430
FZUS51 KBOX 091103
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
703 AM EDT SUN AUG 9 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-100000-
703 AM EDT SUN AUG 9 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRESSURE REMAINS ANCHORED NEAR BERMUDA LEADING TO PROLONGED
SOUTH TO SOUTHWEST WINDS ACROSS THE COASTAL WATERS. STILL, CANNOT
RULE OUT LOCALIZED SEA BREEZES NEAR SHORE. A FEW STRONG TO SEVERE
STORMS ARE POSSIBLE THIS EVENING WITH FREQUENT LIGHTNING AND GUSTY
WINDS. HIGH PRESSURE BREAKS DOWN BY EARLY NEXT WEEK, PERMITTING A
FRONT TO STALL ACROSS THE WATERS BY MID WEEK.
ANZ250-100000-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 8 SECONDS.
TONIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
SEAS AROUND 2 FT. WAVE DETAIL: W 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 8 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING S 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 8 SECONDS, BECOMING S 1 FOOT AT 3 SECONDS AND SE 1 FOOT
AT 8 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E
1 FOOT AT 8 SECONDS.
TUE
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT
AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS.
TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN
AROUND 2 FT AFTER MIDNIGHT. WAVE DETAIL: W 1 FOOT AT 4 SECONDS
AND SE 1 FOOT AT 10 SECONDS, BECOMING NW 1 FOOT AT 3 SECONDS AND
SE 1 FOOT AT 10 SECONDS.
WED AND WED NIGHT
NE WINDS 5 TO 10 KT, BECOMING SW. SEAS
AROUND 2 FT.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W 10 TO 15 KT
WITH GUSTS UP TO 20 KT. SEAS AROUND 2 FT. A CHANCE OF SHOWERS AND
TSTMS.
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.
ANZ251-100000-
MASSACHUSETTS BAY AND IPSWICH BAY-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT THIS AFTERNOON.
SEAS 1 FOOT OR LESS, THEN AROUND 2 FT THIS AFTERNOON. WAVE
DETAIL: SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 9 SECONDS,
BECOMING SW 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 9 SECONDS.
TONIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
SEAS AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS. WAVE
DETAIL: W 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 9 SECONDS, BECOMING
W 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 9 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING S WITH GUSTS UP TO 20 KT IN
THE AFTERNOON. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT IN THE
AFTERNOON. WAVE DETAIL: W 1 FOOT AT 2 SECONDS AND E 1 FOOT AT
9 SECONDS, BECOMING SE 1 FOOT AT 3 SECONDS AND E 1 FOOT AT
8 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: S 1 FOOT AT 3 SECONDS
AND E 1 FOOT AT 8 SECONDS, BECOMING SW 1 FOOT AT 3 SECONDS AND E
1 FOOT AT 8 SECONDS.
TUE AND TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
WAVE DETAIL: W 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED AND WED NIGHT
NE WINDS 5 TO 10 KT, BECOMING SW. SEAS
1 FOOT OR LESS. WAVE DETAIL: NW 1 FOOT AT 2 SECONDS AND E 1 FOOT
AT 9 SECONDS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W. SEAS 1 FOOT
OR LESS, THEN AROUND 2 FT. A CHANCE OF SHOWERS AND TSTMS.
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.
ANZ231-100000-
CAPE COD BAY-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT THIS AFTERNOON. WAVE DETAIL: SW 1 FOOT AT 2 SECONDS AND SE
1 FOOT AT 8 SECONDS, BECOMING SW 1 FOOT AT 2 SECONDS AND SE
1 FOOT AT 9 SECONDS.
TONIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 8 SECONDS.
MON
SW WINDS AROUND 5 KT, BECOMING S 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. WAVE DETAIL: W 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 8 SECONDS, BECOMING SW 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 8 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: SW 1 FOOT AT 2 SECONDS
AND E 1 FOOT AT 9 SECONDS, BECOMING SW 1 FOOT AT 2 SECONDS AND E
1 FOOT AT 10 SECONDS.
TUE AND TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
WAVE DETAIL: W 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 10 SECONDS.
