640
FZNT31 KNHC 101913
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
313 PM EDT WED SEP 10 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 THE ATLANTIC RIDGE AND
THE COLOMBIAN LOW WILL LEAD TO FRESH TO LOCALLY STRONG WINDS IN
THE SOUTH CENTRAL CARIBBEAN THROUGH FRIDAY, ALONG WITH MODERATE
TO LOCALLY ROUGH SEAS. ELSEWHERE, MAINLY MODERATE WINDS WITH SLIGHT
TO MODERATE SEAS ARE EXPECTED.
NW CARIBBEAN W OF 85W
TONIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
THU
E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 3 TO 4 FT.
THU NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 FT.
FRI
NE WINDS LESS THAN 10 KT. SEAS 3 FT IN THE MORNING,
SUBSIDING TO 2 FT OR LESS.
FRI NIGHT
NE WINDS LESS THAN 10 KT. SEAS 3 FT.
SAT
E WINDS LESS THAN 10 KT IN THE MORNING, BECOMING VARIABLE
WINDS LESS THAN 10 KT. SEAS 3 FT IN THE MORNING, SUBSIDING TO
2 FT OR LESS.
SAT NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 FT.
SUN
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
SUN NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS, BUILDING
TO 3 TO 4 FT AFTER MIDNIGHT.
MON
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
MON NIGHT
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
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 20 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 NIGHT
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.
FRI
S OF 18N, E WINDS 10 TO 15 KT. ELSEWHERE, E WINDS LESS
THAN 10 KT IN THE MORNING, BECOMING VARIABLE WINDS LESS THAN
10 KT. SEAS 4 TO 6 FT S OF 18N, AND 2 FT OR LESS ELSEWHERE.
FRI NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SAT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SAT NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 FT.
SUN
E WINDS 10 TO 15 KT. SEAS 3 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 3 FT.
MON
E WINDS 10 TO 15 KT. SEAS 3 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 3 FT.
CARIBBEAN FROM 11N TO 15N W OF 72W
TONIGHT
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 WITHIN
90 NM OF COAST OF COLOMBIA, AND 4 TO 6 FT ELSEWHERE.
THU
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.
THU NIGHT
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.
FRI
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
FRI NIGHT
E WINDS 10 TO 15 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 4 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
MON
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
MON NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
SW CARIBBEAN S OF 11N
TONIGHT
N WINDS LESS THAN 10 KT, SHIFTING TO NE AFTER
MIDNIGHT. SEAS 3 TO 5 FT.
THU
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 4 TO 6 FT.
THU NIGHT
N WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
FRI
NE WINDS LESS THAN 10 KT, SHIFTING TO SW IN THE
AFTERNOON. SEAS 3 TO 5 FT.
FRI NIGHT
W WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SAT
NW WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SAT NIGHT
W WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SUN
SW WINDS LESS THAN 10 KT IN THE MORNING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SUN NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT IN THE
EVENING, SUBSIDING TO 2 FT OR LESS.
MON
VARIABLE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
MON NIGHT
N WINDS LESS THAN 10 KT. SEAS 3 FT.
CARIBBEAN BETWEEN 64W AND 72W
TONIGHT
NE WINDS 15 TO 25 KT GULF OF VENEZUELA, AND E 10 TO
20 KT ELSEWHERE. SEAS 5 TO 7 FT.
THU
GULF OF VENEZUELA, E WINDS 20 TO 25 KT, DIMINISHING TO
10 TO 20 KT IN THE AFTERNOON. ELSEWHERE, E WINDS 10 TO 20 KT.
SEAS 3 TO 5 FT GULF OF VENEZUELA, AND 5 TO 7 FT ELSEWHERE.
THU NIGHT
E 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 3 TO 4 FT GULF OF VENEZUELA,
AND 4 TO 6 FT ELSEWHERE.
FRI NIGHT
E WINDS 10 TO 15 KT. SEAS 3 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 4 FT.
SUN
E WINDS 10 TO 15 KT. SEAS 3 TO 4 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.
MON 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 4 TO 6 FT.
THU
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
THU NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
FRI
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
FRI NIGHT
E WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 3 TO 4 FT.
SAT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 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.
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO
15N W OF 55W
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 3 TO 5 FT.
FRI
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
FRI NIGHT
E WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 3 TO 4 FT.
