767
FZNT31 KNHC 292121
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
521 PM EDT Fri Aug 29 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...Scattered showers and thunderstorms in the
southeastern Caribbean are not presently associated with a
tropical wave, but are expected to persist into Sat, at which
time a tropical wave will approach the Lesser Antilles and the
eastern Caribbean. Another tropical wave, currently along 77W,
will move across the rest of the central Caribbean today, then
across the western part of the basin Sat through Sun night.
Otherwise, Atlantic high pressure in combination with low
pressure over northern Colombia will maintain fresh to strong
trades along with moderate to rough seas across much of the
central Caribbean through early next week. The coverage of these
winds is forecast to shrink starting early on Tue.

NW Caribbean W of 85W

.TONIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft.
.SAT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.SUN...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.SUN NIGHT...E winds 10 to 20 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 ft.
.TUE...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.
.TUE NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.WED...SE winds less than 10 kt. Seas 2 ft or less.
.WED NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less.

Caribbean N of 15N between 72W and 85W

.TONIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt
elsewhere. Seas 4 to 6 ft S of 18N, and 3 to 4 ft elsewhere.
.SAT...E winds 10 to 15 kt S of 18N, and SE less than 10 kt
elsewhere. Seas 3 to 5 ft.
.SAT NIGHT...E winds 10 to 15 kt S of 18N, and NE less than
10 kt elsewhere. Seas 3 to 5 ft.
.SUN...E winds 10 to 15 kt S of 18N, and E less than 10 kt
elsewhere. Seas 3 to 5 ft S of 18N, and 2 ft or less elsewhere.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.MON...E winds 10 to 15 kt. Seas 3 to 4 ft.
.MON NIGHT...NE 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 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.

Caribbean from 11N to 15N W of 72W

.TONIGHT...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.
.SAT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.SAT NIGHT...NE winds 15 to 25 kt within 90 nm of coast of
Colombia, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft.
.SUN...E 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 10 to 20 kt. Seas 5 to 7 ft.
.MON NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.TUE...E winds 10 to 20 kt. Seas 4 to 6 ft.
.TUE NIGHT...NE 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 3 to 5 ft.

SW Caribbean S of 11N

.TONIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft.
.SAT...Variable winds less than 10 kt. Seas 3 to 5 ft.
.SAT NIGHT...N winds less than 10 kt. Seas 3 to 5 ft.
.SUN...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...N winds less than 10 kt. Seas 4 to 6 ft.
.MON...NE winds less than 10 kt, shifting to NW in the
afternoon. Seas 4 to 6 ft.
.MON NIGHT...NW winds 10 to 15 kt, diminishing to less than
10 kt after midnight. Seas 3 to 5 ft.
.TUE...W winds less than 10 kt. Seas 3 to 5 ft.
.TUE NIGHT...W winds less than 10 kt. Seas 3 to 4 ft.
.WED...SW winds less than 10 kt. Seas 3 to 4 ft.
.WED NIGHT...W winds less than 10 kt. Seas 3 to 4 ft.

Caribbean between 64W and 72W

.TONIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. Seas 3 to 5 ft.
.SAT...E winds 10 to 20 kt Gulf of Venezuela, and E 10 to 15 kt
elsewhere. Seas 3 to 5 ft.
.SAT NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. Seas 3 to 4 ft.
.SUN...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 15 kt
elsewhere. Seas 3 to 5 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.MON...E winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.TUE...E winds 10 to 20 kt. Seas 4 to 6 ft.
.TUE NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.WED...E winds 10 to 20 kt. Seas 3 to 5 ft.
.WED 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 3 to 5 ft.
.SAT...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 5 ft.
.SAT NIGHT...E winds less than 10 kt. Seas 3 to 4 ft.
.SUN...E winds less than 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...E winds less than 10 kt. Seas 3 to 4 ft.
.MON...E winds less than 10 kt. Seas 3 to 4 ft.
.MON NIGHT...E winds less than 10 kt. Seas 3 to 4 ft.
.TUE...E winds less than 10 kt. Seas 3 to 5 ft.
.TUE NIGHT...E winds less than 10 kt. Seas 3 to 5 ft.
.WED...E winds 10 to 15 kt. Seas 3 to 5 ft.
.WED NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft.

