148  
FZNT31 KNHC 172015  
OFFN20  
 
MARINE WEATHER HF VOICE BROADCAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
315 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  
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 NE TO E WINDS IN THE NW CARIBBEAN. A BUILDING RIDGE  
OVER THE NW CARIBBEAN WILL SUPPORT MODERATE TO LOCALLY FRESH N  
TO NE WINDS FRI THROUGH SUN.  
 
NW CARIBBEAN W OF 85W  
   
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.    
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 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.    
SUN  
N WINDS LESS THAN 10 KT, SHIFTING TO NE IN THE AFTERNOON.  
SEAS 3 TO 4 FT.    
SUN NIGHT  
NE 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  
   
TONIGHT  
E WINDS 10 TO 15 KT. S OF 18N, SEAS 4 TO 6 FT.  
ELSEWHERE, 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 S OF 18N, AND N LESS THAN 10 KT  
ELSEWHERE. S OF 18N, SEAS 4 TO 6 FT. ELSEWHERE, SEAS 3 FT IN THE  
MORNING, SUBSIDING TO 2 FT OR LESS.    
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.    
SUN  
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SUN NIGHT  
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 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 4 TO 6 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 4 TO 6 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.  
 
SW CARIBBEAN S OF 11N  
   
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  
N WINDS 10 TO 20 KT. SEAS 5 TO 7 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 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 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 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 5 FT.    
SUN  
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
SUN NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 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 5 TO 7 FT.    
WED  
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
WED NIGHT  
E WINDS 15 TO 25 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 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.    
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.  
 
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO  
15N W OF 55W  
   
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 20 KT. SEAS 6 TO 8 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.    
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.  
 
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS  
   
SYNOPSIS  
THE PRESSURE GRADIENT BETWEEN HIGH PRESSURE OF 1034  
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 JUST 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 31N74W TO SE FLORIDA FRI MORNING, AND  
FROM 31N67W TO EASTERN CUBA BY SAT MORNING. THE NORTHERN PART OF  
THE FRONT WILL CONTINUE TO MOVE EASTWARD WHILE THE SOUTH PART  
BECOME STATIONARY ACROSS THE SE BAHAMAS AND EASTERN CUBA ON SUN  
MORNING.  
 
ATLC WATERS FROM 27N TO 31N W OF 77W  
   
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  
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 5 TO 7 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.    
SUN  
N WINDS LESS THAN 10 KT, SHIFTING TO NE IN THE AFTERNOON.  
SEAS 4 TO 6 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 6 TO 8 FT.    
WED  
SE WINDS 10 TO 20 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 20 KT. SEAS 5 TO 7 FT.    
FRI  
SW WINDS 10 TO 20 KT. SEAS 6 TO 8 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 6 TO 7 FT.  
 
BAHAMAS N OF 22N  
   
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  
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 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 4 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 FT.    
SUN NIGHT  
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 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 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 W OF 70W, AND SE 15 TO 20 KT  
ELSEWHERE. SEAS 6 TO 8 FT W OF 70W, AND 8 TO 11 FT ELSEWHERE.    
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  
NW WINDS LESS THAN 10 KT. SEAS 5 TO 6 FT.    
SAT NIGHT  
NE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.    
SUN  
NE WINDS LESS THAN 10 KT. SEAS 4 TO 6 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 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 6 TO 9 FT.    
THU  
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
THU NIGHT  
E 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  
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
SAT NIGHT  
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
SUN  
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
SUN NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.  
 
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W  
   
TONIGHT  
E WINDS 15 TO 20 KT. SEAS 7 TO 9 FT.    
WED  
E WINDS 20 KT. SEAS 8 TO 10 FT.    
WED NIGHT  
E WINDS 20 TO 25 KT. SEAS 9 TO 11 FT.   
THU  
E WINDS 15 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.    
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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