000
FZNT31 KNHC 182112
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
512 PM EDT Wed Oct 18 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 13.0N 51.7W at 5 PM
EDT, and is moving west at 20 kt. Maximum sustained winds are
35 kt with gusts to 45 kt, and the minimum central pressure is
1007 mb. Tammy will move to 13.1N 53.7W Thu morning, 13.5N 55.9W
Thu afternoon, 14.1N 58.2W Fri morning, 15.0N 60.2W Fri
afternoon, 15.9N 61.7W Sat morning, and 17.5N 62.7W Sat
afternoon. Tammy will change little in intensity as it moves to
near 21.4N 63.4W Sun afternoon. A stationary front extends from
eastern Cuba to NE Honduras. The front should remain in place
through tonight before dissipating on Thu. Fresh to locally
strong NE winds and seas of 8 ft will persist over the northwest
Caribbean W of the front through tonight as high pressure builds
over the area. 

NW Caribbean W of 85W

.TONIGHT...NE winds 15 to 25 kt. Seas 5 to 7 ft. 
.THU...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI...N winds 10 to 15 kt. Seas 3 ft. 
.FRI NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT...N winds less than 10 kt. Seas 3 ft. 
.SAT NIGHT...NE winds less than 10 kt. Seas 3 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 15 kt. Seas 3 ft. 

Caribbean N of 15N between 72W and 85W

.TONIGHT...E winds 15 to 25 kt S of 18N, and NE 10 to 20 kt
elsewhere. Seas 3 to 5 ft. 
.THU...E winds 10 to 20 kt. S of 18N, seas 3 to 5 ft. Elsewhere,
seas 3 to 4 ft in the morning, subsiding to 2 ft or less. 
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft S of 18N, and
2 ft or less elsewhere. 
.FRI...S of 18N, E winds 10 to 15 kt. Elsewhere, NW winds less
than 10 kt, shifting to W in the afternoon. Seas 3 ft. 
.FRI NIGHT...S of 18N, NE winds 10 to 15 kt, diminishing to less
than 10 kt after midnight. Elsewhere, NW winds 10 to 15 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...S of 18N, NE winds less than 10 kt, increasing to
10 to 15 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 15 kt. Seas 2 ft or less. 
.MON...E winds 10 to 15 kt. Seas 3 ft. 

Caribbean from 11N to 15N W of 72W

.TONIGHT...NE winds 15 to 25 kt. Seas 3 to 5 ft. 
.THU...E winds 15 to 25 kt. Seas 3 to 5 ft. 
.THU NIGHT...NE winds 10 to 20 kt within 90 nm of coast of
Colombia, and NE 15 to 25 kt elsewhere. Seas 3 to 5 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI NIGHT...Within 90 nm of coast of Colombia, W winds 10 to
15 kt, shifting to NW after midnight. Elsewhere, NE winds 10 to
15 kt. Seas 3 to 4 ft. 
.SAT...W winds less than 10 kt within 90 nm of coast of
Colombia, and E 10 to 15 kt elsewhere. Seas 3 ft. 
.SAT NIGHT...NW winds less than 10 kt within 90 nm of coast of
Colombia, and NE 10 to 15 kt elsewhere. Seas 3 ft. 
.SUN...SW 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 SE 10 to 15 kt elsewhere. Seas 3 ft. 

SW Caribbean S of 11N

.TONIGHT...N winds 10 to 20 kt. Seas 2 ft or less, building to
3 ft after midnight. 
.THU...N winds 15 to 25 kt. Seas 3 to 5 ft. 
.THU NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI...W winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI NIGHT...W winds 10 to 15 kt. Seas 3 ft. 
.SAT...W winds 10 to 15 kt. Seas 3 ft. 
.SAT NIGHT...W 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 15 kt. Seas 2 ft or less. 
.MON...S winds 10 to 15 kt. Seas 2 ft or less. 

Caribbean between 64W and 72W

.TONIGHT...E winds 15 to 25 kt. Seas 3 to 4 ft. 
.THU...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.THU NIGHT...E winds 10 to 20 kt. 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...W 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...NE winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 4 ft elsewhere. 
.SUN...Gulf of Venezuela, E winds less than 10 kt in the
morning, becoming variable winds less than 10 kt. Elsewhere, E
winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to
4 ft elsewhere. 
.SUN NIGHT...Gulf of Venezuela, NE winds less than 10 kt.
Elsewhere, NE winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less Gulf of Venezuela, and 3 ft
elsewhere. 
.MON...Gulf of Venezuela, Variable winds less than 10 kt,
becoming N less than 10 kt in the afternoon. Elsewhere, E winds
10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 3 ft
elsewhere. 

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

...TROPICAL STORM WARNING...

.TONIGHT...E winds 15 to 25 kt. Seas 6 to 8 ft. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. E winds 20 to 30 kt.
Seas 7 to 10 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to
40 kt. Seas 8 to 11 ft. 
.FRI...TROPICAL STORM CONDITIONS EXPECTED. E winds 35 to 45 kt,
increasing to 45 to 55 kt in the afternoon. Seas 8 to 13 ft. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 45 to
55 kt. Seas 8 to 11 ft. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...SE winds 10 to 20 kt. Seas 4 to 6 ft. 

