960  
FZNT31 KNHC 301350  
OFFN20  
 
MARINE WEATHER HF VOICE BROADCAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
950 AM EDT WED JUL 30 2025  
 
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
 
THE PRESSURE GRADIENT BETWEEN ATLANTIC HIGH PRESSURE  
AND LOWER PRESSURE OVER COLOMBIA WILL SUPPORT FRESH WINDS AND  
ROUGH SEAS OVER THE CENTRAL CARIBBEAN THROUGH SAT, WITH WINDS  
PULSING TO STRONG OFF THE COAST OF COLOMBIA. GENERALLY MODERATE  
WINDS AND SEAS WILL PREVAIL ELSEWHERE. A TROPICAL WAVE  
ACCOMPANIED BY SCATTERED SHOWERS AND THUNDERSTORMS IS EXPECTED  
TO MOVE THROUGH THE TROPICAL ATLANTIC WATERS FRI THROUGH EARLY  
SAT AND THROUGH THE EASTERN CARIBBEAN LATER ON SAT AND THROUGH  
SUN, REACHING THE CENTRAL CARIBBEAN LATE SUN.  
 
NW CARIBBEAN W OF 85W  
   
THIS AFTERNOON
 
E WINDS LESS THAN 10 KT. SEAS 3 FT.    
TONIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
THU
 
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
THU NIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
FRI
 
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
FRI NIGHT
 
E WINDS LESS THAN 10 KT. SEAS 3 FT.    
SAT
 
E WINDS LESS THAN 10 KT. SEAS 3 FT.    
SAT NIGHT
 
E WINDS LESS THAN 10 KT. SEAS 3 FT.    
SUN
 
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.    
SUN NIGHT
 
VARIABLE WINDS LESS THAN 10 KT, BECOMING E LESS  
THAN 10 KT LATE. SEAS 2 FT OR LESS.  
 
CARIBBEAN N OF 15N BETWEEN 72W AND 85W  
   
THIS AFTERNOON
 
E WINDS 10 TO 15 KT S OF 18N, AND E LESS THAN  
10 KT ELSEWHERE. SEAS 4 TO 6 FT S OF 18N, AND 2 FT OR LESS  
ELSEWHERE.    
TONIGHT
 
E WINDS 10 TO 15 KT S OF 18N, AND E LESS THAN 10 KT  
ELSEWHERE. SEAS 4 TO 6 FT S OF 18N, AND 2 FT OR LESS ELSEWHERE.    
THU
 
E WINDS 10 TO 15 KT S OF 18N, AND E LESS THAN 10 KT  
ELSEWHERE. S OF 18N, SEAS 4 TO 6 FT. ELSEWHERE, SEAS 2 FT OR  
LESS, BUILDING TO 3 FT IN THE AFTERNOON.    
THU NIGHT
 
S OF 18N, E WINDS 10 TO 15 KT, SEAS 4 TO 6 FT.  
ELSEWHERE, E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.   
FRI
 
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT NIGHT
 
NE 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 4 TO 6 FT.  
 
CARIBBEAN FROM 11N TO 15N W OF 72W  
   
THIS AFTERNOON
 
E WINDS 15 TO 25 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND E 10 TO 20 KT ELSEWHERE. SEAS 5 TO 7 FT.    
TONIGHT
 
NE WINDS 15 TO 25 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND E 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 E 10 TO 20 KT ELSEWHERE. SEAS 6 TO 8 FT.    
THU NIGHT
 
NE WINDS 15 TO 25 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND NE 10 TO 20 KT ELSEWHERE. SEAS 6 TO 8 FT.    
FRI
 
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
FRI NIGHT
 
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
SAT
 
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.    
SAT NIGHT
 
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
SUN
 
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SUN NIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
SW CARIBBEAN S OF 11N  
   
THIS AFTERNOON
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.   
TONIGHT
 
NE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.   
THU
 
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 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
 
N WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.   
SAT
 
N WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.    
SAT NIGHT
 
NE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.    
SUN
 
NE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.    
SUN NIGHT
 
NW WINDS LESS THAN 10 KT IN THE EVENING, BECOMING  
VARIABLE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.  
 
