Offshore Forecast
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177
FZNT31 KNHC 122020
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
420 PM EDT Sun Oct 12 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...High pressure over the central Atlantic will support
moderate to locally fresh trade winds and moderate seas across
the eastern Caribbean through mid week. Meanwhile, a weak
pressure pattern will maintain moderate or lighter winds and
slight to moderate seas elsewhere through the forecast period. A
weak cyclonic circulation may develop over the NW Caribbean
toward midweek.

NW Caribbean W of 85W

.TONIGHT...E winds less than 10 kt. Seas 3 to 4 ft.
.MON...Variable winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less.
.MON NIGHT...E winds less than 10 kt. Seas 2 ft or less,
building to 3 to 4 ft after midnight.
.TUE...NE winds less than 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...NE winds less than 10 kt. Seas 3 ft.
.WED...N winds less than 10 kt. Seas 3 to 4 ft.
.WED NIGHT...E winds less than 10 kt. Seas 3 to 5 ft.
.THU...W winds less than 10 kt. Seas 3 to 5 ft.
.THU NIGHT...E winds less than 10 kt. Seas 3 ft.
.FRI...SE winds less than 10 kt. Seas 2 ft or less.
.FRI NIGHT...E winds less than 10 kt. Seas 2 ft or less.

Caribbean N of 15N between 72W and 85W

.TONIGHT...SE winds less than 10 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less.
.MON...SE winds less than 10 kt. Seas 2 ft or less.
.MON NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.TUE...E winds less than 10 kt. Seas 2 ft or less.
.TUE NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.WED...E winds less than 10 kt. Seas 2 ft or less.
.WED NIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.THU...Variable winds less than 10 kt. Seas 2 ft or less.
.THU NIGHT...Variable winds less than 10 kt, becoming NE less
than 10 kt after midnight. Seas 2 ft or less.
.FRI...E winds less than 10 kt. Seas 2 ft or less.
.FRI NIGHT...E winds less than 10 kt. Seas 2 ft or less.

Caribbean from 11N to 15N W of 72W

.TONIGHT...SW winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less.
.MON...SE winds less than 10 kt. Seas 2 ft or less.
.MON NIGHT...NE winds 10 to 15 kt within 90 nm of coast of
Colombia, and E less than 10 kt elsewhere. Seas 2 ft or less.
.TUE...E winds 10 to 15 kt within 90 nm of coast of Colombia,
and E less than 10 kt elsewhere. Seas 2 ft or less.
.TUE NIGHT...NE winds less than 10 kt. Seas 2 ft or less.
.WED...NE winds less than 10 kt in the morning, becoming
variable winds less than 10 kt. Seas 2 ft or less.
.WED NIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.THU...Variable winds less than 10 kt. Seas 2 ft or less.
.THU NIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.FRI...Variable winds less than 10 kt. Seas 2 ft or less.
.FRI NIGHT...Variable winds less than 10 kt, becoming E less
than 10 kt after midnight. Seas 2 ft or less.

SW Caribbean S of 11N

.TONIGHT...S winds less than 10 kt. Seas 2 ft or less.
.MON...S winds less than 10 kt. Seas 2 ft or less.
.MON NIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.TUE...Variable winds less than 10 kt. Seas 2 ft or less.
.TUE NIGHT...NW winds less than 10 kt. Seas 2 ft or less.
.WED...Variable winds less than 10 kt. Seas 2 ft or less.
.WED NIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.THU...Variable winds less than 10 kt. Seas 2 ft or less.
.THU NIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.FRI...Variable winds less than 10 kt. Seas 2 ft or less.
.FRI NIGHT...Variable winds less than 10 kt. Seas 2 ft or less.

Caribbean between 64W and 72W

.TONIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less Gulf of Venezuela, and 3 to
4 ft elsewhere.
.MON...NE winds less than 10 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. Seas 3 to 4 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft.
.TUE NIGHT...E winds less than 10 kt. Seas 3 ft.
.WED...SE winds less than 10 kt. Seas 3 ft.
.WED NIGHT...SE winds less than 10 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less.
.THU...S winds less than 10 kt. Seas 2 ft or less.
.THU NIGHT...SE winds less than 10 kt. Seas 2 ft or less.
.FRI...SE winds less than 10 kt. Seas 2 ft or less.
.FRI NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less.

