494  
FZNT31 KNHC 130323  
OFFN20  
 
MARINE WEATHER HF VOICE BROADCAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
1023 PM EST THU DEC 12 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 STATIONARY FRONT EXTENDING FROM CENTRAL CUBA TO  
THE GULF OF HONDURAS WILL DISSIPATE LATE TONIGHT INTO FRI. A  
STRONG RIDGE BUILDING OVER THE GULF OF MEXICO AND SHIFTING TO  
THE SW N ATLANTIC WATERS WILL SUSTAIN FRESH TO STRONG NE WINDS  
AND MODERATE TO ROUGH SEAS IN THE NW CARIBBEAN AND THE WINDWARD  
PASSAGE THROUGH SUN MORNING. AFTERWARD, MODERATE TO FRESH NE  
WINDS WILL FURTHER DIMINISH TO GENTLE TO MODERATE SPEEDS BY MON  
AFTERNOON AS THE BROAD HIGH PRESSURE SHIFT NE AND THEN EASTWARD  
TO THE NORTH-CENTRAL ATLANTIC WATERS. THE HIGH PRESSURE WILL  
ALSO SUPPORT FRESH TO STRONG NE WINDS OVER THE CENTRAL AND SW  
CARIBBEAN THROUGH SAT MORNING. MODERATE TO FRESH NE WINDS OVER  
THE E CARIBBEAN WILL DIMINISH ON FRI AS A SURFACE TROUGH ENTERS  
THE REGION.  
 
NW CARIBBEAN W OF 85W  
   
TONIGHT  
NE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.    
FRI  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 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 20 KT. SEAS 6 TO 8 FT.    
SUN  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 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 15 KT. SEAS 5 TO 7 FT.    
TUE  
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 4 TO 5 FT.    
TUE NIGHT  
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.  
 
CARIBBEAN N OF 15N BETWEEN 72W AND 85W  
   
TONIGHT  
NE WINDS 10 TO 20 KT S OF 18N, AND NE 15 TO 25 KT  
ELSEWHERE. SEAS 6 TO 8 FT.    
FRI  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
FRI NIGHT  
NE WINDS 10 TO 20 KT S OF 18N, AND NE 15 TO 25 KT  
ELSEWHERE. SEAS 5 TO 7 FT.    
SAT  
NE WINDS 10 TO 20 KT S OF 18N, AND NE 15 TO 25 KT  
ELSEWHERE. SEAS 6 TO 8 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  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
MON NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
TUE  
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
TUE NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 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.    
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 15 TO 25 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND NE 10 TO 20 KT ELSEWHERE. 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 FT.    
TUE  
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
TUE NIGHT  
NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.  
 
SW CARIBBEAN S OF 11N  
   
TONIGHT  
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 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, SHIFTING TO N IN THE AFTERNOON.  
SEAS 4 TO 6 FT.    
SUN NIGHT  
N WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.    
MON  
N WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
MON NIGHT  
N WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
TUE  
N WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
TUE NIGHT  
N WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.  
 
CARIBBEAN BETWEEN 64W AND 72W  
   
TONIGHT  
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 3 TO 5 FT GULF OF  
VENEZUELA, AND 4 TO 6 FT ELSEWHERE.    
SAT  
GULF OF VENEZUELA, N WINDS LESS THAN 10 KT, SEAS 3 FT IN  
THE MORNING, SUBSIDING TO 2 FT OR LESS. ELSEWHERE, E WINDS 10 TO  
15 KT, DIMINISHING TO LESS THAN 10 KT IN THE AFTERNOON,SEAS 3 TO  
5 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 10 TO 15 KT. 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 5 FT.    
TUE  
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
TUE NIGHT  
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.  
 
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO  
19N W OF 55W  
   
TONIGHT  
SE WINDS LESS THAN 10 KT, SHIFTING TO SW AFTER  
MIDNIGHT. 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  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 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 5 TO 7 FT.    
MON  
SE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
MON NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
TUE  
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
TUE NIGHT  
E WINDS 10 TO 15 KT. 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.    
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 5 TO 7 FT.    
MON  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
MON NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
TUE  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
TUE NIGHT  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.  
 
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS  
   
SYNOPSIS  
A STATIONARY FRONT EXTENDING FROM 31N68W TO THE  
CENTRAL BAHAMAS AND INTO CENTRAL CUBA WILL DISSIPATE TONIGHT  
INTO FRI. FRESH TO STRONG NORTHERLY WINDS AND ROUGH SEAS  
AFFECTING THE CENTRAL AND SOUTHERN FLORIDA OFFSHORE WATERS, AND  
THE NORTHERN AND CENTRAL BAHAMAS WILL PREVAIL AND EXPAND IN AREAL  
COVERAGE THROUGH THE WEEKEND AS STRONG HIGH PRESSURE BUILDING IN  
THE WAKE OF THE FRONT WILL TIGHTEN THE PRESSURE GRADIENT AGAINST  
AN APPROACHING SURFACE TROUGH FROM THE EAST. FREQUENT GUST TO  
GALE FORCE WINDS ARE LIKELY OVER THE NORTHERN BAHAMAS OFFSHORE  
WATERS SAT THROUGH SUN. WINDS WILL START TO GRADUALLY WEAKEN  
ACROSS THE REGION SUN NIGHT INTO MON.  
 
