931
FZUS51 KBOX 270504
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
104 AM EDT MON JUL 27 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-271800-
104 AM EDT MON JUL 27 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
CALM SEAS CONTINUE INTO MON WITH HIGH PRES OVER THE
WATERS. INCREASING RISK FOR ROUGH SEAS TOWARDS THE MIDDLE OF NEXT
WEEK AS LOW PRESSURE APPROACHES FROM THE W. THIS WILL ALSO BRING
PERIODIC CHANCES FOR SHOWERS AND PERHAPS THUNDERSTORMS TUE THROUGH
MID-WEEK. ROUGH SEAS SHOULD START TO DIMINISH HEADING INTO THE BACK
HALF OF THE WEEK.
ANZ250-271800-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
NE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: E 3 FT AT 7 SECONDS.
MON
NE WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT
AT 7 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 7 SECONDS AND S 1 FOOT AT 3 SECONDS.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 25 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: E 3 FT AT
8 SECONDS AND S 2 FT AT 3 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 2 FT AT
6 SECONDS.
WED
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG. SCATTERED SHOWERS IN THE MORNING, THEN SHOWERS IN THE
AFTERNOON WITH VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. SHOWERS WITH A CHANCE OF TSTMS. PATCHY FOG IN THE
EVENING. VSBY 1 TO 3 NM.
THU
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. SHOWERS LIKELY.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 6 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
FRI NIGHT
SW WINDS AROUND 5 KT. SEAS 2 TO 4 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.
ANZ251-271800-
MASSACHUSETTS BAY AND IPSWICH BAY-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
N WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE
DETAIL: E 2 FT AT 7 SECONDS.
MON
N WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 7 SECONDS AND S 1 FOOT AT 2 SECONDS.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 25 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT
AT 3 SECONDS AND E 2 FT AT 7 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 2 FT AT
5 SECONDS. SCATTERED SHOWERS AFTER MIDNIGHT.
WED AND WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND SE 2 FT AT
5 SECONDS. SHOWERS. A CHANCE OF TSTMS. PATCHY FOG IN THE MORNING.
PATCHY FOG THROUGH THE NIGHT. VSBY 1 TO 3 NM.
THU
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS AROUND
3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI AND FRI NIGHT
NE WINDS 5 TO 10 KT, BECOMING SW. SEAS 2 TO
4 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.
ANZ231-271800-
CAPE COD BAY-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
NE WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NE 2 FT AT 8 SECONDS AND NE 1 FOOT AT 3 SECONDS.
MON
NE WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 8 SECONDS AND N 1 FOOT AT 4 SECONDS.
MON NIGHT
SE WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 5 SECONDS AND E 1 FOOT
AT 11 SECONDS.
TUE
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 8 SECONDS AND S 1 FOOT AT 2 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 1 FOOT AT 2 SECONDS AND
E 1 FOOT AT 5 SECONDS. SCATTERED SHOWERS AFTER MIDNIGHT.
WED AND WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND E 2 FT AT
3 SECONDS. SHOWERS. A CHANCE OF TSTMS THROUGH THE NIGHT. PATCHY
FOG. VSBY 1 TO 3 NM.
THU
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. SHOWERS LIKELY.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING SW. SEAS 2 TO
3 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.
ANZ254-271800-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS AND NW 1 FOOT AT 3 SECONDS.
MON
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
MON NIGHT
SE WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND SE 3 FT AT
8 SECONDS.
TUE
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 8 SECONDS AND E 2 FT AT 7 SECONDS. PATCHY FOG. VSBY 1 NM OR
LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
TUE NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND S
2 FT AT 4 SECONDS. SHOWERS LIKELY WITH A CHANCE OF TSTMS. PATCHY
FOG IN THE EVENING WITH VSBY 1 NM OR LESS.
WED AND WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND SE 2 FT AT
11 SECONDS. SCATTERED SHOWERS IN THE MORNING, THEN SHOWERS
LIKELY. PATCHY FOG IN THE MORNING. PATCHY FOG THROUGH THE NIGHT.
VSBY 1 TO 3 NM.
THU AND THU NIGHT
NE WINDS 10 TO 15 KT, BECOMING N. GUSTS UP
TO 20 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 TO 10 KT. SEAS 4 TO 6 FT.
FRI NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 4 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.
ANZ255-271800-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 2 FT AT 6 SECONDS AND SE 2 FT AT 7 SECONDS.
