000
FZNT31 KNHC 210906
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
506 AM EDT Sat Oct 21 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 near 15.2N 60.4W at 5 AM EDT, and
is moving northwest at 8 kt. Maximum sustained winds are 70 kt
with gusts to 85 kt, and the minimum central pressure is 991 mb.
Tammy will move to 16.3N 61.3W this afternoon, 17.8N 62.4W Sun
morning, and 19.3N 63.3W Sun afternoon. Hurricane Tammy will
reach 20.6N 64.0W Mon morning, 21.9N 64.2W Mon afternoon, and
22.8N 64.0W Tue morning. Tammy will change little in intensity
as it moves farther N of the Leeward Islands early Wed.
Elsewhere, a trough over the NW Caribbean will dissipate today.
A weak cold front will move into the northwest Caribbean by late
Mon. 

NW Caribbean W of 85W

.TODAY...N winds 10 to 15 kt. Seas 3 to 4 ft. 
.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.SUN...NE winds 10 to 15 kt. Seas 3 ft. 
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 ft. 
.MON...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...E winds 10 to 20 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. 

Caribbean N of 15N between 72W and 85W

.TODAY...NE winds 10 to 15 kt. Seas 2 ft or less. 
.TONIGHT...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...S of 18N, E winds 10 to 15 kt, diminishing to less
than 10 kt after midnight. Elsewhere, NE winds 10 to 20 kt. Seas
2 ft or less. 
.MON...E winds 10 to 20 kt. Seas 2 ft or less, building to 3 to
4 ft in the afternoon. 
.MON NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.TUE...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE NIGHT...NE winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 3 to 5 ft. 
.WED...NE winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 3 to 5 ft. 

Caribbean from 11N to 15N W of 72W

.TODAY...SW winds less than 10 kt within 90 nm of coast of
Colombia, and E 10 to 15 kt elsewhere. Seas 3 ft. 
.TONIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt
after midnight. Seas 3 ft. 
.SUN...Variable 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...E winds less than 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 3 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 ft. 
.TUE...E winds less than 10 kt. Seas 2 ft or less. 
.TUE NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. 
.WED...NE winds less than 10 kt. Seas 2 ft or less. 

SW Caribbean S of 11N

.TODAY...SW winds 10 to 15 kt. Seas 3 ft. 
.TONIGHT...W winds 10 to 15 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less. 
.SUN...SW winds less than 10 kt, shifting to S in the afternoon.
Seas 2 ft or less. 
.SUN NIGHT...S winds less than 10 kt. Seas 2 ft or less. 
.MON...SE winds less than 10 kt. Seas 2 ft or less.
.MON NIGHT...SE winds less than 10 kt. Seas 2 ft or less. 
.TUE...SE winds less than 10 kt. Seas 2 ft or less. 
.TUE NIGHT...N winds less than 10 kt. Seas 2 ft or less. 
.WED...W winds less than 10 kt. Seas 2 ft or less. 

Caribbean between 64W and 72W

.TODAY...SE winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 5 ft elsewhere. 
.TONIGHT...NE winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 4 ft elsewhere. 
.SUN...Gulf of Venezuela, N winds less than 10 kt in the
morning, becoming variable winds less than 10 kt. Elsewhere, E
winds 10 to 15 kt, shifting to S in the afternoon. Seas 2 ft or
less Gulf of Venezuela, and 3 to 4 ft elsewhere. 
.SUN NIGHT...E winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 ft elsewhere. 
.MON...SE winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 ft elsewhere. 
.MON NIGHT...E 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. 
.TUE...E 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. 
.TUE NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less, building
to 3 ft after midnight. 
.WED...NE winds less than 10 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. Seas 3 ft. 

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

...HURRICANE WARNING...

.TODAY...TROPICAL STORM CONDITIONS. E winds 60 to 70 kt. Seas
9 to 14 ft. 
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 60 to
70 kt. Seas 8 to 13 ft. 
.SUN...TROPICAL STORM CONDITIONS EXPECTED. SE winds 55 to
70 kt. Seas 6 to 9 ft. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 25 to
35 kt. Seas 5 to 7 ft. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. 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 4 to 6 ft. 
.TUE NIGHT...SE winds less than 10 kt, shifting to E after
midnight. Seas 4 to 6 ft. 
.WED...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

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

...HURRICANE WARNING...

