531
FZUS51 KBOX 280503
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
103 AM EDT FRI AUG 28 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-281800-
103 AM EDT FRI AUG 28 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRES E OF THE WATERS MOVES FARTHER OFFSHORE TODAY. A COLD FRONT
APPROACHES THE WATERS FROM THE W LATE TODAY. FRONTAL PASSAGE
FRI NIGHT LEADS TO HIGH PRES THIS WEEKEND. A BACKDOOR COLD FRONT MAY
APPROACH THE ERN MA WATERS MON MORNING.
ANZ250-281800-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SE 3 FT AT 8 SECONDS AND S 2 FT AT 4 SECONDS. PATCHY FOG.
FRI
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 8 SECONDS AND SW 2 FT AT 4 SECONDS. PATCHY FOG. VSBY 1 TO
3 NM, DECREASING TO 1 NM OR LESS IN THE AFTERNOON.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 8 SECONDS AND SW 1 FOOT AT 3 SECONDS. PATCHY FOG IN THE
EVENING WITH VSBY 1 NM OR LESS.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT
AT 7 SECONDS.
SAT NIGHT AND SUN
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SW 1 FOOT
AT 4 SECONDS.
SUN NIGHT
SW WINDS 10 TO 15 KT, BECOMING W 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 3 SECONDS AND SE 2 FT AT 8 SECONDS.
MON
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
MON NIGHT
SE WINDS AROUND 5 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS.
TUE AND TUE NIGHT
E WINDS 5 TO 10 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.
ANZ251-281800-
MASSACHUSETTS BAY AND IPSWICH BAY-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 2 FT AT 4 SECONDS AND E 2 FT AT 9 SECONDS. PATCHY FOG.
FRI
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 8 SECONDS AND S 1 FOOT AT 4 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS IN THE AFTERNOON. VSBY 1 TO 3 NM.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 8 SECONDS AND
S 1 FOOT AT 3 SECONDS. PATCHY FOG IN THE EVENING WITH VSBY 1 TO
3 NM.
SAT
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 7 SECONDS AND NE 2 FT AT
8 SECONDS.
SAT NIGHT AND SUN
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SE 2 FT AT 7 SECONDS.
SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 8 SECONDS.
MON
NE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
MON NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. A CHANCE
OF SHOWERS.
TUE
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. A CHANCE OF
SHOWERS.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS 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.
ANZ231-281800-
CAPE COD BAY-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 1 FOOT AT 2 SECONDS AND E 1 FOOT AT 12 SECONDS.
FRI
S WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 1 FOOT AT 2 SECONDS AND E 1 FOOT AT
10 SECONDS. PATCHY FOG IN THE MORNING. VSBY 1 TO 3 NM.
FRI NIGHT
SW WINDS AROUND 5 KT, BECOMING N 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 1 FOOT OR LESS, THEN
AROUND 2 FT AFTER MIDNIGHT. WAVE DETAIL: SW 1 FOOT AT 2 SECONDS
AND E 1 FOOT AT 10 SECONDS, BECOMING W 1 FOOT AT 2 SECONDS AND E
1 FOOT AT 9 SECONDS.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NW
1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 7 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS.
MON
N WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL: W
1 FOOT AT 2 SECONDS AND SE 1 FOOT AT 9 SECONDS.
MON NIGHT THROUGH TUE NIGHT
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR
LESS. 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.
ANZ254-281800-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 3 FT AT 8 SECONDS AND S 2 FT AT 4 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
FRI
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING NW 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM, DECREASING TO 1 NM
OR LESS AFTER MIDNIGHT.
SAT
N WINDS 10 TO 15 KT, BECOMING NE 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND
NW 2 FT AT 5 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS.
MON
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT
AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON NIGHT AND TUE
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A
CHANCE OF SHOWERS.
TUE NIGHT
E WINDS 5 TO 10 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.
ANZ255-281800-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: S 3 FT AT 7 SECONDS. A SLIGHT CHANCE OF SHOWERS.
FRI
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT
7 SECONDS. PATCHY FOG IN THE AFTERNOON WITH VSBY 1 NM OR LESS.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING NW 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS.
