456 
FZNT31 KNHC 171525
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1025 AM EST Sun Dec 17 2023

Marine Weather HF Voice Broadcast for the Tropical N Atlantic
from 07N to 22N between 55W and 64W, the SW N Atlantic S of
31N W of 65W including 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 between 55W and 64W

.SYNOPSIS...A cold front is entering the NW Caribbean followed
by fresh to strong NW winds and building seas of up to 10 ft.
The front will reach from eastern Cuba to Costa Rica Mon
morning, then stall and weaken from central Hispaniola to Panama
by early Wed. Strong high pressure over the Atlantic will
continue to produce fresh to locally strong winds over the NE
Caribbean today. 

NW Caribbean W of 85W

.TODAY...NW winds 15 to 25 kt. Seas 6 to 9 ft. 
.TONIGHT...NW winds 10 to 20 kt. Seas 6 to 8 ft. 
.MON...NW winds 10 to 20 kt. Seas 5 to 7 ft. 
.MON NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...N winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.WED...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED NIGHT...NE winds 10 to 15 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. 

Caribbean N of 15N between 72W and 85W

.TODAY...SW winds 10 to 20 kt. Seas 5 to 7 ft. 
.TONIGHT...NW winds 10 to 20 kt. Seas 5 to 7 ft. 
.MON...N winds 10 to 20 kt. Seas 5 to 7 ft. 
.MON NIGHT...N winds 10 to 20 kt. Seas 4 to 6 ft. 
.TUE...N winds 10 to 20 kt. Seas 5 to 7 ft. 
.TUE NIGHT...NE winds 15 to 25 kt. Seas 5 to 7 ft. 
.WED...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.WED NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 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. 

Caribbean from 11N to 15N W of 72W

.TODAY...NE winds 10 to 15 kt. Seas 4 to 5 ft. 
.TONIGHT...E winds 10 to 15 kt within 90 nm of coast of
Colombia, and NE 15 to 25 kt elsewhere. Seas 5 to 7 ft. 
.MON...E winds 10 kt within 90 nm of coast of Colombia, and NE
15 to 25 kt elsewhere. Seas 3 to 4 ft within 90 nm of coast of
Colombia, and 5 to 7 ft elsewhere. 
.MON NIGHT...NE winds 10 kt within 90 nm of coast of Colombia,
and N 15 to 25 kt elsewhere. Seas 3 to 4 ft within 90 nm of
coast of Colombia, and 5 to 7 ft elsewhere. 
.TUE...NE winds 15 to 25 kt. Seas 6 to 8 ft. 
.TUE NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.WED...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.WED NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.THU...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 7 ft. 

SW Caribbean S of 11N

.TODAY...N winds less than 10 kt, increasing to 10 to 15 kt in
the afternoon. Seas 3 to 5 ft. 
.TONIGHT...N winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...N winds 10 to 20 kt. Seas 5 to 7 ft. 
.MON NIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. 
.TUE...N winds 10 to 20 kt. Seas 6 to 9 ft. 
.TUE NIGHT...N winds 15 to 25 kt. Seas 6 to 9 ft. 
.WED...N winds 10 to 20 kt. Seas 6 to 9 ft. 
.WED NIGHT...N winds 10 to 20 kt. Seas 6 to 8 ft.
.THU...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.THU NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. 

Caribbean between 64W and 72W

.TODAY...E winds 10 to 15 kt. Seas 3 ft Gulf of Venezuela, and
4 to 6 ft elsewhere. 
.TONIGHT...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and
5 to 7 ft elsewhere. 
.MON...E winds 10 to 15 kt. Seas 3 ft Gulf of Venezuela, and
5 to 7 ft elsewhere. 
.MON NIGHT...E winds 10 to 15 kt. Gulf of Venezuela, seas 3 ft
in the evening, subsiding to 2 ft or less. Elsewhere, seas 4 to
6 ft. 
.TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 5 ft. 
.TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED...NE winds less than 10 kt. Seas 3 to 5 ft. 
.WED NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.THU...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.THU NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. 

