556
FZUS51 KBOX 200606
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
106 AM EST SAT DEC 20 2025
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 25 NM
ANZ200-201900-
106 AM EST SAT DEC 20 2025
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
A STRONG COLD FRONT WILL SWEEP ACROSS THE WATERS THIS AFTERNOON
WITH SOUTHERLY STORM FORCE WINDS SHIFTING TO WESTERLY GALE FORCE
GUSTS TONIGHT THROUGH EARLY SATURDAY MORNING. HIGH-PRESSURE SHOULD
BUILD OVER THE WATERS SATURDAY AFTERNOON BEFORE MOVING OFFSHORE,
THEN ANOTHER COLD FRONT WILL MOVE THROUGH ON SUNDAY FOLLOWED BY GALE
FORCE WINDS INTO EARLY MONDAY. HIGH-PRESSURE RETURNS MONDAY, THEN A
FRONTAL SYSTEM MOVES INTO THE WATERS TUESDAY. LOW-PRESSURE DEVELOPS
EAST OF THE WATERS TUESDAY NIGHT, THEN HIGH-PRESSURE BUILDS INTO THE
REGION WEDNESDAY.
ANZ250-201900-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING
REST OF TONIGHT
W WINDS 30 TO 35 KT WITH GUSTS UP TO 40 KT.
SEAS 8 TO 11 FT. WAVE DETAIL: W 8 FT AT 7 SECONDS AND SE 7 FT AT
11 SECONDS.
SAT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT, DIMINISHING TO
15 TO 20 KT WITH GUSTS UP TO 25 KT IN THE AFTERNOON. SEAS 7 TO
10 FT, SUBSIDING TO 5 TO 7 FT IN THE AFTERNOON. WAVE DETAIL: W
8 FT AT 7 SECONDS AND SE 6 FT AT 11 SECONDS, BECOMING W 5 FT AT
7 SECONDS AND SE 5 FT AT 11 SECONDS.
SAT NIGHT
SW WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 4 TO 6 FT. WAVE DETAIL: S
5 FT AT 6 SECONDS AND SE 3 FT AT 11 SECONDS.
SUN
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 3 FT AT
10 SECONDS.
SUN NIGHT AND MON
NW WINDS 25 TO 30 KT. SEAS 5 TO 7 FT. WAVE
DETAIL: W 7 FT AT 7 SECONDS AND SE 3 FT AT 11 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. WAVE DETAIL: NW 3 FT AT 5 SECONDS AND E 1 FOOT AT
10 SECONDS. A CHANCE OF SNOW AFTER MIDNIGHT.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. RAIN WITH SNOW LIKELY. VSBY 1 NM OR LESS.
TUE NIGHT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 5 FT. RAIN LIKELY.
WED AND WED NIGHT
NW WINDS 20 TO 25 KT, DIMINISHING TO 15 TO
20 KT. GUSTS UP TO 30 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.
ANZ251-201900-
MASSACHUSETTS BAY AND IPSWICH BAY-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING
REST OF TONIGHT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND SE 5 FT AT
11 SECONDS.
SAT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT, DIMINISHING TO
10 TO 15 KT WITH GUSTS UP TO 20 KT IN THE AFTERNOON. SEAS 4 TO
6 FT. WAVE DETAIL: NW 5 FT AT 5 SECONDS AND SE 4 FT AT
11 SECONDS.
SAT NIGHT
SW WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 2 TO 4 FT. WAVE DETAIL: S
4 FT AT 4 SECONDS AND S 3 FT AT 8 SECONDS.
SUN
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND S 3 FT AT 7 SECONDS.
SUN NIGHT AND MON
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: NW 4 FT AT 5 SECONDS AND SW 2 FT AT
8 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS AND E
1 FOOT AT 10 SECONDS. A CHANCE OF SNOW AFTER MIDNIGHT.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. SNOW WITH RAIN LIKELY. VSBY 1 NM OR LESS.
TUE NIGHT
W WINDS 20 TO 25 KT. SEAS AROUND 3 FT. RAIN LIKELY.
