616
FZUS51 KBOX 230205
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1004 PM EDT WED JUL 22 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-231500-
1004 PM EDT WED JUL 22 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
A COLD FRONT APPROACHES THE WATERS FROM THE WEST TODAY. GUSTY SW
FLOW WILL CONTINUE TO PROMOTE ROUGH SEAS ESPECIALLY ACROSS THE OPEN
WATERS SOUTH OF THE OUTER-ISLANDS TODAY. THIS COLD FRONT WILL CROSS
THE WATERS LATE TONIGHT INTO EARLY THU. HIGH PRES BUILDS ACROSS THE
WATERS LATER THU AND INTO THE WEEKEND, BRINGING MORE PLEASANT
BOATING WEATHER TO THE REGION THROUGH THE WEEKEND.
ANZ250-231500-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
1004 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY
OVERNIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND SE 3 FT AT
10 SECONDS.
THU
NW WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND W 1 FOOT AT
3 SECONDS.
THU NIGHT
S WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 8 SECONDS AND SW 1 FOOT AT 3 SECONDS.
FRI
SW WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 8 SECONDS AND W 1 FOOT AT
3 SECONDS.
FRI NIGHT
SE WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND S 1 FOOT
AT 2 SECONDS.
SAT AND SAT NIGHT
NE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 7 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 5 TO 10 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.
ANZ251-231500-
MASSACHUSETTS BAY AND IPSWICH BAY-
1004 PM EDT WED JUL 22 2026
OVERNIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 6 SECONDS AND W 1 FOOT AT 3 SECONDS.
THU
NW WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 9 SECONDS AND NW 1 FOOT AT
2 SECONDS.
THU NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND SE 2 FT AT
8 SECONDS.
FRI
SW WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS AND S 1 FOOT AT
9 SECONDS.
FRI NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND SE 1 FOOT AT
3 SECONDS.
SAT AND SAT NIGHT
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 7 SECONDS AND S 2 FT AT 8 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 5 TO 10 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.
ANZ231-231500-
CAPE COD BAY-
1004 PM EDT WED JUL 22 2026
OVERNIGHT
SW WINDS 5 TO 10 KT, BECOMING NW. SEAS AROUND 2 FT.
WAVE DETAIL: SE 2 FT AT 10 SECONDS AND SW 1 FOOT AT 3 SECONDS. A
SLIGHT CHANCE OF SHOWERS.
THU
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 9 SECONDS AND E 2 FT AT
11 SECONDS.
THU NIGHT
SE WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS. WAVE
DETAIL: SE 2 FT AT 8 SECONDS AND W 1 FOOT AT 3 SECONDS, BECOMING
SW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT 4 SECONDS.
FRI
NW WINDS AROUND 5 KT, BECOMING E AROUND 5 KT IN THE
AFTERNOON. SEAS 1 FOOT OR LESS. WAVE DETAIL: SW 1 FOOT AT
3 SECONDS AND E 1 FOOT AT 8 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
NE WINDS AROUND 5 KT. SEAS AROUND
2 FT. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND S 1 FOOT AT
7 SECONDS.
SUN THROUGH MON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 8 SECONDS AND E 1 FOOT AT 5 SECONDS.
MON NIGHT
SW 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.
ANZ254-231500-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
1004 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
OVERNIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING NW. SEAS 5 TO 7 FT. WAVE DETAIL: S 7 FT AT 9 SECONDS AND
SE 4 FT AT 10 SECONDS. PATCHY FOG. A SLIGHT CHANCE OF TSTMS. A
SLIGHT CHANCE OF SHOWERS, THEN A CHANCE OF SHOWERS. VSBY 1 NM OR
LESS.
THU
N WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: S 5 FT AT
9 SECONDS AND SE 4 FT AT 10 SECONDS.
THU NIGHT
SE WINDS AROUND 5 KT, BECOMING NW AROUND 5 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 8 SECONDS AND SE
4 FT AT 8 SECONDS.
FRI
NE WINDS AROUND 5 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT
AT 8 SECONDS AND SE 2 FT AT 7 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND S 1 FOOT AT
3 SECONDS.
SUN THROUGH MON NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: SE 3 FT AT 7 SECONDS AND S 2 FT AT 8 SECONDS.
