222
FZUS51 KBOX 172304
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
703 PM EDT SUN MAY 17 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-181200-
703 PM EDT SUN MAY 17 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
A COLD FRONT WILL DROP S ACROSS NORTHERN NEW ENG TODAY PUSHING
THROUGH SOUTHERN NEW ENG AND THE WATERS TONIGHT. HIGH PRES WILL
BUILD OVER THE EASTERN WATERS MON, THEN A WARM FRONT WILL LIFT TO
THE N BY TUE. A STRONG COLD FRONT WILL CROSS THE WATERS LATE WED AND
WED EVENING FOLLOWED BY HIGH PRES BUILDING IN FROM THE NW THU INTO
FRI.
ANZ250-181200-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
703 PM EDT SUN MAY 17 2026
TONIGHT
W WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 8 SECONDS AND W 1 FOOT AT
3 SECONDS.
MON
E WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS.
TUE
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, INCREASING TO
15 TO 20 KT WITH GUSTS UP TO 30 KT IN THE AFTERNOON. SEAS 2 TO
4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 3 FT AT 8 SECONDS.
TUE NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND SE 3 FT AT
8 SECONDS.
WED AND WED NIGHT
NW WINDS AROUND 15 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE
3 FT AT 8 SECONDS. A CHANCE OF SHOWERS THROUGH THE NIGHT.
THU THROUGH FRI
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
FRI NIGHT
SE 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.
ANZ251-181200-
MASSACHUSETTS BAY AND IPSWICH BAY-
703 PM EDT SUN MAY 17 2026
TONIGHT
NW WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 8 SECONDS AND W 1 FOOT AT
3 SECONDS.
MON
E WINDS AROUND 5 KT, BECOMING SE 10 TO 15 KT WITH GUSTS UP
TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT
AT 3 SECONDS AND E 2 FT AT 5 SECONDS.
MON NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS.
TUE
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND SE 2 FT AT 6 SECONDS.
TUE NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND SE 2 FT AT
6 SECONDS.
WED AND WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND SE 2 FT AT
8 SECONDS. A CHANCE OF SHOWERS THROUGH THE NIGHT.
THU THROUGH FRI
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT.
FRI NIGHT
SE 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.
ANZ231-181200-
CAPE COD BAY-
703 PM EDT SUN MAY 17 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NE 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT THIS EVENING, THEN
1 FOOT OR LESS. WAVE DETAIL: W 1 FOOT AT 3 SECONDS AND SE 1 FOOT
AT 9 SECONDS, BECOMING NW 1 FOOT AT 3 SECONDS AND E 1 FOOT AT
8 SECONDS.
MON
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS, THEN AROUND 2 FT
IN THE AFTERNOON. WAVE DETAIL: NE 1 FOOT AT 2 SECONDS AND NW
1 FOOT AT 3 SECONDS, BECOMING E 1 FOOT AT 2 SECONDS AND NW 1 FOOT
AT 3 SECONDS.
MON NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SE 1 FOOT AT 3 SECONDS
AND E 1 FOOT AT 14 SECONDS.
TUE
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW
2 FT AT 3 SECONDS AND E 1 FOOT AT 4 SECONDS.
TUE NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 2 FT AT
10 SECONDS.
WED AND WED NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND SE 2 FT AT
9 SECONDS. A CHANCE OF SHOWERS THROUGH THE NIGHT.
THU THROUGH FRI
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. A CHANCE
OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-181200-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
703 PM EDT SUN MAY 17 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: W 3 FT AT
4 SECONDS AND S 3 FT AT 8 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH
VSBY 1 TO 3 NM.
MON
E WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 7 SECONDS AND W 2 FT AT
4 SECONDS.
MON NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE
3 FT AT 7 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT
SW WINDS AROUND 20 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 5 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 2 FT AT
9 SECONDS.
WED
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
SW WINDS 15 TO 20 KT, BECOMING NW 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
THU THROUGH FRI
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT.
FRI NIGHT
SE 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.
ANZ255-181200-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
703 PM EDT SUN MAY 17 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
N 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SW 4 FT
AT 7 SECONDS AND SE 3 FT AT 8 SECONDS. PATCHY FOG AFTER MIDNIGHT
WITH VSBY 1 TO 3 NM.
MON
E WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT
AT 7 SECONDS AND SE 3 FT AT 8 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS.
PATCHY FOG. VSBY 1 NM OR LESS.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT AND WED
SW WINDS 20 TO 25 KT. SEAS 4 TO 6 FT. WAVE
DETAIL: SW 6 FT AT 7 SECONDS AND E 2 FT AT 9 SECONDS.
WED NIGHT
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, SUBSIDING
TO 3 TO 5 FT AFTER MIDNIGHT. WAVE DETAIL: SW 7 FT AT 7 SECONDS
AND E 2 FT AT 10 SECONDS, BECOMING SW 5 FT AT 7 SECONDS AND SE
2 FT AT 9 SECONDS. A CHANCE OF SHOWERS.
THU AND THU NIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
BECOMING E 5 TO 10 KT. SEAS 2 TO 4 FT.
