669  
FZNT31 KNHC 190916  
OFFN20  
 
MARINE WEATHER HF VOICE BROADCAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
416 AM EST THU DEC 19 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  
FRESH TRADE WINDS WILL CONTINUE ACROSS THE EASTERN,  
CENTRAL AND SOUTHWESTERN CARIBBEAN AS WELL AS THROUGH THE  
ATLANTIC PASSAGES THROUGH FRI AS A STRONG PRESSURE GRADIENT  
BETWEEN HIGH PRESSURE IN THE NORTHERN ATLANTIC AND THE COLOMBIAN  
LOW PREVAILS. WINDS WILL PULSE TO STRONG SPEEDS OFFSHORE OF  
COLOMBIA AND VENEZUELA THIS MORNING AND AGAIN TONIGHT. SEAS OF 4  
TO 7 FT WILL PREVAIL OVER THE AFOREMENTIONED AREAS, WITH LOCALLY  
ROUGH SEAS OF 8 TO 9 FT OCCURRING NEAR STRONG WINDS IN THE SOUTH-  
CENTRAL CARIBBEAN. ELSEWHERE, GENTLE TO MODERATE NE WINDS AND  
SEAS OF 2 TO 4 FT ARE EXPECTED IN THE NORTHWESTERN BASIN TODAY.  
HIGH PRESSURE BUILDING OVER THE GULF OF MEXICO THIS WEEKEND WILL  
LEAD TO GENERALLY MODERATE TO LOCALLY FRESH E TO NE WINDS ACROSS  
THE BASIN THROUGH THE WEEKEND. LOOKING AHEAD, A COLD FRONT MOVING  
OFF THE SOUTHEASTERN UNITED STATES WILL PROMOTE FRESH TO LOCALLY  
STRONG NE WINDS ACROSS THE CARIBBEAN SEA EARLY NEXT WEEK.  
 
NW CARIBBEAN W OF 85W  
   
TODAY  
N WINDS LESS THAN 10 KT. SEAS 3 FT.    
TONIGHT  
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
FRI  
N WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
FRI NIGHT  
NE 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 5 FT.    
SUN  
NE WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.    
SUN NIGHT  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
MON  
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 4 TO 6 FT.    
MON NIGHT  
NE WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT  
AFTER MIDNIGHT. SEAS 4 TO 5 FT.  
 
CARIBBEAN N OF 15N BETWEEN 72W AND 85W  
   
TODAY  
NE WINDS 10 TO 15 KT S OF 18N, AND NE LESS THAN 10 KT  
ELSEWHERE. SEAS 4 TO 6 FT.    
TONIGHT  
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
FRI  
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
FRI NIGHT  
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT NIGHT  
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
SUN  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN NIGHT  
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
MON  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.  
 
CARIBBEAN FROM 11N TO 15N W OF 72W  
   
TODAY  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
FRI  
E WINDS 10 TO 20 KT WITHIN 90 NM OF COAST OF COLOMBIA,  
AND NE 10 TO 15 KT ELSEWHERE. SEAS 5 TO 7 FT.    
FRI NIGHT  
NE WINDS 10 TO 15 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 5 TO 6 FT.    
SUN  
NE WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.    
SUN NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 6 FT.    
MON  
NE WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.  
 
SW CARIBBEAN S OF 11N  
   
TODAY  
N WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
TONIGHT  
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 5 TO 7 FT.    
SAT  
N WINDS LESS THAN 10 KT. SEAS 4 TO 6 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 LESS THAN 10 KT. SEAS 3 TO 5 FT.    
MON  
N WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
MON NIGHT  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
CARIBBEAN BETWEEN 64W AND 72W  
   
TODAY  
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT GULF OF VENEZUELA,  
AND 6 TO 8 FT ELSEWHERE.    
TONIGHT  
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT GULF OF  
VENEZUELA, AND 6 TO 8 FT ELSEWHERE.    
FRI  
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT GULF OF VENEZUELA,  
AND 5 TO 7 FT ELSEWHERE.    
FRI NIGHT  
E WINDS 15 TO 20 KT GULF OF VENEZUELA, AND E 10 TO  
15 KT ELSEWHERE. SEAS 5 TO 7 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 6 FT.    
MON  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.  
 
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO  
19N W OF 55W  
   
TODAY  
E WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.    
TONIGHT  
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 5 TO 7 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.  
 
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO  
15N W OF 55W  
   
TODAY  
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
TONIGHT  
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 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 5 TO 7 FT.  
 
