548  
FZNT31 KNHC 141450  
OFFN20  
 
MARINE WEATHER HF VOICE BROADCAST  
NWS NATIONAL HURRICANE CENTER MIAMI, FL  
1050 AM EDT THU AUG 14 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  
TROPICAL STORM ERIN IS NEAR 16.4N 49.7W AT 11 AM  
EDT, AND IS MOVING WEST AT 15 KT. MAXIMUM SUSTAINED WINDS ARE  
50 KT WITH GUSTS TO 60 KT, AND THE MINIMUM CENTRAL PRESSURE IS  
999 MB. ERIN WILL MOVE TO 16.9N 51.9W THIS EVENING, STRENGTHEN  
TO A HURRICANE NEAR 17.8N 55.0W FRI MORNING, 18.6N 57.9W FRI  
EVENING, 19.4N 60.7W SAT MORNING, 20.3N 63.1W SAT EVENING, AND  
21.3N 65.1W SUN MORNING. ERIN WILL CHANGE LITTLE IN INTENSITY AS  
IT MOVES TO 23.5N 68.0W BY EARLY MON. ELSEWHERE, STRONG WINDS  
AND ROUGH SEAS WILL CONTINUE OFFSHORE COLOMBIA AND VENEZUELA  
THROUGH EARLY THIS AFTERNOON DUE TO A TIGHT PRESSURE GRADIENT IN  
THE AREA.  
 
NW CARIBBEAN W OF 85W  
   
THIS AFTERNOON  
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
TONIGHT  
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.    
FRI  
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
FRI NIGHT  
NE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.    
SAT  
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.    
SAT NIGHT  
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.    
SUN  
NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.   
SUN NIGHT  
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.    
MON  
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.  
 
CARIBBEAN N OF 15N BETWEEN 72W AND 85W  
   
THIS AFTERNOON  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT S OF 18N,  
AND 2 FT OR LESS ELSEWHERE.    
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT S OF 18N, AND  
2 FT OR LESS ELSEWHERE.    
FRI  
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT S OF 18N, AND 2 FT OR  
LESS ELSEWHERE.    
FRI NIGHT  
E WINDS 10 TO 20 KT. SEAS 3 FT.    
SAT  
E WINDS 10 TO 20 KT. SEAS 3 FT.    
SAT NIGHT  
NE WINDS LESS THAN 10 KT S OF 18N, AND NE 10 TO  
20 KT ELSEWHERE. SEAS 2 FT OR LESS.    
SUN  
NE WINDS LESS THAN 10 KT S OF 18N, AND NE 10 TO 15 KT  
ELSEWHERE. SEAS 2 FT OR LESS.    
SUN NIGHT  
NE WINDS LESS THAN 10 KT S OF 18N, AND NE 10 TO  
15 KT ELSEWHERE. SEAS 2 FT OR LESS.    
MON  
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.  
 
CARIBBEAN FROM 11N TO 15N W OF 72W  
   
THIS AFTERNOON  
E WINDS 10 TO 20 KT WITHIN 90 NM OF COAST OF  
COLOMBIA, AND E 15 TO 25 KT ELSEWHERE. SEAS 5 TO 7 FT.    
TONIGHT  
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
FRI  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
FRI NIGHT  
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT  
NE WINDS 10 TO 15 KT, SHIFTING TO E IN THE AFTERNOON.  
SEAS 3 TO 4 FT.    
SAT NIGHT  
NE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
SUN  
E WINDS LESS THAN 10 KT. SEAS 3 FT.    
SUN NIGHT  
E WINDS LESS THAN 10 KT. SEAS 3 FT IN THE EVENING,  
SUBSIDING TO 2 FT OR LESS.    
MON  
SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.  
 
SW CARIBBEAN S OF 11N  
   
THIS AFTERNOON  
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
TONIGHT  
N WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.    
FRI  
NE WINDS 10 TO 20 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 3 TO 5 FT.    
FRI NIGHT  
N WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
SAT  
W WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.    
SAT NIGHT  
NW WINDS LESS THAN 10 KT. SEAS 3 FT.    
SUN  
W WINDS LESS THAN 10 KT. SEAS 3 FT.    
SUN NIGHT  
W WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.    
MON  
SW WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.  
 
