648
FZUS51 KBOX 170509
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
109 AM EDT TUE MAR 17 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 25 NM
ANZ200-171800-
109 AM EDT TUE MAR 17 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
STRONG LOW PRES WILL PRES WILL CONTINUE TO INTENSIFY TONIGHT AS IT
LIFTS NORTHEAST THROUGH QUEBEC. THIS WILL DRAG A STRONG COLD FRONT
ACROSS SOUTHERN NEW ENG AND THE COASTAL WATERS VERY LATE TONIGHT.
THE STRONG LOW PRES WILL MOVE N THROUGH EASTERN CANADA ON TUE. HIGH
PRES BUILDS OVER THE WATERS WED INTO THU, MOVING OFFSHORE FRI AS A
COLD FRONT APPROACHES FROM THE WEST.
ANZ250-171800-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
S WINDS 30 TO 35 KT WITH GUSTS UP TO 50 KT.
SEAS 10 TO 14 FT. WAVE DETAIL: S 13 FT AT 9 SECONDS AND SE 10 FT
AT 9 SECONDS. RAIN WITH ISOLATED TSTMS.
TUE
W WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT, DIMINISHING TO
20 TO 25 KT WITH GUSTS UP TO 30 KT IN THE AFTERNOON. SEAS 8 TO
11 FT, SUBSIDING TO 6 TO 9 FT IN THE AFTERNOON. WAVE DETAIL: SE
10 FT AT 10 SECONDS AND S 7 FT AT 10 SECONDS, BECOMING SE 8 FT AT
11 SECONDS AND W 4 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
6 TO 9 FT. WAVE DETAIL: SE 8 FT AT 11 SECONDS AND W 6 FT AT
5 SECONDS.
WED
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. SEAS 5 TO 7 FT. WAVE DETAIL: SE 6 FT
AT 11 SECONDS AND W 5 FT AT 5 SECONDS.
WED NIGHT AND THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND S 3 FT AT
4 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE 3 FT AT
9 SECONDS.
FRI
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 3 TO
4 FT.
FRI NIGHT THROUGH SAT NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 KT. SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
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.
ANZ251-171800-
MASSACHUSETTS BAY AND IPSWICH BAY-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
S WINDS 25 TO 35 KT WITH GUSTS UP TO 55 KT.
SEAS 6 TO 9 FT. WAVE DETAIL: SE 9 FT AT 9 SECONDS AND S 3 FT AT
5 SECONDS. RAIN WITH ISOLATED TSTMS.
TUE
W WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS 5 TO
7 FT. WAVE DETAIL: S 6 FT AT 8 SECONDS AND SE 6 FT AT 9 SECONDS.
TUE NIGHT
W WINDS 20 TO 25 KT. SEAS 4 TO 6 FT. WAVE DETAIL: W
4 FT AT 4 SECONDS AND E 4 FT AT 12 SECONDS.
WED
W WINDS 15 TO 20 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: W 4 FT AT 4 SECONDS AND E
3 FT AT 11 SECONDS.
WED NIGHT AND THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND E 3 FT AT
10 SECONDS.
THU NIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT AT 4 SECONDS AND SE
2 FT AT 9 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 15 TO 20 KT. SEAS 2 TO
4 FT. A CHANCE OF SHOWERS.
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.
ANZ231-171800-
CAPE COD BAY-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
S WINDS 30 TO 40 KT WITH GUSTS UP TO 50 KT.
SEAS 5 TO 7 FT. WAVE DETAIL: S 7 FT AT 9 SECONDS AND S 6 FT AT
5 SECONDS. RAIN WITH ISOLATED TSTMS.
TUE
SW WINDS 25 TO 30 KT, BECOMING W 15 TO 20 KT IN THE
AFTERNOON. SEAS 4 TO 6 FT, SUBSIDING TO 3 TO 4 FT IN THE
AFTERNOON. WAVE DETAIL: S 6 FT AT 10 SECONDS AND SW 5 FT AT
5 SECONDS, BECOMING S 4 FT AT 11 SECONDS AND SE 4 FT AT
11 SECONDS. A CHANCE OF RAIN IN THE MORNING.
TUE NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
2 TO 4 FT. WAVE DETAIL: S 4 FT AT 10 SECONDS AND SE 4 FT AT
11 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: W 3 FT
AT 5 SECONDS AND SE 3 FT AT 11 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N 2 FT AT 5 SECONDS AND S
2 FT AT 10 SECONDS.
FRI
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 9 SECONDS AND W 1 FOOT AT 3 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
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.
