243
FZUS51 KBOX 190505
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
105 AM EDT TUE MAY 19 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-191800-
105 AM EDT TUE MAY 19 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
GUSTY SW WINDS WILL DEVELOP TUE. A STRONG COLD FRONT WILL CROSS THE
WATERS LATE WED AND WED EVENING. STRONG HIGH PRES BUILDS OVER THE GT
LAKES THU AND MOVES INTO THE WATERS FRI. THE HIGH MOVES OFFSHORE BY
SAT AS A FRONTAL BOUNDARY APPROACHES FROM THE S.
ANZ250-191800-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND E 1 FOOT AT
4 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING S
15 TO 20 KT WITH GUSTS UP TO 30 KT IN THE AFTERNOON. SEAS 2 TO
4 FT. WAVE DETAIL: SW 4 FT AT 4 SECONDS AND SE 2 FT AT 9 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
9 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 2 FT AT 9 SECONDS.
A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
W WINDS 10 TO 15 KT, BECOMING NW AFTER MIDNIGHT.
GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT
4 SECONDS AND SE 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS IN THE
EVENING.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND N 3 FT AT
5 SECONDS.
FRI
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
FRI NIGHT THROUGH SAT NIGHT
E 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.
ANZ251-191800-
MASSACHUSETTS BAY AND IPSWICH BAY-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 3 SECONDS AND E 1 FOOT AT 4 SECONDS. PATCHY
FOG. VSBY 1 TO 3 NM.
TUE
SW WINDS 10 TO 15 KT. GUSTS UP TO 25 KT IN THE AFTERNOON.
SEAS 2 TO 3 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
2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND E 1 FOOT AT
9 SECONDS.
WED
SW 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 1 FOOT AT
9 SECONDS. A CHANCE OF SHOWERS IN THE AFTERNOON.
WED NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: NW 2 FT AT 3 SECONDS AND S 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND NE 1 FOOT
AT 4 SECONDS.
FRI
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
FRI NIGHT AND SAT
SW WINDS 5 TO 10 KT, BECOMING E. SEAS AROUND
2 FT, THEN 1 FOOT OR LESS. A CHANCE OF SHOWERS.
SAT NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. SHOWERS
LIKELY.
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.
ANZ231-191800-
CAPE COD BAY-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND NE
1 FOOT AT 3 SECONDS. PATCHY FOG. 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 AROUND 2 FT, BUILDING TO 3 TO
4 FT IN THE AFTERNOON. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND E
1 FOOT AT 4 SECONDS, BECOMING 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
2 TO 4 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT
9 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
WED
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 SE 1 FOOT AT
10 SECONDS. SHOWERS LIKELY IN THE AFTERNOON.
WED NIGHT
W WINDS 10 TO 15 KT, BECOMING NW AFTER MIDNIGHT.
GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT
3 SECONDS AND N 2 FT AT 3 SECONDS. A CHANCE OF SHOWERS IN THE
EVENING.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS AND S 1 FOOT
AT 6 SECONDS.
FRI
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
FRI NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. A CHANCE
OF SHOWERS.
SAT AND SAT NIGHT
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS,
THEN AROUND 2 FT. SHOWERS LIKELY.
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.
ANZ254-191800-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
105 AM EDT TUE MAY 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH WEDNESDAY EVENING...
REST OF TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 2 FT AT
9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE
SW WINDS 15 TO 20 KT. GUSTS UP TO 30 KT IN THE AFTERNOON.
SEAS 3 TO 5 FT. WAVE DETAIL: SW 5 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
4 TO 6 FT. WAVE DETAIL: SW 5 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SW 5 FT AT 7 SECONDS AND W 2 FT AT 4 SECONDS.
PATCHY FOG. A CHANCE OF SHOWERS IN THE AFTERNOON. VSBY 1 NM OR
LESS.
WED NIGHT
W WINDS 15 TO 20 KT, BECOMING NW 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S 5 FT
AT 7 SECONDS AND W 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS.
THU
N WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND N 2 FT AT
4 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
THU NIGHT
S WINDS AROUND 5 KT, BECOMING NW AROUND 5 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT.
FRI
E WINDS AROUND 5 KT. SEAS 2 TO 3 FT.
FRI NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS.
SAT AND SAT NIGHT
E WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT. SEAS 2 TO 4 FT. SHOWERS LIKELY.
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.
