spray developing as well. High pres builds S of the waters Fri. Another cold front moves across the region Fri night, followed by high pres for Sat. Low pres will likely then track well SE of the 40N/70W benchmark on Sun, followed by another high pres for Mon. Low pressure may return Tuesday.

ANZ250-021900
Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary
104 AM EST Fri Jan 2 2026

GALE WARNING IN EFFECT UNTIL 7 AM EST THIS MORNING

FREEZING SPRAY ADVISORY IN EFFECT UNTIL 1 PM EST THIS AFTERNOON

REST OF TONIGHT
W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. Wave Detail: W 7 ft at 6 seconds and E 2 ft at 12 seconds. Freezing spray.

FRI
W winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft, subsiding to 3 to 5 ft in the afternoon. Wave Detail: W 6 ft at 5 seconds and E 1 foot at 12 seconds, becoming W 4 ft at 5 seconds and E 1 foot at 12 seconds. Freezing spray.

FRI NIGHT
W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and E 1 foot at 11 seconds. Light freezing spray.

SAT
W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and E 1 foot at 11 seconds. Light freezing spray in the morning.

SAT NIGHT AND SUN
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at 11 seconds. A chance of snow. Vsby 1 to 3 NM.

SUN NIGHT
NW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and E 1 foot at 10 seconds. A chance of light freezing spray after midnight.

MON
NW winds 15 to 20 kt. Seas 2 to 4 ft. A chance of light freezing spray.

MON NIGHT
SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of snow.

TUE
SW winds 5 to 10 kt. Seas around 2 ft. A chance of snow.

TUE NIGHT
S winds 5 to 10 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.

ANZ251-021900
Massachusetts Bay and Ipswich Bay
104 AM EST Fri Jan 2 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING

FREEZING SPRAY ADVISORY IN EFFECT UNTIL 1 PM EST THIS AFTERNOON

REST OF TONIGHT
W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 5 seconds and E 1 foot at 12 seconds. Freezing spray.

FRI
W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at 12 seconds. Freezing spray in the morning.

FRI NIGHT
W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at 11 seconds. Light freezing spray.

SAT
W winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at 11 seconds. Light freezing spray in the morning.

SAT NIGHT AND SUN
NW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds and E 1 foot at 11 seconds. A chance of snow through the day.

SUN NIGHT
NW winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and NE 1 foot at 10 seconds. A chance of light freezing spray after midnight.

MON
NW winds 15 to 20 kt. Seas 2 to 3 ft.

MON NIGHT
SW winds 5 to 10 kt. Seas around 2 ft. A chance of snow.

TUE
SW winds 5 to 10 kt. Seas around 2 ft.

TUE NIGHT
W winds 5 to 10 kt. Seas around 2 ft. A chance of rain.

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

ANZ231-021900
Cape Cod Bay
104 AM EST Fri Jan 2 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING

REST OF TONIGHT
W winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and E 1 foot at 12 seconds. Light freezing spray.

FRI
W winds around 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and NE 1 foot at 11 seconds.

FRI NIGHT
W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at 11 seconds. Light freezing spray after midnight.

SAT
W winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at 11 seconds.

SAT NIGHT AND SUN
NW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: NW 2 ft at 4 seconds and E 1 foot at 11 seconds. A chance of snow.

SUN NIGHT
NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and NE 1 foot at 10 seconds. A chance of light freezing spray after midnight.

MON
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.

MON NIGHT
SW winds 5 to 10 kt. Seas around 2 ft. A chance of snow.

TUE
S winds 5 to 10 kt. Seas around 2 ft.

TUE NIGHT
S winds 5 to 10 kt. Seas 1 foot or less. A chance of rain.

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

ANZ254-021900
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm
104 AM EST Fri Jan 2 2026

GALE WARNING IN EFFECT UNTIL 7 AM EST THIS MORNING

REST OF TONIGHT
W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. Wave Detail: W 8 ft at 7 seconds and E 2 ft at 12 seconds. Light freezing spray.

FRI
W winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: W 6 ft at 7 seconds and E 2 ft at 12 seconds. Light freezing spray in the morning. A chance of snow showers in the morning.

