821
FZNT31 KNHC 202045
OFFN20
MARINE WEATHER HF VOICE BROADCAST
NWS NATIONAL HURRICANE CENTER MIAMI, FL
345 PM EST FRI DEC 20 2024
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
HIGH PRESSURE ACROSS THE NE ATLANTIC EXTENDING A
RIDGE SW TO JUST E OF THE BAHAMAS CONTINUES TO SLOWLY WEAKEN
NORTH OF THE AREA THIS AFTERNOON, LEADING TO GRADUALLY
DIMINISHING WINDS AND SEAS. AN ILL-DEFINED COLD FRONT IS SINKING
SLOWLY SOUTHWARD ACROSS W CUBA AND THE YUCATAN CHANNEL THIS
AFTERNOON, AND WILL PROMOTE MODERATE TO LOCALLY FRESH NORTHERLY
WINDS ACROSS THE WESTERN CARIBBEAN THROUGH SUN AS THE FRONT
DISSIPATES. MODERATE TO LOCALLY FRESH NE TO E WINDS WILL
DOMINATE THE REST OF THE BASIN THROUGH SUN AS A NEW RIDGE BUILDS
OVER THE CARIBBEAN FROM THE NW. LOOKING AHEAD, HIGH PRESSURE
WILL SLIDE SLOWLY EASTWARD ACROSS THE WEST AND THEN CENTRAL
ATLANTIC EARLY NEXT WEEK WHILE A SERIES OF COLD FRONTS MOVE OFF
THE SOUTHEASTERN UNITED STATES COAST. A STRENGTHENING PRESSURE
GRADIENT BETWEEN THESE FEATURES WILL LEAD TO FRESH TO LOCALLY
STRONG NE TO E WINDS ACROSS MUCH OF THE CARIBBEAN MON THROUGH
WED, PARTICULARLY THROUGH THE WINDWARD PASSAGE.
NW CARIBBEAN W OF 85W
TONIGHT
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SAT
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SAT NIGHT
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SUN
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SUN NIGHT
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
MON
NE WINDS LESS THAN 10 KT. SEAS 4 TO 5 FT.
MON NIGHT
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN
10 KT AFTER MIDNIGHT. SEAS 3 TO 5 FT.
TUE
NE WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN
THE AFTERNOON. SEAS 3 TO 5 FT.
TUE NIGHT
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
WED
NE WINDS 10 TO 15 KT, SHIFTING TO E IN THE AFTERNOON.
SEAS 3 TO 5 FT.
WED NIGHT
E WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
CARIBBEAN N OF 15N BETWEEN 72W AND 85W
TONIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
SAT
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
SAT NIGHT
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
SUN
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SUN NIGHT
NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
MON
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
MON NIGHT
NE WINDS 10 TO 20 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 5 TO 7 FT.
WED
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
CARIBBEAN FROM 11N TO 15N W OF 72W
TONIGHT
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SAT
NE WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
SAT NIGHT
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SUN
NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SUN NIGHT
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
MON
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
MON NIGHT
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
TUE
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
TUE NIGHT
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
WED
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
SW CARIBBEAN S OF 11N
TONIGHT
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SAT
N WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
SAT NIGHT
N WINDS 10 KT. SEAS 4 TO 5 FT.
SUN
N WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SUN NIGHT
N WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
MON
NE WINDS 10 TO 15 KT, SHIFTING TO N IN THE AFTERNOON.
SEAS 4 TO 6 FT.
MON NIGHT
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT
AFTER MIDNIGHT. SEAS 4 TO 6 FT.
TUE
N WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
TUE NIGHT
NE WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
WED
N WINDS LESS THAN 10 KT. SEAS 5 TO 7 FT.
WED NIGHT
N WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 4 TO 6 FT.
CARIBBEAN BETWEEN 64W AND 72W
TONIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SAT
E WINDS 10 TO 15 KT. SEAS 3 FT GULF OF VENEZUELA, AND
4 TO 6 FT ELSEWHERE.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT GULF OF
VENEZUELA, AND 4 TO 6 FT ELSEWHERE.
SUN
E WINDS 10 TO 15 KT. SEAS 3 FT GULF OF VENEZUELA, AND
4 TO 6 FT ELSEWHERE.
SUN NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
MON
E WINDS 10 TO 20 KT. SEAS 5 TO 6 FT.
MON NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
TUE
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
TUE NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
WED
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 6 FT.
OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO
19N W OF 55W
TONIGHT
E WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
SAT
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 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.
MON
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
MON NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
TUE
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
WED
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO
15N W OF 55W
TONIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
SAT
E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
SAT NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SUN
E WINDS 10 TO 15 KT. SEAS 5 TO 7 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 15 KT. SEAS 6 TO 8 FT.
TUE
E WINDS 10 TO 15 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 5 TO 7 FT.