ANZ255-191800-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
105 AM EDT TUE MAY 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH WEDNESDAY EVENING...
REST OF TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS. PATCHY DENSE 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: W 5 FT AT 5 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 25 KT. SEAS
5 TO 7 FT. WAVE DETAIL: W 7 FT AT 6 SECONDS AND E 1 FOOT AT
10 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
SW WINDS AROUND 20 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
7 FT. WAVE DETAIL: W 7 FT AT 6 SECONDS AND E 1 FOOT AT 9 SECONDS.
PATCHY FOG. VSBY 1 NM OR LESS.
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: W
6 FT AT 6 SECONDS AND N 2 FT AT 2 SECONDS. SHOWERS LIKELY. PATCHY
FOG IN THE EVENING WITH VSBY 1 NM OR LESS.
THU
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 4 FT AT 7 SECONDS AND N 2 FT AT
4 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT.
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.
SAT AND SAT NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. SHOWERS LIKELY.
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.
ANZ256-191800-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
105 AM EDT TUE MAY 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING
THROUGH WEDNESDAY EVENING...
REST OF TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 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: W 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 WITH GUSTS UP TO 30 KT. SEAS
5 TO 7 FT. WAVE DETAIL: W 7 FT AT 7 SECONDS AND E 2 FT AT
10 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
6 FT. WAVE DETAIL: SW 6 FT AT 7 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG. A CHANCE OF SHOWERS IN THE AFTERNOON. VSBY 1 NM OR
LESS, INCREASING TO 1 TO 3 NM 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 4 TO 6 FT. WAVE DETAIL: SW
6 FT AT 7 SECONDS AND N 2 FT AT 3 SECONDS. A CHANCE OF SHOWERS.
THU
N WINDS 10 TO 15 KT, BECOMING E 5 TO 10 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SW 4 FT AT 7 SECONDS AND
N 2 FT AT 3 SECONDS. A CHANCE OF SHOWERS IN THE MORNING.
THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT.
SEAS 2 TO 3 FT.
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.
SAT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. SHOWERS LIKELY.
SAT NIGHT
E WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. SHOWERS LIKELY.
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.
ANZ232-191800-
NANTUCKET SOUND-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND NE 1 FOOT
AT 3 SECONDS. PATCHY FOG. 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 E 1 FOOT AT
3 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
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 5 SECONDS AND SE 1 FOOT AT
9 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 1 FOOT AT
9 SECONDS. PATCHY FOG IN THE MORNING. A CHANCE OF SHOWERS IN THE
AFTERNOON. VSBY 1 NM OR LESS IN THE MORNING.
WED NIGHT
W WINDS 15 TO 20 KT, BECOMING NW 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 5 SECONDS AND N 2 FT AT 2 SECONDS. A CHANCE OF SHOWERS.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND SW 1 FOOT AT
6 SECONDS.
FRI
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
FRI NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. A CHANCE OF
SHOWERS.
SAT AND SAT NIGHT
E WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT. SEAS AROUND 2 FT. SHOWERS LIKELY.
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.
ANZ233-191800-
VINEYARD SOUND-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND NE 1 FOOT
AT 3 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
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: W 4 FT
AT 5 SECONDS AND E 1 FOOT AT 3 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
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 5 SECONDS AND E 1 FOOT AT
8 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
SW 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 E 1 FOOT AT
8 SECONDS. PATCHY FOG IN THE MORNING. A CHANCE OF SHOWERS IN THE
AFTERNOON. VSBY 1 NM OR LESS IN THE MORNING.
WED NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: SW 4 FT AT
7 SECONDS AND NW 2 FT AT 3 SECONDS. A CHANCE OF SHOWERS.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 3 FT AT 4 SECONDS AND SW 3 FT AT 7 SECONDS.
FRI
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
FRI NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS.
SAT AND SAT NIGHT
E WINDS 10 TO 15 KT. SEAS AROUND 2 FT.
SHOWERS LIKELY.
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.
ANZ234-191800-
BUZZARDS BAY-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 4 SECONDS AND NE 1 FOOT AT 3 SECONDS. PATCHY
FOG. VSBY 1 NM OR LESS.
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
3 FT AT 5 SECONDS AND W 1 FOOT AT 2 SECONDS. PATCHY FOG IN THE
MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND SE 1 FOOT AT
15 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
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 8 SECONDS.
PATCHY FOG IN THE MORNING. SHOWERS LIKELY IN THE AFTERNOON. VSBY
1 NM OR LESS IN THE MORNING.
WED NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT
7 SECONDS AND N 2 FT AT 2 SECONDS. A CHANCE OF SHOWERS IN THE
EVENING.
