616  
FZNT31 KNHC 170324  
OFFN20  
 
MARINE WEATHER HF VOICE BROADCAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
1024 PM EST MON DEC 16 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 STRONG PRESSURE GRADIENT BETWEEN HIGH PRESSURE  
OVER THE NORTHWESTERN ATLANTIC AND MULTIPLE TROUGHS IN THE  
CENTRAL AND WESTERN CARIBBEAN WILL CONTINUE TO SUPPORT MODERATE  
TO LOCALLY FRESH NE WINDS ACROSS THE NORTHWESTERN CARIBBEAN  
THROUGH TUE MORNING BEFORE WINDS DIMINISH. A TROUGH THAT EXTENDS  
FROM SOUTHEASTERN CUBA TO JUST OFF THE COAST OF EASTERN HONDURAS  
WILL SLOWLY PROGRESS NORTHWESTWARD THROUGH MIDWEEK, AND LOW  
PRESSURE WILL STRENGTHEN OVER NORTHWESTERN COLOMBIA. MODERATE TO  
FRESH TRADE WINDS WILL DEVELOP IN RESPONSE TO THESE FEATURES  
OVER THE CENTRAL AND EASTERN CARIBBEAN BY EARLY TUE AND CONTINUE  
THROUGH FRI. STRONG NE WINDS WILL OCCUR AT TIMES OFF THE COAST  
OF COLOMBIA AND VENEZUELA, THROUGH THE MONA, WINDWARD AND  
ATLANTIC PASSAGES AND IN THE LEE OF HISPANIOLA AND PUERTO RICO,  
WITH THE STRONGEST WINDS OCCURRING AT NIGHT. LOCALLY ROUGH SEAS  
WILL DEVELOP IN AREAS OF STRONG WIND.  
 
NW CARIBBEAN W OF 85W  
   
TONIGHT
 
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 6 FT.    
TUE NIGHT
 
NE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
WED
 
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
WED NIGHT
 
VARIABLE WINDS LESS THAN 10 KT, BECOMING NE LESS  
THAN 10 KT AFTER MIDNIGHT. SEAS 3 FT.    
THU
 
N WINDS LESS THAN 10 KT. SEAS 3 FT.    
THU NIGHT
 
N WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT  
AFTER MIDNIGHT. SEAS 3 TO 4 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 4 TO 5 FT.    
SAT NIGHT
 
N 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
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
TUE
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
TUE NIGHT
 
E WINDS 10 TO 20 KT S OF 18N, AND E LESS THAN 10 KT  
ELSEWHERE. SEAS 3 TO 5 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. SEAS 4 TO 6 FT.    
THU
 
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 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 4 TO 6 FT.  
 
CARIBBEAN FROM 11N TO 15N W OF 72W  
   
TONIGHT
 
NE WINDS 15 TO 20 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND NE 10 TO 20 KT ELSEWHERE. SEAS 3 TO 5 FT.    
TUE
 
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
TUE NIGHT
 
E WINDS 20 TO 25 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND NE 10 TO 20 KT ELSEWHERE. SEAS 6 TO 8 FT WITHIN  
90 NM OF COAST OF COLOMBIA, AND 4 TO 6 FT ELSEWHERE.    
WED
 
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 NIGHT
 
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 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 5 FT.  
 
SW CARIBBEAN S OF 11N  
   
TONIGHT
 
N WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT  
AFTER MIDNIGHT. SEAS 3 TO 5 FT.    
TUE
 
N WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
TUE NIGHT
 
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
WED
 
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
WED NIGHT
 
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
THU
 
NE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
THU NIGHT
 
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
FRI
 
NE 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  
   
TONIGHT
 
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
TUE
 
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT GULF OF VENEZUELA,  
AND 4 TO 6 FT ELSEWHERE.    
TUE NIGHT
 
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 10 TO 20 KT. 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 5 TO 7 FT.    
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.    
SAT 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 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.    
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 7 TO 10 FT.    
FRI
 
E WINDS 10 TO 15 KT. SEAS 6 TO 9 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.  
 
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.    
TUE
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
TUE NIGHT
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
WED
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 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 15 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.  
 