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.
ANZ255-231500-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
1004 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
OVERNIGHT
SW WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W. SEAS 5 TO 8 FT. WAVE DETAIL: S 8 FT AT 9 SECONDS AND
NW 4 FT AT 5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR
LESS.
THU
NE WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: S 6 FT
AT 9 SECONDS AND W 4 FT AT 4 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 TO 3 NM.
THU NIGHT
E WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
3 TO 5 FT. WAVE DETAIL: S 5 FT AT 8 SECONDS AND NW 3 FT AT
8 SECONDS.
FRI
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 7 SECONDS AND W 1 FOOT AT 5 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND W 2 FT AT 5 SECONDS.
SUN THROUGH MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS AND S 1 FOOT AT 4 SECONDS.
MON NIGHT
SW 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.
ANZ256-231500-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
1004 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
OVERNIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING N. SEAS 5 TO 8 FT. WAVE DETAIL: S 7 FT AT 9 SECONDS AND
N 3 FT AT 6 SECONDS. A SLIGHT CHANCE OF SHOWERS.
THU
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS 4 TO
6 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND W 3 FT AT 4 SECONDS.
THU NIGHT
SE WINDS AROUND 5 KT, BECOMING E AROUND 5 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: W 4 FT AT 7 SECONDS AND S
4 FT AT 8 SECONDS.
FRI
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 7 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NW 3 FT AT 6 SECONDS AND SE 3 FT AT 8 SECONDS.
SUN THROUGH MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS AND NW 2 FT AT 3 SECONDS.
MON NIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 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.
ANZ232-231500-
NANTUCKET SOUND-
1004 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY
OVERNIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING NW 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SW 3 FT AT
4 SECONDS AND SW 2 FT AT 9 SECONDS. A SLIGHT CHANCE OF SHOWERS,
THEN A CHANCE OF SHOWERS.
THU
N WINDS AROUND 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS AND E 2 FT AT
8 SECONDS.
THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 1 FOOT AT 4 SECONDS AND SW 1 FOOT AT
8 SECONDS.
FRI
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
1 FOOT AT 4 SECONDS AND SW 1 FOOT AT 7 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND
2 FT. WAVE DETAIL: SW 1 FOOT AT 4 SECONDS AND E 1 FOOT AT
4 SECONDS.
SUN THROUGH MON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 1 FOOT AT 4 SECONDS AND S 1 FOOT AT 7 SECONDS.
MON NIGHT
SW 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.
ANZ233-231500-
VINEYARD SOUND-
1004 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY
OVERNIGHT
SW WINDS 10 TO 15 KT, BECOMING N 5 TO 10 KT. SEAS
3 TO 5 FT. WAVE DETAIL: SW 5 FT AT 9 SECONDS AND S 2 FT AT
5 SECONDS. A SLIGHT CHANCE OF SHOWERS.
THU
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS 2 TO
4 FT. WAVE DETAIL: SW 4 FT AT 8 SECONDS AND NW 3 FT AT 4 SECONDS.
THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 8 SECONDS AND E 1 FOOT AT
8 SECONDS.
FRI
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND E 2 FT AT
8 SECONDS.
FRI NIGHT AND SAT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 4 SECONDS.
SAT NIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 4 SECONDS.
SUN THROUGH MON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
MON NIGHT
SW 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.
ANZ234-231500-
BUZZARDS BAY-
1004 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY
OVERNIGHT
W WINDS AROUND 10 KT, BECOMING N. SEAS 2 TO 4 FT.
WAVE DETAIL: S 2 FT AT 2 SECONDS AND SW 2 FT AT 5 SECONDS. A
SLIGHT CHANCE OF SHOWERS.
