National Weather Service Marine Forecast FZUS51 KBOX

FZUS51 KBOX 190805
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
404 AM EDT Sun Jul 19 2026

Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM

ANZ200-192100
404 AM EDT Sun Jul 19 2026

Synopsis for Massachusetts and Rhode Island coastal waters

A cold front sweeps through the New England waters early Sun morning, followed by high pres and very tranquil boating weather Sun and Mon. Unsettled weather in the form of showers and thunderstorms returns to the MA/RI waters late Tue and into Wed.

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ANZ250-192100
Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON

TODAY
NW winds 15 to 20 kt, diminishing to 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SE 3 ft at 6 seconds.

TONIGHT
NW winds 5 to 10 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: W 2 ft at 4 seconds and SE 1 foot at 7 seconds.

MON
W winds 5 to 10 kt, becoming S in the afternoon. Seas around 2 ft. Wave Detail: W 1 foot at 3 seconds and NE 1 foot at 5 seconds.

MON NIGHT
S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at 3 seconds.

TUE
S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 8 seconds.

TUE NIGHT
S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds and SW 2 ft at 4 seconds. Showers with a chance of tstms.

WED
S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Showers.

WED NIGHT
SW winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. A chance of showers.

THU
W winds 5 to 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers.

THU NIGHT
W winds around 5 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.

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ANZ251-192100
Massachusetts Bay and Ipswich Bay
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON

TODAY
NW winds 15 to 20 kt, diminishing to 10 to 15 kt this afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 foot at 6 seconds.

TONIGHT
NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NW 1 foot at 3 seconds and E 1 foot at 7 seconds.

MON
W winds 5 to 10 kt, becoming S in the afternoon. Seas 1 foot or less. Wave Detail: NW 1 foot at 3 seconds and NE 1 foot at 5 seconds.

MON NIGHT
S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 12 seconds.

TUE
S winds 10 to 15 kt, becoming SE 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and S 2 ft at 8 seconds.

TUE NIGHT
S winds around 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and E 1 foot at 11 seconds. Showers with a chance of tstms.

WED AND WED NIGHT
S winds 15 to 20 kt, becoming SW 10 to 15 kt. Gusts up to 25 kt. Seas 2 to 4 ft. Showers with a chance of tstms.

THU
W winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.

THU NIGHT
W winds around 5 kt. Seas around 2 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.

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ANZ231-192100
Cape Cod Bay
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON

TODAY
NW winds 15 to 20 kt, diminishing to 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and W 2 ft at 4 seconds.

TONIGHT
NW winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: NW 1 foot at 4 seconds and NE 1 foot at 6 seconds.

MON
NW winds around 5 kt, becoming S in the afternoon. Seas 1 foot or less. Wave Detail: N 1 foot at 5 seconds and S 1 foot at 7 seconds.

MON NIGHT
S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail: SW 1 foot at 4 seconds and NE 1 foot at 5 seconds.

TUE
S winds 5 to 10 kt, becoming SE 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and S 2 ft at 4 seconds.

TUE NIGHT
SE winds 10 to 15 kt, becoming S 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 1 foot at 11 seconds. Showers with a chance of tstms.

WED
SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. Showers likely.

WED NIGHT
SW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers.

THU
NW winds 5 to 10 kt. Seas around 2 ft. A chance of showers.

THU NIGHT
W winds around 5 kt. Seas around 2 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.

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ANZ254-192100
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

TODAY
W winds 15 to 20 kt, becoming NW 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 4 to 6 ft, subsiding to 2 to 4 ft this afternoon. Wave Detail: S 5 ft at 7 seconds and W 3 ft at 5 seconds, becoming NW 3 ft at 4 seconds and SE 3 ft at 7 seconds.

TONIGHT
SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: S 3 ft at 8 seconds and NW 2 ft at 4 seconds.

MON
NW winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and N 1 foot at 5 seconds.

MON NIGHT
S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and NW 1 foot at 4 seconds.

TUE
SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SE 2 ft at 8 seconds.

TUE NIGHT
SE winds 15 to 20 kt, becoming S 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: S 4 ft at 6 seconds and E 1 foot at 11 seconds, becoming S 6 ft at 6 seconds. Showers. A chance of tstms in the evening.

WED
S winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 9 ft. Showers.

WED NIGHT
SW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. A chance of showers.

THU
W winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers.

THU NIGHT
W winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers.

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.

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ANZ255-192100
Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

TODAY
W winds 15 to 20 kt with gusts up to 25 kt, diminishing to 10 to 15 kt this afternoon. Seas 4 to 6 ft. Wave Detail: W 6 ft at 6 seconds and E 1 foot at 10 seconds.

