Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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135 FZUS51 KBOX 162005 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 405 PM EDT Tue Jul 16 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-170900- 405 PM EDT Tue Jul 16 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. $$ ANZ250-170900- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 405 PM EDT Tue Jul 16 2024 .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 2 ft at 9 seconds. A slight chance of showers this evening. Patchy fog after midnight. Vsby 1 NM or less. .WED...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 4 seconds and SE 2 ft at 8 seconds. A chance of showers. A chance of tstms in the evening. Vsby 1 to 3 NM after midnight. .THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and SW 1 foot at 4 seconds. A chance of showers in the morning. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at 4 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds and N 1 foot at 3 seconds. .SAT THROUGH SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-170900- Massachusetts Bay and Ipswich Bay- 405 PM EDT Tue Jul 16 2024 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. A slight chance of showers this evening. Patchy fog after midnight. 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 around 2 ft. Wave Detail: SW 2 ft at 3 seconds and SE 1 foot at 9 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers. A chance of tstms in the evening. .THU...SW winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at 9 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: SW 1 foot at 3 seconds and SE 1 foot at 9 seconds, becoming NW 1 foot at 2 seconds and S 1 foot at 8 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: N 1 foot at 3 seconds and S 1 foot at 7 seconds. .SAT THROUGH SUN NIGHT...W winds 5 to 10 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. $$ ANZ231-170900- Cape Cod Bay- 405 PM EDT Tue Jul 16 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog after midnight with vsby 1 NM or less. .WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers. A chance of tstms in the evening. .THU...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds and SW 1 foot at 2 seconds. A chance of showers. .THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 7 seconds and SW 1 foot at 2 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and N 1 foot at 3 seconds. .SAT THROUGH SUN NIGHT...W winds 5 to 10 kt. Seas 1 foot or less. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-170900- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 405 PM EDT Tue Jul 16 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 4 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and W 1 foot at 4 seconds. Patchy dense fog in the morning with vsby 1 NM or less. .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. A chance of showers. A chance of tstms in the evening. Vsby 1 to 3 NM. .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 4 ft at 9 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. 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. $$ ANZ255-170900- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 405 PM EDT Tue Jul 16 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and SW 1 foot at 3 seconds. A chance of showers. A chance of tstms in the evening. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 4 to 6 ft. Wave Detail: S 6 ft at 8 seconds and SW 1 foot at 3 seconds. A chance of showers. .THU NIGHT...SW winds around 10 kt, becoming NW after midnight. Seas 4 to 6 ft. Wave Detail: S 5 ft at 8 seconds and W 1 foot at 2 seconds. .FRI...N winds 5 to 10 kt, becoming NE in the afternoon. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and SE 1 foot at 7 seconds. .FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 4 ft. .SAT THROUGH SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-170900- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 405 PM EDT Tue Jul 16 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... .TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 7 seconds and SE 1 foot at 8 seconds. Patchy fog after midnight with vsby 1 NM or less. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: S 5 ft at 7 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 6 ft. Wave Detail: S 6 ft at 8 seconds. A chance of showers. A chance of tstms in the evening. Vsby 1 to 3 NM. .THU...W winds 10 to 15 kt. 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 5 ft at 8 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds. .SAT THROUGH SUN 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. $$ ANZ232-170900- Nantucket Sound- 405 PM EDT Tue Jul 16 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING... .TONIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 1 foot at 9 seconds. Patchy fog. Vsby 1 NM or less. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 6 seconds and SW 2 ft at 3 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds. A chance of showers. A chance of tstms in the evening. Vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt. Gusts up to 20 kt in the morning. Seas 2 to 4 ft. Wave Detail: SW 2 ft at 3 seconds and S 2 ft at 8 seconds. A chance of showers. .THU NIGHT...SW winds around 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and SW 2 ft at 8 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and N 1 foot at 2 seconds. .SAT THROUGH SUN NIGHT...W winds 10 to 15 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-170900- Vineyard Sound- 405 PM EDT Tue Jul 16 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 6 seconds and SW 1 foot at 3 seconds. Patchy fog after midnight with vsby 1 NM or less. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 6 seconds and SW 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at 3 seconds. A chance of showers. A chance of tstms in the evening with vsby 1 to 3 NM. .THU...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SW 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: SW 3 ft at 8 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: 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. 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. $$ ANZ234-170900- Buzzards Bay- 405 PM EDT Tue Jul 16 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds and SW 2 ft at 3 seconds. Patchy fog after midnight with vsby 1 to 3 NM. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 6 seconds and SW 2 ft at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM. .WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 8 seconds. A chance of showers. A chance of tstms in the evening. Vsby 1 to 3 NM. .THU...SW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 7 seconds and W 1 foot at 3 seconds. A chance of showers. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 8 seconds and SW 1 foot at 3 seconds. .FRI AND FRI NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 7 seconds and N 1 foot at 2 seconds. .SAT THROUGH SUN NIGHT...W winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-170900- Rhode Island Sound- 405 PM EDT Tue Jul 16 2024 .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at 3 seconds. Patchy fog after midnight with vsby 1 NM or less. .WED...SW winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds and SW 1 foot at 3 seconds. A chance of showers. A chance of tstms in the evening with vsby 1 to 3 NM. .THU...W winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 8 seconds and SE 1 foot at 9 seconds. A chance of showers. .THU NIGHT...W winds around 10 kt, becoming NW after midnight. Seas 3 to 5 ft. Wave Detail: S 4 ft at 8 seconds and SE 1 foot at 9 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. 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. $$ ANZ237-170900- Block Island Sound- 405 PM EDT Tue Jul 16 2024 .TONIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and SW 1 foot at 4 seconds. Patchy fog after midnight with vsby 1 NM or less. .WED...SW winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds and W 1 foot at 3 seconds. Patchy fog in the morning with vsby 1 NM or less. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and SW 1 foot at 3 seconds. A chance of showers. A chance of tstms in the evening with vsby 1 to 3 NM. .THU...W winds around 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 8 seconds and SE 1 foot at 9 seconds. A chance of showers in the morning. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds and SE 1 foot at 9 seconds. .FRI AND FRI NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 8 seconds and SE 1 foot at 9 seconds. .SAT THROUGH SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Winds and seas higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-170900- Boston Harbor- 405 PM EDT Tue Jul 16 2024 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Waves around 2 ft. A slight chance of showers this evening. .WED...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Waves 1 foot or less. A chance of showers and tstms in the afternoon. .WED NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Waves 1 foot or less. A chance of showers. A chance of tstms 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. 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. $$ ANZ236-170900- Narragansett Bay- 405 PM EDT Tue Jul 16 2024 .TONIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt this evening. Waves 2 to 3 ft. Patchy fog after midnight with vsby 1 to 3 NM. .WED...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. .WED NIGHT...SW winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves 2 to 3 ft. A chance of showers. A chance of tstms in the evening. .THU...W winds 5 to 10 kt. Waves 2 to 4 ft. A chance of showers. .THU NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Waves 2 to 4 ft. .FRI AND FRI NIGHT...W winds 5 to 10 kt. Waves 2 to 3 ft. .SAT THROUGH SUN NIGHT...W winds 5 to 10 kt. Waves around 2 ft. Winds and waves higher in and near tstms. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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