000
FZNT31 KNHC 011530
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1130 AM EDT Fri Sep 1 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...Fresh to strong trades will pulse in the central
Caribbean through tonight with moderate seas. Meanwhile, gentle
to moderate winds will prevail in the western Caribbean with
moderate to fresh winds in the eastern Caribbean. Trades will
weaken this weekend as the pressure gradient relaxes and
continue through early next week. 

NW Caribbean W of 85W

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 ft. 
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT NIGHT...NE winds 10 to 15 kt. Seas 3 ft. 
.SUN...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.SUN NIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft. 
.MON...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE...SE winds 10 to 20 kt. Seas 3 ft. 

Caribbean N of 15N between 72W and 85W

.THIS AFTERNOON...E winds 10 to 20 kt. Seas 5 to 7 ft S of 18N,
and 3 to 4 ft elsewhere. 
.TONIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds
20 to 30 kt, becoming NE 10 to 20 kt after midnight. Seas 4 to
6 ft. 
.SAT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.SAT NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.SUN...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 2 ft or less. 
.MON...SE winds 10 to 20 kt. Seas 2 ft or less. 
.MON NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to
3 ft after midnight. 
.TUE...E winds 10 to 15 kt. Seas 3 ft. 

Caribbean from 11N to 15N W of 72W

.THIS AFTERNOON...E winds 15 to 25 kt. Seas 5 to 7 ft. 
.TONIGHT...NE winds 15 to 25 kt within 90 nm of coast of
Colombia, and E 20 to 30 kt elsewhere. Seas 5 to 7 ft. 
.SAT...E winds 15 to 25 kt. Seas 5 to 7 ft. 
.SAT NIGHT...NE winds 15 to 25 kt. Seas 4 to 6 ft. 
.SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...E winds 10 to 15 kt. Seas 3 ft. 
.MON NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE...E winds 10 to 20 kt. Seas 3 ft. 

SW Caribbean S of 11N

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

Caribbean between 64W and 72W

.THIS AFTERNOON...E winds 15 to 25 kt. Seas 3 to 4 ft Gulf of
Venezuela, and 4 to 6 ft elsewhere. 
.TONIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 15 to
25 kt elsewhere. Seas 3 to 5 ft. 
.SAT...Gulf of Venezuela, E winds 20 to 25 kt, shifting to NE
10 to 20 kt in the afternoon. Elsewhere, E winds 10 to 20 kt.
Seas 3 to 5 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.SUN...Gulf of Venezuela, E winds 10 to 20 kt, becoming NE less
than 10 kt in the afternoon,Seas 3 ft in the morning, subsiding
to 2 ft or less. Elsewhere, E winds 10 to 20 kt,Seas 3 to 5 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 4 to 6 ft elsewhere. 
.MON...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela,
and 4 to 6 ft elsewhere. 
.MON NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 4 to 6 ft elsewhere. 
.TUE...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela,
and 4 to 6 ft elsewhere. 

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

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.TONIGHT...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 5 ft. 
.SUN...SE winds 10 to 15 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. 
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...E winds 10 to 15 kt. Seas 4 to 6 ft. 

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

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.SUN...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.MON...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Post-Tropical Cyclone Idalia is near 31.9N 67.9W at 
11 AM EDT, and is moving east-southeast at 15 kt. Maximum 
sustained winds are 50 kt with gusts to 60 kt, and the minimum 
central pressure is 998 mb. Idalia will move to 31.3N 66.3W this
evening, and become tropical near 30.9N 64.9W Sat morning, and
move N of area near 31.1N 63.7W Sat evening. Gale force winds 
and rough to very rough seas associated with the southern 
periphery of Idalia will impact the north waters through the 
weekend. Tropical Depression Gert is near 28.7N 54.6W at 11 AM
EDT, and is moving east at 6 kt. Maximum sustained winds are
30 kt with gusts to 40 kt, and the minimum central pressure is
1008 mb. Gert will strengthen to a tropical storm near 28.8N
53.6W this evening, and move to 28.9N 52.9W Sat morning. Then,
Gert will continue to move away for the offshore forecast waters
the remainder of the weekend. Strong winds and moderate seas
will impact the outer forecast waters due to Gert the rest of 
the day.