THU AND THU NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 2 FT AT 3 SECONDS AND SW 2 FT AT 6 SECONDS.
FRI
E WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
FRI NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. A CHANCE OF
SHOWERS.
SAT AND SAT NIGHT
E WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT. SEAS AROUND 2 FT. SHOWERS LIKELY.
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.
ANZ235-191800-
RHODE ISLAND SOUND-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW 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 NE 1 FOOT AT
3 SECONDS. PATCHY FOG. 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 6 SECONDS AND E 1 FOOT AT
3 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
4 TO 6 FT. WAVE DETAIL: SE 6 FT AT 7 SECONDS AND W 3 FT AT
4 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
5 FT. WAVE DETAIL: SW 5 FT AT 7 SECONDS AND SE 3 FT AT 7 SECONDS.
PATCHY FOG IN THE MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON.
VSBY 1 NM OR LESS IN THE MORNING.
WED NIGHT
W WINDS 15 TO 20 KT, BECOMING NW 10 TO 15 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: S 5 FT AT 7 SECONDS AND N
2 FT AT 2 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 7 SECONDS AND N 2 FT AT 4 SECONDS.
FRI
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
FRI NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS.
SAT AND SAT NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. SHOWERS LIKELY.
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.
ANZ237-191800-
BLOCK ISLAND SOUND-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 2 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS. PATCHY
FOG. VSBY 1 NM OR LESS.
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: S 4 FT
AT 6 SECONDS AND E 1 FOOT AT 2 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
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 7 SECONDS AND W 2 FT AT
4 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SW
4 FT AT 7 SECONDS AND W 2 FT AT 4 SECONDS. PATCHY FOG IN THE
MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON. VSBY 1 NM OR LESS
IN THE MORNING.
WED NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: S 4 FT AT
7 SECONDS AND W 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE
EVENING.
THU AND THU NIGHT
N WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 7 SECONDS AND SE 2 FT AT 9 SECONDS.
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.
SAT AND SAT NIGHT
E WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
2 TO 4 FT. SHOWERS LIKELY.
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.
ANZ230-191800-
BOSTON HARBOR-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS AROUND 10 KT. WAVES 1 FOOT OR LESS.
TUE
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES 1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON.
TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
AROUND 2 FT. A CHANCE OF SHOWERS IN THE EVENING.
WED
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT. SHOWERS LIKELY IN THE AFTERNOON.
WED NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. WAVES AROUND 2 FT. SHOWERS LIKELY IN THE EVENING.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
FRI
E WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
FRI NIGHT AND SAT
SW WINDS 5 TO 10 KT, BECOMING E. WAVES
1 FOOT OR LESS. A CHANCE OF SHOWERS.
SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS. SHOWERS
LIKELY.
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.
ANZ236-191800-
NARRAGANSETT BAY-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS AROUND 10 KT. WAVES AROUND 2 FT.
PATCHY FOG. VSBY 1 TO 3 NM.
TUE
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 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. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
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. SHOWERS LIKELY IN
THE AFTERNOON.
WED NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW AFTER MIDNIGHT. WAVES 2 TO 3 FT. SHOWERS LIKELY IN THE
EVENING.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
FRI
E WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
FRI NIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS.
SAT AND SAT NIGHT
E WINDS 5 TO 10 KT. WAVES 2 TO 3 FT. SHOWERS
LIKELY.
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.
ANZ280-191800-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 2 FT AT
9 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE
SW WINDS 15 TO 20 KT. GUSTS UP TO 20 KT, INCREASING TO
30 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: SW 5 FT AT
5 SECONDS AND SE 2 FT AT 9 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 TO 3 NM.
TUE NIGHT
SW WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 4 TO 6 FT. WAVE DETAIL: S
6 FT AT 7 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR
LESS.
WED
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SW 5 FT AT 7 SECONDS. PATCHY FOG IN THE
MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON. VSBY 1 NM OR LESS
IN THE MORNING.
WED NIGHT
W WINDS AROUND 15 KT, BECOMING NW AFTER MIDNIGHT.
GUSTS UP TO 25 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S 4 FT AT
7 SECONDS AND W 3 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE
EVENING.
THU AND THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 5 SECONDS AND SW 2 FT AT
7 SECONDS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, BECOMING SW 10 TO 15 KT
WITH GUSTS UP TO 20 KT. SEAS AROUND 2 FT.
