640
FZNT31 KNHC 180403
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
1203 AM EDT TUE MAR 18 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
FRESH TO STRONG NORTHERLY WINDS AND ROUGH SEAS WILL
CONTINUE TO FOLLOW A COLD FRONT THAT EXTENDS FROM CAMAGUEY, CUBA
TO NE HONDURAS. THE FRONT IS FORECAST TO REACH FROM EASTERN CUBA
TO NE NICARAGUA TUE MORNING BEFORE ITS TAIL DISSIPATES TUE NIGHT
INTO WED. BUILDING HIGH PRESSURE IN THE WAKE OF THE FRONT N OF
THE AREA WILL LEAD TO THE DEVELOPMENT OF PULSING FRESH TO STRONG
NE WINDS IN THE LEE OF CUBA AND THE WINDWARD PASSAGE TUE THROUGH
WED EVENING. IN THE SOUTH-CENTRAL AND PORTIONS OF THE SW
CARIBBEAN, FRESH TO STRONG NW TO E WINDS WILL PREVAIL THROUGH
THE WEEKEND. HIGH PRESSURE WILL BUILD NEAR THE BAHAMAS OVER THE
WEEKEND AND TRADE WINDS WILL INCREASE ACROSS THE REGION, WITH
NEAR GALE-FORCE WINDS POSSIBLY DEVELOPING OFFSHORE COLOMBIA, AND
STRONG WINDS SOUTH OF HISPANIOLA.
NW CARIBBEAN W OF 85W
OVERNIGHT
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
TUE
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
TUE NIGHT
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
WED
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
THU
E WINDS 10 TO 15 KT, SHIFTING TO NE IN THE AFTERNOON.
SEAS 3 TO 4 FT.
THU NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
FRI
NE WINDS 10 TO 15 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 3 TO 5 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
OVERNIGHT
N WINDS 10 TO 20 KT. SEAS 3 FT S OF 18N, AND 4 TO
6 FT ELSEWHERE.
TUE
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
TUE NIGHT
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED
E WINDS 10 TO 20 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
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
FRI NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 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.
CARIBBEAN FROM 11N TO 15N W OF 72W
OVERNIGHT
NE WINDS 15 TO 20 KT WITHIN 90 NM OF COAST OF
COLOMBIA, AND NE 10 TO 15 KT ELSEWHERE. SEAS 4 TO 6 FT.
TUE
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
TUE NIGHT
NE WINDS 10 TO 20 KT WITHIN 90 NM OF COAST OF
COLOMBIA, AND NE 10 TO 15 KT ELSEWHERE. SEAS 3 TO 5 FT.
WED
NE WINDS 10 TO 20 KT WITHIN 90 NM OF COAST OF COLOMBIA,
AND NE 10 TO 15 KT ELSEWHERE. SEAS 4 TO 6 FT.
WED NIGHT
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
THU
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
THU NIGHT
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
FRI
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
FRI NIGHT
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
SAT
NE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
SAT NIGHT
NE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.
SW CARIBBEAN S OF 11N
OVERNIGHT
N WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
TUE
N WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
TUE NIGHT
N WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED NIGHT
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
THU
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
THU NIGHT
N WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
FRI
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
FRI NIGHT
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
SAT
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
SAT NIGHT
NE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
CARIBBEAN BETWEEN 64W AND 72W
OVERNIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
TUE
NE WINDS 10 TO 15 KT GULF OF VENEZUELA, AND E LESS THAN
10 KT ELSEWHERE. SEAS 3 FT.
TUE NIGHT
NE WINDS 10 TO 20 KT GULF OF VENEZUELA, AND NE LESS
THAN 10 KT ELSEWHERE. SEAS 3 FT.
WED
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WED NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
THU
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
THU NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
FRI
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
FRI NIGHT
E WINDS 10 TO 20 KT. 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 6 TO 8 FT.
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO
19N W OF 55W
OVERNIGHT
NW WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
TUE
S WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
TUE NIGHT
S WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
WED
S WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
WED NIGHT
SE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
THU
SE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
THU NIGHT
E WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
FRI
SE WINDS 10 TO 15 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 5 TO 7 FT.
SAT NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 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.
TUE
SE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 3 TO 5 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 4 TO 6 FT.
FRI
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
FRI NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SAT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SAT NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
A 1007 MB LOW PRES NEAR 25N57W IS PRODUCING STRONG
TO NEAR GALE-FORCE E-SE WINDS NORTH OF 25N AND BETWEEN 44W AND
61W. ROUGH TO VERY ROUGH IN THE AREA DESCRIBED. THESE WINDS AND
SEAS WILL PERSIST IN THE NORTHERN SEMICIRCLE AS THE LOW MOVES
NORTH AND EXITS THE FORECAST WATERS BY WED MORNING. STRONG TO
NEAR GALE- FORCE WINDS WILL PRECEDE AND CONTINUE TO FOLLOW A COLD
FRONT THAT EXTENDS FROM 31N73W TO CAMAGUEY, CUBA. THE FRONT WILL
REACH FROM 31N68W TO THE TURKS AND CAICOS AND EASTERN CUBA TUE
MORNING, AND FROM 31N60W TO PUERTO RICO WED MORNING. A LOW
PRESSURE SYSTEM IS FORECAST TO DEVELOP ALONG THIS FRONT TUE
NIGHT, WHICH WILL SUPPORT THE DEVELOPMENT OF GALE-FORCE WINDS AND
VERY ROUGH SEAS BETWEEN BERMUDA AND THE BAHAMAS TUE NIGHT
THROUGH WED. AFTERWARD, WINDS AND SEAS WILL GRADUALLY DIMINISH
ACROSS THE REGION THROUGH THU NIGHT. LOOKING AHEAD, A THIRD
STRONG FRONT IS FORECAST TO COME OFF THE FLORIDA NE COAST THU.
