243
FZNT31 KNHC 120309
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
1109 PM EDT THU SEP 11 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 GRADIENT BETWEEN BROAD CENTRAL ATLANTIC HIGH
PRESSURE AND RELATIVELY LOWER PRESSURE IN THE CARIBBEAN WILL
LEAD TO FRESH TO LOCALLY STRONG TRADES IN THE SOUTH CENTRAL
CARIBBEAN THROUGH EARLY FRI, BEFORE DIMINISHING. THE ATLANTIC
HIGH PRESSURE WILL DRIFT SLOWLY NE INTO EARLY NEXT WEEK,
PRODUCING DIMINISHED TRADE WIND FLOW ACROSS THE ENTIRE BASIN FRI
NIGHT THROUGH EARLY NEXT WEEK.
NW CARIBBEAN W OF 85W
OVERNIGHT
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 TO 4 FT.
SAT
E WINDS LESS THAN 10 KT IN THE MORNING, BECOMING VARIABLE
WINDS LESS THAN 10 KT. SEAS 3 FT.
SAT NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SUN
VARIABLE WINDS LESS THAN 10 KT, BECOMING E LESS THAN
10 KT IN THE AFTERNOON. SEAS 3 TO 4 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
MON
E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
TUE
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
OVERNIGHT
E WINDS 10 TO 15 KT S OF 18N, AND E LESS THAN 10 KT
ELSEWHERE. SEAS 3 TO 5 FT.
FRI
S OF 18N, E WINDS 10 TO 15 KT, SEAS 4 TO 6 FT. ELSEWHERE,
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.
FRI NIGHT
S OF 18N, E WINDS 10 TO 15 KT. ELSEWHERE, VARIABLE
WINDS LESS THAN 10 KT, BECOMING NE LESS THAN 10 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT S OF 18N, AND 2 FT OR LESS ELSEWHERE.
SAT
E WINDS 10 TO 15 KT S OF 18N, AND VARIABLE LESS THAN
10 KT ELSEWHERE. SEAS 3 TO 5 FT S OF 18N, AND 2 FT OR LESS
ELSEWHERE.
SAT NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SUN
E WINDS 10 TO 15 KT. SEAS 3 FT.
SUN NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 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.
TUE
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
CARIBBEAN FROM 11N TO 15N W OF 72W
OVERNIGHT
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 10 TO 20 KT. SEAS 6 TO 8 FT.
FRI NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SAT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SAT NIGHT
E WINDS LESS THAN 10 KT, SHIFTING TO NE AFTER
MIDNIGHT. 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.
TUE
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
SW CARIBBEAN S OF 11N
OVERNIGHT
N WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
FRI
E WINDS LESS THAN 10 KT, SHIFTING TO SW IN THE AFTERNOON.
SEAS 4 TO 6 FT.
FRI NIGHT
W WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SAT
VARIABLE WINDS LESS THAN 10 KT, BECOMING SW LESS THAN
10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT.
SAT NIGHT
SW WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SUN
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SUN NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
MON
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
MON NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
TUE
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
TUE NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
CARIBBEAN BETWEEN 64W AND 72W
OVERNIGHT
E WINDS 20 TO 25 KT GULF OF VENEZUELA, AND E 10 TO
20 KT ELSEWHERE. SEAS 5 TO 7 FT.
FRI
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
FRI NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SAT
GULF OF VENEZUELA, E WINDS 10 TO 15 KT, SHIFTING TO SW IN
THE AFTERNOON. ELSEWHERE, 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 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.
TUE
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
TUE 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
OVERNIGHT
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 3 TO 5 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 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.
TUE
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
TUE 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
OVERNIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI
E TO 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
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 LESS THAN 10 KT. SEAS 3 TO 5 FT.
