785  
FZNT31 KNHC 220300  
OFFN20  
 
MARINE WEATHER HF VOICE BROADCAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
1000 PM EST SAT DEC 21 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  
MODERATE TO FRESH NE WINDS ARE EXPECTED ACROSS THE  
WESTERN CARIBBEAN THROUGH SUN BEHIND A COLD FRONT STALLING FROM  
SOUTHEASTERN CUBA THROUGH THE GULF OF HONDURAS, BEFORE THE COLD  
FRONT DISSIPATES SUN NIGHT. ELSEWHERE, MODERATE TO LOCALLY FRESH  
E WINDS WILL PREVAIL OVER THE EASTERN BASIN. HIGH PRESSURE WILL  
BUILD OVER EASTERN MEXICO EARLY NEXT WEEK, AND LOW PRESSURE OVER  
NORTHERN COLOMBIA WILL STRENGTHEN. THE INCREASING PRESSURE  
GRADIENT BETWEEN THESE FEATURES WILL LEAD TO FRESH TO LOCALLY  
STRONG NE TO E WINDS ACROSS MUCH OF THE BASIN SUN NIGHT THROUGH  
AT LEAST TUE. PULSING STRONG WINDS ARE EXPECTED THROUGH THE  
WINDWARD PASSAGE, DOWNWIND OF SOUTHWESTERN CUBA AND OFFSHORE OF  
COLOMBIA, AND ROUGH SEAS WILL BE POSSIBLE NEAR STRONG WINDS.  
WINDS AND SEAS WILL SLOWLY DIMINISH BY MID TO LATE WEEK.  
 
NW CARIBBEAN W OF 85W  
   
TONIGHT  
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN  
N WINDS 10 TO 15 KT. SEAS 4 TO 6 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 3 TO 5 FT.    
MON NIGHT  
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN  
10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT.    
TUE  
NE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.   
TUE NIGHT  
NE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
WED  
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
WED NIGHT  
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
THU  
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
THU NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.  
 
CARIBBEAN N OF 15N BETWEEN 72W AND 85W  
   
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
SUN  
NE WINDS 10 TO 20 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 4 TO 6 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
TUE  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
TUE NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
WED  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
WED NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
THU  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
THU NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.  
 
CARIBBEAN FROM 11N TO 15N W OF 72W  
   
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SUN  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
SUN NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
MON  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
MON NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TUE  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TUE NIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
WED  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
WED NIGHT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
THU  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
THU NIGHT  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
SW CARIBBEAN S OF 11N  
   
TONIGHT  
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN  
N WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
SUN NIGHT  
N WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT  
AFTER MIDNIGHT. SEAS 4 TO 6 FT.    
MON  
N WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
MON NIGHT  
N WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
TUE  
NE WINDS 10 TO 15 KT, SHIFTING TO N IN THE AFTERNOON.  
SEAS 5 TO 7 FT.    
TUE NIGHT  
N WINDS 10 TO 15 KT, SHIFTING TO NE AFTER MIDNIGHT.  
SEAS 5 TO 7 FT.    
WED  
NE WINDS LESS THAN 10 KT, SHIFTING TO NW IN THE  
AFTERNOON. SEAS 4 TO 6 FT.    
WED NIGHT  
NW WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
THU  
NW WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
THU NIGHT  
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.  
 
CARIBBEAN BETWEEN 64W AND 72W  
   
TONIGHT  
E WINDS 10 TO 15 KT. SEAS 3 FT GULF OF VENEZUELA, AND  
4 TO 6 FT ELSEWHERE.    
SUN  
E WINDS 10 TO 15 KT. SEAS 3 FT GULF OF VENEZUELA, AND  
4 TO 6 FT ELSEWHERE.    
SUN NIGHT  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
MON  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
TUE  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
TUE NIGHT  
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  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
THU  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
THU 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 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 20 KT. SEAS 5 TO 7 FT.    
TUE  
E WINDS 10 TO 20 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 15 KT. SEAS 5 TO 7 FT.    
THU  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
THU NIGHT  
NE WINDS 10 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.    
SUN  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SUN NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
TUE  
E WINDS 10 TO 15 KT. SEAS 6 TO 8 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 15 KT. SEAS 4 TO 6 FT.    
THU  
E 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 4 TO 6 FT.  
 
