163
FZNT31 KNHC 150913
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
513 AM EDT MON SEP 15 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
A TROPICAL WAVE ALONG 70W WILL MOVE ACROSS THE
CENTRAL CARIBBEAN THROUGH TUE, AND THROUGH THE WESTERN CARIBBEAN
TUE NIGHT THROUGH THU NIGHT. EXPECT FRESH WINDS OVER THE CENTRAL
CARIBBEAN MON THROUGH TUE IN THE WAKE OF THE TROPICAL WAVE.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL ACCOMPANY THE
WAVE. ANOTHER TROPICAL WAVE IS EXPECTED TO ENTER THE EASTERN
CARIBBEAN TUE OR WED. FRESH TO STRONG WINDS WILL PULSE IN THE
S-CENTRAL WATERS THROUGH MID-WEEK. OTHERWISE, GENTLE TO MODERATE
TRADES, AND MOSTLY MODERATE SEAS WILL REMAIN THROUGH THE WEEK,
EXCEPT SLIGHT TO MODERATE SEAS IN THE NW CARIBBEAN.
NW CARIBBEAN W OF 85W
TODAY
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
TONIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
TUE
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
TUE NIGHT
NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
WED
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
WED NIGHT
NE 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 LESS THAN 10 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.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
TODAY
E WINDS 10 TO 15 KT S OF 18N, AND E LESS THAN 10 KT
ELSEWHERE. SEAS 3 TO 5 FT S OF 18N, AND 2 FT OR LESS ELSEWHERE.
TONIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT S OF 18N, AND
2 FT OR LESS ELSEWHERE.
TUE
E WINDS 10 TO 15 KT. S OF 18N, SEAS 4 TO 6 FT. ELSEWHERE,
SEAS 3 TO 4 FT.
TUE NIGHT
S OF 18N, E WINDS 10 TO 15 KT. ELSEWHERE, NE
TO E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
WED
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
THU
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
THU NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 FT.
FRI
SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
FRI NIGHT
SE WINDS LESS THAN 10 KT. SEAS 2 FT OR LESS.
CARIBBEAN FROM 11N TO 15N W OF 72W
TODAY
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
TONIGHT
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
TUE
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
TUE NIGHT
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
WED
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
THU
SE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
THU NIGHT
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
FRI
S WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
FRI NIGHT
SW WINDS LESS THAN 10 KT IN THE EVENING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SW CARIBBEAN S OF 11N
TODAY
NE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
TONIGHT
VARIABLE WINDS LESS THAN 10 KT, BECOMING NW LESS THAN
10 KT AFTER MIDNIGHT. SEAS 3 TO 4 FT.
TUE
W WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
TUE NIGHT
W WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
WED
W WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
WED NIGHT
SW TO W WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
THU
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
THU NIGHT
VARIABLE WINDS LESS THAN 10 KT, BECOMING SW LESS
THAN 10 KT LATE. SEAS 3 TO 4 FT.
FRI
SW WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
FRI NIGHT
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
CARIBBEAN BETWEEN 64W AND 72W
TODAY
E WINDS 10 TO 20 KT. SEAS 4 TO 5 FT.
TONIGHT
NE WINDS 15 TO 25 KT GULF OF VENEZUELA, AND E 10 TO
20 KT ELSEWHERE. SEAS 4 TO 6 FT.
TUE
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
TUE NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
WED NIGHT
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 5 FT.
FRI NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO
19N W OF 55W
TODAY
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
TONIGHT
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.
WED
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
WED NIGHT
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 15 KT. SEAS 5 TO 7 FT.