WED AND WED NIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT,
DIMINISHING TO 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.
ANZ231-201900-
CAPE COD BAY-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING
REST OF TONIGHT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: W 5 FT AT 5 SECONDS AND SW 4 FT AT
8 SECONDS.
SAT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT, DIMINISHING TO
10 TO 15 KT WITH GUSTS UP TO 20 KT IN THE AFTERNOON. SEAS 3 TO
5 FT. WAVE DETAIL: NW 4 FT AT 5 SECONDS AND SW 4 FT AT 8 SECONDS.
SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS
2 TO 4 FT. WAVE DETAIL: S 4 FT AT 9 SECONDS AND SW 3 FT AT
4 SECONDS.
SUN
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
4 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND SE 2 FT AT
10 SECONDS.
SUN NIGHT AND MON
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: NW 5 FT AT 6 SECONDS AND SW 2 FT AT
8 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: NW 3 FT AT 6 SECONDS AND E
1 FOOT AT 10 SECONDS. A CHANCE OF SNOW AFTER MIDNIGHT.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. RAIN WITH SNOW LIKELY. VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 20 TO 25 KT. SEAS 3 TO 4 FT. RAIN LIKELY.
WED AND WED NIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT,
DIMINISHING TO 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.
ANZ254-201900-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING
REST OF TONIGHT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT.
SEAS 9 TO 13 FT, EXCEPT 13 TO 17 FT S AND E OF NANTUCKET. WAVE
DETAIL: S 10 FT AT 11 SECONDS AND W 7 FT AT 6 SECONDS.
SAT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT, DIMINISHING TO
15 TO 20 KT IN THE AFTERNOON. SEAS 8 TO 11 FT, SUBSIDING TO 5 TO
8 FT IN THE AFTERNOON. WAVE DETAIL: S 8 FT AT 11 SECONDS AND W
7 FT AT 6 SECONDS, BECOMING SE 6 FT AT 11 SECONDS AND NW 5 FT AT
6 SECONDS.
SAT NIGHT
SW WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 5 TO 7 FT. WAVE DETAIL: S
6 FT AT 9 SECONDS AND SW 5 FT AT 5 SECONDS.
SUN
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND NW 4 FT AT 5 SECONDS.
SUN NIGHT AND MON
NW WINDS 25 TO 30 KT. SEAS 5 TO 8 FT. WAVE
DETAIL: NW 7 FT AT 6 SECONDS AND SW 4 FT AT 8 SECONDS.
MON NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. WAVE DETAIL: N 4 FT AT 7 SECONDS AND W 2 FT AT
4 SECONDS.
TUE
SW WINDS 20 TO 25 KT. SEAS 3 TO 5 FT. RAIN WITH A CHANCE
OF SNOW. VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 25 TO 30 KT. SEAS 4 TO 6 FT. RAIN LIKELY.
WED
NW WINDS 25 TO 30 KT. SEAS 4 TO 6 FT.
WED NIGHT
NW WINDS 15 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.
ANZ255-201900-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING
REST OF TONIGHT
W WINDS 30 TO 40 KT. SEAS 12 TO 16 FT. WAVE
DETAIL: W 13 FT AT 9 SECONDS AND S 12 FT AT 11 SECONDS.
SAT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT, DIMINISHING TO
15 TO 20 KT IN THE AFTERNOON. SEAS 9 TO 13 FT, SUBSIDING TO 6 TO
9 FT IN THE AFTERNOON. WAVE DETAIL: S 12 FT AT 11 SECONDS AND W
10 FT AT 10 SECONDS, BECOMING SW 7 FT AT 10 SECONDS AND S 6 FT AT
11 SECONDS.
SAT NIGHT
SW WINDS 20 TO 25 KT, INCREASING TO 25 TO 30 KT WITH
GUSTS UP TO 35 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT, BUILDING TO
6 TO 9 FT AFTER MIDNIGHT. WAVE DETAIL: SW 5 FT AT 5 SECONDS AND
SW 5 FT AT 10 SECONDS, BECOMING SW 9 FT AT 6 SECONDS AND SE 3 FT
AT 10 SECONDS.
