699  
FZUS51 KBOX 030501  
CWFBOX  
 
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
101 AM EDT TUE OCT 3 2023  
 
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT  
TO 25 NM  
 
ANZ200-031800-  
101 AM EDT TUE OCT 3 2023  
   
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS  
 
HIGH PRES BUILDS WEST OF THE WATERS THIS EVENING AND TUE. THE HIGH  
WILL MOVE OVER THE WATERS WED BEFORE PUSHING FURTHER OFFSHORE ON  
THU. A FRONTAL SYSTEM BRINGS THE NEXT SHOT FOR RAIN SHOWERS LATE ON  
FRI INTO SAT.  
 
 
 
ANZ250-031800-  
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK  
NATIONAL MARINE SANCTUARY-  
101 AM EDT TUE OCT 3 2023  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING  
 
   
REST OF TONIGHT  
W WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.    
TUE  
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.    
TUE NIGHT  
SW WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT.  
SEAS 2 TO 3 FT.    
WED  
NE WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS  
2 TO 3 FT.    
WED NIGHT THROUGH THU NIGHT  
S WINDS 10 TO 15 KT WITH GUSTS UP  
TO 20 KT. SEAS 2 TO 3 FT.    
FRI  
S WINDS AROUND 10 KT. SEAS 2 TO 3 FT.    
FRI NIGHT  
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS  
2 TO 4 FT. A CHANCE OF SHOWERS.    
SAT  
SE WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO  
5 FT. SHOWERS LIKELY. VSBY 1 TO 3 NM.   
SAT NIGHT  
S WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS  
4 TO 7 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.  
 
 
 
ANZ251-031800-  
MASSACHUSETTS BAY AND IPSWICH BAY-  
101 AM EDT TUE OCT 3 2023  
   
REST OF TONIGHT  
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
TUE  
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
TUE NIGHT  
SW WINDS 5 TO 10 KT, BECOMING NW AFTER MIDNIGHT.  
SEAS 2 TO 3 FT.    
WED  
N WINDS 5 TO 10 KT, BECOMING E IN THE AFTERNOON. SEAS  
AROUND 2 FT.    
WED NIGHT THROUGH THU NIGHT  
S WINDS 10 TO 15 KT WITH GUSTS UP  
TO 20 KT. SEAS 2 TO 3 FT.    
FRI  
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
FRI NIGHT  
SE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. SEAS  
2 TO 3 FT. A CHANCE OF SHOWERS.    
SAT  
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO  
4 FT. SHOWERS LIKELY. VSBY 1 TO 3 NM.   
SAT NIGHT  
S WINDS AROUND 15 KT WITH GUSTS UP TO 25 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.  
 
 
 
ANZ231-031800-  
CAPE COD BAY-  
101 AM EDT TUE OCT 3 2023  
   
REST OF TONIGHT  
W WINDS AROUND 5 KT. SEAS AROUND 2 FT.   
TUE  
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
TUE NIGHT  
W WINDS AROUND 5 KT. SEAS AROUND 2 FT.    
WED  
N WINDS AROUND 5 KT, BECOMING E AROUND 5 KT IN THE  
AFTERNOON. SEAS AROUND 2 FT.    
WED NIGHT THROUGH THU NIGHT  
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR  
LESS.    
FRI  
SE WINDS AROUND 10 KT. SEAS AROUND 2 FT.    
FRI NIGHT  
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS  
AROUND 2 FT. A CHANCE OF SHOWERS.    
SAT AND SAT NIGHT  
S WINDS 10 TO 15 KT WITH GUSTS UP TO 25 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.  
 
 
 
ANZ254-031800-  
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA  
OUT 20 NM-  
101 AM EDT TUE OCT 3 2023  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING  
 
   
REST OF TONIGHT  
NW WINDS AROUND 5 KT. SEAS 3 TO 4 FT.    
TUE  
W WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.    
TUE NIGHT  
W WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.    
WED  
W WINDS AROUND 5 KT, BECOMING SE AROUND 5 KT IN THE  
AFTERNOON. SEAS 2 TO 3 FT.    
WED NIGHT THROUGH THU NIGHT  
SE WINDS 5 TO 10 KT. SEAS 2 TO  
3 FT.    
FRI  
SE WINDS AROUND 10 KT. SEAS 3 TO 4 FT.    
FRI NIGHT  
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS  
3 TO 5 FT. A CHANCE OF SHOWERS.    
SAT AND SAT NIGHT  
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.  
SEAS 4 TO 7 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.  
 
