637 
FZNT31 KNHC 222120
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
520 PM EDT Tue Aug 22 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 Franklin is near 15.8N 71.4W at 5 PM
EDT, and is moving northwest at 6 kt. Maximum sustained winds
are 35 kt with gusts to 45 kt, and the minimum central pressure
is 1002 mb. Franklin will move to near 17.0N 71.3W late tonight,
inland the Dominican Republic near 19.1N 70.9W Wed afternoon,
then back over water near 20.9N 70.3W late Wed night with
maximum sustained winds 35 kt gusts 45 kt, and begin to
gradually intensify as it moves farther away from the Caribbean
through the end of the week. Gert is now a post-tropical low
near 17N60W with pressure of 1008 mb. The low will continue to
weaken as it moves to near 19N60W early Wed and drift slightly
southeastward Thu, dissipating by early Thu evening. Conditions
in the Caribbean will improve Wed night into early Thu. 

NW Caribbean W of 85W

.TONIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU...E winds less than 10 kt. Seas 3 to 4 ft. 
.THU NIGHT...E winds less than 10 kt. Seas 3 ft. 
.FRI...NE winds less than 10 kt. Seas 2 ft or less.
.FRI NIGHT...E winds less than 10 kt. Seas 2 ft or less,
building to 3 ft after midnight. 
.SAT...N winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less. 
.SAT NIGHT...E winds less than 10 kt. Seas 2 ft or less. 
.SUN...SW winds less than 10 kt, shifting to NW in the
afternoon. Seas 2 ft or less. 

Caribbean N of 15N between 72W and 85W

.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 15 to
25 kt. Seas 4 to 6 ft. 
.WED...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.WED NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.THU...SE winds 10 to 20 kt. Seas 3 to 4 ft. 
.THU NIGHT...S of 18N, S winds less than 10 kt, increasing to
10 to 15 kt after midnight. Elsewhere, SE winds less than 10 kt.
Seas 3 ft in the evening, subsiding to 2 ft or less. 
.FRI...S winds 10 to 15 kt S of 18N, and SE less than 10 kt
elsewhere. Seas 2 ft or less. 
.FRI NIGHT...S winds less than 10 kt. Seas 2 ft or less. 
.SAT...S of 18N, SW winds less than 10 kt, increasing to 10 to
15 kt in the afternoon. Elsewhere, SE winds less than 10 kt,
shifting to W in the afternoon. Seas 2 ft or less. 
.SAT NIGHT...S of 18N, SW winds 10 to 15 kt, diminishing to less
than 10 kt after midnight. Elsewhere, S winds less than 10 kt.
Seas 2 ft or less. 
.SUN...SW winds less than 10 kt. Seas 2 ft or less. 

Caribbean from 11N to 15N W of 72W

.TONIGHT...N winds 10 to 20 kt, shifting to S after midnight.
Seas 4 to 6 ft. 
.WED...SW winds 15 to 25 kt. Seas 4 to 6 ft. 
.WED NIGHT...Within 90 nm of coast of Colombia, W winds 10 to
15 kt, shifting to S after midnight. Elsewhere, SW winds 15 to
25 kt. Seas 4 to 6 ft. 
.THU...S winds 10 to 20 kt. Seas 3 to 4 ft. 
.THU NIGHT...Within 90 nm of coast of Colombia, N winds less
than 10 kt, shifting to NE after midnight. Elsewhere, S winds
10 to 15 kt, shifting to E after midnight. Seas 2 to 3 ft. 
.FRI...SE winds 10 to 15 kt. Seas 2 to 3 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. 
.SAT...E winds 10 to 15 kt. Seas 2 ft or less. 
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. 
.SUN...SE winds less than 10 kt. Seas 2 ft or less. 

