508  
FZNT31 KNHC 171523  
OFFN20  
 
MARINE WEATHER HF VOICE BROADCAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
1023 AM EST TUE DEC 17 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 THE AREA COMBINED WITH THE  
COLOMBIAN LOW WILL SUPPORT FRESH TO STRONG WINDS AND MODERATE TO  
ROUGH SEAS ACROSS THE CENTRAL CARIBBEAN BEGINNING TONIGHT  
THROUGH THU NIGHT. THE HIGHEST SEAS ARE EXPECTED NEAR THE COAST  
OF COLOMBIA. AS THE HIGH PRESSURE OVER THE ATLANTIC MOVES  
EASTWARD, EXPECT FRESH WINDS OVER THE NE CARIBBEAN TONIGHT  
THROUGH THU WITH MODERATE TO ROUGH SEAS IN NE SWELL ACROSS THE  
ATLANTIC PASSAGES. ELSEWHERE, MODERATE TO FRESH WINDS AND SLIGHT  
TO MODERATE SEAS ARE EXPECTED, WITH THE EXCEPTION OF GENTLE TO  
MODERATE WINDS IN THE NW CARIBBEAN.  
 
NW CARIBBEAN W OF 85W  
   
TODAY
 
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 3 TO 5 FT.    
TONIGHT
 
NE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.   
WED
 
NE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
WED NIGHT
 
NE WINDS LESS THAN 10 KT. SEAS 3 FT IN THE EVENING,  
SUBSIDING TO 2 FT OR LESS.    
THU
 
N WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.    
THU NIGHT
 
N WINDS 10 TO 15 KT. SEAS 3 FT.    
FRI
 
N WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
FRI NIGHT
 
N WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT
 
N WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT NIGHT
 
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT  
AFTER MIDNIGHT. SEAS 3 TO 4 FT.  
 
CARIBBEAN N OF 15N BETWEEN 72W AND 85W  
   
TODAY
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
TONIGHT
 
S OF 18N, E WINDS 10 TO 20 KT, SEAS 4 TO 6 FT.  
ELSEWHERE, E WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT  
AFTER MIDNIGHT,SEAS 2 FT OR LESS, BUILDING TO 3 TO 4 FT AFTER  
MIDNIGHT.    
WED
 
S OF 18N, E WINDS 10 TO 20 KT. ELSEWHERE, E WINDS 10 TO  
15 KT, DIMINISHING TO LESS THAN 10 KT IN THE AFTERNOON. SEAS  
4 TO 6 FT S OF 18N, AND 3 TO 4 FT ELSEWHERE.    
WED NIGHT
 
NE WINDS 10 TO 20 KT S OF 18N, AND NE LESS THAN  
10 KT ELSEWHERE. SEAS 4 TO 6 FT S OF 18N, AND 3 FT ELSEWHERE.    
THU
 
NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.    
THU NIGHT
 
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
FRI
 
N WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
FRI NIGHT
 
N WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT
 
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT NIGHT
 
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.  
 
CARIBBEAN FROM 11N TO 15N W OF 72W  
   
TODAY
 
NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.    
TONIGHT
 
E WINDS 20 TO 25 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND NE 10 TO 20 KT ELSEWHERE. SEAS 4 TO 6 FT.    
WED
 
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
WED NIGHT
 
E WINDS 20 TO 25 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND NE 10 TO 20 KT ELSEWHERE. SEAS 5 TO 7 FT.    
THU
 
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
THU NIGHT
 
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
FRI
 
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
FRI NIGHT
 
NE WINDS 10 TO 20 KT. SEAS 5 TO 6 FT.    
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.  
 
SW CARIBBEAN S OF 11N  
   
TODAY
 
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
TONIGHT
 
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
WED
 
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
WED NIGHT
 
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
 
N WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
FRI
 
N WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
FRI NIGHT
 
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT
 
NE WINDS 10 TO 15 KT, SHIFTING TO N IN THE AFTERNOON.  
SEAS 3 TO 5 FT.    
SAT NIGHT
 
N WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.  
 
CARIBBEAN BETWEEN 64W AND 72W  
   
TODAY
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
TONIGHT
 
E WINDS 20 TO 25 KT GULF OF VENEZUELA, AND E 10 TO  
20 KT ELSEWHERE. SEAS 4 TO 6 FT.    
WED
 
E WINDS 15 TO 25 KT GULF OF VENEZUELA, AND E 10 TO 20 KT  
ELSEWHERE. SEAS 4 TO 6 FT.    
WED NIGHT
 
E WINDS 20 TO 25 KT GULF OF VENEZUELA, AND E 10 TO  
20 KT ELSEWHERE. SEAS 5 TO 7 FT.    
THU
 
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
THU NIGHT
 
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
FRI
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.    
SAT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT 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  
   
TODAY
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
TONIGHT
 
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
WED
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
WED NIGHT
 
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.   
THU
 
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
THU NIGHT
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
FRI
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SAT
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SAT 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  
   
TODAY
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
TONIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
WED
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
WED NIGHT
 
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
THU
 
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
THU NIGHT
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
FRI
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SAT
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SAT NIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS  
   