SUN
W WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 7 TO
10 FT. WAVE DETAIL: SW 10 FT AT 8 SECONDS AND W 2 FT AT
5 SECONDS.
SUN NIGHT
NW WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
7 TO 10 FT. WAVE DETAIL: W 10 FT AT 8 SECONDS AND NW 8 FT AT
5 SECONDS.
MON
NW WINDS 25 TO 30 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 6 TO 9 FT, SUBSIDING TO 4 TO 6 FT IN THE
AFTERNOON. WAVE DETAIL: NW 8 FT AT 6 SECONDS AND W 6 FT AT
8 SECONDS, BECOMING NW 6 FT AT 6 SECONDS AND W 3 FT AT 7 SECONDS.
MON NIGHT
NW WINDS 15 TO 20 KT. SEAS 3 TO 5 FT.
TUE
SW WINDS 25 TO 30 KT. SEAS 4 TO 6 FT. RAIN. VSBY 1 TO
3 NM.
TUE NIGHT
W WINDS 25 TO 35 KT. SEAS 6 TO 9 FT. RAIN LIKELY.
WED
NW WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 5 TO
7 FT.
WED NIGHT
NW WINDS 15 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.
ANZ256-201900-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING
REST OF TONIGHT
W WINDS 30 TO 40 KT WITH GUSTS UP TO 45 KT.
SEAS 12 TO 16 FT. WAVE DETAIL: S 12 FT AT 11 SECONDS AND W 10 FT
AT 9 SECONDS.
SAT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT, DIMINISHING TO
15 TO 20 KT IN THE AFTERNOON. SEAS 9 TO 12 FT, SUBSIDING TO 6 TO
9 FT IN THE AFTERNOON. WAVE DETAIL: S 11 FT AT 11 SECONDS AND SW
8 FT AT 9 SECONDS, BECOMING S 7 FT AT 10 SECONDS AND SW 6 FT AT
10 SECONDS.
SAT NIGHT
SW WINDS 20 TO 25 KT, INCREASING TO 25 TO 30 KT
AFTER MIDNIGHT. SEAS 5 TO 7 FT, BUILDING TO 7 TO 10 FT AFTER
MIDNIGHT. WAVE DETAIL: SW 5 FT AT 5 SECONDS AND S 5 FT AT
10 SECONDS, BECOMING S 10 FT AT 9 SECONDS AND SW 6 FT AT
6 SECONDS.
SUN
W WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 7 TO
10 FT. WAVE DETAIL: SW 10 FT AT 8 SECONDS AND W 3 FT AT
5 SECONDS.
SUN NIGHT
NW WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
6 TO 9 FT. WAVE DETAIL: SW 8 FT AT 8 SECONDS AND NW 6 FT AT
5 SECONDS.
MON
NW WINDS 25 TO 30 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 5 TO 7 FT. WAVE DETAIL: NW 6 FT AT 5 SECONDS AND
SW 5 FT AT 7 SECONDS.
MON NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 4 FT.
TUE
SW WINDS 25 TO 30 KT. SEAS 4 TO 6 FT. RAIN.
TUE NIGHT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS
5 TO 8 FT. A CHANCE OF RAIN.
WED
NW WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT. SEAS 4 TO
6 FT.
WED NIGHT
NW WINDS 15 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.
ANZ232-201900-
NANTUCKET SOUND-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING
REST OF TONIGHT
W WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT.
SEAS 6 TO 9 FT. WAVE DETAIL: W 5 FT AT 6 SECONDS AND SW 5 FT AT
9 SECONDS.
SAT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT, DIMINISHING TO
15 TO 20 KT IN THE AFTERNOON. SEAS 5 TO 7 FT, SUBSIDING TO 3 TO
5 FT IN THE AFTERNOON. WAVE DETAIL: W 5 FT AT 6 SECONDS AND SW
3 FT AT 9 SECONDS, BECOMING NW 3 FT AT 5 SECONDS AND SW 2 FT AT
9 SECONDS.
SAT NIGHT
SW WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 2 TO 4 FT, BUILDING TO
4 TO 6 FT AFTER MIDNIGHT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND
SW 2 FT AT 9 SECONDS, BECOMING SW 4 FT AT 4 SECONDS AND S 4 FT AT
9 SECONDS.
SUN
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND SW 4 FT AT 8 SECONDS.