WED NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SYNOPSIS FOR THE THE SW N ATLANTIC INCLUDING THE BAHAMAS
SYNOPSIS
WIDESPREAD FRESH SE TO S WINDS AND MODERATE NE SWELL
OCCURRING NORTH OF 15N AND EAST OF THE BAHAMAS WILL SLOWLY
DIMINISH THROUGH SAT, AS HIGH PRESSURE EXTENDING SOUTHWEST INTO
THE REGION WEAKENS AND DRIFTS EASTWARD. AN ILL-DEFINED COLD
FRONT EXTENDING FROM 31N72W THROUGH THE CENTRAL BAHAMAS AND INTO
CENTRAL CUBA ALONG 80W WILL MOVE SLOWLY SOUTHEASTWARD THROUGH
THE WEEKEND, REACHING FROM 31N67W TO EASTERN CUBA BY SAT MORNING,
THEN WEAKEN FROM 31N61W TO FAR E PORTIONS OF CUBA SUN MORNING.
FRESH TO STRONG W TO NW WINDS AND ROUGH SEAS WILL OCCUR N OF 28N
AND BEHIND THE FRONT TONIGHT. LOOKING AHEAD, WIDESPREAD FRESH TO
LOCALLY STRONG NE WINDS AND ROUGH SEAS WILL REDEVELOP NORTH OF
20N SUN NIGHT THROUGH EARLY NEXT WEEK AS STRONG HIGH PRESSURE
BUILDS ACROSS THE WESTERN ATLANTIC AND INTO THE LOCAL REGION,
BEHIND A REINFORCING COLD FRONT.
ATLC WATERS FROM 27N TO 31N W OF 77W
TONIGHT
NW WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
SAT
N WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
SAT NIGHT
N WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SUN
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
SUN NIGHT
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
MON
E WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.
MON NIGHT
E WINDS 15 TO 25 KT. SEAS 8 TO 11 FT.
TUE
SE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
TUE NIGHT
SE WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.
WED
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
WED NIGHT
SE WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W
TONIGHT
W WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
SAT
NW WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
SAT NIGHT
N WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT
AFTER MIDNIGHT. SEAS 6 TO 8 FT.
SUN
N WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
SUN NIGHT
NE WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.
MON
NE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
MON NIGHT
E WINDS 10 TO 20 KT. SEAS 8 TO 11 FT.
TUE
E WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
TUE NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
WED
NE WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
WED NIGHT
NE WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN
10 KT AFTER MIDNIGHT. SEAS 4 TO 6 FT.
BAHAMAS N OF 22N
TONIGHT
N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
SAT
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT IN
THE AFTERNOON. SEAS 3 TO 5 FT.
SAT NIGHT
NE WINDS LESS THAN 10 KT. SEAS 3 TO 5 FT.
SUN
NE WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN
THE AFTERNOON. SEAS 3 TO 4 FT.
SUN NIGHT
NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT.
MON
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
MON NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
TUE
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
TUE NIGHT
E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
WED
E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT.
WED NIGHT
E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT.
ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS
TONIGHT
W OF 70W, N WINDS LESS THAN 10 KT, SHIFTING TO NW
AFTER MIDNIGHT. ELSEWHERE, S WINDS 10 TO 20 KT. SEAS 7 TO 9 FT.
SAT
NW WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
SAT NIGHT
N WINDS 10 TO 15 KT, DIMINISHING TO LESS THAN 10 KT
AFTER MIDNIGHT. SEAS 6 TO 7 FT.
SUN
N WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 5 TO 7 FT.
SUN NIGHT
NE WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
MON
NE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.
MON NIGHT
NE WINDS 15 TO 25 KT. SEAS 8 TO 12 FT.
TUE
NE WINDS 15 TO 20 KT. SEAS 8 TO 11 FT.
TUE NIGHT
E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT.
WED
NE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
WED NIGHT
NE WINDS 10 TO 15 KT. SEAS 6 TO 7 FT.
ATLC WATERS S OF 22N W OF 65W
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
SAT
NW WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT.
SAT NIGHT
N WINDS 10 TO 15 KT, SHIFTING TO NE AFTER MIDNIGHT.
SEAS 4 TO 6 FT.
SUN
NE WINDS LESS THAN 10 KT, INCREASING TO 10 TO 15 KT IN
THE AFTERNOON. SEAS 3 TO 5 FT.
SUN NIGHT
NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT.
MON
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
MON NIGHT
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
TUE
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
TUE NIGHT
E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
WED
E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
WED NIGHT
NE WINDS 10 TO 20 KT. SEAS 6 TO 8 FT.
ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W
TONIGHT
SE WINDS 10 TO 20 KT. SEAS 7 TO 10 FT.
SAT
SE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
SAT NIGHT
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
SUN
SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT.
SUN NIGHT
E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
MON
E WINDS 10 TO 15 KT. SEAS 5 TO 6 FT.
MON NIGHT
NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT.
TUE
NE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
TUE NIGHT
NE WINDS 10 TO 15 KT. SEAS 6 TO 9 FT.
WED
NE WINDS 10 TO 15 KT. SEAS 7 TO 8 FT.
WED NIGHT
NE WINDS 10 TO 15 KT. SEAS 6 TO 7 FT.
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