


Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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464 FZUS51 KBOX 200204 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 1004 PM EDT Tue Aug 19 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-201500- 1004 PM EDT Tue Aug 19 2025 .Synopsis for Massachusetts and Rhode Island coastal waters... High pres over Quebec gradually shifts east into the Maritimes this week. All mariners are urged to closely follow the National Hurricane Center Forecasts for the impacts of Major Hurricane Erin...especially those with interests in the Atlantic. Although the Major Hurricane will be passing well to the east of our waters later this week...high seas are expected to enter our open waters from large southerly swell. $$ ANZ250-201500- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 1004 PM EDT Tue Aug 19 2025 .OVERNIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 7 seconds and SE 2 ft at 15 seconds. .WED...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 8 seconds and SE 2 ft at 15 seconds. A chance of rain in the afternoon. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 6 seconds and SE 2 ft at 13 seconds. A chance of rain. .THU...E winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft at 6 seconds and S 2 ft at 15 seconds. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 8 seconds and S 2 ft at 16 seconds. .FRI AND FRI NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 8 to 11 ft. Wave Detail: E 9 ft at 9 seconds and SE 9 ft at 16 seconds. .SAT...NE winds 15 to 20 kt. Seas 7 to 10 ft. .SAT NIGHT AND SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 4 to 6 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-201500- Massachusetts Bay and Ipswich Bay- 1004 PM EDT Tue Aug 19 2025 .OVERNIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 6 seconds and S 1 foot at 17 seconds. .WED...E winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: E 2 ft at 6 seconds and SE 2 ft at 15 seconds. A chance of rain in the afternoon. .WED NIGHT...E winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: E 2 ft at 5 seconds and S 2 ft at 14 seconds. A chance of rain. .THU...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 5 seconds and S 2 ft at 15 seconds. .THU NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 7 seconds and S 2 ft at 18 seconds. .FRI AND FRI NIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: E 7 ft at 11 seconds and SE 3 ft at 17 seconds. .SAT AND SAT NIGHT...NE winds 15 to 20 kt, becoming S 10 to 15 kt. Seas 5 to 7 ft. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. 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. $$ ANZ231-201500- Cape Cod Bay- 1004 PM EDT Tue Aug 19 2025 ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE FRIDAY NIGHT... .OVERNIGHT...SE winds around 5 kt. Seas around 2 ft. Wave Detail: S 2 ft at 16 seconds and NE 1 foot at 3 seconds. .WED...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 14 seconds and E 1 foot at 3 seconds. A chance of rain in the afternoon. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 3 seconds and S 2 ft at 14 seconds. Rain likely, mainly in the evening. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 4 seconds and S 3 ft at 15 seconds. A chance of rain in the morning. .THU NIGHT...NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 4 seconds and S 4 ft at 18 seconds. .FRI AND FRI NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: N 4 ft at 5 seconds and S 4 ft at 18 seconds. .SAT...N winds 15 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-201500- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 1004 PM EDT Tue Aug 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE FRIDAY NIGHT... .OVERNIGHT...SE winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 15 seconds and NE 3 ft at 8 seconds. .WED...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: S 5 ft at 15 seconds and E 2 ft at 8 seconds. A chance of rain in the afternoon. .WED NIGHT...E winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 5 to 7 ft. Wave Detail: S 5 ft at 15 seconds and E 4 ft at 6 seconds. A chance of rain. .THU...E winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft, building to 6 to 9 ft in the afternoon. S and E of Nantucket, seas 7 to 10 ft, building to 9 to 13 ft in the afternoon. Wave Detail: S 6 ft at 16 seconds and SE 5 ft at 7 seconds, becoming S 7 ft at 17 seconds and SE 6 ft at 7 seconds. A chance of rain in the morning. .THU NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 8 to 11 ft, building to 9 to 13 ft after midnight. S and E of Nantucket, seas 12 to 16 ft, building to 14 to 19 ft after midnight. Wave Detail: S 9 ft at 17 seconds and E 7 ft at 7 seconds, becoming S 11 ft at 18 seconds and E 9 ft at 8 seconds. .FRI...NE winds 25 to 30 kt, becoming N 20 to 25 kt in the afternoon. Gusts up to 40 kt. Seas 11 to 15 ft. S and E of Nantucket, seas 15 to 19 ft, subsiding to 13 to 18 ft in the afternoon. Wave Detail: E 11 ft at 9 seconds and S 11 ft at 18 seconds. .FRI NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 10 to 14 ft. .SAT...N winds 20 to 25 kt. Seas 8 to 11 ft. .SAT NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 6 to 9 ft. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. A chance of showers. 