ANZ254-171800-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
S WINDS 30 TO 35 KT WITH GUSTS UP TO 50 KT.
SEAS 11 TO 15 FT. WAVE DETAIL: S 15 FT AT 10 SECONDS AND S 3 FT
AT 5 SECONDS. RAIN WITH ISOLATED TSTMS.
TUE
SW WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT, BECOMING W
20 TO 25 KT WITH GUSTS UP TO 30 KT IN THE AFTERNOON. SEAS 10 TO
14 FT, SUBSIDING TO 8 TO 11 FT IN THE AFTERNOON. WAVE DETAIL: S
14 FT AT 11 SECONDS AND SE 7 FT AT 10 SECONDS, BECOMING S 11 FT
AT 11 SECONDS AND SE 9 FT AT 11 SECONDS. PATCHY FOG IN THE
MORNING. A CHANCE OF RAIN IN THE MORNING WITH VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. WAVE DETAIL:
SE 8 FT AT 11 SECONDS AND S 8 FT AT 11 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 8 FT. WAVE DETAIL: SE 6 FT
AT 11 SECONDS AND S 5 FT AT 10 SECONDS.
WED NIGHT
S WINDS AROUND 5 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SE
5 FT AT 10 SECONDS AND NW 2 FT AT 6 SECONDS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: SE 4 FT AT 10 SECONDS AND N 1 FOOT AT 5 SECONDS.
FRI
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT.
FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. A CHANCE OF SHOWERS.
SAT AND SAT NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
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.
ANZ255-171800-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
S WINDS 30 TO 40 KT WITH GUSTS UP TO 50 KT.
SEAS 12 TO 17 FT. WAVE DETAIL: S 17 FT AT 10 SECONDS AND S 2 FT
AT 5 SECONDS. RAIN WITH ISOLATED TSTMS.
TUE
W WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 10 TO
14 FT, SUBSIDING TO 9 TO 12 FT IN THE AFTERNOON. WAVE DETAIL: S
14 FT AT 11 SECONDS AND SE 8 FT AT 11 SECONDS, BECOMING SW 10 FT
AT 11 SECONDS AND SE 8 FT AT 11 SECONDS. PATCHY FOG IN THE
MORNING. A CHANCE OF RAIN IN THE MORNING WITH VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
9 TO 12 FT, SUBSIDING TO 7 TO 10 FT AFTER MIDNIGHT. WAVE DETAIL:
SW 9 FT AT 11 SECONDS AND SE 7 FT AT 11 SECONDS, BECOMING SW 9 FT
AT 10 SECONDS AND SE 7 FT AT 12 SECONDS.
WED
NW WINDS 15 TO 20 KT, BECOMING W 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 W 3 FT AT
6 SECONDS, BECOMING S 6 FT AT 10 SECONDS AND W 3 FT AT 6 SECONDS.
WED NIGHT AND THU
S WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: S 5 FT AT 10 SECONDS AND W 2 FT AT 6 SECONDS.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
3 FT AT 9 SECONDS AND SE 2 FT AT 9 SECONDS.
FRI
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT.
FRI NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. A CHANCE OF SHOWERS.
SAT AND SAT NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
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.
ANZ256-171800-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
SW WINDS 30 TO 40 KT WITH GUSTS UP TO 50 KT.
SEAS 15 TO 18 FT. WAVE DETAIL: S 18 FT AT 10 SECONDS AND SE 2 FT
AT 10 SECONDS. RAIN WITH ISOLATED TSTMS.
TUE
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 11 TO 15 FT, SUBSIDING TO 10 TO 12 FT IN THE
AFTERNOON. WAVE DETAIL: S 15 FT AT 11 SECONDS AND SE 8 FT AT
11 SECONDS, BECOMING SW 10 FT AT 11 SECONDS AND SE 8 FT AT
11 SECONDS.
TUE NIGHT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS
8 TO 11 FT, SUBSIDING TO 7 TO 9 FT AFTER MIDNIGHT. WAVE DETAIL:
SW 9 FT AT 10 SECONDS AND SE 7 FT AT 11 SECONDS, BECOMING SW 8 FT
AT 10 SECONDS AND SE 6 FT AT 11 SECONDS.
WED
NW WINDS 15 TO 20 KT, BECOMING W 5 TO 10 KT IN THE
AFTERNOON. SEAS 5 TO 8 FT, SUBSIDING TO 5 TO 6 FT IN THE
AFTERNOON. WAVE DETAIL: S 6 FT AT 10 SECONDS AND SE 5 FT AT
11 SECONDS, BECOMING S 6 FT AT 10 SECONDS AND SE 3 FT AT
11 SECONDS.
WED NIGHT AND THU
S WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE
DETAIL: S 5 FT AT 10 SECONDS AND SE 3 FT AT 10 SECONDS.
