000
FZNT31 KNHC 222046
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
446 PM EDT Sun Oct 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...Hurricane Tammy is about 105 nm N of Anguilla
Island, near 19.9N 63.4W at 5 PM EDT, and is moving northwest at
8 kt. Maximum sustained winds are 75 kt with gusts to 90 kt, and
the minimum central pressure is 988 mb. Tammy will move to 20.9N
63.8W Mon morning,, then continue to move north of the region
through mid week. Meanwhile, showers and thunderstorms continue
to become better organized in association with a low pressure
system located over the southwestern Caribbean Sea around 60 nm
of Providencia Island. Gradual development of this system is
possible, and a tropical depression could form before the system
moves inland over Nicaragua by early Tue. 

NW Caribbean W of 85W

.TONIGHT...NE winds 10 to 15 kt. Seas 3 ft. 
.MON...NE winds 10 to 15 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 3 to 5 ft. 
.TUE NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft. 
.WED...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.WED NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.THU...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. 
.FRI...E winds 10 to 20 kt. Seas 6 to 8 ft. 

Caribbean N of 15N between 72W and 85W

.TONIGHT...E winds 10 to 20 kt. Seas 3 ft. 
.MON...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.MON NIGHT...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 3 to 5 ft. 
.TUE...E winds 10 to 20 kt. S of 18N, seas 2 ft or less,
building to 3 ft in the afternoon. Elsewhere, seas 3 to 5 ft. 
.TUE NIGHT...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 3 to 5 ft. 
.WED...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 3 to 4 ft S of 18N, and 5 to 7 ft elsewhere. 
.WED NIGHT...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 4 to 6 ft. 
.THU...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 4 to 6 ft. 
.THU NIGHT...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 4 to 6 ft. 
.FRI...NE winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 4 to 6 ft. 

Caribbean from 11N to 15N W of 72W

.TONIGHT...NE winds less than 10 kt within 90 nm of coast of
Colombia, and E 15 to 25 kt elsewhere. Seas 3 to 4 ft. 
.MON...E winds 10 kt within 90 nm of coast of Colombia, and E
20 to 30 kt elsewhere. Within 90 nm of coast of Colombia, seas
3 ft in the morning, subsiding to 2 ft or less. Elsewhere, seas
3 to 5 ft. 
.MON NIGHT...NE winds 10 kt within 90 nm of coast of Colombia,
and E 20 to 30 kt elsewhere. Seas 2 ft or less within 90 nm of
coast of Colombia, and 3 to 5 ft elsewhere. 
.TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE NIGHT...E winds 10 to 15 kt, shifting to NE after midnight.
Seas 3 ft in the evening, subsiding to 2 ft or less. 
.WED...E winds less than 10 kt within 90 nm of coast of
Colombia, and NE 10 to 15 kt elsewhere. Seas 2 ft or less. 
.WED NIGHT...SE winds less than 10 kt within 90 nm of coast of
Colombia, and NE 10 to 15 kt elsewhere. Seas 2 ft or less. 
.THU...S winds less than 10 kt within 90 nm of coast of
Colombia, and NE 10 to 15 kt elsewhere. Seas 2 ft or less,
building to 3 ft in the afternoon. 
.THU NIGHT...Within 90 nm of coast of Colombia, SE winds less
than 10 kt in the evening, becoming variable winds less than
10 kt. Elsewhere, NE winds 10 to 15 kt. Seas 3 ft. 
.FRI...Within 90 nm of coast of Colombia, S winds less than
10 kt, shifting to SW in the afternoon. Elsewhere, NE winds
10 to 20 kt. Seas 3 to 4 ft. 

SW Caribbean S of 11N

.TONIGHT...SW winds 10 to 20 kt. Seas 3 ft. 
.MON...S winds 10 to 20 kt. Seas 2 ft or less, building to 3 ft
in the afternoon. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less. 
.TUE...SE winds 10 to 15 kt, shifting to S in the afternoon.
Seas 2 ft or less. 
.TUE NIGHT...NW winds less than 10 kt. Seas 2 ft or less. 
.WED...W winds less than 10 kt. Seas 2 ft or less. 
.WED NIGHT...W winds less than 10 kt. Seas 2 ft or less. 
.THU...W winds less than 10 kt. Seas 2 ft or less. 
.THU NIGHT...W winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less. 
.FRI...W winds 10 to 20 kt. Seas 2 ft or less, building to 3 ft
in the afternoon. 

