FZUS51 KBOX 192303
CWFBOX
Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
703 PM EDT Mon Aug 19 2024
Coastal waters from the Merrimack River MA to Watch Hill RI outto 25 NM
ANZ200-201200
703 PM EDT Mon Aug 19 2024
Synopsis for Massachusetts and Rhode Island coastal waters
As Hurricane Ernesto moves NE over the open Atlantic, swells willdiminish. A cold front crosses the waters early Tuesday. Highpressure then builds in from the west, resulting in relativelytranquil boating conditions through Saturday.
ANZ250-201200
Coastal waters east of Ipswich Bay and the Stellwagen BankNational Marine Sanctuary
703 PM EDT Mon Aug 19 2024
SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
TONIGHT
S winds around 10 kt, becoming W after midnight. Seas5 to 7 ft. Wave Detail: SE 7 ft at 12 seconds. A chance ofshowers with isolated tstms this evening. A slight chance ofshowers after midnight. Vsby 1 NM or less.
TUE
NW winds around 10 kt. Seas 3 to 5 ft. Wave Detail: SE5 ft at 11 seconds and NW 2 ft at 3 seconds.
TUE NIGHT
NW winds around 10 kt. Seas 2 to 4 ft. Wave Detail:E 4 ft at 10 seconds and NW 2 ft at 4 seconds.
WED
NW winds around 10 kt, becoming SW in the afternoon. Seas2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds and NW 1 foot at3 seconds.
WED NIGHT AND THU
SW winds 5 to 10 kt. Seas around 2 ft. WaveDetail: SE 2 ft at 7 seconds and W 1 foot at 3 seconds.
THU NIGHT
W winds 5 to 10 kt. Seas around 2 ft. Wave Detail:SE 2 ft at 8 seconds and W 1 foot at 3 seconds.
FRI THROUGH SAT NIGHT
SW 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 theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
ANZ251-201200
Massachusetts Bay and Ipswich Bay
703 PM EDT Mon Aug 19 2024
TONIGHT
S winds 5 to 10 kt, becoming W after midnight. Seas2 to 4 ft. Wave Detail: E 4 ft at 13 seconds and S 1 foot at4 seconds. A chance of showers with a slight chance of tstms thisevening, then a slight chance of showers after midnight. Sometstms may produce gusty winds and heavy rainfall this evening.Vsby 1 NM or less.
TUE
NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ftat 11 seconds and NW 2 ft at 3 seconds.
TUE NIGHT
NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E3 ft at 10 seconds and NW 1 foot at 3 seconds.
WED
NW winds 5 to 10 kt, becoming S in the afternoon. Seasaround 2 ft. Wave Detail: NE 2 ft at 8 seconds and NW 1 foot at3 seconds.
WED NIGHT THROUGH THU NIGHT
W winds 5 to 10 kt. Seas around2 ft. Wave Detail: E 2 ft at 7 seconds and SW 1 foot at2 seconds.
FRI THROUGH SAT NIGHT
SW winds 5 to 10 kt. Seas 1 foot orless. Wave Detail: W 1 foot at 2 seconds and E 1 foot at9 seconds.
Winds and seas higher in and near tstms.
Seas are reported as significant wave height, which is theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
ANZ231-201200
Cape Cod Bay
703 PM EDT Mon Aug 19 2024
TONIGHT
SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE3 ft at 12 seconds and S 1 foot at 2 seconds. A slight chance ofshowers. Vsby 1 to 3 NM after midnight.
TUE
NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ftat 10 seconds and NW 1 foot at 3 seconds.
TUE NIGHT
NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:E 2 ft at 9 seconds and NW 1 foot at 4 seconds.
WED
NW winds 5 to 10 kt, becoming W in the afternoon. Seasaround 2 ft. Wave Detail: NW 1 foot at 4 seconds and E 1 foot at7 seconds.
WED NIGHT THROUGH THU NIGHT
W winds 5 to 10 kt. Seas around2 ft. Wave Detail: W 1 foot at 3 seconds and E 1 foot at6 seconds.
FRI THROUGH SAT NIGHT
SW winds 5 to 10 kt. Seas 1 foot orless. Wave Detail: NW 1 foot at 3 seconds and SE 1 foot at8 seconds.
Seas are reported as significant wave height, which is theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
ANZ254-201200
Coastal waters from Provincetown MA to Chatham MA to Nantucket MAout 20 nm
703 PM EDT Mon Aug 19 2024
SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
TONIGHT
SW winds 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: SE7 ft at 12 seconds and SW 2 ft at 5 seconds. A slight chance ofshowers. Vsby 1 NM or less.
TUE
W winds around 10 kt. Seas 4 to 6 ft. Wave Detail: SE 6 ftat 10 seconds and W 1 foot at 3 seconds.
TUE NIGHT
NW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: SE4 ft at 9 seconds and NW 1 foot at 4 seconds.
WED
W winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: SE 3 ftat 8 seconds and NW 1 foot at 4 seconds.
WED NIGHT THROUGH THU NIGHT
W winds 5 to 10 kt. Seas 2 to3 ft. Wave Detail: SE 3 ft at 7 seconds and W 1 foot at3 seconds.
FRI THROUGH SAT NIGHT
SW winds 5 to 10 kt. Seas around 2 ft.Wave Detail: S 2 ft at 7 seconds and NW 1 foot at 3 seconds.
Seas are reported as significant wave height, which is theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
ANZ255-201200
Coastal Waters extending out to 25 nm South of Marthas Vineyardand Nantucket
703 PM EDT Mon Aug 19 2024
SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
TONIGHT
SW winds 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: SE6 ft at 12 seconds and S 3 ft at 6 seconds. A slight chance ofshowers after midnight with vsby 1 to 3 NM.
TUE
W winds around 10 kt. Seas 4 to 6 ft. Wave Detail: S 6 ftat 9 seconds.
TUE NIGHT
NW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S4 ft at 8 seconds and NW 1 foot at 4 seconds.
WED
W winds 5 to 10 kt, increasing to 10 to 15 kt in theafternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft at 8 seconds andNW 2 ft at 6 seconds.
WED NIGHT THROUGH THU NIGHT
W winds 10 to 15 kt. Seas 2 to3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 7 seconds.
FRI THROUGH SAT NIGHT
SW winds 5 to 10 kt. Seas around 2 ft.Wave Detail: SE 2 ft at 7 seconds and W 1 foot at 4 seconds.
Seas are reported as significant wave height, which is theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
ANZ256-201200
Coastal Waters from Montauk NY to Marthas Vineyard extending outto 20 nm South of Block Island
703 PM EDT Mon Aug 19 2024
SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING
TONIGHT
SW winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: SE5 ft at 12 seconds and S 3 ft at 6 seconds. A slight chance ofshowers. Vsby 1 to 3 NM after midnight.
TUE
NW winds 10 to 15 kt. Seas 3 to 5 ft. Wave Detail: SE 5 ftat 9 seconds.
TUE NIGHT
NW winds around 10 kt. Seas 3 to 4 ft. Wave Detail:S 4 ft at 8 seconds and NW 1 foot at 3 seconds.
WED
W winds 10 to 15 kt. Seas around 3 ft. Wave Detail: S 3 ftat 8 seconds and W 2 ft at 3 seconds.
WED NIGHT THROUGH THU NIGHT
NW winds 10 to 15 kt. Seas 2 to3 ft. Wave Detail: W 2 ft at 3 seconds and SE 2 ft at 7 seconds.
FRI THROUGH SAT NIGHT
SW winds 5 to 10 kt. Seas around 2 ft.Wave Detail: NW 1 foot at 3 seconds and SE 1 foot at 7 seconds.