THU NIGHT
S WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
3 FT AT 9 SECONDS AND SE 3 FT AT 9 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP
TO 25 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
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.
ANZ232-171800-
NANTUCKET SOUND-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
S WINDS 30 TO 40 KT WITH GUSTS UP TO 50 KT.
SEAS 6 TO 9 FT. WAVE DETAIL: SE 6 FT AT 5 SECONDS AND S 6 FT AT
10 SECONDS. RAIN WITH ISOLATED TSTMS.
TUE
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. GUSTS UP TO 40 KT. SEAS 5 TO 7 FT. WAVE DETAIL: W 5 FT
AT 5 SECONDS AND S 4 FT AT 11 SECONDS. PATCHY FOG IN THE MORNING.
A CHANCE OF RAIN IN THE MORNING WITH VSBY 1 TO 3 NM.
TUE NIGHT
W WINDS 20 TO 25 KT, BECOMING NW 15 TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND SW
3 FT AT 10 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: NW 3 FT
AT 4 SECONDS AND S 2 FT AT 9 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
3 FT. WAVE DETAIL: E 2 FT AT 9 SECONDS AND S 2 FT AT 9 SECONDS.
FRI
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 8 SECONDS AND W 1 FOOT AT 3 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 15 TO 20 KT. SEAS 2 TO
4 FT. A CHANCE OF SHOWERS.
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.
ANZ233-171800-
VINEYARD SOUND-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
S WINDS 35 TO 45 KT WITH GUSTS UP TO 50 KT.
SEAS 9 TO 12 FT. WAVE DETAIL: S 10 FT AT 11 SECONDS AND SW 4 FT
AT 5 SECONDS. RAIN WITH ISOLATED TSTMS.
TUE
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 7 TO 10 FT, SUBSIDING TO 5 TO 8 FT IN THE
AFTERNOON. WAVE DETAIL: SW 9 FT AT 11 SECONDS AND SE 6 FT AT
10 SECONDS, BECOMING SW 6 FT AT 11 SECONDS AND SE 5 FT AT
11 SECONDS.
TUE NIGHT
W WINDS 20 TO 25 KT, BECOMING NW 15 TO 20 KT AFTER
MIDNIGHT. SEAS 5 TO 7 FT. WAVE DETAIL: SW 6 FT AT 10 SECONDS AND
SE 5 FT AT 11 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: SW 4 FT
AT 9 SECONDS AND SE 3 FT AT 11 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 3 FT AT 9 SECONDS AND SE 2 FT AT 10 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 3 SECONDS AND S 2 FT AT 8 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
S WINDS 15 TO 20 KT. SEAS 2 TO
4 FT. A CHANCE OF SHOWERS.
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.
ANZ234-171800-
BUZZARDS BAY-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
S WINDS 35 TO 45 KT WITH GUSTS UP TO 50 KT.
SEAS 6 TO 9 FT. WAVE DETAIL: SW 7 FT AT 11 SECONDS AND SW 6 FT AT
5 SECONDS. RAIN WITH ISOLATED TSTMS.
TUE
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. GUSTS UP TO 40 KT. SEAS 5 TO 7 FT. WAVE DETAIL: SW
7 FT AT 11 SECONDS AND W 5 FT AT 5 SECONDS.
TUE NIGHT
W WINDS 20 TO 25 KT, BECOMING NW 15 TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SW 5 FT AT 10 SECONDS AND
SE 4 FT AT 11 SECONDS.
WED
NW WINDS 10 TO 15 KT, BECOMING SW 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 9 SECONDS AND
SE 3 FT AT 11 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND
2 FT. WAVE DETAIL: S 2 FT AT 9 SECONDS AND SE 2 FT AT 10 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: W
2 FT AT 3 SECONDS AND S 2 FT AT 8 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 15 TO 20 KT. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
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.
ANZ235-171800-
RHODE ISLAND SOUND-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
S WINDS 30 TO 40 KT WITH GUSTS UP TO 50 KT.
SEAS 12 TO 16 FT. WAVE DETAIL: S 16 FT AT 10 SECONDS AND SE 4 FT
AT 10 SECONDS. RAIN WITH ISOLATED TSTMS.