Caribbean between 64W and 72W

.TONIGHT...E winds 10 to 15 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 4 ft elsewhere. 
.MON...Gulf of Venezuela, E winds 10 kt in the morning, becoming
variable winds less than 10 kt. Elsewhere, SE winds 10 to 15 kt.
Seas 2 ft or less Gulf of Venezuela, and 3 ft elsewhere. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less. 
.TUE...NE winds less than 10 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. Seas 2 ft or less. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 2 ft or less, building
to 3 ft after midnight. 
.WED...NE winds less than 10 kt Gulf of Venezuela, and NE 10 to
20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to
4 ft elsewhere. 
.WED NIGHT...E winds less than 10 kt Gulf of Venezuela, and NE
10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and
3 to 4 ft elsewhere. 
.THU...Gulf of Venezuela, E winds less than 10 kt in the
morning, becoming variable winds less than 10 kt. Elsewhere, E
winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to
5 ft elsewhere. 
.THU NIGHT...E 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 4 ft elsewhere. 
.FRI...Gulf of Venezuela, Variable winds less than 10 kt,
becoming W less than 10 kt in the afternoon. Elsewhere, E winds
10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 4 ft
elsewhere. 

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

...TROPICAL STORM WARNING...

.TONIGHT...SE winds 20 to 30 kt. Seas 5 to 7 ft. 
.MON...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE NIGHT...SE winds 10 to 15 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 5 ft. 
.THU...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.THU NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. 
.FRI...SE winds 10 to 15 kt. Seas 5 to 7 ft. 

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

.TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE...E winds 10 to 15 kt, shifting to SE in the afternoon.
Seas 3 to 5 ft. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 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...E winds 10 to 15 kt. Seas 4 to 6 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Hurricane Tammy is near 19.9N 63.4W at 5 PM EDT, and
is moving northwest at 8 kt. Maximum sustained winds are 75 kt
with gusts to 90 kt, and the minimum central pressure is 988 mb.
Tammy will move to 20.9N 63.8W Mon morning, 22.0N 63.6W Mon
afternoon, 22.8N 62.9W Tue morning, 23.6N 62.0W Tue afternoon,
24.4N 61.0W Wed morning, and 25.8N 60.2W Wed afternoon. Tammy
will weaken as an extratropical cyclone over 28.9N 60.4W Thu
afternoon. Farther west, a stationary front stretches from
31N61W to central Cuba. A second cold front will move off
Florida tonight, then dissipate as it moves eastward across the
northern portions of the waters early this week. Looking ahead,
high pressure building in the wake of the front combined with
the impacts of Hurricane Tammy will bring an increase in winds
and seas across the forecast area Mon night through Fri. 

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

.TONIGHT...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 25 kt. Seas 5 to 7 ft. 
.TUE NIGHT...E winds 20 to 30 kt. Seas 6 to 8 ft. 
.WED...E winds 20 to 30 kt. Seas 7 to 9 ft. 
.WED NIGHT...E winds 20 to 30 kt. Seas 7 to 9 ft. 
.THU...E winds 20 to 30 kt. Seas 8 to 9 ft. 
.THU NIGHT...E winds 20 to 30 kt. Seas 7 to 9 ft. 
.FRI...NE winds 15 to 25 kt. Seas 7 to 9 ft. 

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

.TONIGHT...W winds 10 to 15 kt. Seas 6 to 8 ft. 
.MON...N winds 10 to 15 kt. Seas 5 to 7 ft. 
.MON NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.TUE...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.TUE NIGHT...NE winds 20 to 30 kt. Seas 7 to 10 ft. 
.WED...NE winds 20 to 30 kt. Seas 8 to 12 ft. 
.WED NIGHT...NE winds 20 to 30 kt. Seas 8 to 11 ft W of 70W, and
10 to 15 ft elsewhere. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. 
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI...NE winds 20 to 30 kt W of 70W, and N 35 to 45 kt
elsewhere. W of 70W, seas 10 to 15 ft. Elsewhere, seas 17 to
22 ft, building to 15 to 25 ft in the afternoon. 

