000
FZNT31 KNHC 240817
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
417 AM EDT THU JUL 24 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 THE COLOMBIAN LOW COMBINED WITH A TROPICAL WAVE PASSAGE WILL
SUPPORT FRESH TO STRONG WINDS OVER THE EAST/CENTRAL CARIBBEAN
THROUGH THE END OF THE WEEK. FRESH TO STRONG NORTHEAST WINDS AND
MODERATE TO ROUGH SEAS IN THE WINDWARD PASSAGE ARE EXPECTED
THROUGH THE END OF THE WEEK. ELSEWHERE, MODERATE TO FRESH WINDS
WILL PREVAIL.
NW CARIBBEAN W OF 85W
TODAY
E WINDS LESS THAN 10 KT. SEAS 3 FT.
TONIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
FRI
E WINDS 10 TO 15 KT. SEAS 3 TO 5 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 20 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 5 FT.
MON
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
TODAY
E WINDS 10 TO 20 KT S OF 18N, AND E LESS THAN 10 KT
ELSEWHERE. SEAS 5 TO 7 FT S OF 18N, AND 3 TO 4 FT ELSEWHERE.
TONIGHT
S OF 18N, E WINDS 10 TO 20 KT. ELSEWHERE, E WINDS
LESS THAN 10 KT, INCREASING TO 10 TO 15 KT AFTER MIDNIGHT. SEAS
6 TO 8 FT S OF 18N, AND 3 TO 5 FT ELSEWHERE.
FRI
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT S OF 18N, AND 4 TO
6 FT ELSEWHERE.
FRI NIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT S OF 18N, AND
4 TO 6 FT ELSEWHERE.
SAT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SAT NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SUN
E WINDS 10 TO 20 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 3 TO 5 FT.
CARIBBEAN FROM 11N TO 15N W OF 72W
TODAY
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
TONIGHT
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.
FRI
E WINDS 15 TO 25 KT. SEAS 6 TO 8 FT.
FRI NIGHT
E WINDS 15 TO 25 KT WITHIN 90 NM OF COAST OF
COLOMBIA, AND E 10 TO 20 KT ELSEWHERE. SEAS 6 TO 9 FT.
SAT
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
SAT NIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
SUN
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
MON
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
MON NIGHT
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SW CARIBBEAN S OF 11N
TODAY
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 4 TO 6 FT.
TONIGHT
N WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 4 TO 6 FT.
FRI
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
FRI NIGHT
NE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
SAT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SAT NIGHT
NE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
SUN
S WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
SUN NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
MON
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
MON NIGHT
N WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
CARIBBEAN BETWEEN 64W AND 72W
TODAY
E WINDS 10 TO 20 KT. SEAS 3 TO 4 FT GULF OF VENEZUELA,
AND 5 TO 7 FT ELSEWHERE.
TONIGHT
E WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.
FRI
E WINDS 15 TO 25 KT GULF OF VENEZUELA, AND E 10 TO 20 KT
ELSEWHERE. SEAS 5 TO 7 FT.
FRI NIGHT
E WINDS 15 TO 25 KT GULF OF VENEZUELA, AND E 10 TO
20 KT ELSEWHERE. SEAS 5 TO 7 FT.
SAT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SAT NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SUN
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
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 4 TO 6 FT.
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO
19N W OF 55W
TODAY
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
TONIGHT
E WINDS 10 TO 15 KT. SEAS 5 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 15 KT. SEAS 4 TO 6 FT.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
MON
E WINDS 10 TO 20 KT. SEAS 5 TO 7 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 4 TO 6 FT.
TONIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 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
E WINDS 10 TO 15 KT. SEAS 3 TO 5 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.
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.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
HIGH PRESSURE WILL DOMINATE THE WEATHER PATTERN
ACROSS THE FORECAST REGION. N OF HISPANIOLA, INCLUDING THE
APPROACHES TO THE WINDWARD PASSAGE, FRESH TO STRONG WINDS AND
MODERATE SEAS ARE EXPECTED THROUGH THE END OF THE WEEK.
ELSEWHERE, GENTLE TO MODERATE ANTICYCLONIC FLOW ALONG WITH
MOSTLY MODERATE SEAS ARE EXPECTED. A FRONTAL BOUNDARY IS
FORECAST TO REACH THE NE WATERS TOWARD THE END OF THE WORK-WEEK
AND DISSIPATE, WITH LITTLE CHANGE EXPECTED IN WINDS AND SEAS.
ATLC WATERS FROM 27N TO 31N W OF 77W
TODAY
SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
TONIGHT
SE WINDS 10 KT. SEAS 3 TO 4 FT.
FRI
S WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
FRI NIGHT
S WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SAT
SW WINDS LESS THAN 10 KT IN THE MORNING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.
SAT NIGHT
VARIABLE 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 S LESS
THAN 10 KT AFTER MIDNIGHT. SEAS 2 FT OR LESS.
MON
SW WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
MON NIGHT
S WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 2 FT OR LESS, BUILDING TO 3 FT AFTER
MIDNIGHT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
TODAY
SW WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
TONIGHT
W OF 70W, S WINDS LESS THAN 10 KT IN THE EVENING,
BECOMING VARIABLE WINDS LESS THAN 10 KT. ELSEWHERE, N WINDS
10 TO 15 KT. SEAS 3 TO 4 FT.
FRI
W OF 70W, VARIABLE WINDS LESS THAN 10 KT, BECOMING NW
LESS THAN 10 KT IN THE AFTERNOON. ELSEWHERE, N WINDS 10 KT. SEAS
3 TO 4 FT.
FRI NIGHT
N WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SAT
N WINDS LESS THAN 10 KT. SEAS 3 FT.
SAT NIGHT
NE 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. SEAS 3 FT.
MON
SW WINDS LESS THAN 10 KT. SEAS 3 FT.
MON NIGHT
SW WINDS LESS THAN 10 KT. SEAS 3 FT.
BAHAMAS N OF 22N
TODAY
SE 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 15 KT. SEAS 3 TO 5 FT.
FRI NIGHT
E WINDS 10 TO 15 KT. SEAS 3 FT.
SAT
E WINDS 10 TO 15 KT. SEAS 3 FT.
SAT NIGHT
E WINDS 10 TO 15 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.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
TODAY
W OF 70W, SE WINDS 10 TO 15 KT. ELSEWHERE, E WINDS
10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN THE AFTERNOON.
SEAS 4 TO 6 FT.
TONIGHT
W OF 70W, E WINDS 10 TO 15 KT. ELSEWHERE, NE WINDS
LESS THAN 10 KT, INCREASING TO 10 TO 15 KT AFTER MIDNIGHT. SEAS
4 TO 5 FT.
FRI
W OF 70W, E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN
10 KT IN THE AFTERNOON. ELSEWHERE, N WINDS LESS THAN 10 KT. SEAS
3 TO 5 FT.
FRI NIGHT
NE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SAT
NE WINDS LESS THAN 10 KT IN THE MORNING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SAT NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 FT.
SUN
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SUN NIGHT
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
MON
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
MON NIGHT
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
ATLC WATERS S OF 22N W OF 65W
TODAY
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
TONIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
FRI
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
FRI NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 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 5 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
MON
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
TODAY
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
TONIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
FRI
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
FRI NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
SAT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
SUN
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
MON
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
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