MON
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 2 FT
AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON NIGHT
SE WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND SW 1 FOOT
AT 3 SECONDS.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND S
2 FT AT 3 SECONDS. WITH PATCHY FOG. VSBY 1 TO 3 NM.
TUE NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. WAVE DETAIL:
SE 3 FT AT 4 SECONDS AND SE 2 FT AT 8 SECONDS. SHOWERS LIKELY
WITH A CHANCE OF TSTMS IN THE EVENING, THEN SCATTERED SHOWERS
AFTER MIDNIGHT. PATCHY FOG IN THE EVENING WITH VSBY 1 NM OR LESS.
WED AND WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 5 FT. WAVE DETAIL: SE 5 FT AT 6 SECONDS AND NW 3 FT AT
7 SECONDS. WIDESPREAD SHOWERS. A CHANCE OF SHOWERS AFTER
MIDNIGHT. PATCHY FOG. VSBY 1 TO 3 NM.
THU
NE WINDS 15 TO 20 KT. SEAS 4 TO 5 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT, BECOMING W 5 TO 10 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.
ANZ256-271800-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
N WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: E 2 FT AT 7 SECONDS AND N 1 FOOT AT 4 SECONDS.
MON
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND N 1 FOOT AT
4 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
2 FT AT 7 SECONDS AND SE 2 FT AT 8 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND S 2 FT AT
4 SECONDS.
TUE NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE 3 FT AT
8 SECONDS. PATCHY FOG. SCATTERED SHOWERS IN THE EVENING, THEN
NUMEROUS SHOWERS AFTER MIDNIGHT. VSBY 1 TO 3 NM.
WED AND WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 5 TO 6 FT. WAVE DETAIL: S 6 FT AT 7 SECONDS AND SE 1 FOOT AT
10 SECONDS. SHOWERS LIKELY. PATCHY FOG. VSBY 1 TO 3 NM.
THU AND THU NIGHT
NE WINDS 15 TO 20 KT, BECOMING N 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 4 TO 5 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING W. 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.
ANZ232-271800-
NANTUCKET SOUND-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
N WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NE 2 FT AT 6 SECONDS AND NW 1 FOOT AT 6 SECONDS.
MON
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
1 FOOT AT 6 SECONDS AND NW 1 FOOT AT 6 SECONDS.
MON NIGHT
SE WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT.
SEAS AROUND 2 FT. WAVE DETAIL: S 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 7 SECONDS.
TUE
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 3 SECONDS AND E 2 FT AT 10 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SE 2 FT AT 4 SECONDS AND SE 1 FOOT AT 8 SECONDS. SCATTERED
SHOWERS AFTER MIDNIGHT.
WED AND WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND S 1 FOOT AT
5 SECONDS. WIDESPREAD SHOWERS. PATCHY FOG. VSBY 1 TO 3 NM.
THU AND THU NIGHT
NE WINDS AROUND 15 KT, BECOMING N. GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING W. 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.
ANZ233-271800-
VINEYARD SOUND-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
N WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NE 1 FOOT AT 3 SECONDS AND W 1 FOOT AT 5 SECONDS.
MON
N WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 3 SECONDS AND NW 1 FOOT AT
6 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 7 SECONDS.
TUE
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 3 SECONDS AND E 2 FT AT 7 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 5 SECONDS AND NE 1 FOOT AT 10 SECONDS. SCATTERED SHOWERS
AFTER MIDNIGHT.
WED AND WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND E 3 FT AT
4 SECONDS. WIDESPREAD SHOWERS. PATCHY FOG. VSBY 1 TO 3 NM.
THU AND THU NIGHT
NE WINDS 15 TO 20 KT, BECOMING N 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS AROUND 10 KT, BECOMING W. 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.
ANZ234-271800-
BUZZARDS BAY-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
N WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: NE 1 FOOT AT 2 SECONDS AND W 1 FOOT AT 6 SECONDS.
MON
N WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: NE 1 FOOT AT 2 SECONDS AND NW 1 FOOT
AT 6 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND
2 FT AFTER MIDNIGHT. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 6 SECONDS, BECOMING SW 1 FOOT AT 3 SECONDS AND SE
1 FOOT AT 7 SECONDS.
TUE
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 3 SECONDS AND SE 2 FT AT 9 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS AND S 2 FT AT 3 SECONDS. SCATTERED SHOWERS
AFTER MIDNIGHT.