Offshore Leeward Islands and adjacent ATLC waters from 15N to
19N W of 55W

.TODAY...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.TONIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.MON...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.MON NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft. 
.TUE...NE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 6 to 9 ft. 
.TUE NIGHT...E winds less than 10 kt. Seas 6 to 9 ft. 
.WED...Variable winds less than 10 kt. Seas 6 to 9 ft. 
.WED NIGHT...Variable winds less than 10 kt, becoming NE less
than 10 kt after midnight. Seas 6 to 9 ft. 
.THU...Variable winds less than 10 kt. Seas 6 to 8 ft. 
.THU NIGHT...NE winds less than 10 kt. Seas 5 to 7 ft. 

Offshore Windward Islands and adjacent ATLC waters from 07N to
15N W of 55W

.TODAY...E winds 10 to 15 kt. Seas 5 to 7 ft. 
.TONIGHT...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...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.TUE...NE winds 10 to 15 kt, shifting to E in the afternoon.
Seas 5 to 7 ft. 
.TUE NIGHT...E winds less than 10 kt. Seas 5 to 7 ft. 
.WED...E winds less than 10 kt. Seas 5 to 7 ft. 
.WED NIGHT...E winds less than 10 kt. Seas 6 to 8 ft. 
.THU...E winds less than 10 kt. Seas 5 to 7 ft. 
.THU NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 5 to 7 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A stationary front extends from 22N55W W-NW to
25N73W. A warm front continues from this point to a 994 mb low
pressure over N Florida. The stationary front will weaken and
become ill defined today. Fresh to strong E to SE winds are
noted N of this boundary. A large area of gale force winds is N
of 27N and E of Florida to about 74W. The low pressure will move
across the far NW Atlantic waters this afternoon and will be N
of the area tonight, dragging a cold front with it. SE gales
will expand offshore Florida today, ahead of the low, then 
spread E and NE with time, ahead of the cold front. Behind the 
front, NW gales will also develop N of 27N later this afternoon. 
Scattered to numerous strong thunderstorms are expected ahead of 
the low and the cold front through tonight. The cold front will 
reach 31N79W to Central Cuba by this evening, then extend from 
31N68W to central Hispaniola by Mon evening. The front will then 
move slowly E into the middle of next week as high pressure 
builds behind it.

ATLC waters from 27N to 31N W of 77W

...GALE WARNING...

.TODAY...S winds 30 to 40 kt. Seas 15 to 20 ft. 
.TONIGHT...W winds 25 to 35 kt. Seas 13 to 18 ft. 
.MON...W winds 15 to 25 kt. Seas 11 to 16 ft, subsiding to 8 to
13 ft in the afternoon. 
.MON NIGHT...NW winds 10 to 20 kt. Seas 7 to 10 ft. 
.TUE...N winds 10 to 20 kt. Seas 7 to 10 ft. 
.TUE NIGHT...NE winds 15 to 25 kt. Seas 8 to 9 ft. 
.WED...NE winds 15 to 25 kt. Seas 7 to 9 ft. 
.WED NIGHT...NE winds 15 to 20 kt. Seas 7 to 9 ft. 
.THU...NE winds 10 to 20 kt. Seas 7 to 9 ft. 
.THU NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft. 

ATLC waters from 27N to 31N between 65W and 77W

...GALE WARNING...

