Offshore Forecast
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000
FZNT31 KNHC 211456
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1050 AM EDT Thu Sep 21 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...Hurricane Maria is centered at 20.2N 69.1W 960 mb at
11 AM EDT moving NW or 310 degrees at 8 kt. Maximum sustained
winds are 100 kt with gusts to 120 kt. Maria is forecast to
intensify to 105 kt gusts 130 kt near 21.0N 69.9W at 8 PM EDT
this evening, near 22.2N 70.7W at 8 AM EDT FRI, weaken to 100 kt
gusts to 120 kt near 23.6N 71.4W at 8 PM EDT Fri, weaken to 95
kt gusts to 115 kt near 25.1N 71.9W at 8 AM EFT Sat, near 28.2N
72.3W at 8 AM EDT Sun, then pass through 30.5N 71.5W at 8 AM EDT
Mon. Moderate to fresh trade winds will persist thereafter
across the basin. Moderate to locally fresh trades will return
across the area by Sun evening. Strong nocturnal trades will
resume along the NW coast of Venezuela, along the NE coast of
Colombia and across the Gulf of Honduras on Mon evening.

NW Caribbean W of 85W

.THIS AFTERNOON...E winds 10 to 15 kt, diminishing to less than
10 kt in the afternoon. Seas 3 to 4 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 3 ft.
.FRI...E winds less than 10 kt. Seas 3 ft.
.FRI NIGHT...NE winds less than 10 kt. Seas 3 ft.
.SAT...E winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.SUN...E winds less than 10 kt. Seas 2 ft or less.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to
3 ft after midnight.
.MON...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.

Caribbean N of 15N between 72W and 85W

.THIS AFTERNOON...N winds less than 10 kt S of 18N, and NE 10 to
15 kt elsewhere. S of 18N, seas 4 to 6 ft. Elsewhere, seas 3 ft,
subsiding to 2 ft or less.
.TONIGHT...N winds less than 10 kt S of 18N, and NE 10 to 15 kt
elsewhere. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere.
.FRI...N winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less.
.FRI NIGHT...NE winds less than 10 kt. Seas 2 ft or less.
.SAT...E winds less than 10 kt in the morning, becoming variable
winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...Variable winds less than 10 kt, becoming SE less
than 10 kt after midnight. Seas 2 ft or less.
.SUN...SE winds less than 10 kt. Seas 2 ft or less, building to
3 ft in the afternoon.
.SUN NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 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.

Caribbean from 11N to 15N W of 72W

.THIS AFTERNOON...NE winds less than 10 kt, becoming variable
winds less than 10 kt. Seas 4 to 6 ft.
.TONIGHT...N winds less than 10 kt. Seas 4 to 6 ft.
.FRI...Variable winds less than 10 kt. Seas 3 to 5 ft.
.FRI NIGHT...Variable winds less than 10 kt. Seas 3 ft.
.SAT...Variable winds less than 10 kt. Seas 3 ft.
.SAT NIGHT...Variable winds less than 10 kt, becoming E less
than 10 kt after midnight. Seas 2 ft or less.
.SUN...E winds less than 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 5 ft.
.MON...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.

SW Caribbean S of 11N

.THIS AFTERNOON...Variable winds less than 10 kt. Seas 3 to
5 ft.
.TONIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft.
.FRI...Variable winds less than 10 kt. Seas 3 to 5 ft.
.FRI NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.SAT...Variable winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less.
.SAT NIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.SUN...SE winds less than 10 kt. Seas 2 ft or less.
.SUN NIGHT...S winds less than 10 kt. Seas 2 ft or less.
.MON...SW winds less than 10 kt. Seas 2 ft or less.
.MON NIGHT...SW winds less than 10 kt. Seas 2 ft or less.

Caribbean between 64W and 72W

.THIS AFTERNOON...TROPICAL STORM CONDITIONS POSSIBLE. Variable
winds less than 10 kt Gulf of Venezuela, and S 15 to 25 kt
elsewhere. Seas 3 ft Gulf of Venezuela, and 6 to 8 ft elsewhere.
.TONIGHT...SE winds 10 to 15 kt. Seas 3 ft Gulf of Venezuela,
and 5 to 7 ft elsewhere.
.FRI...Variable winds less than 10 kt Gulf of Venezuela, and SE
10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and
4 to 6 ft elsewhere.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less Gulf of
Venezuela, and 4 to 6 ft elsewhere.
.SAT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.SUN...SE winds 10 to 20 kt. Seas 5 to 7 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 6 to 8 ft.

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

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.FRI...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.FRI NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 5 to 7 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 6 to 8 ft.
.MON 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

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...E 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 5 to 7 ft.
.SAT...E 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 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 6 to 8 ft.

SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS

.SYNOPSIS...Hurricane Maria is centered at 20.2N 69.1W 960 mb at
11 AM EDT moving NW or 310 degrees at 8 kt. Maximum sustained
winds are 100 kt with gusts to 120 kt. Maria is forecast to
intensify to 105 kt gusts 130 kt near 21.0N 69.9W at 8 PM EDT
this evening, near 22.2N 70.7W at 8 AM EDT FRI, weaken to 100 kt
gusts to 120 kt near 23.6N 71.4W at 8 PM EDT Fri, weaken to
95 kt gusts to 115 kt near 25.1N 71.9W at 8 AM EFT Sat, near
28.2N 72.3W at 8 AM EDT Sun, then pass through 30.5N 71.5W at 8
AM EDT Mon.

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

...TROPICAL STORM WARNING...