ATLC WATERS FROM 27N TO 31N W OF 77W  
   
TONIGHT  
NE WINDS 15 TO 20 KT. SEAS 6 TO 9 FT.    
FRI  
NE WINDS 15 TO 25 KT. SEAS 7 TO 9 FT.    
FRI NIGHT  
NE WINDS 20 TO 25 KT. SEAS 8 TO 12 FT.    
SAT  
NE WINDS 20 TO 30 KT. SEAS 10 TO 15 FT.    
SAT NIGHT  
E WINDS 20 TO 30 KT. SEAS 13 TO 17 FT.   
SUN  
NE WINDS 15 TO 25 KT. SEAS 13 TO 16 FT.    
SUN NIGHT  
E WINDS 15 TO 25 KT. SEAS 12 TO 15 FT.    
MON  
E WINDS 15 TO 25 KT. SEAS 11 TO 14 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 9 TO 12 FT.    
TUE  
E WINDS 10 TO 15 KT. SEAS 8 TO 10 FT.    
TUE NIGHT  
E WINDS 10 TO 15 KT. SEAS 7 TO 9 FT.  
 
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W  
   
..GALE WARNING  
 
   
TONIGHT  
NE WINDS 15 TO 25 KT W OF 70W, AND NE 10 TO 15 KT  
ELSEWHERE. SEAS 8 TO 11 FT W OF 70W, AND 6 TO 9 FT ELSEWHERE.    
FRI  
NE WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.    
FRI NIGHT  
NE WINDS 25 TO 35 KT. SEAS 9 TO 14 FT.    
SAT  
NE WINDS 30 TO 35 KT. SEAS 12 TO 18 FT.    
SAT NIGHT  
NE WINDS 30 TO 35 KT. SEAS 12 TO 18 FT.   
SUN  
NE TO E WINDS 25 TO 35 KT. SEAS 11 TO 17 FT IN NE TO E  
SWELL.    
SUN NIGHT  
E WINDS 20 TO 25 KT. SEAS 13 TO 16 FT.    
MON  
E WINDS 20 TO 25 KT. SEAS 12 TO 15 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 10 TO 12 FT.    
TUE  
E WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.    
TUE NIGHT  
E WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.  
 
BAHAMAS N OF 22N  
   
TONIGHT  
NE WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.    
FRI  
NE WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.    
FRI NIGHT  
NE WINDS 15 TO 25 KT. SEAS 6 TO 8 FT.    
SAT  
NE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.    
SAT NIGHT  
NE WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.    
SUN  
NE WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.    
SUN NIGHT  
NE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.    
MON  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
TUE  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
TUE NIGHT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.  
 
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS  
   
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
FRI  
NE WINDS 15 TO 25 KT. SEAS 8 TO 13 FT.    
FRI NIGHT  
NE WINDS 15 TO 25 KT. SEAS 10 TO 13 FT W OF 70W,  
AND 11 TO 14 FT ELSEWHERE.    
SAT  
NE WINDS 20 TO 30 KT W OF 70W, AND E 15 TO 25 KT  
ELSEWHERE. SEAS 11 TO 16 FT W OF 70W, AND 10 TO 14 FT ELSEWHERE.   
SAT NIGHT  
E WINDS 15 TO 25 KT. SEAS 11 TO 16 FT.   
SUN  
E WINDS 15 TO 25 KT. SEAS 11 TO 16 FT.    
SUN NIGHT  
E WINDS 15 TO 25 KT. SEAS 10 TO 15 FT.    
MON  
E WINDS 10 TO 20 KT. SEAS 8 TO 13 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 8 TO 12 FT.    
TUE  
E WINDS 15 TO 20 KT. SEAS 8 TO 11 FT.    
TUE NIGHT  
E WINDS 15 TO 20 KT. SEAS 9 TO 10 FT.  
 
ATLC WATERS S OF 22N W OF 65W  
   
TONIGHT  
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 15 TO 25 KT. SEAS 8 TO 11 FT.    
SAT  
NE WINDS 10 TO 20 KT. SEAS 8 TO 13 FT.    
SAT NIGHT  
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
SUN  
SE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
SUN NIGHT  
E WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
MON  
E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 5 TO 7 FT.    
MON NIGHT  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
TUE  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
TUE NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.  
 
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W  
   
TONIGHT  
NE WINDS 10 TO 15 KT, SHIFTING TO SW AFTER MIDNIGHT.  
SEAS 6 TO 8 FT.    
FRI  
SE WINDS 10 TO 15 KT. SEAS 7 TO 10 FT.    
FRI NIGHT  
SE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
SAT  
SE WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.    
SAT NIGHT  
E WINDS 15 TO 20 KT. SEAS 7 TO 10 FT.    
SUN  
SE WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.    
SUN NIGHT  
E WINDS 10 TO 20 KT. SEAS 7 TO 8 FT.    
MON  
SE WINDS 10 TO 15 KT. SEAS 7 TO 8 FT.    
MON NIGHT  
E WINDS 10 TO 15 KT. SEAS 7 TO 8 FT.    
TUE  
E WINDS 10 TO 20 KT. SEAS 7 TO 8 FT.    
TUE NIGHT  
E WINDS 10 TO 20 KT. SEAS 7 TO 8 FT.  
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