TONIGHT
W winds 5 to 10 kt, becoming N after midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and N 3 ft at 7 seconds.

MON
N winds around 5 kt, becoming SW in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and N 1 foot at 6 seconds.

MON NIGHT
S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and W 1 foot at 3 seconds.

TUE
SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 6 seconds and NW 1 foot at 3 seconds.

TUE NIGHT
S winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: S 5 ft at 6 seconds and E 1 foot at 11 seconds, becoming SW 7 ft at 7 seconds and E 2 ft at 6 seconds. Showers with a chance of tstms.

WED AND WED NIGHT
SW winds 25 to 30 kt, diminishing to 20 to 25 kt. Seas 7 to 10 ft. Showers.

THU
W winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers.

THU NIGHT
W winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers.

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.

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ANZ256-192100
Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

TODAY
NW winds 15 to 20 kt, becoming W 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 6 seconds and E 1 foot at 9 seconds.

TONIGHT
W winds around 10 kt, becoming N after midnight. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 7 seconds and NW 1 foot at 4 seconds.

MON
N winds around 5 kt, becoming SW in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and N 1 foot at 7 seconds.

MON NIGHT
S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SE 2 ft at 8 seconds.

TUE
SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds. A chance of showers in the afternoon.

TUE NIGHT
S winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft, building to 5 to 8 ft after midnight. Wave Detail: S 5 ft at 7 seconds, becoming SW 8 ft at 6 seconds and SE 4 ft at 8 seconds. Showers with a chance of tstms.

WED
SW winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to 11 ft. Showers likely.

WED NIGHT
W winds 20 to 25 kt with gusts up to 30 kt. Seas 7 to 10 ft. A chance of showers.

THU
W winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. A chance of showers.

THU NIGHT
NW winds 5 to 10 kt. Seas 4 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.

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ANZ232-192100
Nantucket Sound
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON

TODAY
NW winds 15 to 20 kt, diminishing to 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: W 3 ft at 4 seconds and SW 2 ft at 7 seconds.

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

MON
NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: NW 1 foot at 4 seconds and E 1 foot at 8 seconds.

MON NIGHT
S winds around 10 kt. Seas around 2 ft. Wave Detail: SW 1 foot at 3 seconds and S 1 foot at 8 seconds.

TUE
SE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds.

TUE NIGHT
S winds 20 to 25 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 5 seconds and E 1 foot at 11 seconds. Showers. A chance of tstms in the evening.

WED
SW winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to 6 ft. Showers likely.

WED NIGHT
SW winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to 6 ft. A chance of showers.

THU
W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers.

THU NIGHT
W winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.

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.

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ANZ233-192100
Vineyard Sound
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON

TODAY
W winds 10 to 15 kt. Gusts up to 20 kt this morning. Seas 2 to 4 ft. Wave Detail: W 4 ft at 6 seconds and SE 1 foot at 7 seconds.

TONIGHT
W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and W 1 foot at 4 seconds.

MON
NW winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 8 seconds and NW 1 foot at 4 seconds.

MON NIGHT
S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and SW 2 ft at 8 seconds.

TUE
S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SW 2 ft at 8 seconds.

TUE NIGHT
SE winds 15 to 20 kt, becoming S 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 5 seconds. Showers with a chance of tstms.

WED
SW winds 20 to 25 kt with gusts up to 35 kt. Seas 5 to 7 ft. Showers.

WED NIGHT
SW winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. A chance of showers.

THU
W winds 10 to 15 kt. Seas 3 to 5 ft. A chance of showers.

THU NIGHT
W winds 5 to 10 kt. Seas 2 to 3 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.

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ANZ234-192100
Buzzards Bay
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON

TODAY
NW winds 10 to 15 kt. Gusts up to 20 kt this morning. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 2 ft at 4 seconds.

TONIGHT
W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 7 seconds and W 1 foot at 4 seconds.

MON
NW winds around 5 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 1 foot at 4 seconds and E 1 foot at 6 seconds.

MON NIGHT
S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 8 seconds and SW 1 foot at 3 seconds.

TUE
S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and S 2 ft at 6 seconds.

TUE NIGHT
S winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 5 seconds. Showers with a chance of tstms.

WED
SW winds 25 to 30 kt with gusts up to 35 kt. Seas 4 to 6 ft. Showers.

WED NIGHT
SW winds 20 to 25 kt with gusts up to 35 kt. Seas 3 to 5 ft. A chance of showers.