.THIS AFTERNOON...W of 70W, Variable winds less than 10 kt,
becoming NE 10 kt in the afternoon. Elsewhere, SE winds 10 to 15
kt. Seas 7 to 10 ft W of 70W, and 9 to 10 ft elsewhere.
.TONIGHT...E winds 10 to 15 kt. Seas 8 to 12 ft.
.FRI...E winds 10 to 15 kt. Seas 11 to 16 ft W of 70W, and 9 to
13 ft elsewhere.
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, NE
winds 10 to 20 kt, increasing to 20 to 30 kt after midnight.
Elsewhere, E winds 15 to 25 kt. Seas 14 to 19 ft W of 70W, and
10 to 15 ft elsewhere.
.SAT...HURRICANE CONDITIONS POSSIBLE. W of 70W, NE winds 30 to
40 kt, increasing to 45 to 55 kt in the afternoon,Seas 16 to 21
ft, building to 16 to 26 ft in the afternoon. Elsewhere, SE
winds 25 to 35 kt,Seas 11 to 16 ft.
.SAT NIGHT...HURRICANE CONDITIONS POSSIBLE.
.SUN...HURRICANE CONDITIONS POSSIBLE.
.SUN NIGHT...HURRICANE CONDITIONS POSSIBLE.
.MON...HURRICANE CONDITIONS POSSIBLE.
.MON NIGHT...N winds 10 to 15 kt. Seas 7 to 10 ft.

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

...TROPICAL STORM WARNING...

.THIS AFTERNOON...Variable winds less than 10 kt, becoming E
less than 10 kt in the afternoon. Seas 8 to 11 ft.
.TONIGHT...E winds less than 10 kt. Seas 8 to 12 ft.
.FRI...E winds less than 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 11 to 16 ft W of 70W, and 9 to 13 ft elsewhere.
.FRI NIGHT...E winds 10 to 15 kt. W of 70W, seas 13 to 17 ft,
building to 15 to 20 ft after midnight. Elsewhere, seas 10 to
15 ft.
.SAT...E winds 15 to 25 kt. Seas 14 to 19 ft, building to 17 to
22 ft in the afternoon.
.SAT NIGHT...E winds 25 to 35 kt. Seas 19 to 29 ft.
.SUN...SE winds 30 to 40 kt. Seas 21 to 31 ft.
.SUN NIGHT...S winds 30 to 40 kt. Seas 17 to 27 ft, subsiding to
17 to 22 ft after midnight.
.MON...SW winds 25 to 35 kt. Seas 13 to 18 ft.
.MON NIGHT...SW winds 15 to 25 kt. Seas 11 to 16 ft.

Bahamas N of 22N

...TROPICAL STORM WARNING...

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to 20
kt, increasing to 20 to 30 kt after midnight. Seas 4 to 6 ft.
.FRI...TROPICAL STORM CONDITIONS EXPECTED. NE winds 30 to 40 kt.
Seas 6 to 8 ft.
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 30 to
40 kt, becoming N 20 to 30 kt after midnight. Seas 7 to 10 ft.
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 20 to 30 kt.
Seas 7 to 10 ft.
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE.
.SUN...NW winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN NIGHT...NW winds 10 to 20 kt. Seas 6 to 8 ft.
.MON NIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft.

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

...HURRICANE WARNING...

.THIS AFTERNOON...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W,
NE winds 25 to 35 kt. Elsewhere, E winds 20 to 30 kt, increasing
to 30 to 40 kt in the afternoon. Seas 10 to 15 ft.
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, NE
winds 40 to 50 kt, becoming E 80 to 90 kt after midnight,Seas 13
to 18 ft, building to 17 to 22 ft after midnight. Elsewhere, E
winds 40 to 50 kt, increasing to 75 to 85 kt after midnight,Seas
14 to 19 ft.
.FRI...HURRICANE CONDITIONS EXPECTED. W of 70W, NE winds 75 to
95 kt. Elsewhere, SE winds 75 to 85 kt, diminishing to 50 to 60
kt in the afternoon. Seas 21 to 31 ft W of 70W, and 14 to 19 ft
elsewhere.
.FRI NIGHT...HURRICANE CONDITIONS EXPECTED. NE winds 80 to 90 kt
W of 70W, and SE 40 to 50 kt elsewhere. Seas 23 to 33 ft W of
70W, and 13 to 18 ft elsewhere.
.SAT...HURRICANE CONDITIONS POSSIBLE. NW winds 75 to 85 kt W of
70W, and SE 30 to 40 kt elsewhere. Seas 23 to 33 ft W of 70W,
and 12 to 17 ft elsewhere.
.SAT NIGHT...HURRICANE CONDITIONS POSSIBLE.
.SUN...HURRICANE CONDITIONS POSSIBLE.
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE.
.MON...TROPICAL STORM CONDITIONS POSSIBLE.
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE.

ATLC waters S of 22N W of 65W

...HURRICANE WARNING...

HURRICANE CONDITIONS. E winds 80 to 90 kt.
Seas 15 to 20 ft.
.TONIGHT...HURRICANE CONDITIONS EXPECTED. E winds 85 to 95 kt.
Seas 16 to 21 ft.
.FRI...HURRICANE CONDITIONS EXPECTED. S winds 80 to 90 kt,
diminishing to 65 to 75 kt in the afternoon. Seas 10 to 15 ft.
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S winds 30 to
40 kt, becoming SW 20 to 30 kt after midnight. Seas 9 to 14 ft.
.SAT...SW winds 20 to 30 kt. Seas 7 to 10 ft.
.SAT NIGHT...S winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN...S winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN NIGHT...S winds 10 to 15 kt. Seas 6 to 8 ft.
.MON...S winds 10 to 15 kt. Seas 5 to 7 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.

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

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



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