428  
FZNT31 KNHC 181945  
OFFN20  
 
MARINE WEATHER HF VOICE BROADCAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
345 PM EDT FRI APR 18 2025  
 
MARINE WEATHER HF VOICE BROADCAST FOR THE TROPICAL N ATLANTIC  
FROM 07N TO 19N W OF 55W, THE N ATLANTIC FROM 19N TO  
31N W OF 55W INCLUDING THE BAHAMAS, AND THE CARIBBEAN SEA.  
 
SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE AVERAGE  
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE  
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
SYNOPSIS FOR CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM  
07N TO 19N W OF 55W  
   
SYNOPSIS  
STRONG HIGH PRESSURE NORTH OF THE BASIN WILL SUPPORT  
FRESH TO STRONG NE WINDS ACROSS THE CENTRAL AND WESTERN  
CARIBBEAN THROUGH EARLY NEXT WEEK BEFORE DIMINISHING THROUGH  
MIDWEEK. NEAR- GALE FORCE WINDS WILL PULSE OFF COLOMBIA DURING  
THE OVERNIGHT HOURS, ACCOMPANIED BY ROUGH SEAS. LARGE NORTHERLY  
SWELL WILL IMPACT THE MONA AND ANEGADA PASSAGES BY SUN.  
 
NW CARIBBEAN W OF 85W  
   
TONIGHT  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
SAT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SAT NIGHT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SUN  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SUN NIGHT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
MON  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
TUE  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
TUE NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
WED  
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.    
WED NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.  
 
CARIBBEAN N OF 15N BETWEEN 72W AND 85W  
   
TONIGHT  
NE WINDS 10 TO 20 KT S OF 18N, AND E 15 TO 25 KT  
ELSEWHERE. SEAS 5 TO 7 FT.    
SAT  
E WINDS 10 TO 20 KT S OF 18N, AND E 15 TO 25 KT  
ELSEWHERE. SEAS 5 TO 7 FT.    
SAT NIGHT  
E WINDS 10 TO 20 KT S OF 18N, AND E 15 TO 25 KT  
ELSEWHERE. SEAS 5 TO 7 FT.    
SUN  
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
SUN NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
TUE  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
TUE NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
WED  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
WED NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.  
 
CARIBBEAN FROM 11N TO 15N W OF 72W  
   
TONIGHT  
NE WINDS 20 TO 25 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND NE 10 TO 20 KT ELSEWHERE. SEAS 6 TO 9 FT.    
SAT  
E WINDS 20 TO 25 KT WITHIN 90 NM OF COAST OF COLOMBIA,  
AND NE 10 TO 20 KT ELSEWHERE. SEAS 6 TO 9 FT.    
SAT NIGHT  
E WINDS 20 TO 30 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND NE 15 TO 25 KT ELSEWHERE. SEAS 7 TO 10 FT.    
SUN  
E WINDS 20 TO 25 KT WITHIN 90 NM OF COAST OF COLOMBIA,  
AND NE 15 TO 25 KT ELSEWHERE. SEAS 7 TO 10 FT.    
SUN NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
MON  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
TUE  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TUE NIGHT  
NE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
WED  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
WED NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
SW CARIBBEAN S OF 11N  
   
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
SAT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
SAT NIGHT  
NE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
SUN  
NE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
SUN NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
MON  
NE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
TUE  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
TUE NIGHT  
NE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
WED  
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
WED NIGHT  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
CARIBBEAN BETWEEN 64W AND 72W  
   
TONIGHT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SAT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SAT NIGHT  
E WINDS 20 TO 25 KT GULF OF VENEZUELA, AND NE 10 TO  
20 KT ELSEWHERE. SEAS 5 TO 7 FT.    
SUN  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SUN NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
MON  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
TUE  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
TUE NIGHT  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
WED  
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
WED NIGHT  
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.  
 