THU
W winds around 10 kt. Seas 2 to 3 ft. A chance of showers.

THU NIGHT
W winds 5 to 10 kt. Seas 2 to 3 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.

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ANZ235-192100
Rhode Island Sound
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON

TODAY
W winds 10 to 15 kt. Gusts up to 20 kt this morning. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SE 1 foot at 13 seconds.

TONIGHT
W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and SE 2 ft at 8 seconds.

MON
N winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and E 2 ft at 8 seconds.

MON NIGHT
S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 1 foot at 4 seconds.

TUE
SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and E 1 foot at 12 seconds. A chance of showers in the afternoon.

TUE NIGHT
SE winds 15 to 20 kt, becoming S 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 4 ft, building to 5 to 7 ft after midnight. Wave Detail: S 4 ft at 5 seconds, becoming S 7 ft at 6 seconds. Showers with a chance of tstms.

WED
SW winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft. Showers likely.

WED NIGHT
W winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft. A chance of showers.

THU
W winds 10 to 15 kt. Seas 4 to 6 ft. A chance of showers.

THU NIGHT
W winds 5 to 10 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.

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ANZ237-192100
Block Island Sound
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON

TODAY
NW winds 10 to 15 kt. Gusts up to 20 kt this morning. Seas 2 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 2 ft at 4 seconds.

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

MON
N winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and W 1 foot at 3 seconds.

MON NIGHT
S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 8 seconds and SW 1 foot at 2 seconds.

TUE
SE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SW 1 foot at 3 seconds. A chance of showers in the afternoon.

TUE NIGHT
SE winds 10 to 15 kt, becoming S 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: SE 4 ft at 6 seconds and SW 1 foot at 3 seconds, becoming SW 5 ft at 5 seconds and E 2 ft at 6 seconds. Showers with a chance of tstms.

WED
SW winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Showers.

WED NIGHT
W winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. A chance of showers.

THU
W winds around 10 kt. Seas 3 to 5 ft. A chance of showers.

THU NIGHT
W winds 5 to 10 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.

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ANZ230-192100
Boston Harbor
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON

TODAY
NW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.

TONIGHT
NW winds 5 to 10 kt. Waves around 2 ft in the evening, then 1 foot or less.

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

MON NIGHT
S winds 5 to 10 kt. Waves 1 foot or less.

TUE
S winds 5 to 10 kt, becoming SE 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft.

TUE NIGHT
S winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft. Showers with a chance of tstms.

WED AND WED NIGHT
SW winds 10 to 15 kt, becoming W. Gusts up to 25 kt. Waves around 2 ft. Showers with a chance of tstms.

THU
W winds 5 to 10 kt. Waves 1 foot or less. A chance of showers.

THU NIGHT
W winds 5 to 10 kt. Waves 1 foot or less.

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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ANZ236-192100
Narragansett Bay
404 AM EDT Sun Jul 19 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON

TODAY
NW winds 10 to 15 kt. Waves 2 to 3 ft.

TONIGHT
NW winds 5 to 10 kt. Waves around 2 ft.

MON
NW winds around 5 kt, becoming S in the afternoon. Waves around 2 ft.

MON NIGHT
S winds 5 to 10 kt. Waves around 2 ft.

TUE
S winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. A chance of showers in the afternoon.

TUE NIGHT
S winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Gusts up to 25 kt. Waves 2 to 4 ft. Showers with a chance of tstms.

WED
SW winds 15 to 20 kt with gusts up to 30 kt. Waves 3 to 5 ft. Showers.

WED NIGHT
W winds 15 to 20 kt with gusts up to 25 kt. Waves 3 to 5 ft. A chance of showers and tstms.

THU
W winds 5 to 10 kt. Waves 2 to 3 ft. A chance of showers.

THU NIGHT
W winds 5 to 10 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.

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ANZ280-192100
Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM
404 AM EDT Sun Jul 19 2026

TODAY
W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: SW 4 ft at 6 seconds and E 2 ft at 7 seconds.

TONIGHT
NW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: W 3 ft at 5 seconds and S 2 ft at 8 seconds.

MON
W winds 5 to 10 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: NW 2 ft at 4 seconds and SE 2 ft at 7 seconds.

MON NIGHT
S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and W 2 ft at 3 seconds.

TUE
S 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 S 3 ft at 7 seconds.

TUE NIGHT
S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 7 seconds and SW 2 ft at 4 seconds. Showers with a chance of tstms.

WED
S winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 9 ft. Showers likely.

