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Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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058 FZUS51 KBOX 170504 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 104 AM EDT Wed Jul 17 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-171800- 104 AM EDT Wed Jul 17 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... Persistent SW winds gusting 20-25 knots through Wed with low stratus and fog. Thunderstorms may approach the waters late today, and again on Wed afternoon. A cold front sweeps through Thu. High pressure will bring light winds and dry conditions into the weekend. $$ ANZ250-171800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 104 AM EDT Wed Jul 17 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and SE 2 ft at 8 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds around 10 kt, becoming S with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 8 seconds and SW 2 ft at 3 seconds. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 8 seconds and SW 2 ft at 3 seconds. .THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and W 1 foot at 3 seconds. A chance of showers in the morning. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and W 1 foot at 3 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and NW 1 foot at 3 seconds. .SAT THROUGH SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-171800- Massachusetts Bay and Ipswich Bay- 104 AM EDT Wed Jul 17 2024 .REST OF TONIGHT...W winds 10 to 15 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and SW 1 foot at 3 seconds. .WED...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SE 2 ft at 7 seconds and SW 1 foot at 2 seconds. .WED NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming SW 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and SW 1 foot at 3 seconds. .THU...SW 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 SE 1 foot at 7 seconds, becoming W 1 foot at 2 seconds and SE 1 foot at 8 seconds. A chance of showers in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 1 foot or less, then around 2 ft after midnight. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at 9 seconds, becoming NW 1 foot at 2 seconds and SE 1 foot at 9 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 6 seconds and NW 1 foot at 2 seconds. .SAT THROUGH SUN NIGHT...W 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. $$ ANZ231-171800- Cape Cod Bay- 104 AM EDT Wed Jul 17 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. .WED...SW winds around 5 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. A chance of showers. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 9 seconds and SW 1 foot at 2 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and NW 1 foot at 3 seconds. .SAT THROUGH SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-171800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 104 AM EDT Wed Jul 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .REST OF TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 4 seconds. Patchy dense fog. Vsby 1 NM or less. .WED...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and W 1 foot at 4 seconds. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 8 seconds and W 1 foot at 4 seconds. .THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 4 to 6 ft. Wave Detail: S 5 ft at 9 seconds and W 1 foot at 3 seconds. A chance of showers. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and W 1 foot at 3 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 8 seconds and NW 1 foot at 3 seconds. .SAT THROUGH SUN NIGHT...SW 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. $$ ANZ255-171800- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 104 AM EDT Wed Jul 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .REST OF TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 7 seconds and SW 1 foot at 3 seconds. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and SW 1 foot at 3 seconds. A chance of showers after midnight. .THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and SW 1 foot at 3 seconds. A chance of showers. .THU NIGHT...SW winds around 10 kt, becoming NW after midnight. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and SW 1 foot at 2 seconds. .FRI...N winds 5 to 10 kt, becoming NE in the afternoon. Seas 3 to 5 ft. Wave Detail: S 4 ft at 8 seconds. .FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. .SAT THROUGH SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-171800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 104 AM EDT Wed Jul 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .REST OF TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: S 5 ft at 7 seconds. .WED...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to 6 ft. Wave Detail: S 5 ft at 7 seconds. .WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: S 6 ft at 8 seconds. A chance of showers after midnight with vsby 1 to 3 NM. .THU...W winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 5 to 6 ft. Wave Detail: S 6 ft at 8 seconds. A chance of showers. .THU NIGHT...W winds around 10 kt, becoming NW after midnight. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 8 seconds. .SAT THROUGH SUN NIGHT...W 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. $$ ANZ232-171800- Nantucket Sound- 104 AM EDT Wed Jul 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 3 seconds and S 2 ft at 7 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at 7 seconds. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and S 2 ft at 8 seconds. .THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 9 seconds. A chance of showers. .THU NIGHT...SW winds around 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 8 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and NW 1 foot at 3 seconds. .SAT THROUGH SUN NIGHT...W winds 10 to 15 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-171800- Vineyard Sound- 104 AM EDT Wed Jul 17 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds and SW 1 foot at 4 seconds. .WED...SW winds around 5 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 2 ft at 4 seconds. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 2 ft at 4 seconds. .THU...SW winds around 10 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and W 1 foot at 3 seconds. A chance of showers. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 4 ft. Wave Detail: S 3 ft at 8 seconds and SW 1 foot at 3 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and NW 1 foot at 3 seconds. .SAT THROUGH SUN NIGHT...W 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. $$ ANZ234-171800- Buzzards Bay- 104 AM EDT Wed Jul 17 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: SW 2 ft at 4 seconds and S 2 ft at 7 seconds. .WED...SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 7 seconds. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 7 seconds and SW 2 ft at 4 seconds. .THU...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 8 seconds and SW 1 foot at 3 seconds. A chance of showers. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 8 seconds and SW 1 foot at 3 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and NW 1 foot at 3 seconds. .SAT THROUGH SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-171800- Rhode Island Sound- 104 AM EDT Wed Jul 17 2024 .REST OF TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at 3 seconds. .WED...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at 3 seconds. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 8 seconds and SW 1 foot at 3 seconds. .THU...SW winds around 10 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 8 seconds. A chance of showers. .THU NIGHT...W winds around 10 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 8 seconds. .SAT THROUGH SUN NIGHT...W 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. $$ ANZ237-171800- Block Island Sound- 104 AM EDT Wed Jul 17 2024 .REST OF TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 3 seconds. .WED...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at 3 seconds. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and SW 1 foot at 3 seconds. A chance of showers after midnight. .THU...W winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds. A chance of showers in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds. .FRI AND FRI NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds. .SAT THROUGH SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-171800- Boston Harbor- 104 AM EDT Wed Jul 17 2024 .REST OF TONIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Waves 1 foot or less. .WED...S winds 5 to 10 kt. Waves 1 foot or less. .WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance of showers in the evening. .THU...W winds 5 to 10 kt. Waves 1 foot or less. A chance of showers in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves 1 foot or less. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .SAT THROUGH SUN NIGHT...W winds 5 to 10 kt. 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. $$ ANZ236-171800- Narragansett Bay- 104 AM EDT Wed Jul 17 2024 .REST OF TONIGHT...SW winds 5 to 10 kt. Waves 2 to 3 ft. .WED...S winds around 5 kt, increasing to around 10 kt in the afternoon. Waves 2 to 3 ft. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft. .THU...W winds 5 to 10 kt. Waves 2 to 4 ft. A chance of showers. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves 2 to 4 ft. .FRI AND FRI NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft. .SAT THROUGH SUN NIGHT...W winds 5 to 10 kt. Waves around 2 ft. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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