093  
FZNT31 KNHC 180305  
OFFN20  
 
MARINE WEATHER HF VOICE BROADCAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
1005 PM 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
 
A TIGHT PRESSURE GRADIENT BETWEEN HIGH PRESSURE IN  
THE CENTRAL ATLANTIC AND BUILDING LOW PRESSURE OVER COLOMBIA  
WILL SUPPORT MODERATE TO FRESH TRADE WINDS OVER THE CENTRAL,  
EASTERN AND SOUTHWESTERN CARIBBEAN THROUGH FRI MORNING. PERIODS  
OF STRONG WINDS WILL OCCUR OFF THE COAST OF COLOMBIA AND  
VENEZUELA TONIGHT INTO FRI MORNING. STRONG NE WINDS ARE ALSO  
EXPECTED DOWNWIND OF HISPANIOLA AND THROUGH THE ATLANTIC  
PASSAGES TONIGHT INTO EARLY THU. SEAS OF 4 TO 7 FT WILL PREVAIL  
ACROSS THE AFOREMENTIONED AREAS, WITH LOCALLY ROUGH SEAS  
PROMPTED BY STRONG WINDS OFF THE COAST OF COLOMBIA THROUGH LATE  
THIS WEEK. A LONG PERIOD NE SWELL WILL PRODUCE ROUGH SEAS  
THROUGH THE ATLANTIC PASSAGES WED INTO FRI BEFORE SEAS DIMINISH.  
ELSEWHERE, GENTLE TO LOCALLY MODERATE NE WINDS AND SEAS OF 3 TO  
5 FT ARE EXPECTED IN THE NORTHWESTERN CARIBBEAN THROUGH FRI.  
LOOKING AHEAD, BUILDING HIGH PRESSURE OVER EASTERN MEXICO WILL  
LEAD TO GENERALLY MODERATE TO LOCALLY FRESH E TO NE WINDS ACROSS  
THE BASIN THIS WEEKEND.  
 
NW CARIBBEAN W OF 85W  
   
TONIGHT
 
NE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.   
WED
 
NE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
WED NIGHT
 
NE WINDS LESS THAN 10 KT. SEAS 3 FT.    
THU
 
N WINDS LESS THAN 10 KT. SEAS 3 FT.    
THU NIGHT
 
N WINDS 10 TO 15 KT. SEAS 3 FT.    
FRI
 
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
FRI NIGHT
 
N WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT
 
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT NIGHT
 
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT  
AFTER MIDNIGHT. SEAS 3 TO 5 FT.    
SUN
 
N WINDS LESS THAN 10 KT, SHIFTING TO NE IN THE AFTERNOON.  
SEAS 3 TO 5 FT.    
SUN NIGHT
 
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN  
10 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT.  
 
CARIBBEAN N OF 15N BETWEEN 72W AND 85W  
   
TONIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
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.    
WED NIGHT
 
NE WINDS 10 TO 20 KT S OF 18N, AND NE LESS THAN  
10 KT ELSEWHERE. SEAS 4 TO 6 FT.    
THU
 
NE WINDS 10 TO 20 KT S OF 18N, AND N LESS THAN 10 KT  
ELSEWHERE. SEAS 4 TO 6 FT S OF 18N, AND 3 TO 4 FT ELSEWHERE.    
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 4 TO 6 FT.    
SUN
 
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN NIGHT
 
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
CARIBBEAN FROM 11N TO 15N W OF 72W  
   
TONIGHT
 
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.    
WED
 
E WINDS 15 TO 25 KT WITHIN 90 NM OF COAST OF COLOMBIA,  
AND NE 10 TO 20 KT ELSEWHERE. 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
 
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 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 5 TO 6 FT.    
SAT NIGHT
 
NE WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.    
SUN
 
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN NIGHT
 
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
SW CARIBBEAN S OF 11N  
   
TONIGHT
 
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
WED
 
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
WED NIGHT
 
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
THU
 
N WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
THU NIGHT
 
NE 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.    
SUN
 
N WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
SUN NIGHT
 
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT  
AFTER MIDNIGHT. SEAS 3 TO 5 FT.  
 
CARIBBEAN BETWEEN 64W AND 72W  
   
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 3 TO 4 FT GULF OF VENEZUELA, AND 5 TO 7 FT  
ELSEWHERE.    
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 3 TO 4 FT GULF OF VENEZUELA,  
AND 5 TO 7 FT ELSEWHERE.    
THU NIGHT
 
E WINDS 10 TO 20 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 6 FT.    
SAT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT NIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.    
SUN
 
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.    
SUN NIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.  
 
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO  
19N W OF 55W  
   
TONIGHT
 
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
WED
 
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
WED NIGHT
 
E WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.   
THU
 
E WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.    
THU NIGHT
 
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
FRI
 
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
SAT
 
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SAT NIGHT
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 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.  
 
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO  
15N W OF 55W  
   
TONIGHT
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
WED
 
E WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
WED NIGHT
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
THU
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
THU NIGHT
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
FRI
 
E WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SAT
 
E WINDS 10 TO 15 KT. SEAS 6 TO 8 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.  
 
