000
FZNT31 KNHC 120906
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
406 AM EST Thu Dec 12 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...Strong high pressure building over the Gulf of
Mexico and in the wake of a cold front extending acrosss the
northern Bahamas to western Cuba and into Honduras will continue
to support fresh to strong NE winds and moderate to rough seas
in the NW Caribbean and the Windward Passage through Sun
morning. Afterward, moderate to fresh NE winds will further
diminish to gentle to moderate speeds by Mon afternoon as the
broad high pressure shift NE and then eastward to the
north-central Atlantic waters. The high pressure will also
support fresh to strong NE winds over the central and SW
Caribbean through Sat morning. Moderate to fresh NE winds over
the E Caribbean will diminish on Fri as a surface trough enters
the region. Otherwise, the front will stall this morning over
the NW Caribbean before dissipating tonight. 

NW Caribbean W of 85W

.TODAY...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.TONIGHT...NE winds 10 to 20 kt. Seas 6 to 9 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 8 ft. 
.SAT NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.SUN...NE winds 10 to 20 kt. Seas 6 to 8 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 15 kt, diminishing to less than
10 kt after midnight. Seas 4 to 6 ft. 

Caribbean N of 15N between 72W and 85W

.TODAY...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.TONIGHT...NE winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. 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 S of 18N, and NE 15 to 25 kt
elsewhere. Seas 6 to 8 ft. 
.SAT...NE winds 15 to 25 kt. Seas 6 to 8 ft. 
.SAT NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.SUN...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. 

Caribbean from 11N to 15N W of 72W

.TODAY...E winds 15 to 25 kt within 90 nm of coast of Colombia,
and NE 10 to 20 kt elsewhere. Seas 6 to 8 ft. 
.TONIGHT...E winds 15 to 25 kt within 90 nm of coast of
Colombia, and NE 10 to 20 kt elsewhere. Seas 6 to 8 ft. 
.FRI...E winds 15 to 25 kt within 90 nm of coast of Colombia,
and NE 10 to 20 kt elsewhere. Seas 6 to 8 ft. 
.FRI NIGHT...NE winds 15 to 25 kt within 90 nm of coast of
Colombia, and NE 10 to 20 kt elsewhere. Seas 6 to 8 ft. 
.SAT...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.SAT NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.SUN...NE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 4 to 6 ft. 
.SUN NIGHT...NE winds 10 to 15 kt, diminishing to less than
10 kt after midnight. Seas 3 to 5 ft. 
.MON...NE winds less than 10 kt. Seas 3 to 4 ft. 
.MON NIGHT...NE winds 10 to 15 kt. Seas 3 ft. 

SW Caribbean S of 11N

.TODAY...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.TONIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.FRI...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.FRI NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.SAT...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.SAT NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.SUN...NE winds 10 to 15 kt, shifting to N in the afternoon.
Seas 4 to 6 ft. 
.SUN NIGHT...N winds less than 10 kt. Seas 4 to 5 ft. 
.MON...N winds less than 10 kt. Seas 3 to 4 ft. 
.MON NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. 

Caribbean between 64W and 72W

.TODAY...NE winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and
4 to 6 ft elsewhere. 
.TONIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft Gulf of
Venezuela, and 5 to 7 ft elsewhere. 
.FRI...NE winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and
5 to 7 ft elsewhere. 
.FRI NIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft Gulf of
Venezuela, and 4 to 6 ft elsewhere. 
.SAT...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 4 to 6 ft. 
.SAT NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. 
.SUN...SE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 

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

.TODAY...NE winds 10 to 15 kt, shifting to NW in the afternoon.
Seas 5 to 7 ft. 
.TONIGHT...NW winds less than 10 kt, shifting to SW after
midnight. Seas 4 to 6 ft. 
.FRI...S winds less than 10 kt. Seas 4 to 6 ft. 
.FRI NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.SAT...SE winds 10 to 15 kt. Seas 5 to 7 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 4 to 6 ft. 

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

.TODAY...E winds less than 10 kt. Seas 3 to 5 ft. 
.TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft. 
.FRI...E winds less than 10 kt. Seas 3 to 5 ft. 
.FRI NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 5 ft. 
.SAT...E winds 10 to 15 kt. Seas 4 to 6 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 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. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A cold front extending from 31N74W SW to the
northern Bahamas and into central Cuba will stall from 31N68W to
the central Bahamas this evening and dissipate tonight into 
early Fri. Fresh to strong northerly winds and rough seas 
affecting the Florida offshore waters, and the northern and 
central Bahamas will prevail and expand in areal coverage through
the weekend as strong high pressure building in the wake of the 
front will tighten the pressure gradient against an approaching 
surface trough from the east. Frequent gust to gale force winds 
will likely develop over the northern Bahamas offshore waters Sat
through Sun. Winds will start to gradually weaken across the 
region Sun night into Mon.

