399
FZUS51 KBOX 130504
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
103 AM EDT SUN SEP 13 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-131800-
103 AM EDT SUN SEP 13 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRESSURE EXITS EAST OF THE WATERS TONIGHT. A WARM FRONT WILL
THEN CROSS THE WATERS ON SUN. THIS WARM FRONT WILL BE ACCOMPANIED BY
HEAVY SHOWERS AND POSSIBLY A FEW EMBEDDED THUNDERSTORMS. A COLD
FRONT QUICKLY FOLLOWS SUN NIGHT WITH HIGH PRES BUILDING ACROSS THE
WATERS MON INTO TUE. THIS HIGH WILL THEN SHIFT EAST OF THE WATERS
WED INTO THU AS OUR NEXT COLD FRONT APPROACHES FROM THE WEST.
ANZ250-131800-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
SUN
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 1 FOOT AT
10 SECONDS. PATCHY FOG. SHOWERS LIKELY IN THE MORNING. SHOWERS IN
THE AFTERNOON. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS IN THE
AFTERNOON.
SUN NIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 2 FT AT
9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND W 2 FT AT 3 SECONDS.
A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
N WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SE 2 FT AT
8 SECONDS.
TUE AND TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-131800-
MASSACHUSETTS BAY AND IPSWICH BAY-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
SUN
SE WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 1 FOOT
AT 10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS WITH A CHANCE OF TSTMS IN THE AFTERNOON. VSBY 1 TO
3 NM, DECREASING TO 1 NM OR LESS IN THE AFTERNOON.
SUN NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 5 SECONDS AND E 1 FOOT AT 10 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND E 2 FT AT 8 SECONDS. A
CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND E 2 FT AT
7 SECONDS.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS AND E 1 FOOT
AT 9 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ231-131800-
CAPE COD BAY-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SE 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 10 SECONDS.
SUN
SE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT
10 SECONDS. PATCHY FOG. SHOWERS. A CHANCE OF TSTMS IN THE
AFTERNOON. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS IN THE
AFTERNOON.
SUN NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 10 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NW 2 FT AT 4 SECONDS AND E 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT AND TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS AND SE 1 FOOT AT
11 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 5 TO 10 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.
ANZ254-131800-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND NE 1 FOOT AT
3 SECONDS.
SUN
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND S 2 FT AT 4 SECONDS.
PATCHY FOG. SHOWERS. A CHANCE OF TSTMS IN THE AFTERNOON. VSBY
1 TO 3 NM, DECREASING TO 1 NM OR LESS IN THE AFTERNOON.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 6 SECONDS AND SE 2 FT AT 10 SECONDS. PATCHY
FOG. A CHANCE OF SHOWERS IN THE EVENING. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. WAVE DETAIL: NW 3 FT AT 4 SECONDS AND SE 3 FT AT 8 SECONDS.
PATCHY FOG IN THE MORNING. A CHANCE OF SHOWERS IN THE MORNING
WITH VSBY 1 TO 3 NM.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 8 SECONDS AND NW 2 FT AT
4 SECONDS.
TUE NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: E
4 FT AT 7 SECONDS AND NW 1 FOOT AT 5 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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.
ANZ255-131800-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND NE 1 FOOT AT
4 SECONDS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND SE 1 FOOT AT
10 SECONDS. PATCHY FOG. SHOWERS. A CHANCE OF TSTMS IN THE
AFTERNOON. VSBY 1 NM OR LESS.
SUN NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: E 3 FT AT 5 SECONDS AND S 3 FT AT 6 SECONDS. PATCHY FOG.
VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND SE 2 FT AT 6 SECONDS.
PATCHY FOG IN THE MORNING. A CHANCE OF SHOWERS IN THE MORNING
WITH VSBY 1 TO 3 NM.
MON NIGHT THROUGH TUE NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 3 FT AT 5 SECONDS AND W
2 FT AT 4 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
WAVE DETAIL: E 4 FT AT 8 SECONDS AND SW 2 FT AT 4 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.
ANZ256-131800-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
SUN
SE WINDS 10 TO 15 KT, BECOMING SW IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS
AND SE 1 FOOT AT 10 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF
TSTMS. VSBY 1 NM OR LESS.
SUN NIGHT
W WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 7 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AFTER
MIDNIGHT. VSBY 1 NM OR LESS.
