259
FZNT31 KNHC 182041
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
441 PM 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
THE TAIL OF A COLD FRONT THAT EXTENDS FROM NW HAITI
TO E JAMAICA TO THE OFFSHORE WATERS OF NICARAGUA WILL CONTINUE
TO WEAKEN BEFORE DISSIPATING TONIGHT INTO EARLY 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 THIS EVENING THROUGH WED
EVENING. IN THE SOUTH-CENTRAL AND PORTIONS OF THE SW CARIBBEAN,
FRESH TO STRONG NE TO E WINDS WILL PREVAIL THROUGH THE WEEKEND,
INCREASING IN AREAL COVERAGE FRI. OTHERWISE, HIGH PRESSURE WILL
BUILD NEAR THE BAHAMAS OVER THE WEEKEND AND TRADE WINDS WILL
INCREASE ACROSS THE REGION, WITH GALE-FORCE WINDS DEVELOPING
OFFSHORE COLOMBIA SAT EVENING ALONG WITH ROUGH SEAS. FRESH TO
NEAR GALE-FORCE WINDS WILL PREVAIL IN THE CENTRAL AND PORTIONS
OF THE SW CARIBBEAN DURING THE WEEKEND AND THROUGH EARLY NEXT
WEEK. LOOKING AHEAD, THE TAIL OF A COLD FRONT WILL ENTER THE NW
CARIBBEAN EARLY FRI AND DISSIPATE FRI EVENING.
NW CARIBBEAN W OF 85W
TONIGHT
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 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
NE WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. 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 4 TO 6 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SUN
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
TONIGHT
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 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
S OF 18N, E WINDS 10 TO 15 KT. ELSEWHERE, E WINDS 10 TO
15 KT, DIMINISHING TO LESS THAN 10 KT 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 3 TO 5 FT.
FRI NIGHT
NE WINDS 10 TO 20 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 5 TO 7 FT.
SUN
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
CARIBBEAN FROM 11N TO 15N W OF 72W
..GALE CONDITIONS POSSIBLE SAT NIGHT
TONIGHT
NE WINDS 10 TO 15 KT. 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 3 TO 5 FT.
WED NIGHT
NE WINDS 15 TO 25 KT WITHIN 90 NM OF COAST OF
COLOMBIA, AND NE 10 TO 20 KT ELSEWHERE. SEAS 4 TO 6 FT.
THU
NE WINDS 15 TO 25 KT WITHIN 90 NM OF COAST OF COLOMBIA,
AND NE 10 TO 20 KT ELSEWHERE. SEAS 4 TO 6 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 9 FT.
SAT
NE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
SAT NIGHT
NE WINDS 15 TO 35 KT. SEAS 8 TO 11 FT.
SUN
E WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.
SUN NIGHT
E WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.
SW CARIBBEAN S OF 11N
TONIGHT
N WINDS 10 TO 20 KT. SEAS 3 TO 5 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 4 TO 6 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 10 TO 20 KT. SEAS 7 TO 10 FT.
SAT NIGHT
NE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
SUN
NE WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.
SUN NIGHT
NE WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.
CARIBBEAN BETWEEN 64W AND 72W
TONIGHT
NE WINDS 10 TO 20 KT GULF OF VENEZUELA, AND NE LESS
THAN 10 KT ELSEWHERE. SEAS 3 TO 4 FT.
WED
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WED NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
THU
E WINDS 10 TO 15 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 6 TO 8 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 6 TO 8 FT.
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO
19N W OF 55W
TONIGHT
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
S 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 9 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.
SUN
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO
15N W OF 55W
TONIGHT
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 6 TO 8 FT.
FRI NIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
SAT
E WINDS 10 TO 20 KT. SEAS 6 TO 8 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 6 TO 8 FT.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
FRESH WINDS AND ROUGH SEAS IN THE SE SEMICIRCLE OF A
NON-TROPICAL LOW OF 1007 MB NEAR 26N58W WILL CONTINUE TO AFFECT
THE OFFSHORE WATERS N OF 22N AND E OF 61W THROUGH THIS EVENING
AS THE LOW OPEN OPENS INTO A TROUGH AND MOVES N OF THE AREA.
STRONG TO NEAR GALE-FORCE WINDS WILL PRECEDE AND CONTINUE TO
FOLLOW A COLD FRONT THAT EXTENDS FROM JUST W OF BERMUDA NEAR
31N65W TO NW HISPANIOLA, WHICH IS FORECAST TO REACH FROM 31N60W
TO PUERTO RICO BY WED MORNING. A LOW PRESSURE SYSTEM IS FORECAST
TO DEVELOP ALONG THIS FRONT TONIGHT INTO WED, WHICH WILL SUPPORT
THE DEVELOPMENT OF GALE-FORCE WINDS AND VERY ROUGH SEAS BETWEEN
BERMUDA AND THE BAHAMAS TONIGHT THROUGH WED AFTERNOON. AFTERWARD,
WINDS AND SEAS WILL GRADUALLY DIMINISH ACROSS THE REGION THROUGH
THU NIGHT. LOOKING AHEAD, FRESH TO STRONG SOUTHERLY WINDS WILL
DEVELOP OVER THE NE FLORIDA OFFSHORE WATERS ON THU AHEAD OF A
STRONG COLD FRONT FORECAST TO ENTER THE NW OFFSHORE WATERS LATE
THU INTO THU EVENING. NEAR GALE-FORCE NW WINDS WILL FOLLOW THIS
FRONT, WHICH IS FORECAST TO REACH FROM BERMUDA TO THE CENTRAL
BAHAMAS LATE FRI. THE FRONT WILL MOVE E OF THE AREA ON SAT,
ALLOWING HIGH PRESSURE TO BUILD THE REMAINING WEEKEND.
