019
FZUS51 KBOX 180507
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
107 AM EDT WED MAR 18 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 25 NM
ANZ200-181800-
107 AM EDT WED MAR 18 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRES BUILDS OVER THE WATERS WED INTO THU, MOVING OFFSHORE FRI
AS A COLD FRONT APPROACHES FROM THE WEST. LOW PRESSURE PASSES THE
REGION THIS WEEKEND.
ANZ250-181800-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
107 AM EDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF TONIGHT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 6 TO 9 FT. WAVE DETAIL: SE 7 FT AT 11 SECONDS AND NW 6 FT AT
5 SECONDS.
WED
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 5 TO 7 FT. WAVE DETAIL: SE 6 FT
AT 11 SECONDS AND NW 5 FT AT 5 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SE
5 FT AT 10 SECONDS AND NW 2 FT AT 4 SECONDS.
THU
S WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND
S 2 FT AT 3 SECONDS.
THU NIGHT AND FRI
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SE 3 FT AT 9 SECONDS AND S 2 FT AT 3 SECONDS.
FRI NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND
SW 2 FT AT 3 SECONDS.
SAT THROUGH SUN
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. A CHANCE OF RAIN.
SUN NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. A CHANCE OF RAIN AND SNOW.
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.
ANZ251-181800-
MASSACHUSETTS BAY AND IPSWICH BAY-
107 AM EDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: NW 4 FT AT 4 SECONDS AND E 4 FT AT
12 SECONDS.
WED
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING NW
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: NW 4 FT
AT 4 SECONDS AND E 4 FT AT 12 SECONDS.
WED NIGHT
S WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS AND W
2 FT AT 4 SECONDS.
THU
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 10 SECONDS AND
SE 2 FT AT 3 SECONDS.
THU NIGHT AND FRI
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: E 3 FT AT 9 SECONDS AND SE 2 FT AT 4 SECONDS.
FRI NIGHT
SW WINDS AROUND 10 KT, BECOMING W AFTER MIDNIGHT.
SEAS 2 TO 4 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND E 2 FT AT
8 SECONDS.
SAT THROUGH SUN
SW WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. A CHANCE
OF RAIN.
SUN NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
AROUND 3 FT. A CHANCE OF RAIN AND SNOW.
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.
ANZ231-181800-
CAPE COD BAY-
107 AM EDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 11 SECONDS AND NW 3 FT AT
5 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: NW 3 FT
AT 5 SECONDS AND SE 3 FT AT 11 SECONDS.
WED NIGHT
S WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NW
2 FT AT 5 SECONDS AND E 2 FT AT 8 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 7 SECONDS AND NW 1 FOOT AT 4 SECONDS.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 2 FT AT 9 SECONDS AND S 1 FOOT AT
2 SECONDS.
SAT THROUGH SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 3 SECONDS AND E 2 FT AT
9 SECONDS. A CHANCE OF RAIN.
SUN NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT. A CHANCE OF RAIN AND SNOW.
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.
ANZ254-181800-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
107 AM EDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 7 TO 10 FT. WAVE DETAIL: SE 9 FT AT 11 SECONDS AND NW 5 FT
AT 5 SECONDS.
WED
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 5 TO 8 FT. WAVE DETAIL: SE
7 FT AT 11 SECONDS AND NW 4 FT AT 6 SECONDS.
WED NIGHT
SE WINDS AROUND 5 KT. SEAS 4 TO 6 FT. WAVE DETAIL:
SE 5 FT AT 10 SECONDS AND N 2 FT AT 6 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 5 FT
AT 10 SECONDS AND NW 1 FOOT AT 5 SECONDS.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO
5 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND NW 1 FOOT AT
3 SECONDS.
SAT THROUGH SUN
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: S 5 FT AT 5 SECONDS AND E 4 FT AT
9 SECONDS. A CHANCE OF RAIN.
SUN NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. A CHANCE OF RAIN AND SNOW.
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.