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

.TODAY...N winds 15 to 25 kt. Seas 8 to 11 ft. 
.TONIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.FRI...NE winds 20 to 25 kt. Seas 7 to 9 ft. 
.FRI NIGHT...E winds 15 to 25 kt. Seas 8 to 12 ft. 
.SAT...NE winds 20 to 30 kt. Seas 11 to 15 ft. 
.SAT NIGHT...E winds 20 to 30 kt. Seas 13 to 16 ft.
.SUN...NE winds 15 to 25 kt. Seas 13 to 16 ft. 
.SUN NIGHT...E winds 15 to 25 kt. Seas 12 to 15 ft. 
.MON...E winds 15 to 25 kt. Seas 11 to 14 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 10 to 12 ft. 

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

...GALE CONDITIONS POSSIBLE...

.TODAY...N winds 15 to 25 kt W of 70W, and E less than 10 kt
elsewhere. Seas 6 to 9 ft W of 70W, and 5 to 6 ft elsewhere. 
.TONIGHT...NE winds 15 to 25 kt W of 70W, and NE 10 to 20 kt
elsewhere. Seas 8 to 11 ft W of 70W, and 6 to 9 ft elsewhere. 
.FRI...NE winds 15 to 25 kt. Seas 8 to 11 ft. 
.FRI NIGHT...NE winds 20 to 30 kt. Seas 10 to 14 ft. 
.SAT...NE winds 25 to 35 kt. Seas 11 to 17 ft. 
.SAT NIGHT...NE winds 25 to 35 kt. Seas 12 to 18 ft. 
.SUN...NE to E winds 25 to 35 kt. Seas 11 to 17 ft. 
.SUN NIGHT...NE winds 20 to 25 kt. Seas 13 to 16 ft. 
.MON...E winds 15 to 25 kt. Seas 12 to 15 ft. 
.MON NIGHT...E winds 15 to 20 kt. Seas 10 to 13 ft. 

Bahamas N of 22N

.TODAY...NE winds 15 to 25 kt. Seas 4 to 6 ft. 
.TONIGHT...NE winds 15 to 25 kt. Seas 5 to 7 ft. 
.FRI...NE winds 15 to 25 kt. Seas 5 to 7 ft. 
.FRI NIGHT...NE winds 15 to 25 kt. Seas 6 to 8 ft. 
.SAT...NE winds 15 to 25 kt. Seas 7 to 10 ft. 
.SAT NIGHT...NE winds 15 to 25 kt. Seas 8 to 11 ft. 
.SUN...NE winds 15 to 25 kt. Seas 8 to 11 ft. 
.SUN NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. 
.MON...NE winds 10 to 20 kt. Seas 7 to 10 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. 

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

.TODAY...W of 70W, E winds less than 10 kt, shifting to NE in
the afternoon. Elsewhere, NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.TONIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. 
.FRI...NE winds 15 to 25 kt. Seas 8 to 12 ft. 
.FRI NIGHT...NE winds 20 to 25 kt. Seas 10 to 14 ft. 
.SAT...NE winds 20 to 30 kt. Seas 11 to 16 ft. 
.SAT NIGHT...E winds 20 to 30 kt. Seas 12 to 17 ft.
.SUN...E winds 15 to 25 kt. Seas 11 to 16 ft. 
.SUN NIGHT...E winds 15 to 25 kt. Seas 10 to 15 ft. 
.MON...E winds 15 to 25 kt. Seas 9 to 14 ft. 
.MON NIGHT...E winds 15 to 25 kt. Seas 9 to 12 ft. 

ATLC waters S of 22N W of 65W

.TODAY...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.TONIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.FRI...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.FRI NIGHT...NE winds 15 to 25 kt. Seas 8 to 11 ft. 
.SAT...NE winds 15 to 25 kt. Seas 8 to 11 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. 
.SUN...E winds 10 to 15 kt. Seas 7 to 10 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft. 
.MON...E winds 10 to 15 kt. Seas 6 to 8 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. 

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

.TODAY...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.TONIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft. 
.FRI...SE winds 10 to 15 kt. Seas 7 to 10 ft. 
.FRI NIGHT...SE winds 10 to 20 kt. Seas 7 to 9 ft. 
.SAT...SE winds 10 to 20 kt. Seas 7 to 10 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. 
.SUN...E winds 10 to 20 kt. Seas 8 to 9 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 8 ft. 
.MON...E winds 10 to 15 kt. Seas 7 to 8 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 7 to 8 ft.