000
FZNT31 KNHC 272117
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
517 PM EDT Sun Aug 27 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 Idalia is near 20.1N 85.5W at 5 PM
EDT, moving northeast at 3 kt. Maximum sustained winds are 35 kt
with gusts to 45 kt. Minimum central pressure is 995 mb. Idalia
will move to near 20.5N 85.3W Mon morning, to near 21.7N 85.0W
Mon afternoon, strengthen to a hurricane near 23.4N 84.9W Tue
morning, reach 25.6N 84.5W Tue afternoon, and move inland across
NE Florida and weaken to a tropical storm Wed afternoon. Other
than Idalia, gentle to moderate winds will prevail across the
basin E of 80W through early Mon. High pressure will build
westward across the western Atlantic late Mon through Thu as
Hurricane Franklin lifts north of the region. This will lead to
moderate to fresh trade winds in the eastern Caribbean by Mon
night, then in the central Caribbean by Tue. 

NW Caribbean W of 85W

...TROPICAL STORM WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS. SW winds 35 to 45 kt.
Seas 4 to 6 ft. 
.MON...TROPICAL STORM CONDITIONS EXPECTED. SW winds 35 to
45 kt. Seas 5 to 7 ft. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 35 to
45 kt, becoming S 20 to 30 kt after midnight. Seas 5 to 7 ft. 
.TUE...SW winds 20 to 30 kt. Seas 4 to 6 ft. 
.TUE NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...S winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI...E winds 10 to 20 kt. Seas 3 to 5 ft. 

Caribbean N of 15N between 72W and 85W

...TROPICAL STORM WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 10 to
20 kt S of 18N, and S 30 to 40 kt elsewhere. Seas 2 ft or less S
of 18N, and 4 to 6 ft elsewhere. 
.MON...TROPICAL STORM CONDITIONS EXPECTED. SE winds 10 to 20 kt
S of 18N, and S 45 to 55 kt elsewhere. Seas 3 to 5 ft S of 18N,
and 5 to 7 ft elsewhere. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S of 18N, SE
winds 10 to 20 kt. Elsewhere, S winds 35 to 45 kt, diminishing
to 25 to 35 kt after midnight. Seas 3 to 5 ft S of 18N, and 5 to
7 ft elsewhere. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 10 to 20 kt
S of 18N, and S 15 to 25 kt elsewhere. Seas 4 to 6 ft. 
.TUE NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.WED NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU...E winds 10 to 20 kt. Seas 5 to 7 ft S of 18N, and 3 to
4 ft elsewhere. 
.THU NIGHT...E winds 15 to 25 kt S of 18N, and E 10 to 15 kt
elsewhere. Seas 5 to 7 ft S of 18N, and 3 to 4 ft elsewhere. 
.FRI...E winds 15 to 25 kt S of 18N, and E 10 to 15 kt
elsewhere. Seas 6 to 9 ft S of 18N, and 3 to 5 ft elsewhere. 

Caribbean from 11N to 15N W of 72W

.TONIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less. 
.MON...E winds less than 10 kt within 90 nm of coast of
Colombia, and SE 10 to 15 kt elsewhere. Seas 2 ft or less. 
.MON NIGHT...E winds 10 to 20 kt. Seas 2 ft or less, building to
3 ft after midnight. 
.TUE...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.TUE NIGHT...E winds 15 to 25 kt. Seas 3 to 5 ft. 
.WED...E winds 15 to 25 kt. Seas 6 to 7 ft within 90 nm of coast
of Colombia, and 4 to 6 ft elsewhere. 
.WED NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. 
.THU...E winds 10 to 20 kt within 90 nm of coast of Colombia,
and E 15 to 25 kt elsewhere. Seas 5 to 7 ft. 
.THU NIGHT...E winds 10 to 20 kt within 90 nm of coast of
Colombia, and E 15 to 25 kt elsewhere. Seas 5 to 7 ft. 
.FRI...E winds 10 to 20 kt within 90 nm of coast of Colombia,
and E 15 to 25 kt elsewhere. Seas 6 to 8 ft. 