SUN NIGHT
NW WINDS 25 TO 30 KT. SEAS 4 TO 6 FT. WAVE DETAIL:
NW 4 FT AT 6 SECONDS AND SW 2 FT AT 8 SECONDS.
MON
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT, DIMINISHING
TO 15 TO 20 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: NW
4 FT AT 6 SECONDS AND SW 2 FT AT 8 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT.
TUE
SW WINDS 20 TO 25 KT. SEAS 2 TO 4 FT. RAIN WITH A CHANCE
OF SNOW. VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 5 FT. RAIN LIKELY.
WED AND WED NIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT,
DIMINISHING TO 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.
ANZ233-201900-
VINEYARD SOUND-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING
REST OF TONIGHT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT.
SEAS 7 TO 10 FT. WAVE DETAIL: SW 9 FT AT 11 SECONDS AND SW 7 FT
AT 9 SECONDS.
SAT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT, DIMINISHING TO
10 TO 15 KT WITH GUSTS UP TO 20 KT IN THE AFTERNOON. SEAS 5 TO
8 FT, SUBSIDING TO 4 TO 6 FT IN THE AFTERNOON. WAVE DETAIL: SW
8 FT AT 11 SECONDS AND SW 6 FT AT 9 SECONDS, BECOMING S 5 FT AT
11 SECONDS AND SW 4 FT AT 9 SECONDS.
SAT NIGHT
SW WINDS 20 TO 25 KT, INCREASING TO 25 TO 30 KT WITH
GUSTS UP TO 35 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT, BUILDING TO
5 TO 7 FT AFTER MIDNIGHT. WAVE DETAIL: SW 4 FT AT 5 SECONDS AND
SW 4 FT AT 9 SECONDS, BECOMING SW 7 FT AT 8 SECONDS AND SW 5 FT
AT 5 SECONDS.
SUN
SW WINDS 25 TO 30 KT, BECOMING W 20 TO 25 KT IN THE
AFTERNOON. SEAS 5 TO 7 FT. WAVE DETAIL: SW 7 FT AT 8 SECONDS AND
W 2 FT AT 5 SECONDS.
SUN NIGHT
NW WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT
AFTER MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: SW 5 FT AT 8 SECONDS
AND NW 4 FT AT 5 SECONDS.
MON
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT, DIMINISHING
TO AROUND 15 KT WITH GUSTS UP TO 20 KT IN THE AFTERNOON. SEAS
3 TO 5 FT, SUBSIDING TO 2 TO 3 FT IN THE AFTERNOON. WAVE DETAIL:
NW 4 FT AT 6 SECONDS AND SW 4 FT AT 7 SECONDS, BECOMING NW 3 FT
AT 6 SECONDS AND SW 2 FT AT 7 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT. SEAS AROUND 2 FT. A CHANCE OF
SNOW AFTER MIDNIGHT.
TUE
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
4 FT. RAIN WITH A CHANCE OF SNOW. VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 25 TO 30 KT. SEAS 3 TO 5 FT. RAIN LIKELY.
WED
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
4 FT.
WED NIGHT
NW WINDS 10 TO 15 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.