TUE
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT IN THE
AFTERNOON. SEAS 9 TO 13 FT, SUBSIDING TO 7 TO 10 FT IN THE
AFTERNOON. WAVE DETAIL: S 13 FT AT 11 SECONDS AND SE 7 FT AT
11 SECONDS, BECOMING S 10 FT AT 11 SECONDS AND SE 7 FT AT
11 SECONDS.
TUE NIGHT
W WINDS 20 TO 25 KT, BECOMING NW 15 TO 20 KT AFTER
MIDNIGHT. SEAS 6 TO 9 FT. WAVE DETAIL: SW 8 FT AT 10 SECONDS AND
SE 7 FT AT 11 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: S 6 FT
AT 10 SECONDS AND SE 5 FT AT 11 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO
4 FT. WAVE DETAIL: S 4 FT AT 10 SECONDS AND SE 3 FT AT
10 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 9 SECONDS AND SW 2 FT AT 3 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
S WINDS 15 TO 20 KT. SEAS 3 TO
5 FT. A CHANCE OF SHOWERS.
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.
ANZ237-171800-
BLOCK ISLAND SOUND-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
REST OF TONIGHT
SW WINDS 25 TO 35 KT WITH GUSTS UP TO 50 KT.
SEAS 11 TO 15 FT. WAVE DETAIL: S 15 FT AT 10 SECONDS AND SE 4 FT
AT 10 SECONDS. RAIN WITH ISOLATED TSTMS.
TUE
W WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS 9 TO
12 FT, SUBSIDING TO 7 TO 10 FT IN THE AFTERNOON. WAVE DETAIL: S
12 FT AT 11 SECONDS AND SE 8 FT AT 11 SECONDS, BECOMING SE 7 FT
AT 11 SECONDS AND S 7 FT AT 11 SECONDS.
TUE NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
6 TO 9 FT, SUBSIDING TO 5 TO 7 FT AFTER MIDNIGHT. WAVE DETAIL: SE
7 FT AT 11 SECONDS AND S 6 FT AT 10 SECONDS, BECOMING SE 6 FT AT
11 SECONDS AND S 5 FT AT 10 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: S 5 FT
AT 10 SECONDS AND SE 4 FT AT 11 SECONDS.
WED NIGHT THROUGH THU NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO
4 FT. WAVE DETAIL: S 4 FT AT 9 SECONDS AND SE 3 FT AT 10 SECONDS.
FRI
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.
FRI NIGHT THROUGH SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
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.
ANZ230-171800-
BOSTON HARBOR-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 5 AM EDT EARLY THIS MORNING
REST OF TONIGHT
S WINDS 25 TO 35 KT WITH GUSTS UP TO 55 KT.
WAVES AROUND 2 FT, EXCEPT 3 TO 5 FT AT THE OUTER HARBOR ENTRANCE.
RAIN WITH ISOLATED TSTMS.
TUE
W WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 30 KT. WAVES AROUND 2 FT, EXCEPT 3 TO 5 FT
AT THE OUTER HARBOR ENTRANCE.
TUE NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES
AROUND 2 FT.
WED
W WINDS 15 TO 20 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. WAVES AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS.
WED NIGHT AND THU
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
THU NIGHT
SW WINDS 10 TO 15 KT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS.
FRI
SW WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. WAVES AROUND 2 FT. A CHANCE OF SHOWERS.
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.
ANZ236-171800-
NARRAGANSETT BAY-
109 AM EDT TUE MAR 17 2026
..STORM WARNING IN EFFECT UNTIL 5 AM EDT EARLY THIS MORNING
REST OF TONIGHT
S WINDS 25 TO 35 KT WITH GUSTS UP TO 55 KT.
WAVES 6 TO 9 FT, EXCEPT 9 TO 12 FT AT THE BAY ENTRANCE. RAIN WITH
ISOLATED TSTMS.
TUE
W WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT IN THE
AFTERNOON. GUSTS UP TO 35 KT. WAVES 5 TO 7 FT. AT THE BAY
ENTRANCE, WAVES 7 TO 10 FT, SUBSIDING TO 6 TO 8 FT IN THE
AFTERNOON.
TUE NIGHT
W WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT
AFTER MIDNIGHT. GUSTS UP TO 25 KT. WAVES 3 TO 5 FT, SUBSIDING TO
2 TO 3 FT AFTER MIDNIGHT. AT THE BAY ENTRANCE, WAVES 4 TO 6 FT.
WED
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. WAVES
2 TO 3 FT.
WED NIGHT THROUGH THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. WAVES 2 TO 3 FT.
FRI
SW WINDS 5 TO 10 KT. WAVES 2 TO 3 FT.
FRI NIGHT THROUGH SAT NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
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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