000
FZNT31 KNHC 192100
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
500 PM EDT Thu Oct 19 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 Storm Tammy is near 13.7N 56.6W at 5 PM
EDT, and is moving west-northwest at 11 kt. Maximum sustained
winds are 50 kt with gusts to 60 kt, and the minimum central
pressure is 1001 mb. Tammy will move to 14.2N 58.2W Fri morning,
15.0N 59.9W Fri afternoon, and 16.4N 61.4W Sat morning. Tammy
will strengthen to a hurricane near 17.9N 62.4W Sat afternoon,
move to 19.5N 63.1W Sun morning, then continue north of the area
through early next week. Elsewhere, a trough will persist over
the northwest Caribbean through Sat. Looking ahead, a weak front
will move into the northwest Caribbean by Mon then stall through
Tue. 

NW Caribbean W of 85W

.TONIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI...N winds 10 to 20 kt. Seas 3 to 4 ft. 
.FRI NIGHT...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...E winds 10 to 15 kt. Seas 3 ft. 
.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 4 to 6 ft. 

Caribbean N of 15N between 72W and 85W

.TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and
2 ft or less elsewhere. 
.FRI...NE winds 10 to 15 kt. Seas 3 ft. 
.FRI NIGHT...S of 18N, NE winds 10 to 15 kt, diminishing to less
than 10 kt after midnight. Elsewhere, N winds 10 to 20 kt. Seas
2 ft or less. 
.SAT...NE winds less than 10 kt S of 18N, and NE 10 to 15 kt
elsewhere. Seas 2 ft or less. 
.SAT NIGHT...NE winds 10 to 20 kt. Seas 2 ft or less. 
.SUN...E 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 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.TUE...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 3 to 5 ft. 

Caribbean from 11N to 15N W of 72W

.TONIGHT...NE winds 15 to 25 kt. Seas 4 to 6 ft. 
.FRI...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT...Within 90 nm of coast of Colombia, SW winds less than
10 kt, increasing to 10 to 15 kt in the afternoon. Elsewhere, E
winds 10 to 15 kt. Seas 3 ft. 
.SAT NIGHT...N winds less than 10 kt within 90 nm of coast of
Colombia, and NE 10 to 15 kt elsewhere. Seas 3 ft. 
.SUN...Within 90 nm of coast of Colombia, Variable winds less
than 10 kt, becoming SW less than 10 kt in the afternoon.
Elsewhere, E winds 10 to 20 kt. Seas 3 ft. 
.SUN NIGHT...W winds less than 10 kt within 90 nm of coast of
Colombia, and SE 10 to 15 kt elsewhere. Seas 3 ft. 
.MON...W winds less than 10 kt within 90 nm of coast of
Colombia, and SE 10 to 20 kt elsewhere. Seas 3 ft. 
.MON NIGHT...NE winds less than 10 kt within 90 nm of coast of
Colombia, and E 10 to 20 kt elsewhere. Seas 3 ft. 
.TUE...Within 90 nm of coast of Colombia, E winds less than
10 kt in the morning, becoming variable winds less than 10 kt.
Elsewhere, E winds 10 to 20 kt. Seas 3 ft. 

SW Caribbean S of 11N

.TONIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI...W winds 10 to 20 kt. Seas 3 to 4 ft. 
.FRI NIGHT...NW winds 10 to 20 kt, shifting to SW 15 to 25 kt
after midnight. 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. 
.SUN...SW winds 10 to 15 kt. Seas 2 ft or less. 
.SUN NIGHT...SW winds 10 to 20 kt. Seas 2 ft or less. 
.MON...S winds 10 to 20 kt. Seas 2 ft or less. 
.MON NIGHT...S winds 10 to 20 kt, shifting to NW 10 to 15 kt
after midnight. Seas 2 ft or less. 
.TUE...N winds less than 10 kt. Seas 2 ft or less. 

Caribbean between 64W and 72W

.TONIGHT...NE winds 15 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 3 to 4 ft. 
.FRI...E winds 10 to 20 kt. Gulf of Venezuela, seas 3 ft in the
morning, subsiding to 2 ft or less. Elsewhere, seas 3 to 5 ft. 
.FRI NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 5 ft elsewhere. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. SW 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 NIGHT...E winds 10 to 15 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, shifting to
SW 10 kt in the afternoon. Elsewhere, E winds 10 to 15 kt. Seas
2 ft or less Gulf of Venezuela, and 3 ft elsewhere. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 ft. 
.MON...E winds less than 10 kt. Seas 3 ft. 
.MON NIGHT...NE winds less than 10 kt. 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. 