ATLC WATERS FROM 27N TO 31N W OF 77W
OVERNIGHT
NW WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.
TUE
N WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
TUE NIGHT
N WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
WED
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 6 TO 8 FT.
WED NIGHT
W WINDS LESS THAN 10 KT. SEAS 6 TO 9 FT.
THU
SW WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
THU NIGHT
W WINDS 20 TO 30 KT. SEAS 7 TO 10 FT.
FRI
N WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
FRI NIGHT
N WINDS 10 TO 15 KT, SHIFTING TO E AFTER MIDNIGHT.
SEAS 6 TO 9 FT.
SAT
S WINDS LESS THAN 10 KT, SHIFTING TO SW IN THE AFTERNOON.
SEAS 4 TO 6 FT.
SAT NIGHT
SW WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN
10 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
..GALE WARNING
OVERNIGHT
W WINDS 15 TO 25 KT W OF 70W, AND SE 10 TO 20 KT
ELSEWHERE. SEAS 7 TO 10 FT.
TUE
NW WINDS 15 TO 25 KT W OF 70W, AND W 10 TO 20 KT
ELSEWHERE. SEAS 8 TO 13 FT W OF 70W, AND 7 TO 9 FT ELSEWHERE.
TUE NIGHT
NW WINDS 25 TO 35 KT. SEAS 11 TO 16 FT.
WED
NW WINDS 25 TO 35 KT W OF 70W, AND NW 20 TO 30 KT
ELSEWHERE. SEAS 13 TO 18 FT.
WED NIGHT
NW WINDS 20 TO 30 KT. SEAS 11 TO 16 FT.
THU
NW WINDS 10 TO 20 KT. SEAS 8 TO 13 FT.
THU NIGHT
W WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
FRI
W WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.
FRI NIGHT
NW WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.
SAT
N WINDS 10 TO 15 KT, SHIFTING TO SW IN THE AFTERNOON.
SEAS 8 TO 11 FT.
SAT NIGHT
SW WINDS LESS THAN 10 KT. SEAS 6 TO 9 FT.
BAHAMAS N OF 22N
OVERNIGHT
N WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
TUE
N WINDS 15 TO 25 KT. SEAS 4 TO 6 FT.
TUE NIGHT
N WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED
N WINDS 10 TO 15 KT, SHIFTING TO NE IN THE AFTERNOON.
SEAS 4 TO 6 FT.
WED NIGHT
N WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
THU
N WINDS LESS THAN 10 KT IN THE MORNING, BECOMING VARIABLE
WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
THU NIGHT
NW WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 3 TO 5 FT.
FRI
N WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
FRI NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
SAT
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SAT NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 FT.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
OVERNIGHT
W WINDS 10 TO 20 KT W OF 70W, AND SE LESS THAN
10 KT ELSEWHERE. SEAS 5 TO 7 FT.
TUE
NW WINDS 15 TO 25 KT W OF 70W, AND SW 10 TO 20 KT
ELSEWHERE. SEAS 7 TO 10 FT.
TUE NIGHT
NW WINDS 15 TO 25 KT. SEAS 9 TO 14 FT.
WED
NW WINDS 15 TO 25 KT W OF 70W, AND W 20 TO 30 KT
ELSEWHERE. SEAS 12 TO 17 FT.
WED NIGHT
NW WINDS 20 TO 30 KT. SEAS 12 TO 17 FT.
THU
NW WINDS 10 TO 20 KT. SEAS 10 TO 15 FT, SUBSIDING TO 9 TO
12 FT IN THE AFTERNOON.
THU NIGHT
W WINDS 10 TO 15 KT. SEAS 8 TO 11 FT.
FRI
W WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
FRI NIGHT
N WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
SAT
NE WINDS 10 TO 15 KT, SHIFTING TO E IN THE AFTERNOON.
SEAS 6 TO 8 FT.
SAT NIGHT
E WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
ATLC WATERS S OF 22N W OF 65W
OVERNIGHT
NE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
TUE
SW WINDS LESS THAN 10 KT, SHIFTING TO W IN THE AFTERNOON.
SEAS 4 TO 6 FT.
TUE NIGHT
NW WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
WED
NW WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
WED NIGHT
NW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
THU
NW WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 7 TO 10 FT.
THU NIGHT
NW WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
FRI
VARIABLE WINDS LESS THAN 10 KT, BECOMING NW LESS THAN
10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT.
FRI NIGHT
NE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SAT
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
OVERNIGHT
NW WINDS 10 KT. SEAS 7 TO 9 FT.
TUE
SW WINDS LESS THAN 10 KT. SEAS 6 TO 9 FT.
TUE NIGHT
SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
WED
SW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
WED NIGHT
W WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
THU
SW WINDS 10 TO 15 KT. SEAS 8 TO 11 FT.
THU NIGHT
W WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT
AFTER MIDNIGHT. SEAS 8 TO 11 FT.
FRI
SW WINDS LESS THAN 10 KT. SEAS 7 TO 10 FT.
FRI NIGHT
SW WINDS LESS THAN 10 KT IN THE EVENING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
SAT
E WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
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