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ANZ230 Boston HarborExpires:202609291800;;227395 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ230-291800- Boston Harbor- 105 AM EDT Tue Sep 29 2026 .REST OF TONIGHT...NW winds 10 to 15 kt. Waves around 2 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .TUE...NW winds 5 to 10 kt, diminishing to around 5 kt in the afternoon. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. Patchy fog in the morning. .TUE NIGHT...NW winds around 5 kt. Waves 1 foot or less. .WED...NW winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt. Waves around 2 ft. .FRI...SW winds 5 to 10 kt. Waves 1 foot or less. .FRI NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SAT AND SAT NIGHT...N winds 5 to 10 kt, becoming E. Waves 1 foot or less. 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. $$
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ANZ231 Cape Cod BayExpires:202609291800;;227386 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ231-291800- Cape Cod Bay- 105 AM EDT Tue Sep 29 2026 .REST OF TONIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 7 seconds and S 1 foot at 7 seconds. Patchy fog. Vsby 1 NM or less. .TUE...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 6 seconds and E 3 ft at 9 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .TUE NIGHT...N winds around 5 kt. Seas 2 to 3 ft. Wave Detail: N 2 ft at 6 seconds and E 2 ft at 9 seconds. .WED...N winds around 5 kt, becoming E in the afternoon. Seas around 2 ft. Wave Detail: N 1 foot at 5 seconds and S 1 foot at 7 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 8 seconds. .FRI...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and E 1 foot at 4 seconds. .FRI NIGHT AND SAT...NW winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$
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ANZ232 Nantucket SoundExpires:202609291800;;227390 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ232-291800- Nantucket Sound- 105 AM EDT Tue Sep 29 2026 .REST OF TONIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and N 2 ft at 8 seconds. Patchy fog. Vsby 1 NM or less. .TUE...W winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and E 2 ft at 8 seconds. Patchy fog in the morning with vsby 1 NM or less. .TUE NIGHT...NW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 6 seconds and E 2 ft at 9 seconds. .WED...N winds around 5 kt, becoming SW around 5 kt in the afternoon. Seas around 2 ft. Wave Detail: NW 1 foot at 5 seconds and SW 1 foot at 6 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. .FRI...SW 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 E 1 foot at 8 seconds. .FRI NIGHT AND SAT...W winds 10 to 15 kt, becoming N. Seas around 2 ft. A chance of showers. .SAT NIGHT...NE 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. $$
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ANZ233 Vinyard SoundExpires:202609291800;;227391 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ233-291800- Vineyard Sound- 105 AM EDT Tue Sep 29 2026 .REST OF TONIGHT...NW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and N 2 ft at 7 seconds. Patchy fog. Vsby 1 to 3 NM. .TUE...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and NW 1 foot at 3 seconds. .TUE NIGHT...NW winds around 5 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and NE 2 ft at 9 seconds. .WED...N winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. Wave Detail: SW 1 foot at 5 seconds and N 1 foot at 6 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 5 seconds and NE 1 foot at 4 seconds. .FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and W 1 foot at 2 seconds. .FRI NIGHT AND SAT...NW winds 5 to 10 kt, becoming NE 10 to 15 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT...NE winds 5 to 10 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$
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ANZ234 Buzzards BayExpires:202609291800;;227392 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ234-291800- Buzzards Bay- 105 AM EDT Tue Sep 29 2026 .REST OF TONIGHT...NW winds around 10 kt. Seas around 2 ft. Wave Detail: N 2 ft at 6 seconds and SW 2 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .TUE...W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: NE 2 ft at 6 seconds and SW 2 ft at 7 seconds. .TUE NIGHT...NW winds around 5 kt. Seas 1 foot or less. Wave Detail: N 1 foot at 5 seconds and SW 1 foot at 6 seconds. .WED...N winds around 5 kt, becoming SW in the afternoon. Seas 1 foot or less. Wave Detail: SW 1 foot at 5 seconds and N 1 foot at 7 seconds. .WED NIGHT THROUGH THU NIGHT...SW 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 NE 1 foot at 4 seconds. .FRI...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 SW 2 ft at 6 seconds. .FRI NIGHT AND SAT...NW winds 5 to 10 kt, becoming NE 10 to 15 kt. Seas around 2 ft. A chance of showers. .SAT NIGHT...NE winds 5 to 10 kt. Seas 1 foot or less. 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. $$
