000
FZNT31 KNHC 202045
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
445 PM EDT Fri Oct 20 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...Hurricane Tammy is near 14.3N 59.2W at 5 PM EDT, and
is moving west-northwest at 6 kt. Maximum sustained winds are
65 kt with gusts to 80 kt, and the minimum central pressure is
991 mb. Tammy will move through the northern Leeward islands
through Sun, reaching 15.3N 60.1W Sat morning, 16.7N 61.2W Sat
afternoon, 18.1N 62.1W Sun morning, and 19.5N 63.0W Sun
afternoon. Tammy will continue to move north of the area Sun
night through the early part of the week. Elsewhere, a trough
will persist over the northwest Caribbean into Sat. Looking
ahead, a weak cold front will move into the northwest Caribbean
by late Mon, then stall and weaken from eastern Cuba to northern
Belize Tue. 

NW Caribbean W of 85W

.TONIGHT...N winds 10 to 20 kt. Seas 3 to 4 ft. 
.SAT...N winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.SUN...NE winds 10 to 15 kt. Seas 3 ft. 
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 ft. 
.MON...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...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. 

Caribbean N of 15N between 72W and 85W

.TONIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. 
.SAT...NE winds 10 to 15 kt. Seas 2 ft or less. 
.SAT NIGHT...S of 18N, NE winds 10 to 15 kt, diminishing to less
than 10 kt after midnight. Elsewhere, NE winds 10 to 15 kt. Seas
2 ft or less. 
.SUN...NE winds 10 to 15 kt. Seas 2 ft or less. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 2 ft or less. 
.MON...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.MON NIGHT...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...NE winds 10 to 20 kt. Seas 3 to 4 ft S of 18N, and
4 to 6 ft elsewhere. 
.WED...E winds 10 to 20 kt. Seas 3 to 5 ft. 

Caribbean from 11N to 15N W of 72W

.TONIGHT...Within 90 nm of coast of Colombia, N winds 10 to
15 kt, shifting to E after midnight. Elsewhere, NE 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 E 10 to 15 kt elsewhere. Seas 3 ft. 
.SAT NIGHT...NE winds 10 to 15 kt, diminishing to less than
10 kt after midnight. Seas 3 ft. 
.SUN...Variable winds less than 10 kt within 90 nm of coast of
Colombia, and E 10 to 15 kt elsewhere. Seas 3 ft. 
.SUN NIGHT...Variable winds less than 10 kt within 90 nm of
coast of Colombia, and E 10 to 15 kt elsewhere. Seas 3 ft. 
.MON...Variable winds less than 10 kt within 90 nm of coast of
Colombia, and E 10 to 15 kt elsewhere. Seas 3 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 ft. 
.TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 2 ft or less. 
.TUE NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. 
.WED...Within 90 nm of coast of Colombia, E winds 10 to 15 kt,
diminishing to less than 10 kt in the afternoon. Elsewhere, NE
winds 10 to 15 kt. Seas 2 ft or less. 

SW Caribbean S of 11N

.TONIGHT...W winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT...SW winds 10 to 20 kt. Seas 3 ft. 
.SAT NIGHT...SW winds 10 to 15 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less. 
.SUN...S winds 10 to 15 kt. Seas 2 ft or less. 
.SUN NIGHT...S winds 10 to 15 kt. Seas 2 ft or less. 
.MON...S winds 10 to 15 kt. Seas 2 ft or less. 
.MON NIGHT...SE winds less than 10 kt. Seas 2 ft or less. 
.TUE...NE winds less than 10 kt. Seas 2 ft or less. 
.TUE NIGHT...N winds less than 10 kt. Seas 2 ft or less. 
.WED...NW winds less than 10 kt. Seas 2 ft or less. 

Caribbean between 64W and 72W

.TONIGHT...E winds 10 to 15 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 5 ft elsewhere. 
.SAT...Gulf of Venezuela, NE winds less than 10 kt, shifting to
SW in the afternoon. Elsewhere, E winds 10 to 15 kt. Seas 2 ft
or less Gulf of Venezuela, and 3 to 5 ft elsewhere. 
.SAT NIGHT...NE winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 4 ft elsewhere. 
.SUN...Gulf of Venezuela, N winds less than 10 kt in the
morning, becoming variable winds less than 10 kt. Elsewhere, E
winds 10 to 15 kt, shifting to SE in the afternoon. Seas 2 ft or
less Gulf of Venezuela, and 3 to 4 ft elsewhere. 
.SUN NIGHT...E winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 ft elsewhere. 
.MON...E winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 ft elsewhere. 
.MON NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 ft. 
.TUE...Gulf of Venezuela, Variable winds less than 10 kt,
becoming NE 10 kt in the afternoon. Elsewhere, E winds 10 to
15 kt. Seas 3 ft. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 3 ft. 
.WED...Gulf of Venezuela, E winds 10 to 15 kt, shifting to NE in
the afternoon. Elsewhere, NE winds 10 to 20 kt. Seas 2 ft or
less Gulf of Venezuela, and 3 to 4 ft elsewhere. 

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

...HURRICANE WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS. E winds 40 to 50 kt,
increasing to 55 to 65 kt after midnight. Seas 10 to 15 ft. 
.SAT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 55 to
65 kt. Seas 10 to 15 ft. 
.SAT NIGHT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 55 to
70 kt. Seas 9 to 14 ft. 
.SUN...TROPICAL STORM CONDITIONS EXPECTED. SE winds 65 to
75 kt, diminishing to 45 to 55 kt in the afternoon. Seas 5 to
7 ft. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 15 to
25 kt, diminishing to 10 to 15 kt after midnight. Seas 4 to
6 ft. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 10 to
15 kt. Seas 4 to 6 ft. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...SE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 4 to 6 ft. 
.TUE NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 5 ft. 
.WED...E winds 10 to 15 kt. Seas 3 to 5 ft. 

