182 
FZNT31 KNHC 110910
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
510 AM EDT Tue Sep 11 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 14.6N 48.1W 997 mb at 5 AM
EDT moving W at 12 kt. Maximum sustained winds 60 kt gusts 75 
kt. Isaac will move to 14.6N 50.1W this afternoon, then become a 
minimal hurricane tonight near 14.6N 52.6W. Isaac will continue 
to 14.8N 55.0W Wed afternoon, then become a tropical storm again 
near 15.1N 57.6W Wed night. Isaac will continue weakening and 
head W to near 15.5N 62.8W Thu night, 15.6N 67.4W Fri night and 
to 15.8N 72.0W Sat night. 

NW Caribbean W of 85W

.TODAY...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.TONIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. 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. Seas 3 to 4 ft. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft.
.SAT...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 2 ft or less. 

Caribbean N of 15N between 72W and 85W

.TODAY...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.WED...S of 18N, E winds 10 to 15 kt. Elsewhere, E winds 10 to
15 kt, diminishing to less than 10 kt in the afternoon. Seas
3 to 4 ft. 
.WED NIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt
elsewhere. Seas 3 ft. 
.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 ft. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 

Caribbean from 11N to 15N W of 72W

.TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI NIGHT...N winds less than 10 kt within 90 nm of coast of
Colombia, and E 10 to 15 kt elsewhere. Seas 3 to 4 ft. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 

SW Caribbean S of 11N

.TODAY...NE winds 10 to 15 kt, shifting to N in the afternoon.
Seas 3 to 5 ft. 
.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED...NE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft. 
.WED NIGHT...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...S winds less than 10 kt. Seas 3 ft. 
.FRI NIGHT...Variable winds less than 10 kt. Seas 3 ft. 
.SAT...Variable winds less than 10 kt. Seas 3 ft. 

Caribbean between 64W and 72W

.TODAY...N winds less than 10 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. Gulf of Venezuela, seas 3 ft in the morning,
subsiding to 2 ft or less. Elsewhere, seas 3 to 5 ft. 
.TONIGHT...NE winds less than 10 kt Gulf of Venezuela, and E
10 to 20 kt elsewhere. Seas 3 to 5 ft. 
.WED...N winds less than 10 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 3 to 5 ft. 
.WED NIGHT...Variable winds less than 10 kt Gulf of Venezuela,
and NE 10 to 20 kt elsewhere. 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 POSSIBLE. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 

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

...TROPICAL STORM WARNING...

.TODAY...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.TONIGHT...NE winds 20 to 30 kt. Seas 4 to 6 ft, building to
6 to 9 ft after midnight. 
.WED...TROPICAL STORM CONDITIONS EXPECTED. NE winds 20 to
30 kt, increasing to 45 to 55 kt in the afternoon. Seas 8 to
11 ft. 
.WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. NE winds 45 to
55 kt. Seas 9 to 14 ft. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. E winds 45 to 55 kt.
Seas 10 to 15 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI NIGHT...E winds 20 to 30 kt. Seas 6 to 9 ft. 
.SAT...SE winds 10 to 15 kt. Seas 6 to 8 ft. 

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

...TROPICAL STORM WARNING...

.TODAY...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to
30 kt. Seas 4 to 6 ft. 
.WED...TROPICAL STORM CONDITIONS EXPECTED. NE winds 20 to
30 kt, becoming N 45 to 55 kt in the afternoon. Seas 6 to 9 ft. 
.WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. N winds 50 to
60 kt, shifting to S 45 to 55 kt after midnight. Seas 7 to
10 ft. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. S winds 40 to 50 kt.
Seas 7 to 10 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI NIGHT...E winds 15 to 25 kt. Seas 6 to 8 ft. 
.SAT...E winds 10 to 15 kt. Seas 5 to 7 ft. 

Synopsis for the the SW N ATLC including the Bahamas

.SYNOPSIS...Hurricane Florence near 26.4N 64.1W 944 mb at 5 AM 
EDT moving WNW at 13 kt. Florence will remain an extremely 
dangerous major hurricane through Thursday. Maximum sustained 
winds 120 kt gusts 145 kt. Florence will move to 27.2N 66.4W this
afternoon, 28.7N 69.4W tonight, 30.5N 72.2W Wed afternoon, pass 
N of the area near 32.2N 74.5W Wed night, then approach the 
Carolina coast near 34.3N 77.1W Thu night. 

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

.TODAY...Variable winds less than 10 kt. Seas 3 to 4 ft. 
.TONIGHT...Variable winds less than 10 kt. Seas 4 to 6 ft. 
.WED...N winds 10 to 15 kt. Seas 7 to 10 ft. 
.WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W winds 20 to
30 kt. Seas 12 to 17 ft. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 20 to
30 kt. Seas 11 to 16 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. 
.SAT...S winds 10 to 15 kt. Seas 5 to 7 ft. 

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

...HURRICANE WARNING...

.TODAY...HURRICANE CONDITIONS. W of 70W, NE winds 10 to
20 kt,Seas 4 to 6 ft, building to 6 to 9 ft in the afternoon.
Elsewhere, N winds 80 to 90 kt, becoming NE 85 to 105 kt in the
afternoon,Seas 10 to 15 ft, building to 15 to 25 ft in the
afternoon. 
.TONIGHT...HURRICANE CONDITIONS EXPECTED. W of 70W, N winds
20 to 30 kt, increasing to 60 to 70 kt after midnight,Seas 8 to
11 ft, building to 12 to 17 ft after midnight. Elsewhere, SE
winds 90 to 110 kt,Seas 21 to 31 ft. 
.WED...HURRICANE CONDITIONS EXPECTED. W of 70W, NW winds 90 to
110 kt,Seas 15 to 25 ft, building to 19 to 29 ft in the
afternoon. Elsewhere, S winds 85 to 105 kt, diminishing to 30 to
40 kt in the afternoon,Seas 20 to 30 ft, subsiding to 14 to
19 ft in the afternoon. 
.WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, SW
winds 90 to 110 kt, diminishing to 40 to 50 kt after
midnight,Seas 16 to 26 ft, subsiding to 14 to 19 ft after
midnight. Elsewhere, S winds 20 to 30 kt,Seas 9 to 14 ft,
subsiding to 8 to 11 ft after midnight. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. S winds 20 to 30 kt
W of 70W, and SE 10 to 15 kt elsewhere. W of 70W, seas 12 to
17 ft, subsiding to 9 to 14 ft in the afternoon. Elsewhere, seas
8 to 11 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft. 
.SAT...NE winds 10 to 15 kt. Seas 6 to 9 ft. 

Bahamas N of 22N

.TODAY...NE winds less than 10 kt. Seas 2 ft or less. 
.TONIGHT...NE winds less than 10 kt. Seas 4 to 6 ft.
.WED...E winds less than 10 kt. Seas 4 to 6 ft. 
.WED NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 5 ft. 
.THU...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.SAT...NE winds 10 kt. Seas 3 to 5 ft. 

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

...HURRICANE WARNING...

.TODAY...HURRICANE CONDITIONS. N winds 10 to 20 kt W of 70W,
and W 80 to 100 kt elsewhere. W of 70W, seas 4 to 6 ft, building
to 6 to 9 ft in the afternoon. Elsewhere, seas 10 to 15 ft,
building to 13 to 18 ft in the afternoon. 
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, NW
winds 20 to 30 kt,Seas 8 to 11 ft, building to 9 to 14 ft after
midnight. Elsewhere, SW winds 40 to 50 kt, becoming S 20 to
30 kt after midnight,Seas 12 to 17 ft. 
.WED...SE winds 15 to 25 kt. Seas 8 to 13 ft. 
.WED NIGHT...SE winds 10 to 15 kt. Seas 6 to 9 ft. 
.THU...E winds 10 to 15 kt. Seas 6 to 8 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft. 
.FRI...E winds 10 to 15 kt. Seas 6 to 9 ft. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 7 to 9 ft. 
.SAT...NE winds less than 10 kt. Seas 7 to 9 ft. 

ATLC waters S of 22N W of 65W

.TODAY...E winds less than 10 kt. Seas 5 to 7 ft. 
.TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. 
.WED...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.THU...E winds 10 to 15 kt. Seas 5 to 7 ft. 
.THU NIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft. 
.FRI...NE winds 10 to 15 kt. Seas 6 to 9 ft. 
.FRI NIGHT...NE winds 15 to 25 kt. Seas 6 to 8 ft. 
.SAT...E winds 15 to 25 kt. Seas 6 to 8 ft. 

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

.TODAY...E winds 10 to 15 kt. Seas 5 to 7 ft. 
.TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. 
.WED...E winds 10 to 20 kt. Seas 7 to 10 ft. 
.WED NIGHT...E winds 15 to 20 kt. Seas 8 to 11 ft.
.THU...E winds 10 to 20 kt. Seas 8 to 12 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 8 to 12 ft. 
.FRI...E winds 10 to 20 kt. Seas 8 to 11 ft. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 7 to 9 ft. 
.SAT...S winds less than 10 kt. Seas 6 to 8 ft.