CARIBBEAN BETWEEN 64W AND 72W  
   
THIS AFTERNOON  
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT.    
TONIGHT  
NE WINDS 15 TO 20 KT GULF OF VENEZUELA, AND E 10 TO  
20 KT ELSEWHERE. SEAS 3 TO 4 FT.    
FRI  
E WINDS 10 TO 20 KT. SEAS 2 FT OR LESS GULF OF VENEZUELA,  
AND 3 TO 5 FT ELSEWHERE.    
FRI NIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
SAT  
NE WINDS LESS THAN 10 KT GULF OF VENEZUELA, AND E 10 TO  
15 KT ELSEWHERE. SEAS 2 FT OR LESS GULF OF VENEZUELA, AND 3 TO  
4 FT ELSEWHERE.    
SAT NIGHT  
NE WINDS LESS THAN 10 KT GULF OF VENEZUELA, AND E  
10 TO 15 KT ELSEWHERE. SEAS 3 FT.    
SUN  
VARIABLE WINDS LESS THAN 10 KT GULF OF VENEZUELA, AND S  
10 TO 15 KT ELSEWHERE. SEAS 2 FT OR LESS GULF OF VENEZUELA, AND  
3 FT ELSEWHERE.    
SUN NIGHT  
NE WINDS LESS THAN 10 KT GULF OF VENEZUELA, AND S  
10 TO 15 KT ELSEWHERE. SEAS 2 FT OR LESS GULF OF VENEZUELA, AND  
3 FT ELSEWHERE.    
MON  
GULF OF VENEZUELA, VARIABLE WINDS LESS THAN 10 KT,  
BECOMING NW LESS THAN 10 KT IN THE AFTERNOON. ELSEWHERE, SE  
WINDS 10 TO 15 KT. SEAS 2 FT OR LESS GULF OF VENEZUELA, AND 3 TO  
4 FT ELSEWHERE.  
 
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO  
19N W OF 55W  
   
..HURRICANE WARNING  
 
   
THIS AFTERNOON  
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.    
TONIGHT  
TROPICAL STORM CONDITIONS POSSIBLE. NE WINDS 10 TO  
20 KT. SEAS 4 TO 6 FT.    
FRI  
TROPICAL STORM CONDITIONS EXPECTED. N WINDS 45 TO 55 KT,  
INCREASING TO 60 TO 70 KT IN THE AFTERNOON. SEAS 5 TO 7 FT.    
FRI NIGHT  
TROPICAL STORM CONDITIONS EXPECTED. W WINDS 65 TO  
80 KT. SEAS 5 TO 7 FT.    
SAT  
HURRICANE CONDITIONS POSSIBLE. SW WINDS 40 TO 50 KT,  
BECOMING S 15 TO 25 KT IN THE AFTERNOON. SEAS 5 TO 7 FT.    
SAT NIGHT  
HURRICANE CONDITIONS POSSIBLE.    
SUN  
TROPICAL STORM CONDITIONS POSSIBLE.    
SUN NIGHT  
SE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.    
MON  
SE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.  
 
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO  
15N W OF 55W  
   
THIS AFTERNOON  
SE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN  
10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT.    
TONIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
FRI  
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
FRI NIGHT  
S WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT  
AFTER MIDNIGHT. SEAS 3 TO 5 FT.    
SAT  
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
SAT NIGHT  
SE 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 4 FT.    
MON  
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.  
 
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS  
   
SYNOPSIS  
TROPICAL STORM ERIN IS NEAR 16.4N 49.7W AT 11 AM  
EDT, AND IS MOVING WEST AT 15 KT. MAXIMUM SUSTAINED WINDS ARE 50  
KT WITH GUSTS TO 60 KT, AND THE MINIMUM CENTRAL PRESSURE IS 999  
MB. ERIN WILL MOVE TO 16.9N 51.9W THIS EVENING, STRENGTHEN TO A  
HURRICANE NEAR 17.8N 55.0W FRI MORNING, 18.6N 57.9W FRI EVENING,  
19.4N 60.7W SAT MORNING, 20.3N 63.1W SAT EVENING, AND 21.3N 65.1W  
SUN MORNING. ERIN WILL CHANGE LITTLE IN INTENSITY AS IT MOVES TO  
23.5N 68.0W BY EARLY MON. ELSEWHERE, A WEAK PRESSURE GRADIENT  
WILL RESULT IN GENTLE TO MODERATE WINDS AND MAINLY SLIGHT SEAS  
INTO THE WEEKEND.  
 
ATLC WATERS FROM 27N TO 31N W OF 77W  
   
THIS AFTERNOON  
SW WINDS 10 TO 15 KT. SEAS 3 FT.    
TONIGHT  
S WINDS 10 TO 15 KT. SEAS 3 FT.    
FRI  
SW WINDS 10 TO 15 KT. SEAS 3 FT.    
FRI NIGHT  
S WINDS 10 KT. SEAS 3 FT IN THE EVENING, SUBSIDING  
TO 2 FT OR LESS.    
SAT  
S WINDS LESS THAN 10 KT, SHIFTING TO NW IN THE AFTERNOON.  
SEAS 2 FT OR LESS.    
SAT NIGHT  
NE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.    
SUN  
N WINDS LESS THAN 10 KT. SEAS 3 FT.    
SUN NIGHT  
NE WINDS 10 KT. SEAS 3 TO 4 FT.    
MON  
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.  
 