SAT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SUN
E WINDS 10 TO 15 KT. SEAS 3 TO 4 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.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
A STATIONARY FRONT LOCATED JUST OFFSHORE NE FLORIDA
WILL TRANSITION TO A COLD FRONT THU AND MOVE SE, LIKELY REACHING
THE NW BAHAMAS AND SOUTH FLORIDA BY FRIDAY, BEFORE STALLING
AGAIN, AND DISSIPATING THIS UPCOMING WEEKEND. THE FRONT WILL
CONTINUE TO BRING SHOWERS AND THUNDERSTORMS TO WATERS NEAR
FLORIDA AND THE NORTHWEST BAHAMAS THROUGH THE WEEK. MODERATE TO
FRESH N TO NE WINDS AND MODERATE TO ROUGH SEAS ARE EXPECTED N OF
THE FRONT THROUGH SAT. AHEAD OF THE FRONT, THE ATLANTIC RIDGE
WILL CONTINUE TO DOMINATE THE WEATHER PATTERN ACROSS THE FORECAST
REGION THIS WEEK, PRODUCING A GENTLE TO MODERATE ANTICYCLONIC
FLOW AND MOSTLY MODERATE SEAS.
ATLC WATERS FROM 27N TO 31N W OF 77W
TONIGHT
N WINDS 10 TO 15 KT, SHIFTING TO NE AFTER MIDNIGHT.
SEAS 4 TO 6 FT.
THU
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
THU NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
FRI NIGHT
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SAT
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SAT NIGHT
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SUN
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SUN NIGHT
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
MON
NE WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
TONIGHT
S WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
THU
S WINDS LESS THAN 10 KT. SEAS 4 FT.
THU NIGHT
S WINDS LESS THAN 10 KT. SEAS 4 FT.
FRI
W WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
FRI NIGHT
NW WINDS LESS THAN 10 KT, SHIFTING TO S AFTER
MIDNIGHT. SEAS 3 TO 5 FT.
SAT
N WINDS LESS THAN 10 KT, SHIFTING TO SE IN THE AFTERNOON.
SEAS 3 TO 5 FT.
SAT NIGHT
SE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SUN
SW WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
SUN NIGHT
SE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
MON
S WINDS LESS THAN 10 KT, SHIFTING TO N IN THE AFTERNOON.
SEAS 4 TO 5 FT.
MON NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
BAHAMAS N OF 22N
TONIGHT
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
THU
SE WINDS LESS THAN 10 KT IN THE MORNING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
THU NIGHT
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
FRI
SE WINDS LESS THAN 10 KT IN THE MORNING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
FRI NIGHT
VARIABLE WINDS LESS THAN 10 KT, BECOMING E LESS
THAN 10 KT AFTER MIDNIGHT. SEAS 2 FT OR LESS.
SAT
SE WINDS LESS THAN 10 KT IN THE MORNING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
SAT NIGHT
E WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
SUN
SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
SUN NIGHT
VARIABLE 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 LESS THAN 10 KT. SEAS 2 FT OR LESS.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
TONIGHT
SE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
THU
S WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
THU NIGHT
VARIABLE WINDS LESS THAN 10 KT, BECOMING SE LESS
THAN 10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT.
FRI
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
FRI NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.
SAT
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.
SAT NIGHT
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SUN
S 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
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
ATLC WATERS S OF 22N W OF 65W
TONIGHT
E WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 3 TO 5 FT.
THU
SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
THU NIGHT
E WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 3 TO 4 FT.
FRI
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
FRI NIGHT
SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
SAT
SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
SAT NIGHT
SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS.
SUN
SE WINDS 10 TO 15 KT. SEAS 3 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 3 FT.
MON
E WINDS 10 TO 15 KT. SEAS 3 FT.
MON 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 10 TO 15 KT. SEAS 4 TO 5 FT.
THU
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
THU NIGHT
E WINDS 10 KT. SEAS 4 FT.
FRI
E WINDS 10 KT. SEAS 4 FT.
FRI NIGHT
E WINDS 10 KT. SEAS 3 TO 4 FT.
SAT
E WINDS 10 KT. SEAS 3 TO 4 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
SUN
E WINDS 10 TO 15 KT. SEAS 4 TO 5 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.
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