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

...TROPICAL STORM WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 25 to
35 kt. Seas 8 to 13 ft. 
.FRI...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to 40 kt,
increasing to 45 to 55 kt in the afternoon. Seas 10 to 15 ft. 
.FRI NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 45 to
55 kt. Seas 10 to 15 ft. 
.SAT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 50 to
60 kt. Seas 9 to 14 ft. 
.SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. SE winds 55 to
65 kt, diminishing to 45 to 55 kt after midnight. Seas 7 to
10 ft, subsiding to 5 to 7 ft after midnight. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. 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. E winds 40 to 50 kt. Seas
7 to 10 ft. 
.FRI...TROPICAL STORM CONDITIONS EXPECTED. SE winds 40 to
50 kt. Seas 6 to 9 ft. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 30 to
40 kt, diminishing to 10 to 20 kt after midnight. Seas 5 to
7 ft. 
.SAT...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.TUE...E winds 10 to 15 kt. Seas 3 to 5 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Tropical Storm Tammy is near 13.7N 56.6W at 5 PM
EDT,
and is moving west-northwest at 11 kt. Maximum sustained winds
are 50 kt with gusts to 60 kt, and the minimum central pressure
is 1001 mb. Tammy will intensify to hurricane strength as if
moves by the northern Leeward Islands through Sat. Hurricane
Tammy will reach 19.5N 63.1W Sun morning, and 21.0N 63.3W Sun
afternoon then change little in intensity as it moves northward
across the waters east of 65W through Tue. Elsewhere, a
stationary front from 31N58W to eastern Cuba will weaken today
before dissipating. High pressure will build over the area in
the
wake of the front. The next frontal system will move offshore
the southeastern United States Fri night. Fresh to strong winds
and rough seas are forecast north of 27N Fri night through Sat
night with this system. 

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

.TONIGHT...N winds 10 to 15 kt, shifting to NW after midnight.
Seas 3 to 4 ft. 
.FRI...NW winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI NIGHT...W winds 15 to 25 kt. Seas 4 to 6 ft. 
.SAT...W winds 15 to 25 kt. Seas 6 to 9 ft. 
.SAT NIGHT...W 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 20 kt. Seas 4 to 6 ft. 
.TUE...NE winds 15 to 20 kt. Seas 5 to 7 ft. 

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

.TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI...SW winds 10 to 20 kt W of 70W, and S 15 to 25 kt
elsewhere. Seas 5 to 7 ft. 
.FRI NIGHT...W of 70W, W winds 10 to 20 kt, becoming SW 20 to
30 kt after midnight. Elsewhere, S winds 15 to 25 kt. Seas 5 to
7 ft W of 70W, and 7 to 10 ft elsewhere. 
.SAT...W winds 20 to 30 kt W of 70W, and SW 20 to 30 kt
elsewhere. Seas 7 to 10 ft. 
.SAT NIGHT...W of 70W, W winds 10 to 20 kt. Elsewhere, W winds
15 to 25 kt, diminishing to 10 to 15 kt after midnight. Seas
8 to 11 ft. 
.SUN...W winds 10 to 15 kt. Seas 6 to 9 ft. 
.SUN NIGHT...W of 70W, NW winds 10 to 15 kt. Elsewhere, NW winds
10 to 15 kt, diminishing to less than 10 kt after midnight. Seas
6 to 9 ft. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. 
.MON NIGHT...N winds 10 to 20 kt. Seas 7 to 10 ft. 
.TUE...NE winds 15 to 20 kt. Seas 7 to 10 ft. 

Bahamas N of 22N

.TONIGHT...E winds 10 to 15 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less. 
.FRI...S winds 10 to 15 kt, shifting to NW in the afternoon.
Seas 2 ft or less, building to 3 ft in the afternoon. 
.FRI NIGHT...NW winds less than 10 kt, increasing to 10 to 20 kt
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...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.SUN...NE winds less than 10 kt, shifting to N in the afternoon.
Seas 3 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. 
.MON NIGHT...NE winds 10 to 20 kt. Seas 3 ft. 
.TUE...NE winds 10 to 20 kt. Seas 3 to 5 ft. 

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

.TONIGHT...SE winds 10 to 20 kt. Seas 4 to 5 ft W of 70W, and
6 to 8 ft elsewhere. 
.FRI...S winds 10 to 20 kt. Seas 4 to 5 ft W of 70W, and 6 to
8 ft elsewhere. 
.FRI NIGHT...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 6 to 8 ft. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to
15 kt. Seas 6 to 8 ft. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. 
.MON NIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft W of 70W, and
8 to 11 ft elsewhere. 
.TUE...NE winds 10 to 20 kt. Seas 6 to 9 ft. 

ATLC waters S of 22N W of 65W

.TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.SAT...S winds 10 to 15 kt, shifting to SE in the afternoon.
Seas 3 to 5 ft. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to
15 kt. Seas 4 to 6 ft. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. 
.MON NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...NE winds 10 to 20 kt. Seas 4 to 6 ft. 

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

...TROPICAL STORM WARNING...

.TONIGHT...E winds 15 to 25 kt. Seas 8 to 12 ft. 
.FRI...E winds 15 to 25 kt. Seas 8 to 12 ft. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 20 to
30 kt. Seas 8 to 12 ft. 
.SAT...TROPICAL STORM CONDITIONS EXPECTED. E winds 20 to 30 kt,
becoming SE 30 to 40 kt in the afternoon. Seas 9 to 14 ft. 
.SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. SE winds 45 to
55 kt, increasing to 55 to 65 kt after midnight. Seas 10 to
15 ft. 
.SUN...HURRICANE CONDITIONS POSSIBLE. 
.SUN NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. 
.MON NIGHT...SW winds 10 to 20 kt. Seas 5 to 7 ft. 
.TUE...W winds 10 to 15 kt. Seas 5 to 6 ft.