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS  
   
SYNOPSIS  
A WIDE SWATH OF FRESH NE TO SE WINDS WILL CONTINUE  
TODAY FOR AREAS NORTH OF 15N AND WEST OF 55W AS A TIGHT PRESSURE  
GRADIENT PREVAILS BETWEEN HIGH PRESSURE IN THE CENTRAL ATLANTIC  
AND THE COLOMBIAN LOW. STRONG E TO NE WINDS WILL OCCUR THROUGH  
THIS MORNING FROM 18N TO 27N EAST OF 67W. VERY ROUGH SEAS OF 12  
TO 13 FT WILL OCCUR NEAR THE AREA OF STRONGEST WINDS. ROUGH SEAS  
IN EXCESS OF 8 FT WILL PREVAIL NORTH OF 15N TODAY BEFORE SEAS  
BEGIN TO SLOWLY SUBSIDE FROM NORTH TO SOUTH LATE TONIGHT THROUGH  
EARLY SAT. SOUTH OF 15N, MODERATE TO LOCALLY FRESH TRADES AND  
ROUGH SEAS WILL PREVAIL TODAY BEFORE WINDS DIMINISH TO MODERATE  
SPEEDS ON FRI. A COLD FRONT WILL MOVE OFF THE COAST OF THE  
SOUTHEASTERN UNITED STATES LATE TONIGHT AND STALL, THEN ENTER THE  
NW ZONES OFF OF FLORIDA FRI, AND REACH FROM 31N68W TO WESTERN  
CUBA BY SAT MORNING. FRESH TO STRONG N TO NW WINDS WILL OCCUR  
BEHIND THE FRONT. LOOKING AHEAD, WIDESPREAD FRESH TO LOCALLY  
STRONG NE WINDS AND ROUGH SEAS WILL REDEVELOP ACROSS AREAS NORTH  
OF 20N EARLY NEXT WEEK.  
 
ATLC WATERS FROM 27N TO 31N W OF 77W  
   
TODAY  
NW WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.    
TONIGHT  
N WINDS 10 KT. SEAS 5 TO 6 FT.    
FRI  
W WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
FRI NIGHT  
NW WINDS 15 TO 25 KT. SEAS 6 TO 8 FT.    
SAT  
N WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SAT NIGHT  
N WINDS 10 KT. SEAS 5 TO 7 FT.    
SUN  
NE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
SUN NIGHT  
NE WINDS 15 TO 20 KT. SEAS 7 TO 10 FT.    
MON  
E WINDS 15 TO 20 KT. SEAS 7 TO 10 FT.    
MON NIGHT  
E WINDS 15 TO 20 KT. SEAS 7 TO 9 FT.  
 
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W  
   
TODAY  
S WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
TONIGHT  
S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
FRI  
W WINDS 10 TO 15 KT W OF 70W, AND S 10 TO 20 KT  
ELSEWHERE. SEAS 6 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  
N WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SUN  
N WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
SUN NIGHT  
NE WINDS 15 TO 20 KT. SEAS 7 TO 10 FT.    
MON  
NE WINDS 15 TO 20 KT. SEAS 8 TO 10 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 8 TO 9 FT.  
 
BAHAMAS N OF 22N  
   
TODAY  
E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 4 TO 6 FT.    
TONIGHT  
NE 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 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT  
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 3 TO 5 FT.    
SAT NIGHT  
NE 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.    
MON  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
MON NIGHT  
E WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.  
 
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS  
   
TODAY  
SE WINDS 10 TO 20 KT W OF 70W, AND SE 15 TO 20 KT  
ELSEWHERE. SEAS 8 TO 11 FT.    
TONIGHT  
SE WINDS 10 TO 15 KT W OF 70W, AND SE 15 TO 20 KT  
ELSEWHERE. SEAS 7 TO 10 FT.    
FRI  
SE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
FRI NIGHT  
W OF 70W, W WINDS LESS THAN 10 KT, SHIFTING TO NW  
AFTER MIDNIGHT. ELSEWHERE, S WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SAT  
W WINDS 10 TO 15 KT, SHIFTING TO NW IN THE AFTERNOON.  
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, INCREASING TO 10 TO 15 KT IN THE  
AFTERNOON. SEAS 5 TO 6 FT.    
SUN NIGHT  
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
MON  
NE WINDS 15 TO 20 KT. SEAS 6 TO 9 FT.    
MON NIGHT  
NE WINDS 15 TO 20 KT. SEAS 8 TO 10 FT.  
 
ATLC WATERS S OF 22N W OF 65W  
   
TODAY  
E WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.    
TONIGHT  
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
FRI  
SE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
FRI NIGHT  
S WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SAT  
NW WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
SAT NIGHT  
NE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
SUN  
NE WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN  
THE AFTERNOON. SEAS 3 TO 5 FT.    
SUN NIGHT  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
MON  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.  
 
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W  
   
TODAY  
E WINDS 15 TO 25 KT. SEAS 10 TO 12 FT.    
TONIGHT  
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 15 TO 20 KT. SEAS 8 TO 9 FT.    
SAT  
SE WINDS 10 TO 15 KT. SEAS 7 TO 8 FT.    
SAT NIGHT  
SE WINDS 10 TO 15 KT. SEAS 6 TO 7 FT.    
SUN  
SE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SUN NIGHT  
E WINDS 10 KT. SEAS 5 TO 6 FT.    
MON  
E WINDS 10 KT. SEAS 5 TO 6 FT.    
MON NIGHT  
NE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.  
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