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

.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.MON...E winds 10 to 15 kt. Seas 3 to 4 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 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.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A stationary front extends from near 31N73W to
30N77W, to inland northern Florida and continuing well west from
there. The combination of this feature with an upper level
trough passing east of NE Florida is resulting in scattered to
numerous showers across most of the western half of the offshore
waters. Low pressure is expected to form along the front west of
the area and track ENE to offshore the southeastern United States
Sat night through Mon. As this happens, the stationary front
will transition to a cold front that will slowly sink southward
through late Mon. Behind it, strengthening high pressure will
surge southward along the southeastern U.S. coast increasing the
gradient behind the front leading to fresh northeast to east
winds N of 29N and W of 79W Mon night into Tue. Expect for the
scattered showers and thunderstorms to continue through the
weekend, except into early next week for the northwest portion of
the area. Elsewhere, high pressure will remain in control of the
general weather pattern providing for a gentle to moderate
anticyclonic wind flow.

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

.TONIGHT...SE winds less than 10 kt. Seas 3 ft.
.SAT...SE winds less than 10 kt. Seas 3 ft.
.SAT NIGHT...SW winds less than 10 kt. Seas 3 to 4 ft.
.SUN...N winds less than 10 kt. Seas 3 to 5 ft.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.MON...NE winds 10 to 15 kt. Seas 5 to 7 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.TUE...E winds less than 10 kt. Seas 4 to 6 ft.
.TUE NIGHT...SE winds less than 10 kt. Seas 4 to 6 ft.
.WED...S winds 10 kt. Seas 4 to 6 ft.
.WED NIGHT...SW winds 10 kt. Seas 4 ft.

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

.TONIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.SAT...SE winds less than 10 kt in the morning, becoming
variable winds less than 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft.
.SUN...SW winds less than 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...SW winds less than 10 kt. Seas 3 to 5 ft.
.MON...SW winds less than 10 kt. Seas 3 to 5 ft.
.MON NIGHT...S winds less than 10 kt. Seas 3 to 5 ft.
.TUE...S winds less than 10 kt. Seas 3 to 5 ft.
.TUE NIGHT...S winds less than 10 kt. Seas 3 to 5 ft.
.WED...S winds 10 to 15 kt. Seas 4 to 5 ft.
.WED NIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft.

Bahamas N of 22N

.TONIGHT...SE winds less than 10 kt. Seas 2 ft or less.
.SAT...S winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...Variable winds less than 10 kt, becoming SE less
than 10 kt after midnight. Seas 2 ft or less.
.SUN...SW winds less than 10 kt. Seas 2 ft or less.
.SUN NIGHT...NW winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 2 ft or less.
.MON...SW winds less than 10 kt. Seas 2 ft or less.
.MON NIGHT...Variable winds less than 10 kt, becoming S less
than 10 kt after midnight. Seas 2 ft or less.
.TUE...S winds less than 10 kt. Seas 2 ft or less.
.TUE NIGHT...S winds less than 10 kt. Seas 2 ft or less.
.WED...S winds less than 10 kt. Seas 2 ft or less, building to
3 ft in the afternoon.
.WED NIGHT...S winds less than 10 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less.

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

.TONIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.SAT...Variable winds less than 10 kt. Seas 3 ft.
.SAT NIGHT...Variable winds less than 10 kt, becoming SE less
than 10 kt after midnight. Seas 3 ft.
.SUN...SE winds 10 kt. Seas 3 ft.
.SUN NIGHT...SE winds less than 10 kt. Seas 3 ft.
.MON...S winds 10 kt. Seas 3 ft.
.MON NIGHT...SE winds 10 kt. Seas 3 ft.
.TUE...SE winds 10 kt. Seas 3 ft.
.TUE NIGHT...SE winds 10 kt. Seas 3 to 4 ft.
.WED...SE winds 10 kt. Seas 3 to 4 ft.
.WED NIGHT...SE winds 10 kt. Seas 3 to 4 ft.

ATLC waters S of 22N W of 65W

.TONIGHT...E winds less than 10 kt. Seas 3 ft.
.SAT...E winds less than 10 kt. Seas 3 ft.
.SAT NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.SUN...SE winds less than 10 kt. Seas 3 ft.
.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 2 ft or less.
.TUE...SE winds less than 10 kt. Seas 2 ft or less.
.TUE NIGHT...E winds 10 to 15 kt. Seas 2 ft or less.
.WED...SE winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft
in the afternoon.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 ft.

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

.TONIGHT...E winds 10 kt. Seas 3 to 4 ft.
.SAT...E winds 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...E winds 10 kt. Seas 3 to 4 ft.
.SUN...E winds 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...E winds 10 kt. Seas 3 to 4 ft.
.MON...E winds 10 kt. Seas 3 to 4 ft.
.MON NIGHT...E winds 10 kt. Seas 3 to 4 ft.
.TUE...E winds 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...E winds 10 kt. Seas 4 ft.
.WED...E winds 10 kt. Seas 4 ft.
.WED NIGHT...E winds 10 kt. Seas 4 ft.