731
FZUS51 KBOX 150806
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
406 AM EDT FRI AUG 15 2025
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 25 NM
ANZ200-152100-
406 AM EDT FRI AUG 15 2025
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
HIGH PRES BUILDS SOUTHWARD FROM QUEBEC TODAY AND TONIGHT SHIFTING
EAST OF THE REGION SAT. A COLD FRONT CROSSES THE REGION ON SUN
FOLLOWED BY ANOTHER HIGH PRES SYSTEM BUILDING DOWN FROM EASTERN.
TROPICAL STORM ERIN WHICH IS EXPECTED TO BECOME A MAJOR HURRICANE
THIS WEEKEND IN THE OPEN ATLANTIC WILL LIKELY PASS WELL E OF OUR
WATERS LATER NEXT WEEK. HOWEVER...LARGE SOUTHEAST SWELL MAY IMPACT
OUR WATERS DURING THE UPCOMING WORK WEEK.
ANZ250-152100-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
4 FT. WAVE DETAIL: NE 4 FT AT 5 SECONDS AND SE 1 FOOT AT
4 SECONDS. PATCHY FOG THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
3 FT AT 5 SECONDS AND SE 2 FT AT 8 SECONDS.
SAT
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 6 SECONDS AND E 1 FOOT AT
15 SECONDS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND SE 2 FT AT
9 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 2 FT AT 10 SECONDS.
A CHANCE OF SHOWERS AND TSTMS IN THE AFTERNOON.
SUN NIGHT
W WINDS 15 TO 20 KT, BECOMING N AFTER MIDNIGHT.
GUSTS UP TO 30 KT. SEAS 3 TO 5 FT. WAVE DETAIL: NE 5 FT AT
6 SECONDS AND SW 3 FT AT 4 SECONDS. SCATTERED SHOWERS. A CHANCE
OF TSTMS IN THE EVENING.
MON
NE WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 3 TO
5 FT.
MON NIGHT THROUGH TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ251-152100-
MASSACHUSETTS BAY AND IPSWICH BAY-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS AND SE 1 FOOT AT
4 SECONDS. PATCHY FOG THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
E WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: NE 3 FT AT 5 SECONDS AND E 1 FOOT AT
8 SECONDS.
SAT
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NE 2 FT AT 5 SECONDS AND E 1 FOOT AT
8 SECONDS.
SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 4 SECONDS AND E 1 FOOT AT
8 SECONDS.
SUN
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 E 1 FOOT AT
7 SECONDS. A CHANCE OF SHOWERS AND TSTMS IN THE AFTERNOON.
SUN NIGHT
NW WINDS 10 TO 15 KT, BECOMING N 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 3 FT
AT 6 SECONDS AND W 2 FT AT 3 SECONDS. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS IN THE EVENING.
MON THROUGH TUE NIGHT
S WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ231-152100-
CAPE COD BAY-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT THIS MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND S 1 FOOT AT
5 SECONDS. PATCHY FOG THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
2 FT AT 5 SECONDS AND S 1 FOOT AT 7 SECONDS.
SAT
E WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS.
SUN
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 E 1 FOOT AT
5 SECONDS. A CHANCE OF SHOWERS AND TSTMS IN THE AFTERNOON.
SUN NIGHT
W WINDS AROUND 15 KT, BECOMING N AFTER MIDNIGHT.
GUSTS UP TO 30 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 2 FT AT
4 SECONDS AND NE 2 FT AT 6 SECONDS. SCATTERED SHOWERS. A CHANCE
OF TSTMS IN THE EVENING.
MON THROUGH TUE
E WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT.
SEAS 2 TO 4 FT.
TUE NIGHT
SE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ254-152100-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 3 FT AT 4 SECONDS AND SE 2 FT AT 9 SECONDS.
PATCHY FOG. VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM THIS
AFTERNOON.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: N
2 FT AT 5 SECONDS AND S 2 FT AT 7 SECONDS. PATCHY FOG IN THE
EVENING WITH VSBY 1 NM OR LESS.
SAT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT
5 SECONDS AND SE 2 FT AT 9 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 5 SECONDS AND SE 2 FT AT 11 SECONDS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 2 FT AT 3 SECONDS AND E 2 FT AT 6 SECONDS.
A CHANCE OF SHOWERS AND TSTMS IN THE AFTERNOON.
SUN NIGHT
SW WINDS AROUND 15 KT, BECOMING N AFTER MIDNIGHT.
GUSTS UP TO 30 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT
4 SECONDS AND NW 3 FT AT 4 SECONDS. SCATTERED SHOWERS. A CHANCE
OF TSTMS IN THE EVENING.