CARIBBEAN BETWEEN 64W AND 72W  
   
THIS AFTERNOON
 
E WINDS 15 TO 20 KT GULF OF VENEZUELA, AND E  
10 TO 15 KT ELSEWHERE. SEAS 3 TO 5 FT.    
TONIGHT
 
NE WINDS 15 TO 25 KT GULF OF VENEZUELA, AND E 10 TO  
20 KT ELSEWHERE. SEAS 3 TO 5 FT.    
THU
 
GULF OF VENEZUELA, NE TO E WINDS 15 TO 25 KT, BECOMING  
NE 10 TO 15 KT IN THE AFTERNOON. ELSEWHERE, E WINDS 10 TO 20 KT.  
SEAS 3 TO 5 FT.    
THU NIGHT
 
NE WINDS 15 TO 25 KT GULF OF VENEZUELA, AND E 10 TO  
20 KT ELSEWHERE. SEAS 4 TO 6 FT.    
FRI
 
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
FRI NIGHT
 
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
SAT
 
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
SAT NIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN
 
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
SUN 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  
   
THIS AFTERNOON
 
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.    
TONIGHT
 
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 20 KT. SEAS 5 TO 7 FT.    
FRI
 
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.    
SAT
 
SE WINDS 10 TO 15 KT. SEAS 5 TO 7 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 3 TO 5 FT.  
 
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO  
15N W OF 55W  
   
THIS AFTERNOON
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
TONIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.   
THU
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
THU NIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
FRI
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT
 
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT NIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SUN
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SUN NIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.  
 
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS  
   
SYNOPSIS
 
HIGH PRESSURE WILL DOMINATE THE WEATHER PATTERN  
ACROSS THE FORECAST THROUGH THE PERIOD, SUPPORTING MOSTLY GENTLE  
TO MODERATE WINDS AND SLIGHT TO MODERATE SEAS OVER THE REGION.  
THE NORTHERN PORTION OF A TROPICAL WAVE MAY BRING FRESH TO  
LOCALLY STRONG EAST TO SOUTHEAST WINDS AND ROUGH SEAS NORTH OF  
THE LEEWARD ISLANDS FRI THROUGH SAT NIGHT, THEN POSSIBLY TO THE  
WATERS NORTH OF HISPANIOLA AND EAST OF THE SOUTHERN BAHAMAS SUN  
AND SUN NIGHT.  
 
ATLC WATERS FROM 27N TO 31N W OF 77W  
   
THIS AFTERNOON
 
SW WINDS 10 KT. SEAS 2 FT OR LESS.    
TONIGHT
 
S WINDS 10 KT. SEAS 2 FT OR LESS.    
THU
 
SW WINDS 10 KT. SEAS 2 TO 3 FT.   
THU NIGHT
 
S WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.   
FRI
 
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
FRI NIGHT
 
S WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
SAT
 
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
SAT NIGHT
 
SW WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
SUN
 
SW WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
SUN NIGHT
 
S WINDS 10 KT. SEAS 3 TO 4 FT.  
 
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W  
   
THIS AFTERNOON
 
W WINDS LESS THAN 10 KT W OF 70W, AND VARIABLE  
LESS THAN 10 KT ELSEWHERE. SEAS 3 FT.    
TONIGHT
 
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.    
THU
 
VARIABLE WINDS LESS THAN 10 KT, BECOMING SW LESS THAN  
10 KT IN THE AFTERNOON. SEAS 3 FT.    
THU NIGHT
 
S WINDS LESS THAN 10 KT. SEAS 3 FT.    
FRI
 
S WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
FRI NIGHT
 
S WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
SAT
 
SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT NIGHT
 
SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SUN
 
SW WINDS 10 KT. SEAS 3 TO 5 FT.    
SUN NIGHT
 
S WINDS 10 KT. SEAS 3 TO 5 FT.  
 
BAHAMAS N OF 22N  
   
THIS AFTERNOON
 
SE WINDS LESS THAN 10 KT. SEAS 2 TO 4 FT.   
TONIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.   
THU
 
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
THU NIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
FRI
 
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.   
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.   
SAT
 
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.   
SAT NIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.   
SUN
 
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.   
SUN NIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.  
 
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS  
   
THIS AFTERNOON
 
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
TONIGHT
 
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
THU
 
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
THU NIGHT
 
W OF 70W, E TO SE WINDS LESS THAN 10 KT, SHIFTING  
TO SE LATE. ELSEWHERE, SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.   
FRI
 
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
FRI NIGHT
 
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT
 
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SAT NIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN
 
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN NIGHT
 
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
ATLC WATERS S OF 22N W OF 65W  
   
THIS AFTERNOON
 
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
TONIGHT
 
E WINDS 10 TO 15 KT. SEAS 3 TO 4 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.    
FRI
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
FRI NIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 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 6 FT.    
SUN
 
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
SUN NIGHT
 
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W  
   
THIS AFTERNOON
 
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.    
TONIGHT
 
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.    
THU
 
E WINDS 15 KT. SEAS 5 TO 6 FT.    
THU NIGHT
 
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
FRI
 
E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT.    
FRI NIGHT
 
E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT.    
SAT
 
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.    
SAT NIGHT
 
E WINDS 10 TO 15 KT. SEAS 6 TO 8 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.  
 
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