FRI
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
FRI NIGHT
SE 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.
ANZ256-181200-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
703 PM EDT SUN MAY 17 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 4 TO 5 FT. WAVE DETAIL: SW
4 FT AT 7 SECONDS AND SE 4 FT AT 8 SECONDS. PATCHY FOG AFTER
MIDNIGHT.
MON
E WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 7 SECONDS AND SE 3 FT AT 8 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM
IN THE AFTERNOON.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS.
PATCHY FOG. VSBY 1 NM OR LESS.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT AND WED
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 5 TO 6 FT. WAVE DETAIL: SW 6 FT AT 7 SECONDS AND SE 4 FT AT
9 SECONDS.
WED NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING
NW 10 TO 15 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: SW
6 FT AT 7 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS.
THU THROUGH FRI
E WINDS 10 TO 15 KT. SEAS 2 TO 4 FT.
FRI NIGHT
SE 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.
ANZ232-181200-
NANTUCKET SOUND-
703 PM EDT SUN MAY 17 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT
4 SECONDS AND SE 1 FOOT AT 8 SECONDS.
MON
E WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E
1 FOOT AT 5 SECONDS AND SW 1 FOOT AT 6 SECONDS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND
SE 1 FOOT AT 5 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM, DECREASING TO
1 NM OR LESS AFTER MIDNIGHT.
TUE
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 1 FOOT AT
8 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT AND WED
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 SE 1 FOOT
AT 9 SECONDS.
WED NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING
NW 10 TO 15 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: SW
3 FT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS. A CHANCE OF
SHOWERS.
THU THROUGH FRI
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
FRI NIGHT
SE 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.
ANZ233-181200-
VINEYARD SOUND-
703 PM EDT SUN MAY 17 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
N 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 7 SECONDS AND SE 2 FT AT 8 SECONDS.
MON
E WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 7 SECONDS AND E 2 FT AT 4 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 6 SECONDS AND SE 1 FOOT AT 6 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
TUE
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 1 FOOT AT
9 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
TUE NIGHT
SW 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 3 FT AT
6 SECONDS.
WED AND WED NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SW 5 FT AT 7 SECONDS AND SE 2 FT AT
5 SECONDS. A CHANCE OF SHOWERS.
THU THROUGH FRI
E WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
FRI NIGHT
SE 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.
ANZ234-181200-
BUZZARDS BAY-
703 PM EDT SUN MAY 17 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
N 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS AND E 1 FOOT AT 15 SECONDS.
MON
E WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 1 FOOT AT 2 SECONDS AND SW 1 FOOT AT
7 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 5 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR
LESS.
TUE
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 1 FOOT AT
10 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
TUE NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS.
WED AND WED NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT 5 SECONDS. A CHANCE OF
SHOWERS THROUGH THE NIGHT.
THU THROUGH FRI
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
FRI NIGHT
SE 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.
ANZ235-181200-
RHODE ISLAND SOUND-
703 PM EDT SUN MAY 17 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
N 5 TO 10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT
AT 7 SECONDS AND S 4 FT AT 8 SECONDS.
MON
E WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 7 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM, DECREASING TO 1 NM
OR LESS AFTER MIDNIGHT.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
TUE NIGHT
SW WINDS AROUND 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: S 5 FT AT 7 SECONDS.
WED
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SW 6 FT AT 7 SECONDS AND SE 5 FT AT 9 SECONDS.
A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING
NW 10 TO 15 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT. A CHANCE OF
SHOWERS.
THU AND THU NIGHT
NE WINDS 10 TO 15 KT, BECOMING SE 5 TO
10 KT. SEAS 2 TO 4 FT.
FRI
E WINDS AROUND 10 KT. SEAS AROUND 2 FT.
FRI NIGHT
SE 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.
ANZ237-181200-
BLOCK ISLAND SOUND-
703 PM EDT SUN MAY 17 2026
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
N 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 6 SECONDS AND SE 3 FT AT 8 SECONDS.
MON
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT
AT 7 SECONDS AND SE 3 FT AT 8 SECONDS.
MON NIGHT
S WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 7 SECONDS.
PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW
4 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS.
TUE NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 3 FT AT
9 SECONDS.
WED AND WED NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SW 5 FT AT 7 SECONDS AND SE 3 FT AT
8 SECONDS. A CHANCE OF SHOWERS.
THU THROUGH FRI
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
FRI NIGHT
SE 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.
ANZ230-181200-
BOSTON HARBOR-
703 PM EDT SUN MAY 17 2026
TONIGHT
NW WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. WAVES
AROUND 2 FT THIS EVENING, THEN 1 FOOT OR LESS.
MON
E WINDS 5 TO 10 KT, INCREASING TO 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.
MON NIGHT
S WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
TUE
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES AROUND 2 FT.
TUE NIGHT
SW WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. WAVES
AROUND 2 FT.
WED AND WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES AROUND 2 FT. SHOWERS LIKELY THROUGH THE NIGHT.