THU
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS 2 TO
3 FT. WAVE DETAIL: NE 2 FT AT 7 SECONDS AND SW 2 FT AT 9 SECONDS.
THU NIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 8 SECONDS AND SW 1 FOOT AT
4 SECONDS.
FRI
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 7 SECONDS AND SW 1 FOOT AT
4 SECONDS.
FRI NIGHT AND SAT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 7 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
1 FOOT OR LESS. WAVE DETAIL: E 1 FOOT AT 2 SECONDS AND S 1 FOOT
AT 3 SECONDS.
SUN THROUGH MON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
MON NIGHT
SW 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.
ANZ235-231500-
RHODE ISLAND SOUND-
1004 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON
OVERNIGHT
W WINDS 10 TO 15 KT, BECOMING N. SEAS 4 TO 6 FT.
WAVE DETAIL: S 6 FT AT 9 SECONDS AND S 3 FT AT 6 SECONDS. A
SLIGHT CHANCE OF SHOWERS.
THU
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: S 5 FT AT 9 SECONDS AND W 3 FT AT
5 SECONDS.
THU NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 8 SECONDS AND SW 3 FT AT
7 SECONDS.
FRI
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS.
FRI NIGHT AND SAT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND S 2 FT AT 7 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND S 1 FOOT AT
3 SECONDS.
SUN THROUGH MON
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
MON NIGHT
SW 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.
ANZ237-231500-
BLOCK ISLAND SOUND-
1004 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON
OVERNIGHT
W WINDS 5 TO 10 KT, BECOMING N. SEAS 4 TO 6 FT. WAVE
DETAIL: S 5 FT AT 9 SECONDS AND E 2 FT AT 10 SECONDS. A SLIGHT
CHANCE OF SHOWERS.
THU
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: S 5 FT AT 9 SECONDS AND W 1 FOOT AT
3 SECONDS.
THU NIGHT
S WINDS AROUND 5 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S
4 FT AT 8 SECONDS AND SW 2 FT AT 3 SECONDS.
FRI
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND E 2 FT AT
8 SECONDS.
FRI NIGHT AND SAT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 7 SECONDS AND SE 2 FT AT 8 SECONDS.
SAT NIGHT
E WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND S 1 FOOT AT
3 SECONDS.
SUN THROUGH MON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
MON NIGHT
SW 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.
ANZ230-231500-
BOSTON HARBOR-
1004 PM EDT WED JUL 22 2026
OVERNIGHT
W WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
THU
NW WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
THU NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
FRI
SW WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
FRI NIGHT
SE WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
SAT AND SAT NIGHT
N WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
SUN THROUGH MON
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES 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.
ANZ236-231500-
NARRAGANSETT BAY-
1004 PM EDT WED JUL 22 2026
OVERNIGHT
W WINDS 5 TO 10 KT, BECOMING N. WAVES 2 TO 4 FT. A
SLIGHT CHANCE OF SHOWERS.
THU
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. WAVES
2 TO 3 FT.
THU NIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. WAVES
2 TO 3 FT.
FRI
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. WAVES
AROUND 2 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT, BECOMING N AFTER MIDNIGHT.
WAVES AROUND 2 FT.
SAT AND SAT NIGHT
N WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SUN THROUGH MON
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
MON NIGHT
SW 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.
ANZ280-231500-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
1004 PM EDT WED JUL 22 2026
OVERNIGHT
SW WINDS 10 TO 15 KT, BECOMING W. GUSTS UP TO 25 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: S 7 FT AT 9 SECONDS AND SE 3 FT AT
10 SECONDS. PATCHY FOG. A SLIGHT CHANCE OF SHOWERS. VSBY 1 TO
3 NM.
THU
NW WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SE 5 FT
AT 10 SECONDS AND W 1 FOOT AT 5 SECONDS.
THU NIGHT
SW WINDS AROUND 5 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 8 SECONDS AND SE 3 FT AT 8 SECONDS.
FRI
SW WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 8 SECONDS AND SE 2 FT AT
7 SECONDS.
FRI NIGHT
SE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SE 2 FT AT 7 SECONDS AND S 1 FOOT AT 2 SECONDS.