SW Caribbean S of 11N

.TONIGHT...SE winds less than 10 kt. Seas 2 ft or less. 
.MON...S winds less than 10 kt. Seas 2 ft or less. 
.MON NIGHT...Variable winds less than 10 kt, becoming NE less
than 10 kt after midnight. Seas 2 ft or less. 
.TUE...SE winds less than 10 kt. Seas 2 ft or less. 
.TUE NIGHT...NE winds less than 10 kt. Seas 2 ft or less. 
.WED...N winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft
in the afternoon. 
.WED NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft.
.THU...N winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU NIGHT...N winds less than 10 kt. Seas 4 to 6 ft. 
.FRI...SE winds 10 to 15 kt, shifting to W in the afternoon.
Seas 3 to 5 ft. 

Caribbean between 64W and 72W

.TONIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.MON...Gulf of Venezuela, E winds less than 10 kt, shifting to
SW in the afternoon. Elsewhere, SE winds 10 to 20 kt. Seas 2 ft
or less Gulf of Venezuela, and 3 to 5 ft elsewhere. 
.MON NIGHT...E winds 10 to 20 kt. Gulf of Venezuela, seas 2 ft
or less, building to 3 ft after midnight. Elsewhere, seas 4 to
6 ft. 
.TUE...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and
4 to 6 ft elsewhere. 
.TUE NIGHT...E winds 15 to 25 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 Gulf of Venezuela, and E 15 to 25 kt
elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 5 to 7 ft
elsewhere. 
.THU NIGHT...E winds 10 to 20 kt Gulf of Venezuela, and E 15 to
25 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 5 to 7 ft
elsewhere. 
.FRI...E winds 10 to 20 kt Gulf of Venezuela, and E 15 to 25 kt
elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft
elsewhere. 

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

.TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...E winds 10 to 15 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 15 kt. Seas 4 to 6 ft. 
.THU...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.FRI...E winds 10 to 15 kt. Seas 4 to 5 ft. 

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

.TONIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.MON...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE...E winds 10 to 20 kt. Seas 4 to 6 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 4 to 6 ft. 
.THU...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Hurricane Franklin is near 25.9N 70.0W at 5 PM EDT, 
moving north-northwest at 7 kt. Maximum sustained winds are 85 
kt with gusts to 105 kt. Minimum central pressure is 970 mb. 
Franklin will continue to intensify and move to near 27.0N 70.6W
Mon morning, near 28.5N 71.0W Mon afternoon, near 30.0N 70.9W 
Tue morning, near 31.5N 69.9W Tue afternoon, then turn more NE
and exit the region. Meanwhile, Tropical Storm Idalia is near 
20.1N 85.5W at 5 PM EDT, moving northeast at 3 kt. Maximum 
sustained winds are 35 kt with gusts to 45 kt. Minimum central 
pressure is 995 mb. Idalia will move to near 20.5N 85.3W Mon 
morning, strengthen to a hurricane near 23.4N 84.9W Tue morning,
then move inland across northern Florida Wed, producing 
increasing winds and seas offshore of central and northern 
Florida. 

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

.TONIGHT...SE winds 10 kt. Seas 4 to 6 ft. 
.MON...E winds less than 10 kt. Seas 6 to 8 ft. 
.MON NIGHT...E winds less than 10 kt, shifting to S after
midnight. Seas 6 to 8 ft. 
.TUE...S winds less than 10 kt. Seas 6 to 8 ft. 
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S winds 10 to
20 kt. Seas 6 to 8 ft. 
.WED...TROPICAL STORM CONDITIONS POSSIBLE. 
.WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.THU...SW winds 20 to 30 kt. Seas 8 to 11 ft. 
.THU NIGHT...W winds 15 to 25 kt. Seas 6 to 9 ft. 
.FRI...NW winds 10 to 20 kt. Seas 5 to 7 ft. 