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

...TROPICAL STORM WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS. SE winds 50 to 60 kt.
Seas 6 to 9 ft. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 25 to
35 kt, diminishing to 10 to 20 kt in the afternoon. 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. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE...E 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...E winds 10 to 15 kt. Seas 3 to 5 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Hurricane Tammy is near 14.3N 59.2W at 5 PM EDT, and
is moving west-northwest at 6 kt. Maximum sustained winds are
65 kt with gusts to 80 kt, and the minimum central pressure is
991 mb. Tammy will move across the northern Leeward Islands
through Sun, then continue on to 19.5N 63.0W Sun afternoon,
20.8N 63.4W Mon morning, and 22.0N 63.4W Mon afternoon. Tammy 
will change little in intensity as it moves to 24.5N 61.7W Tue 
afternoon. Farther west, a weak cold front will move off the 
northeast Florida coast overnight, then weaken as it moves 
eastward over the waters north of 27N, before stalling and 
dissipating east of Bermuda early in the week. A second front 
will follow, moving off the northeast Florida coast late Sun, 
reach from Bermuda to West Palm Beach, Florida by early Mon, then
stall along 21N Tue.

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

.TONIGHT...W winds 20 to 30 kt. Seas 4 to 6 ft. 
.SAT...NW winds 20 to 30 kt. Seas 6 to 9 ft. 
.SAT NIGHT...NW winds 10 to 20 kt. Seas 5 to 7 ft. 
.SUN...W winds 10 to 15 kt. Seas 3 to 5 ft. 
.SUN NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...NE winds 15 to 20 kt. Seas 5 to 7 ft. 
.TUE NIGHT...NE winds 15 to 20 kt. Seas 6 to 7 ft. 
.WED...E winds 15 to 20 kt. Seas 6 to 7 ft. 

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

.TONIGHT...W of 70W, SW winds 10 to 20 kt, increasing to 20 to
30 kt after midnight. Elsewhere, S winds 20 to 30 kt. Seas 5 to
7 ft W of 70W, and 7 to 10 ft elsewhere.
.SAT...W winds 20 to 30 kt. Seas 7 to 10 ft. 
.SAT NIGHT...W winds 15 to 25 kt. Seas 8 to 11 ft. 
.SUN...W winds 10 to 15 kt. Seas 6 to 9 ft. 
.SUN NIGHT...NW winds 10 to 15 kt. Seas 6 to 8 ft. 
.MON...N winds 10 to 20 kt. Seas 6 to 8 ft. 
.MON NIGHT...NE winds 15 to 20 kt. Seas 6 to 9 ft. 
.TUE...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.TUE NIGHT...NE winds 15 to 20 kt W of 70W, and NE 20 to 25 kt
elsewhere. Seas 7 to 10 ft. 
.WED...NE winds 15 to 20 kt W of 70W, and NE 20 to 25 kt
elsewhere. Seas 8 to 11 ft. 

Bahamas N of 22N

.TONIGHT...N winds less than 10 kt, shifting to W after
midnight. Seas 2 ft or less. 
.SAT...NW winds 10 to 20 kt. Seas 2 ft or less, building to 3 ft
in the afternoon. 
.SAT NIGHT...N winds 10 to 15 kt, shifting to NE after midnight.
Seas 3 to 4 ft. 
.SUN...NE winds less than 10 kt. Seas 3 to 4 ft. 
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less. 
.MON...NE winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft
in the afternoon. 
.MON NIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft. 
.TUE...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...NE winds 10 to 20 kt. Seas 4 to 6 ft. 

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

.TONIGHT...W of 70W, SW winds less than 10 kt, shifting to S
after midnight. Elsewhere, S winds 10 to 20 kt. Seas 4 to 6 ft W
of 70W, and 6 to 8 ft elsewhere. 
.SAT...SW winds 10 to 20 kt. Seas 4 to 6 ft W of 70W, and 7 to
8 ft elsewhere. 
.SAT NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to
15 kt. Seas 6 to 8 ft. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to
20 kt. Seas 5 to 7 ft W of 70W, and 8 to 11 ft elsewhere. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.WED...NE winds 15 to 20 kt. Seas 7 to 9 ft. 

ATLC waters S of 22N W of 65W

.TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.SAT...S winds 10 to 15 kt. Seas 4 to 6 ft. 
.SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to
15 kt. Seas 5 to 7 ft. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 10 to
20 kt. Seas 5 to 7 ft. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. N winds 10 to 15 kt.
Seas 4 to 6 ft. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.WED...NE winds 10 to 20 kt. Seas 5 to 7 ft. 

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

...HURRICANE WARNING...

.TONIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 20 to 30 kt.
Seas 8 to 12 ft. 
.SAT NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to
40 kt. Seas 10 to 15 ft. 
.SUN...HURRICANE CONDITIONS EXPECTED. SE winds 60 to 75 kt. Seas
12 to 17 ft. 
.SUN NIGHT...HURRICANE CONDITIONS POSSIBLE. SE winds 65 to
75 kt. Seas 11 to 16 ft. 
.MON...HURRICANE CONDITIONS POSSIBLE. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE NIGHT...W winds 10 to 15 kt, shifting to NE after midnight.
Seas 5 to 7 ft. 
.WED...E winds 10 to 15 kt. Seas 5 to 7 ft.