000
FZNT31 KNHC 211526
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1126 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 16.0N 60.7W at 11 AM EDT,
and is moving northwest at 7 kt. Maximum sustained winds are
75 kt with gusts to 90 kt, and the minimum central pressure is
988 mb. Tammy will move to 17.0N 61.6W this evening, 18.6N 62.5W
Sun morning, 20.0N 63.3W Sun evening, 21.3N 63.8W Mon morning,
22.3N 63.8W Mon evening, and 23.2N 63.5W Tue morning. Tammy will
change little in intensity as it moves to near 24.9N 62.7W and
farther N of the Leeward Islands early Wed. An area of low
pressure is over the far southwestern Caribbean. Some slow
development of this system is possible during the next few days
while it moves slowly westward over the southwestern Caribbean
Sea. The disturbance is forecast to move inland over Central
America Monday or early Tuesday, and no further development is
expected after that time. A weak cold front will move into the
northwest Caribbean by late Mon. 

NW Caribbean W of 85W

.THIS AFTERNOON...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 2 ft or less. 
.MON...E winds 10 to 20 kt. Seas 2 ft or less, building to 3 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...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.WED...E winds 10 to 20 kt. Seas 4 to 6 ft. 

Caribbean N of 15N between 72W and 85W

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas 2 ft or less. 
.TONIGHT...NE winds 10 to 20 kt. Seas 2 ft or less. 
.SUN...NE winds 10 to 20 kt. Seas 2 ft or less. 
.SUN NIGHT...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 2 ft or less. 
.MON...E winds 10 to 20 kt. Seas 2 ft or less. 
.MON NIGHT...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 2 ft or less S of 18N, and 3 to 5 ft elsewhere. 
.TUE...E winds 10 to 15 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 2 ft or less S of 18N, and 3 to 5 ft elsewhere. 
.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 4 to 6 ft elsewhere. 

Caribbean from 11N to 15N W of 72W

.THIS AFTERNOON...Within 90 nm of coast of Colombia, SW winds
less than 10 kt, increasing to 10 to 15 kt in the afternoon.
Elsewhere, SE winds 10 to 20 kt. Seas 3 ft. 
.TONIGHT...N winds 10 to 20 kt. Seas 3 ft. 
.SUN...Within 90 nm of coast of Colombia, Variable winds less
than 10 kt, becoming E less than 10 kt in the afternoon.
Elsewhere, E winds 10 to 20 kt. Seas 3 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 3 ft. 
.MON...E winds 10 to 20 kt. Seas 3 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. 
.TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 2 ft or less. 
.TUE NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. 
.WED...NE winds 10 to 15 kt. Seas 2 ft or less. 

SW Caribbean S of 11N

.THIS AFTERNOON...SW winds 10 to 20 kt. Seas 3 ft. 
.TONIGHT...SW winds 10 to 20 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less. 
.SUN...S winds 10 to 20 kt. Seas 2 ft or less. 
.SUN NIGHT...SW winds 10 to 15 kt. Seas 2 ft or less. 
.MON...SE winds 10 to 15 kt. Seas 2 ft or less. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less. 
.TUE...NE 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

.THIS AFTERNOON...W winds less than 10 kt Gulf of Venezuela, and
E 10 to 15 kt elsewhere. Seas 2 ft or less Gulf of Venezuela,
and 3 to 5 ft elsewhere. 
.TONIGHT...NE winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 5 ft elsewhere. 
.SUN...Gulf of Venezuela, N winds less than 10 kt, shifting to
SW in the afternoon. Elsewhere, E winds 10 to 15 kt. Seas 2 ft
or less Gulf of Venezuela, and 3 to 4 ft elsewhere. 
.SUN NIGHT...Gulf of Venezuela, Variable winds less than 10 kt,
becoming NE less than 10 kt after midnight. Elsewhere, E winds
10 to 15 kt, diminishing to less than 10 kt after midnight. Seas
2 ft or less Gulf of Venezuela, and 3 to 4 ft elsewhere. 
.MON...Gulf of Venezuela, E winds less than 10 kt in the
morning, becoming variable winds less than 10 kt. Elsewhere, SE
winds less than 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 ft or less Gulf of Venezuela, and 3 ft
elsewhere. 
.MON NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 ft elsewhere. 
.TUE...E winds 10 to 15 kt. Gulf of Venezuela, seas 2 ft or
less. Elsewhere, seas 3 ft in the morning, subsiding to 2 ft or
less. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 2 ft or less. 
.WED...NE winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 ft elsewhere. 