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ANZ235 Rhode Island SoundExpires:202609291800;;227393 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ235-291800- Rhode Island Sound- 105 AM EDT Tue Sep 29 2026 .REST OF TONIGHT...NW winds around 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and N 1 foot at 4 seconds. Patchy fog. Vsby 1 to 3 NM. .TUE...W winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and N 2 ft at 4 seconds. .TUE NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and NE 2 ft at 8 seconds. .WED...N winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: N 2 ft at 6 seconds and S 1 foot at 7 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 6 seconds and SW 2 ft at 3 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and W 1 foot at 3 seconds. .FRI NIGHT AND SAT...NW winds 10 to 15 kt, becoming NE. Seas 2 to 3 ft. A chance of showers. .SAT NIGHT...NE winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$
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ANZ236 Narragansett BayExpires:202609291800;;227396 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ236-291800- Narragansett Bay- 105 AM EDT Tue Sep 29 2026 .REST OF TONIGHT...NW winds 5 to 10 kt. Waves 2 to 3 ft. Patchy fog. Vsby 1 to 3 NM. .TUE...W winds 5 to 10 kt. Waves around 2 ft. .TUE NIGHT...W winds around 5 kt, becoming N after midnight. Waves around 2 ft in the evening, then 1 foot or less. .WED...NW winds around 5 kt, becoming S in the afternoon. Waves 1 foot or less. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .FRI...SW winds 5 to 10 kt. Waves around 2 ft. .FRI NIGHT...NW winds 5 to 10 kt. Waves around 2 ft. A chance of showers. .SAT AND SAT NIGHT...NE winds 5 to 10 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. $$
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ANZ237 Block Island SoundExpires:202609291800;;227394 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ237-291800- Block Island Sound- 105 AM EDT Tue Sep 29 2026 .REST OF TONIGHT...NW winds around 10 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds and E 2 ft at 9 seconds. Patchy fog. .TUE...W winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and E 2 ft at 9 seconds. .TUE NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Wave Detail: NW 2 ft at 7 seconds and NE 1 foot at 4 seconds. .WED...N winds around 5 kt, becoming SW in the afternoon. Seas around 2 ft. Wave Detail: NW 2 ft at 7 seconds and SE 2 ft at 9 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and SW 2 ft at 3 seconds. .FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and SE 1 foot at 2 seconds. .FRI NIGHT AND SAT...NW winds 5 to 10 kt, becoming NE 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. .SAT NIGHT...E winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$
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ANZ250 Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine SanctuaryExpires:202609291800;;227384 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ250-291800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 105 AM EDT Tue Sep 29 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .REST OF TONIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 6 ft. Wave Detail: N 5 ft at 6 seconds and SE 2 ft at 7 seconds. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .TUE...NW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: N 4 ft at 6 seconds and SE 2 ft at 7 seconds. Patchy fog in the morning with vsby 1 NM or less. .TUE NIGHT...NW winds around 5 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and N 2 ft at 5 seconds. .WED...NW winds around 5 kt, becoming SW in the afternoon. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and N 1 foot at 2 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 3 ft at 9 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and E 2 ft at 8 seconds. .FRI NIGHT...NW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers. .SAT AND SAT NIGHT...N winds 5 to 10 kt, becoming E. 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. $$
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ANZ251 Massachusetts Bay and Ipswich BayExpires:202609291800;;227385 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ251-291800- Massachusetts Bay and Ipswich Bay- 105 AM EDT Tue Sep 29 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .REST OF TONIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: NE 5 ft at 7 seconds and SE 1 foot at 8 seconds. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .TUE...NW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: N 4 ft at 7 seconds and SE 1 foot at 8 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .TUE NIGHT...NW winds around 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and SW 2 ft at 4 seconds. .WED...NW winds around 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and N 1 foot at 5 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and E 3 ft at 9 seconds. .FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds. .FRI NIGHT...NW winds 5 to 10 kt. Seas around 2 ft. A chance of showers. .SAT AND SAT NIGHT...N winds 5 to 10 kt, becoming E. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$