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

...HURRICANE WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS. W of 70W, E winds 35 to
45 kt, increasing to 75 to 85 kt after midnight. Elsewhere, SE
winds 35 to 45 kt, increasing to 45 to 55 kt after midnight.
Seas 9 to 14 ft. 
.MON...HURRICANE CONDITIONS EXPECTED. NE winds 85 to 95 kt W of
70W, and SE 40 to 50 kt elsewhere. Seas 12 to 17 ft. 
.MON NIGHT...HURRICANE CONDITIONS EXPECTED. NW winds 85 to
105 kt W of 70W, and S 40 to 50 kt elsewhere. Seas 14 to 19 ft. 
.TUE...HURRICANE CONDITIONS EXPECTED. W of 70W, NW winds 90 to
110 kt, becoming W 80 to 100 kt in the afternoon,Seas 14 to
19 ft, subsiding to 10 to 15 ft in the afternoon. Elsewhere, S
winds 55 to 65 kt, increasing to 75 to 85 kt in the
afternoon,Seas 14 to 19 ft. 
.TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. W of 70W, W winds
30 to 40 kt,Seas 8 to 13 ft, subsiding to 7 to 10 ft after
midnight. 20 to 30 kt after midnight. Elsewhere, SW winds 35 to
45 kt,Seas 11 to 16 ft. 
.WED...TROPICAL STORM CONDITIONS POSSIBLE. 
.WED NIGHT...SW winds 15 to 25 kt W of 70W, and W 10 to 20 kt
elsewhere. Seas 6 to 9 ft. 
.THU...SW winds 15 to 25 kt W of 70W, and W 10 to 15 kt
elsewhere. Seas 7 to 10 ft W of 70W, and 6 to 8 ft elsewhere. 
.THU NIGHT...SW winds 15 to 25 kt W of 70W, and NW less than
10 kt elsewhere. Seas 7 to 10 ft W of 70W, and 4 to 6 ft
elsewhere. 
.FRI...SW winds 10 to 20 kt W of 70W, and E less than 10 kt
elsewhere. Seas 5 to 7 ft. 

Bahamas N of 22N

.TONIGHT...E winds less than 10 kt, shifting to SW after
midnight. Seas 3 to 5 ft. 
.MON...SW winds less than 10 kt. Seas 3 to 5 ft. 
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE...S winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE NIGHT...SE winds 10 to 20 kt. Seas 3 to 4 ft. 
.WED...S winds 15 to 25 kt. Seas 3 to 5 ft. 
.WED NIGHT...S winds 15 to 25 kt. Seas 3 to 4 ft.
.THU...SE winds 10 to 20 kt. Seas 3 ft. 
.THU NIGHT...SE winds 10 to 15 kt. Seas 3 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 ft. 

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

...HURRICANE WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS. W of 70W, NW winds 75 to
85 kt. Elsewhere, S winds 70 to 80 kt, diminishing to 50 to
60 kt after midnight. Seas 11 to 16 ft. 
.MON...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, W winds
45 to 55 kt. 25 to 35 kt in the afternoon. Elsewhere, S winds
35 to 45 kt. Seas 8 to 13 ft. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 20 to
30 kt. Seas 7 to 10 ft. 
.TUE...SW winds 15 to 25 kt. Seas 6 to 9 ft. 
.TUE NIGHT...SW winds 10 to 20 kt. Seas 6 to 8 ft. 
.WED...S winds 10 to 20 kt. Seas 5 to 7 ft. 
.WED NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft.
.THU...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.FRI...E winds 10 to 15 kt. Seas 4 ft. 

ATLC waters S of 22N W of 65W

.TONIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON...S winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...SE 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 20 kt. Seas 3 to 5 ft. 
.THU NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. 
.FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. 

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

.TONIGHT...S winds 10 to 20 kt. Seas 4 to 5 ft. 
.MON...S winds 10 to 15 kt. Seas 4 to 5 ft. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 5 ft. 
.TUE...SE winds 10 to 15 kt. Seas 4 ft. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.WED...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.THU...E winds 10 to 15 kt. Seas 5 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 5 ft. 
.FRI...E winds 10 to 15 kt. Seas 5 ft.