SW Caribbean S of 11N

.TONIGHT...SW winds 20 to 30 kt. Seas 4 to 6 ft. 
.WED...SW winds 15 to 25 kt. Seas 4 to 6 ft. 
.WED NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. 
.THU...SE winds 10 to 15 kt. Seas 3 ft. 
.THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...NE winds 10 to 15 kt. Seas 2 ft or less.
.FRI NIGHT...NE winds less than 10 kt. Seas 2 ft or less. 
.SAT...E winds less than 10 kt. Seas 2 ft or less. 
.SAT NIGHT...E winds less than 10 kt. Seas 2 ft or less. 
.SUN...S winds less than 10 kt. Seas 2 ft or less. 

Caribbean between 64W and 72W

...TROPICAL STORM WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS. Gulf of Venezuela, NE
winds 10 to 15 kt, diminishing to less than 10 kt after
midnight. Elsewhere, E winds 30 to 40 kt, becoming SE 40 to
50 kt after midnight. Seas 2 ft or less Gulf of Venezuela, and
6 to 8 ft elsewhere. 
.WED...TROPICAL STORM CONDITIONS EXPECTED. Gulf of Venezuela, N
winds less than 10 kt. Elsewhere, SE winds 35 to 45 kt,
diminishing to 15 to 25 kt in the afternoon. Seas 2 ft or less
Gulf of Venezuela, and 5 to 7 ft elsewhere. 
.WED NIGHT...N winds 10 to 20 kt Gulf of Venezuela, and SE 15 to
25 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 4 to
6 ft elsewhere. 
.THU...N winds less than 10 kt Gulf of Venezuela, and SE 10 to
20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to
4 ft elsewhere. 
.THU NIGHT...E winds 10 to 15 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 4 ft elsewhere. 
.FRI...SE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 2 ft or less Gulf of Venezuela, and 3 ft
elsewhere. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. 
.SAT...NE winds less than 10 kt Gulf of Venezuela, and SE 10 to
15 kt elsewhere. Seas 2 ft or less. 
.SAT NIGHT...SE winds 10 to 20 kt. Seas 3 ft. 
.SUN...NE winds less than 10 kt Gulf of Venezuela, and SE 10 to
20 kt elsewhere. Seas 3 ft. 

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

.TONIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft. 
.THU...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. 
.FRI...SE winds less than 10 kt. Seas 3 to 4 ft. 
.FRI NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. 
.SAT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. 
.SUN...SE winds 10 to 15 kt. Seas 3 to 4 ft. 

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

.TONIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.THU...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.SUN...SE winds 10 to 15 kt. Seas 3 to 4 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Tropical Storm Franklin is in the Caribbean Sea near
15.8N 71.4W at 5 PM EDT, and is moving northwest at 6 kt. 
Maximum sustained winds are 35 kt with gusts to 45 kt, and the 
minimum central pressure is 1002 mb. Franklin will move to near 
17.0N 71.3W late tonight, inland the Dominican Republic near 
19.1N 70.9W Wed afternoon, then back over water near 20.9N 70.3W
late Wed night with maximum sustained winds 35 kt gusts 45 kt, 
and begin to gradually intensify as it moves to near 22.0N 69.3W
Thu afternoon, to near 22.5N 68.2W late Thu night night with 
maximum sustained winds 45 kt gusts 55 kt, to near 22.9N 67.3W 
Fri afternoon with maximum sustained winds 50 kt gusts 60 kt, to
near 24.3N 66.7W Sat afternoon with maximum sustained winds 60 
kt gusts 75 kt and reach hurricane strength near 27.6N 67.7W Sun
afternoon with maximum sustained winds 75 kt gusts 90 kt. The 
remnant low of former tropical cyclone Gert is expected to reach
near 19N60W by early Wed, with little or no impacts on winds and
seas. A cold front is expected to move across the waters E of 
northern Florida Wed through Thu followed by fresh to strong 
northeast winds and building seas. 

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

.TONIGHT...NE to E winds 10 to 15 kt. Seas 3 to 4 ft.
.WED...NE winds less than 10 kt, increasing to 10 to 20 kt in
the afternoon. Seas 3 to 4 ft. 
.WED NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 5 to 6 ft. 
.FRI...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.SAT...NE winds less than 10 kt. Seas 4 to 5 ft. 
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.SUN...E winds less than 10 kt. Seas 4 ft. 