Seas are reported as significant wave height, which is theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
ANZ232-201200
Nantucket Sound
703 PM EDT Mon Aug 19 2024
TONIGHT
SW winds 10 to 15 kt. Gusts up to 20 kt this evening.Seas 2 to 4 ft. Wave Detail: SE 3 ft at 11 seconds and SW 2 ft at4 seconds. A slight chance of showers. Vsby 1 to 3 NM, decreasingto 1 NM or less after midnight.
TUE
NW winds around 10 kt. Seas 2 to 4 ft. Wave Detail: W 2 ftat 3 seconds and SE 2 ft at 11 seconds.
TUE NIGHT
NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE2 ft at 9 seconds and NW 1 foot at 3 seconds.
WED
NW winds 5 to 10 kt, becoming W 10 to 15 kt in theafternoon. Seas around 2 ft. Wave Detail: W 2 ft at 3 seconds andSE 1 foot at 8 seconds.
WED NIGHT THROUGH THU NIGHT
W winds 10 to 15 kt. Seas around2 ft. Wave Detail: W 2 ft at 3 seconds and SE 1 foot at8 seconds.
FRI THROUGH SAT NIGHT
SW winds 5 to 10 kt. Seas 1 foot orless. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at7 seconds.
Seas are reported as significant wave height, which is theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
ANZ233-201200
Vineyard Sound
703 PM EDT Mon Aug 19 2024
TONIGHT
SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE3 ft at 12 seconds and SW 2 ft at 5 seconds. A slight chance ofshowers after midnight with vsby 1 to 3 NM.
TUE
NW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ftat 8 seconds and W 1 foot at 5 seconds.
TUE NIGHT
NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:S 2 ft at 8 seconds and NW 1 foot at 4 seconds.
WED
NW winds 5 to 10 kt, becoming W in the afternoon. Seasaround 2 ft. Wave Detail: W 2 ft at 3 seconds and S 2 ft at7 seconds.
WED NIGHT AND THU
W winds around 10 kt. Seas around 2 ft. WaveDetail: SW 2 ft at 4 seconds and S 1 foot at 7 seconds.
THU NIGHT
W winds 5 to 10 kt. Seas 1 foot or less. WaveDetail: SW 1 foot at 4 seconds and S 1 foot at 7 seconds.
FRI THROUGH SAT NIGHT
SW winds 5 to 10 kt. Seas 1 foot orless.
Seas are reported as significant wave height, which is theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
ANZ234-201200
Buzzards Bay
703 PM EDT Mon Aug 19 2024
TONIGHT
SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SW2 ft at 5 seconds and SE 2 ft at 11 seconds. A slight chance ofshowers. Vsby 1 NM or less, increasing to 1 to 3 NM aftermidnight.
TUE
NW winds around 10 kt. Seas around 2 ft. Wave Detail: S2 ft at 9 seconds and NW 1 foot at 5 seconds.
TUE NIGHT
NW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:S 2 ft at 8 seconds and NW 1 foot at 4 seconds.
WED
NW winds 5 to 10 kt, becoming W in the afternoon. Seasaround 2 ft. Wave Detail: NW 1 foot at 3 seconds and S 1 foot at7 seconds.
WED NIGHT AND THU
W winds 5 to 10 kt. Seas around 2 ft. WaveDetail: SW 1 foot at 4 seconds and S 1 foot at 7 seconds.
THU NIGHT
W winds 5 to 10 kt. Seas 1 foot or less. WaveDetail: SW 1 foot at 4 seconds and SE 1 foot at 7 seconds.
FRI THROUGH SAT NIGHT
SW winds 5 to 10 kt. Seas 1 foot orless.
Seas are reported as significant wave height, which is theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
ANZ235-201200
Rhode Island Sound
703 PM EDT Mon Aug 19 2024
SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT
SW winds 10 to 15 kt, becoming W after midnight. Seas2 to 4 ft. Wave Detail: SE 4 ft at 12 seconds and S 3 ft at6 seconds. A slight chance of showers. Vsby 1 to 3 NM.