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ANZ254 Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NMExpires:202609291800;;227387 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ254-291800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- 105 AM EDT Tue Sep 29 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING... .REST OF TONIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: NE 5 ft at 7 seconds and S 3 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .TUE...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW 5 to 10 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 7 seconds and S 3 ft at 7 seconds. Patchy fog in the morning with vsby 1 NM or less. .TUE NIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and N 2 ft at 5 seconds. .WED...NW winds around 5 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 9 seconds and N 1 foot at 5 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and E 3 ft at 9 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and E 2 ft at 8 seconds. .FRI NIGHT AND SAT...W winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .SAT NIGHT...NE 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. $$
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ANZ255 Coastal waters extending out to 25 NM south of Martha’s Vineyard and NantucketExpires:202609291800;;227388 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ255-291800- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- 105 AM EDT Tue Sep 29 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT EARLY THIS MORNING... .REST OF TONIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: S 4 ft at 7 seconds and E 3 ft at 8 seconds. Patchy fog. Vsby 1 NM or less. .TUE...W winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: SW 4 ft at 7 seconds and E 3 ft at 8 seconds. .TUE NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 4 ft. Wave Detail: N 3 ft at 5 seconds and E 3 ft at 9 seconds. .WED...N winds around 5 kt, becoming SW around 5 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and E 2 ft at 9 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 9 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: W 4 ft at 5 seconds and E 1 foot at 5 seconds. .FRI NIGHT AND SAT...W winds 10 to 15 kt, becoming NE. Seas 2 to 3 ft. A chance of showers. .SAT NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$
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ANZ256 Coastal waters from Montauk NY to Martha’s Vineyard extending out to 20 NM south of Block IslandExpires:202609291800;;227389 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ256-291800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 105 AM EDT Tue Sep 29 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT EARLY THIS MORNING... .REST OF TONIGHT...NW winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: S 4 ft at 7 seconds and N 2 ft at 4 seconds. Patchy fog. Vsby 1 to 3 NM. .TUE...W winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and NW 2 ft at 3 seconds. .TUE NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 6 seconds and NE 2 ft at 8 seconds. .WED...N winds around 5 kt, becoming SW in the afternoon. Seas 2 to 3 ft. Wave Detail: E 2 ft at 9 seconds and NW 1 foot at 3 seconds. .WED NIGHT THROUGH THU NIGHT...SW winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and E 2 ft at 9 seconds. .FRI...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at 5 seconds. .FRI NIGHT AND SAT...W winds 10 to 15 kt, becoming NE with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers. .SAT NIGHT...E winds 10 to 15 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. $$
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ANZ230 Boston HarborExpires:202609291800;;227395 FZUS51 KBOX 290505 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Tue Sep 29 2026 Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM ANZ230-291800- Boston Harbor- 105 AM EDT Tue Sep 29 2026 .REST OF TONIGHT...NW winds 10 to 15 kt. Waves around 2 ft. Patchy fog. A slight chance of showers. Vsby 1 NM or less. .TUE...NW winds 5 to 10 kt, diminishing to around 5 kt in the afternoon. Waves 1 foot or less, except 2 to 4 ft at the outer harbor entrance. Patchy fog in the morning. .TUE NIGHT...NW winds around 5 kt. Waves 1 foot or less. .WED...NW winds around 5 kt, becoming SE in the afternoon. Waves 1 foot or less. .WED NIGHT THROUGH THU NIGHT...SW winds 10 to 15 kt. Waves around 2 ft. .FRI...SW winds 5 to 10 kt. Waves 1 foot or less. .FRI NIGHT...NW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. .SAT AND SAT NIGHT...N winds 5 to 10 kt, becoming E. Waves 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$
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