779 
FZNT31 KNHC 232048
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
448 PM EDT Mon Oct 23 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...Tropical Depression Twenty-One is near 11.6N 83.5W
at 5 PM EDT, and is moving west at 4 kt. Maximum sustained winds
are 25 kt with gusts to 35 kt, and the minimum central pressure
is 1007 mb. Twenty-One will move inland to 12.0N 84.2W Tue
morning, and dissipate Tue afternoon. Otherwise, fresh to
occasionally strong winds will prevail in the lee of Cuba and in
the Windward Passage through the week. Winds will briefly
increase to fresh to strong south of Hispaniola Wed night and
Thu. Elsewhere, gentle winds will prevail. 

NW Caribbean W of 85W

.TONIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.TUE...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE NIGHT...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 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 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...E winds 10 to 20 kt. Seas 5 to 7 ft. 

Caribbean N of 15N between 72W and 85W

.TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE NIGHT...NE winds 10 to 15 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 3 to 5 ft. 
.WED...E 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 E 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

.TONIGHT...NE winds 10 to 15 kt within 90 nm of coast of
Colombia, and E 15 to 25 kt elsewhere. Seas 3 to 4 ft. 
.TUE...E winds 10 to 20 kt. Seas 3 ft. 
.TUE NIGHT...NE winds less than 10 kt. Seas 2 ft or less. 
.WED...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. 
.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...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. 
.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,
building to 3 ft after midnight. 
.FRI...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI NIGHT...Within 90 nm of coast of Colombia, W winds less
than 10 kt, shifting to S after midnight. Elsewhere, NE winds
10 to 15 kt. Seas 3 to 4 ft. 
.SAT...E winds 10 to 15 kt. Seas 3 to 4 ft. 

SW Caribbean S of 11N

.TONIGHT...E winds less than 10 kt. Seas 2 ft or less. 
.TUE...SE winds less than 10 kt. Seas 2 ft or less. 
.TUE NIGHT...NW winds less than 10 kt. Seas 2 ft or less. 
.WED...W 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. Seas 2 ft or less. 
.FRI...W winds 10 to 15 kt. Seas 2 ft or less. 
.FRI NIGHT...W winds 10 to 15 kt. Seas 3 ft. 
.SAT...W winds 10 to 15 kt. Seas 3 ft. 

Caribbean between 64W and 72W

.TONIGHT...Gulf of Venezuela, NE winds 10 to 15 kt. Elsewhere, E
winds less than 10 kt, increasing to 10 to 15 kt after midnight.
Seas 3 ft. 
.TUE...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela,
and 3 ft elsewhere. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 3 ft. 
.WED...Gulf of Venezuela, E winds 10 kt in the morning, becoming
variable winds less than 10 kt. Elsewhere, NE winds 10 to 20 kt.
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 5 ft elsewhere. 
.THU...Variable winds less than 10 kt Gulf of Venezuela, and E
15 to 25 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and
3 to 5 ft elsewhere. 
.THU NIGHT...NE 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 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...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 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

.TONIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE NIGHT...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...S 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 15 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

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

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Hurricane Tammy is near 22.3N 63.6W at 5 PM EDT, and
is moving north-northeast at 6 kt. Maximum sustained winds are 
65 kt with gusts to 80 kt, and the minimum central pressure is 
990 mb. Tammy will move to 23.0N 62.9W Tue morning, 24.0N 61.7W 
Tue afternoon, 25.3N 60.3W Wed morning, 26.8N 59.0W Wed 
afternoon, 28.9N 58.6W Thu morning, and weaken as an 
extratropical cyclone near 30.3N 59.3W Thu afternoon. Tammy will
change little in intensity as it moves N of the area near 31.7N 
62.1W Fri afternoon. A cold front from near 31N65W to the 
northern Bahamas. High pressure will move off the east coast of 
the United States later tonight, and build north of the forecast 
area through midweek. The pressure gradient between the front, 
Tammy, and the area of building high pressure will tighten. The 
tightening pressure gradient will help to develop of a broad area
of strong NE winds and rough seas across much of the area west 
of the boundary starting tonight and continuing through the week.

