Offshore Forecast
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674
FZNT31 KNHC 250241
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1041 PM EDT Sun Sep 24 2017

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 ATLC from 07N to 19N
between 55W and 64W

.SYNOPSIS...Strong nocturnal trades will develop Monday along
the NW coast of Venezuela and NE coast of Colombia through early
Thursday. Pulsing fresh to strong E to SE winds are also
expected across the Gulf of Honduras during the evening hours
beginning on Monday.

NW Caribbean W of 85W

.OVERNIGHT...E winds 10 to 20 kt. Seas 2 ft or less, building to
3 ft after midnight.
.MON...SE winds 10 to 20 kt. Seas 3 to 4 ft.
.MON NIGHT...SE winds 15 to 25 kt. Seas 4 to 6 ft.
.TUE...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.TUE NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft.
.WED...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.WED NIGHT...SE winds 15 to 25 kt. Seas 4 to 6 ft.
.THU...SE winds 15 to 25 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.FRI...SE winds 10 to 20 kt. Seas 4 to 6 ft.

Caribbean N of 15N between 72W and 85W

.OVERNIGHT...SE winds 10 to 20 kt. Seas 2 ft or less.
.MON...SE winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and 2 ft
or less elsewhere.
.MON NIGHT...E winds 10 to 20 kt. S of 18N, seas 3 to 5 ft.
Elsewhere, seas 2 ft or less, building to 3 ft after midnight.
.TUE...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.TUE NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.WED...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.THU...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.FRI...E winds 10 to 20 kt. Seas 4 to 6 ft.

Caribbean from 11N to 15N W of 72W

.OVERNIGHT...E winds 10 to 20 kt. Seas 3 ft.
.MON...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.MON NIGHT...NE winds 10 to 20 kt within 90 nm of coast of
Colombia, and E 15 to 25 kt elsewhere. Seas 3 to 5 ft.
.TUE...E winds 10 to 20 kt within 90 nm of coast of Colombia,
and SE 15 to 25 kt elsewhere. Seas 4 to 6 ft.
.TUE NIGHT...E winds 10 to 20 kt within 90 nm of coast of
Colombia, and SE 15 to 25 kt elsewhere. Seas 4 to 6 ft.
.WED...E winds 10 to 20 kt within 90 nm of coast of Colombia,
and SE 15 to 25 kt elsewhere. Seas 5 to 7 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.THU...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.FRI...SE winds 10 to 20 kt. Seas 4 to 6 ft.

SW Caribbean S of 11N

.OVERNIGHT...E winds less than 10 kt. Seas 2 ft or less.
.MON...Variable winds less than 10 kt. Seas 2 ft or less.
.MON NIGHT...Variable winds less than 10 kt, becoming S less
than 10 kt after midnight. Seas 2 ft or less.
.TUE...S winds less than 10 kt. Seas 2 ft or less.
.TUE NIGHT...Variable winds less than 10 kt, becoming S less
than 10 kt after midnight. Seas 2 ft or less.
.WED...S winds less than 10 kt. Seas 3 to 4 ft.
.WED NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.THU...S winds less than 10 kt. Seas 3 to 4 ft.
.THU NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft.
.FRI...S winds less than 10 kt. Seas 3 to 4 ft.

Caribbean between 64W and 72W

.OVERNIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.MON...E winds 10 to 20 kt. Seas 4 to 6 ft.
.MON NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft.
.TUE...E winds 15 to 25 kt. Seas 4 to 6 ft Gulf of Venezuela,
and 6 to 8 ft elsewhere.
.TUE NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft.
.WED...E winds 15 to 25 kt. Seas 5 to 7 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.FRI...E winds 10 to 20 kt. Seas 4 to 6 ft.

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

.OVERNIGHT...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 20 kt. Seas 4 to 6 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 15 kt. Seas 5 to 7 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU...E winds 10 to 20 kt. Seas 6 to 8 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.FRI...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

.OVERNIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.MON...E winds 10 to 20 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 5 to 7 ft.
.TUE NIGHT...E 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.
.THU...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.FRI...E winds 10 to 20 kt. Seas 4 to 6 ft.

SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS

.SYNOPSIS...Hurricane Maria centered at 30.0N 73.0W 950 mb at
11 PM EDT moving N or 360 degrees at 7 kt. Maximum sustained
winds are 80 kt with gusts to 100 kt. Maria is forecast to reach
near 30.8N 73.2W at 8 AM EDT Mon, weaken to 75 kt gusts 90 kt
near 31.9N 73.3W at 8 PM EDT Mon, and move further from the area
near 33.0N 73.5W at 8 AM EDT Tue. A trough will extend SW from
the N-central waters to the Central Bahamas in the wake of Maria
through Wednesday night, and become diffuse on Thursday as high
pressure builds westward across the eastern portion of the area.

