363
FZUS51 KBOX 132005
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
405 PM EDT WED MAY 13 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-140900-
405 PM EDT WED MAY 13 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRES MOVES OFFSHORE EARLY WED AND IS REPLACED BY LOW PRES
TRACKING INTO THE ST LAWRENCE RIVER VALLEY LATE WED. THIS LOW GIVES
WAY TO A NEW AREA OF LOW PRES DEVELOPING SOUTH OF NEW ENGLAND LATER
THU, THEN OFFSHORE FRI. THEN THE BERMUDA HIGH DEVELOPS OVER THE
WEEKEND INTO EARLY NEXT WEEK, PROVIDING TRANQUIL BOATING WEATHER
ACROSS THE MA AND RI WATERS.
ANZ250-140900-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 15 TO 20 KT. GUSTS UP TO 30 KT, DECREASING TO
20 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT
6 SECONDS AND E 1 FOOT AT 11 SECONDS.
THU
SE WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS AROUND
3 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND E 1 FOOT AT
11 SECONDS. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS IN
THE AFTERNOON. PATCHY FOG IN THE AFTERNOON WITH VSBY 1 TO 3 NM.
THU NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: E 4 FT AT 10 SECONDS AND S 1 FOOT AT
4 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS, INCREASING TO
1 TO 3 NM AFTER MIDNIGHT.
FRI
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT 9 SECONDS AND E 4 FT AT
11 SECONDS. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND E 4 FT AT
10 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
SAT AND SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: E 4 FT AT 10 SECONDS AND SW 3 FT AT
3 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 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.
ANZ251-140900-
MASSACHUSETTS BAY AND IPSWICH BAY-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 5 SECONDS AND E 1 FOOT AT 11 SECONDS.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND E 1 FOOT AT
11 SECONDS. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS IN
THE AFTERNOON. PATCHY FOG IN THE AFTERNOON WITH VSBY 1 TO 3 NM.
THU NIGHT
E 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 E 3 FT AT
11 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
FRI
NE WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT
AT 7 SECONDS AND E 3 FT AT 10 SECONDS. SHOWERS. PATCHY FOG IN THE
MORNING WITH VSBY 1 TO 3 NM.
FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 3 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS AND N 2 FT AT
3 SECONDS.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND E 3 FT AT
7 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 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.
ANZ231-140900-
CAPE COD BAY-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 2 FT AT
7 SECONDS.
THU
E WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: E 3 FT AT 6 SECONDS AND SE 2 FT AT 3 SECONDS.
PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM IN THE AFTERNOON.
THU NIGHT
E WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS AND
E 1 FOOT AT 11 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
FRI
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 10 SECONDS AND S 2 FT AT 10 SECONDS. SHOWERS LIKELY. PATCHY
FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 10 SECONDS AND E 2 FT AT
12 SECONDS.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND NE 2 FT AT
10 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.
ANZ254-140900-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 15 TO 20 KT, BECOMING SE 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 6 SECONDS AND NE 1 FOOT AT 4 SECONDS.
THU
E WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND E 1 FOOT AT
11 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS IN THE
AFTERNOON.
THU NIGHT
E WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. GUSTS UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 9 SECONDS AND E 2 FT AT 5 SECONDS. PATCHY FOG. SHOWERS, MAINLY
IN THE EVENING. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM AFTER
MIDNIGHT.
FRI
E WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 10 SECONDS AND S 5 FT AT
10 SECONDS. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS
LIKELY IN THE AFTERNOON. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
4 TO 5 FT. WAVE DETAIL: E 5 FT AT 5 SECONDS AND E 5 FT AT
10 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
SAT AND SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT AT 5 SECONDS AND E 5 FT AT
9 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ255-140900-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 7 SECONDS AND SE 1 FOOT AT
12 SECONDS.
THU
SE WINDS 15 TO 20 KT, BECOMING E 10 TO 15 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 5 SECONDS AND
SW 3 FT AT 6 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM IN THE
AFTERNOON.