FRI NIGHT
W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and E 1 foot at 11 seconds. Light freezing spray after midnight.

SAT
W winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 4 ft at 5 seconds and E 1 foot at 11 seconds. Light freezing spray in the morning.

SAT NIGHT AND SUN
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and E 1 foot at 11 seconds. A chance of snow. Vsby 1 to 3 NM.

SUN NIGHT
NW winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: NW 4 ft at 5 seconds and NE 2 ft at 11 seconds. A chance of light freezing spray after midnight.

MON
NW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of light freezing spray.

MON NIGHT
SW winds 5 to 10 kt. Seas 2 to 4 ft.

TUE AND TUE NIGHT
S winds 5 to 10 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.

ANZ255-021900
Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket
104 AM EST Fri Jan 2 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON

REST OF TONIGHT
W winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Wave Detail: W 9 ft at 8 seconds and E 2 ft at 13 seconds. Light freezing spray. A slight chance of snow showers.

FRI
W winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: W 6 ft at 7 seconds and E 2 ft at 12 seconds. Light freezing spray in the morning. A chance of snow showers in the morning with vsby 1 NM or less.

FRI NIGHT
W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at 7 seconds and E 1 foot at 12 seconds.

SAT
W winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: W 5 ft at 6 seconds and E 1 foot at 11 seconds.

SAT NIGHT AND SUN
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and E 1 foot at 11 seconds. A chance of snow through the day.

SUN NIGHT
NW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NW 5 ft at 5 seconds and E 1 foot at 11 seconds. A chance of light freezing spray after midnight.

MON
NW winds 15 to 20 kt. Seas 2 to 4 ft. A chance of light freezing spray.

MON NIGHT THROUGH TUE NIGHT
S winds 5 to 10 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.

ANZ256-021900
Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island
104 AM EST Fri Jan 2 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON

REST OF TONIGHT
W winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: W 7 ft at 7 seconds and E 1 foot at 13 seconds. Light freezing spray. A slight chance of snow showers.

FRI
W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at 7 seconds and E 1 foot at 13 seconds.

FRI NIGHT
W winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: W 5 ft at 6 seconds and E 1 foot at 12 seconds.

SAT
W winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: NW 4 ft at 5 seconds and E 1 foot at 11 seconds.

SAT NIGHT AND SUN
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 6 seconds and E 1 foot at 11 seconds. A chance of snow through the day.

SUN NIGHT
NW winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Seas 2 to 4 ft. Wave Detail: NW 4 ft at 4 seconds and E 1 foot at 10 seconds. A chance of light freezing spray after midnight.

MON THROUGH TUE NIGHT
S winds 15 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.

ANZ232-021900
Nantucket Sound
104 AM EST Fri Jan 2 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING

FREEZING SPRAY ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING

REST OF TONIGHT
W winds 20 to 25 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 5 seconds and E 1 foot at 13 seconds. Freezing spray.

FRI
W winds around 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and E 1 foot at 12 seconds.

FRI NIGHT
W winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at 12 seconds. Light freezing spray after midnight.

SAT
W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 4 seconds and E 1 foot at 11 seconds.

SAT NIGHT AND SUN
NW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and E 1 foot at 11 seconds. A chance of snow through the day.

SUN NIGHT
NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: NW 3 ft at 4 seconds and NE 1 foot at 10 seconds. A chance of light freezing spray after midnight.

MON THROUGH TUE NIGHT
S winds 15 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.

ANZ233-021900
Vineyard Sound
104 AM EST Fri Jan 2 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EST EARLY THIS MORNING

FREEZING SPRAY ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING

REST OF TONIGHT
W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 7 seconds and E 1 foot at 13 seconds. Freezing spray.

FRI
W winds around 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 6 seconds and E 1 foot at 13 seconds.

FRI NIGHT
W winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 6 seconds and E 1 foot at 12 seconds.

SAT
W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and E 1 foot at 11 seconds.

SAT NIGHT AND SUN
NW winds 10 to 15 kt. Seas around 2 ft. Wave Detail: W 2 ft at 5 seconds and E 1 foot at 11 seconds. A chance of snow through the day.

