000
FZNT31 KNHC 282041
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
441 PM EDT Sat Oct 28 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...Strong high pressure centered over the middle
Atlantic U.S. coast is combining with elongated low pressure
across the Caribbean along 68W-69W and into the adjacent
Atlantic to support fresh to locally strong NE to E winds in the
NW Caribbean. This trough will shift W-NW through early next
week, with winds diminishing across the NW Caribbean on Sun.
Scattered to numerous strong thunderstorms occurring along and E
of the trough will shift westward with the trough through Mon.
Large N-NE swell across the W Atlantic will continue to move
through the NE Caribbean Passages through Sun. A strong cold
front will enter the NW Caribbean Wed afternoon. 

NW Caribbean W of 85W

.TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.SUN...E winds 10 to 15 kt. Seas 5 to 7 ft. 
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON...N winds less than 10 kt. Seas 3 to 5 ft. 
.MON NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. 
.TUE...N winds less than 10 kt. Seas 3 ft. 
.TUE NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. 
.WED...N winds 10 to 20 kt. Seas 4 to 6 ft. 
.WED NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.THU...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.THU NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. 

Caribbean N of 15N between 72W and 85W

.TONIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN...E winds less than 10 kt S of 18N, and NE 10 to 15 kt
elsewhere. Seas 3 to 5 ft. 
.SUN NIGHT...S of 18N, NE winds less than 10 kt in the evening,
becoming variable winds less than 10 kt. Elsewhere, E winds
10 to 15 kt. Seas 3 to 5 ft. 
.MON...SE winds less than 10 kt. Seas 3 to 4 ft. 
.MON NIGHT...Variable winds less than 10 kt. Seas 3 ft in the
evening, subsiding to 2 ft or less. 
.TUE...Variable winds less than 10 kt. Seas 2 ft or less. 
.TUE NIGHT...Variable winds less than 10 kt, becoming N less
than 10 kt after midnight. 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...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.THU...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...NE winds 15 to 25 kt. Seas 5 to 7 ft. 

Caribbean from 11N to 15N W of 72W

.TONIGHT...SW winds 10 to 15 kt within 90 nm of coast of
Colombia, and E less than 10 kt elsewhere. Seas 3 to 5 ft. 
.SUN...SW winds 10 to 20 kt within 90 nm of coast of Colombia,
and SW less than 10 kt elsewhere. Seas 3 to 5 ft. 
.SUN NIGHT...SW winds 10 to 15 kt within 90 nm of coast of
Colombia, and NW less than 10 kt elsewhere. Seas 3 to 5 ft. 
.MON...SW winds 10 to 15 kt within 90 nm of coast of Colombia,
and SW less than 10 kt elsewhere. Seas 3 to 4 ft. 
.MON NIGHT...W winds less than 10 kt. Seas 3 ft. 
.TUE...W winds less than 10 kt. Seas 3 ft. 
.TUE NIGHT...NW winds less than 10 kt. Seas 3 ft. 
.WED...NW winds less than 10 kt. Seas 3 ft. 
.WED NIGHT...N winds less than 10 kt. Seas 3 ft. 
.THU...NW winds less than 10 kt. Seas 3 ft. 
.THU NIGHT...N winds less than 10 kt. Seas 3 ft. 

SW Caribbean S of 11N

.TONIGHT...W winds 10 to 15 kt. Seas 3 to 4 ft. 
.SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. 
.SUN NIGHT...W winds less than 10 kt. Seas 3 to 4 ft.
.MON...SW winds 10 to 15 kt. Seas 3 ft. 
.MON NIGHT...W winds less than 10 kt. Seas 3 ft. 
.TUE...W winds less than 10 kt. Seas 3 ft. 
.TUE NIGHT...NW winds less than 10 kt. Seas 2 ft or less. 
.WED...NW winds less than 10 kt. Seas 3 ft. 
.WED NIGHT...W winds less than 10 kt. Seas 3 ft. 
.THU...W winds less than 10 kt. Seas 3 ft. 
.THU NIGHT...W winds 10 kt. Seas 3 ft. 

