247 
FZNT31 KNHC 241452
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1052 AM EDT Tue Oct 24 2023

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

.SYNOPSIS...Fresh to occasionally strong winds will prevail in
the lee of Cuba and in the Windward Passage through the week.
Gentle winds will prevail elsewhere. 

NW Caribbean W of 85W

.THIS AFTERNOON...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.WED...E winds 10 to 20 kt. Seas 4 to 6 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 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 5 to 7 ft. 
.SAT...NE winds 10 to 20 kt. Seas 5 to 7 ft. 

Caribbean N of 15N between 72W and 85W

.THIS AFTERNOON...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TONIGHT...NE winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 3 to 5 ft. 
.WED...NE winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 3 to 5 ft. 
.WED NIGHT...NE winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 4 to 6 ft. 
.THU...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 4 to 6 ft. 
.THU NIGHT...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 4 to 6 ft. 
.FRI...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 4 to 6 ft. 
.FRI NIGHT...NE winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 4 to 6 ft. 
.SAT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 

Caribbean from 11N to 15N W of 72W

.THIS AFTERNOON...E winds 10 to 20 kt. Seas 3 ft, subsiding to
2 ft or less. 
.TONIGHT...NE winds less than 10 kt. Seas 2 ft or less. 
.WED...E winds less than 10 kt. Seas 2 ft or less. 
.WED NIGHT...E winds less than 10 kt within 90 nm of coast of
Colombia, and NE 10 to 15 kt elsewhere. Seas 2 ft or less. 
.THU...E winds 10 to 15 kt. Seas 2 ft or less. 
.THU NIGHT...S winds less than 10 kt within 90 nm of coast of
Colombia, and NE 10 to 15 kt elsewhere. Seas 2 ft or less. 
.FRI...E winds 10 to 15 kt. Seas 3 ft. 
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT...NE winds 10 to 20 kt. Seas 3 to 4 ft. 

SW Caribbean S of 11N

.THIS AFTERNOON...S winds less than 10 kt. Seas 2 ft or less. 
.TONIGHT...W winds less than 10 kt. Seas 2 ft or less. 
.WED...SW winds less than 10 kt. Seas 2 ft or less. 
.WED NIGHT...W winds less than 10 kt. Seas 2 ft or less. 
.THU...W winds less than 10 kt. Seas 2 ft or less. 
.THU NIGHT...W winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less. 
.FRI...W winds 10 to 15 kt. Seas 2 ft or less. 
.FRI NIGHT...W winds 10 to 20 kt. Seas 2 ft or less, building to
3 ft after midnight. 
.SAT...W winds 10 to 20 kt. Seas 3 ft. 

Caribbean between 64W and 72W

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 ft. 
.TONIGHT...NE winds 10 to 20 kt. Seas 3 ft. 
.WED...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
4 ft elsewhere. 
.WED NIGHT...E winds less than 10 kt Gulf of Venezuela, and NE
15 to 25 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and
3 to 4 ft elsewhere. 
.THU...Variable 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. 
.THU NIGHT...Gulf of Venezuela, N winds 10 kt in the evening,
becoming variable winds less than 10 kt. Elsewhere, NE winds
15 to 25 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 5 ft
elsewhere. 
.FRI...Variable 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. 
.FRI NIGHT...NW 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 E
10 to 20 kt elsewhere. 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

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TONIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED...S winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.THU...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.THU NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. 
.FRI...SE winds 10 to 20 kt. Seas 5 to 7 ft. 
.FRI NIGHT...SE winds 10 to 20 kt. Seas 5 to 7 ft. 
.SAT...SE winds 10 to 20 kt. Seas 5 to 7 ft. 

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

.THIS AFTERNOON...SE winds 10 to 15 kt, diminishing to less than
10 kt in the afternoon. Seas 3 to 5 ft. 
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.WED NIGHT...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 5 ft. 
.FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Hurricane Tammy is near 24.2N 62.3W at 11 AM EDT, 
and is moving northeast at 7 kt. Maximum sustained winds are 65 
kt with gusts to 80 kt, and the minimum central pressure is 987 
mb. Tammy will move to 25.0N 61.2W this evening, 26.7N 59.9W Wed 
morning, 28.6N 59.1W Wed evening, 30.1N 59.5W Thu morning, weaken
as an extratropical cyclone near 31.2N 60.6W Thu evening, and 
31.8N 61.6W Fri morning. Tammy will change little in intensity as
it moves to near 32.5N 63.5W early Sat. A cold front extending 
from 31N57W to the central Bahamas will stall tonight then 
dissipate by Wed. The pressure gradient between this front, 
Tammy, and high pressure building N of the area will lead to the 
development of a broad area of NE winds and rough seas across 
much of the area west of the frontal boundary Tue through the 
week. 

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

.THIS AFTERNOON...NE winds 15 to 25 kt. Seas 6 to 8 ft. 
.TONIGHT...E winds 20 to 30 kt. Seas 7 to 10 ft. 
.WED...E winds 20 to 30 kt. Seas 8 to 11 ft. 
.WED NIGHT...E winds 20 to 30 kt. Seas 8 to 12 ft.
.THU...E winds 20 to 30 kt. Seas 9 to 12 ft. 
.THU NIGHT...E winds 20 to 30 kt. Seas 8 to 12 ft. 
.FRI...NE winds 15 to 25 kt. Seas 8 to 11 ft. 
.FRI NIGHT...NE winds 15 to 25 kt. Seas 8 to 11 ft. 
.SAT...NE winds 15 to 25 kt. Seas 8 to 11 ft. 

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

.THIS AFTERNOON...NE winds 20 to 30 kt. Seas 7 to 9 ft. 
.TONIGHT...NE winds 20 to 30 kt. Seas 8 to 11 ft W of 70W, and
9 to 13 ft elsewhere. 
.WED...NE winds 20 to 30 kt. Seas 9 to 14 ft W of 70W, and 12 to
15 ft elsewhere. 
.WED NIGHT...NE winds 20 to 30 kt. Seas 10 to 14 ft W of 70W,
and 13 to 16 ft elsewhere. 
.THU...NE winds 20 to 30 kt. Seas 10 to 14 ft W of 70W, and
13 to 17 ft elsewhere. 
.THU NIGHT...NE winds 20 to 30 kt. Seas 10 to 15 ft W of 70W,
and 13 to 18 ft elsewhere. 
.FRI...NE winds 20 to 30 kt. Seas 10 to 15 ft W of 70W, and
14 to 18 ft elsewhere. 
.FRI NIGHT...NE winds 20 to 30 kt. Seas 10 to 14 ft W of 70W,
and 12 to 17 ft elsewhere. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 

Bahamas N of 22N

.THIS AFTERNOON...NE winds 15 to 25 kt. Seas 3 to 5 ft. 
.TONIGHT...NE winds 20 to 30 kt. Seas 5 to 7 ft. 
.WED...NE winds 20 to 30 kt. Seas 5 to 7 ft. 
.WED NIGHT...NE winds 20 to 30 kt. Seas 6 to 8 ft. 
.THU...E winds 20 to 30 kt. Seas 6 to 9 ft. 
.THU NIGHT...NE winds 20 to 30 kt. Seas 6 to 8 ft. 
.FRI...NE winds 20 to 30 kt. Seas 5 to 7 ft. 
.FRI NIGHT...NE winds 15 to 25 kt. Seas 6 to 8 ft. 
.SAT...NE winds 15 to 25 kt. Seas 5 to 7 ft. 

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

.THIS AFTERNOON...NE winds 15 to 25 kt. Seas 8 to 11 ft. 
.TONIGHT...NE winds 20 to 30 kt. Seas 8 to 12 ft. 
.WED...NE winds 20 to 30 kt. Seas 10 to 13 ft.
.WED NIGHT...NE winds 20 to 30 kt. Seas 11 to 15 ft. 
.THU...NE winds 20 to 30 kt W of 70W, and NE 15 to 25 kt
elsewhere. Seas 11 to 14 ft. 
.THU NIGHT...NE winds 20 to 30 kt W of 70W, and NE 15 to 25 kt
elsewhere. Seas 11 to 14 ft. 
.FRI...NE winds 20 to 30 kt W of 70W, and NE 15 to 25 kt
elsewhere. Seas 11 to 14 ft. 
.FRI NIGHT...NE winds 15 to 25 kt W of 70W, and NE 10 to 20 kt
elsewhere. Seas 10 to 14 ft. 
.SAT...NE winds 15 to 25 kt W of 70W, and E 10 to 20 kt
elsewhere. Seas 8 to 13 ft. 

ATLC waters S of 22N W of 65W

.THIS AFTERNOON...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.TONIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.WED...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.WED NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.THU...NE winds 10 to 20 kt. Seas 7 to 10 ft. 
.THU NIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. 
.FRI...NE winds 10 to 20 kt. Seas 7 to 10 ft. 
.FRI NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.SAT...E winds 10 to 20 kt. Seas 6 to 9 ft. 

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

.THIS AFTERNOON...S winds 20 to 30 kt. Seas 6 to 9 ft. 
.TONIGHT...SW winds 15 to 25 kt. Seas 6 to 8 ft. 
.WED...SW winds 10 to 20 kt. Seas 6 to 8 ft. 
.WED NIGHT...W winds 10 to 20 kt, shifting to SE after midnight.
Seas 6 to 9 ft. 
.THU...SE winds 10 to 15 kt. Seas 7 to 10 ft. 
.THU NIGHT...SE 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 20 kt. Seas 7 to 10 ft. 
.SAT...SE winds 10 to 20 kt. Seas 7 to 9 ft.