847
FZNT31 KNHC 172050
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
450 PM EDT MON MAR 17 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 WESTERN CUBA
NEAR 22N80W TO THE WESTERN GULF OF HONDURAS. THE FRONT IS
FORECAST TO REACH FROM EASTERN CUBA TO NE NICARAGUA TUE MORNING
BEFORE ITS TAIL DISSIPATE TUE NIGHT INTO WED. BUILDING HIGH
PRESSURE IN THE WAKE OF THE FRONT N OF THE AREA WILL LEAD TO THE
DEVELOPMENT OF 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
TONIGHT
NE WINDS 15 TO 25 KT. SEAS 5 TO 7 FT.
TUE
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
TUE NIGHT
E 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
NE WINDS LESS THAN 10 KT. 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 20 KT. SEAS 3 TO 5 FT.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
TONIGHT
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 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 4 TO 6 FT.
CARIBBEAN FROM 11N TO 15N W OF 72W
TONIGHT
NE WINDS 15 TO 20 KT WITHIN 90 NM OF COAST OF
COLOMBIA, AND NE 10 TO 15 KT ELSEWHERE. SEAS 3 TO 5 FT.
TUE
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 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 15 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
TONIGHT
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 8 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
TONIGHT
NE WINDS 15 TO 20 KT GULF OF VENEZUELA, AND NE 10 TO
15 KT ELSEWHERE. 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 20 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 4 TO 6 FT.
FRI NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SAT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SAT NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO
19N W OF 55W
TONIGHT
W 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, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. 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 4 TO 6 FT.
THU NIGHT
E WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
FRI
E WINDS LESS THAN 10 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 4 TO 6 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.
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
GALE-FORCE NE TO E WINDS WILL PREVAIL IN THE
NORTHERN SEMICIRCLE OF A 1007 MB LOW NEAR 25N56W THROUGH THIS
EVENING AS STRONG HIGH PRESSURE NE OF THE LOW STARTS TO WEAKEN.
HOWEVER, FRESH TO NEAR GALE-FORCE WINDS AND ROUGH TO VERY ROUGH
SEAS ASSOCIATED WITH THE LOW WILL CONTINUE TO AFFECT THE OFFSHORE
ZONES E OF 63W AND N OF 23N THROUGH TUE EVENING. STRONG TO NEAR
GALE-FORCE WINDS WILL PRECEDE AND CONTINUE TO FOLLOW A COLD FRONT
THAT EXTENDS FROM 30N75W TO ANDROS ISLAND TO WESTERN 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
TONIGHT
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 8 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 15 TO 25 KT. SEAS 7 TO 10 FT.
FRI
NW WINDS 20 TO 25 KT, SHIFTING TO N 10 TO 20 KT IN THE
AFTERNOON. SEAS 8 TO 11 FT.
FRI NIGHT
NE WINDS 10 TO 15 KT, SHIFTING TO E AFTER MIDNIGHT.
SEAS 6 TO 9 FT.
SAT
S 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. SEAS 3 TO 4 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
..GALE WARNING
TONIGHT
W WINDS 15 TO 25 KT W OF 70W, AND SE 10 TO 20 KT
ELSEWHERE. SEAS 7 TO 10 FT W OF 70W, AND 6 TO 8 FT ELSEWHERE.
TUE
NW WINDS 15 TO 25 KT W OF 70W, AND W 15 TO 25 KT
ELSEWHERE. SEAS 8 TO 13 FT W OF 70W, AND 6 TO 9 FT ELSEWHERE.
TUE NIGHT
NW WINDS 20 TO 35 KT W OF 70W, AND W 20 TO 30 KT
ELSEWHERE. SEAS 10 TO 15 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 15 TO 25 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 S IN THE AFTERNOON. SEAS
7 TO 10 FT.
SAT NIGHT
S WINDS LESS THAN 10 KT. SEAS 6 TO 9 FT.
BAHAMAS N OF 22N
TONIGHT
NW WINDS 10 TO 20 KT. SEAS 3 TO 5 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 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 4 TO 6 FT.
WED NIGHT
NE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
THU
NW 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 IN THE EVENING,
SUBSIDING TO 2 FT OR LESS.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
TONIGHT
W OF 70W, SW WINDS 10 TO 15 KT, SHIFTING TO W 15 TO
25 KT AFTER MIDNIGHT. ELSEWHERE, SE WINDS LESS THAN 10 KT. SEAS
5 TO 7 FT.
TUE
NW WINDS 15 TO 25 KT W OF 70W, AND SW 10 TO 20 KT
ELSEWHERE. SEAS 6 TO 9 FT.
TUE NIGHT
NW WINDS 15 TO 25 KT. SEAS 8 TO 11 FT, BUILDING TO
9 TO 14 FT AFTER MIDNIGHT.
WED
NW WINDS 15 TO 25 KT W OF 70W, AND W 20 TO 30 KT
ELSEWHERE. SEAS 11 TO 16 FT.
WED NIGHT
NW WINDS 15 TO 25 KT. SEAS 12 TO 17 FT.
THU
NW WINDS 10 TO 20 KT. SEAS 10 TO 15 FT, SUBSIDING TO 8 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 10 KT. SEAS 6 TO 8 FT.
ATLC WATERS S OF 22N W OF 65W
TONIGHT
E 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 5 TO 7 FT.
WED
NW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
WED NIGHT
NW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
THU
NW WINDS LESS THAN 10 KT. SEAS 6 TO 9 FT.
THU NIGHT
N WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
FRI
VARIABLE WINDS LESS THAN 10 KT, BECOMING N 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, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 3 TO 5 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
TONIGHT
NW WINDS 10 KT. SEAS 6 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
SW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
THU
SW WINDS 10 TO 15 KT. SEAS 7 TO 10 FT.
THU NIGHT
W WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT
AFTER MIDNIGHT. SEAS 7 TO 10 FT.
FRI
SW WINDS LESS THAN 10 KT. SEAS 7 TO 10 FT.
FRI NIGHT
W WINDS LESS THAN 10 KT IN THE EVENING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
SAT
NE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page