599
FZNT31 KNHC 070855
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
455 AM EDT Tue Oct 7 2025

Marine Weather HF Voice Broadcast for the Tropical N Atlantic
from 07N to 19N W of 55W, the N Atlantic from 19N to
31N W of 55W including the 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 W of 55W

.SYNOPSIS...Rough seas in N to NE swell over the tropical
Atlantic waters and through the Caribbean Passages will continue
to gradually subside through late Tue. Elsewhere, moderate trade
winds will persist across the south-central Caribbean. Moderate
E to SE winds will pulse to fresh in the Gulf of Honduras
through Tue night. Showers and thunderstorms will remain active
across the northwestern Caribbean through Wed. The area of low
pressure, AL95, located over the tropical central Atlantic is
becoming better defined. The associated shower and thunderstorm
activity is showing signs of organization, and environmental
conditions appear favorable for continued development of this
system. A tropical depression or storm is likely to form in the
next day or so while it moves quickly west-northwestward across
the central tropical Atlantic, and a Gale Warning has been
issued in anticipation of this. This system is expected to be
near or north of the northern Leeward Islands on Thursday and
Friday, and interests there should continue to monitor its
progress. Regardless of development, expect an increase in winds
and seas across the tropical Atlantic waters with this system by
the end of the week.

NW Caribbean W of 85W

.TODAY...E winds 10 to 20 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.WED...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft.
.WED NIGHT...E winds less than 10 kt. Seas 3 ft.
.THU...Variable winds less than 10 kt. Seas 3 ft.
.THU NIGHT...Variable winds less than 10 kt. Seas 3 ft.
.FRI...Variable winds less than 10 kt. Seas 3 ft.
.FRI NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.SAT...W winds less than 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...NW winds less than 10 kt. Seas 3 to 5 ft.

Caribbean N of 15N between 72W and 85W

.TODAY...E winds less than 10 kt. Seas 3 to 4 ft.
.TONIGHT...E winds less than 10 kt. Seas 3 ft.
.WED...E winds less than 10 kt. Seas 3 ft.
.WED NIGHT...E winds less than 10 kt S of 18N, and Variable less
than 10 kt elsewhere. Seas 2 ft or less.
.THU...E winds less than 10 kt. Seas 2 ft or less.
.THU NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.FRI...SE winds less than 10 kt. Seas 2 ft or less.
.FRI NIGHT...SE winds less than 10 kt. Seas 2 ft or less.
.SAT...S winds less than 10 kt. Seas 3 ft.
.SAT NIGHT...SW winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 3 ft.

Caribbean from 11N to 15N W of 72W

.TODAY...Within 90 nm of coast of Colombia, E winds 10 to 15 kt.
Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt
in the afternoon. Seas 3 to 5 ft.
.TONIGHT...NE winds 10 to 15 kt within 90 nm of coast of
Colombia, and NE less than 10 kt elsewhere. Seas 3 to 4 ft.
.WED...Within 90 nm of coast of Colombia, E winds 10 to 15 kt.
Elsewhere, NE winds 10 to 15 kt, shifting to E in the afternoon.
Seas 3 to 4 ft.
.WED NIGHT...E winds 10 to 15 kt within 90 nm of coast of
Colombia, and E less than 10 kt elsewhere. Seas 3 to 4 ft.
.THU...E winds less than 10 kt. Seas 3 to 4 ft.
.THU NIGHT...E winds less than 10 kt. Seas 3 ft.
.FRI...E winds less than 10 kt. Seas 3 ft.
.FRI NIGHT...Variable winds less than 10 kt. Seas 3 ft.
.SAT...Variable winds less than 10 kt, becoming S less than
10 kt in the afternoon. Seas 3 to 4 ft.
.SAT NIGHT...SW winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 3 to 4 ft.

SW Caribbean S of 11N

.TODAY...SE winds less than 10 kt. Seas 3 to 4 ft.
.TONIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.WED...N winds less than 10 kt in the morning, becoming variable
winds less than 10 kt. Seas 3 ft.
.WED NIGHT...Variable winds less than 10 kt. Seas 3 ft.
.THU...Variable winds less than 10 kt, becoming SW less than
10 kt in the afternoon. Seas 3 ft.
.THU NIGHT...Variable winds less than 10 kt. Seas 3 ft.
.FRI...Variable winds less than 10 kt. Seas 3 ft.
.FRI NIGHT...Variable winds less than 10 kt, becoming SW less
than 10 kt after midnight. Seas 3 ft.
.SAT...SW winds less than 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...SW winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft.

Caribbean between 64W and 72W

.TODAY...E winds less than 10 kt. Seas 3 to 5 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.WED...E winds 10 to 15 kt. Seas 3 to 4 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.THU...E winds 10 to 15 kt. Seas 3 to 4 ft.
.THU NIGHT...E winds less than 10 kt. Seas 3 to 4 ft.
.FRI...SE winds less than 10 kt. Seas 3 to 5 ft.
.FRI NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft.
.SAT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.

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

...GALE CONDITIONS POSSIBLE THU AND THU NIGHT...

.TODAY...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.WED...E winds 10 to 15 kt. Seas 5 to 7 ft.
.WED NIGHT...E winds 10 to 15 kt, increasing to 15 to 25 kt
after midnight. Seas 7 to 10 ft.
.THU...E winds 20 to 30 kt. Seas 10 to 15 ft.
.THU NIGHT...SE winds 20 to 30 kt. Seas 10 to 15 ft.
.FRI...SE winds 15 to 25 kt. Seas 9 to 14 ft.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 7 to 10 ft.
.SAT...SE winds 10 to 15 kt. Seas 6 to 8 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.

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

.TODAY...E winds less than 10 kt. Seas 4 to 6 ft.
.TONIGHT...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, building to
6 to 9 ft after midnight.
.THU...SE winds 10 to 15 kt. Seas 7 to 10 ft.
.THU NIGHT...SE winds 10 to 20 kt. Seas 6 to 9 ft.
.FRI...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SAT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Rough seas in N to NE swell across the regional
waters will continue to gradually subside from north to south
over the Atlantic waters through Tue night. Fresh to strong NE
to E winds will prevail north of a stationary front, extending
from the central Atlantic near 28N55W to 24N68W then through the
NW Bahamas and to the SE Florida coast, through late Tue. Winds
will diminish midweek as the front drifts northward and
dissipates. The area of low pressure, AL95, located over the
tropical central Atlantic is becoming better defined. The
associated shower and thunderstorm activity is showing signs of
organization, and environmental conditions appear favorable for
continued development of this system. A tropical depression or
storm is likely to form in the next day or so while it moves
quickly west-northwestward across the central tropical Atlantic,
and a Gale Warning has been issued in anticipation of this. This
system is expected to be near or north of the northern Leeward
Islands on Thursday and Friday, and interests there should
continue to monitor its progress. Regardless of development,
expect an increase in winds and seas across the SE forecast zones
with this system by the end of the week.

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

.TODAY...E winds 15 to 20 kt. Seas 8 to 10 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 7 to 9 ft.
.WED...E winds 10 to 15 kt. Seas 6 to 8 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.THU...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.FRI...E winds 10 to 20 kt. Seas 7 to 10 ft.
.FRI NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft.
.SAT...N winds 10 to 15 kt, increasing to 15 to 25 kt in the
afternoon. Seas 8 to 11 ft, building to 9 to 14 ft in the
afternoon.
.SAT NIGHT...N winds 15 to 25 kt. Seas 9 to 14 ft.

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

.TODAY...E winds 15 to 20 kt. Seas 7 to 10 ft.
.TONIGHT...E winds 15 to 20 kt. Seas 7 to 10 ft.
.WED...E winds 10 to 15 kt W of 70W, and E 10 to 20 kt
elsewhere. Seas 6 to 8 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft.
.THU...E winds 10 to 15 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 7 to 10 ft.
.FRI NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft.
.SAT...S winds 10 to 20 kt. Seas 8 to 12 ft.
.SAT NIGHT...SW winds 10 to 20 kt. Seas 9 to 13 ft.

Bahamas N of 22N

.TODAY...E winds less than 10 kt. Seas 4 to 6 ft.
.TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft.
.WED...SE winds less than 10 kt. Seas 3 to 5 ft.
.WED NIGHT...E winds less than 10 kt. Seas 3 to 4 ft.
.THU...E winds less than 10 kt. Seas 3 to 4 ft.
.THU NIGHT...E winds less than 10 kt. Seas 3 to 4 ft.
.FRI...SE winds less than 10 kt in the morning, becoming
variable winds less than 10 kt. Seas 3 to 4 ft.
.FRI NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.SAT...SW winds less than 10 kt, increasing to 10 to 15 kt in
the afternoon. Seas 4 to 6 ft.
.SAT NIGHT...W winds less than 10 kt. Seas 4 to 6 ft.

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

.TODAY...E winds 10 to 15 kt. Seas 7 to 9 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft.
.WED...E winds 10 to 15 kt. Seas 6 to 8 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.THU...E winds 10 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds less than 10 kt. Seas 5 to 6 ft.
.FRI...SE winds less than 10 kt. Seas 6 to 8 ft.
.FRI NIGHT...SE winds less than 10 kt. Seas 7 to 10 ft.
.SAT...SW winds less than 10 kt. Seas 8 to 11 ft.
.SAT NIGHT...SW winds less than 10 kt. Seas 8 to 12 ft.

ATLC waters S of 22N W of 65W

.TODAY...E winds less than 10 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.WED...E winds 10 to 15 kt, shifting to SE in the afternoon.
Seas 4 to 6 ft.
.WED NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft.
.THU...SE winds less than 10 kt. Seas 3 to 5 ft.
.THU NIGHT...E winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 3 to 5 ft.
.FRI...Variable winds less than 10 kt. Seas 5 to 7 ft.
.FRI NIGHT...Variable winds less than 10 kt. Seas 6 to 8 ft.
.SAT...Variable winds less than 10 kt. Seas 5 to 7 ft.
.SAT NIGHT...Variable winds less than 10 kt. Seas 4 to 6 ft.

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

...GALE CONDITIONS POSSIBLE THU THROUGH FRI...

.TODAY...SE winds 10 to 15 kt. Seas 6 to 8 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft.
.WED...SE winds 10 to 15 kt. Seas 6 to 7 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.THU...E winds 10 to 20 kt. Seas 8 to 13 ft.
.THU NIGHT...E winds 20 to 30 kt. Seas 10 to 15 ft.
.FRI...SE winds 25 to 35 kt. Seas 12 to 17 ft.
.FRI NIGHT...S winds 20 to 30 kt. Seas 12 to 17 ft.
.SAT...S winds 15 to 25 kt. Seas 9 to 14 ft, subsiding to 8 to
11 ft in the afternoon.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 7 to 10 ft.