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

.TONIGHT...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...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...E winds 10 to 15 kt, shifting to SE in the afternoon.
Seas 3 to 5 ft.
.TUE NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft.
.WED...S winds less than 10 kt. Seas 3 to 5 ft.
.WED NIGHT...S winds less than 10 kt. Seas 3 to 5 ft.
.THU...S winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...S winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft.

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

.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.MON...E winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft.
.TUE NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft.
.WED...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.WED NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.THU...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.THU NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A 1008 mb gale center, remnants of Jerry, is currently
near 31N62W. Strong to gale force winds and rough to very rough
seas will persist north of 29N between 58W and 62W through this
evening. Meanwhile, a 993 mb gale center is centered off the
Carolinas. Its associated frontal boundary will be reinforced on
Mon, and the merged front will extend from 31N71W to the central
Bahamas and western Cuba as a cold front by Mon evening, and from
31N66W to the central Bahamas and central Cuba by Tue evening.
Fresh to strong winds and rough seas are expected on either side
of the front across the waters N of 27N by late Tue.

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

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

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

.TONIGHT...SW winds 10 to 20 kt. Seas 7 to 10 ft.
.MON...SW winds 10 to 15 kt. Seas 6 to 9 ft.
.MON NIGHT...SW winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 5 to 7 ft.
.TUE...W winds 10 to 15 kt. Seas 6 to 8 ft.
.TUE NIGHT...W winds 10 to 20 kt. Seas 7 to 10 ft.
.WED...NW winds 10 to 20 kt. Seas 7 to 10 ft.
.WED NIGHT...N winds 10 to 20 kt. Seas 7 to 10 ft.
.THU...N winds 10 to 20 kt. Seas 7 to 10 ft.
.THU NIGHT...N winds 10 to 20 kt. Seas 7 to 10 ft.
.FRI...N winds 10 to 20 kt. Seas 8 to 11 ft.
.FRI NIGHT...N winds 10 to 20 kt. Seas 8 to 11 ft.

Bahamas N of 22N

.TONIGHT...SW winds less than 10 kt, shifting to SE after
midnight. Seas 3 to 5 ft.
.MON...S winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft.
.MON NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.TUE...N winds less than 10 kt. Seas 2 ft or less.
.TUE NIGHT...N winds 10 to 15 kt. Seas 2 ft or less, building to
3 to 4 ft after midnight.
.WED...N winds 10 to 15 kt. Seas 3 to 5 ft.
.WED NIGHT...N winds less than 10 kt. Seas 3 to 5 ft.
.THU...N winds less than 10 kt. Seas 3 to 5 ft.
.THU NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 5 ft.
.FRI...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft.

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

.TONIGHT...S winds 10 to 15 kt. Seas 6 to 9 ft W of 70W, and
4 to 6 ft elsewhere.
.MON...S winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 5 to 7 ft.
.MON NIGHT...SE winds less than 10 kt. Seas 4 to 5 ft.
.TUE...SW winds less than 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...SW winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 4 to 6 ft.
.WED...W winds 10 to 20 kt. Seas 5 to 7 ft.
.WED NIGHT...NW winds 10 to 20 kt. Seas 5 to 7 ft.
.THU...NW winds 10 to 15 kt. Seas 5 to 7 ft.
.THU NIGHT...N winds 10 to 15 kt. Seas 6 to 8 ft.
.FRI...N winds 10 to 15 kt. Seas 6 to 8 ft.
.FRI NIGHT...N winds 10 to 15 kt. Seas 6 to 9 ft.

ATLC waters S of 22N W of 65W

.TONIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.MON...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...SE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft.
.TUE NIGHT...SE winds less than 10 kt. Seas 3 ft.
.WED...W winds less than 10 kt. Seas 3 ft.
.WED NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft.
.THU...NW winds less than 10 kt. Seas 3 to 5 ft.
.THU NIGHT...NW winds less than 10 kt. Seas 3 to 5 ft.
.FRI...N winds less than 10 kt. Seas 3 to 5 ft.
.FRI NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft.

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

.TONIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft.
.MON...E winds 10 to 15 kt. Seas 5 to 6 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 4 to 5 ft.
.TUE NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft.
.WED...S winds less than 10 kt. Seas 3 to 4 ft.
.WED NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft.
.THU...SW winds 10 to 15 kt. Seas 4 to 6 ft.
.THU NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft.
.FRI...SW winds 10 to 15 kt. Seas 5 to 7 ft.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft.