780
FZUS51 KBOX 182305
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
705 PM EDT THU SEP 18 2025
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 25 NM
ANZ200-191200-
705 PM EDT THU SEP 18 2025
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
LOW PRESSURE SYSTEM LIFTS NORTHEAST INTO THE CANADIAN MARITIME
OVERNIGHT, FOLLOWED BY A DRY COLD FRONT PASSAGE ON FRIDAY. THIS
FRONT SHIFTS WINDS TO THE NORTHWEST. STRONG CANADIAN HIGH PRESSURE
DROPS SOUTH AND REMAINS IN CONTROL SATURDAY THROUGH EARLY NEXT WEEK.
ANZ250-191200-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
705 PM EDT THU SEP 18 2025
TONIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND SW 2 FT AT
3 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM, DECREASING TO 1 NM OR LESS
AFTER MIDNIGHT.
FRI
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING N
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND W 2 FT AT 3 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N 4 FT
AT 4 SECONDS AND SE 2 FT AT 7 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N
3 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 12 SECONDS AND
SE 2 FT AT 3 SECONDS.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 3 FT AT 11 SECONDS AND SE 2 FT AT
4 SECONDS.
MON NIGHT THROUGH TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP
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.
ANZ251-191200-
MASSACHUSETTS BAY AND IPSWICH BAY-
705 PM EDT THU SEP 18 2025
TONIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS AND SW 1 FOOT AT
3 SECONDS.
FRI
NW WINDS 10 TO 15 KT, BECOMING NE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS AND N 1 FOOT AT
3 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND E
2 FT AT 7 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING E
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT
AT 5 SECONDS AND E 1 FOOT AT 8 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS AND S 1 FOOT AT
2 SECONDS.
SUN AND SUN NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 2 FT AT 4 SECONDS AND E 2 FT AT 12 SECONDS.
MON THROUGH TUE NIGHT
W WINDS 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.
ANZ231-191200-
CAPE COD BAY-
705 PM EDT THU SEP 18 2025
TONIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND N 1 FOOT AT
3 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
FRI
NW WINDS AROUND 10 KT, BECOMING N IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND N 1 FOOT AT
3 SECONDS.
FRI NIGHT
NE WINDS 10 TO 15 KT, BECOMING N 15 TO 20 KT WITH
GUSTS UP TO 25 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: N
3 FT AT 4 SECONDS AND N 2 FT AT 4 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N
3 FT AT 5 SECONDS AND S 1 FOOT AT 5 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND
2 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS AND SE 2 FT AT 12 SECONDS.
MON THROUGH TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND SE
3 FT AT 13 SECONDS.
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.
ANZ254-191200-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
705 PM EDT THU SEP 18 2025
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING W 10 TO 15 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND
SW 2 FT AT 4 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
FRI
NW WINDS AROUND 10 KT, BECOMING N IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND N 2 FT AT
3 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
FRI NIGHT
NE WINDS 5 TO 10 KT, BECOMING N 15 TO 20 KT WITH
GUSTS UP TO 25 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: N
3 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS.
SAT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, DIMINISHING
TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: NE
3 FT AT 5 SECONDS AND N 2 FT AT 5 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
SE WINDS 5 TO 10 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 3 FT AT 12 SECONDS AND N 2 FT AT 6 SECONDS.
MON THROUGH TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 11 SECONDS AND SW
3 FT AT 4 SECONDS.
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.
ANZ255-191200-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
705 PM EDT THU SEP 18 2025
TONIGHT
W WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND W 2 FT AT 4 SECONDS. PATCHY FOG. VSBY 1 NM
OR LESS.
FRI
NW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND W 2 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
FRI NIGHT
E WINDS 5 TO 10 KT, BECOMING NE 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND SW
2 FT AT 6 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND
SE 2 FT AT 8 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 2 TO
4 FT. WAVE DETAIL: E 3 FT AT 4 SECONDS AND SE 3 FT AT 12 SECONDS.
MON THROUGH TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 11 SECONDS AND SW
3 FT AT 4 SECONDS.
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.
ANZ256-191200-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
705 PM EDT THU SEP 18 2025
TONIGHT
W WINDS 10 TO 15 KT. SEAS AROUND 3 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND SW 2 FT AT 4 SECONDS.
FRI
NW WINDS AROUND 10 KT, BECOMING W IN THE AFTERNOON. SEAS
AROUND 3 FT. WAVE DETAIL: SE 3 FT AT 7 SECONDS AND W 2 FT AT
4 SECONDS.
FRI NIGHT
NW WINDS 10 TO 15 KT, BECOMING NE 15 TO 20 KT WITH
GUSTS UP TO 25 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: NE
4 FT AT 4 SECONDS AND W 2 FT AT 4 SECONDS.
SAT
NE WINDS 15 TO 20 KT, BECOMING E 10 TO 15 KT IN THE
AFTERNOON. 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.
SAT NIGHT THROUGH SUN NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 4 FT AT 12 SECONDS AND SE 3 FT AT
5 SECONDS.
MON THROUGH TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 11 SECONDS AND SW
3 FT AT 4 SECONDS.
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.
ANZ232-191200-
NANTUCKET SOUND-
705 PM EDT THU SEP 18 2025
TONIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND
W 1 FOOT AT 2 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM.
FRI
NW WINDS AROUND 10 KT, BECOMING N IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND W 1 FOOT AT
4 SECONDS.
FRI NIGHT
E WINDS 5 TO 10 KT, BECOMING NE 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND
NW 1 FOOT AT 3 SECONDS.
SAT
NE WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: N 3 FT AT 4 SECONDS AND S
1 FOOT AT 5 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
SE WINDS 10 TO 15 KT. SEAS AROUND
2 FT. WAVE DETAIL: NE 2 FT AT 5 SECONDS AND SE 1 FOOT AT
8 SECONDS.
MON THROUGH TUE NIGHT
SW WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
WAVE DETAIL: SW 3 FT AT 4 SECONDS AND SE 3 FT AT 10 SECONDS.
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.
ANZ233-191200-
VINEYARD SOUND-
705 PM EDT THU SEP 18 2025
TONIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SE 2 FT AT 7 SECONDS.
FRI
NW WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND NE 1 FOOT AT
3 SECONDS.
FRI NIGHT
E WINDS 5 TO 10 KT, BECOMING NE 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: N
2 FT AT 3 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND S 1 FOOT AT
5 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND
2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND N 1 FOOT AT
4 SECONDS.
MON THROUGH TUE NIGHT
SW 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 SE
3 FT AT 11 SECONDS.
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.
ANZ234-191200-
BUZZARDS BAY-
705 PM EDT THU SEP 18 2025
TONIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 7 SECONDS AND SW 1 FOOT AT 4 SECONDS.
FRI
NW WINDS AROUND 10 KT, BECOMING W IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND W 1 FOOT AT
3 SECONDS.
FRI NIGHT
E WINDS 5 TO 10 KT, BECOMING N 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 1 FOOT OR LESS, THEN
AROUND 2 FT AFTER MIDNIGHT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS
AND SW 1 FOOT AT 5 SECONDS, BECOMING N 2 FT AT 4 SECONDS AND SW
1 FOOT AT 5 SECONDS.
SAT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS AROUND 2 FT. WAVE DETAIL: N 2 FT AT 4 SECONDS AND S 1 FOOT
AT 5 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
SE WINDS 5 TO 10 KT. SEAS AROUND
2 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND N 1 FOOT AT
5 SECONDS.
MON AND MON NIGHT
S WINDS 10 TO 15 KT, BECOMING SW. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 10 SECONDS AND SE 2 FT AT
11 SECONDS.
TUE AND TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 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.
ANZ235-191200-
RHODE ISLAND SOUND-
705 PM EDT THU SEP 18 2025
TONIGHT
W WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
FRI
NW WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND SE 2 FT AT
7 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT, BECOMING NE 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 3 SECONDS AND S
2 FT AT 7 SECONDS.
SAT
NE WINDS 15 TO 20 KT, BECOMING E 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS AND
SE 2 FT AT 8 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS AND SE 2 FT AT
13 SECONDS.
MON THROUGH TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 11 SECONDS AND SW
3 FT AT 4 SECONDS.
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.
ANZ237-191200-
BLOCK ISLAND SOUND-
705 PM EDT THU SEP 18 2025
TONIGHT
W WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 6 SECONDS AND W 1 FOOT AT 3 SECONDS.
FRI
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND W 1 FOOT AT
3 SECONDS.
FRI NIGHT
N WINDS 10 TO 15 KT, BECOMING NE 15 TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 3 SECONDS AND S
2 FT AT 6 SECONDS.
SAT
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS AND SE 2 FT AT
8 SECONDS.
SAT NIGHT THROUGH SUN NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SE 2 FT AT 6 SECONDS AND SE 2 FT AT
13 SECONDS.
MON THROUGH TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 4 FT AT 11 SECONDS AND SW
2 FT AT 3 SECONDS.
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.
ANZ230-191200-
BOSTON HARBOR-
705 PM EDT THU SEP 18 2025
TONIGHT
S WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
FRI
NW WINDS AROUND 10 KT. WAVES AROUND 2 FT.
FRI NIGHT
N WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
SAT
NE WINDS 10 TO 15 KT, BECOMING E 5 TO 10 KT IN THE
AFTERNOON. WAVES AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS.
SAT NIGHT
SE WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
SUN AND SUN NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
MON THROUGH TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
ANZ236-191200-
NARRAGANSETT BAY-
705 PM EDT THU SEP 18 2025
TONIGHT
SW WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. WAVES
AROUND 2 FT.
FRI
NW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
FRI NIGHT
N WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. WAVES AROUND 2 FT.
SAT
NE WINDS 10 TO 15 KT, BECOMING E 5 TO 10 KT IN THE
AFTERNOON. WAVES AROUND 2 FT.
SAT NIGHT THROUGH SUN NIGHT
SE WINDS 5 TO 10 KT. WAVES AROUND
2 FT.
MON THROUGH TUE NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 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.
FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT
WWW.WEATHER.GOV/BOSTON
YOU CAN FOLLOW US ON FACEBOOK AT
WWW.FACEBOOK.COM/NWSBOSTON
YOU CAN FOLLOW US ON TWITTER AT
@NWSBOSTON
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page