Bahamas N of 22N

.TONIGHT...NE winds 10 to 15 kt. Seas 3 ft. 
.MON...NE winds 10 to 20 kt. Seas 3 ft. 
.MON NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE...NE winds 10 to 20 kt, increasing to 20 to 30 kt in the
afternoon. Seas 4 to 6 ft. 
.TUE NIGHT...NE winds 20 to 30 kt. Seas 4 to 6 ft. 
.WED...NE winds 20 to 30 kt. Seas 5 to 7 ft. 
.WED NIGHT...NE winds 20 to 30 kt. Seas 5 to 7 ft. 
.THU...NE winds 20 to 30 kt. Seas 5 to 7 ft. 
.THU NIGHT...NE winds 15 to 25 kt. Seas 5 to 7 ft. 
.FRI...NE winds 15 to 25 kt. Seas 5 to 7 ft. 

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

.TONIGHT...NE winds 10 to 15 kt W of 70W, and E 15 to 25 kt
elsewhere. Seas 5 to 6 ft W of 70W, and 7 to 10 ft elsewhere. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to 20 kt
W of 70W, and NE 15 to 25 kt elsewhere. Seas 4 to 6 ft W of 70W,
and 8 to 11 ft elsewhere. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to
20 kt W of 70W, and NE 15 to 25 kt elsewhere. Seas 5 to 7 ft W
of 70W, and 8 to 11 ft elsewhere. 
.TUE...NE winds 20 to 30 kt W of 70W, and NE 15 to 25 kt
elsewhere. Seas 6 to 9 ft W of 70W, and 8 to 11 ft elsewhere. 
.TUE NIGHT...NE winds 20 to 30 kt. Seas 8 to 10 ft W of 70W, and
9 to 12 ft elsewhere. 
.WED...NE winds 20 to 30 kt W of 70W, and NE 15 to 25 kt
elsewhere. Seas 9 to 11 ft W of 70W, and 10 to 13 ft elsewhere. 
.WED NIGHT...NE winds 20 to 30 kt W of 70W, and NE 15 to 25 kt
elsewhere. Seas 10 to 12 ft W of 70W, and 11 to 14 ft elsewhere.
.THU...NE winds 20 to 30 kt. Seas 11 to 14 ft. 
.THU NIGHT...NE winds 15 to 25 kt. Seas 11 to 15 ft. 
.FRI...NE winds 15 to 25 kt W of 70W, and NE 10 to 20 kt
elsewhere. Seas 10 to 13 ft W of 70W, and 11 to 16 ft elsewhere.
 

ATLC waters S of 22N W of 65W

.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 15 to
25 kt. Seas 6 to 9 ft. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 15 to
25 kt. Seas 6 to 9 ft. 
.MON NIGHT...NE winds 15 to 25 kt. Seas 6 to 8 ft. 
.TUE...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.TUE NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.WED...NE winds 15 to 25 kt. Seas 7 to 10 ft. 
.WED NIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. 
.THU...NE winds 15 to 25 kt. Seas 7 to 10 ft. 
.THU NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. 
.FRI...NE winds 10 to 20 kt. Seas 7 to 10 ft. 

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

...HURRICANE WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS. SE winds 60 to 70 kt.
Seas 11 to 16 ft. 
.MON...TROPICAL STORM CONDITIONS EXPECTED. SE winds 55 to
70 kt. Seas 9 to 14 ft. 
.MON NIGHT...TROPICAL STORM CONDITIONS EXPECTED. S winds 40 to
50 kt, diminishing to 25 to 35 kt after midnight. Seas 8 to
11 ft. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. S winds 20 to 30 kt.
Seas 6 to 9 ft. 
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S winds 15 to
25 kt. Seas 6 to 8 ft. 
.WED...S winds 10 to 20 kt. Seas 6 to 9 ft. 
.WED NIGHT...SE winds 10 to 20 kt. Seas 7 to 10 ft. 
.THU...SE winds 10 to 15 kt. Seas 8 to 11 ft. 
.THU NIGHT...SE winds 10 to 15 kt. Seas 8 to 11 ft. 
.FRI...SE winds 10 to 15 kt. Seas 7 to 10 ft.