PATCHY FOG. VSBY 1 TO 3 NM.
SAT
NE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 7 SECONDS.
MON
W WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON NIGHT AND TUE
S WINDS 5 TO 10 KT, BECOMING E. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
TUE NIGHT
E WINDS AROUND 10 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.
ANZ256-281800-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: S 3 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
FRI
SW WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS.
PATCHY FOG. VSBY 1 NM OR LESS.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING NW 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS.
PATCHY FOG. VSBY 1 TO 3 NM.
SAT
N WINDS 10 TO 15 KT, BECOMING NE 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 8 SECONDS AND S
2 FT AT 6 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 2 FT AT 7 SECONDS.
MON THROUGH TUE
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 2 FT AT 5 SECONDS AND SE 2 FT AT 7 SECONDS.
TUE NIGHT
E 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.
ANZ232-281800-
NANTUCKET SOUND-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
FRI
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
1 FOOT AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING NW 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 8 SECONDS. PATCHY FOG.
VSBY 1 TO 3 NM.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 8 SECONDS AND W 1 FOOT AT 6 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND E
1 FOOT AT 7 SECONDS.
MON
W WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: W
2 FT AT 3 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON NIGHT AND TUE
SE WINDS 5 TO 10 KT, BECOMING E. SEAS AROUND
2 FT. A CHANCE OF SHOWERS.
TUE NIGHT
E WINDS AROUND 10 KT. SEAS 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.
ANZ233-281800-
VINEYARD SOUND-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS. PATCHY
FOG. VSBY 1 TO 3 NM.
FRI
S WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 7 SECONDS. PATCHY FOG. VSBY
1 NM OR LESS.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING NW 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND
SE 1 FOOT AT 10 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM.
SAT
N WINDS 10 TO 15 KT, BECOMING NE 5 TO 10 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS
AND NE 2 FT AT 8 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
W 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 E
1 FOOT AT 5 SECONDS.
MON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON NIGHT AND TUE
S WINDS 5 TO 10 KT, BECOMING E. SEAS AROUND
2 FT. A CHANCE OF SHOWERS.
TUE NIGHT
E WINDS 5 TO 10 KT. SEAS 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.
ANZ234-281800-
BUZZARDS BAY-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS. PATCHY
FOG. VSBY 1 TO 3 NM.
FRI
S WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT 5 SECONDS AND SE 1 FOOT AT
9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT 5 SECONDS
AND SE 1 FOOT AT 8 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM.
SAT
N WINDS 10 TO 15 KT, BECOMING E AROUND 5 KT IN THE
AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 5 SECONDS
AND SW 1 FOOT AT 6 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
W 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 E
1 FOOT AT 3 SECONDS.
MON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON NIGHT THROUGH TUE NIGHT
E WINDS 5 TO 10 KT. SEAS 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.
ANZ235-281800-
RHODE ISLAND SOUND-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 2 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS. PATCHY FOG.
VSBY 1 TO 3 NM.
FRI
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT
7 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS.
PATCHY FOG. VSBY 1 TO 3 NM.
SAT
N WINDS 10 TO 15 KT, BECOMING E 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 7 SECONDS AND
SW 2 FT AT 6 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND
SE 2 FT AT 7 SECONDS.
MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON NIGHT THROUGH TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 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.
ANZ237-281800-
BLOCK ISLAND SOUND-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 2 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS. PATCHY FOG.
VSBY 1 TO 3 NM.
FRI
SW WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS.
PATCHY FOG. VSBY 1 NM OR LESS.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 7 SECONDS. PATCHY FOG IN THE
EVENING WITH VSBY 1 TO 3 NM.
SAT
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS.
MON AND MON NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: W 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
TUE AND TUE NIGHT
E WINDS 5 TO 10 KT. SEAS 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.
ANZ230-281800-
BOSTON HARBOR-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
FRI
SE WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT IN THE
AFTERNOON. WAVES 1 FOOT OR LESS. PATCHY FOG IN THE MORNING. A
CHANCE OF SHOWERS AND TSTMS IN THE AFTERNOON.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
SAT
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
SAT NIGHT THROUGH SUN NIGHT
W WINDS 5 TO 10 KT. WAVES AROUND
2 FT.
MON
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
MON NIGHT THROUGH TUE NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FOOT
OR LESS. A CHANCE OF SHOWERS.