ANZ234-201900-
BUZZARDS BAY-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING
REST OF TONIGHT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 35 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: S 7 FT AT 11 SECONDS AND SW 6 FT AT
9 SECONDS.
SAT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT, DIMINISHING TO
10 TO 15 KT WITH GUSTS UP TO 20 KT IN THE AFTERNOON. SEAS 4 TO
6 FT, SUBSIDING TO 2 TO 4 FT IN THE AFTERNOON. WAVE DETAIL: SW
6 FT AT 11 SECONDS AND SW 5 FT AT 9 SECONDS, BECOMING S 4 FT AT
11 SECONDS AND SW 3 FT AT 9 SECONDS.
SAT NIGHT
SW WINDS 20 TO 25 KT, INCREASING TO 25 TO 30 KT WITH
GUSTS UP TO 35 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT, BUILDING TO
4 TO 6 FT AFTER MIDNIGHT. WAVE DETAIL: SW 4 FT AT 4 SECONDS AND
SW 3 FT AT 9 SECONDS, BECOMING SW 6 FT AT 9 SECONDS AND SW 4 FT
AT 5 SECONDS.
SUN
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 4 TO
6 FT. WAVE DETAIL: SW 6 FT AT 6 SECONDS AND SE 2 FT AT
10 SECONDS.
SUN NIGHT AND MON
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: NW 4 FT AT 6 SECONDS AND SW 4 FT AT
8 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
N 2 FT AT 6 SECONDS AND SW 1 FOOT AT 6 SECONDS. A CHANCE OF SNOW
AFTER MIDNIGHT.
TUE
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
4 FT. RAIN WITH A CHANCE OF SNOW. VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 20 TO 25 KT. SEAS 3 TO 4 FT. RAIN LIKELY.
WED AND WED NIGHT
NW WINDS 20 TO 25 KT, DIMINISHING TO 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.
ANZ235-201900-
RHODE ISLAND SOUND-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING
REST OF TONIGHT
W WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT.
SEAS 9 TO 13 FT. WAVE DETAIL: S 12 FT AT 11 SECONDS AND SW 7 FT
AT 8 SECONDS.
SAT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT, DIMINISHING TO
10 TO 15 KT WITH GUSTS UP TO 20 KT IN THE AFTERNOON. SEAS 7 TO
10 FT, SUBSIDING TO 5 TO 7 FT IN THE AFTERNOON. WAVE DETAIL: S
10 FT AT 11 SECONDS AND SW 6 FT AT 9 SECONDS, BECOMING S 7 FT AT
11 SECONDS AND SW 4 FT AT 9 SECONDS.
SAT NIGHT
SW WINDS 20 TO 25 KT, INCREASING TO 25 TO 30 KT WITH
GUSTS UP TO 35 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT, BUILDING TO
5 TO 8 FT AFTER MIDNIGHT. WAVE DETAIL: SW 5 FT AT 5 SECONDS AND S
5 FT AT 10 SECONDS, BECOMING S 8 FT AT 9 SECONDS AND SW 6 FT AT
5 SECONDS.
SUN
SW WINDS 25 TO 30 KT, BECOMING W 20 TO 25 KT IN THE
AFTERNOON. SEAS 5 TO 8 FT. WAVE DETAIL: SW 8 FT AT 7 SECONDS AND
SE 2 FT AT 10 SECONDS.
SUN NIGHT
NW WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT
AFTER MIDNIGHT. SEAS 5 TO 7 FT. WAVE DETAIL: SW 6 FT AT 8 SECONDS
AND NW 4 FT AT 5 SECONDS.
MON
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT, DIMINISHING
TO AROUND 15 KT WITH GUSTS UP TO 20 KT IN THE AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: NW 4 FT AT 5 SECONDS AND SW 4 FT AT
7 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF
SNOW AFTER MIDNIGHT.
TUE
SW WINDS 25 TO 30 KT. SEAS 3 TO 5 FT. RAIN WITH A CHANCE
OF SNOW. VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 25 TO 30 KT. SEAS 4 TO 6 FT. A CHANCE OF
RAIN.
WED
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT.
WED NIGHT
NW 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.
ANZ237-201900-
BLOCK ISLAND SOUND-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING
REST OF TONIGHT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT.