WED
NE WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL: NW
1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 8 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. A CHANCE
OF SHOWERS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W. SEAS AROUND
2 FT. A CHANCE OF SHOWERS AND TSTMS.
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.
ANZ254-100000-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
703 AM EDT SUN AUG 9 2026
TODAY
W WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT THIS
AFTERNOON. GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS. PATCHY DENSE FOG THIS
MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS. PATCHY FOG AFTER MIDNIGHT
WITH VSBY 1 TO 3 NM.
MON
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM
IN THE AFTERNOON.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND E
1 FOOT AT 8 SECONDS. PATCHY FOG IN THE EVENING WITH VSBY 1 NM OR
LESS.
TUE
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 5 SECONDS AND E
1 FOOT AT 9 SECONDS.
WED AND WED NIGHT
NW WINDS 5 TO 10 KT, BECOMING SW. SEAS 2 TO
3 FT.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. 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.
ANZ255-100000-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY DENSE FOG THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS. PATCHY FOG AFTER MIDNIGHT
WITH VSBY 1 TO 3 NM.
MON
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND E
1 FOOT AT 8 SECONDS. PATCHY FOG IN THE EVENING WITH VSBY 1 NM OR
LESS.
TUE AND TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS.
WED
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
THU
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 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.
ANZ256-100000-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
MON
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND E
1 FOOT AT 9 SECONDS. PATCHY FOG IN THE EVENING WITH VSBY 1 NM OR
LESS.
TUE AND TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
WED
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 6 SECONDS AND SE 1 FOOT AT 9 SECONDS.
WED NIGHT AND THU
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 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.
ANZ232-100000-
NANTUCKET SOUND-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS.
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: W 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
MON 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 E
1 FOOT AT 8 SECONDS.
TUE AND TUE NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND E 1 FOOT
AT 8 SECONDS.
WED
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W
1 FOOT AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED NIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. 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.
ANZ233-100000-
VINEYARD SOUND-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT THIS AFTERNOON.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
11 SECONDS.
TONIGHT
W 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: SW 3 FT AT 6 SECONDS AND SE 1 FOOT AT 7 SECONDS.
MON
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND E 1 FOOT
AT 10 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND
SE 1 FOOT AT 9 SECONDS.
TUE AND TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
WED
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT
AT 6 SECONDS AND SE 1 FOOT AT 13 SECONDS.
WED NIGHT THROUGH THU NIGHT
W 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.
ANZ234-100000-
BUZZARDS BAY-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH
GUSTS UP TO 25 KT THIS AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: SW
2 FT AT 6 SECONDS AND SE 1 FOOT AT 10 SECONDS.
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO AROUND 5 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 2 FT AT 6 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT
AT 6 SECONDS AND SE 1 FOOT AT 10 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND
SE 2 FT AT 9 SECONDS. PATCHY FOG IN THE EVENING WITH VSBY 1 TO
3 NM.
TUE AND TUE NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
WED
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 6 SECONDS AND SE 1 FOOT AT 13 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. A CHANCE OF SHOWERS AND TSTMS.
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.
ANZ235-100000-
RHODE ISLAND SOUND-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT THIS AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 6 SECONDS AND SE 1 FOOT AT 10 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 7 SECONDS AND SE 2 FT AT 10 SECONDS. PATCHY FOG IN THE
EVENING WITH VSBY 1 TO 3 NM.
TUE AND TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
WED
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 6 SECONDS AND SE 1 FOOT AT 14 SECONDS.
WED NIGHT AND THU
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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.
ANZ237-100000-
BLOCK ISLAND SOUND-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH
GUSTS UP TO 20 KT THIS AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW
3 FT AT 6 SECONDS AND SE 1 FOOT AT 8 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT, BECOMING
NW AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT
6 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON
W WINDS AROUND 5 KT, BECOMING SW 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 6 SECONDS AND SE 1 FOOT AT 9 SECONDS.