MON THROUGH TUE NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO
30 KT. SEAS 3 TO 5 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ255-152100-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: E 2 FT AT 7 SECONDS AND S 2 FT AT 7 SECONDS.
PATCHY FOG THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
E 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT
AT 4 SECONDS AND S 2 FT AT 7 SECONDS. PATCHY FOG. VSBY 1 NM OR
LESS, INCREASING TO 1 TO 3 NM AFTER MIDNIGHT.
SAT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE 2 FT
AT 5 SECONDS AND SE 1 FOOT AT 7 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 10 SECONDS AND S 1 FOOT AT 5 SECONDS.
SUN
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 E 2 FT AT 6 SECONDS.
SUN NIGHT
SW WINDS AROUND 15 KT, BECOMING NW AFTER MIDNIGHT.
GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT AT
5 SECONDS AND E 2 FT AT 6 SECONDS. SCATTERED SHOWERS. A CHANCE OF
TSTMS IN THE EVENING.
MON THROUGH TUE NIGHT
E WINDS 20 TO 25 KT WITH GUSTS UP TO
30 KT. SEAS 3 TO 5 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ256-152100-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND S 2 FT AT 7 SECONDS.
PATCHY FOG THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 2 FT AT 4 SECONDS AND S 2 FT AT 7 SECONDS. PATCHY FOG.
VSBY 1 NM OR LESS, INCREASING TO 1 TO 3 NM AFTER MIDNIGHT.
SAT
NE WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: NE 2 FT AT 4 SECONDS AND SE 1 FOOT AT
7 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 10 SECONDS AND SE 1 FOOT AT 5 SECONDS.
SUN
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 2 FT AT
10 SECONDS.
SUN NIGHT
SW WINDS AROUND 15 KT, BECOMING N AFTER MIDNIGHT.
GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. WAVE DETAIL: W 3 FT AT
5 SECONDS AND E 2 FT AT 6 SECONDS. SCATTERED SHOWERS. A CHANCE OF
TSTMS IN THE EVENING.
MON THROUGH TUE NIGHT
E WINDS 20 TO 25 KT WITH GUSTS UP TO
30 KT. SEAS 3 TO 5 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ232-152100-
NANTUCKET SOUND-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND SW 1 FOOT AT
5 SECONDS. PATCHY FOG THIS MORNING WITH VSBY 1 NM OR LESS.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: NE
2 FT AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS.
SAT
NE WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 5 SECONDS AND S 1 FOOT AT
6 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 1 FOOT AT 5 SECONDS AND SE 1 FOOT AT 9 SECONDS.
SUN
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
3 FT AT 4 SECONDS AND E 1 FOOT AT 5 SECONDS.
SUN NIGHT
SW WINDS 15 TO 20 KT, BECOMING N AFTER MIDNIGHT.
GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT
4 SECONDS AND E 2 FT AT 6 SECONDS. SCATTERED SHOWERS. A CHANCE OF
TSTMS IN THE EVENING.
MON THROUGH TUE NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ233-152100-
VINEYARD SOUND-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS 10 TO 15 KT. GUSTS UP TO 20 KT THIS MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: NE 1 FOOT AT 2 SECONDS AND W 1 FOOT
AT 4 SECONDS. PATCHY FOG THIS MORNING WITH VSBY 1 TO 3 NM.
TONIGHT
NE WINDS AROUND 10 KT, DIMINISHING TO AROUND 5 KT
AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT
4 SECONDS AND S 1 FOOT AT 6 SECONDS. PATCHY FOG IN THE EVENING
WITH VSBY 1 TO 3 NM.
SAT
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 2 SECONDS AND S 1 FOOT AT
7 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: SE 1 FOOT AT 4 SECONDS AND SE
1 FOOT AT 9 SECONDS, BECOMING SW 1 FOOT AT 3 SECONDS AND E 1 FOOT
AT 5 SECONDS.
SUN
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 4 SECONDS AND E 1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS
AND TSTMS IN THE AFTERNOON.
SUN NIGHT
SW WINDS 15 TO 20 KT, BECOMING N AFTER MIDNIGHT.
GUSTS UP TO 25 KT. SEAS 2 TO 4 FT. WAVE DETAIL: W 3 FT AT
5 SECONDS AND NE 2 FT AT 6 SECONDS. SCATTERED SHOWERS. A CHANCE
OF TSTMS IN THE EVENING.
