256  
FZNT31 KNHC 112011  
OFFN20  
 
MARINE WEATHER HF VOICE BROADCAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
311 PM EST WED DEC 11 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  
HIGH PRESSURE N OF AREA COMBINED WITH THE COLOMBIAN  
LOW CONTINUES TO SUPPORT FRESH TO STRONG TRADES AND ROUGH SEAS  
OVER THE CENTRAL CARIBBEAN, INCLUDING OFFSHORE COLOMBIA. THE  
HIGH PRESSURE WILL SHIFT EASTWARD OVER THE CENTRAL ATLANTIC  
THROUGH TONIGHT ALLOWING FOR THE TRADES TO DIMINISH TO MODERATE  
TO FRESH SPEEDS, EXCEPT OFF THE COAST OF COLOMBIA, WHERE FRESH  
TO STRONG WINDS WILL PERSIST THROUGH FRI. A COLD FRONT WILL  
ENTER THE NW CARIBBEAN THIS EVENING, AND BECOME STATIONARY FROM  
EAST- CENTRAL CUBA TO NEAR CABO GRACIAS A DIOS, NICARAGUA THU  
NIGHT WHILE WEAKENING. FRESH TO STRONG NORTHEAST WINDS BEHIND  
THE FRONT WILL DIMINISH SOME ON FRI, EXCEPT IN THE LEE OF CUBA  
AND THE WINDWARD PASSAGE WHERE FRESH TO STRONG NE WINDS WILL  
CONTINUE THROUGH SAT.  
 
NW CARIBBEAN W OF 85W  
   
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
THU  
NE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.    
THU NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
FRI  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
FRI NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SAT  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
SAT NIGHT  
NE 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 15 KT. SEAS 4 TO 6 FT.    
MON  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
MON NIGHT  
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN  
10 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT.  
 
CARIBBEAN N OF 15N BETWEEN 72W AND 85W  
   
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
THU  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
THU NIGHT  
NE WINDS 10 TO 20 KT S OF 18N, AND NE 15 TO 25 KT  
ELSEWHERE. SEAS 5 TO 7 FT.    
FRI  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
FRI NIGHT  
NE WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.    
SAT  
NE WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.    
SAT NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SUN  
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
SUN NIGHT  
NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.    
MON  
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
MON NIGHT  
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.  
 
CARIBBEAN FROM 11N TO 15N W OF 72W  
   
TONIGHT  
NE WINDS 15 TO 25 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND NE 10 TO 20 KT ELSEWHERE. SEAS 6 TO 8 FT.    
THU  
E WINDS 15 TO 25 KT WITHIN 90 NM OF COAST OF COLOMBIA,  
AND NE 10 TO 20 KT ELSEWHERE. SEAS 6 TO 8 FT.    
THU NIGHT  
NE WINDS 15 TO 25 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND NE 10 TO 20 KT ELSEWHERE. SEAS 6 TO 8 FT.    
FRI  
E WINDS 15 TO 25 KT WITHIN 90 NM OF COAST OF COLOMBIA,  
AND NE 10 TO 20 KT ELSEWHERE. SEAS 6 TO 8 FT.    
FRI NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
SAT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
SAT NIGHT  
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SUN  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN NIGHT  
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN  
10 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT.    
MON  
NE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
MON NIGHT  
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.  
 
SW CARIBBEAN S OF 11N  
   
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
THU  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
THU NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
FRI  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
FRI NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
SAT  
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SAT NIGHT  
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SUN  
NE WINDS 10 TO 15 KT, SHIFTING TO N IN THE AFTERNOON.  
SEAS 4 TO 5 FT.    
SUN NIGHT  
N WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.    
MON  
N WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
MON NIGHT  
N WINDS LESS THAN 10 KT. SEAS 3 FT.  
 