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

.TONIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.TUE...NE winds 15 to 25 kt. Seas 6 to 8 ft. 
.TUE NIGHT...E winds 20 to 30 kt. Seas 6 to 9 ft. 
.WED...E winds 20 to 30 kt. Seas 7 to 10 ft. 
.WED NIGHT...E winds 20 to 30 kt. Seas 8 to 11 ft.
.THU...E winds 20 to 30 kt. Seas 8 to 12 ft. 
.THU NIGHT...E winds 20 to 30 kt. Seas 8 to 11 ft. 
.FRI...E winds 15 to 25 kt. Seas 8 to 11 ft. 
.FRI NIGHT...E 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

.TONIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.TUE...NE winds 15 to 25 kt. Seas 7 to 9 ft. 
.TUE NIGHT...NE winds 20 to 30 kt. Seas 8 to 11 ft. 
.WED...NE winds 20 to 30 kt. Seas 10 to 15 ft.
.WED NIGHT...NE winds 20 to 30 kt. Seas 11 to 16 ft W of 70W,
and 13 to 16 ft elsewhere. 
.THU...NE winds 20 to 30 kt. Seas 11 to 16 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 17 ft elsewhere. 
.FRI...NE winds 20 to 30 kt. Seas 10 to 15 ft W of 70W, and
14 to 17 ft elsewhere. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT...NE winds 20 to 30 kt. Seas 10 to 15 ft. 

Bahamas N of 22N

.TONIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft. 
.TUE...NE winds 20 to 30 kt. Seas 3 to 5 ft. 
.TUE NIGHT...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...NE winds 20 to 30 kt. Seas 6 to 8 ft. 
.THU NIGHT...NE winds 20 to 30 kt. Seas 6 to 8 ft. 
.FRI...NE winds 15 to 25 kt. Seas 6 to 8 ft. 
.FRI NIGHT...NE winds 20 to 30 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

.TONIGHT...NE winds 10 to 20 kt W of 70W, and NE 15 to 25 kt
elsewhere. Seas 6 to 8 ft W of 70W, and 8 to 12 ft elsewhere. 
.TUE...NE winds 20 to 30 kt W of 70W, and NE 15 to 25 kt
elsewhere. Seas 7 to 10 ft. 
.TUE NIGHT...NE winds 20 to 30 kt. Seas 8 to 12 ft. 
.WED...NE winds 20 to 30 kt. Seas 10 to 14 ft.
.WED NIGHT...NE winds 20 to 30 kt. Seas 11 to 16 ft. 
.THU...NE winds 20 to 30 kt. Seas 12 to 16 ft. 
.THU NIGHT...NE winds 20 to 30 kt. Seas 12 to 15 ft. 
.FRI...NE winds 20 to 30 kt W of 70W, and NE 15 to 25 kt
elsewhere. Seas 11 to 15 ft. 
.FRI NIGHT...NE winds 20 to 30 kt W of 70W, and NE 15 to 25 kt
elsewhere. Seas 10 to 14 ft. 
.SAT...NE winds 20 to 30 kt W of 70W, and E 15 to 25 kt
elsewhere. Seas 9 to 13 ft. 

ATLC waters S of 22N W of 65W

.TONIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.TUE...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.WED...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.WED NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.THU...NE winds 15 to 25 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

...TROPICAL STORM WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS. S winds 40 to 50 kt,
diminishing to 30 to 40 kt after midnight. Seas 7 to 10 ft. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. S winds 20 to 30 kt.
Seas 6 to 9 ft. 
.TUE NIGHT...S winds 15 to 25 kt. Seas 6 to 8 ft. 
.WED...SW winds 10 to 20 kt. Seas 6 to 8 ft. 
.WED NIGHT...S winds 10 to 20 kt. 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 15 kt. Seas 7 to 10 ft. 
.SAT...SE winds 10 to 15 kt. Seas 7 to 9 ft.