902  
WHUS71 KBOX 211613  
MWWBOX  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE BOSTON/NORTON MA  
1213 PM EDT FRI AUG 21 2026  
 
ANZ235-237-256-212200-  
/O.NEW.KBOX.SC.Y.0079.260821T1613Z-260821T2200Z/  
RHODE ISLAND SOUND-BLOCK ISLAND SOUND-  
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT  
TO 20 NM SOUTH OF BLOCK ISLAND-  
1213 PM EDT FRI AUG 21 2026  
   
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING
 
 
* WHAT...NORTHEAST WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT AND  
SEAS AROUND 3 FEET.  
 
* WHERE...RHODE ISLAND SOUND, BLOCK ISLAND SOUND AND COASTAL  
WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT TO 20  
NM SOUTH OF BLOCK ISLAND.  
 
* WHEN...UNTIL 6 PM EDT THIS EVENING.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
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