407
FZNT31 KNHC 021958
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
358 PM EDT Sat Aug 2 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. The strongest winds will
occur off the coast of Colombia, occasionally pulsing to near
gale-force at night. Moderate to fresh trades will prevail over
the E Caribbean while moderate or weaker winds are forecast for
the NW Caribbean. Otherwise, a tropical wave accompanied by
scattered showers and thunderstorms will reach the central
Caribbean tonight, and the western part of the basin by Sun
night into Mon.

NW Caribbean W of 85W

.TONIGHT...E winds less than 10 kt. Seas 3 ft.
.SUN...Variable winds less than 10 kt. Seas 2 ft or less.
.SUN NIGHT...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.

Caribbean N of 15N between 72W and 85W

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

Caribbean from 11N to 15N W of 72W

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

SW Caribbean S of 11N

.TONIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.SUN...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...W winds less than 10 kt. Seas 3 to 5 ft.
.MON...S winds less than 10 kt. Seas 3 to 4 ft.
.MON NIGHT...SW winds less than 10 kt. Seas 3 to 4 ft.
.TUE...Variable winds less than 10 kt. Seas 3 to 5 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...NW winds less than 10 kt. Seas 4 to 6 ft.
.THU NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft.

Caribbean between 64W and 72W

.TONIGHT...NE winds 15 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 4 to 6 ft.
.SUN...E winds 10 to 20 kt. Seas 4 to 6 ft.
.SUN NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 5 to 7 ft.
.MON...E winds 10 to 20 kt. Seas 3 to 5 ft Gulf of Venezuela,
and 5 to 7 ft elsewhere.
.MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.TUE...E winds 10 to 20 kt. 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 4 to 6 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.

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

.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 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 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.

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.
.SUN...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.MON...E winds 10 to 15 kt. Seas 4 to 6 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 20 kt. Seas 4 to 6 ft.
.THU...E winds 10 to 20 kt. Seas 4 to 6 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...High pressure will dominate the weather pattern
through the period, promoting a gentle to moderate anticyclonic
flow and slight to moderate seas. The northern portion of a
tropical wave, currently located over Puerto Rico, will move
across Hispaniola tonight, reaching the Turks and Caicos
Islands, then the SE Bahamas on Sun and Sun night. An area of
low pressure is expected to form tonight or on Sunday along a
frontal system off of the southeastern coast of the United
States. Additional slow development could occur through Monday as
the system moves slowly east-northeastward. After that time,
environmental conditions become less conducive for development.
This system is forecast to remain north of the forecast area.

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

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

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

.TONIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN...SW winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft.
.MON...SW winds 10 to 15 kt. Seas 4 to 6 ft.
.MON NIGHT...S winds less than 10 kt. Seas 4 to 5 ft.
.TUE...S winds less than 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...S 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 in the morning, becoming variable
winds less than 10 kt. Seas 3 to 4 ft.
.THU NIGHT...SW winds less than 10 kt. Seas 3 to 5 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.
.SUN...SE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 ft.
.SUN NIGHT...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 less than 10 kt, shifting to SE after
midnight. Seas 3 ft.
.TUE...SE winds less than 10 kt. Seas 3 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft.
.WED...SE winds 10 to 15 kt. Seas 3 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 ft.
.THU...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 ft in the morning, subsiding to 2 ft or
less.
.THU NIGHT...E winds 10 to 15 kt. Seas 2 ft or less.

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

.TONIGHT...W of 70W, E winds less than 10 kt, increasing to
10 to 15 kt after midnight. Elsewhere, SE winds 10 to 15 kt.
Seas 4 to 6 ft.
.SUN...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...W of 70W, SE winds less than 10 kt, increasing to
10 to 15 kt after midnight. Elsewhere, SE winds 10 to 15 kt.
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. Seas 4 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.
.WED NIGHT...E winds 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.

ATLC waters S of 22N W of 65W

.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...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.

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

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