599
FZNT31 KNHC 041505
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1105 AM EDT Mon Aug 4 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...The pressure gradient between the Atlantic high
pressure and the Colombia low will continue to allow for fresh
to strong winds and rough seas over the south-central Caribbean
mainly at night through Wed night. Afterward, winds over the
central basin will diminish to moderate to fresh speeds through
Fri night. Gentle to moderate trades are expected over the E
Caribbean through the forecast period. Moderate or weaker winds
over the NW Caribbean will reach moderate to fresh speeds Mon
night through Wed as a tropical wave moves across the area.
Fresh to locally strong E winds are also expected in the Gulf of
Honduras Tue through Wed night.

NW Caribbean W of 85W

.THIS AFTERNOON...E winds less than 10 kt. Seas 2 ft or less.
.TONIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to
3 to 4 ft after midnight.
.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.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.THU...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft.
.THU NIGHT...E winds less than 10 kt. Seas 3 ft.
.FRI...Variable winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less.
.FRI NIGHT...E winds less than 10 kt. Seas 2 ft or less.

Caribbean N of 15N between 72W and 85W

.THIS AFTERNOON...E winds 10 to 20 kt. Seas 5 to 7 ft S of 18N,
and 3 ft elsewhere.
.TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft S of 18N, and
3 to 5 ft elsewhere.
.TUE...E winds 10 to 20 kt. Seas 6 to 8 ft S of 18N, and 3 to
5 ft elsewhere.
.TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft S of 18N, and
3 to 5 ft elsewhere.
.WED...E winds 10 to 15 kt. Seas 4 to 6 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 less than 10 kt. Seas 3 to 5 ft.
.FRI...E winds 10 to 15 kt. Seas 3 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.

Caribbean from 11N to 15N W of 72W

.THIS AFTERNOON...E winds 15 to 25 kt within 90 nm of coast of
Colombia, and E 10 to 20 kt elsewhere. Seas 6 to 8 ft.
.TONIGHT...E winds 15 to 25 kt within 90 nm of coast of
Colombia, and E 10 to 20 kt elsewhere. Seas 6 to 8 ft.
.TUE...E winds 15 to 25 kt. Seas 6 to 9 ft.
.TUE NIGHT...E winds 15 to 25 kt within 90 nm of coast of
Colombia, and E 10 to 20 kt elsewhere. Seas 7 to 10 ft within
90 nm of coast of Colombia, and 5 to 7 ft elsewhere.
.WED...E winds 10 to 20 kt. Seas 6 to 8 ft.
.WED NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.THU...NE winds 10 to 20 kt. Seas 4 to 6 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft.

SW Caribbean S of 11N

.THIS AFTERNOON...SW winds less than 10 kt. Seas 3 to 5 ft.
.TONIGHT...SW winds less than 10 kt. Seas 3 to 5 ft.
.TUE...Variable winds less than 10 kt. Seas 4 to 6 ft.
.TUE NIGHT...Variable winds less than 10 kt. Seas 4 to 6 ft.
.WED...Variable winds less than 10 kt, becoming W less than
10 kt in the afternoon. Seas 4 to 6 ft.
.WED NIGHT...N winds less than 10 kt. Seas 4 to 6 ft.
.THU...N winds less than 10 kt. Seas 4 to 6 ft.
.THU NIGHT...N winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 4 to 6 ft.
.FRI...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...NE winds less than 10 kt. Seas 4 to 6 ft.

Caribbean between 64W and 72W

.THIS AFTERNOON...E winds 15 to 25 kt Gulf of Venezuela, and E
10 to 20 kt elsewhere. Seas 5 to 7 ft.
.TONIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 5 to 7 ft.
.TUE...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt
elsewhere. Seas 5 to 7 ft.
.TUE NIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 5 to 7 ft.
.WED...E winds 10 to 20 kt. Seas 4 to 6 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.THU...E winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI 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

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 4 to 5 ft.
.TONIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 5 ft.
.TUE...E winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.WED...E winds 10 to 15 kt. Seas 3 to 5 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 4 to 6 ft.
.FRI...E winds less than 10 kt. Seas 3 to 5 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.

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

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...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...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 4 to 6 ft.
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Weak low pressure will develop north of the Bahamas
through mid week. This pattern will support gentle to moderate
anticyclonic flow and slight to moderate seas. An area of
showers
 and thunderstorms, supported by moist and humid southerly flow,
will persist northeast of the Bahamas today. Winds and seas
could
be higher near thunderstorms.

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

.THIS AFTERNOON...Variable winds less than 10 kt. Seas 4 to
5 ft.
.TONIGHT...Variable winds less than 10 kt, becoming S less than
10 kt after midnight. Seas 4 to 5 ft.
.TUE...Variable winds less than 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...Variable winds less than 10 kt. Seas 4 ft.
.WED...Variable winds less than 10 kt. Seas 3 to 4 ft.
.WED NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.THU...N winds less than 10 kt. Seas 3 to 4 ft.
.THU NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.FRI...SW winds less than 10 kt. Seas 3 to 4 ft.
.FRI NIGHT...S winds less than 10 kt. Seas 3 to 5 ft.

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

.THIS AFTERNOON...W winds less than 10 kt W of 70W, and SW 10 to
15 kt elsewhere. Seas 5 to 6 ft.
.TONIGHT...Variable winds less than 10 kt W of 70W, and SW less
than 10 kt elsewhere. Seas 5 to 6 ft.
.TUE...Variable winds less than 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft.
.WED...Variable winds less than 10 kt, becoming S less than
10 kt in the afternoon. Seas 3 to 4 ft.
.WED NIGHT...Variable winds less than 10 kt, becoming SE less
than 10 kt after midnight. Seas 3 to 4 ft.
.THU...SE winds less than 10 kt. Seas 3 to 4 ft.
.THU NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft.
.FRI...SE winds less than 10 kt. Seas 3 to 5 ft.
.FRI NIGHT...E winds less than 10 kt. Seas 4 to 5 ft.

Bahamas N of 22N

.THIS AFTERNOON...E winds less than 10 kt. Seas 3 to 4 ft.
.TONIGHT...E winds less than 10 kt. Seas 3 to 4 ft.
.TUE...E winds less than 10 kt. Seas 3 ft.
.TUE NIGHT...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. Seas 3 ft in the evening,
subsiding to 2 ft or less.
.THU...E winds less than 10 kt. Seas 2 ft or less.
.THU NIGHT...SE 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.

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

.THIS AFTERNOON...SE winds less than 10 kt. Seas 4 to 5 ft.
.TONIGHT...SE winds less than 10 kt. Seas 4 to 5 ft.
.TUE...SE winds less than 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...E winds less than 10 kt. Seas 3 to 4 ft.
.WED...E winds less than 10 kt. Seas 3 to 4 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...E winds less than 10 kt. Seas 3 to 4 ft.
.FRI NIGHT...E winds less than 10 kt. Seas 3 to 4 ft.

ATLC waters S of 22N W of 65W

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 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...E 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, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...E winds less than 10 kt. Seas 3 to 4 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.

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

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...E winds 10 kt. Seas 3 to 4 ft.
.TUE...E winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE NIGHT...E winds 10 kt. Seas 4 ft.
.WED...E winds 10 kt. Seas 4 to 5 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.THU...E winds 10 kt. Seas 3 to 5 ft.
.THU NIGHT...E winds 10 kt. Seas 3 to 5 ft.
.FRI...E winds 10 kt. Seas 4 ft.
.FRI NIGHT...E winds 10 kt. Seas 4 ft.