.TODAY...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 50 to
60 kt, diminishing to 15 to 25 kt in the afternoon. Seas 5 to
7 ft. 
.TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON...E winds 10 to 15 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 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. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Hurricane Tammy is near 15.2N 60.4W at 5 AM EDT, and
is moving northwest at 8 kt. Maximum sustained winds are 70 kt 
with gusts to 85 kt, and the minimum central pressure is 991 mb.
Tammy will move to 16.3N 61.3W this afternoon, 17.8N 62.4W Sun 
morning, and 19.3N 63.3W Sun afternoon. Hurricane Tammy will
reach 20.6N 64.0W Mon morning, 21.9N 64.2W Mon afternoon, and
22.8N 64.0W Tue morning. Tammy will change little in intensity
as it moves farther N of the Leeward Islands early Wed. Farther
W, a cold front will move off the NE Florida coast today and
bring strong W winds with it N of 28N. This front will weaken
and stall E of Bermuda early next week. A second cold front will
follow, moving off the northeast Florida coast late Sun, reach 
from Bermuda to Fort Lauderdale, Florida, by early Mon. 

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

.TODAY...W winds 20 to 30 kt. Seas 6 to 9 ft. 
.TONIGHT...NW winds 10 to 15 kt. Seas 5 to 7 ft. 
.SUN...W winds 10 to 15 kt. Seas 3 to 5 ft. 
.SUN NIGHT...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 15 to 25 kt. Seas 6 to 8 ft. 
.WED...E winds 15 to 20 kt. Seas 7 to 8 ft. 

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

.TODAY...W winds 20 to 30 kt. Seas 7 to 10 ft. 
.TONIGHT...W winds 15 to 25 kt. Seas 8 to 11 ft. 
.SUN...W winds 10 to 15 kt. Seas 6 to 9 ft. 
.SUN NIGHT...NW 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 7 to 9 ft. 
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.WED...TROPICAL STORM CONDITIONS POSSIBLE. 

Bahamas N of 22N

.TODAY...NW winds 10 to 20 kt. Seas 2 ft or less, building to
3 ft in the afternoon. 
.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.SUN...NE winds 10 to 15 kt. Seas 3 ft. 
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...NE winds 10 to 15 kt. Seas 3 ft. 
.MON NIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft. 
.TUE...NE winds 15 to 25 kt. Seas 3 to 5 ft. 
.TUE NIGHT...NE winds 15 to 25 kt. Seas 4 to 6 ft. 
.WED...NE winds 15 to 25 kt. Seas 4 to 6 ft. 

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

.TODAY...SW winds 10 to 20 kt. Seas 4 to 6 ft W of 70W, and 7 to
8 ft elsewhere. 
.TONIGHT...W of 70W, N winds 10 to 15 kt. Elsewhere, S winds
10 to 15 kt, shifting to E after midnight. Seas 6 to 8 ft. 
.SUN...NE winds 10 to 15 kt. Seas 6 to 8 ft. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to
20 kt. Seas 5 to 7 ft W of 70W, and 7 to 10 ft elsewhere. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to 15 kt
W of 70W, and NE 25 to 35 kt elsewhere. Seas 5 to 7 ft W of 70W,
and 8 to 11 ft elsewhere. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.WED...TROPICAL STORM CONDITIONS POSSIBLE. 

ATLC waters S of 22N W of 65W

.TODAY...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to
15 kt. Seas 5 to 7 ft. 
.SUN NIGHT...HURRICANE CONDITIONS POSSIBLE. NE winds 20 to
30 kt. Seas 5 to 7 ft. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. N winds 10 to 20 kt.
Seas 5 to 7 ft. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.WED...NE winds 10 to 20 kt. Seas 6 to 9 ft. 

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

...HURRICANE WARNING...

.TODAY...SE winds 15 to 25 kt. Seas 8 to 11 ft. 
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 25 to
35 kt. Seas 8 to 13 ft. 
.SUN...TROPICAL STORM CONDITIONS EXPECTED. E winds 40 to 50 kt,
becoming SE 60 to 70 kt in the afternoon. Seas 10 to 15 ft. 
.SUN NIGHT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 60 to
75 kt. Seas 10 to 15 ft. 
.MON...HURRICANE CONDITIONS POSSIBLE. SE winds 55 to 70 kt.
Seas 8 to 13 ft. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.WED...SE winds 10 to 15 kt. Seas 5 to 7 ft.