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS  
   
SYNOPSIS
 
A TIGHT PRESSURE GRADIENT BETWEEN STRENGTHENING HIGH  
PRESSURE NORTH OF THE AREA IN THE NORTHWESTERN ATLANTIC AND  
TROUGHING EXTENDING FROM THE SOUTHEASTERN BAHAMAS INTO CENTRAL  
CUBA WILL CONTINUE TO SUPPORT WIDESPREAD FRESH E TO NE WINDS AND  
ROUGH SEAS NORTH OF THE GREATER ANTILLES THROUGH TUE. LARGE NE  
SWELL GENERATED BY EARLIER STRONG GALE WINDS ACROSS THE NORTHERN  
ATLANTIC IS PERSISTING ACROSS THE WEST AND CENTRAL ATLANTIC. IT  
IS SUSTAINING SEAS OF 12 TO 14 FT NORTH OF 27N BETWEEN 45W AND  
THE NORTHERN BAHAMAS. THE SWELL WILL SLOWLY DECAY TONIGHT  
ALLOWING FOR SEAS TO SUBSIDE BELOW 12 FT BY TUE. ELSEWHERE, A  
COLD FRONT IN THE CENTRAL ATLANTIC WILL PROGRESS SOUTHWARD  
THROUGH WED, PRODUCING FRESH TO STRONG WINDS FOR AREAS NORTH OF  
20N THROUGH THU. SOUTH OF 20N, MODERATE TO FRESH TRADES WILL  
PREVAIL THROUGH LATE THIS WEEK. LOOKING AHEAD, 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  
   
TONIGHT
 
E WINDS 10 TO 20 KT. SEAS 9 TO 12 FT.    
TUE
 
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
TUE NIGHT
 
SE WINDS 10 TO 20 KT. SEAS 7 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
 
NW WINDS 10 KT. SEAS 5 TO 7 FT.    
THU NIGHT
 
N WINDS 10 KT. SEAS 5 TO 6 FT.    
FRI
 
NW WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN  
THE AFTERNOON. SEAS 5 TO 6 FT.    
FRI NIGHT
 
NW WINDS 15 TO 20 KT. SEAS 6 TO 7 FT.    
SAT
 
N WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SAT NIGHT
 
N WINDS 10 KT. SEAS 5 TO 6 FT.  
 
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W  
   
TONIGHT
 
E WINDS 10 TO 20 KT. SEAS 8 TO 12 FT.    
TUE
 
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
TUE NIGHT
 
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 8 FT.    
THU NIGHT
 
S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
FRI
 
SW WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
FRI NIGHT
 
W WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SAT
 
NW WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
SAT NIGHT
 
N WINDS 10 KT. SEAS 6 TO 8 FT.  
 
BAHAMAS N OF 22N  
   
TONIGHT
 
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TUE
 
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TUE NIGHT
 
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
WED
 
SE 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, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 4 TO 6 FT.    
THU NIGHT
 
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
FRI
 
N 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 4 FT.    
SAT
 
N WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT NIGHT
 
NE WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT  
AFTER MIDNIGHT. SEAS 3 TO 4 FT.  
 
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS  
   
TONIGHT
 
E WINDS 15 TO 25 KT. SEAS 10 TO 12 FT.    
TUE
 
E WINDS 15 TO 20 KT. SEAS 9 TO 11 FT.    
TUE NIGHT
 
E WINDS 15 TO 25 KT W OF 70W, AND E 10 TO 20 KT  
ELSEWHERE. SEAS 9 TO 11 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
 
SE WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.    
THU NIGHT
 
SE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
FRI
 
S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
FRI NIGHT
 
S WINDS LESS THAN 10 KT, SHIFTING TO SW AFTER  
MIDNIGHT. 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 5 TO 6 FT.  
 
ATLC WATERS S OF 22N W OF 65W  
   
TONIGHT
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
TUE
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
TUE NIGHT
 
E WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.    
WED
 
E WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.    
WED NIGHT
 
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.   
THU
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
THU NIGHT
 
SE WINDS 10 TO 20 KT. SEAS 6 TO 8 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
 
S WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
SAT NIGHT
 
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.  
 
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W  
   
TONIGHT
 
E WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.    
TUE
 
E WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.    
TUE NIGHT
 
E WINDS 15 TO 20 KT. SEAS 8 TO 10 FT.    
WED
 
E WINDS 15 TO 20 KT. SEAS 9 TO 10 FT.    
WED NIGHT
 
E WINDS 20 TO 25 KT. SEAS 9 TO 11 FT.   
THU
 
E WINDS 15 TO 25 KT. SEAS 10 TO 11 FT.    
THU NIGHT
 
E WINDS 15 TO 20 KT. SEAS 9 TO 10 FT.    
FRI
 
E WINDS 10 TO 20 KT. SEAS 8 TO 10 FT.    
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 7 TO 9 FT.    
SAT
 
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SAT NIGHT
 
E WINDS 10 TO 15 KT. SEAS 6 TO 7 FT.  
 
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