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

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.TONIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. 
.SAT...NE winds 10 to 15 kt. Seas 6 to 8 ft. 
.SAT NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.SUN...NE winds 10 to 15 kt. Seas 6 to 8 ft. 
.SUN NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.MON...NE winds less than 10 kt. Seas 5 to 6 ft. 
.MON NIGHT...E winds less than 10 kt. Seas 4 to 6 ft.
.TUE...NE winds less than 10 kt. Seas 4 to 5 ft. 

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

...GALE WARNING...
...TROPICAL STORM WARNING...

.THIS AFTERNOON...N winds 30 to 40 kt W of 70W, and W 35 to 45 
kt elsewhere. Seas 10 to 15 ft. 
.TONIGHT...N winds 20 to 30 kt W of 70W, and W 30 to 40 kt 
elsewhere. Seas 10 to 15 ft W of 70W, and 12 to 17 ft elsewhere. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 20 to 30 kt
W of 70W, and NW 30 to 40 kt elsewhere. Seas 8 to 13 ft W of
70W, and 11 to 16 ft elsewhere. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 15 to
25 kt W of 70W, and NW 25 to 35 kt elsewhere. Seas 8 to 12 ft W
of 70W, and 10 to 15 ft elsewhere. 
.SUN...NE winds 10 to 20 kt W of 70W, and N 20 to 30 kt
elsewhere. Seas 8 to 12 ft. 
.SUN NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. 
.MON...NE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 6 to 8 ft. 
.MON NIGHT...NE winds less than 10 kt. Seas 5 to 7 ft. 
.TUE...N winds less than 10 kt. Seas 5 to 6 ft. 

Bahamas N of 22N

.THIS AFTERNOON...NE winds less than 10 kt. Seas 2 ft or less. 
.TONIGHT...NE winds 10 to 15 kt. Seas 2 ft or less, building to
3 ft after midnight. 
.SAT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.SAT NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.SUN...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt
after midnight. Seas 3 to 4 ft. 
.TUE...E winds less than 10 kt. Seas 3 ft. 

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

.THIS AFTERNOON...SW winds 10 to 20 kt. Seas 4 to 6 ft. 
.TONIGHT...NW winds 10 to 20 kt. Seas 6 to 9 ft. 
.SAT...NW winds 10 to 20 kt. Seas 7 to 10 ft. 
.SAT NIGHT...NW winds 10 to 20 kt. Seas 7 to 10 ft. 
.SUN...NW winds 10 to 15 kt. Seas 7 to 9 ft. 
.SUN NIGHT...N winds 10 to 15 kt. Seas 6 to 8 ft. 
.MON...NE winds less than 10 kt W of 70W, and W 10 to 15 kt
elsewhere. Seas 6 to 7 ft. 
.MON NIGHT...NE winds less than 10 kt W of 70W, and NW 10 to
15 kt elsewhere. Seas 5 to 7 ft. 
.TUE...NE winds less than 10 kt. Seas 5 to 6 ft. 

ATLC waters S of 22N W of 65W

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT...E winds 10 to 15 kt, shifting to SE in the afternoon.
Seas 3 to 5 ft. 
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.SUN...SE winds less than 10 kt, increasing to 10 to 15 kt in
the afternoon. Seas 4 to 6 ft. 
.SUN NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

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

.THIS AFTERNOON...SE winds less than 10 kt. Seas 4 ft. 
.TONIGHT...SE winds less than 10 kt. Seas 4 to 5 ft.
.SAT...S winds less than 10 kt. Seas 4 to 5 ft. 
.SAT NIGHT...S winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 5 to 7 ft. 
.SUN...S winds less than 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 5 to 7 ft. 
.SUN NIGHT...S winds less than 10 kt. Seas 6 ft. 
.MON...S winds less than 10 kt. Seas 5 to 6 ft. 
.MON NIGHT...S winds less than 10 kt. Seas 5 to 6 ft. 
.TUE...S winds less than 10 kt. Seas 5 to 6 ft.