MON
NW 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 W 3 FT AT 6 SECONDS. A
CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS.
TUE NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
2 FT AT 5 SECONDS AND NW 1 FOOT AT 3 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ232-131800-
NANTUCKET SOUND-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
SUN
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 1 FOOT AT
10 SECONDS. PATCHY FOG. SHOWERS. A CHANCE OF TSTMS IN THE
AFTERNOON. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS IN THE
AFTERNOON.
SUN NIGHT
W WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: E 1 FOOT AT 4 SECONDS AND S
1 FOOT AT 5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 NM
OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SE 1 FOOT AT
6 SECONDS. SHOWERS LIKELY IN THE MORNING.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 2 FT AT 5 SECONDS AND NW 1 FOOT AT 6 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ233-131800-
VINEYARD SOUND-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
SE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE 1 FOOT
AT 10 SECONDS.
SUN
S WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND SE 1 FOOT AT
10 SECONDS. PATCHY FOG. SHOWERS. A CHANCE OF TSTMS IN THE
AFTERNOON. VSBY 1 NM OR LESS.
SUN NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 2 FT AT 4 SECONDS AND SW 2 FT AT 6 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY 1 NM OR LESS.
MON
NW WINDS AROUND 10 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: W 2 FT AT 5 SECONDS AND SE 1 FOOT AT
3 SECONDS. SHOWERS LIKELY IN THE MORNING.
MON NIGHT AND TUE
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS.
TUE NIGHT
E WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
1 FOOT OR LESS. WAVE DETAIL: E 1 FOOT AT 3 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ234-131800-
BUZZARDS BAY-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT AT 4 SECONDS AND S 1 FOOT
AT 3 SECONDS.
SUN
SE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT
10 SECONDS. PATCHY FOG. SHOWERS. A CHANCE OF TSTMS IN THE
AFTERNOON. VSBY 1 NM OR LESS.
SUN NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
1 FOOT AT 2 SECONDS AND SW 1 FOOT AT 6 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY 1 NM OR LESS, INCREASING
TO 1 TO 3 NM AFTER MIDNIGHT.
MON
NW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND E 2 FT AT 5 SECONDS. A
CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: N 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT
8 SECONDS.
TUE AND TUE NIGHT
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 3 SECONDS AND W
1 FOOT AT 6 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ235-131800-
RHODE ISLAND SOUND-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
SE WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 4 SECONDS AND SE 1 FOOT AT 10 SECONDS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE 1 FOOT AT
10 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS. VSBY 1 NM
OR LESS.
SUN NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 6 SECONDS AND SE 1 FOOT AT 9 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS.
TUE AND TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND W 1 FOOT AT
3 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ237-131800-
BLOCK ISLAND SOUND-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SE 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS.
SUN
SE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT, BECOMING S
IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT
5 SECONDS AND SE 1 FOOT AT 10 SECONDS. PATCHY FOG. SHOWERS WITH A
CHANCE OF TSTMS. VSBY 1 NM OR LESS.
SUN NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 6 SECONDS AND SE 1 FOOT AT 10 SECONDS. PATCHY FOG. A
CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY 1 NM OR LESS, INCREASING
TO 1 TO 3 NM AFTER MIDNIGHT.
MON
NW WINDS AROUND 10 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: W 2 FT AT 5 SECONDS AND SE 2 FT AT 6 SECONDS.
A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SE 2 FT AT
9 SECONDS.
TUE AND TUE NIGHT
S WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND W 1 FOOT AT
5 SECONDS.
WED THROUGH THU NIGHT
SW 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.
ANZ230-131800-
BOSTON HARBOR-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SUN
SE WINDS 5 TO 10 KT. WAVES AROUND 2 FT IN THE MORNING,
THEN 1 FOOT OR LESS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS.
VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS IN THE AFTERNOON.
SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, THEN
AROUND 2 FT AFTER MIDNIGHT. PATCHY FOG. A CHANCE OF SHOWERS AFTER
MIDNIGHT. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM AFTER
MIDNIGHT.
MON
NW WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT. A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. WAVES AROUND 2 FT.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED THROUGH THU NIGHT
SW 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.
ANZ236-131800-
NARRAGANSETT BAY-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SUN
SE WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE MORNING.
WAVES AROUND 2 FT. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS.
VSBY 1 NM OR LESS.