.TODAY...SE winds 25 to 35 kt W of 70W, and SE 20 to 30 kt
elsewhere. W of 70W, seas 11 to 16 ft, building to 14 to 19 ft
in the afternoon. Elsewhere, seas 8 to 13 ft.
.TONIGHT...SW winds 30 to 40 kt W of 70W, and SE 25 to 35 kt
elsewhere. Seas 15 to 20 ft W of 70W, and 11 to 16 ft elsewhere.
.MON...W winds 15 to 25 kt W of 70W, and S 25 to 35 kt
elsewhere. Seas 13 to 18 ft. 
.MON NIGHT...W winds 10 to 15 kt W of 70W, and S 20 to 30 kt
elsewhere. Seas 10 to 15 ft W of 70W, and 11 to 16 ft elsewhere.
.TUE...NW winds 10 to 20 kt. Seas 9 to 14 ft. 
.TUE NIGHT...N winds 15 to 25 kt. Seas 9 to 12 ft. 
.WED...N winds 15 to 25 kt. Seas 10 to 14 ft. 
.WED NIGHT...N winds 15 to 25 kt. Seas 9 to 14 ft. 
.THU...N winds 15 to 25 kt. Seas 9 to 14 ft. 
.THU NIGHT...N winds 10 to 20 kt. Seas 9 to 13 ft. 

Bahamas N of 22N

.TODAY...S winds 20 to 30 kt. Seas 6 to 9 ft. 
.TONIGHT...W winds 10 to 20 kt. Seas 5 to 7 ft. 
.MON...NW winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON NIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...N winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE NIGHT...NE winds 15 to 25 kt. Seas 5 to 7 ft. 
.WED...NE winds 15 to 25 kt. Seas 5 to 7 ft. 
.WED NIGHT...NE winds 15 to 25 kt. Seas 6 to 8 ft. 
.THU...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.THU NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. 

ATLC waters from 22N to 27N between 65W and the Bahamas

.TODAY...SE winds 20 to 25 kt. Seas 10 to 15 ft W of 70W, and
9 to 11 ft elsewhere. 
.TONIGHT...SE winds 20 to 30 kt. Seas 10 to 14 ft. 
.MON...W of 70W, W winds 15 to 25 kt, shifting to NW 10 to 15 kt
in the afternoon. Elsewhere, SE winds 15 to 25 kt. Seas 9 to
14 ft. 
.MON NIGHT...W of 70W, NW winds less than 10 kt, increasing to
10 to 15 kt after midnight. Elsewhere, SE winds 10 to 20 kt.
Seas 8 to 12 ft. 
.TUE...NE winds 10 to 20 kt. Seas 8 to 11 ft. 
.TUE NIGHT...N winds 15 to 25 kt. Seas 8 to 11 ft. 
.WED...N winds 15 to 25 kt. Seas 9 to 12 ft. 
.WED NIGHT...N winds 15 to 25 kt. Seas 11 to 13 ft. 
.THU...N winds 15 to 20 kt. Seas 11 to 13 ft. 
.THU NIGHT...N winds 10 to 15 kt. Seas 10 to 11 ft. 

ATLC waters S of 22N W of 65W

.TODAY...SE winds 15 to 25 kt. Seas 7 to 10 ft. 
.TONIGHT...SE winds 15 to 25 kt. Seas 6 to 9 ft. 
.MON...SE winds 10 to 20 kt. Seas 6 to 9 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. 
.TUE...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.WED...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.WED NIGHT...NE winds 15 to 25 kt. Seas 8 to 11 ft. 
.THU...NE winds 10 to 20 kt. Seas 8 to 11 ft. 
.THU NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. 

ATLC waters from 19N to 22N between 55W and 65W

.TODAY...NE winds 15 to 20 kt. Seas 8 to 10 ft. 
.TONIGHT...E winds 15 to 20 kt. Seas 9 to 10 ft. 
.MON...E winds 10 to 20 kt. Seas 8 to 11 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 8 to 12 ft. 
.TUE...NE winds 10 to 20 kt. Seas 8 to 13 ft. 
.TUE NIGHT...NE winds less than 10 kt. Seas 8 to 13 ft. 
.WED...NW winds less than 10 kt. Seas 10 to 12 ft. 
.WED NIGHT...NW winds 10 kt. Seas 9 to 10 ft. 
.THU...NW winds 10 to 15 kt. Seas 8 to 10 ft. 
.THU NIGHT...N winds 10 to 15 kt. Seas 8 to 11 ft.