260
FZNT31 KNHC 200920
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
520 AM EDT THU MAR 20 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
BUILDING RIDGE NORTH OF THE AREA WILL SUSTAIN FRESH
TO STRONG EASTERLY TRADE WINDS OVER THE CENTRAL CARIBBEAN
THROUGH THE FORECAST PERIOD. THE PRESSURE GRADIENT BETWEEN THE
AFOREMENTIONED RIDGE AND LOWER PRESSURES OVER N COLOMBIA WILL
RESULT IN NEAR GALE-FORCE WINDS ACROSS THE SOUTH-CENTRAL WATERS
FRI NIGHT THROUGH MON NIGHT, WITH PULSING GALES AT NIGHT
OFFSHORE COLOMBIA FRI THROUGH SUN. ROUGH TO VERY ROUGH SEAS ARE
EXPECTED WITH THE STRONGEST WINDS FRI NIGHT THROUGH THE MIDDLE
OF NEXT WEEK. LOOKING AHEAD, THE TAIL OF A COLD FRONT WILL ENTER
THE NW CARIBBEAN EARLY FRI AND DISSIPATE FRI EVENING. THE
AFOREMENTIONED BUILDING HIGH PRESSURE WILL RESULT IN FRESH TO
STRONG NE WINDS RESUMING IN THE WINDWARD PASSAGE AND THE LEE OF
CUBA FRI EVENING THROUGH SUN NIGHT, AND EAST WINDS OF THE SAME
SPEED AT NIGHT IN THE GULF OF HONDURAS SUN AND MON.
NW CARIBBEAN W OF 85W
TODAY
E WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 3 TO 4 FT.
TONIGHT
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 LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. 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 4 FT.
SUN
E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
MON
SE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
MON NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
TODAY
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.
TONIGHT
S OF 18N, NE WINDS 10 TO 15 KT. ELSEWHERE, NE WINDS
LESS THAN 10 KT, SHIFTING TO N AFTER MIDNIGHT. SEAS 3 FT.
FRI
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT S OF 18N, AND 2 FT
OR LESS ELSEWHERE.
FRI NIGHT
S OF 18N, NE WINDS 10 TO 20 KT. ELSEWHERE, NE WINDS
LESS THAN 10 KT, INCREASING TO 10 TO 15 KT AFTER MIDNIGHT. SEAS
4 TO 6 FT S OF 18N, AND 3 FT ELSEWHERE.
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.
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.
MON
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
MON NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
CARIBBEAN FROM 11N TO 15N W OF 72W
..GALE WARNING
..GALE CONDITIONS POSSIBLE AT NIGHT SAT AND SUN
TODAY
E WINDS 15 TO 25 KT WITHIN 90 NM OF COAST OF COLOMBIA,
AND NE 10 TO 20 KT ELSEWHERE. SEAS 4 TO 6 FT.
TONIGHT
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.
FRI
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
FRI NIGHT
NE WINDS 25 TO 35 KT WITHIN 90 NM OF COAST OF
COLOMBIA, AND NE 15 TO 20 KT ELSEWHERE. SEAS 6 TO 8 FT.
SAT
NE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT.
SAT NIGHT
NE WINDS 25 TO 35 KT. SEAS 8 TO 11 FT.
SUN
E WINDS 15 TO 25 KT. SEAS 8 TO 13 FT.
SUN NIGHT
E WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
MON
E WINDS 15 TO 25 KT. SEAS 8 TO 13 FT.
MON NIGHT
E WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.
SW CARIBBEAN S OF 11N
TODAY
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
TONIGHT
N 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 7 TO 10 FT.
SAT NIGHT
NE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.
SUN
NE WINDS 15 TO 25 KT. SEAS 8 TO 13 FT.
SUN NIGHT
NE WINDS 15 TO 25 KT. SEAS 8 TO 13 FT.
MON
NE WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.
MON NIGHT
NE WINDS 10 TO 15 KT. SEAS 7 TO 10 FT.
CARIBBEAN BETWEEN 64W AND 72W
..GALE CONDITIONS POSSIBLE
TODAY
E WINDS 10 TO 20 KT GULF OF VENEZUELA, AND E 10 TO
15 KT ELSEWHERE. SEAS 3 TO 4 FT.
TONIGHT
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
NE WINDS 15 TO 25 KT GULF OF VENEZUELA, AND E 10 TO
20 KT ELSEWHERE. SEAS 5 TO 7 FT.
SAT
E WINDS 15 TO 25 KT. SEAS 6 TO 8 FT.
SAT NIGHT
E WINDS 15 TO 25 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.
MON
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
MON 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
TODAY
SE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
TONIGHT
E WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
FRI
SE WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
FRI NIGHT
E WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. 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 6 TO 8 FT.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
MON
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
MON NIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO
15N W OF 55W
TODAY
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
TONIGHT
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 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.