THU NIGHT
E WINDS 10 TO 15 KT, BECOMING SE 5 TO 10 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 5 FT AT 9 SECONDS AND
SW 4 FT AT 7 SECONDS. PATCHY FOG. SHOWERS LIKELY, MAINLY IN THE
EVENING. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM AFTER
MIDNIGHT.
FRI
E WINDS 5 TO 10 KT, BECOMING N IN THE AFTERNOON. SEAS 3 TO
5 FT. WAVE DETAIL: S 5 FT AT 9 SECONDS AND SE 5 FT AT 10 SECONDS.
A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
3 TO 5 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND S 5 FT AT
10 SECONDS.
SAT AND SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND E 4 FT AT
9 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ256-140900-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: S 5 FT AT 7 SECONDS AND SE 1 FOOT AT
11 SECONDS. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
THU
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND SW 3 FT AT 6 SECONDS.
PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL:
SE 4 FT AT 9 SECONDS AND NE 3 FT AT 10 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS
AFTER MIDNIGHT.
FRI
N WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: S 5 FT AT
9 SECONDS AND E 5 FT AT 10 SECONDS. A CHANCE OF SHOWERS. PATCHY
FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
3 TO 5 FT. WAVE DETAIL: S 5 FT AT 9 SECONDS AND SE 5 FT AT
10 SECONDS.
SAT AND SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT AT 4 SECONDS AND E 4 FT AT
10 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ232-140900-
NANTUCKET SOUND-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND E 2 FT AT
7 SECONDS.
THU
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND SE 1 FOOT AT
11 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM IN THE AFTERNOON.
THU NIGHT
E 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: E 2 FT AT 4 SECONDS AND S 2 FT AT 7 SECONDS. PATCHY FOG.
SHOWERS LIKELY. VSBY 1 TO 3 NM.
FRI
E WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: E 2 FT AT 5 SECONDS AND E 2 FT AT
10 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH
VSBY 1 TO 3 NM.
FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 5 SECONDS AND E 2 FT AT
10 SECONDS.
SAT AND SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 2 FT AT
5 SECONDS.
SUN THROUGH MON NIGHT
S 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.
ANZ233-140900-
VINEYARD SOUND-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND S 3 FT AT
10 SECONDS.
THU
SE WINDS 15 TO 20 KT, BECOMING E 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND
SE 1 FOOT AT 11 SECONDS. PATCHY FOG. SHOWERS. A CHANCE OF TSTMS
IN THE AFTERNOON WITH VSBY 1 TO 3 NM.
THU NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 6 SECONDS AND S 2 FT AT 9 SECONDS. PATCHY FOG. SHOWERS
LIKELY IN THE EVENING. A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY
1 TO 3 NM.
FRI
NE WINDS 5 TO 10 KT, BECOMING N IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 10 SECONDS AND SE 3 FT AT
10 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH
VSBY 1 TO 3 NM.
FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: E 2 FT AT 10 SECONDS AND S 2 FT AT
10 SECONDS.
SAT AND SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND S 2 FT AT
9 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 KT. 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.
ANZ234-140900-
BUZZARDS BAY-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND SE 3 FT AT 11 SECONDS.
THU
E 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 SE 1 FOOT AT
11 SECONDS. PATCHY FOG. SHOWERS. A CHANCE OF TSTMS IN THE
AFTERNOON WITH VSBY 1 TO 3 NM.
THU NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 7 SECONDS AND E 1 FOOT AT 3 SECONDS. PATCHY FOG. SHOWERS
LIKELY IN THE EVENING. A CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY
1 TO 3 NM.
FRI
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 11 SECONDS AND NE 1 FOOT AT 2 SECONDS. SHOWERS LIKELY,
MAINLY IN THE MORNING. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 11 SECONDS AND NE 1 FOOT AT
3 SECONDS.
SAT AND SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 2 FT AT
10 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ235-140900-
RHODE ISLAND SOUND-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 4 FT AT 6 SECONDS AND SE 4 FT AT 7 SECONDS.