FRI
NE TO E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
FRI NIGHT
NE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO
15N W OF 55W
TODAY
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
TONIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
TUE
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WED
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
WED NIGHT
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.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
A TROUGH EXTENDS FROM A 1008 MB LOW THAT IS N OF THE
AREA NEAR 33N74W, SOUTH-SOUTHWEST TO 31N74.5W, TO THE NORTHERN
BAHAMAS AND TO NEAR 24N80W. AN AREA OF SCATTERED TO NUMEROUS
SHOWERS AND THUNDERSTORMS IS TO THE E OF THE TROUGH FROM 25N TO
31N BETWEEN 57W AND 65W. THE TROUGH WILL GRADUALLY WEAKEN
THROUGH TUE, BUT AS THE LOW LIFTS NORTHWARD DURING THE WEEK,
INDICATIONS ARE THAT IT WILL ALLOW FOR THE REMNANTS OF THE TROUGH
TO SLOWLY LIFT BACK TO THE N PROVIDING FOR ADDITIONAL SHOWER AND
THUNDERSTORM ACTIVITY OVER SOME OF THE ZONES IN THE WESTERN HALF
OF THE REGION. OTHERWISE, ATLANTIC HIGH PRESSURE WILL GENERALLY
MAINTAIN MODERATE WINDS AND SEAS ELSEWHERE ACROSS THE REGION
THROUGH THE WEEK. LOOKING AHEAD, A TROPICAL WAVE OVER THE THE
CENTRAL TROPICAL ATLANTIC IS PRODUCING A LARGE AREA OF
DISORGANIZED SHOWERS AND THUNDERSTORMS. ALTHOUGH DRY AND STABLE
AIR IS EXPECTED TO LIMIT DEVELOPMENT DURING THE NEXT DAY OR SO,
GRADUAL DEVELOPMENT IS ANTICIPATED THEREAFTER, AND A TROPICAL
DEPRESSION IS LIKELY TO FORM BY THE MIDDLE TO LATTER PART OF THIS
WEEK AS THE SYSTEM MOVES WEST-NORTHWESTWARD OVER THE CENTRAL
TROPICAL ATLANTIC. REGARDLESS OF DEVELOPMENT, EXPECT INCREASING
WINDS AND BUILDING SEAS OVER THE SOUTHEASTERN WATERS BY THE END
OF THE WEEK.
ATLC WATERS FROM 27N TO 31N W OF 77W
TODAY
N WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
TONIGHT
NE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
TUE
N WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
TUE NIGHT
E WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
WED
NE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
WED NIGHT
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 5 FT.
FRI
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
TODAY
W WINDS LESS THAN 10 KT W OF 70W, AND SW 10 TO 15 KT
ELSEWHERE. SEAS 5 TO 7 FT.
TONIGHT
W OF 70W, W WINDS LESS THAN 10 KT IN THE EVENING,
BECOMING VARIABLE WINDS LESS THAN 10 KT. ELSEWHERE, S TO SW
WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
TUE
SW WINDS LESS THAN 10 KT IN THE MORNING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
TUE NIGHT
E WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
WED
VARIABLE WINDS LESS THAN 10 KT, BECOMING NE LESS THAN
10 KT IN THE AFTERNOON. SEAS 3 TO 4 FT.
WED NIGHT
E WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
THU
E WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
THU NIGHT
SE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
FRI
SE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
FRI NIGHT
SE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
BAHAMAS N OF 22N
TODAY
VARIABLE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
TONIGHT
NE TO E WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
TUE
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WED
E WINDS 10 TO 15 KT. SEAS 3 FT.
WED NIGHT
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
SE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 3 TO 4 FT.
FRI NIGHT
SE WINDS LESS THAN 10 KT. SEAS 3 FT IN THE EVENING,
SUBSIDING TO 2 FT OR LESS.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
TODAY
S WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
TONIGHT
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
TUE
W OF 70W, E WINDS LESS THAN 10 KT. ELSEWHERE, E WINDS
10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN THE AFTERNOON.
SEAS 4 TO 5 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
WED
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
WED NIGHT
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 15 KT. SEAS 5 TO 6 FT.
FRI
SE WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
FRI NIGHT
SE WINDS 10 KT. SEAS 4 TO 5 FT.
ATLC WATERS S OF 22N W OF 65W
TODAY
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
TONIGHT
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 20 KT. SEAS 4 TO 6 FT.
WED
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
THU
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
THU NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
FRI
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI NIGHT
SE WINDS LESS THAN 10 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 5 TO 7 FT.
TUE
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 6 TO 7 FT.
WED
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
THU
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
THU NIGHT
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
FRI
NE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
FRI NIGHT
NE WINDS 10 KT. SEAS 6 TO 9 FT.
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