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

...TROPICAL STORM WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 15 to
25 kt. Seas 3 to 5 ft. 
.THU...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to 40 kt,
increasing to 40 to 50 kt in the afternoon. Seas 5 to 7 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 45 to
55 kt. Seas 6 to 9 ft. 
.FRI...TROPICAL STORM CONDITIONS EXPECTED. SE winds 45 to
55 kt. Seas 6 to 9 ft. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 35 to
45 kt, diminishing to 25 to 35 kt after midnight. Seas 6 to
9 ft. 
.SAT...SE winds 15 to 25 kt. Seas 5 to 7 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN...SE winds 15 to 25 kt. Seas 4 to 6 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...E winds 10 to 20 kt. Seas 4 to 6 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Tropical Storm Tammy is near 13.0N 51.7W at 5 PM
EDT, and is moving west at 20 kt. Maximum sustained winds are 35
kt with gusts to 45 kt, and the minimum central pressure is 1007
mb. Tammy will move to 13.1N 53.7W Thu morning, 13.5N 55.9W Thu 
afternoon, 14.1N 58.2W Fri morning, 15.0N 60.2W Fri afternoon, 
15.9N 61.7W Sat morning, and 17.5N 62.7W Sat afternoon. Tammy 
will change little in intensity as it moves to near 21.4N 63.4W 
Sun afternoon. A stationary front extends from 31N63W to eastern 
Cuba. The front will remain in place before dissipating Thu. 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...E winds 10 to 15 kt. Seas 3 ft. 
.THU...NE winds less than 10 kt, increasing to 10 to 15 kt in
the afternoon. Seas 3 ft. 
.THU NIGHT...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 4 ft. 
.FRI NIGHT...W winds 10 to 20 kt, increasing to 20 to 30 kt
after midnight. Seas 4 to 6 ft. 
.SAT...W winds 15 to 25 kt. Seas 5 to 7 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...W winds 10 to 15 kt, shifting to NW after midnight.
Seas 3 to 5 ft. 
.MON...N winds less than 10 kt, shifting to NE in the afternoon.
Seas 3 to 5 ft. 

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

.TONIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.THU...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...SE winds 10 to 20 kt W of 70W, and SE 15 to 25 kt
elsewhere. Seas 4 to 6 ft. 
.FRI...S winds 15 to 25 kt. Seas 5 to 7 ft. 
.FRI NIGHT...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 4 to
6 ft W of 70W, and 6 to 9 ft elsewhere. 
.SAT...W winds 20 to 30 kt. Seas 6 to 9 ft W of 70W, and 7 to
10 ft elsewhere. 
.SAT NIGHT...W winds 15 to 25 kt. Seas 7 to 10 ft. 
.SUN...W winds 10 to 20 kt. Seas 6 to 9 ft. 
.SUN NIGHT...W of 70W, W winds 10 to 15 kt, diminishing to less
than 10 kt after midnight. Elsewhere, N winds less than 10 kt.
Seas 6 to 8 ft. 
.MON...NW winds less than 10 kt, shifting to N in the afternoon.
Seas 6 to 8 ft. 

Bahamas N of 22N

.TONIGHT...NE winds 10 to 20 kt. Seas 3 ft. 
.THU...E winds 10 to 20 kt. Seas 3 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 2 ft or less. 
.FRI...SW winds 10 to 20 kt. Seas 2 ft or less. 
.FRI NIGHT...NW winds 10 to 15 kt. Seas 2 ft or less. 
.SAT...NW winds 10 to 15 kt. Seas 3 ft. 
.SAT NIGHT...N winds less than 10 kt. Seas 3 ft. 
.SUN...NE winds less than 10 kt, increasing to 10 to 15 kt 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. 

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

.TONIGHT...E winds 10 to 20 kt W of 70W, and E 15 to 25 kt
elsewhere. Seas 4 to 5 ft. 
.THU...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...SE winds 10 to 20 kt. Seas 5 to 7 ft. 
.FRI...S winds 10 to 20 kt W of 70W, and SE 15 to 25 kt
elsewhere. Seas 4 to 5 ft W of 70W, and 6 to 8 ft elsewhere. 
.FRI NIGHT...SW winds 10 to 20 kt W of 70W, and S 15 to 25 kt
elsewhere. 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...W of 70W, NW winds 10 to 15 kt, shifting to N after
midnight. Elsewhere, S winds 10 to 15 kt. Seas 6 to 8 ft. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.MON...NE winds 10 to 15 kt W of 70W, and N 15 to 25 kt
elsewhere. Seas 5 to 7 ft W of 70W, and 7 to 9 ft elsewhere. 

ATLC waters S of 22N W of 65W

.TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.THU...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 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 NE in the afternoon.
Seas 4 to 6 ft. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN NIGHT...NE winds 20 to 30 kt. Seas 4 to 6 ft. 
.MON...NE winds 10 to 20 kt. Seas 4 to 6 ft. 

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

.TONIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft. 
.THU...E winds 20 to 30 kt. Seas 7 to 10 ft. 
.THU NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. 
.FRI...E winds 15 to 20 kt. Seas 8 to 10 ft. 
.FRI NIGHT...E winds 15 to 25 kt. Seas 8 to 10 ft. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.MON...S winds 15 to 25 kt. Seas 7 to 10 ft.