MON 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 7 SECONDS AND
SE 1 FOOT AT 9 SECONDS.
TUE AND TUE NIGHT
NW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 6 SECONDS AND SE 1 FOOT AT 9 SECONDS.
WED
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 6 SECONDS AND SE 1 FOOT AT 10 SECONDS.
WED NIGHT AND THU
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS.
THU 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.
ANZ230-100000-
BOSTON HARBOR-
703 AM EDT SUN AUG 9 2026
TODAY
W WINDS AROUND 5 KT, INCREASING TO AROUND 10 KT WITH
GUSTS UP TO 20 KT THIS AFTERNOON. WAVES AROUND 2 FT.
TONIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
WAVES AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS.
MON
W WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
MON NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
TUE AND TUE NIGHT
NW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED
NE 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.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W. WAVES
AROUND 2 FT, THEN 1 FOOT OR LESS. A CHANCE OF SHOWERS AND TSTMS.
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.
ANZ236-100000-
NARRAGANSETT BAY-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT THIS AFTERNOON.
WAVES AROUND 2 FT.
TONIGHT
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
MON
W WINDS AROUND 5 KT, BECOMING S WITH GUSTS UP TO 20 KT IN
THE AFTERNOON. WAVES AROUND 2 FT.
MON NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
TUE AND TUE NIGHT
NW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED
NW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED NIGHT AND THU
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS.
THU NIGHT
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS AND TSTMS.
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.
ANZ280-100000-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
TONIGHT
SW WINDS AROUND 10 KT, BECOMING NW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 6 SECONDS AND E 1 FOOT
AT 9 SECONDS.
MON
NW WINDS AROUND 5 KT, BECOMING S 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND
E 1 FOOT AT 9 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND E 1 FOOT AT
9 SECONDS.
TUE
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT
AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS.
TUE NIGHT
W WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: W 2 FT AT 5 SECONDS AND SE 1 FOOT AT
10 SECONDS.
WED AND WED NIGHT
N WINDS 5 TO 10 KT, BECOMING S. SEAS AROUND
2 FT.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W 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.
ANZ281-100000-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY DENSE FOG THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
SW WINDS 10 TO 15 KT, BECOMING W 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS. PATCHY FOG. VSBY 1 TO
3 NM, DECREASING TO 1 NM OR LESS AFTER MIDNIGHT.
MON
W WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
8 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG IN THE EVENING. A CHANCE OF SHOWERS AFTER
MIDNIGHT. VSBY 1 NM OR LESS IN THE EVENING.
TUE AND TUE NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS.
WED AND WED NIGHT
NW WINDS 5 TO 10 KT, BECOMING SW. SEAS 2 TO
3 FT. WAVE DETAIL: W 3 FT AT 6 SECONDS AND E 2 FT AT 10 SECONDS.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT, BECOMING W. GUSTS UP
TO 20 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.
ANZ282-100000-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: SW 4 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY DENSE FOG THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SW 4 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM.
MON
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND E 1 FOOT AT
8 SECONDS. PATCHY FOG IN THE EVENING WITH VSBY 1 NM OR LESS.
TUE AND TUE NIGHT
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED AND WED NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SW 3 FT AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS. A CHANCE
OF SHOWERS.
THU AND THU NIGHT
W 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.
ANZ283-100000-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
703 AM EDT SUN AUG 9 2026
TODAY
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: SW 4 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT, BECOMING W 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
MON
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND E 1 FOOT AT
9 SECONDS. PATCHY FOG IN THE EVENING WITH VSBY 1 NM OR LESS.
TUE AND TUE NIGHT
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 3 FT AT 6 SECONDS AND SE 1 FOOT AT 9 SECONDS.
WED
W WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
THU
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
3 FT. A CHANCE OF SHOWERS AND TSTMS.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 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.
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