755
FZNT31 KNHC 170853
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
453 AM EDT Fri Oct 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...A weak pressure gradient will support moderate or
lighter winds and slight to moderate seas over much of the basin
through Sat. A tropical wave will move across the tropical
Atlantic waters late this weekend with fresh to strong winds,
and rough seas accompanying the wave. The tropical wave is
forecast to enter the Caribbean waters by early next week,
bringing fresh winds and rough seas over the eastern Caribbean
waters.

NW Caribbean W of 85W

.TODAY...N winds less than 10 kt. Seas 2 ft or less.
.TONIGHT...E winds less than 10 kt. Seas 2 ft or less.
.SAT...SE winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...E winds less than 10 kt. Seas 2 ft or less,
building to 3 ft after midnight.
.SUN...E winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less.
.SUN NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.MON...NE winds less than 10 kt. Seas 2 ft or less.
.MON NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.TUE...NE winds less than 10 kt. Seas 2 ft or less.
.TUE NIGHT...E winds less than 10 kt. Seas 2 ft or less.

Caribbean N of 15N between 72W and 85W

.TODAY...E winds less than 10 kt. Seas 2 ft or less.
.TONIGHT...E winds less than 10 kt. Seas 2 ft or less.
.SAT...E winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...S of 18N, E winds less than 10 kt, increasing to
10 to 15 kt after midnight. Elsewhere, E winds less than 10 kt.
Seas 2 ft or less.
.SUN...E winds less than 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 3 ft.
.SUN NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft.
.MON...E winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft.

Caribbean from 11N to 15N W of 72W

.TODAY...Variable winds less than 10 kt. Seas 2 ft or less.
.TONIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.SAT...Within 90 nm of coast of Colombia, E winds 10 kt.
Elsewhere, Variable winds less than 10 kt, becoming E less than
10 kt in the afternoon. Seas 2 ft or less.
.SAT NIGHT...Within 90 nm of coast of Colombia, E winds 10 to
15 kt. Elsewhere, E winds less than 10 kt, increasing to 10 to
15 kt after midnight. Seas 2 ft or less, building to 3 ft after
midnight.
.SUN...E winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.MON...E winds 10 to 20 kt. Seas 4 to 6 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.

SW Caribbean S of 11N

.TODAY...Variable winds less than 10 kt. Seas 2 ft or less.
.TONIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.SAT...Variable winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.SUN...Variable winds less than 10 kt. Seas 2 ft or less.
.SUN NIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.MON...Variable winds less than 10 kt. Seas 2 ft or less,
building to 3 ft in the afternoon.
.MON NIGHT...Variable winds less than 10 kt. Seas 3 ft.
.TUE...SW winds less than 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...Variable winds less than 10 kt, becoming SW less
than 10 kt after midnight. Seas 3 to 4 ft.

Caribbean between 64W and 72W

.TODAY...S winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 ft elsewhere.
.TONIGHT...E winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 ft elsewhere.
.SAT...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela,
and 3 to 4 ft elsewhere.
.SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.SUN...E winds 10 to 20 kt. Seas 4 to 6 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.
.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.

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

.TODAY...S winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...SE winds less than 10 kt. Seas 4 to 6 ft.
.SAT...SE 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 4 to 6 ft.
.SUN...E winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft.
.MON...E winds 10 to 20 kt. Seas 7 to 10 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft.
.TUE...E winds 10 to 15 kt. Seas 6 to 8 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft.

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

.TODAY...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT...E winds 10 to 15 kt. Seas 4 to 6 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 9 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 6 to 9 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.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A cold front extends from 26N55W to 23N60W then
becomes stationary to Hispaniola. A reinforcing front extends
from 31N59W to the central Bahamas. The fronts will merge and
become stationary from 26N55W to the central Bahamas Sat and
dissipate through Sun. Fresh to strong winds are expected across
the waters east of 60W and N of 25N elsewhere through Sat before
winds diminish. The fronts have ushered in northerly swell
across the forecast waters. Rough seas will cover the waters E
of 60W and over the remainder of the waters N of 25N through the
end of the week, before spreading southward to cover much of the
waters E of 70W by early Sun. Seas will then subside from west
to east into early next week. Very rough seas will move into the
waters N of 27N and E of 70W today through Sun morning. High
pressure will build in the wake of the fronts with improving
conditions starting early next week.

