598
FZUS51 KBOX 222304
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
704 PM EDT WED JUL 22 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-231200-
704 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.
ANZ250-231200-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
704 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SE
4 FT AT 9 SECONDS AND SW 2 FT AT 4 SECONDS. A SLIGHT CHANCE OF
SHOWERS THIS EVENING.
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.
ANZ251-231200-
MASSACHUSETTS BAY AND IPSWICH BAY-
704 PM EDT WED JUL 22 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 6 SECONDS AND SW 1 FOOT AT 3 SECONDS. A SLIGHT CHANCE OF
SHOWERS AND TSTMS THIS EVENING.
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.
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.
ANZ231-231200-
CAPE COD BAY-
704 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
4 FT AT 9 SECONDS AND SW 2 FT 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.
ANZ254-231200-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
704 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
TONIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING
NW 10 TO 15 KT AFTER MIDNIGHT. 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 SHOWERS THIS EVENING, THEN A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS AFTER MIDNIGHT. 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.
ANZ255-231200-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
704 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
TONIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING
W 10 TO 15 KT AFTER MIDNIGHT. SEAS 5 TO 8 FT. WAVE DETAIL: S 8 FT
AT 9 SECONDS AND NW 4 FT AT 5 SECONDS. A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF TSTMS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 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.
ANZ256-231200-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
704 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY EVENING
TONIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING
N AROUND 10 KT AFTER MIDNIGHT. SEAS 5 TO 8 FT. WAVE DETAIL: S
7 FT AT 9 SECONDS AND S 3 FT AT 4 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.
ANZ232-231200-
NANTUCKET SOUND-
704 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY
TONIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SW
3 FT AT 4 SECONDS AND E 3 FT AT 10 SECONDS. A SLIGHT CHANCE OF
SHOWERS THIS EVENING, THEN A CHANCE OF SHOWERS AFTER MIDNIGHT.
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 E 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: E 1 FOOT AT 4 SECONDS AND SW 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.
ANZ233-231200-
VINEYARD SOUND-
704 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY
TONIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING
N 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SW 5 FT
AT 9 SECONDS AND SW 4 FT AT 6 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.
ANZ234-231200-
BUZZARDS BAY-
704 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT THURSDAY
TONIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING
N 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND S 3 FT AT 9 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.
ANZ235-231200-
RHODE ISLAND SOUND-
704 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON
TONIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING
N AROUND 10 KT AFTER MIDNIGHT. SEAS 5 TO 7 FT. WAVE DETAIL: S
7 FT AT 9 SECONDS AND SW 3 FT AT 5 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.
ANZ237-231200-
BLOCK ISLAND SOUND-
704 PM EDT WED JUL 22 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
N 5 TO 10 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: S 5 FT
AT 9 SECONDS AND SW 2 FT AT 4 SECONDS. A SLIGHT CHANCE OF SHOWERS
THIS EVENING.
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.
ANZ230-231200-
BOSTON HARBOR-
704 PM EDT WED JUL 22 2026
TONIGHT
W WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT THIS EVENING, THEN 1 FOOT OR LESS. A
SLIGHT CHANCE OF SHOWERS AND TSTMS THIS EVENING.
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.
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.
ANZ236-231200-
NARRAGANSETT BAY-
704 PM EDT WED JUL 22 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
N 5 TO 10 KT AFTER MIDNIGHT. WAVES 2 TO 4 FT. A SLIGHT CHANCE OF
SHOWERS THIS EVENING.
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.
ANZ280-231200-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
704 PM EDT WED JUL 22 2026
TONIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT, BECOMING
W AROUND 10 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 5 TO
8 FT. WAVE DETAIL: SE 7 FT AT 9 SECONDS AND SW 2 FT AT 4 SECONDS.
PATCHY FOG THIS EVENING. A SLIGHT CHANCE OF SHOWERS AFTER
MIDNIGHT. VSBY 1 TO 3 NM THIS EVENING.
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.
ANZ281-231200-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
704 PM EDT WED JUL 22 2026
TONIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT,
DIMINISHING TO 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 7 TO 10 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 THIS
EVENING, THEN A CHANCE OF SHOWERS AND TSTMS AFTER MIDNIGHT. 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.
ANZ282-231200-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
704 PM EDT WED JUL 22 2026
TONIGHT
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT,
DIMINISHING TO 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 7 TO 10 FT. WAVE DETAIL: S 10 FT AT 9 SECONDS AND E 3 FT AT
10 SECONDS. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF TSTMS
THIS EVENING, THEN SHOWERS LIKELY WITH A CHANCE OF TSTMS AFTER
MIDNIGHT. PATCHY FOG AFTER MIDNIGHT WITH VSBY 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.
ANZ283-231200-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
704 PM EDT WED JUL 22 2026
TONIGHT
SW WINDS 15 TO 20 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 8 TO 9 FT, SUBSIDING TO 6 TO
8 FT AFTER MIDNIGHT. WAVE DETAIL: S 9 FT AT 9 SECONDS AND S 3 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 AFTER MIDNIGHT 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.
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