613  
WHCA72 TJSJ 222035  
MWWSJU  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE SAN JUAN PR  
435 PM AST WED APR 22 2026  
 
AMZ711-230445-  
/O.EXT.TJSJ.SC.Y.0017.260423T0400Z-260423T2200Z/  
ATLANTIC WATERS OF PUERTO RICO AND USVI FROM 10 NM TO 19.5N-  
435 PM AST WED APR 22 2026  
 
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO  
6 PM AST THURSDAY...  
 
* WHAT...SEAS 5 TO 7 FT EXPECTED.  
 
* WHERE...ATLANTIC WATERS OF PUERTO RICO AND USVI FROM 10 NM TO  
19.5N.  
 
* WHEN...FROM MIDNIGHT TONIGHT TO 6 PM AST THURSDAY.  
 
* 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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