SYNOPSIS
 
THE PRESSURE GRADIENT BETWEEN HIGH PRESSURE OF  
1035 MB LOCATED NE OF BERMUDA AND A LOW-LEVEL TROUGH OVER THE SE  
BAHAMAS AND EASTERN CUBA CONTINUES TO SUPPORT FRESH TO STRONG E  
WINDS AND ROUGH SEAS E OF THE BAHAMAS TO ABOUT 65W. A COLD FRONT  
IS MOVING ACROSS THE NE WATERS PRODUCING FRESH TO LOCALLY STRONG  
WINDS. WINDS WILL DIMINISH E OF THE BAHAMAS ON WED BUT INCREASE  
ACROSS THE WATERS S OF 27N BETWEEN 55W AND 70W AS THE ATLANTIC  
HIGH PRESSURE MOVES EASTWARD. THESE WINDS WILL DIMINISH BY THU  
NIGHT AS A LOW PRESSURE DEVELOPS E OF AREA. THE NEXT COLD FRONT  
IS FORECAST TO MOVE OFF THE NORTHEASTERN FLORIDA COAST WED NIGHT,  
REACH FROM NEAR 32N71W TO THE CENTRAL BAHAMAS BY LATE THU NIGHT  
AND STALL. A STRONG COLD FRONT MAY QUICKLY MERGE WITH THE STALLED  
FRONT LATE ON FRI, FOLLOWED BY FRESH TO STRONG NW WINDS.  
 
ATLC WATERS FROM 27N TO 31N W OF 77W  
   
TODAY
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
TONIGHT
 
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
WED
 
SE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
WED NIGHT
 
S WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.   
THU
 
N WINDS LESS THAN 10 KT. SEAS 5 TO 6 FT.    
THU NIGHT
 
N WINDS LESS THAN 10 KT IN THE EVENING, BECOMING  
VARIABLE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.    
FRI
 
NW WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
FRI NIGHT
 
NW WINDS 15 TO 20 KT. SEAS 6 TO 8 FT.    
SAT
 
N WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SAT NIGHT
 
N WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.  
 
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W  
   
TODAY
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
TONIGHT
 
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
WED
 
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
WED NIGHT
 
SE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
THU
 
S WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
THU NIGHT
 
S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
FRI
 
SW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
FRI NIGHT
 
W WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
SAT
 
NW WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
SAT NIGHT
 
NW WINDS 10 KT. SEAS 6 TO 8 FT.  
 
BAHAMAS N OF 22N  
   
TODAY
 
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
TONIGHT
 
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
WED
 
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
WED NIGHT
 
SE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
THU
 
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
THU NIGHT
 
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
FRI
 
E WINDS LESS THAN 10 KT, SHIFTING TO NW IN THE AFTERNOON.  
SEAS 3 TO 4 FT.    
FRI NIGHT
 
NW WINDS LESS THAN 10 KT, SHIFTING TO N AFTER  
MIDNIGHT. SEAS 3 TO 4 FT.    
SAT
 
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 3 TO 4 FT.    
SAT NIGHT
 
N WINDS 10 TO 15 KT, SHIFTING TO NE AFTER MIDNIGHT.  
SEAS 3 TO 4 FT.  
 
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS  
   
TODAY
 
E WINDS 20 TO 25 KT W OF 70W, AND E 10 TO 20 KT  
ELSEWHERE. SEAS 8 TO 10 FT.    
TONIGHT
 
E WINDS 15 TO 25 KT W OF 70W, AND E 10 TO 20 KT  
ELSEWHERE. SEAS 7 TO 10 FT.    
WED
 
E WINDS 15 TO 25 KT W OF 70W, AND E 10 TO 20 KT  
ELSEWHERE. SEAS 7 TO 10 FT.    
WED NIGHT
 
E WINDS 10 TO 20 KT W OF 70W, AND E 15 TO 25 KT  
ELSEWHERE. SEAS 7 TO 10 FT.    
THU
 
SE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
THU NIGHT
 
SE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
FRI
 
S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
FRI NIGHT
 
SW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SAT
 
W WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.    
SAT NIGHT
 
N WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.  
 
ATLC WATERS S OF 22N W OF 65W  
   
TODAY
 
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TONIGHT
 
E WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.    
WED
 
E WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.    
WED NIGHT
 
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.   
THU
 
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
THU NIGHT
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
FRI
 
SE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
FRI NIGHT
 
SE WINDS 10 TO 15 KT, SHIFTING TO S AFTER MIDNIGHT.  
SEAS 4 TO 6 FT.    
SAT
 
SE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
SAT NIGHT
 
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.  
 
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W  
   
TODAY
 
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TONIGHT
 
E WINDS 15 TO 20 KT. SEAS 7 TO 9 FT.    
WED
 
E WINDS 15 TO 20 KT. SEAS 8 TO 10 FT.    
WED NIGHT
 
E WINDS 20 TO 25 KT. SEAS 9 TO 11 FT.   
THU
 
E WINDS 20 TO 25 KT. SEAS 9 TO 11 FT.    
THU NIGHT
 
E WINDS 15 TO 20 KT. SEAS 8 TO 10 FT.    
FRI
 
E WINDS 15 TO 20 KT. SEAS 7 TO 9 FT.    
FRI NIGHT
 
E WINDS 10 TO 20 KT. SEAS 7 TO 8 FT.    
SAT
 
SE WINDS 10 TO 15 KT. SEAS 6 TO 7 FT.    
SAT NIGHT
 
SE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.  
 
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