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.
ANZ236-281800-
NARRAGANSETT BAY-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS AROUND 5 KT. WAVES AROUND 2 FT. PATCHY
FOG. VSBY 1 TO 3 NM.
FRI
S WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT IN THE
AFTERNOON. WAVES AROUND 2 FT. PATCHY FOG. VSBY 1 NM OR LESS,
INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT. WAVES
AROUND 2 FT. PATCHY FOG IN THE EVENING.
SAT
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. WAVES
AROUND 2 FT.
SAT NIGHT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. WAVES AROUND 2 FT.
MON
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
MON NIGHT THROUGH TUE NIGHT
E WINDS 5 TO 10 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.
ANZ280-281800-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 2 FT AT
8 SECONDS. PATCHY FOG.
FRI
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: SE 3 FT
AT 8 SECONDS AND S 2 FT AT 4 SECONDS. PATCHY FOG. VSBY 1 NM OR
LESS.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL:
S 3 FT AT 7 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: NE 4 FT
AT 7 SECONDS AND NW 2 FT AT 4 SECONDS.
SAT NIGHT AND SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SW 2 FT AT
4 SECONDS.
SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 2 FT AT
8 SECONDS.
MON
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
MON NIGHT THROUGH TUE NIGHT
SE WINDS 5 TO 10 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.
ANZ281-281800-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND SE 3 FT AT
8 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF TSTMS. VSBY 1 TO 3 NM.
FRI
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT
7 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE MORNING. VSBY
1 NM OR LESS.
FRI NIGHT
SW WINDS 5 TO 10 KT, BECOMING W 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: E 3 FT
AT 7 SECONDS AND SW 2 FT AT 6 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND S
2 FT AT 6 SECONDS.
MON
NW WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: W 2 FT
AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
TUE AND TUE NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE
OF SHOWERS.
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.
ANZ282-281800-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE
DETAIL: SE 4 FT AT 7 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AND
TSTMS. VSBY 1 TO 3 NM.
FRI
S WINDS AROUND 5 KT. SEAS 4 TO 5 FT. WAVE DETAIL: S 4 FT
AT 7 SECONDS.
FRI NIGHT
W WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 7 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM.
SAT
N WINDS 10 TO 15 KT, BECOMING NE 5 TO 10 KT IN THE
AFTERNOON. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS.
SAT NIGHT
NE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SE 2 FT AT 7 SECONDS.
SUN AND SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SW 2 FT AT 5 SECONDS AND SE 2 FT AT 7 SECONDS.
MON
W WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
MON NIGHT AND TUE
W WINDS 5 TO 10 KT, BECOMING E. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS AND TSTMS.
TUE NIGHT
E WINDS AROUND 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
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.
ANZ283-281800-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
103 AM EDT FRI AUG 28 2026
REST OF TONIGHT
SW WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE
DETAIL: S 4 FT AT 6 SECONDS AND SE 3 FT AT 9 SECONDS. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
FRI
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS.
FRI NIGHT
W WINDS 5 TO 10 KT, BECOMING NW 10 TO 15 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS.
SAT
NE WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS AROUND 3 FT. WAVE DETAIL: E 3 FT AT 8 SECONDS AND
S 2 FT AT 6 SECONDS.
SAT NIGHT AND SUN
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS.
SUN NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT, BUILDING TO
3 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND
SE 2 FT AT 8 SECONDS, BECOMING SW 3 FT AT 4 SECONDS AND SE 1 FOOT
AT 8 SECONDS.
MON
W WINDS AROUND 10 KT. SEAS 3 TO 4 FT.
MON NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. A CHANCE OF
SHOWERS.
TUE
NE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
TUE NIGHT
E WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
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.
FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT
WWW.WEATHER.GOV/BOSTON
YOU CAN FOLLOW US ON FACEBOOK AT
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.BOSTON.GOV
YOU CAN FOLLOW US ON TWITTER AT
@NWSBOSTON
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page