MON
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
MON NIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
A WEAKENING, BROAD AREA OF LOW PRESSURE CENTERED NEAR
BERMUDA CONTINUES TO PRODUCE STRONG TO GALE-FORCE CYCLONIC WINDS
OVER MUCH OF THE SW NORTH ATLANTIC, ESPECIALLY BETWEEN 55W AND
75W. THESE WINDS RESULT IN ROUGH TO VERY ROUGH SEAS. WINDS AND
SEAS WILL GRADUALLY DIMINISH AS THE SYSTEM LIFTS N OF THE AREA
LATER TODAY. MEANWHILE, A COLD FRONT CURRENTLY MOVING ACROSS THE
GULF OF AMERICA WILL SUSTAIN FRESH TO STRONG SOUTHERLY WINDS IN
THE NE FLORIDA OFFSHORE WATERS THIS AFTERNOON. THE STRONG FRONT
WILL ENTER THE BASIN THIS EVENING AND STRONG TO NEAR GALE-FORCE NW
WINDS AND ROUGH TO VERY ROUGH SEAS WILL FOLLOW. THE FRONT IS
WHICH IS FORECAST TO REACH FROM 31N71W TO ANDROS ISLAND AND W CUBA
FRI MORNING, AND FROM 31N57W TO THE SOUTHERN BAHAMAS SAT MORNING
WHERE IT STALL BEFORE DISSIPATING LATE SAT. HIGH PRESSURE WILL
BUILD NE TO E OF THE BAHAMAS IN THE WAKE OF THE FRONT THE
REMAINDER WEEKEND. LOOKING AHEAD, A WEAK COLD FRONT MAY ENTER THE
NW OFFSHORE WATERS MON NIGHT.
ATLC WATERS FROM 27N TO 31N W OF 77W
TODAY
SW WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
TONIGHT
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 IN THE EVENING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 6 TO 9 FT.
SAT
VARIABLE WINDS LESS THAN 10 KT, BECOMING SW LESS THAN
10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT.
SAT NIGHT
S WINDS LESS THAN 10 KT. SEAS 3 TO 4 FT.
SUN
SE WINDS LESS THAN 10 KT. SEAS 3 FT.
SUN NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
MON
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
MON NIGHT
S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
TODAY
W OF 70W, NW WINDS 10 TO 20 KT. ELSEWHERE, NW WINDS
15 TO 25 KT, DIMINISHING TO 10 TO 15 KT IN THE AFTERNOON. SEAS
9 TO 14 FT.
TONIGHT
W OF 70W, W WINDS 10 TO 15 KT, SHIFTING TO SW 15 TO
25 KT AFTER MIDNIGHT. ELSEWHERE, NW WINDS 10 TO 15 KT. SEAS 7 TO
10 FT.
FRI
W OF 70W, W WINDS 15 TO 25 KT. ELSEWHERE, W WINDS 10 TO
15 KT, SHIFTING TO SW 15 TO 25 KT IN THE AFTERNOON. SEAS 8 TO
11 FT W OF 70W, AND 6 TO 8 FT ELSEWHERE.
FRI NIGHT
W OF 70W, NW WINDS 15 TO 25 KT, SHIFTING TO N 10 TO
15 KT AFTER MIDNIGHT. ELSEWHERE, NW WINDS 15 TO 25 KT. SEAS 8 TO
13 FT W OF 70W, AND 8 TO 11 FT ELSEWHERE.
SAT
N WINDS 10 TO 15 KT, SHIFTING TO SE IN THE AFTERNOON.
SEAS 7 TO 10 FT.
SAT NIGHT
NW WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT.
SUN
VARIABLE WINDS LESS THAN 10 KT, BECOMING E LESS THAN
10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT.
SUN NIGHT
SE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
MON
SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
MON NIGHT
SE WINDS 10 TO 15 KT. SEAS 4 TO 5 FT.
BAHAMAS N OF 22N
TODAY
N WINDS LESS THAN 10 KT IN THE MORNING, BECOMING
VARIABLE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
TONIGHT
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
NE WINDS LESS THAN 10 KT, SHIFTING TO E AFTER
MIDNIGHT. SEAS 3 TO 4 FT.
SUN
E WINDS 10 TO 15 KT. SEAS 3 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
MON
SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
MON NIGHT
SE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
TODAY
NW WINDS 10 TO 20 KT. W OF 70W, SEAS 9 TO 14 FT.
ELSEWHERE, SEAS 13 TO 16 FT, SUBSIDING TO 11 TO 13 FT IN THE
AFTERNOON.
TONIGHT
NW WINDS 10 TO 15 KT. SEAS 8 TO 11 FT.
FRI
W WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
FRI NIGHT
NW WINDS 10 TO 15 KT. SEAS 6 TO 9 FT W OF 70W, AND
5 TO 7 FT ELSEWHERE.
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 5 TO 7 FT.
SUN
E WINDS 10 KT. SEAS 5 TO 7 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
SE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
ATLC WATERS S OF 22N W OF 65W
TODAY
NW WINDS LESS THAN 10 KT. SEAS 7 TO 10 FT.
TONIGHT
NW 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. 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.
MON
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
MON NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
TODAY
SW WINDS 10 TO 15 KT. SEAS 8 TO 11 FT.
TONIGHT
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
VARIABLE WINDS LESS THAN 10 KT. 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 4 TO 6 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
MON
E WINDS 10 TO 20 KT. SEAS 6 TO 7 FT.
MON NIGHT
E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT.
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