 
 
ANZ255-031800-  
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD  
AND NANTUCKET-  
101 AM EDT TUE OCT 3 2023  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING  
 
   
REST OF TONIGHT  
N WINDS AROUND 5 KT. SEAS 2 TO 4 FT.    
TUE  
W WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.    
TUE NIGHT  
W WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.    
WED  
W WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS  
2 TO 3 FT.    
WED NIGHT THROUGH THU NIGHT  
SE WINDS 5 TO 10 KT. SEAS 2 TO  
3 FT.    
FRI  
SE WINDS AROUND 10 KT. SEAS 2 TO 4 FT.    
FRI NIGHT  
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS  
3 TO 5 FT. A CHANCE OF SHOWERS.    
SAT AND SAT NIGHT  
S WINDS AROUND 15 KT WITH GUSTS UP TO 25 KT.  
SEAS 4 TO 7 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.  
 
 
 
ANZ256-031800-  
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT  
TO 20 NM SOUTH OF BLOCK ISLAND-  
101 AM EDT TUE OCT 3 2023  
   
REST OF TONIGHT  
N WINDS AROUND 5 KT. SEAS 2 TO 3 FT.    
TUE  
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
TUE NIGHT  
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.   
WED  
W WINDS AROUND 5 KT. SEAS 2 TO 3 FT.    
WED NIGHT THROUGH THU NIGHT  
SE WINDS 5 TO 10 KT. SEAS 2 TO  
3 FT.    
FRI  
SE WINDS AROUND 10 KT. SEAS 3 TO 4 FT.    
FRI NIGHT  
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS  
3 TO 5 FT. A CHANCE OF SHOWERS.    
SAT AND SAT NIGHT  
SE WINDS 10 TO 15 KT, BECOMING SW. GUSTS UP  
TO 25 KT. SEAS 4 TO 7 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.  
 
 
 
ANZ232-031800-  
NANTUCKET SOUND-  
101 AM EDT TUE OCT 3 2023  
   
REST OF TONIGHT  
NW WINDS AROUND 5 KT. SEAS AROUND 2 FT.    
TUE  
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
TUE NIGHT  
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
WED  
NW WINDS AROUND 5 KT, BECOMING S AROUND 5 KT IN THE  
AFTERNOON. SEAS AROUND 2 FT.    
WED NIGHT THROUGH THU NIGHT  
SE WINDS 5 TO 10 KT. SEAS AROUND  
2 FT.    
FRI  
SE WINDS AROUND 10 KT. SEAS AROUND 2 FT.    
FRI NIGHT  
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS  
2 TO 3 FT. A CHANCE OF SHOWERS.    
SAT AND SAT NIGHT  
S WINDS AROUND 15 KT WITH GUSTS UP TO 25 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.  
 
 
 
ANZ233-031800-  
VINEYARD SOUND-  
101 AM EDT TUE OCT 3 2023  
   
REST OF TONIGHT  
NW WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS.    
TUE  
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
TUE NIGHT  
SW WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS  
AROUND 2 FT.    
WED  
NW WINDS AROUND 5 KT, BECOMING S AROUND 5 KT IN THE  
AFTERNOON. SEAS 1 FOOT OR LESS. PATCHY FOG. VSBY 1 NM OR LESS.    
WED NIGHT THROUGH THU NIGHT  
SE WINDS 5 TO 10 KT. SEAS 1 FOOT  
OR LESS.    
FRI  
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
FRI NIGHT  
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS  
2 TO 3 FT. A CHANCE OF SHOWERS.    
SAT AND SAT NIGHT  
SE WINDS AROUND 15 KT, BECOMING S. GUSTS UP  
TO 25 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.  
 
 
 
ANZ234-031800-  
BUZZARDS BAY-  
101 AM EDT TUE OCT 3 2023  
   
REST OF TONIGHT  
NW WINDS AROUND 5 KT. SEAS 1 FOOT OR LESS.    
TUE  
W WINDS AROUND 5 KT, BECOMING SW IN THE AFTERNOON. SEAS  
1 FOOT OR LESS.    
TUE NIGHT  
SW WINDS 5 TO 10 KT, BECOMING W AFTER MIDNIGHT. SEAS  
1 FOOT OR LESS.    
WED  
N WINDS AROUND 5 KT, BECOMING S AROUND 5 KT IN THE  
AFTERNOON. SEAS 1 FOOT OR LESS.    
WED NIGHT THROUGH THU NIGHT  
SE WINDS 5 TO 10 KT. SEAS 1 FOOT  
OR LESS.    
FRI  
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
FRI NIGHT  
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS  
AROUND 2 FT. A CHANCE OF SHOWERS.    
SAT AND SAT NIGHT  
SE WINDS AROUND 15 KT, BECOMING S. GUSTS UP  
TO 25 KT. SEAS 2 TO 3 FT. SHOWERS LIKELY. VSBY 1 TO 3 NM.  
 