ATLC WATERS FROM 27N TO 31N W OF 77W
TONIGHT
N WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
WED
N WINDS 10 TO 15 KT. SEAS 7 TO 10 FT.
WED NIGHT
NW WINDS LESS THAN 10 KT. SEAS 7 TO 10 FT.
THU
SW WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
THU NIGHT
W WINDS 20 TO 30 KT. SEAS 7 TO 10 FT.
FRI
NW WINDS 20 TO 25 KT, DIMINISHING TO 10 TO 20 KT IN THE
AFTERNOON. SEAS 8 TO 12 FT.
FRI NIGHT
N WINDS 10 TO 15 KT, SHIFTING TO NW AFTER MIDNIGHT.
SEAS 6 TO 9 FT.
SAT
SW WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN
THE AFTERNOON. SEAS 4 TO 6 FT.
SAT NIGHT
SW WINDS 10 TO 15 KT, SHIFTING TO W AFTER MIDNIGHT.
SEAS 3 TO 4 FT.
SUN
SE WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SUN NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
..GALE WARNING
TONIGHT
NW WINDS 25 TO 35 KT W OF 70W, AND W 20 TO 30 KT
ELSEWHERE. W OF 70W, SEAS 10 TO 15 FT, BUILDING TO 13 TO 18 FT
AFTER MIDNIGHT. ELSEWHERE, SEAS 8 TO 12 FT, BUILDING TO 11 TO
16 FT AFTER MIDNIGHT.
WED
NW WINDS 25 TO 35 KT W OF 70W, AND NW 20 TO 30 KT
ELSEWHERE. SEAS 15 TO 20 FT.
WED NIGHT
NW WINDS 20 TO 30 KT W OF 70W, AND NW 15 TO 25 KT
ELSEWHERE. SEAS 12 TO 17 FT.
THU
NW WINDS 10 TO 20 KT. SEAS 9 TO 14 FT, SUBSIDING TO 8 TO
11 FT IN THE AFTERNOON.
THU NIGHT
W WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
FRI
W WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.
FRI NIGHT
NW WINDS 15 TO 25 KT. SEAS 8 TO 13 FT.
SAT
NW WINDS 10 TO 15 KT, SHIFTING TO SW IN THE AFTERNOON.
SEAS 8 TO 11 FT.
SAT NIGHT
SW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
SUN
NW WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
SUN NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
BAHAMAS N OF 22N
TONIGHT
N WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
WED
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
WED NIGHT
N WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
THU
N WINDS LESS THAN 10 KT IN THE MORNING, BECOMING VARIABLE
WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
THU NIGHT
W WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 3 TO 5 FT.
FRI
NW WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
FRI NIGHT
N WINDS 10 TO 15 KT, SHIFTING TO NE AFTER MIDNIGHT.
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 TO 4 FT.
SUN
E WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 3 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 3 FT.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
..GALE WARNING
TONIGHT
NW WINDS 15 TO 25 KT W OF 70W, AND NW 20 TO 35 KT
ELSEWHERE. SEAS 9 TO 14 FT.
WED
NW WINDS 15 TO 25 KT W OF 70W, AND W 20 TO 35 KT
ELSEWHERE. SEAS 13 TO 18 FT.
WED NIGHT
NW WINDS 15 TO 25 KT W OF 70W, AND NW 20 TO 30 KT
ELSEWHERE. SEAS 13 TO 18 FT.
THU
NW WINDS 10 TO 20 KT. SEAS 9 TO 14 FT W OF 70W, AND 11 TO
15 FT ELSEWHERE.
THU NIGHT
W WINDS 10 TO 15 KT. SEAS 7 TO 10 FT.
FRI
W WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
FRI NIGHT
NW WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
SAT
E WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
SAT NIGHT
E WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
SUN
E WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
ATLC WATERS S OF 22N W OF 65W
TONIGHT
NW WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
WED
NW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
WED NIGHT
NW WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
THU
NW WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 7 TO 10 FT.
THU NIGHT
N WINDS LESS THAN 10 KT. SEAS 6 TO 9 FT.
FRI
VARIABLE WINDS LESS THAN 10 KT. 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, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 3 TO 5 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.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
TONIGHT
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
SW 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
S WINDS LESS THAN 10 KT. SEAS 7 TO 10 FT.
FRI NIGHT
VARIABLE WINDS LESS THAN 10 KT, BECOMING E LESS
THAN 10 KT AFTER MIDNIGHT. SEAS 6 TO 8 FT.
SAT
E WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SUN
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
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