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. $$ ANZ255-201500- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 1004 PM EDT Tue Aug 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE FRIDAY NIGHT... .OVERNIGHT...E winds around 10 kt. Seas 4 to 6 ft. Wave Detail: S 6 ft at 15 seconds and E 3 ft at 8 seconds. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. Wave Detail: S 6 ft at 14 seconds and E 4 ft at 5 seconds. A chance of rain in the afternoon. .WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Wave Detail: S 7 ft at 15 seconds and E 5 ft at 6 seconds. A chance of rain. .THU...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 7 to 10 ft, building to 9 to 13 ft in the afternoon. Wave Detail: S 8 ft at 15 seconds and E 6 ft at 6 seconds, becoming S 10 ft at 17 seconds and SE 6 ft at 7 seconds. A chance of rain in the morning, then a chance of showers in the afternoon. .THU NIGHT AND FRI...N winds 25 to 30 kt with gusts up to 40 kt. Seas 11 to 15 ft. Wave Detail: S 14 ft at 17 seconds and E 9 ft at 9 seconds. .FRI NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to 13 ft, subsiding to 8 to 11 ft after midnight. Wave Detail: NE 10 ft at 11 seconds and SE 6 ft at 13 seconds, becoming NE 10 ft at 12 seconds and N 4 ft at 5 seconds. .SAT...N winds 20 to 25 kt. Seas 7 to 10 ft. .SAT NIGHT...S winds 10 to 15 kt. Seas 5 to 8 ft. .SUN...S winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-201500- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 1004 PM EDT Tue Aug 19 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON... .OVERNIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: S 6 ft at 15 seconds and E 3 ft at 5 seconds. .WED...E winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: S 6 ft at 14 seconds and E 5 ft at 5 seconds. A chance of rain in the afternoon. .WED NIGHT...E winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 30 kt. Seas 6 to 9 ft. Wave Detail: E 7 ft at 6 seconds and S 6 ft at 15 seconds. Rain likely. .THU...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 8 to 11 ft, building to 10 to 13 ft in the afternoon. Wave Detail: E 8 ft at 7 seconds and S 7 ft at 15 seconds, becoming S 9 ft at 17 seconds and E 8 ft at 7 seconds. A chance of rain in the morning. .THU NIGHT...NE winds 25 to 30 kt with gusts up to 40 kt. Seas 12 to 15 ft, building to 13 to 18 ft after midnight. Wave Detail: S 12 ft at 17 seconds and E 10 ft at 7 seconds, becoming S 14 ft at 17 seconds and E 10 ft at 8 seconds. .FRI...NE winds 25 to 30 kt, becoming N 20 to 25 kt in the afternoon. Gusts up to 40 kt. Seas 14 to 18 ft, subsiding to 11 to 15 ft in the afternoon. Wave Detail: S 13 ft at 17 seconds and NE 10 ft at 8 seconds, becoming SE 10 ft at 14 seconds and NE 9 ft at 9 seconds. .FRI NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 9 to 13 ft, subsiding to 8 to 11 ft after midnight. .SAT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 7 to 10 ft. .SAT NIGHT AND SUN...S winds around 10 kt. Seas 5 to 7 ft. .SUN NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. A chance of showers. 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. $$ ANZ232-201500- Nantucket Sound- 1004 PM EDT Tue Aug 19 2025 ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE FRIDAY NIGHT... .OVERNIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and S 2 ft at 15 seconds. .WED...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: E 2 ft at 6 seconds and S 2 ft at 14 seconds. A chance of rain in the afternoon. .WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: E 3 ft at 4 seconds and S 3 ft at 16 seconds. Rain likely, mainly in the evening. .THU...E winds 15 to 20 kt, becoming NE 20 to 25 kt in the afternoon. Gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: SE 4 ft at 6 seconds and S 3 ft at 15 seconds. A chance of rain in the morning. .THU NIGHT AND FRI...N winds 25 to 30 kt with gusts up to 40 kt. Seas 6 to 9 ft. Wave Detail: NE 5 ft at 4 seconds and S 3 ft at 17 seconds. .FRI NIGHT...N winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: N 5 ft at 6 seconds and SE 2 ft at 13 seconds. .SAT...N winds 20 to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-201500- Vineyard Sound- 1004 PM EDT Tue Aug 19 2025 ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON... .OVERNIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 15 seconds and E 1 foot at 4 seconds. .WED...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft at 14 seconds and E 2 ft at 4 seconds. A chance of rain in the afternoon. .WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 16 seconds and SE 3 ft at 4 seconds. Rain. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: S 5 ft at 17 seconds and E 3 ft at 5 seconds. A chance of rain in the morning. .THU NIGHT AND FRI...N winds 20 to 25 kt with gusts up to 35 kt. Seas 6 to 9 ft. Wave Detail: S 7 ft at 17 seconds and E 4 ft at 5 seconds. .FRI NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: N 3 ft at 5 seconds and SE 3 ft at 13 seconds. .SAT THROUGH SUN...S winds 15 to 20 kt. Seas 2 to 4 ft. .SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers. 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. $$ ANZ234-201500- Buzzards Bay- 1004 PM EDT Tue Aug 19 2025 ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON... .OVERNIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 15 seconds and E 1 foot at 3 seconds. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 14 seconds and E 2 ft at 3 seconds. A chance of rain in the afternoon. .WED NIGHT...E winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 15 seconds and SE 2 ft at 3 seconds. Rain. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S 4 ft at 17 seconds and E 3 ft at 5 seconds. A chance of rain in the morning. .THU NIGHT...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 17 seconds and NE 3 ft at 4 seconds. .FRI...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: S 5 ft at 17 seconds and N 4 ft at 4 seconds. .FRI NIGHT...N winds 15 to 20 kt. Gusts up to 30 kt in the evening. Seas 3 to 5 ft. .SAT THROUGH SUN...S winds 15 to 20 kt. Seas 2 to 4 ft. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-201500- Rhode Island Sound- 1004 PM EDT Tue Aug 19 2025 ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON... .OVERNIGHT...E winds around 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 15 seconds and SE 2 ft at 4 seconds. .WED...E winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 4 to 6 ft. Wave Detail: S 5 ft at 14 seconds and SE 4 ft at 5 seconds. A chance of rain in the afternoon. .WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Wave Detail: E 6 ft at 7 seconds and S 6 ft at 16 seconds. Rain likely. Vsby 1 to 3 NM in the evening. .THU...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 6 to 9 ft, building to 8 to 11 ft in the afternoon. Wave Detail: E 6 ft at 7 seconds and S 6 ft at 15 seconds, becoming S 9 ft at 17 seconds and SE 6 ft at 7 seconds. A chance of rain in the morning. .THU NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 9 to 12 ft, building to 10 to 14 ft after midnight. Wave Detail: S 11 ft at 17 seconds and E 7 ft at 7 seconds, becoming S 13 ft at 17 seconds and E 7 ft at 7 seconds. .FRI...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 10 to 14 ft, subsiding to 8 to 11 ft in the afternoon. Wave Detail: S 13 ft at 17 seconds and NE 6 ft at 7 seconds, becoming SE 10 ft at 15 seconds and NE 5 ft at 6 seconds. .FRI NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 9 ft, subsiding to 5 to 7 ft after midnight. .SAT...NW winds 15 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT AND SUN...S winds 10 to 15 kt. Gusts up to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers. 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. $$ ANZ237-201500- Block Island Sound- 1004 PM EDT Tue Aug 19 2025 ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY AFTERNOON... .OVERNIGHT...E winds around 10 kt. Seas 3 to 5 ft. Wave Detail: S 5 ft at 15 seconds and E 2 ft at 5 seconds. .WED...E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 14 seconds and E 4 ft at 5 seconds. A chance of rain in the afternoon with vsby 1 to 3 NM. .WED NIGHT...E winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Wave Detail: E 6 ft at 6 seconds and S 6 ft at 16 seconds. Rain. Vsby 1 to 3 NM in the evening. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 7 to 10 ft. Wave Detail: S 8 ft at 17 seconds and E 6 ft at 7 seconds. A chance of rain in the morning. .THU NIGHT...NE winds 20 to 25 kt with gusts up to 35 kt. Seas 9 to 13 ft. Wave Detail: S 12 ft at 17 seconds and E 7 ft at 7 seconds. .FRI...N winds 20 to 25 kt, becoming NE 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 10 to 14 ft, subsiding to 9 to 12 ft in the afternoon. Wave Detail: S 12 ft at 17 seconds and E 7 ft at 8 seconds, becoming SE 10 ft at 15 seconds and E 5 ft at 8 seconds. .FRI NIGHT...NE winds 15 to 20 kt, becoming N after midnight. Gusts up to 25 kt. Seas 7 to 10 ft. .SAT...W winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...S winds around 10 kt. Seas 4 to 6 ft. .SUN...S winds around 10 kt with gusts up to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-201500- Boston Harbor- 1004 PM EDT Tue Aug 19 2025 .OVERNIGHT...SE winds 5 to 10 kt. Waves 1 foot or less. .WED...E winds 5 to 10 kt. Waves 1 foot or less, then around 2 ft in the afternoon. A chance of rain in the afternoon. .WED NIGHT...E winds around 10 kt. Waves around 2 ft. Rain likely, mainly in the evening. .THU...NE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .THU NIGHT AND FRI...NE winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 3 ft. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, becoming NW after midnight. Waves 2 to 3 ft. .SAT THROUGH SUN...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. 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. $$ ANZ236-201500- Narragansett Bay- 1004 PM EDT Tue Aug 19 2025 .OVERNIGHT...SE winds 5 to 10 kt. Waves 2 to 3 ft. .WED...E winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 4 ft. A chance of rain in the afternoon. .WED NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft, except 4 to 6 ft at the bay entrance. Rain. Vsby 1 to 3 NM in the evening. .THU...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 3 ft, except 5 to 7 ft at the bay entrance. A chance of rain in the morning. .THU NIGHT AND FRI...NE winds 15 to 20 kt with gusts up to 30 kt. Waves 2 to 3 ft, except 5 to 8 ft at the bay entrance. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt, becoming NW after midnight. Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance. .SAT THROUGH SUN...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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