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.  
 
 
 
ANZ235-031800-  
RHODE ISLAND SOUND-  
101 AM EDT TUE OCT 3 2023  
   
REST OF TONIGHT  
NW WINDS AROUND 5 KT. SEAS AROUND 2 FT.    
TUE  
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
TUE NIGHT  
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. PATCHY DENSE  
FOG. VSBY 1 NM OR LESS.    
WED  
NW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS  
AROUND 2 FT. PATCHY FOG. VSBY 1 NM OR LESS.    
WED NIGHT THROUGH THU NIGHT  
SE WINDS 5 TO 10 KT. SEAS AROUND  
2 FT.    
FRI  
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
FRI NIGHT  
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS  
2 TO 4 FT. A CHANCE OF SHOWERS.    
SAT AND SAT NIGHT  
SE WINDS 10 TO 15 KT, BECOMING SW. GUSTS UP  
TO 25 KT. SEAS 3 TO 5 FT. SHOWERS LIKELY. VSBY 1 TO 3 NM.  
 
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.  
 
 
 
ANZ237-031800-  
BLOCK ISLAND SOUND-  
101 AM EDT TUE OCT 3 2023  
   
REST OF TONIGHT  
NW WINDS AROUND 5 KT. SEAS AROUND 2 FT.    
TUE  
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT.    
TUE NIGHT  
W WINDS AROUND 5 KT. SEAS AROUND 2 FT. PATCHY DENSE  
FOG. VSBY 1 NM OR LESS.    
WED  
NW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS  
AROUND 2 FT. PATCHY DENSE FOG. VSBY 1 NM OR LESS.    
WED NIGHT THROUGH THU NIGHT  
SE WINDS 5 TO 10 KT. SEAS AROUND  
2 FT.    
FRI  
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.    
FRI NIGHT  
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS  
2 TO 4 FT. A CHANCE OF SHOWERS.    
SAT AND SAT NIGHT  
SE WINDS 10 TO 15 KT, BECOMING SW. GUSTS UP  
TO 25 KT. SEAS 3 TO 5 FT. SHOWERS LIKELY. VSBY 1 TO 3 NM.  
 
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.  
 
 
 
ANZ230-031800-  
BOSTON HARBOR-  
101 AM EDT TUE OCT 3 2023  
   
REST OF TONIGHT  
W WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.    
TUE  
SW WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.    
TUE NIGHT  
W WINDS AROUND 5 KT, BECOMING NW AROUND 5 KT AFTER  
MIDNIGHT. WAVES 1 FOOT OR LESS.    
WED  
N WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. WAVES  
1 FOOT OR LESS.    
WED NIGHT THROUGH THU NIGHT  
S WINDS 10 TO 15 KT. WAVES AROUND  
2 FT.    
FRI  
S WINDS 5 TO 10 KT.    
FRI NIGHT  
SE WINDS AROUND 10 KT. A CHANCE OF SHOWERS.    
SAT AND SAT NIGHT  
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.  
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.  
 
 
 
ANZ236-031800-  
NARRAGANSETT BAY-  
101 AM EDT TUE OCT 3 2023  
   
REST OF TONIGHT  
NW WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.    
TUE  
SW WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.    
TUE NIGHT  
W WINDS AROUND 5 KT. WAVES 1 FOOT OR LESS.   
WED  
N WINDS AROUND 5 KT, BECOMING S AROUND 5 KT IN THE  
AFTERNOON. WAVES 1 FOOT OR LESS.    
WED NIGHT THROUGH THU NIGHT  
SE WINDS 5 TO 10 KT. WAVES AROUND  
2 FT.    
FRI  
SE WINDS 5 TO 10 KT.    
FRI NIGHT  
SE WINDS AROUND 10 KT WITH GUSTS UP TO 20 KT. A  
CHANCE OF SHOWERS.    
SAT AND SAT NIGHT  
SE WINDS 10 TO 15 KT, BECOMING SW. GUSTS UP  
TO 20 KT. SHOWERS LIKELY. VSBY 1 TO 3 NM.  
 
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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