SUN NIGHT
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT. PATCHY FOG. A
CHANCE OF SHOWERS AFTER MIDNIGHT. VSBY 1 TO 3 NM.
MON
NW WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT. A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT
N WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. WAVES
AROUND 2 FT.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED THROUGH THU NIGHT
SW 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.
ANZ280-131800-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND E 1 FOOT AT
3 SECONDS.
SUN
S WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS AROUND
3 FT. WAVE DETAIL: SE 3 FT AT 5 SECONDS AND SE 1 FOOT AT
10 SECONDS. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS WITH
A CHANCE OF TSTMS IN THE AFTERNOON. PATCHY FOG IN THE AFTERNOON
WITH VSBY 1 NM OR LESS.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 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 EVENING. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND SE 3 FT AT 8 SECONDS.
PATCHY FOG IN THE MORNING. A CHANCE OF SHOWERS IN THE MORNING
WITH VSBY 1 TO 3 NM.
MON NIGHT AND TUE
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT AT 6 SECONDS AND SE 2 FT AT
8 SECONDS.
TUE NIGHT
SE WINDS 5 TO 10 KT, BECOMING S AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SE 1 FOOT AT
10 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 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.
ANZ281-131800-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND SE 2 FT AT
10 SECONDS.
SUN
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND NE 3 FT AT 4 SECONDS.
PATCHY FOG. A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS WITH
A CHANCE OF TSTMS IN THE AFTERNOON. VSBY 1 TO 3 NM, DECREASING TO
1 NM OR LESS IN THE AFTERNOON.
SUN NIGHT
SW WINDS 10 TO 15 KT, BECOMING W AFTER MIDNIGHT.
GUSTS UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT
7 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS AND TSTMS IN THE
EVENING. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: W 3 FT AT 6 SECONDS AND SE 3 FT AT 8 SECONDS.
A CHANCE OF SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR
LESS.
MON NIGHT THROUGH TUE NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP
TO 30 KT. SEAS 3 TO 5 FT. WAVE DETAIL: E 5 FT AT 7 SECONDS AND NW
3 FT AT 5 SECONDS.
WED THROUGH THU
S WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: E 5 FT AT 8 SECONDS AND NW 1 FOOT AT 5 SECONDS.
THU NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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.
ANZ282-131800-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
SE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND SE 2 FT AT
10 SECONDS.
SUN
SE WINDS 10 TO 15 KT, BECOMING S IN THE AFTERNOON. GUSTS
UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND
SE 2 FT AT 10 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE
MORNING, THEN SHOWERS WITH A CHANCE OF TSTMS IN THE AFTERNOON.
VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS IN THE AFTERNOON.
SUN NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE
EVENING. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT 6 SECONDS AND E
3 FT AT 5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE
EVENING. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT, BECOMING N IN THE AFTERNOON. GUSTS
UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: NW 3 FT AT 5 SECONDS
AND SE 2 FT AT 8 SECONDS. A CHANCE OF SHOWERS. PATCHY FOG IN THE
MORNING WITH VSBY 1 NM OR LESS.
MON NIGHT THROUGH TUE NIGHT
NE WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: NE 5 FT AT 6 SECONDS AND W
2 FT AT 5 SECONDS.
WED THROUGH THU
S WINDS AROUND 5 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: E 5 FT AT 8 SECONDS AND NW 1 FOOT AT 9 SECONDS.
THU NIGHT
SW WINDS 5 TO 10 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.
ANZ283-131800-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
103 AM EDT SUN SEP 13 2026
REST OF TONIGHT
S 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 1 FOOT
AT 10 SECONDS.
SUN
S WINDS 10 TO 15 KT, BECOMING SW IN THE AFTERNOON. GUSTS
UP TO 30 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS AND
E 2 FT AT 4 SECONDS. PATCHY FOG. SHOWERS WITH A CHANCE OF TSTMS.
VSBY 1 NM OR LESS.
SUN NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE
EVENING. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 6 SECONDS AND SE
2 FT AT 9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
MON
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
A CHANCE OF SHOWERS IN THE MORNING.
MON NIGHT THROUGH TUE NIGHT
E WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT AT 5 SECONDS AND SE
2 FT AT 9 SECONDS.
WED THROUGH THU NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
WAVE DETAIL: E 4 FT AT 8 SECONDS AND SW 2 FT AT 3 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.
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