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS  
   
SYNOPSIS  
A COLD FRONT EXTENDING FROM 31N63W TO EASTERN CUBA  
WILL PROGRESS EASTWARD THROUGH EARLY NEXT WEEK, AND MODERATE NW  
WINDS WILL OCCUR BEHIND THE FRONT THROUGH SUN. FARTHER EAST,  
FRESH SE TO S WINDS WILL OCCUR NORTH OF 25N AND EAST OF 60W  
THROUGH SUN MORNING ALONG THE PERIPHERY OF A 1023 MB HIGH IN THE  
CENTRAL ATLANTIC. THE HIGH WILL WEAKEN AND DRIFT EASTWARD EARLY  
NEXT WEEK. SOUTH OF 20N, MODERATE TO BRIEFLY FRESH TRADES WILL  
PREVAIL INTO THE MIDDLE OF NEXT WEEK. TROUGHING WILL DEVELOP EAST  
OF THE BAHAMAS SUN THEN DRIFT WESTWARD TOWARD THE EAST COAST OF  
FLORIDA BY LATE MON, WHILE LOW PRESSURE DEVELOPS OFF THE COAST OF  
NE FLORIDA. STRENGTHENING HIGH PRESSURE IN THE CENTRAL UNITED  
STATES WILL DRIFT EASTWARD, AND THE TIGHTENING PRESSURE GRADIENT  
BETWEEN THESE FEATURES WILL RESULT IN WIDESPREAD FRESH TO STRONG  
NE WINDS AND VERY ROUGH SEAS NORTH OF 22N BETWEEN 60W AND 72W MON  
MORNING, WITH WINDS AND SEAS DEVELOPING FARTHER WEST ACROSS THE  
BAHAMAS BY MON AFTERNOON. WINDS AND SEAS WILL DIMINISH TUE NIGHT  
INTO EARLY WED.  
 
ATLC WATERS FROM 27N TO 31N W OF 77W  
   
TONIGHT  
N WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SUN  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
SUN NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON  
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
MON NIGHT  
SE WINDS 15 TO 25 KT, DIMINISHING TO 10 TO 15 KT  
AFTER MIDNIGHT. SEAS 7 TO 10 FT.    
TUE  
SW WINDS LESS THAN 10 KT, SHIFTING TO N IN THE AFTERNOON.  
SEAS 7 TO 10 FT.    
TUE NIGHT  
NE WINDS 10 KT. SEAS 6 TO 8 FT.    
WED  
E WINDS 10 KT. SEAS 5 TO 6 FT.    
WED NIGHT  
NE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
THU  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
THU NIGHT  
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.  
 
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W  
   
TONIGHT  
N WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
SUN  
NE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
SUN NIGHT  
NE WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.    
MON  
E WINDS 15 TO 25 KT W OF 70W, AND NE 10 TO 20 KT  
ELSEWHERE. SEAS 7 TO 10 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
TUE  
E WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.    
TUE NIGHT  
SE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN  
10 KT AFTER MIDNIGHT. SEAS 5 TO 7 FT.    
WED  
SE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
WED NIGHT  
SE WINDS LESS THAN 10 KT IN THE EVENING, BECOMING  
VARIABLE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.    
THU  
NE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.    
THU NIGHT  
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
BAHAMAS N OF 22N  
   
TONIGHT  
N WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.    
SUN  
NE WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN  
THE AFTERNOON. SEAS 3 TO 4 FT.    
SUN NIGHT  
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
MON  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
MON NIGHT  
E WINDS 15 TO 25 KT. SEAS 6 TO 8 FT.    
TUE  
E WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.    
TUE NIGHT  
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
WED  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
WED NIGHT  
E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT  
AFTER MIDNIGHT. SEAS 3 TO 4 FT.    
THU  
NE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
THU NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.  
 
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS  
   
TONIGHT  
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT  
AFTER MIDNIGHT. SEAS 5 TO 7 FT.    
SUN  
N WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN THE  
AFTERNOON. SEAS 5 TO 7 FT.    
SUN NIGHT  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON  
E WINDS 15 TO 25 KT W OF 70W, AND NE 15 TO 25 KT  
ELSEWHERE. SEAS 7 TO 10 FT.    
MON NIGHT  
E WINDS 15 TO 25 KT. SEAS 8 TO 12 FT.    
TUE  
E WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.    
TUE NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
WED  
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
WED NIGHT  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
THU  
NE WINDS LESS THAN 10 KT. SEAS 5 TO 6 FT.    
THU NIGHT  
NE WINDS LESS THAN 10 KT. SEAS 5 FT.  
 
ATLC WATERS S OF 22N W OF 65W  
   
TONIGHT  
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT  
AFTER MIDNIGHT. 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 20 KT. SEAS 5 TO 7 FT.    
MON  
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
MON NIGHT  
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.    
TUE  
E WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.    
TUE NIGHT  
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
WED  
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
WED NIGHT  
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
THU  
E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 4 TO 6 FT.    
THU NIGHT  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W  
   
TONIGHT  
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
SUN  
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 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 6 TO 8 FT.    
TUE  
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
TUE NIGHT  
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.    
WED  
NE WINDS 10 TO 15 KT. SEAS 7 FT.    
WED NIGHT  
NE WINDS 10 TO 15 KT. SEAS 6 TO 7 FT.    
THU  
NE WINDS 10 KT. SEAS 6 TO 7 FT.    
THU NIGHT  
NE WINDS 10 KT. SEAS 5 TO 6 FT.  
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab TPC Page
Main Text Page