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

.TODAY...NE winds 10 to 15 kt. Seas 7 to 9 ft.
.TONIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.SAT...NE winds 10 kt. Seas 5 to 7 ft.
.SAT NIGHT...SE winds less than 10 kt. Seas 5 to 7 ft.
.SUN...S winds 10 to 15 kt. Seas 6 to 7 ft.
.SUN NIGHT...S winds 10 to 15 kt. Seas 5 to 6 ft.
.MON...NW winds less than 10 kt. Seas 5 to 6 ft.
.MON NIGHT...N winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 4 to 5 ft.
.TUE...Variable winds less than 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...SW winds less than 10 kt. Seas 3 to 4 ft.

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

.TODAY...N winds 15 to 25 kt. Seas 8 to 13 ft.
.TONIGHT...N winds 10 to 20 kt W of 70W, and NW 15 to 25 kt
elsewhere. Seas 8 to 11 ft W of 70W, and 10 to 14 ft elsewhere.
.SAT...N winds 10 to 15 kt. Seas 8 to 11 ft W of 70W, and 11 to
16 ft elsewhere.
.SAT NIGHT...N winds 10 to 15 kt, shifting to NE after midnight.
Seas 8 to 11 ft W of 70W, and 10 to 14 ft elsewhere.
.SUN...NE winds less than 10 kt in the morning, becoming
variable winds less than 10 kt. Seas 8 to 11 ft.
.SUN NIGHT...Variable winds less than 10 kt, becoming SE less
than 10 kt after midnight. Seas 6 to 9 ft.
.MON...S winds less than 10 kt in the morning, becoming variable
winds less than 10 kt. Seas 6 to 8 ft.
.MON NIGHT...Variable winds less than 10 kt. Seas 5 to 6 ft.
.TUE...Variable winds less than 10 kt, becoming SE less than
10 kt in the afternoon. Seas 4 to 5 ft.
.TUE NIGHT...SE winds less than 10 kt. Seas 4 to 5 ft.

Bahamas N of 22N

.TODAY...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...E winds 10 to 20 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 4 to 6 ft.
.MON...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 5 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE NIGHT...NE 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 15 kt. Seas 6 to 8 ft.
.TONIGHT...N winds 10 to 15 kt. Seas 6 to 9 ft.
.SAT...N winds 10 to 15 kt. Seas 7 to 10 ft.
.SAT NIGHT...E winds 10 to 15 kt W of 70W, and NE less than
10 kt elsewhere. Seas 8 to 11 ft.
.SUN...E winds less than 10 kt. Seas 8 to 10 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 7 to 9 ft.
.MON...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 6 to 8 ft.
.MON NIGHT...E winds less than 10 kt. Seas 5 to 7 ft.
.TUE...E winds 10 to 15 kt. Seas 5 to 6 ft.
.TUE NIGHT...E 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 3 to 5 ft.
.TONIGHT...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 5 to 7 ft.
.SUN...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SUN NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. 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.
.TUE...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.

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

.TODAY...SW winds 10 to 20 kt. Seas 6 to 9 ft.
.TONIGHT...SW winds 10 to 20 kt. Seas 6 to 9 ft.
.SAT...SW winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 5 to 7 ft.
.SAT NIGHT...SE winds less than 10 kt. Seas 5 to 7 ft.
.SUN...E winds less than 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 6 to 9 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 8 to 10 ft.
.MON...E winds 10 to 15 kt. Seas 7 to 10 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 7 to 9 ft.
.TUE...E winds 10 to 15 kt. Seas 7 to 8 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft.