000
FZNT31 KNHC 050237
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1037 PM EDT Mon Sep 4 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 Irma at 16.7N 55.6W 943 mb at 11 PM moving
W at 11 kt with maximum sustained winds 120 kt gusts to 145 kt.
Irma will reach near 16.9N 57.4W Tue morning, near 17.5N 60.0W
Tue evening, near 18.3N 62.7W Wed morning, near 19.3N 65.5W Wed
evening, near 21.2N 71.0W Thu evening, near 22.5N 76.0W Fri
evening, and near 24.0N 80.0W Sat evening. Large E swells will
reach the NE passages this evening. Tropical storm force and
greater conditions will reach the vicinity of the northern
Leewards on Tue afternoon and vicinity of the Virgin Islands
early Wed. 

NW Caribbean W of 85W

.OVERNIGHT...E winds 10 kt. Seas 3 ft. 
.TUE...E winds less than 10 kt. Seas 2 ft or less. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. 
.WED...E winds less than 10 kt. Seas 2 ft or less. 
.WED NIGHT...E winds 10 to 15 kt. Seas 2 ft or less.
.THU...E winds 10 to 15 kt. Seas 2 ft or less. 
.THU NIGHT...NE winds less than 10 kt. Seas 2 ft or less. 
.FRI...N winds less than 10 kt. Seas 2 ft or less. 
.FRI NIGHT...N winds 10 to 15 kt. Seas 2 ft or less. 
.SAT...NW winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft
in the afternoon. 

Caribbean N of 15N between 72W and 85W

.OVERNIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt
elsewhere. Seas 2 ft or less. 
.TUE...S of 18N, E winds less than 10 kt, increasing to 10 to
15 kt in the afternoon. Elsewhere, E winds 10 to 15 kt,
diminishing to less than 10 kt in the afternoon. Seas 2 ft or
less. 
.TUE NIGHT...S of 18N, E winds less than 10 kt, increasing to
10 to 15 kt after midnight. Elsewhere, E winds less than 10 kt.
Seas 2 ft or less. 
.WED...S of 18N, E winds 10 to 15 kt, diminishing to less than
10 kt in the afternoon. Elsewhere, SE winds less than 10 kt.
Seas 2 ft or less. 
.WED NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. 
.THU NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.FRI...HURRICANE CONDITIONS POSSIBLE. 
.FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.SAT...HURRICANE CONDITIONS POSSIBLE. 

Caribbean from 11N to 15N W of 72W

.OVERNIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.WED...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.WED NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. 
.THU...NE winds less than 10 kt. Seas 3 to 4 ft. 
.THU NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. 
.FRI...Within 90 nm of coast of Colombia, Variable winds less
than 10 kt, becoming SW less than 10 kt in the afternoon.
Elsewhere, NW winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI NIGHT...Within 90 nm of coast of Colombia, W winds 10 kt in
the evening, becoming variable winds less than 10 kt. Elsewhere,
W winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT...SW winds less than 10 kt within 90 nm of coast of
Colombia, and SW 10 to 15 kt elsewhere. Seas 3 ft. 

SW Caribbean S of 11N

.OVERNIGHT...N winds less than 10 kt. Seas 3 ft. 
.TUE...NE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 ft. 
.TUE NIGHT...NE winds less than 10 kt. Seas 3 ft. 
.WED...E winds less than 10 kt, shifting to W in the afternoon.
Seas 3 ft. 
.WED NIGHT...N winds less than 10 kt. Seas 3 ft. 
.THU...N winds less than 10 kt, shifting to SW in the afternoon.
Seas 3 ft. 
.THU NIGHT...NW winds less than 10 kt. Seas 3 ft. 
.FRI...W winds less than 10 kt. Seas 3 to 4 ft. 
.FRI NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. 
.SAT...SW winds 10 to 15 kt. Seas 3 ft. 

Caribbean between 64W and 72W

.OVERNIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to
20 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft
elsewhere. 
.WED...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 kt Gulf
of Venezuela, and NE 20 to 30 kt elsewhere. Seas 2 ft or less
Gulf of Venezuela, and 5 to 7 ft elsewhere. 
.WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 kt
Gulf of Venezuela, and NE 20 to 30 kt elsewhere. Seas 2 ft or
less Gulf of Venezuela, and 6 to 8 ft elsewhere. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. 
.THU NIGHT...N winds less than 10 kt Gulf of Venezuela, and SE
15 to 25 kt elsewhere. Seas 3 ft Gulf of Venezuela, and 6 to
9 ft elsewhere. 
.FRI...Variable winds less than 10 kt Gulf of Venezuela, and SE
10 to 20 kt elsewhere. Gulf of Venezuela, seas 3 ft in the
morning, subsiding to 2 ft or less. Elsewhere, seas 4 to 6 ft. 
.FRI NIGHT...NE winds less than 10 kt Gulf of Venezuela, and E
10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and
3 to 5 ft elsewhere. 
.SAT...Variable winds less than 10 kt Gulf of Venezuela, and SE
10 to 20 kt elsewhere. Seas 3 to 4 ft. 

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

...HURRICANE WARNING...

.OVERNIGHT...HURRICANE CONDITIONS. NE winds 80 to 100 kt. Seas
12 to 17 ft. 
.TUE...HURRICANE CONDITIONS EXPECTED. NE winds 85 to 105 kt.
Seas 14 to 19 ft. 
.TUE NIGHT...HURRICANE CONDITIONS EXPECTED. SE winds 85 to
105 kt. Seas 17 to 22 ft. 
.WED...HURRICANE CONDITIONS EXPECTED. S winds 85 to 105 kt.
Seas 14 to 19 ft, subsiding to 10 to 15 ft in the afternoon. 
.WED NIGHT...HURRICANE CONDITIONS POSSIBLE. SE winds 45 to
55 kt, diminishing to 20 to 30 kt after midnight. Seas 8 to
13 ft, subsiding to 7 to 10 ft after midnight. 
.THU...SE winds 20 to 30 kt, becoming E 10 to 20 kt in the
afternoon. Seas 6 to 8 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.FRI...E winds 15 to 25 kt. Seas 6 to 8 ft. 
.FRI NIGHT...E winds 20 to 30 kt. Seas 6 to 9 ft. 
.SAT...SE winds 15 to 25 kt. Seas 6 to 8 ft. 

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

.OVERNIGHT...NW winds 20 to 30 kt. Seas 7 to 10 ft. 
.TUE...SW winds 20 to 30 kt. Seas 8 to 11 ft. 
.TUE NIGHT...S winds 20 to 30 kt. Seas 7 to 10 ft. 
.WED...SE winds 15 to 25 kt. Seas 6 to 9 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 4 to 6 ft. 
.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.SAT...SE winds 10 to 20 kt. Seas 4 to 6 ft. 

SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS

.SYNOPSIS...A ridge will build W and meander from Bermuda to
Port
Canaveral on Tue and Wed. Hurricane Irma at 16.7N 55.6W 943 mb
at
11 PM moving W at 11 kt with maximum sustained winds 120 kt
gusts
to 145 kt. Irma will reach near 16.9N 57.4W Tue morning, near
17.5N 60.0W Tue evening, near 18.3N 62.7W Wed morning, near
19.3N
65.5W Wed evening, near 21.2N 71.0W Thu evening, near 22.5N
76.0W
Fri evening, and near 24.0N 80.0W Sat evening.

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

.OVERNIGHT...SE winds 10 kt. Seas 3 to 4 ft. 
.TUE...SE winds 10 kt. Seas 3 to 4 ft. 
.TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED...S winds 10 kt. Seas 4 to 5 ft. 
.WED NIGHT...S winds less than 10 kt. Seas 4 to 6 ft. 
.THU...SW winds less than 10 kt. Seas 6 to 8 ft. 
.THU NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 8 to 11 ft. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.SAT...HURRICANE CONDITIONS POSSIBLE. 

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

.OVERNIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. 
.WED...SE winds 10 to 20 kt. Seas 6 to 8 ft. 
.WED NIGHT...SE winds 10 to 20 kt. Seas 6 to 9 ft W of 70W, and
8 to 11 ft elsewhere. 
.THU...SE winds 10 to 20 kt. Seas 8 to 13 ft. 
.THU NIGHT...SE winds 10 to 20 kt. Seas 9 to 14 ft. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 

Bahamas N of 22N

.OVERNIGHT...E winds 10 to 15 kt. Seas 2 ft or less. 
.TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 2 ft or less, building to 3 ft in the
afternoon. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft. 
.WED...SE winds 10 to 15 kt. Seas 3 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU...HURRICANE CONDITIONS POSSIBLE. 
.THU NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.FRI...HURRICANE CONDITIONS POSSIBLE. 
.FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.SAT...HURRICANE CONDITIONS POSSIBLE. 

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

.OVERNIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...E winds 10 to 15 kt. Seas 5 to 7 ft. 
.TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft W of 70W, and
7 to 10 ft elsewhere. 
.WED...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 10 to 15 kt
W of 70W, and E 15 to 25 kt elsewhere. Seas 6 to 9 ft W of 70W,
and 9 to 14 ft elsewhere. 
.WED NIGHT...HURRICANE CONDITIONS POSSIBLE. E winds 10 to 20 kt
W of 70W, and E 20 to 30 kt elsewhere. Seas 8 to 13 ft W of 70W,
and 13 to 18 ft elsewhere. 
.THU...HURRICANE CONDITIONS POSSIBLE. 
.THU NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.FRI...HURRICANE CONDITIONS POSSIBLE. 
.FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.SAT...HURRICANE CONDITIONS POSSIBLE. 

ATLC waters S of 22N W of 65W

...HURRICANE WARNING...

.OVERNIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. 
.WED...TROPICAL STORM CONDITIONS EXPECTED. E winds 15 to 25 kt,
becoming NE 35 to 45 kt in the afternoon. Seas 8 to 11 ft,
building to 10 to 15 ft in the afternoon. 
.WED NIGHT...HURRICANE CONDITIONS POSSIBLE. NE winds 85 to
105 kt. Seas 14 to 19 ft, building to 17 to 22 ft after
midnight. 
.THU...HURRICANE CONDITIONS POSSIBLE. 
.THU NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.FRI...HURRICANE CONDITIONS POSSIBLE. 
.FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.SAT...HURRICANE CONDITIONS POSSIBLE. 

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

...HURRICANE WARNING...

.OVERNIGHT...NE winds 20 to 30 kt. Seas 9 to 14 ft. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. E winds 25 to 35 kt.
Seas 11 to 16 ft. 
.TUE NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to
40 kt, increasing to 40 to 50 kt after midnight. Seas 14 to
19 ft. 
.WED...TROPICAL STORM CONDITIONS EXPECTED. E winds 50 to 60 kt,
increasing to 85 to 105 kt in the afternoon. Seas 16 to 21 ft. 
.WED NIGHT...HURRICANE CONDITIONS POSSIBLE. E winds 70 to
80 kt, becoming SE 35 to 45 kt after midnight. Seas 14 to 19 ft,
subsiding to 11 to 16 ft after midnight. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. 
.THU NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. 
.FRI...E winds 15 to 25 kt. Seas 7 to 9 ft. 
.FRI NIGHT...E winds 20 to 30 kt. Seas 8 to 13 ft. 
.SAT...E winds 20 to 30 kt. Seas 8 to 13 ft.