525
FZNT31 KNHC 032017
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
417 PM EDT Sun Aug 3 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. Moderate to locally fresh
trades are expected over the E Caribbean. 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

.TONIGHT...E winds less than 10 kt. Seas 2 ft or less.
.MON...E winds less than 10 kt. Seas 2 ft or less.
.MON NIGHT...E winds 10 to 15 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.
.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 5 ft.
.THU NIGHT...E winds less than 10 kt. Seas 3 ft.
.FRI...E winds less than 10 kt in the morning, becoming 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, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less.

Caribbean N of 15N between 72W and 85W

.TONIGHT...E winds 10 to 20 kt S of 18N, and E less than 10 kt
elsewhere. S of 18N, seas 4 to 6 ft. Elsewhere, seas 2 ft or
less, building to 3 ft after midnight.
.MON...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds less
than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas
4 to 6 ft S of 18N, and 3 ft elsewhere.
.MON NIGHT...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 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 3 to 5 ft.
.THU...E winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt
after midnight. Seas 3 to 5 ft.
.FRI...E winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.

Caribbean from 11N to 15N W of 72W

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

SW Caribbean S of 11N

.TONIGHT...N winds less than 10 kt. Seas 3 to 5 ft.
.MON...SW winds less than 10 kt, increasing to 10 to 15 kt in
the afternoon. Seas 3 to 5 ft.
.MON NIGHT...SW winds less than 10 kt. Seas 3 to 5 ft.
.TUE...SE winds less than 10 kt. Seas 3 to 5 ft.
.TUE NIGHT...E winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 3 to 5 ft.
.WED...Variable winds less than 10 kt, becoming NW less than
10 kt in the afternoon. Seas 4 to 6 ft.
.WED NIGHT...NW winds less than 10 kt, shifting to N after
midnight. Seas 4 to 6 ft.
.THU...N winds 10 to 15 kt. Seas 4 to 6 ft.
.THU NIGHT...N winds 10 to 15 kt. 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, increasing to 10 to 15 kt
after midnight. Seas 4 to 6 ft.

Caribbean between 64W and 72W

.TONIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 5 to 7 ft.
.MON...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt
elsewhere. Seas 5 to 7 ft.
.MON NIGHT...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 10 to 20 kt. 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 20 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 20 kt. Seas 3 to 5 ft.

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

.TONIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.MON...E winds 10 to 15 kt. Seas 4 to 5 ft.
.MON NIGHT...E winds 10 to 15 kt. 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 4 ft.
.WED...E 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 4 to 6 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 Windward Islands and adjacent ATLC waters from 07N to
15N W of 55W

.TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.MON...E winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...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 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 4 to 6 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...High pressure will dominate the weather pattern
through the period, supporting gentle to moderate anticyclonic
flow and slight to moderate seas. The northern portion of a
tropical wave, currently moving across Hispaniola, will reach
the Turks and Caicos Islands this evening, and the SE Bahamas
tonight. Moderate to locally fresh SE winds are expected in the
wake of this system. An area of showers and thunderstorms,
supported by a moist and humid southerly flow will persist over
the east waters, particularly N of 20N between 60W and 70W,
through at least Mon. Winds and seas could be higher near
thunderstorms.

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

.TONIGHT...S winds less than 10 kt. Seas 4 to 6 ft.
.MON...SW winds less than 10 kt. Seas 4 to 6 ft.
.MON NIGHT...E winds less than 10 kt. Seas 4 to 5 ft.
.TUE...S winds less than 10 kt in the morning, becoming variable
winds less than 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...E 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...Variable winds less than 10 kt. Seas 3 ft.
.THU NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.FRI...S winds less than 10 kt. Seas 3 to 4 ft.
.FRI NIGHT...Variable winds less than 10 kt, becoming S less
than 10 kt after midnight. Seas 3 to 4 ft.

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

.TONIGHT...W of 70W, W winds 10 to 15 kt, shifting to SW after
midnight. Elsewhere, S winds 10 to 15 kt. Seas 4 to 6 ft.
.MON...W of 70W, SW winds 10 to 15 kt, diminishing to less than
10 kt in the afternoon. Elsewhere, SW winds 10 to 15 kt. Seas
4 to 6 ft.
.MON NIGHT...W of 70W, S winds less than 10 kt. Elsewhere, SW
winds 10 to 15 kt, diminishing to less than 10 kt after
midnight. Seas 4 to 6 ft.
.TUE...SW winds less than 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft.
.WED...S winds less than 10 kt. Seas 3 to 4 ft.
.WED NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft.
.THU...S winds less than 10 kt. Seas 3 to 4 ft.
.THU NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft.
.FRI...SE winds 10 kt. Seas 3 to 4 ft.
.FRI NIGHT...Variable winds less than 10 kt, becoming SE 10 kt
after midnight. Seas 3 to 4 ft.

Bahamas N of 22N

.TONIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less, building to 3 ft after
midnight.
.MON...SE winds less than 10 kt. Seas 3 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to
3 to 4 ft after midnight.
.TUE...E winds less than 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft.
.WED...SE winds 10 to 15 kt, shifting to E in the afternoon.
Seas 3 ft.
.WED NIGHT...E winds 10 to 15 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...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...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less.

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

.TONIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 5 ft.
.MON...SE winds 10 to 15 kt. Seas 4 to 5 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 5 ft.
.TUE...SE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 4 to 5 ft.
.TUE NIGHT...E winds less than 10 kt. Seas 3 to 5 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 10 kt. Seas 3 to 4 ft.
.THU NIGHT...E winds less than 10 kt. Seas 3 to 4 ft.
.FRI...SE winds 10 kt. Seas 3 ft.
.FRI NIGHT...E winds 10 kt. Seas 3 to 4 ft.

ATLC waters S of 22N W of 65W

.TONIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.MON...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...E winds 10 to 20 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 10 to 15 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

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