THU THROUGH FRI
E WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
FRI NIGHT
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. A CHANCE
OF SHOWERS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-181200-
NARRAGANSETT BAY-
703 PM EDT SUN MAY 17 2026
TONIGHT
SW WINDS 10 TO 15 KT, BECOMING N 5 TO 10 KT AFTER
MIDNIGHT. WAVES 2 TO 3 FT.
MON
E WINDS 5 TO 10 KT, BECOMING SE 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
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. WAVES 2 TO 3 FT.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
2 TO 3 FT.
WED AND WED NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
WAVES 2 TO 4 FT. A CHANCE OF SHOWERS THROUGH THE NIGHT.
THU THROUGH FRI
E WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
FRI NIGHT
SE 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.
ANZ280-181200-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
703 PM EDT SUN MAY 17 2026
TONIGHT
W WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT, BECOMING
NE AFTER MIDNIGHT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT
8 SECONDS AND W 2 FT AT 4 SECONDS.
MON
E WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 3 FT. WAVE DETAIL: NE 3 FT AT 7 SECONDS AND W 1 FOOT AT
3 SECONDS.
MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 3 FT AT
7 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
TUE
SW WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT, INCREASING
TO 20 TO 25 KT WITH GUSTS UP TO 30 KT IN THE AFTERNOON. SEAS 3 TO
5 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT
SW WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 5 TO 6 FT. WAVE DETAIL: S
6 FT AT 7 SECONDS.
WED AND WED NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: S 6 FT AT 7 SECONDS. A CHANCE OF
SHOWERS THROUGH THE NIGHT.
THU THROUGH FRI 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.
ANZ281-181200-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
703 PM EDT SUN MAY 17 2026
TONIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
AFTER MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: W 4 FT AT 7 SECONDS
AND S 4 FT AT 8 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO
3 NM.
MON
E WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: SW 4 FT AT 7 SECONDS AND NE 3 FT AT
7 SECONDS.
MON NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS. PATCHY FOG. VSBY
1 NM OR LESS.
TUE
SW WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. SEAS 3 TO 4 FT, BUILDING TO 4 TO
6 FT IN THE AFTERNOON. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND SE
2 FT AT 9 SECONDS, BECOMING SW 6 FT AT 6 SECONDS AND SE 2 FT AT
9 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT AND WED
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: SW 7 FT AT 7 SECONDS AND SE 2 FT AT
9 SECONDS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT,
BECOMING NW 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 5 TO 7 FT. WAVE DETAIL: SW 7 FT AT 7 SECONDS AND SE 2 FT AT
9 SECONDS. A CHANCE OF SHOWERS.
THU THROUGH FRI
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT.
FRI NIGHT
SE 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.
ANZ282-181200-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
703 PM EDT SUN MAY 17 2026
TONIGHT
SW WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT AFTER
MIDNIGHT. SEAS 4 TO 5 FT. WAVE DETAIL: SW 5 FT AT 7 SECONDS AND
SE 3 FT AT 8 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO
3 NM.
MON
E WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT
AT 7 SECONDS AND SE 2 FT AT 8 SECONDS. PATCHY FOG. VSBY 1 TO
3 NM, DECREASING TO 1 NM OR LESS IN THE AFTERNOON.
MON NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS.
PATCHY FOG. VSBY 1 NM OR LESS.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT AND WED
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 5 TO 6 FT. WAVE DETAIL: SW 6 FT AT 7 SECONDS AND SE 2 FT AT
9 SECONDS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT,
BECOMING NW 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 6 TO 7 FT, SUBSIDING TO 4 TO 6 FT AFTER MIDNIGHT. WAVE
DETAIL: SW 6 FT AT 7 SECONDS AND SE 2 FT AT 9 SECONDS, BECOMING
SW 5 FT AT 7 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF
SHOWERS.
THU
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
THU NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
FRI AND FRI NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 4 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.
ANZ283-181200-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
703 PM EDT SUN MAY 17 2026
TONIGHT
SW WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT, BECOMING
W 5 TO 10 KT AFTER MIDNIGHT. SEAS 4 TO 5 FT. WAVE DETAIL: SW 5 FT
AT 7 SECONDS AND SE 3 FT AT 8 SECONDS. PATCHY FOG AFTER MIDNIGHT
WITH VSBY 1 TO 3 NM.
MON
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 7 SECONDS AND SE 2 FT AT 8 SECONDS. PATCHY FOG. VSBY 1 NM OR
LESS.
MON NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND
SE 2 FT AT 9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT AND WED
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 5 TO 6 FT. WAVE DETAIL: SW 6 FT AT 6 SECONDS AND SE 2 FT AT
9 SECONDS.
WED NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT,
BECOMING NW 10 TO 15 KT WITH GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 5 TO 7 FT, SUBSIDING TO 4 TO 5 FT AFTER MIDNIGHT. WAVE
DETAIL: SW 6 FT AT 7 SECONDS AND SE 2 FT AT 9 SECONDS, BECOMING
SW 5 FT AT 7 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF
SHOWERS.
THU
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
THU NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
FRI AND FRI NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 4 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.
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