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO  
19N W OF 55W  
   
TONIGHT  
E WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT  
AFTER MIDNIGHT. SEAS 4 TO 6 FT.    
SAT  
E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 4 TO 6 FT.    
SAT NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN NIGHT  
E WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT  
AFTER MIDNIGHT. SEAS 5 TO 7 FT.    
MON  
E WINDS 10 TO 15 KT, SHIFTING TO W IN THE AFTERNOON. SEAS  
5 TO 7 FT.    
MON NIGHT  
E WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.   
TUE  
SE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.   
TUE NIGHT  
E WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
WED  
SE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
WED NIGHT  
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.  
 
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO  
15N W OF 55W  
   
TONIGHT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SAT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SAT NIGHT  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SUN  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SUN NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
MON  
E WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
MON NIGHT  
E WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.   
TUE  
E WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
TUE NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
WED  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
WED NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS  
   
SYNOPSIS  
A SURFACE TROUGH EXTENDS FROM 31N59W TO NEAR PUERTO  
RICO. A TIGHT PRESSURE GRADIENT BETWEEN THIS TROUGH AND HIGH  
PRESSURE OVER THE WESTERN ATLANTIC WILL SUPPORT FRESH TO STRONG  
NE TO E WINDS AND ROUGH SEAS THROUGH THIS WEEKEND FROM THE  
BAHAMAS TO THE GREATER ANTILLES. WINDS AND SEAS WILL SLOWLY  
DIMINISH WEST OF 65W EARLY NEXT WEEK. A COMPLEX LOW PRESSURE  
SYSTEM MAY DEVELOP IN THE CENTRAL ATLANTIC THIS WEEKEND,  
PRODUCING FRESH TO STRONG NE WINDS AND ROUGH SEAS IN THE  
VICINITY OF THE LOW, EAST OF 65W.  
 
ATLC WATERS FROM 27N TO 31N W OF 77W  
   
TONIGHT  
E WINDS 15 KT. SEAS 4 TO 6 FT.    
SAT  
SE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SAT NIGHT  
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN  
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.    
MON  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
MON NIGHT  
SE WINDS 10 KT. SEAS 3 TO 5 FT.    
TUE  
SE WINDS 10 KT. SEAS 3 TO 4 FT.    
TUE NIGHT  
SE WINDS 10 KT. SEAS 3 TO 5 FT.    
WED  
SE WINDS 10 KT. SEAS 3 TO 5 FT.    
WED NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.  
 
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W  
   
TONIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
SAT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT W OF 70W, AND 7 TO  
10 FT ELSEWHERE.    
SAT NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
SUN  
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SUN NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
MON  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TUE  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TUE NIGHT  
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
WED  
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
WED NIGHT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.  
 
BAHAMAS N OF 22N  
   
TONIGHT  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
SAT  
E WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.    
SAT NIGHT  
E WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.    
SUN  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SUN NIGHT  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
MON  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.    
TUE  
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.    
TUE NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
WED  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
WED NIGHT  
NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.  
 
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS  
   
TONIGHT  
NE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.    
SAT  
NE WINDS 15 TO 25 KT. SEAS 8 TO 10 FT.    
SAT NIGHT  
NE WINDS 15 TO 25 KT. SEAS 8 TO 10 FT.    
SUN  
NE WINDS 15 TO 20 KT. SEAS 7 TO 10 FT.    
SUN NIGHT  
NE WINDS 15 TO 20 KT. SEAS 7 TO 9 FT.    
MON  
NE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
TUE  
NE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
TUE NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
WED  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
WED NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.  
 
ATLC WATERS S OF 22N W OF 65W  
   
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SAT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
SAT NIGHT  
NE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.    
SUN  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
SUN NIGHT  
NE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.    
MON  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
TUE  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
TUE NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
WED  
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
WED NIGHT  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.  
 
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W  
   
TONIGHT  
E WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
SAT  
E WINDS 10 KT. SEAS 4 TO 6 FT.    
SAT NIGHT  
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SUN  
E WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
SUN NIGHT  
NE WINDS 10 TO 15 KT. SEAS 7 TO 8 FT.    
MON  
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 7 TO 8 FT.    
MON NIGHT  
E WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.   
TUE  
SE WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.   
TUE NIGHT  
SE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.    
WED  
SE WINDS 10 KT. SEAS 5 TO 6 FT.    
WED NIGHT  
E WINDS 10 KT. SEAS 5 TO 6 FT.  
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