TUE
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
TUE NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
A STATIONARY FRONT EXTENDING FROM NEAR 31N73W TO
PALM BEACH, FLORIDA WILL BEGIN TO DRIFT SOUTHEASTWARD AS A WEAK
COLD FRONT REACHING FROM NEAR 31N72W TO THE NW BAHAMAS AND THE
STRAITS OF FLORIDA SAT NIGHT AND STALL. THE FRONT WILL GRADUALLY
WEAKEN THROUGH TUE. IT WILL CONTINUE TO BRING SHOWERS AND
THUNDERSTORMS TO WATERS NEAR FLORIDA AND THE BAHAMAS INTO THE
WEEKEND. MODERATE TO FRESH NE WINDS AND MODERATE SEAS ARE
EXPECTED N OF THE FRONT THROUGH SUN. TO THE EAST OF THE FRONT,
BROAD ATLANTIC HIGH PRESSURE WILL PERSIST E OF 70W ALLOWING FOR
GENTLE TO MODERATE ANTICYCLONIC FLOW AND MOSTLY MODERATE SEAS.
ATLC WATERS FROM 27N TO 31N W OF 77W
OVERNIGHT
NE WINDS LESS THAN 10 KT. SEAS 4 TO 6 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 15 KT. SEAS 5 TO 7 FT.
SAT NIGHT
NE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
SUN
N WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
SUN NIGHT
NE WINDS LESS THAN 10 KT, SHIFTING TO SE
LATE. SEAS 5 TO 7 FT.
MON
W WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
MON NIGHT
SW WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
TUE
W WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
TUE NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
OVERNIGHT
VARIABLE WINDS LESS THAN 10 KT W OF 70W, AND S
10 KT ELSEWHERE. SEAS 4 TO 5 FT.
FRI
SW WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
FRI NIGHT
VARIABLE WINDS LESS THAN 10 KT, BECOMING S LESS
THAN 10 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT.
SAT
S WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
SAT NIGHT
S WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
SUN
SW WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
SUN NIGHT
S WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
MON
S WINDS LESS THAN 10 KT IN THE MORNING, BECOMING VARIABLE
WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
MON NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
TUE
VARIABLE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
TUE NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
BAHAMAS N OF 22N
OVERNIGHT
SE WINDS LESS THAN 10 KT. SEAS 3 FT.
FRI
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.
FRI NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.
SAT
S 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, BECOMING S LESS
THAN 10 KT AFTER MIDNIGHT. SEAS 3 FT.
SUN
SW WINDS LESS THAN 10 KT IN THE MORNING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.
SUN NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.
MON
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 FT.
MON NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 FT.
TUE
E WINDS LESS THAN 10 KT. SEAS 3 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 3 FT.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
OVERNIGHT
VARIABLE WINDS LESS THAN 10 KT, BECOMING SE LESS
THAN 10 KT AFTER MIDNIGHT. SEAS 4 FT.
FRI
VARIABLE WINDS LESS THAN 10 KT. SEAS 4 FT.
FRI NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 4 FT.
SAT
VARIABLE WINDS LESS THAN 10 KT, BECOMING S LESS THAN
10 KT IN THE AFTERNOON. SEAS 4 FT.
SAT NIGHT
VARIABLE WINDS LESS THAN 10 KT, BECOMING S LESS
THAN 10 KT AFTER MIDNIGHT. SEAS 4 FT.
SUN
S WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
SUN NIGHT
S WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
MON
SE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
MON NIGHT
SE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
TUE
E WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
ATLC WATERS S OF 22N W OF 65W
OVERNIGHT
E WINDS LESS THAN 10 KT. 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 3 TO 4 FT.
SAT
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SAT NIGHT
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SUN
SE WINDS LESS THAN 10 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.
TUE
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
OVERNIGHT
E WINDS 10 KT. SEAS 4 TO 5 FT.
FRI
E WINDS 10 KT. SEAS 4 TO 5 FT.
FRI NIGHT
E WINDS 10 KT. SEAS 4 TO 5 FT.
SAT
E WINDS 10 KT. SEAS 4 TO 5 FT.
SAT NIGHT
SE WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
SUN
E WINDS 10 TO 15 KT. SEAS 5 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
MON
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
TUE
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 6 TO 7 FT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page