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS  
   
SYNOPSIS
 
A STRONG PRESSURE GRADIENT BETWEEN A 1035 MB HIGH IN  
THE CENTRAL ATLANTIC AND TROUGHING OVER CENTRAL FLORIDA WILL  
CONTINUE TO SUPPORT FRESH E WINDS ACROSS AREAS NORTH OF THE  
GREATER ANTILLES THROUGH WED, WITH STRONG WINDS ANTICIPATED OVER  
THE SOUTHEASTERN BAHAMAS. FARTHER EAST, A COLD FRONT ANALYZED  
FROM 31N30W TO 25N56W WILL PROGRESS SLOWLY SOUTHWESTWARD THROUGH  
THU, PRODUCING WIDESPREAD FRESH E WINDS BOTH AHEAD AND BEHIND THE  
FRONT, WITH STRONG WINDS OCCURRING ALONG THE FRONT. ROUGH SEAS  
ASSOCIATED WITH THESE FEATURES WILL OCCUR NORTH OF 15N THROUGH  
THE END OF THE WORK WEEK BEFORE SEAS BEGIN TO SLOWLY SUBSIDE FROM  
NORTH TO SOUTH LATE THU THROUGH EARLY SAT. VERY ROUGH SEAS IN  
EXCESS OF 12 FT WILL BE POSSIBLE ALONG AND BEHIND THE  
AFOREMENTIONED COLD FRONT. ELSEWHERE, FRESH TRADE WINDS AND ROUGH  
SEAS WILL PREVAIL SOUTH OF 17N THROUGH THU BEFORE WINDS DIMINISH  
TO MODERATE SPEEDS ON FRI. A COLD FRONT WILL MOVE OFF THE COAST  
OF THE SOUTHEASTERN UNITED STATES LATE WED INTO THU AND EXTEND  
FROM NEAR 31N74W TO SE FLORIDA FRI MORNING, AND FROM 31N67W TO  
EASTERN CUBA BY SAT MORNING. FRESH TO LOCALLY STRONG N TO NW  
WINDS WILL OCCUR BEHIND THE FRONT.  
 
ATLC WATERS FROM 27N TO 31N W OF 77W  
   
TONIGHT
 
SE WINDS 10 TO 20 KT. SEAS 7 TO 9 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
 
SW WINDS 10 TO 15 KT, SHIFTING TO W IN THE AFTERNOON.  
SEAS 5 TO 7 FT.    
THU NIGHT
 
N WINDS 10 KT. SEAS 4 TO 6 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 6 TO 7 FT.    
SAT NIGHT
 
N WINDS LESS THAN 10 KT. SEAS 5 TO 6 FT.    
SUN
 
N WINDS LESS THAN 10 KT, SHIFTING TO NE IN THE AFTERNOON.  
SEAS 6 TO 8 FT.    
SUN NIGHT
 
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.  
 
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W  
   
TONIGHT
 
E WINDS 10 TO 15 KT. SEAS 7 TO 9 FT.    
WED
 
SE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
WED NIGHT
 
SE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
THU
 
S WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
THU NIGHT
 
S WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
FRI
 
SW WINDS 10 TO 20 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 8 FT.    
SAT NIGHT
 
N WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.    
SUN
 
N WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN THE  
AFTERNOON. SEAS 6 TO 8 FT.    
SUN NIGHT
 
N WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.  
 
BAHAMAS N OF 22N  
   
TONIGHT
 
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
WED
 
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
WED NIGHT
 
SE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
THU
 
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
THU NIGHT
 
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
FRI
 
NW WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
FRI NIGHT
 
N WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT  
AFTER MIDNIGHT. SEAS 3 TO 5 FT.    
SAT
 
N WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
SAT NIGHT
 
N WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
SUN
 
NE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
SUN NIGHT
 
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.  
 
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS  
   
TONIGHT
 
E WINDS 15 TO 25 KT W OF 70W, AND E 10 TO 20 KT  
ELSEWHERE. SEAS 9 TO 11 FT.    
WED
 
E WINDS 15 TO 25 KT W OF 70W, AND E 10 TO 20 KT  
ELSEWHERE. SEAS 8 TO 11 FT.    
WED NIGHT
 
E WINDS 10 TO 20 KT W OF 70W, AND E 15 TO 25 KT  
ELSEWHERE. SEAS 8 TO 11 FT.    
THU
 
SE WINDS 10 TO 20 KT W OF 70W, AND SE 15 TO 20 KT  
ELSEWHERE. SEAS 8 TO 11 FT.    
THU NIGHT
 
SE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
FRI
 
S WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
FRI NIGHT
 
SW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SAT
 
NW WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.    
SAT NIGHT
 
NE WINDS LESS THAN 10 KT. SEAS 5 TO 6 FT.    
SUN
 
NE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.    
SUN NIGHT
 
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.  
 
ATLC WATERS S OF 22N W OF 65W  
   
TONIGHT
 
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
WED
 
E WINDS 10 TO 20 KT. SEAS 8 TO 11 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 6 TO 8 FT.    
FRI NIGHT
 
SE WINDS 10 TO 15 KT, SHIFTING TO S AFTER MIDNIGHT.  
SEAS 5 TO 7 FT.    
SAT
 
E WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
SAT NIGHT
 
E WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
SUN
 
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
SUN NIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.  
 
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W  
   
TONIGHT
 
E WINDS 15 TO 20 KT. SEAS 9 TO 11 FT.    
WED
 
E WINDS 20 KT. SEAS 9 TO 11 FT.    
WED NIGHT
 
E WINDS 20 TO 25 KT. SEAS 9 TO 12 FT.   
THU
 
E WINDS 15 TO 25 KT. SEAS 10 TO 12 FT.    
THU NIGHT
 
E WINDS 15 TO 20 KT. SEAS 9 TO 11 FT.    
FRI
 
E WINDS 15 TO 20 KT. SEAS 8 TO 10 FT.    
FRI NIGHT
 
E WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.    
SAT
 
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SAT NIGHT
 
SE WINDS 10 TO 15 KT. SEAS 6 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.  
 
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