CARIBBEAN BETWEEN 64W AND 72W  
   
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
THU  
NE WINDS 10 TO 20 KT. SEAS 3 FT GULF OF VENEZUELA, AND  
4 TO 6 FT ELSEWHERE.    
THU NIGHT  
NE WINDS 10 TO 20 KT. SEAS 3 TO 4 FT GULF OF  
VENEZUELA, AND 5 TO 7 FT ELSEWHERE.    
FRI  
NE WINDS 10 TO 20 KT. SEAS 3 FT GULF OF VENEZUELA, AND  
5 TO 7 FT ELSEWHERE.    
FRI NIGHT  
NE WINDS 10 TO 20 KT. 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 LESS THAN 10 KT. SEAS 3 TO 5 FT.    
SUN  
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
SUN NIGHT  
E WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT  
AFTER MIDNIGHT. SEAS 3 TO 4 FT.    
MON  
E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 3 TO 4 FT.    
MON NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.  
 
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO  
19N W OF 55W  
   
TONIGHT  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
THU  
S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
THU NIGHT  
S WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
FRI  
SE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
FRI NIGHT  
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT  
SE WINDS 10 TO 15 KT. 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 10 TO 15 KT. SEAS 4 TO 6 FT.    
MON  
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
MON NIGHT  
SE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN  
10 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT.  
 
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO  
15N W OF 55W  
   
TONIGHT  
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
THU  
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
THU NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
FRI  
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
FRI NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT  
E WINDS 10 TO 15 KT. 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 10 TO 15 KT. SEAS 4 TO 6 FT.    
MON  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
MON NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS  
   
SYNOPSIS  
FRESH TO STRONG SOUTHERLY WINDS WILL CONTINUE TO  
AFFECT THE NE FLORIDA OFFSHORE WATERS AHEAD OF THE NEXT COLD  
FRONT FORECAST TO ENTER THE BASIN LATER THIS AFTERNOON. FREQUENT  
GUST TO GALE-FORCE AND ROUGH SEAS ARE EXPECTED AHEAD OF THE  
FRONT WHILE MINIMAL GALE FORCE WINDS AND ROUGH SEAS WILL FOLLOW  
THE FRONT THROUGH THIS EVENING. THE FRONT WILL REACH FROM 31N69W  
TO 23N78W THU AFTERNOON, AND 31N68W TO 21.5N75W FRI AFTERNOON  
WHILE WEAKENING. STRONG HIGH PRESSURE IN THE WAKE OF THE FRONT  
WILL TIGHTEN THE PRESSURE GRADIENT AGAINST AN APPROACHING SURFACE  
TROUGH FROM THE EAST. IN ADDITION, STRONG HIGH PRESSURE ALSO  
FOLLOWS THE TROUGH. THIS WEATHER PATTERN WILL LEAD TO THE  
CONTINUATION OF STRONG TO NEAR GALE-FORCE WINDS AND ROUGH SEAS  
ACROSS MOST OF THE REGION THROUGH THE WEEKEND.  
 
ATLC WATERS FROM 27N TO 31N W OF 77W  
   
TONIGHT  
NW WINDS 20 TO 30 KT. SEAS 7 TO 10 FT.    
THU  
N WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
THU NIGHT  
NE WINDS 15 TO 20 KT. SEAS 5 TO 7 FT.    
FRI  
NE WINDS 15 TO 20 KT. SEAS 6 TO 8 FT.    
FRI NIGHT  
NE WINDS 20 TO 25 KT. SEAS 7 TO 10 FT.    
SAT  
E WINDS 20 TO 25 KT. SEAS 9 TO 13 FT.    
SAT NIGHT  
E WINDS 20 TO 25 KT. SEAS 12 TO 15 FT.   
SUN  
E WINDS 10 TO 20 KT. SEAS 11 TO 14 FT.    
SUN NIGHT  
E WINDS 10 TO 20 KT. SEAS 10 TO 13 FT.    
MON  
E WINDS 10 TO 20 KT. SEAS 10 TO 12 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 8 TO 12 FT.  
 