WED AND WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 3 SECONDS AND S 3 FT AT
6 SECONDS. WIDESPREAD SHOWERS. PATCHY FOG. VSBY 1 TO 3 NM.
THU
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING W. 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.
ANZ235-271800-
RHODE ISLAND SOUND-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 2 FT AT 7 SECONDS AND NE 1 FOOT AT 4 SECONDS.
MON
N WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND N 1 FOOT AT
4 SECONDS.
MON NIGHT
S WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SE 2 FT AT 7 SECONDS AND SW 1 FOOT AT 2 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND S 2 FT AT
3 SECONDS.
TUE NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS. PATCHY FOG.
SCATTERED SHOWERS. A CHANCE OF TSTMS IN THE EVENING WITH VSBY
1 TO 3 NM.
WED AND WED NIGHT
NE WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: S 5 FT AT 7 SECONDS AND SE 1 FOOT AT
10 SECONDS. WIDESPREAD SHOWERS. PATCHY FOG. VSBY 1 TO 3 NM.
THU
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS AND TSTMS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI AND FRI NIGHT
NW WINDS AROUND 10 KT, BECOMING W. SEAS 2 TO
3 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.
ANZ237-271800-
BLOCK ISLAND SOUND-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
N WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 2 FT AT 7 SECONDS AND N 1 FOOT AT 6 SECONDS.
MON
NE WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS AND N 1 FOOT AT
4 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 7 SECONDS AND SW 1 FOOT AT 2 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT
AT 4 SECONDS AND SE 2 FT AT 7 SECONDS. SCATTERED SHOWERS IN THE
AFTERNOON.
TUE NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL:
SE 3 FT AT 6 SECONDS. SCATTERED SHOWERS IN THE EVENING, THEN
NUMEROUS SHOWERS AFTER MIDNIGHT. PATCHY FOG AFTER MIDNIGHT WITH
VSBY 1 TO 3 NM.
WED
E WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 5 FT AT 6 SECONDS AND SE 1 FOOT AT
10 SECONDS. PATCHY FOG. WIDESPREAD SHOWERS. VSBY 1 TO 3 NM.
WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. SHOWERS LIKELY. A CHANCE OF TSTMS IN THE EVENING.
PATCHY FOG IN THE EVENING WITH VSBY 1 TO 3 NM.
THU AND THU NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
DIMINISHING TO AROUND 10 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS
AND TSTMS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING SW. SEAS 2 TO
3 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.
ANZ230-271800-
BOSTON HARBOR-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
N WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.
MON
N WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
MON NIGHT
SE WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. WAVES 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON.
TUE NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
AROUND 2 FT. SCATTERED SHOWERS AFTER MIDNIGHT.
WED AND WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
WAVES 2 TO 3 FT. SHOWERS. A CHANCE OF TSTMS. PATCHY FOG IN THE
MORNING. PATCHY FOG THROUGH THE NIGHT. VSBY 1 TO 3 NM.
THU
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES 2 TO
3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
AROUND 2 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI AND FRI NIGHT
NE WINDS 5 TO 10 KT, BECOMING SW. WAVES
1 FOOT OR LESS.
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.
ANZ236-271800-
NARRAGANSETT BAY-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
N WINDS AROUND 5 KT. WAVES AROUND 2 FT.
MON
N WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. WAVES
AROUND 2 FT.
MON NIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT. PATCHY FOG
AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. WAVES AROUND 2 FT.
TUE NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. WAVES 2 TO 3 FT. SCATTERED
SHOWERS IN THE EVENING, THEN NUMEROUS SHOWERS AFTER MIDNIGHT.
PATCHY FOG AFTER MIDNIGHT.
WED AND WED NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
WAVES 2 TO 4 FT. WIDESPREAD SHOWERS. PATCHY FOG. VSBY 1 TO 3 NM.
THU
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. WAVES 2 TO
3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
THU NIGHT
N WINDS 10 TO 15 KT. WAVES 2 TO 3 FT. A CHANCE OF
SHOWERS AND TSTMS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING W. WAVES
AROUND 2 FT.
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.
ANZ280-271800-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS.
MON
N WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS.
MON NIGHT
SE WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND S 1 FOOT AT
2 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: E 3 FT
AT 8 SECONDS AND SE 2 FT AT 3 SECONDS. WITH PATCHY FOG. VSBY
1 NM OR LESS.
TUE NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND S 2 FT AT
3 SECONDS.
WED AND WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND S 3 FT AT
8 SECONDS. SCATTERED SHOWERS IN THE MORNING, THEN SHOWERS LIKELY.
PATCHY FOG THROUGH THE NIGHT. VSBY 1 TO 3 NM.
THU
NE WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
7 FT. SHOWERS LIKELY.
THU NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
6 TO 7 FT. A CHANCE OF SHOWERS.
FRI
N WINDS 5 TO 10 KT. SEAS 5 TO 7 FT.
FRI NIGHT
W WINDS 5 TO 10 KT. SEAS 3 TO 5 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.
ANZ281-271800-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
NE WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS.
MON
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
MON NIGHT
E WINDS AROUND 5 KT, BECOMING SW AFTER MIDNIGHT.
SEAS 3 TO 4 FT. WAVE DETAIL: E 3 FT AT 7 SECONDS AND SE 3 FT AT
8 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: E 3 FT
AT 7 SECONDS AND E 2 FT AT 10 SECONDS. PATCHY FOG. VSBY 1 NM OR
LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
TUE NIGHT
SE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND S
2 FT AT 4 SECONDS. SHOWERS LIKELY WITH A CHANCE OF TSTMS. PATCHY
FOG IN THE EVENING WITH VSBY 1 NM OR LESS.
WED
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND SE 3 FT AT 9 SECONDS.
PATCHY FOG. SCATTERED SHOWERS IN THE MORNING, THEN SHOWERS LIKELY
IN THE AFTERNOON WITH VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. SHOWERS LIKELY IN THE EVENING. A CHANCE OF SHOWERS
AFTER MIDNIGHT. PATCHY FOG IN THE EVENING WITH VSBY 1 TO 3 NM.
THU
NE WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
7 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
6 TO 8 FT. A CHANCE OF SHOWERS.
FRI
NW WINDS 10 TO 15 KT. SEAS 5 TO 8 FT.
FRI NIGHT
W WINDS 5 TO 10 KT. SEAS 4 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.
ANZ282-271800-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
N WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: SE 3 FT AT 7 SECONDS AND N 1 FOOT AT 4 SECONDS.
MON
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON NIGHT
NE WINDS AROUND 5 KT, BECOMING SW AROUND 5 KT AFTER
MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND
SW 1 FOOT AT 3 SECONDS.
TUE
SE WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: E 3 FT
AT 7 SECONDS AND E 2 FT AT 10 SECONDS. WITH PATCHY FOG. VSBY
1 TO 3 NM.
TUE NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 6 SECONDS AND E 1 FOOT AT
10 SECONDS. PATCHY FOG IN THE EVENING. SCATTERED SHOWERS AFTER
MIDNIGHT. VSBY 1 NM OR LESS IN THE EVENING.
WED
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT. WAVE DETAIL: E 4 FT AT 5 SECONDS AND SE 4 FT AT 9 SECONDS.
PATCHY FOG. WIDESPREAD SHOWERS. VSBY 1 TO 3 NM IN THE AFTERNOON.
WED NIGHT
E WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS. PATCHY FOG
IN THE EVENING WITH VSBY 1 TO 3 NM.
THU
N WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS 5 TO
7 FT. A CHANCE OF SHOWERS.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
5 TO 7 FT.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT. SEAS 4 TO 6 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.
ANZ283-271800-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
104 AM EDT MON JUL 27 2026
REST OF TONIGHT
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: E 3 FT AT 7 SECONDS AND N 1 FOOT AT 4 SECONDS.
MON
N WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: E 3 FT
AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL:
SE 3 FT AT 7 SECONDS AND NW 1 FOOT AT 3 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND S 2 FT AT 4 SECONDS.
TUE NIGHT
SE WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL:
SE 3 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS. SCATTERED SHOWERS.
PATCHY FOG AFTER MIDNIGHT.
WED
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: E 4 FT AT 6 SECONDS AND SE 4 FT AT 9 SECONDS.
PATCHY FOG. WIDESPREAD SHOWERS. VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
5 TO 6 FT. A CHANCE OF SHOWERS. PATCHY FOG IN THE EVENING WITH
VSBY 1 TO 3 NM.
THU
N WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
8 FT. A CHANCE OF SHOWERS.
THU NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
5 TO 7 FT.
FRI AND FRI NIGHT
NW WINDS AROUND 10 KT, BECOMING W. SEAS 3 TO
5 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.
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