955 
FZNT31 KNHC 121508
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1108 AM EDT Wed Sep 12 2018

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...Tropical Storm Isaac near 15.0N 54.7W 1000 mb at
11 AM EDT moving W at 15 kt. Maximum sustained winds 50 kt gusts
60 kt. Isaac will move to 15.1N 56.7W this evening, 15.3N 59.4W
Thu morning, 15.3N 62.6W Thu evening, 15.4N 65.6W Fri morning,
and 15.5N 71.0W Sat morning. 

NW Caribbean W of 85W

.THIS AFTERNOON...E winds less than 10 kt. Seas 3 to 5 ft. 
.TONIGHT...E winds less than 10 kt. Seas 3 to 4 ft. 
.THU...E winds less than 10 kt. Seas 3 to 4 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft. 
.FRI NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt
after midnight. Seas 2 ft or less. 
.SAT...E winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less. 
.SAT NIGHT...NE winds less than 10 kt. Seas 2 ft or less. 
.SUN...NE winds less than 10 kt. Seas 2 ft or less. 

Caribbean N of 15N between 72W and 85W

.THIS AFTERNOON...E winds 10 to 15 kt S of 18N, and E less than
10 kt elsewhere. Seas 2 ft or less. 
.TONIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt
elsewhere. Seas 2 ft or less. 
.THU...E winds 10 to 15 kt S of 18N, and E less than 10 kt
elsewhere. Seas 3 ft. 
.THU NIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt
elsewhere. Seas 3 ft. 
.FRI...E winds 10 to 15 kt S of 18N, and NE less than 10 kt
elsewhere. Seas 3 ft. 
.FRI NIGHT...NE winds 10 to 20 kt S of 18N, and NE less than
10 kt elsewhere. Seas 3 to 5 ft S of 18N, and 2 ft or less
elsewhere. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. 

Caribbean from 11N to 15N W of 72W

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI NIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. 

SW Caribbean S of 11N

.THIS AFTERNOON...NE winds less than 10 kt. Seas 3 to 4 ft. 
.TONIGHT...E winds less than 10 kt. Seas 3 to 4 ft. 
.THU...E winds less than 10 kt. Seas 3 to 4 ft. 
.THU NIGHT...NE winds less than 10 kt. Seas 3 ft. 
.FRI...E winds less than 10 kt, shifting to S in the afternoon.
Seas 3 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 W less
than 10 kt after midnight. Seas 3 ft. 
.SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. 

Caribbean between 64W and 72W

...TROPICAL STORM WARNING...

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU...Variable winds less than 10 kt Gulf of Venezuela, and NE
10 to 20 kt elsewhere. Gulf of Venezuela, seas 3 ft in the
morning, subsiding to 2 ft or less. Elsewhere, seas 3 to 5 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. Gulf of
Venezuela, Variable winds less than 10 kt. Elsewhere, NE winds
15 to 25 kt, becoming N 30 to 40 kt after midnight. Seas 2 ft or
less Gulf of Venezuela, and 4 to 6 ft elsewhere. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. Variable winds less
than 10 kt Gulf of Venezuela, and NW 30 to 40 kt elsewhere. Seas
2 ft or less Gulf of Venezuela, and 6 to 8 ft elsewhere. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN...Gulf of Venezuela, SE winds less than 10 kt, shifting to
SW 10 kt in the afternoon. Elsewhere, SE winds 10 to 20 kt. Seas
2 ft or less Gulf of Venezuela, and 3 to 5 ft elsewhere. 

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

...TROPICAL STORM WARNING...

.THIS AFTERNOON...TROPICAL STORM CONDITIONS. NE winds 40 to
50 kt. Seas 8 to 11 ft. 
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 40 to
50 kt. Seas 8 to 13 ft. 
.THU...TROPICAL STORM CONDITIONS EXPECTED. E winds 35 to 45 kt.
Seas 9 to 14 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 35 to
45 kt. Seas 8 to 11 ft. 
.FRI...E winds 15 to 25 kt, shifting to SE 10 to 15 kt in the
afternoon. Seas 6 to 9 ft. 
.FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.SAT...E winds 10 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. 

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

...TROPICAL STORM WARNING...

.THIS AFTERNOON...TROPICAL STORM CONDITIONS. E winds 30 to
40 kt. Seas 6 to 8 ft. 
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 35 to
45 kt. Seas 6 to 9 ft. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 30 to
40 kt. Seas 6 to 8 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 30 to
40 kt. Seas 5 to 7 ft. 
.FRI...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 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 20 kt. Seas 4 to 6 ft. 

Synopsis for the the SW N ATLC including the Bahamas

.SYNOPSIS...Hurricane Florence near 29.8N 71.3W 943 mb at 11 AM 
EDT moving NW at 13 kt. Maximum sustained winds 115 kt gusts
140 
kt. Florence will move north of the area to 31.1N 73.1W this 
evening and reach 32.6N 75.1W Thu morning, Outside of the path
of
Florence, large swell generated by the hurricane will affect the
waters around the Bahamas and Florida. 

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

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas 7 to 10 ft. 
.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 10 to
20 kt. Seas 9 to 14 ft. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. NW winds 10 to
20 kt. Seas 8 to 13 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 10 to
20 kt. Seas 7 to 10 ft. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 10 to
20 kt. Seas 5 to 7 ft. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. 

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

...HURRICANE WARNING...

.THIS AFTERNOON...HURRICANE CONDITIONS. NW winds 85 to 105 kt W
of 70W, and SE 45 to 55 kt elsewhere. Seas 20 to 30 ft W of 70W,
and 12 to 17 ft elsewhere. 
.TONIGHT...HURRICANE CONDITIONS EXPECTED. W of 70W, W winds
85 to 105 kt, becoming SW 75 to 85 kt after midnight,Seas 16 to
26 ft, subsiding to 14 to 19 ft after midnight. Elsewhere, SE
winds 30 to 40 kt, diminishing to 15 to 25 kt after
midnight,Seas 8 to 13 ft, subsiding to 7 to 10 ft after
midnight. 
.THU...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, SW winds
35 to 45 kt, becoming S 20 to 30 kt in the afternoon,Seas 8 to
13 ft, subsiding to 7 to 10 ft in the afternoon. Elsewhere, SE
winds 10 to 20 kt,Seas 6 to 9 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S winds 15 to
25 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 7 to 10 ft W
of 70W, and 6 to 7 ft elsewhere. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. S winds 15 to 25 kt
W of 70W, and E 10 kt elsewhere. Seas 6 to 8 ft. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN...S winds 15 to 25 kt W of 70W, and SE 10 kt elsewhere.
Seas 6 to 8 ft. 

Bahamas N of 22N

.THIS AFTERNOON...E winds less than 10 kt. Seas 3 to 5 ft. 
.TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft. 
.THU...SE winds less than 10 kt. Seas 3 to 4 ft. 
.THU NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.SAT...SE winds less than 10 kt. Seas 3 to 5 ft. 
.SAT NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft. 
.SUN...SE winds 10 to 15 kt. Seas 3 to 4 ft. 

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

.THIS AFTERNOON...S winds 10 to 20 kt. Seas 6 to 9 ft. 
.TONIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. 
.THU...SE winds 10 to 15 kt. Seas 5 to 7 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. 
.FRI...E winds 10 to 15 kt. Seas 6 to 8 ft. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 7 to 8 ft. 
.SAT...W of 70W, SE winds 10 to 15 kt. Elsewhere, E winds 10 to
15 kt, diminishing to less than 10 kt in the afternoon. Seas
6 to 7 ft. 
.SAT NIGHT...W of 70W, SE winds 10 to 15 kt. Elsewhere, E winds
less than 10 kt, shifting to SE after midnight. Seas 6 to 7 ft. 
.SUN...SE winds 10 to 15 kt. Seas 5 to 6 ft. 

ATLC waters S of 22N W of 65W

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.TONIGHT...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 5 to 7 ft. 
.FRI...E winds 10 to 20 kt. Seas 6 to 8 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 4 to 6 ft. 
.SUN...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 6 to 9 ft. 
.TONIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. 
.THU...E winds 10 to 20 kt. Seas 8 to 11 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 8 to 10 ft. 
.FRI...E winds 10 to 20 kt. Seas 7 to 9 ft. 
.FRI NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt
after midnight. Seas 6 to 8 ft. 
.SAT...SE winds less than 10 kt. Seas 5 to 7 ft. 
.SAT NIGHT...SE winds less than 10 kt. Seas 5 to 6 ft. 
.SUN...SE winds 10 to 15 kt. Seas 5 ft.