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

.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.WED...W of 70W, NE winds less than 10 kt, increasing to 10 to
15 kt in the afternoon. Elsewhere, W winds less than 10 kt. Seas
3 to 4 ft. 
.WED NIGHT...W of 70W, E winds 10 to 20 kt. Elsewhere, W winds
less than 10 kt, shifting to SE after midnight. Seas 3 to 5 ft. 
.THU...E winds 15 to 25 kt W of 70W, and E less than 10 kt
elsewhere. Seas 5 to 7 ft. 
.THU NIGHT...W of 70W, E winds 10 to 20 kt. Elsewhere, E winds
10 to 15 kt, diminishing to less than 10 kt after midnight. Seas
4 to 6 ft. 
.FRI...NE winds 10 to 15 kt W of 70W, and E less than 10 kt
elsewhere. Seas 5 to 6 ft. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.SUN...NE winds 15 to 25 kt W of 70W, and E 55 to 70 kt
elsewhere. Seas 6 to 9 ft W of 70W, and 13 to 18 ft elsewhere. 

Bahamas N of 22N

.TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...NE winds 10 to 20 kt. Seas 3 to 4 ft. 
.WED NIGHT...NE winds 10 to 20 kt. Seas 3 ft. 
.THU...NE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 ft. 
.THU NIGHT...NE winds 10 to 15 kt, diminishing to less than
10 kt after midnight. Seas 3 to 4 ft. 
.FRI...NE winds less than 10 kt. Seas 3 ft. 
.FRI NIGHT...NE winds less than 10 kt. Seas 3 ft.
.SAT...NE winds less than 10 kt. Seas 3 ft. 
.SAT NIGHT...NE winds less than 10 kt. Seas 3 ft. 
.SUN...N winds less than 10 kt. Seas 2 ft or less. 

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

...TROPICAL STORM WARNING...

.TONIGHT...SE winds 10 to 20 kt. Seas 4 to 5 ft. 
.WED...SE winds 10 to 20 kt. Seas 4 to 5 ft. 
.WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 20 to
30 kt. Seas 4 to 6 ft. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 30 kt
W of 70W, and SE 20 to 30 kt elsewhere. Seas 5 to 7 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to
20 kt W of 70W, and SE 35 to 45 kt elsewhere. Seas 5 to 7 ft W
of 70W, and 7 to 10 ft elsewhere. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.SUN...NW winds 15 to 25 kt W of 70W, and W 55 to 65 kt
elsewhere. W of 70W, seas 5 to 7 ft. Elsewhere, seas 8 to 13 ft,
subsiding to 7 to 10 ft in the afternoon. 

ATLC waters S of 22N W of 65W

...TROPICAL STORM WARNING...

.TONIGHT...SE winds 15 to 25 kt. Seas 4 to 6 ft. 
.WED...TROPICAL STORM CONDITIONS POSSIBLE. E winds 20 to 30 kt.
Seas 5 to 7 ft. 
.WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 30 to
40 kt. Seas 5 to 7 ft. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 20 to
30 kt. Seas 5 to 7 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W winds 15 to
25 kt. Seas 4 to 6 ft. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT NIGHT...W winds 10 to 20 kt. Seas 3 to 5 ft. 
.SUN...SW winds 10 to 20 kt. Seas 3 to 5 ft. 

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

.TONIGHT...E winds 10 to 20 kt. Seas 5 to 6 ft. 
.WED...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED NIGHT...E winds less than 10 kt, shifting to SE after
midnight. Seas 4 to 5 ft. 
.THU...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 4 ft. 
.FRI...E winds 15 to 25 kt. Seas 4 ft. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SAT...S winds 15 to 25 kt. Seas 4 to 6 ft. 
.SAT NIGHT...S winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN...S winds 10 to 20 kt. Seas 4 to 5 ft.