SAT AND SAT NIGHT
E 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.
ANZ281-191800-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND SE 2 FT AT
9 SECONDS. PATCHY DENSE FOG. VSBY 1 NM OR LESS.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. WAVE DETAIL: W 6 FT AT 5 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 WITH GUSTS UP TO 30 KT. SEAS
5 TO 6 FT. WAVE DETAIL: SW 6 FT AT 6 SECONDS AND SE 1 FOOT AT
9 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
SW WINDS AROUND 20 KT WITH GUSTS UP TO 25 KT. SEAS 5 TO
6 FT. WAVE DETAIL: W 6 FT AT 6 SECONDS AND SE 1 FOOT AT
9 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS IN THE AFTERNOON. VSBY
1 NM OR LESS.
WED NIGHT
W WINDS 15 TO 20 KT, BECOMING NW AFTER MIDNIGHT.
GUSTS UP TO 25 KT. SEAS 4 TO 6 FT. WAVE DETAIL: W 6 FT AT
6 SECONDS AND N 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE
EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT. PATCHY FOG IN THE
EVENING WITH VSBY 1 NM OR LESS.
THU
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 4 FT AT 7 SECONDS AND N 3 FT AT 5 SECONDS.
A CHANCE OF SHOWERS IN THE MORNING.
THU NIGHT
S WINDS AROUND 5 KT, BECOMING NW AROUND 5 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT.
FRI
NE WINDS AROUND 5 KT. SEAS 2 TO 3 FT.
FRI NIGHT AND SAT
S WINDS 5 TO 10 KT, BECOMING E. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. SHOWERS LIKELY.
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.
ANZ282-191800-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 4 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND SE 2 FT AT
9 SECONDS. PATCHY DENSE FOG. VSBY 1 NM OR LESS.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. WAVE DETAIL: W 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 WITH GUSTS UP TO 30 KT. SEAS
6 TO 7 FT. WAVE DETAIL: SW 7 FT AT 7 SECONDS AND SE 2 FT AT
9 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
SW WINDS AROUND 20 KT WITH GUSTS UP TO 25 KT. SEAS AROUND
6 FT. WAVE DETAIL: W 6 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG. VSBY 1 NM OR LESS.
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. WAVE DETAIL: W 6 FT
AT 6 SECONDS AND N 2 FT AT 2 SECONDS. A CHANCE OF SHOWERS IN THE
EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT. PATCHY FOG IN THE
EVENING WITH VSBY 1 NM OR LESS.
THU
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 4 FT AT 7 SECONDS AND N 2 FT AT 4 SECONDS.
SHOWERS LIKELY IN THE MORNING.
THU NIGHT
E WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
2 TO 3 FT.
FRI
NE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
FRI NIGHT
SE WINDS AROUND 5 KT. SEAS AROUND 2 FT. A CHANCE OF
SHOWERS.
SAT AND SAT NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 5 FT. SHOWERS LIKELY.
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.
ANZ283-191800-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
105 AM EDT TUE MAY 19 2026
REST OF TONIGHT
SW WINDS AROUND 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 4 FT. WAVE DETAIL: SW 4 FT AT 5 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 4 TO
6 FT. WAVE DETAIL: W 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 WITH GUSTS UP TO 30 KT. SEAS
5 TO 7 FT. WAVE DETAIL: W 7 FT AT 6 SECONDS AND SE 2 FT AT
10 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
WED
SW WINDS AROUND 20 KT WITH GUSTS UP TO 30 KT. SEAS AROUND
6 FT. WAVE DETAIL: W 6 FT AT 7 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM 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 4 TO 6 FT. WAVE DETAIL: SW
6 FT AT 7 SECONDS AND N 2 FT AT 3 SECONDS. A CHANCE OF SHOWERS IN
THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT. PATCHY FOG IN
THE EVENING WITH VSBY 1 NM OR LESS.
THU
N WINDS 10 TO 15 KT, BECOMING NE 5 TO 10 KT IN THE
AFTERNOON. GUSTS UP TO 20 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW
4 FT AT 6 SECONDS AND N 2 FT AT 4 SECONDS. SHOWERS LIKELY IN THE
MORNING.
THU NIGHT
SE WINDS 5 TO 10 KT, BECOMING E AFTER MIDNIGHT. SEAS
2 TO 3 FT.
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.
SAT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
5 FT. SHOWERS LIKELY.
SAT NIGHT
E WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. SHOWERS LIKELY.
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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