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W  
   
THIS AFTERNOON  
SW WINDS LESS THAN 10 KT. SEAS 3 FT.    
TONIGHT  
SE WINDS LESS THAN 10 KT. SEAS 3 FT.    
FRI  
S WINDS LESS THAN 10 KT. SEAS 3 FT.    
FRI NIGHT  
SE WINDS LESS THAN 10 KT. SEAS 3 FT.   
SAT  
W OF 70W, SE WINDS LESS THAN 10 KT. N IN THE AFTERNOON.  
ELSEWHERE, NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
SAT NIGHT  
N WINDS LESS THAN 10 KT W OF 70W, AND NE 10 TO  
15 KT ELSEWHERE. SEAS 3 FT W OF 70W, AND 4 TO 6 FT ELSEWHERE.    
SUN  
NW WINDS LESS THAN 10 KT W OF 70W, AND SE 10 TO 15 KT  
ELSEWHERE. SEAS 3 TO 5 FT W OF 70W, AND 5 TO 7 FT ELSEWHERE.    
SUN NIGHT  
TROPICAL STORM CONDITIONS POSSIBLE.    
MON  
HURRICANE CONDITIONS POSSIBLE.  
 
BAHAMAS N OF 22N  
   
THIS AFTERNOON  
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.    
TONIGHT  
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.    
FRI  
E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN  
THE AFTERNOON. SEAS 2 FT OR LESS.    
FRI NIGHT  
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.    
SAT  
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.    
SAT NIGHT  
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.    
SUN  
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.    
SUN NIGHT  
NE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS, BUILDING  
TO 3 FT AFTER MIDNIGHT.    
MON  
TROPICAL STORM CONDITIONS POSSIBLE.  
 
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS  
   
THIS AFTERNOON  
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.    
TONIGHT  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
FRI  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
FRI NIGHT  
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.    
SAT  
TROPICAL STORM CONDITIONS POSSIBLE. NE WINDS 10 TO  
20 KT. SEAS 4 TO 6 FT.    
SAT NIGHT  
HURRICANE CONDITIONS POSSIBLE.    
SUN  
HURRICANE CONDITIONS POSSIBLE.    
SUN NIGHT  
HURRICANE CONDITIONS POSSIBLE.    
MON  
HURRICANE CONDITIONS POSSIBLE.  
 
ATLC WATERS S OF 22N W OF 65W  
   
THIS AFTERNOON  
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.    
TONIGHT  
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.    
FRI  
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.    
FRI NIGHT  
NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.    
SAT  
TROPICAL STORM CONDITIONS POSSIBLE. NE WINDS 10 TO  
20 KT. SEAS 4 TO 6 FT.    
SAT NIGHT  
HURRICANE CONDITIONS POSSIBLE.    
SUN  
HURRICANE CONDITIONS POSSIBLE.    
SUN NIGHT  
HURRICANE CONDITIONS POSSIBLE.    
MON  
HURRICANE CONDITIONS POSSIBLE.  
 
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W  
   
..HURRICANE WARNING  
 
   
THIS AFTERNOON  
E WINDS 10 TO 20 KT. SEAS 5 TO 6 FT.    
TONIGHT  
TROPICAL STORM CONDITIONS POSSIBLE. NE WINDS 15 TO  
25 KT. SEAS 5 TO 7 FT.    
FRI  
TROPICAL STORM CONDITIONS EXPECTED. NE WINDS 20 TO  
30 KT, INCREASING TO 30 TO 40 KT IN THE AFTERNOON. SEAS 7 TO  
10 FT.    
FRI NIGHT  
TROPICAL STORM CONDITIONS EXPECTED. NE WINDS 45 TO  
55 KT, BECOMING E 70 TO 80 KT AFTER MIDNIGHT. SEAS 8 TO 11 FT,  
BUILDING TO 9 TO 14 FT AFTER MIDNIGHT.    
SAT  
HURRICANE CONDITIONS POSSIBLE. E WINDS 70 TO 80 KT,  
BECOMING SE 80 TO 90 KT IN THE AFTERNOON. SEAS 11 TO 16 FT.    
SAT NIGHT  
HURRICANE CONDITIONS POSSIBLE.    
SUN  
HURRICANE CONDITIONS POSSIBLE.    
SUN NIGHT  
HURRICANE CONDITIONS POSSIBLE.    
MON  
TROPICAL STORM CONDITIONS POSSIBLE.  
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