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

...HURRICANE WARNING...

.THIS AFTERNOON...TROPICAL STORM CONDITIONS. SE winds 60 to
70 kt. Seas 10 to 15 ft. 
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 60 to
70 kt. Seas 9 to 14 ft. 
.SUN...TROPICAL STORM CONDITIONS EXPECTED. SE winds 65 to
75 kt. Seas 7 to 10 ft. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 20 to
30 kt, diminishing to 10 to 20 kt after midnight. 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 20 kt. Seas 4 to 6 ft. 
.TUE...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED...E winds less than 10 kt, shifting to SE in the afternoon.
Seas 3 to 5 ft. 

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

...TROPICAL STORM WARNING...

.THIS AFTERNOON...TROPICAL STORM CONDITIONS POSSIBLE. SE winds
15 to 25 kt. Seas 4 to 6 ft. 
.TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.WED...E winds 10 to 15 kt. Seas 3 to 4 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Hurricane Tammy is near 16.0N 60.7W at 11 AM EDT,
and is moving northwest at 7 kt. Maximum sustained winds are 75 
kt with gusts to 90 kt, and the minimum central pressure is 988 
mb. Tammy will move to 17.0N 61.6W this evening, 18.6N 62.5W Sun 
morning, 20.0N 63.3W Sun evening, 21.3N 63.8W Mon morning, 22.3N 
63.8W Mon evening, and 23.2N 63.5W Tue morning. Tammy will change
little in intensity as it moves to near early Wed. Farther W, a 
cold front extends from 31N73W to northern Florida. 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

.THIS AFTERNOON...NW winds 15 to 25 kt. Seas 6 to 9 ft. 
.TONIGHT...NW winds 10 to 15 kt. Seas 5 to 7 ft. 
.SUN...W winds 10 to 20 kt. Seas 3 to 5 ft. 
.SUN NIGHT...N winds 10 to 20 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 20 kt. Seas 6 to 8 ft. 
.TUE NIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft. 
.WED...E winds 15 to 25 kt. Seas 7 to 8 ft. 

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

.THIS AFTERNOON...W winds 20 to 30 kt W of 70W, and SW 15 to
25 kt elsewhere. Seas 7 to 10 ft. 
.TONIGHT...W winds 15 to 25 kt. Seas 8 to 11 ft. 
.SUN...W winds 10 to 20 kt. Seas 6 to 9 ft. 
.SUN NIGHT...NW winds 10 to 15 kt. Seas 6 to 8 ft. 
.MON...N winds 10 to 20 kt. Seas 6 to 8 ft. 
.MON NIGHT...NE winds 15 to 25 kt. Seas 6 to 8 ft. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.WED...TROPICAL STORM CONDITIONS POSSIBLE. 

Bahamas N of 22N

.THIS AFTERNOON...NW winds 10 to 15 kt. Seas 2 ft or less. 
.TONIGHT...NE winds 10 to 15 kt. Seas 2 ft or less, building to
3 ft after midnight. 
.SUN...NE winds 10 to 15 kt. Seas 3 ft. 
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less. 
.MON...NE winds 10 to 20 kt. Seas 2 ft or less. 
.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

.THIS AFTERNOON...SW winds 10 to 20 kt. Seas 4 to 6 ft W of 70W,
and 6 to 8 ft elsewhere. 
.TONIGHT...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...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...HURRICANE 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. 
.MON NIGHT...HURRICANE 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

.THIS AFTERNOON...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. E winds 10 to 15 kt.
Seas 4 to 6 ft. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 10 to
20 kt. Seas 6 to 8 ft. 
.MON...HURRICANE CONDITIONS POSSIBLE. NE winds 10 to 20 kt.
Seas 6 to 8 ft. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.WED...NE winds 15 to 25 kt. Seas 6 to 9 ft. 

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

...HURRICANE WARNING...

.THIS AFTERNOON...SE winds 15 to 25 kt. Seas 8 to 11 ft. 
.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 25 to
35 kt. Seas 8 to 13 ft. 
.SUN...TROPICAL STORM CONDITIONS EXPECTED. E winds 45 to 55 kt,
becoming SE 65 to 75 kt in the afternoon. Seas 10 to 15 ft. 
.SUN NIGHT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 65 to
75 kt. Seas 11 to 16 ft. 
.MON...HURRICANE CONDITIONS POSSIBLE. SE winds 65 to 75 kt.
Seas 9 to 14 ft. 
.MON NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. 
.TUE NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.WED...TROPICAL STORM CONDITIONS POSSIBLE.