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W  
   
TONIGHT  
SW WINDS 15 TO 25 KT W OF 70W, AND SE 10 TO 15 KT  
ELSEWHERE. SEAS 6 TO 9 FT W OF 70W, AND 5 TO 6 FT ELSEWHERE.    
THU  
W OF 70W, N WINDS 10 TO 20 KT. ELSEWHERE, SE WINDS LESS  
THAN 10 KT, SHIFTING TO E IN THE AFTERNOON. SEAS 6 TO 8 FT.    
THU NIGHT  
NE WINDS 15 TO 25 KT W OF 70W, AND NE 10 TO 20 KT  
ELSEWHERE. SEAS 6 TO 9 FT.    
FRI  
NE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.    
FRI NIGHT  
NE WINDS 20 TO 30 KT. SEAS 9 TO 14 FT.    
SAT  
NE WINDS 20 TO 30 KT. SEAS 12 TO 16 FT.    
SAT NIGHT  
NE WINDS 25 TO 30 KT. SEAS 14 TO 17 FT.    
SUN  
E WINDS 20 TO 30 KT. SEAS 14 TO 16 FT.    
SUN NIGHT  
E WINDS 15 TO 25 KT. SEAS 13 TO 15 FT.    
MON  
E WINDS 15 TO 25 KT. SEAS 11 TO 13 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 9 TO 12 FT.  
 
BAHAMAS N OF 22N  
   
TONIGHT  
E WINDS LESS THAN 10 KT, BECOMING NE 10 TO 20 KT  
AFTER MIDNIGHT. SEAS 3 FT.    
THU  
NE WINDS 15 TO 25 KT. SEAS 3 TO 5 FT.    
THU NIGHT  
NE WINDS 15 TO 25 KT. SEAS 4 TO 6 FT.    
FRI  
NE WINDS 15 TO 25 KT. SEAS 4 TO 6 FT.    
FRI NIGHT  
NE WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.    
SAT  
NE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.    
SAT NIGHT  
NE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.    
SUN  
NE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.    
SUN NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON  
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
MON NIGHT  
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN  
10 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT.  
 
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS  
   
TONIGHT  
SE WINDS LESS THAN 10 KT W OF 70W, AND E 10 TO 15 KT  
ELSEWHERE. SEAS 5 TO 7 FT.    
THU  
W OF 70W, E WINDS LESS THAN 10 KT, SHIFTING TO NE IN THE  
AFTERNOON. ELSEWHERE, NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
THU NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
FRI  
NE WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.    
FRI NIGHT  
NE WINDS 15 TO 25 KT. SEAS 9 TO 12 FT.    
SAT  
NE WINDS 15 TO 25 KT. SEAS 10 TO 15 FT.    
SAT NIGHT  
NE WINDS 20 TO 30 KT. SEAS 10 TO 15 FT.    
SUN  
E WINDS 15 TO 25 KT. SEAS 10 TO 15 FT.    
SUN NIGHT  
E WINDS 15 TO 25 KT. SEAS 9 TO 14 FT.    
MON  
E WINDS 10 TO 20 KT. SEAS 9 TO 13 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.  
 
ATLC WATERS S OF 22N W OF 65W  
   
TONIGHT  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
THU  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
THU NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
FRI  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
FRI NIGHT  
NE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
SAT  
NE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
SAT NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
SUN  
E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 6 TO 9 FT.    
SUN NIGHT  
E WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.   
MON  
E WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.    
MON NIGHT  
E WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.  
 
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W  
   
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
THU  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
THU NIGHT  
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
FRI  
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
FRI NIGHT  
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SAT  
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SAT NIGHT  
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SUN  
SE WINDS 10 TO 15 KT. SEAS 7 TO 8 FT.    
SUN NIGHT  
E WINDS 10 TO 15 KT. SEAS 6 TO 7 FT.    
MON  
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
MON NIGHT  
SE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN  
10 KT AFTER MIDNIGHT. SEAS 6 TO 8 FT.  
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