SEAS 8 TO 11 FT. WAVE DETAIL: S 9 FT AT 11 SECONDS AND W 7 FT AT
6 SECONDS.
SAT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT, DIMINISHING TO
10 TO 15 KT WITH GUSTS UP TO 20 KT IN THE AFTERNOON. SEAS 6 TO
9 FT, SUBSIDING TO 4 TO 6 FT IN THE AFTERNOON. WAVE DETAIL: S
8 FT AT 11 SECONDS AND W 4 FT AT 6 SECONDS, BECOMING S 5 FT AT
11 SECONDS AND W 3 FT AT 5 SECONDS.
SAT NIGHT
SW WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. SEAS 3 TO 5 FT, BUILDING TO
5 TO 7 FT AFTER MIDNIGHT. WAVE DETAIL: SW 4 FT AT 4 SECONDS AND S
4 FT AT 10 SECONDS, BECOMING S 6 FT AT 9 SECONDS AND SW 5 FT AT
5 SECONDS.
SUN
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 5 TO
7 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND W 4 FT AT 5 SECONDS.
SUN NIGHT
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
4 TO 6 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND S 4 FT AT
8 SECONDS.
MON
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT, DIMINISHING
TO 10 TO 15 KT WITH GUSTS UP TO 20 KT IN THE AFTERNOON. SEAS 3 TO
5 FT, SUBSIDING TO 2 TO 3 FT IN THE AFTERNOON. WAVE DETAIL: NW
4 FT AT 5 SECONDS AND SW 2 FT AT 7 SECONDS, BECOMING NW 2 FT AT
5 SECONDS AND SW 1 FOOT AT 7 SECONDS.
MON NIGHT
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. A CHANCE OF
SNOW AFTER MIDNIGHT.
TUE
SW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT. RAIN WITH A CHANCE OF SNOW. VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
3 TO 5 FT. A CHANCE OF RAIN.
WED
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
4 FT.
WED NIGHT
NW WINDS 10 TO 15 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.
ANZ230-201900-
BOSTON HARBOR-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 7 AM EST THIS MORNING
REST OF TONIGHT
W WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT.
WAVES AROUND 2 FT.
SAT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT, DIMINISHING TO
10 TO 15 KT WITH GUSTS UP TO 20 KT IN THE AFTERNOON. WAVES AROUND
2 FT.
SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES
AROUND 2 FT.
SUN
SW WINDS 15 TO 20 KT, BECOMING W 20 TO 25 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. WAVES AROUND 2 FT.
SUN NIGHT AND MON
NW WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT.
WAVES AROUND 2 FT.
MON NIGHT
W WINDS 10 TO 15 KT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. A CHANCE OF SNOW AFTER MIDNIGHT.
TUE
SW WINDS 15 TO 20 KT. WAVES AROUND 2 FT. SNOW WITH RAIN
LIKELY. VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 20 TO 25 KT. WAVES AROUND 2 FT. A CHANCE OF
RAIN.
WED AND WED NIGHT
NW WINDS 20 TO 25 KT, DIMINISHING TO 10 TO
15 KT. WAVES 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.
ANZ236-201900-
NARRAGANSETT BAY-
106 AM EST SAT DEC 20 2025
..GALE WARNING IN EFFECT UNTIL 5 AM EST EARLY THIS MORNING
REST OF TONIGHT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT.
WAVES 5 TO 7 FT.
SAT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT, DIMINISHING TO
AROUND 10 KT IN THE AFTERNOON. WAVES 2 TO 4 FT. AT THE BAY
ENTRANCE, WAVES 5 TO 7 FT, SUBSIDING TO 3 TO 5 FT IN THE
AFTERNOON.
SAT NIGHT
SW WINDS 15 TO 20 KT, INCREASING TO 20 TO 25 KT
AFTER MIDNIGHT. GUSTS UP TO 30 KT. WAVES 3 TO 5 FT.
SUN
W WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. WAVES 3 TO
5 FT.
SUN NIGHT AND MON
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
WAVES 2 TO 3 FT.
MON NIGHT
W WINDS AROUND 10 KT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. A CHANCE OF SNOW AFTER MIDNIGHT.
TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES 2 TO
3 FT. RAIN AND SNOW LIKELY. VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES
2 TO 3 FT. A CHANCE OF RAIN.
WED AND WED NIGHT
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
DIMINISHING TO 5 TO 10 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.
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