ANZ255-181800-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
107 AM EDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 7 TO 10 FT. WAVE DETAIL: S 10 FT AT 11 SECONDS AND NW 2 FT
AT 5 SECONDS.
WED
NW WINDS 15 TO 20 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 5 TO 8 FT, SUBSIDING TO 4 TO 6 FT IN THE
AFTERNOON. WAVE DETAIL: S 8 FT AT 10 SECONDS AND NW 1 FOOT AT
5 SECONDS, BECOMING S 6 FT AT 10 SECONDS AND NW 1 FOOT AT
4 SECONDS.
WED NIGHT
SE WINDS AROUND 5 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S
5 FT AT 10 SECONDS.
THU
E WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT
9 SECONDS.
THU NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
4 FT AT 9 SECONDS.
FRI AND FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SE 3 FT AT 9 SECONDS AND SW 2 FT AT 3 SECONDS.
SAT THROUGH SUN
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. A CHANCE OF RAIN.
SUN NIGHT
SW WINDS 20 TO 25 KT. SEAS 4 TO 6 FT. A CHANCE OF
RAIN AND SNOW.
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.
ANZ256-181800-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
107 AM EDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING
REST OF TONIGHT
NW WINDS 15 TO 20 KT. SEAS 7 TO 10 FT. WAVE
DETAIL: S 9 FT AT 11 SECONDS AND NW 3 FT AT 5 SECONDS.
WED
NW WINDS 10 TO 15 KT, BECOMING NE 5 TO 10 KT IN THE
AFTERNOON. SEAS 5 TO 8 FT, SUBSIDING TO 5 TO 6 FT IN THE
AFTERNOON. WAVE DETAIL: S 8 FT AT 10 SECONDS AND NW 1 FOOT AT
4 SECONDS, BECOMING S 6 FT AT 10 SECONDS.
WED NIGHT
S WINDS AROUND 5 KT. SEAS 4 TO 5 FT. WAVE DETAIL: S
5 FT AT 10 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: SE 5 FT
AT 9 SECONDS.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND SW 2 FT AT 3 SECONDS.
SAT THROUGH SUN
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SW 5 FT AT 5 SECONDS AND SE 3 FT AT
9 SECONDS. A CHANCE OF RAIN.
SUN NIGHT
SW WINDS 20 TO 25 KT. SEAS 4 TO 5 FT. A CHANCE OF
RAIN AND SNOW.
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.
ANZ232-181800-
NANTUCKET SOUND-
107 AM EDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND SE 3 FT AT
11 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: W 3 FT
AT 4 SECONDS AND SE 2 FT AT 11 SECONDS.
WED NIGHT
S WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 10 SECONDS AND NW 1 FOOT AT 4 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT
AT 9 SECONDS AND NW 1 FOOT AT 3 SECONDS.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 2 FT AT 9 SECONDS AND S 1 FOOT AT
3 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 2 FT AT 9 SECONDS. A
CHANCE OF RAIN.
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.
ANZ233-181800-
VINEYARD SOUND-
107 AM EDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: S 5 FT AT 11 SECONDS AND NW 2 FT AT
5 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING SW
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: S 4 FT
AT 10 SECONDS AND NW 2 FT AT 5 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 9 SECONDS AND SW 1 FOOT AT 4 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT
AT 9 SECONDS AND S 1 FOOT AT 2 SECONDS.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 2 FT AT 9 SECONDS AND S 1 FOOT AT 2 SECONDS.
SAT THROUGH SUN
SW WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 3 FT AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS. A CHANCE
OF RAIN.
SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. A CHANCE OF
RAIN AND SNOW.
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.
ANZ234-181800-
BUZZARDS BAY-
107 AM EDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: S 3 FT AT 11 SECONDS AND NW 2 FT AT
5 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING SW
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT
AT 10 SECONDS AND NW 2 FT AT 5 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 9 SECONDS AND SW 1 FOOT AT 4 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT
AT 9 SECONDS.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND
2 FT. WAVE DETAIL: S 2 FT AT 9 SECONDS AND S 1 FOOT AT 2 SECONDS.
SAT THROUGH SUN
SW WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 3 FT AT 5 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE
OF RAIN.
SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 3 FT. A CHANCE OF
RAIN AND SNOW.
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.
ANZ235-181800-
RHODE ISLAND SOUND-
107 AM EDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
REST OF TONIGHT
NW WINDS 15 TO 20 KT. SEAS 5 TO 8 FT. WAVE
DETAIL: S 8 FT AT 11 SECONDS AND NW 2 FT AT 5 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING SW
5 TO 10 KT IN THE AFTERNOON. SEAS 5 TO 7 FT, SUBSIDING TO 3 TO
5 FT IN THE AFTERNOON. WAVE DETAIL: S 7 FT AT 10 SECONDS AND NW
1 FOOT AT 5 SECONDS, BECOMING S 5 FT AT 10 SECONDS AND NW 1 FOOT
AT 5 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 10 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 9 SECONDS.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND SW 2 FT AT 3 SECONDS.
SAT THROUGH SUN
SW WINDS 15 TO 20 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SW 4 FT AT 5 SECONDS AND SE 3 FT AT 9 SECONDS. A CHANCE
OF RAIN.
SUN NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. A CHANCE OF RAIN AND SNOW.
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.
ANZ237-181800-
BLOCK ISLAND SOUND-
107 AM EDT WED MAR 18 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
REST OF TONIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 5 TO 8 FT. WAVE DETAIL: S 7 FT AT 11 SECONDS AND W 2 FT AT
4 SECONDS.
WED
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
4 TO 6 FT. WAVE DETAIL: S 6 FT AT 11 SECONDS AND W 2 FT AT
4 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
4 FT AT 10 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 9 SECONDS.
THU NIGHT THROUGH FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 4 FT AT 9 SECONDS AND SW 1 FOOT AT
4 SECONDS.
SAT THROUGH SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND SE 3 FT AT
9 SECONDS. A CHANCE OF RAIN.
SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 3 TO 4 FT. A CHANCE OF
RAIN AND SNOW.
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.
ANZ230-181800-
BOSTON HARBOR-
107 AM EDT WED MAR 18 2026
REST OF TONIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
WAVES AROUND 2 FT.
WED
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING NW
5 TO 10 KT IN THE AFTERNOON. WAVES AROUND 2 FT IN THE MORNING,
THEN 1 FOOT OR LESS.
WED NIGHT
S WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. WAVES 1 FOOT OR LESS.
THU
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
THU NIGHT THROUGH FRI NIGHT
W WINDS 10 TO 15 KT. WAVES AROUND
2 FT.
SAT THROUGH SUN
SW WINDS 15 TO 20 KT. WAVES 2 TO 3 FT. A
CHANCE OF RAIN.
SUN NIGHT
W WINDS 15 TO 20 KT. WAVES AROUND 2 FT. A CHANCE OF
RAIN AND SNOW.
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.
ANZ236-181800-
NARRAGANSETT BAY-
107 AM EDT WED MAR 18 2026
REST OF TONIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES 2 TO 3 FT, EXCEPT 4 TO 6 FT AT THE BAY ENTRANCE.
WED
NW WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. WAVES
2 TO 3 FT.
WED NIGHT
S WINDS 5 TO 10 KT, DIMINISHING TO AROUND 5 KT AFTER
MIDNIGHT. WAVES 2 TO 3 FT.
THU
SE WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT IN THE
AFTERNOON. WAVES 2 TO 3 FT.
THU NIGHT THROUGH FRI NIGHT
W WINDS 5 TO 10 KT. WAVES AROUND
2 FT.
SAT THROUGH SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES 2 TO 3 FT. A CHANCE OF RAIN.
SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
2 TO 3 FT. A CHANCE OF RAIN AND SNOW.
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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