TUE
NW winds around 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ftat 8 seconds and NW 1 foot at 4 seconds.
TUE NIGHT
NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S3 ft at 8 seconds and NW 1 foot at 3 seconds.
WED
NW winds around 10 kt, becoming W in the afternoon. Seas2 to 3 ft. Wave Detail: S 3 ft at 7 seconds and W 2 ft at3 seconds.
WED NIGHT AND THU
W winds 10 to 15 kt. Seas 2 to 3 ft. WaveDetail: W 2 ft at 4 seconds and SE 2 ft at 7 seconds.
THU NIGHT
W winds 5 to 10 kt. Seas around 2 ft. Wave Detail:SW 2 ft at 4 seconds and SE 1 foot at 7 seconds.
FRI THROUGH SAT NIGHT
SW winds 5 to 10 kt. Seas around 2 ft.
Seas are reported as significant wave height, which is theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
ANZ237-201200
Block Island Sound
703 PM EDT Mon Aug 19 2024
SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT
SW winds around 10 kt, becoming W after midnight. Seas2 to 4 ft. Wave Detail: SE 4 ft at 12 seconds and S 2 ft at5 seconds. A slight chance of showers and tstms this evening.Some tstms may produce gusty winds and heavy rainfall thisevening.
TUE
NW winds around 10 kt. Seas 2 to 3 ft. Wave Detail: SE3 ft at 9 seconds and W 1 foot at 4 seconds.
TUE NIGHT
NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S3 ft at 8 seconds and W 1 foot at 3 seconds.
WED
W winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at8 seconds and W 1 foot at 3 seconds.
WED NIGHT AND THU
W winds 5 to 10 kt. Seas around 2 ft. WaveDetail: SE 2 ft at 7 seconds and W 1 foot at 3 seconds.
THU NIGHT
W winds 5 to 10 kt. Seas around 2 ft. Wave Detail: W1 foot at 3 seconds and SE 1 foot at 7 seconds.
FRI THROUGH SAT NIGHT
SW 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 theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
ANZ230-201200
Boston Harbor
703 PM EDT Mon Aug 19 2024
TONIGHT
S winds 5 to 10 kt, becoming W after midnight. Waves1 foot or less. A chance of showers. Isolated tstms this evening.Some tstms may produce gusty winds and heavy rainfall thisevening. Vsby 1 to 3 NM after midnight.
TUE
NW winds around 10 kt. Waves around 2 ft in the morning,then 1 foot or less.
TUE NIGHT
NW winds 5 to 10 kt. Waves 1 foot or less.
WED
NW winds 5 to 10 kt, becoming W in the afternoon. Waves1 foot or less.
WED NIGHT THROUGH THU NIGHT
W winds 5 to 10 kt. Waves 1 footor less.
FRI THROUGH SAT NIGHT
SW winds 5 to 10 kt. Waves 1 foot orless.
Winds and waves higher in and near tstms.
Seas are reported as significant wave height, which is theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
ANZ236-201200
Narragansett Bay
703 PM EDT Mon Aug 19 2024
TONIGHT
SW winds 5 to 10 kt, becoming W after midnight. Wavesaround 2 ft. A slight chance of showers.
TUE
NW winds 5 to 10 kt. Waves around 2 ft.
TUE NIGHT
NW winds 5 to 10 kt. Waves around 2 ft.
WED
W winds 5 to 10 kt. Waves around 2 ft.
WED NIGHT THROUGH THU NIGHT
NW winds 5 to 10 kt. Waves around2 ft.
FRI THROUGH SAT NIGHT
SW winds 5 to 10 kt. Waves 1 foot orless.
Seas are reported as significant wave height, which is theaverage of the highest third of the waves. Individual waveheights may be more than twice the significant wave height.
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