424  
FZNT31 KNHC 210900  
OFFN20  
 
MARINE WEATHER HF VOICE BROADCAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
400 AM EST THU NOV 21 2024  
 
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  
A COLD FRONT SWEEPING ACROSS THE GULF OF MEXICO  
EXTENDS FROM THE UPPER FLORIDA KEYS ACROSS FAR W CUBA AND INTO  
THE NW CARIBBEAN EARLY THIS MORNING. THE FRONT WILL REACH FROM  
CENTRAL CUBA ALONG 80W TO THE GULF OF HONDURAS BY AROUND  
SUNRISE, REACH FROM EASTERN CUBA TO NEAR CABO GRACIAS A DIOS,  
NICARAGUA BY FRI MORNING, AND FROM THE WINDWARD PASSAGE TO NEAR  
THE COSTA RICA- PANAMA BORDER SAT MORNING, WHERE THE FRONT  
SHOULD STALL AND GRADUALLY DISSIPATE. FRESH TO STRONG N WINDS  
AND BUILDING SEAS WILL FOLLOW THE FRONT THROUGH SAT BEFORE WINDS  
BEGIN TO VEER NE TO E THROUGH SUN AND DIMINISH SLIGHTLY.  
 
NW CARIBBEAN W OF 85W  
   
TODAY  
N WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
TONIGHT  
N WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
FRI  
N WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
FRI NIGHT  
N WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SAT  
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 5 TO 7 FT.    
SAT NIGHT  
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN  
10 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT.    
SUN  
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SUN NIGHT  
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
MON  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
MON NIGHT  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
CARIBBEAN N OF 15N BETWEEN 72W AND 85W  
   
TODAY  
NE WINDS LESS THAN 10 KT S OF 18N, AND N 10 TO 15 KT  
ELSEWHERE. SEAS 3 TO 4 FT.    
TONIGHT  
S OF 18N, N WINDS LESS THAN 10 KT, INCREASING TO  
10 TO 15 KT AFTER MIDNIGHT. ELSEWHERE, N WINDS 10 TO 20 KT. SEAS  
3 TO 5 FT.    
FRI  
N WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
FRI NIGHT  
N WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
SAT  
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
SAT NIGHT  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN  
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 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.  
 
CARIBBEAN FROM 11N TO 15N W OF 72W  
   
TODAY  
NE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
TONIGHT  
NE WINDS LESS THAN 10 KT. SEAS 3 FT.    
FRI  
VARIABLE WINDS LESS THAN 10 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND NE LESS THAN 10 KT ELSEWHERE. SEAS 3 TO 4 FT.    
FRI NIGHT  
WITHIN 90 NM OF COAST OF COLOMBIA, NE WINDS 10 KT  
IN THE EVENING, BECOMING VARIABLE WINDS LESS THAN 10 KT.  
ELSEWHERE, NE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS WITHIN 90 NM  
OF COAST OF COLOMBIA, AND 3 TO 5 FT ELSEWHERE.    
SAT  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT NIGHT  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN  
NE WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.    
SUN NIGHT  
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
MON  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.  
 
SW CARIBBEAN S OF 11N  
   
TODAY  
VARIABLE WINDS LESS THAN 10 KT, BECOMING W LESS THAN  
10 KT IN THE AFTERNOON. SEAS 3 FT.    
TONIGHT  
NW WINDS LESS THAN 10 KT IN THE EVENING, BECOMING  
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.    
FRI  
NW WINDS LESS THAN 10 KT. SEAS 3 FT.    
FRI NIGHT  
N WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
SAT  
N WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
SAT NIGHT  
N WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
SUN  
VARIABLE WINDS LESS THAN 10 KT, BECOMING NW LESS THAN  
10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT.    
SUN NIGHT  
N WINDS 10 KT IN THE EVENING, BECOMING VARIABLE  
WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
MON  
VARIABLE WINDS LESS THAN 10 KT, BECOMING NW LESS THAN  
10 KT IN THE AFTERNOON. SEAS 3 TO 4 FT.    
MON NIGHT  
NW WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.  
 
CARIBBEAN BETWEEN 64W AND 72W  
   
TODAY  
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS GULF OF  
VENEZUELA, AND 3 TO 5 FT ELSEWHERE.    
TONIGHT  
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
FRI  
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
FRI NIGHT  
VARIABLE WINDS LESS THAN 10 KT GULF OF VENEZUELA,  
AND E 10 TO 15 KT ELSEWHERE. SEAS 3 TO 4 FT.    
SAT  
E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 3 TO 5 FT.    
SAT NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SUN  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 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 6 TO 8 FT.  
 
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO  
19N W OF 55W  
   
TODAY  
SE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
TONIGHT  
SE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.   
FRI  
SE WINDS 10 KT. SEAS 4 TO 6 FT.    
FRI NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SAT NIGHT  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SUN  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
SUN NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.  
 
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO  
15N W OF 55W  
   
TODAY  
E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 5 TO 7 FT.    
TONIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
FRI  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
FRI NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT  
E WINDS 10 TO 15 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 20 KT. SEAS 6 TO 8 FT.    
MON  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.  
 
