654  
WHCA72 TJSJ 231959  
MWWSJU  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE SAN JUAN PR  
359 PM AST THU APR 23 2026  
 
AMZ711-712-240400-  
/O.CON.TJSJ.SC.Y.0017.000000T0000Z-260424T0400Z/  
ATLANTIC WATERS OF PUERTO RICO AND USVI FROM 10 NM TO 19.5N-  
COASTAL WATERS OF NORTHERN PUERTO RICO OUT 10 NM-  
359 PM AST THU APR 23 2026  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT AST  
TONIGHT...  
 
* WHAT...SEAS 6 TO 7 FT.  
 
* WHERE...ATLANTIC WATERS OF PUERTO RICO AND USVI FROM 10 NM TO  
19.5N AND COASTAL WATERS OF NORTHERN PUERTO RICO OUT 10 NM.  
 
* WHEN...UNTIL MIDNIGHT AST TONIGHT.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
AMZ742-232200-  
/O.CON.TJSJ.SC.Y.0017.000000T0000Z-260423T2200Z/  
COASTAL WATERS OF NORTHWESTERN PUERTO RICO OUT 10 NM-  
359 PM AST THU APR 23 2026  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM AST THIS  
EVENING...  
 
* WHAT...SEAS 4 TO 7 FT.  
 
* WHERE...COASTAL WATERS OF NORTHWESTERN PUERTO RICO OUT 10 NM.  
 
* WHEN...UNTIL 6 PM AST 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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