SAT AND SAT NIGHT
NE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 7 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 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.
ANZ281-231500-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
1004 PM EDT WED JUL 22 2026
OVERNIGHT
SW WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT.
GUSTS UP TO 25 KT. SEAS 6 TO 9 FT. WAVE DETAIL: S 9 FT AT
9 SECONDS AND SE 4 FT AT 10 SECONDS. PATCHY FOG. A SLIGHT CHANCE
OF SHOWERS AND TSTMS, THEN A CHANCE OF SHOWERS AND TSTMS. VSBY
1 NM OR LESS.
THU
NW WINDS 5 TO 10 KT, BECOMING N IN THE AFTERNOON. SEAS
5 TO 7 FT. WAVE DETAIL: S 7 FT AT 9 SECONDS AND SE 4 FT AT
10 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH
VSBY 1 TO 3 NM.
THU NIGHT
E WINDS AROUND 5 KT, BECOMING N AFTER MIDNIGHT. SEAS
4 TO 6 FT. WAVE DETAIL: S 5 FT AT 8 SECONDS AND E 2 FT AT
7 SECONDS.
FRI
NE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 8 SECONDS AND E 2 FT AT 7 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
FRI NIGHT THROUGH SAT NIGHT
NE WINDS 5 TO 10 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS.
SUN THROUGH MON NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
WAVE DETAIL: E 3 FT AT 8 SECONDS AND SE 3 FT AT 8 SECONDS.
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.
ANZ282-231500-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
1004 PM EDT WED JUL 22 2026
OVERNIGHT
SW WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT.
GUSTS UP TO 25 KT. SEAS 7 TO 9 FT. WAVE DETAIL: S 9 FT AT
9 SECONDS AND E 3 FT AT 10 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS WITH A SLIGHT CHANCE OF TSTMS, THEN SHOWERS LIKELY WITH A
CHANCE OF TSTMS. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS.
THU
N WINDS AROUND 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
6 TO 8 FT, SUBSIDING TO 5 TO 6 FT IN THE AFTERNOON. WAVE DETAIL:
S 7 FT AT 8 SECONDS AND NW 2 FT AT 4 SECONDS, BECOMING S 6 FT AT
8 SECONDS AND N 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS. PATCHY
FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
THU NIGHT
NE WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: S
6 FT AT 8 SECONDS AND S 2 FT AT 4 SECONDS.
FRI
NE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 7 SECONDS AND E 2 FT AT 7 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
FRI NIGHT THROUGH SAT NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND W 1 FOOT AT
4 SECONDS.
SUN THROUGH MON NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
WAVE DETAIL: E 3 FT AT 7 SECONDS AND SW 2 FT AT 5 SECONDS.
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.
ANZ283-231500-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
1004 PM EDT WED JUL 22 2026
OVERNIGHT
SW WINDS AROUND 15 KT, BECOMING W. GUSTS UP TO
20 KT. SEAS 8 TO 9 FT, SUBSIDING TO 6 TO 8 FT. WAVE DETAIL: S
8 FT AT 9 SECONDS AND NW 2 FT AT 4 SECONDS, BECOMING S 8 FT AT
9 SECONDS AND N 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS. PATCHY FOG WITH VSBY 1 NM OR LESS.
THU
N WINDS 10 TO 15 KT, BECOMING NE 5 TO 10 KT IN THE
AFTERNOON. SEAS 5 TO 7 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND
NW 3 FT AT 4 SECONDS. PATCHY FOG IN THE MORNING. A CHANCE OF
SHOWERS IN THE MORNING WITH VSBY 1 TO 3 NM.
THU NIGHT
NE WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: S
5 FT AT 8 SECONDS AND NE 3 FT AT 4 SECONDS.
FRI
NE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT
AT 7 SECONDS AND E 2 FT AT 8 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND NW 3 FT AT 6 SECONDS.
SUN THROUGH MON
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: E 4 FT AT 7 SECONDS AND SE 4 FT AT 8 SECONDS.
MON NIGHT
SW 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