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS  
   
SYNOPSIS  
A COLD FRONT HAS STALLED ACROSS THE NE OFFSHORE  
ZONES, ALONG ABOUT 26N-27N. REINFORCING NW SWELL GENERATED NORTH  
OF THE AREA WILL MAINTAIN SEAS IN EXCESS OF 8 FT NORTH OF THE  
MEANDERING FRONT THROUGH FRI. A NEW NEXT COLD FRONT HAS MOVED  
INTO THE NW ZONES OFF OF FLORIDA OVERNIGHT, AND IS EXPECTED TO  
REACH FROM 31N74W TO CENTRAL CUBA THIS MORNING, FROM 31N68W TO  
EASTERN CUBA BY FRI MORNING, AND FROM 31N61W TO NEAR THE  
WINDWARD PASSAGE ON SAT MORNING. THEN, THE FRONT WILL STALL IN  
THAT GENERAL VICINITY AND GRADUALLY DISSIPATE THROUGH THE  
WEEKEND. EXPECT FRESH TO STRONG WINDS AND BUILDING SEAS ON EITHER  
SIDE OF THE FRONT N OF 26N.  
 
ATLC WATERS FROM 27N TO 31N W OF 77W  
   
TODAY  
NW WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TONIGHT  
NW WINDS 15 TO 25 KT. SEAS 7 TO 9 FT.    
FRI  
NW WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.    
FRI NIGHT  
NW WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.    
SAT  
NW WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
SAT NIGHT  
NW WINDS 10 KT IN THE EVENING, BECOMING VARIABLE  
WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
SUN  
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
SUN NIGHT  
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.    
MON  
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.    
MON NIGHT  
S WINDS 10 KT. SEAS 3 FT.  
 
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W  
   
TODAY  
W WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TONIGHT  
W WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
FRI  
W OF 70W, W WINDS 10 TO 20 KT, INCREASING TO 20 TO 30 KT  
IN THE AFTERNOON,SEAS 7 TO 10 FT, BUILDING TO 8 TO 13 FT IN THE  
AFTERNOON. ELSEWHERE, SW WINDS 15 TO 25 KT, SEAS 7 TO 10 FT.    
FRI NIGHT  
W WINDS 15 TO 25 KT. SEAS 9 TO 14 FT W OF 70W, AND  
8 TO 13 FT ELSEWHERE.    
SAT  
W WINDS 10 TO 20 KT. SEAS 8 TO 12 FT.    
SAT NIGHT  
NW WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.    
SUN  
NW WINDS LESS THAN 10 KT. SEAS 7 TO 10 FT.   
SUN NIGHT  
N WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.    
MON  
NE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.    
MON NIGHT  
SE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.  
 
BAHAMAS N OF 22N  
   
TODAY  
SW WINDS 10 TO 15 KT. SEAS 3 FT.    
TONIGHT  
NW WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.    
FRI  
NW WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.    
FRI NIGHT  
NW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT  
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 3 TO 5 FT.    
SAT NIGHT  
NE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
SUN  
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
SUN NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
MON  
NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.  
 
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS  
   
TODAY  
SW WINDS 10 TO 15 KT W OF 70W, AND SW LESS THAN 10 KT  
ELSEWHERE. SEAS 4 TO 6 FT.    
TONIGHT  
W OF 70W, SW WINDS 10 TO 20 KT. ELSEWHERE, S WINDS  
LESS THAN 10 KT, INCREASING TO 10 TO 15 KT AFTER MIDNIGHT. SEAS  
5 TO 7 FT.    
FRI  
SW WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
FRI NIGHT  
W WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SAT  
NW WINDS 10 KT. SEAS 6 TO 9 FT.    
SAT NIGHT  
N WINDS 10 KT. SEAS 6 TO 9 FT.    
SUN  
NE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SUN NIGHT  
NE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
MON  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.  
 
ATLC WATERS S OF 22N W OF 65W  
   
TODAY  
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
TONIGHT  
SE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.   
FRI  
S WINDS LESS THAN 10 KT, SHIFTING TO SW IN THE AFTERNOON.  
SEAS 3 TO 5 FT.    
FRI NIGHT  
SW WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
SAT  
N WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
SAT NIGHT  
NE WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT  
AFTER MIDNIGHT. SEAS 4 TO 6 FT.    
SUN  
NE WINDS 10 TO 15 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 6 TO 8 FT.  
 
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W  
   
TODAY  
SE WINDS LESS THAN 10 KT. SEAS 6 TO 7 FT.    
TONIGHT  
SE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.   
FRI  
SE WINDS 10 KT. SEAS 5 TO 6 FT.    
FRI NIGHT  
SE WINDS 10 KT. SEAS 5 TO 6 FT.    
SAT  
SE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
SAT NIGHT  
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.    
SUN  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SUN NIGHT  
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
MON  
E WINDS 15 KT. SEAS 7 TO 8 FT.    
MON NIGHT  
E WINDS 15 TO 20 KT. SEAS 8 TO 9 FT.  
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