WED NIGHT
SW winds 20 to 25 kt with gusts up to 35 kt. Seas 7 to 10 ft. A chance of showers.

THU
W winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. A chance of showers.

THU NIGHT
W winds 5 to 10 kt. Seas 4 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.

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ANZ281-192100
Ocean Waters from Provincetown to Nantucket from 20 to 60 NM
404 AM EDT Sun Jul 19 2026

TODAY
W winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: W 6 ft at 6 seconds and SE 1 foot at 8 seconds. Isolated showers this morning.

TONIGHT
W winds 5 to 10 kt with gusts up to 20 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and NW 2 ft at 5 seconds.

MON
NW winds 5 to 10 kt, becoming W in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and N 2 ft at 6 seconds.

MON NIGHT
S winds 5 to 10 kt. Seas around 3 ft. Wave Detail: S 3 ft at 8 seconds and NW 1 foot at 4 seconds.

TUE
SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds and NW 1 foot at 3 seconds.

TUE NIGHT
SE winds 15 to 20 kt, becoming S 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 4 ft, building to 4 to 6 ft after midnight. Wave Detail: SE 4 ft at 6 seconds, becoming S 6 ft at 6 seconds. Showers with a chance of tstms.

WED
S winds 20 to 25 kt with gusts up to 35 kt. Seas 7 to 10 ft. Showers with a chance of tstms.

WED NIGHT
SW winds 20 to 25 kt with gusts up to 35 kt. Seas 8 to 11 ft. Showers likely.

THU
SW winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. A chance of showers.

THU NIGHT
W winds 5 to 10 kt. Seas 5 to 6 ft. A chance of showers.

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.

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ANZ282-192100
Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM
404 AM EDT Sun Jul 19 2026

TODAY
W winds 15 to 20 kt with gusts up to 25 kt, becoming NW 10 to 15 kt this afternoon. Seas 5 to 6 ft. Wave Detail: W 6 ft at 7 seconds and E 1 foot at 8 seconds. Scattered showers this morning.

TONIGHT
SW winds 5 to 10 kt, becoming NW after midnight. Seas 4 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and N 1 foot at 5 seconds.

MON
NE winds around 5 kt, becoming E around 5 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and N 1 foot at 6 seconds.

MON NIGHT
SE winds around 5 kt. Seas around 3 ft. Wave Detail: S 3 ft at 8 seconds and N 1 foot at 6 seconds.

TUE
SE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 3 ft at 8 seconds.

TUE NIGHT
S winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 4 ft, building to 5 to 7 ft after midnight. Wave Detail: SE 4 ft at 7 seconds, becoming S 7 ft at 8 seconds and E 3 ft at 8 seconds. Showers with a chance of tstms.

WED AND WED NIGHT
SW winds 20 to 25 kt with gusts up to 35 kt. Seas 8 to 11 ft. Showers with a chance of tstms.

THU
W winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft. A chance of showers.

THU NIGHT
NE winds 5 to 10 kt. Seas 5 to 6 ft. A chance of showers.

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.

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ANZ283-192100
Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM
404 AM EDT Sun Jul 19 2026

TODAY
W winds 15 to 20 kt, becoming NW 10 to 15 kt this afternoon. Gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SW 6 ft at 7 seconds and NW 4 ft at 4 seconds.

TONIGHT
W winds around 10 kt, becoming NW after midnight. Seas 4 to 5 ft. Wave Detail: SW 5 ft at 7 seconds and NW 1 foot at 4 seconds.

MON
NE winds 5 to 10 kt, becoming SE in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and N 2 ft at 5 seconds.

MON NIGHT
S winds 5 to 10 kt. Seas around 3 ft. Wave Detail: S 3 ft at 8 seconds and NW 1 foot at 3 seconds.

TUE
SE winds 10 to 15 kt with gusts up to 25 kt. Seas around 3 ft. Wave Detail: S 3 ft at 7 seconds and SE 3 ft at 8 seconds. A chance of showers in the afternoon.

TUE NIGHT
S winds 15 to 20 kt, becoming SW 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: S 5 ft at 6 seconds, becoming W 7 ft at 5 seconds and S 7 ft at 9 seconds. Showers with a chance of tstms.

WED
SW winds around 25 kt with gusts up to 35 kt. Seas 8 to 11 ft. Showers likely with a chance of tstms.

WED NIGHT
SW winds 20 to 25 kt with gusts up to 35 kt. Seas 7 to 10 ft. A chance of showers.

THU
W winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft. A chance of showers.

THU NIGHT
N winds 5 to 10 kt. Seas 4 to 6 ft. A chance of showers.

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.

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