SUN NIGHT
NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 3 seconds and NE 1 foot at 9 seconds.

MON THROUGH TUE NIGHT
S winds 10 to 15 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.

ANZ234-021900
Buzzards Bay
104 AM EST Fri Jan 2 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EST EARLY THIS MORNING

FREEZING SPRAY ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING

REST OF TONIGHT
W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and E 1 foot at 13 seconds. Freezing spray.

FRI
W winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and E 1 foot at 13 seconds.

FRI NIGHT
W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 6 seconds and E 1 foot at 12 seconds.

SAT
W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: W 2 ft at 5 seconds and E 1 foot at 11 seconds.

SAT NIGHT AND SUN
NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft at 5 seconds and E 1 foot at 11 seconds. A chance of snow through the day.

SUN NIGHT
NW winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: NW 2 ft at 3 seconds and NE 1 foot at 9 seconds.

MON THROUGH TUE NIGHT
S winds 10 to 15 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.

ANZ235-021900
Rhode Island Sound
104 AM EST Fri Jan 2 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EST THIS MORNING

REST OF TONIGHT
W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: W 5 ft at 7 seconds and E 1 foot at 14 seconds. Light freezing spray. A slight chance of snow showers.

FRI
W winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 7 seconds and E 1 foot at 13 seconds.

FRI NIGHT
W winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: W 4 ft at 7 seconds and E 1 foot at 12 seconds. Light freezing spray after midnight.

SAT
W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and E 1 foot at 11 seconds.

SAT NIGHT
NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft at 7 seconds and E 1 foot at 11 seconds. A chance of snow after midnight.

SUN
N winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 7 seconds and E 1 foot at 11 seconds.

SUN NIGHT
NW winds 15 to 20 kt. Seas 2 to 3 ft. A chance of light freezing spray after midnight.

MON THROUGH TUE NIGHT
SE 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.

ANZ237-021900
Block Island Sound
104 AM EST Fri Jan 2 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM EST EARLY THIS MORNING

REST OF TONIGHT
W winds around 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and E 1 foot at 14 seconds.

FRI
W winds around 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and E 1 foot at 13 seconds.

FRI NIGHT
W winds around 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 5 seconds and E 1 foot at 12 seconds.

SAT
W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 3 ft. Wave Detail: W 2 ft at 5 seconds and E 1 foot at 12 seconds.

SAT NIGHT
NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W 2 ft at 6 seconds and SE 1 foot at 11 seconds. A chance of snow after midnight.

SUN
N winds 5 to 10 kt, becoming NW 10 to 15 kt in the afternoon. Seas around 2 ft. Wave Detail: W 2 ft at 7 seconds and SE 1 foot at 11 seconds.

SUN NIGHT
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of light freezing spray after midnight.

MON THROUGH TUE NIGHT
SE 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.

ANZ230-021900
Boston Harbor
104 AM EST Fri Jan 2 2026

REST OF TONIGHT
W winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft.

FRI
W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.

FRI NIGHT
W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.

SAT
W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.

SAT NIGHT
W winds 5 to 10 kt. Waves 1 foot or less. A chance of snow after midnight.

SUN AND SUN NIGHT
NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.

MON
NW winds 10 to 15 kt. Waves around 2 ft.

MON NIGHT
SW winds 5 to 10 kt. Waves 1 foot or less. A chance of snow.

TUE
SW winds 5 to 10 kt. Waves 1 foot or less.

TUE NIGHT
NW winds 5 to 10 kt. Waves 1 foot or less. 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.

ANZ236-021900
Narragansett Bay
104 AM EST Fri Jan 2 2026

REST OF TONIGHT
W winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft.

FRI
W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.

FRI NIGHT
W winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.

SAT
W winds 5 to 10 kt. Waves around 2 ft.

SAT NIGHT
NW winds 5 to 10 kt. Waves 1 foot or less. A chance of snow after midnight.

SUN AND SUN NIGHT
NW winds 10 to 15 kt. Waves around 2 ft.

MON THROUGH TUE
SW winds 5 to 10 kt. Waves around 2 ft.

TUE NIGHT
N winds 5 to 10 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.

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