Caribbean between 64W and 72W

.TONIGHT...SE winds less than 10 kt. Seas 3 ft Gulf of
Venezuela, and 4 to 6 ft elsewhere. 
.SUN...SE winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 5 ft elsewhere. 
.SUN NIGHT...E winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 5 ft elsewhere. 
.MON...SE winds less than 10 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 5 ft elsewhere. 
.MON NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. 
.TUE...SE winds less than 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. 
.WED...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.WED NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft. 
.THU...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 

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

.TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. 
.SUN...SE winds 10 to 15 kt. Seas 6 to 8 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. 
.MON...E winds 10 to 15 kt. Seas 5 to 7 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. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.WED...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED NIGHT...E winds 10 to 15 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. 

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

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

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Tropical Storm Tammy is near 33.2N 57.0W at 5 PM
EDT, moving east at 13 kt. Maximum sustained winds are 40 kt 
with gusts to 50 kt. Minimum central pressure is 997 mb. Tammy is
expected to move E-SE tonight, while brushing the far NE 
offshore waters, then turn SE and weaken to a non-tropical low 
through Tue. High pressure across the middle Atlantic coastal 
states is combining with a low level trough than extends from S 
of Tammy to 1008 mb low pressure located just N of the Mona 
Passage to produce a large area of fresh to locally strong winds,
with high seas between Tammy and the Bahamas. These high seas 
will slowly subside through Mon. The low pressure is expected to 
move NW and parallel to the Bahamas Sun through Mon, accompanied 
by strong winds and very active weather. A strong cold front will
enter the NW waters Wed morning.

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

.TONIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. 
.SUN...E winds 10 to 20 kt. Seas 6 to 9 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. 
.MON...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.MON NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.TUE...N winds 10 to 15 kt. Seas 6 to 8 ft. 
.TUE NIGHT...N winds 10 to 15 kt. Seas 5 to 6 ft. 
.WED...N winds 15 to 25 kt. Seas 6 to 9 ft. 
.WED NIGHT...N winds 20 to 25 kt. Seas 8 to 11 ft. 
.THU...NE winds 20 to 25 kt. Seas 9 to 12 ft. 
.THU NIGHT...NE winds 15 to 20 kt. Seas 8 to 10 ft. 

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

.TONIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. 
.SUN...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. 
.MON...E winds 10 to 20 kt. Seas 6 to 9 ft. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. 
.TUE...S winds 10 to 15 kt. Seas 5 to 7 ft. 
.TUE NIGHT...SW winds 10 to 15 kt. Seas 5 to 6 ft. 
.WED...W winds 10 to 20 kt. Seas 5 to 7 ft. 
.WED NIGHT...N 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 15 to 25 kt. Seas 8 to 12 ft. 

Bahamas N of 22N

.TONIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.SUN...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.MON...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...NW winds less than 10 kt. Seas 3 to 5 ft.
.TUE NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. 
.WED...N winds 10 to 15 kt. Seas 3 to 4 ft. 
.WED NIGHT...NE winds 15 to 25 kt. Seas 4 to 6 ft. 
.THU...NE winds 15 to 25 kt. Seas 6 to 9 ft. 
.THU NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. 

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

.TONIGHT...NE winds 15 to 25 kt W of 70W, and E 15 to 25 kt
elsewhere. Seas 8 to 12 ft. 
.SUN...NE winds 10 to 20 kt W of 70W, and SE 15 to 25 kt
elsewhere. Seas 8 to 12 ft. 
.SUN NIGHT...E winds 15 to 25 kt W of 70W, and SE 15 to 25 kt
elsewhere. Seas 8 to 12 ft. 
.MON...SE winds 10 to 20 kt. Seas 7 to 10 ft. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. 
.TUE...S winds 10 to 15 kt. Seas 5 to 7 ft. 
.TUE NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED...S winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. 
.THU...E winds 10 to 20 kt. Seas 7 to 10 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. 

ATLC waters S of 22N W of 65W

.TONIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. 
.SUN...SE winds 10 to 15 kt. Seas 6 to 8 ft. 
.SUN NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 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. 
.TUE NIGHT...SE 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 5 ft. 
.THU...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. 

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

.TONIGHT...SE winds 10 to 20 kt. Seas 7 to 10 ft. 
.SUN...SE winds 10 to 15 kt. Seas 6 to 9 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft. 
.MON...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.TUE...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 5 ft. 
.WED...E winds 10 to 15 kt. Seas 5 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.THU...E winds 10 to 15 kt. Seas 5 to 7 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.