Coastal Waters Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
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021 FZUS51 KBOX 100506 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 105 AM EDT Fri May 10 2024 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ200-101800- 105 AM EDT Fri May 10 2024 .Synopsis for Massachusetts and Rhode Island coastal waters... High pressure to our north coupled with an offshore low pressure system will generate a northeast flow of air across the waters through the weekend. A ridge of high pressure briefly builds across the waters on Monday before a cold front approaches the waters by the middle of next week. $$ ANZ250-101800- Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 105 AM EDT Fri May 10 2024 .REST OF TONIGHT...NE winds around 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 6 seconds and E 1 foot at 11 seconds. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 7 seconds and E 1 foot at 10 seconds. .FRI NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 3 to 5 ft. Wave Detail: E 4 ft at 7 seconds and E 1 foot at 10 seconds. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. Wave Detail: E 3 ft at 8 seconds and SE 1 foot at 15 seconds. .SAT NIGHT...NE winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: E 4 ft at 7 seconds and SE 1 foot at 10 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft at 8 seconds and SE 2 ft at 10 seconds. .MON AND MON NIGHT...S winds 10 to 15 kt, increasing to 15 to 20 kt. Gusts up to 25 kt. Seas 3 to 4 ft. .TUE...S winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of showers. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ251-101800- Massachusetts Bay and Ipswich Bay- 105 AM EDT Fri May 10 2024 .REST OF TONIGHT...NE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and E 1 foot at 11 seconds. .FRI...NE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and E 1 foot at 10 seconds. .FRI NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave Detail: E 3 ft at 7 seconds and E 1 foot at 10 seconds. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 7 seconds and E 1 foot at 10 seconds. .SAT NIGHT...NE winds 10 to 15 kt, becoming N 5 to 10 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 3 ft at 7 seconds and SE 1 foot at 9 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 8 seconds and NE 1 foot at 4 seconds. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .MON NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A chance of showers. .TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 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. $$ ANZ231-101800- Cape Cod Bay- 105 AM EDT Fri May 10 2024 .REST OF TONIGHT...NE winds around 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 6 seconds. A slight chance of showers. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 foot at 6 seconds. A chance of showers in the morning. .FRI NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and SE 1 foot at 7 seconds. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 3 ft. Wave Detail: N 2 ft at 3 seconds and S 1 foot at 8 seconds. .SAT NIGHT AND SUN...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 7 seconds and N 2 ft at 3 seconds. .SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and SW 1 foot at 2 seconds. .MON THROUGH TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...S winds around 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ254-101800- Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 105 AM EDT Fri May 10 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH SATURDAY MORNING... .REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 5 seconds and S 2 ft at 6 seconds. A slight chance of showers. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. Wave Detail: NE 4 ft at 7 seconds and S 2 ft at 7 seconds. A chance of showers in the morning. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 5 ft. Wave Detail: NE 4 ft at 7 seconds and S 1 foot at 8 seconds. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Wave Detail: NE 4 ft at 6 seconds and S 2 ft at 8 seconds. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 5 to 6 ft. Wave Detail: E 5 ft at 8 seconds and S 2 ft at 9 seconds. A chance of showers. .SUN...N winds 5 to 10 kt. Seas 4 to 6 ft. Wave Detail: E 5 ft at 8 seconds and S 2 ft at 9 seconds. .SUN NIGHT...W winds 5 to 10 kt. Seas 3 to 5 ft. .MON THROUGH TUE...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 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. $$ ANZ255-101800- Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket- 105 AM EDT Fri May 10 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH SATURDAY MORNING... .REST OF TONIGHT...NE winds around 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and S 2 ft at 7 seconds. A chance of showers. .FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 5 seconds and S 2 ft at 7 seconds. Showers likely, mainly in the morning. .FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: NE 4 ft at 5 seconds and S 2 ft at 8 seconds. A chance of showers after midnight. .SAT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: NE 4 ft at 5 seconds and S 2 ft at 8 seconds. .SAT NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 4 to 6 ft. Wave Detail: E 4 ft at 7 seconds and S 2 ft at 8 seconds. A chance of showers. .SUN...N winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: E 4 ft at 8 seconds and S 2 ft at 10 seconds. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. .MON NIGHT AND TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ256-101800- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 105 AM EDT Fri May 10 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH SATURDAY MORNING... .REST OF TONIGHT...E winds around 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 5 seconds and S 2 ft at 7 seconds. A chance of showers. .FRI...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: E 5 ft at 5 seconds and S 2 ft at 7 seconds. Showers likely, mainly in the morning. .FRI NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: NE 4 ft at 5 seconds and S 2 ft at 9 seconds. .SAT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: NE 4 ft at 5 seconds and S 2 ft at 9 seconds. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 5 ft. Wave Detail: E 3 ft at 7 seconds and S 2 ft at 8 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 8 seconds and S 2 ft at 10 seconds. .MON THROUGH TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 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. $$ ANZ232-101800- Nantucket Sound- 105 AM EDT Fri May 10 2024 .REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and S 1 foot at 6 seconds. A slight chance of showers. .FRI...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and S 1 foot at 7 seconds. A chance of showers in the morning. .FRI NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and S 1 foot at 8 seconds. .SAT...NE winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and S 1 foot at 8 seconds. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 6 seconds and S 1 foot at 8 seconds. A chance of showers. .SUN AND SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 8 seconds and SW 1 foot at 3 seconds. .MON THROUGH TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. .TUE NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ233-101800- Vineyard Sound- 105 AM EDT Fri May 10 2024 .REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW 2 ft at 6 seconds and NE 1 foot at 3 seconds. A chance of showers. .FRI...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 7 seconds. Showers likely in the morning. .FRI NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 8 seconds. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 9 seconds. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: NE 2 ft at 4 seconds and E 2 ft at 7 seconds. A chance of showers after midnight. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and N 1 foot at 3 seconds. .MON...SW winds 10 to 15 kt with gusts up to 20 kt. Seas around 2 ft. .MON NIGHT AND TUE...SW winds around 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...S winds around 15 kt with gusts up to 25 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. $$ ANZ234-101800- Buzzards Bay- 105 AM EDT Fri May 10 2024 .REST OF TONIGHT...NE winds 10 to 15 kt. Seas around 2 ft. Wave Detail: NE 1 foot at 3 seconds and S 1 foot at 6 seconds. A chance of showers. .FRI...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 7 seconds. A chance of showers in the morning. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 8 seconds. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and S 1 foot at 9 seconds. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, becoming N 5 to 10 kt after midnight. Seas around 2 ft. Wave Detail: NE 2 ft at 3 seconds and E 2 ft at 7 seconds. A chance of showers after midnight. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E 2 ft at 8 seconds and N 1 foot at 3 seconds. .MON THROUGH TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...S winds around 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ235-101800- Rhode Island Sound- 105 AM EDT Fri May 10 2024 .REST OF TONIGHT...NE winds around 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and S 2 ft at 6 seconds. A chance of showers. .FRI...NE winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and S 2 ft at 7 seconds. Showers likely in the morning. .FRI NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. Wave Detail: NE 2 ft at 4 seconds and E 2 ft at 7 seconds. .SAT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds and E 2 ft at 8 seconds. .SAT NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and E 2 ft at 7 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 8 seconds and S 2 ft at 10 seconds. .MON THROUGH TUE...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...S winds around 15 kt with gusts up to 25 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. $$ ANZ237-101800- Block Island Sound- 105 AM EDT Fri May 10 2024 .REST OF TONIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 4 seconds and S 2 ft at 7 seconds. Showers likely. .FRI...NE winds 15 to 20 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 5 seconds and S 2 ft at 7 seconds. Showers likely in the morning. .FRI NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at 5 seconds and E 2 ft at 9 seconds. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: E 3 ft at 5 seconds and S 2 ft at 8 seconds. .SAT NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds and NE 2 ft at 5 seconds. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 8 seconds and E 2 ft at 8 seconds. .MON THROUGH TUE...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .TUE NIGHT...S winds around 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ ANZ230-101800- Boston Harbor- 105 AM EDT Fri May 10 2024 .REST OF TONIGHT...NE winds around 10 kt. Waves around 2 ft. .FRI...NE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Waves around 2 ft. .FRI NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves around 2 ft in the evening, then 1 foot or less. .SAT...NE winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 3 ft. .SAT NIGHT...NE winds 10 to 15 kt, becoming N 5 to 10 kt after midnight. Waves 2 to 3 ft in the evening, then 1 foot or less. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. .MON...S winds 5 to 10 kt with gusts up to 20 kt. Waves around 2 ft. .MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers. .TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 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. $$ ANZ236-101800- Narragansett Bay- 105 AM EDT Fri May 10 2024 .REST OF TONIGHT...NE winds around 10 kt. Waves around 2 ft. A chance of showers. .FRI...NE winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft. A chance of showers in the morning. .FRI NIGHT...NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Waves 2 to 3 ft. .SAT...NE winds 10 to 15 kt. Gusts up to 20 kt in the morning. Waves 2 to 3 ft. .SAT NIGHT...NE winds 5 to 10 kt. Waves 2 to 3 ft. .SUN AND SUN NIGHT...SW winds 5 to 10 kt. Waves around 2 ft. .MON AND MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Waves 2 to 4 ft. .TUE AND TUE NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Waves 2 to 4 ft. A chance of showers. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ 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