MON THROUGH TUE NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ234-152100-
BUZZARDS BAY-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT
4 SECONDS. PATCHY FOG THIS MORNING WITH VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 4 SECONDS AND S 1 FOOT AT 6 SECONDS.
SAT
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: NE 1 FOOT AT 3 SECONDS AND S 1 FOOT
AT 5 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: SE 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT 9 SECONDS.
SUN
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 4 SECONDS AND E 1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS
AND TSTMS IN THE AFTERNOON.
SUN NIGHT
SW WINDS 15 TO 20 KT, BECOMING N 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 5 SECONDS. SCATTERED SHOWERS. A CHANCE OF
TSTMS IN THE EVENING.
MON THROUGH TUE NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ235-152100-
RHODE ISLAND SOUND-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: N 2 FT AT 3 SECONDS AND SW 1 FOOT AT
5 SECONDS. PATCHY FOG THIS MORNING WITH VSBY 1 TO 3 NM.
TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 2 FT AT 3 SECONDS AND S 2 FT AT 7 SECONDS. PATCHY FOG
IN THE EVENING WITH VSBY 1 NM OR LESS.
SAT
NE WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: NE 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT
7 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 8 SECONDS AND SE 1 FOOT AT 5 SECONDS.
SUN
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND
E 1 FOOT AT 4 SECONDS. A CHANCE OF SHOWERS AND TSTMS IN THE
AFTERNOON.
SUN NIGHT
SW WINDS 15 TO 20 KT, BECOMING N AFTER MIDNIGHT.
GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT
5 SECONDS AND NW 2 FT AT 4 SECONDS. SCATTERED SHOWERS. A CHANCE
OF TSTMS IN THE EVENING.
MON THROUGH TUE NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ237-152100-
BLOCK ISLAND SOUND-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: NE 2 FT AT 3 SECONDS AND S 1 FOOT AT
5 SECONDS.
TONIGHT
E WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE EVENING.
SEAS 2 TO 3 FT. WAVE DETAIL: E 2 FT AT 4 SECONDS AND SE 2 FT AT
8 SECONDS.
SAT
NE WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: E 1 FOOT AT 4 SECONDS AND SE 1 FOOT AT
7 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 1 FOOT AT 5 SECONDS AND SE 1 FOOT AT 8 SECONDS.
SUN
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 E 1 FOOT AT
4 SECONDS. A CHANCE OF SHOWERS AND TSTMS IN THE AFTERNOON.
SUN NIGHT
SW WINDS 10 TO 15 KT, BECOMING N AFTER MIDNIGHT.
GUSTS UP TO 25 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT
4 SECONDS AND NE 2 FT AT 6 SECONDS. SCATTERED SHOWERS. A CHANCE
OF TSTMS IN THE EVENING.
MON THROUGH TUE NIGHT
SE WINDS 15 TO 20 KT WITH GUSTS UP TO
25 KT. SEAS 2 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
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.
ANZ230-152100-
BOSTON HARBOR-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
AROUND 2 FT.
TONIGHT
E WINDS 5 TO 10 KT, BECOMING NE AFTER MIDNIGHT. WAVES
1 FOOT OR LESS.
SAT
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. WAVES
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON.
SAT NIGHT
S WINDS AROUND 10 KT. WAVES 1 FOOT OR LESS.
SUN
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
WAVES AROUND 2 FT. A CHANCE OF SHOWERS AND TSTMS IN THE
AFTERNOON.
SUN NIGHT
NW WINDS 10 TO 15 KT, BECOMING N AFTER MIDNIGHT.
GUSTS UP TO 20 KT. WAVES AROUND 2 FT. A CHANCE OF SHOWERS. A
CHANCE OF TSTMS IN THE EVENING.
MON THROUGH TUE NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. WAVES 2 TO 3 FT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
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.
ANZ236-152100-
NARRAGANSETT BAY-
406 AM EDT FRI AUG 15 2025
TODAY
NE WINDS AROUND 10 KT. GUSTS UP TO 20 KT THIS MORNING.
WAVES 2 TO 3 FT.
TONIGHT
NE WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SAT
NE WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. WAVES
AROUND 2 FT.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS.
SUN
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES 2 TO
3 FT. A CHANCE OF SHOWERS AND TSTMS IN THE AFTERNOON.
SUN NIGHT
W WINDS 10 TO 15 KT, BECOMING N AFTER MIDNIGHT.
GUSTS UP TO 20 KT. WAVES 2 TO 3 FT. SCATTERED SHOWERS. A CHANCE
OF TSTMS IN THE EVENING.
MON THROUGH TUE NIGHT
SE WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. WAVES 2 TO 3 FT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
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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