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

.OVERNIGHT...N winds 10 to 20 kt. Seas 11 to 16 ft.
.MON...N winds 10 to 20 kt. Seas 11 to 16 ft.
.MON NIGHT...N winds 10 to 20 kt. Seas 9 to 14 ft.
.TUE...NW winds 10 to 20 kt. Seas 8 to 13 ft.
.TUE NIGHT...W winds 10 to 20 kt. Seas 8 to 11 ft.
.WED...W winds 10 to 15 kt. Seas 6 to 9 ft.
.WED NIGHT...NW winds 10 to 15 kt. Seas 6 to 8 ft.
.THU...NW winds 10 kt. Seas 6 to 8 ft.
.THU NIGHT...W winds 10 kt. Seas 5 to 7 ft.
.FRI...W winds less than 10 kt. Seas 4 to 6 ft.

ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W

...HURRICANE WARNING...

.OVERNIGHT...HURRICANE CONDITIONS. W of 70W, W winds 75 to
85 kt, diminishing to 65 to 75 kt after midnight. Elsewhere, S
winds 25 to 35 kt. Seas 21 to 31 ft W of 70W, and 13 to 18 ft
elsewhere.
.MON...HURRICANE CONDITIONS EXPECTED. W winds 65 to 75 kt W of
70W, and S 25 to 35 kt elsewhere. W of 70W, seas 19 to 29 ft,
subsiding to 16 to 26 ft in the afternoon. Elsewhere, seas 13 to
18 ft.
.MON NIGHT...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, W
winds 50 to 60 kt, diminishing to 40 to 50 kt after
midnight,Seas 17 to 22 ft, subsiding to 14 to 19 ft after
midnight. Elsewhere, S winds 20 to 30 kt,Seas 12 to 17 ft.
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, W winds
30 to 40 kt, diminishing to 20 to 30 kt in the afternoon.
Elsewhere, S winds 20 to 30 kt. Seas 11 to 16 ft.
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W winds 20 to
30 kt W of 70W, and S 15 to 25 kt elsewhere. Seas 9 to 14 ft W
of 70W, and 8 to 11 ft elsewhere.
.WED...SW winds 10 to 20 kt. Seas 8 to 11 ft.
.WED NIGHT...W winds 10 to 20 kt. Seas 7 to 10 ft.
.THU...W winds 10 to 20 kt. Seas 7 to 10 ft.
.THU NIGHT...SW winds 10 to 20 kt. Seas 7 to 10 ft.
.FRI...SW winds 10 to 20 kt. Seas 6 to 8 ft W of 70W, and 8 to
11 ft elsewhere.

Bahamas N of 22N

.OVERNIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft.
.MON...W winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 4 to 6 ft.
.MON NIGHT...NW winds less than 10 kt. Seas 4 to 6 ft.
.TUE...W winds less than 10 kt. Seas 3 to 5 ft.
.TUE NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft.
.WED...SE winds less than 10 kt. Seas 3 to 4 ft.
.WED NIGHT...W winds less than 10 kt. Seas 3 ft.
.THU...Variable winds less than 10 kt, becoming SW less than
10 kt in the afternoon. Seas 3 ft.
.THU NIGHT...S winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft.
.FRI...SE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft.

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

.OVERNIGHT...SW winds 15 to 25 kt W of 70W, and S 10 to 20 kt
elsewhere. Seas 10 to 15 ft W of 70W, and 8 to 11 ft elsewhere.
.MON...SW winds 10 to 20 kt. Seas 10 to 15 ft W of 70W, and 8 to
11 ft elsewhere.
.MON NIGHT...SW winds 10 to 20 kt. Seas 8 to 11 ft.
.TUE...SW winds 10 to 20 kt. Seas 7 to 9 ft.
.TUE NIGHT...S winds 10 to 15 kt. Seas 6 to 8 ft.
.WED...S winds 10 to 15 kt. Seas 5 to 7 ft.
.WED NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft.
.THU...W of 70W, W winds less than 10 kt, shifting to SW in the
afternoon. Elsewhere, S winds 10 to 15 kt. Seas 6 to 7 ft.
.THU NIGHT...S winds 10 to 15 kt. Seas 6 to 7 ft.
.FRI...S winds 10 to 15 kt. Seas 6 to 7 ft.

ATLC waters S of 22N W of 65W

.OVERNIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.MON...S winds 10 to 15 kt. Seas 4 to 6 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.WED...SE winds 10 to 20 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 3 to 5 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...SE winds 10 to 15 kt. Seas 4 to 6 ft.

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

.OVERNIGHT...SE winds 10 to 15 kt. Seas 5 to 6 ft.
.MON...SE winds 10 to 15 kt. Seas 5 to 6 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.TUE...SE winds 10 to 15 kt. Seas 6 to 7 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft.
.WED...E winds 10 to 20 kt. Seas 6 to 7 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft.
.THU...E winds 10 to 15 kt. Seas 6 to 7 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft.
.FRI...E winds 10 to 15 kt. Seas 6 to 7 ft.



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