THU
SE WINDS 15 TO 20 KT, BECOMING E 10 TO 15 KT IN THE
AFTERNOON. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND
SE 1 FOOT AT 10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE
MORNING. SHOWERS IN THE AFTERNOON. VSBY 1 TO 3 NM.
THU NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL:
SE 3 FT AT 9 SECONDS AND SW 2 FT AT 8 SECONDS. PATCHY FOG.
SHOWERS LIKELY IN THE EVENING WITH VSBY 1 TO 3 NM.
FRI
NE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 9 SECONDS AND E 4 FT AT 10 SECONDS. A CHANCE OF SHOWERS.
PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND S 4 FT AT
10 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
SAT AND SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 4 FT AT 4 SECONDS AND SE 4 FT AT
10 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 KT. SEAS 2 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.
ANZ237-140900-
BLOCK ISLAND SOUND-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 4 FT AT 7 SECONDS AND SE 1 FOOT AT
11 SECONDS. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 6 SECONDS AND SE 1 FOOT AT 11 SECONDS. PATCHY FOG. SHOWERS
LIKELY. VSBY 1 TO 3 NM.
THU NIGHT
SE WINDS AROUND 5 KT, BECOMING NE AROUND 5 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND
E 1 FOOT AT 5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 TO
3 NM.
FRI
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 10 SECONDS AND NE 2 FT AT 5 SECONDS. A CHANCE OF SHOWERS.
PATCHY FOG IN THE MORNING.
FRI NIGHT
N WINDS AROUND 5 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND E 2 FT AT
5 SECONDS.
SAT AND SAT NIGHT
SW 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 3 FT AT
9 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.
ANZ230-140900-
BOSTON HARBOR-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. WAVES AROUND 2 FT.
THU
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES 2 TO
3 FT. PATCHY FOG. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS WITH A CHANCE OF TSTMS IN THE AFTERNOON WITH VSBY 1 TO
3 NM.
THU NIGHT
E WINDS 10 TO 15 KT. WAVES AROUND 2 FT. PATCHY FOG.
SHOWERS WITH A CHANCE OF TSTMS IN THE EVENING. A CHANCE OF
SHOWERS AFTER MIDNIGHT. VSBY 1 TO 3 NM.
FRI
NE WINDS 10 TO 15 KT. WAVES AROUND 2 FT. SHOWERS. PATCHY
FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. WAVES AROUND 2 FT.
SUN THROUGH MON NIGHT
S WINDS 5 TO 10 KT. 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.
ANZ236-140900-
NARRAGANSETT BAY-
405 PM EDT WED MAY 13 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING
TONIGHT
S WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. WAVES 2 TO 4 FT. A SLIGHT CHANCE OF
SHOWERS AFTER MIDNIGHT.
THU
SE WINDS 10 TO 15 KT, BECOMING E 5 TO 10 KT IN THE
AFTERNOON. GUSTS UP TO 20 KT. WAVES 2 TO 3 FT. PATCHY FOG. A
CHANCE OF SHOWERS IN THE MORNING. SHOWERS IN THE AFTERNOON. VSBY
1 TO 3 NM.
THU NIGHT
NE WINDS 5 TO 10 KT. WAVES 2 TO 3 FT. PATCHY FOG.
SHOWERS LIKELY, MAINLY IN THE EVENING WITH VSBY 1 TO 3 NM.
FRI
NE WINDS 5 TO 10 KT. WAVES 2 TO 3 FT. SHOWERS LIKELY.
PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
FRI NIGHT
N WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. WAVES
2 TO 3 FT.
SAT AND SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES 2 TO 3 FT.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 KT. WAVES 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.
ANZ280-140900-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
405 PM EDT WED MAY 13 2026
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND SE 1 FOOT AT
11 SECONDS.
THU
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND SW 2 FT AT 5 SECONDS.
A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS LIKELY IN THE
AFTERNOON. PATCHY FOG IN THE AFTERNOON WITH VSBY 1 TO 3 NM.
THU NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 4 FT. WAVE DETAIL: E 4 FT AT 10 SECONDS AND S 1 FOOT AT
4 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS, INCREASING TO
1 TO 3 NM AFTER MIDNIGHT.
FRI
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: S 5 FT AT 10 SECONDS AND SE 5 FT AT
11 SECONDS. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
FRI NIGHT
N WINDS AROUND 10 KT, BECOMING W WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS 4 TO 5 FT. WAVE DETAIL: E 5 FT AT
10 SECONDS AND SE 4 FT AT 10 SECONDS. A CHANCE OF SHOWERS IN THE
EVENING.
SAT AND SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 4 TO 5 FT. WAVE DETAIL: S 5 FT AT 5 SECONDS AND E 5 FT AT
10 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO
25 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.
ANZ281-140900-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
405 PM EDT WED MAY 13 2026
TONIGHT
S WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 3 FT AT 5 SECONDS AND E 3 FT AT 6 SECONDS.
THU
E WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT. WAVE DETAIL: SE 5 FT AT 7 SECONDS AND E 5 FT AT 11 SECONDS.
PATCHY FOG. SHOWERS LIKELY. VSBY 1 NM OR LESS IN THE AFTERNOON.
THU NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 5 FT. WAVE DETAIL: SE 5 FT AT 10 SECONDS AND E 3 FT AT
6 SECONDS. PATCHY FOG. SHOWERS LIKELY. VSBY 1 NM OR LESS.
FRI
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NE
5 TO 10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: SE 6 FT
AT 10 SECONDS AND S 6 FT AT 11 SECONDS. A CHANCE OF SHOWERS.
PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
FRI NIGHT
NW WINDS AROUND 10 KT. SEAS 5 TO 6 FT. WAVE DETAIL:
E 6 FT AT 5 SECONDS AND E 6 FT AT 10 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING.
SAT AND SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT AT 5 SECONDS AND E 5 FT AT
9 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 4 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.
ANZ282-140900-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
405 PM EDT WED MAY 13 2026
TONIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND NE 1 FOOT AT
5 SECONDS. A SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
THU
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: S 5 FT AT 7 SECONDS AND E 1 FOOT AT 7 SECONDS.
PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS
IN THE AFTERNOON.
THU NIGHT
SE WINDS AROUND 10 KT, BECOMING S AFTER MIDNIGHT.
SEAS 4 TO 5 FT. WAVE DETAIL: SE 5 FT AT 10 SECONDS AND NE 1 FOOT
AT 5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 NM OR LESS.
FRI
W WINDS 5 TO 10 KT. SEAS 5 TO 6 FT. WAVE DETAIL: SE 6 FT
AT 10 SECONDS AND S 5 FT AT 9 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
FRI NIGHT
NW WINDS 5 TO 10 KT. SEAS 5 TO 6 FT. WAVE DETAIL: E
6 FT AT 10 SECONDS AND S 5 FT AT 10 SECONDS.
SAT AND SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 5 TO 6 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND E 4 FT AT
9 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 4 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.
ANZ283-140900-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
405 PM EDT WED MAY 13 2026
TONIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND E 3 FT AT 6 SECONDS. A
SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT.
THU
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 4 TO
5 FT. WAVE DETAIL: SE 5 FT AT 7 SECONDS AND SW 2 FT AT 6 SECONDS.
PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS
IN THE AFTERNOON.
THU NIGHT
SW WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: SE
5 FT AT 9 SECONDS AND E 5 FT AT 10 SECONDS. PATCHY FOG. A CHANCE
OF SHOWERS. VSBY 1 NM OR LESS.
FRI
W WINDS 5 TO 10 KT. SEAS AROUND 5 FT. WAVE DETAIL: SE 5 FT
AT 10 SECONDS AND S 5 FT AT 10 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
FRI NIGHT
NW WINDS 5 TO 10 KT. SEAS 5 TO 6 FT. WAVE DETAIL: E
5 FT AT 10 SECONDS AND S 4 FT AT 10 SECONDS.
SAT AND SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 5 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND E 4 FT AT
9 SECONDS.
SUN THROUGH MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 4 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.
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