796
FZNT31 KNHC 241514
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1114 AM EDT Sun Aug 24 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...Showers and thunderstorms associated with a tropical
wave located about 175 nm east of the Windward Islands have
increased since yesterday. However, the wave does not appear to
have a surface circulation. This system could still become a
tropical depression during the next day or two while it moves
quickly westward at about 15 to 20 kt, passing through the
Windward and Leeward Islands later today and early Monday.
Regardless of development, locally heavy rainfall and gusty
winds are likely across portions of the Windward and Leeward
Islands today and Monday. The system is expected to reach the
central Caribbean Sea on Tuesday, where conditions are forecast
to become less favorable for additional development. This wave
will bring increasing winds and building seas across the waters
E of the Lesser Antilles today, and over most of the east and
central Caribbean tonight through Wed. Fresh to strong E to SE
winds will pulse across the Gulf of Honduras mainly at night
through Tue night. NW to N swell will propagate across the
tropical Atlantic waters and move through the Atlantic Passages
through Mon.

NW Caribbean W of 85W

.THIS AFTERNOON...E winds 10 to 20 kt. Seas 3 to 4 ft.
.TONIGHT...E winds 15 to 25 kt. Seas 3 to 4 ft.
.MON...E winds 20 to 30 kt. Seas 3 to 5 ft.
.MON NIGHT...E winds 15 to 25 kt. Seas 3 to 5 ft.
.TUE...E winds 10 to 20 kt. Seas 3 to 5 ft.
.TUE NIGHT...NE winds 15 to 25 kt. Seas 3 to 4 ft.
.WED...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.THU...NE winds less than 10 kt. Seas 3 to 4 ft.

Caribbean N of 15N between 72W and 85W

.THIS AFTERNOON...E winds 10 to 20 kt. S of 18N, seas 3 to 5 ft.
Elsewhere, seas 2 ft or less, building to 3 ft in the afternoon.
.TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.MON...E winds 10 to 20 kt. S of 18N, seas 4 to 6 ft. Elsewhere,
seas 2 ft or less, building to 3 ft in the afternoon.
.MON NIGHT...E winds 20 to 30 kt S of 18N, and NE 15 to 25 kt
elsewhere. S of 18N, seas 5 to 7 ft. Elsewhere, seas 2 ft or
less, building to 3 ft after midnight.
.TUE...E winds 15 to 25 kt. Seas 5 to 7 ft S of 18N, and 3 to
4 ft elsewhere.
.TUE NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft S of 18N, and
3 to 5 ft elsewhere.
.WED...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt
elsewhere. Seas 5 to 7 ft S of 18N, and 3 to 5 ft elsewhere.
.WED NIGHT...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt
elsewhere. Seas 5 to 7 ft S of 18N, and 3 to 4 ft elsewhere.
.THU...E winds 10 to 20 kt. Seas 5 to 7 ft S of 18N, and 3 ft
elsewhere.

Caribbean from 11N to 15N W of 72W

.THIS AFTERNOON...E winds 15 to 25 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 20 to 30 kt. Seas 7 to 10 ft within 90 nm of
coast of Colombia, and 5 to 7 ft elsewhere.
.MON...E winds 20 to 30 kt. Seas 5 to 7 ft.
.MON NIGHT...NE winds 20 to 30 kt. Seas 5 to 7 ft.
.TUE...E winds 15 to 25 kt. Seas 6 to 8 ft.
.TUE NIGHT...NE winds 15 to 25 kt. Seas 6 to 8 ft.
.WED...E winds 15 to 25 kt. Seas 6 to 9 ft.
.WED NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft.
.THU...E winds 10 to 20 kt within 90 nm of coast of Colombia,
and E 15 to 25 kt elsewhere. Seas 5 to 7 ft.

SW Caribbean S of 11N

.THIS AFTERNOON...W winds less than 10 kt. Seas 3 to 4 ft.
.TONIGHT...N winds less than 10 kt, increasing to 10 to 20 kt
after midnight. Seas 3 to 4 ft.
.MON...N winds 15 to 25 kt. Seas 5 to 7 ft.
.MON NIGHT...NE winds 15 to 25 kt. Seas 5 to 7 ft.
.TUE...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.TUE NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft.
.WED...W winds 10 to 15 kt. Seas 4 to 6 ft.
.WED NIGHT...W winds 10 to 15 kt. Seas 3 to 5 ft.
.THU...SW winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 5 ft.

Caribbean between 64W and 72W

.THIS AFTERNOON...E winds 15 to 25 kt. Seas 3 to 5 ft.
.TONIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 15 to
25 kt elsewhere. Seas 4 to 6 ft.
.MON...E winds 15 to 25 kt. Seas 3 to 5 ft Gulf of Venezuela,
and 5 to 7 ft elsewhere.
.MON NIGHT...E winds 20 to 30 kt. Seas 3 to 5 ft Gulf of
Venezuela, and 6 to 8 ft elsewhere.
.TUE...E winds 15 to 25 kt. Seas 3 to 4 ft Gulf of Venezuela,
and 6 to 8 ft elsewhere.
.TUE NIGHT...NE winds 15 to 25 kt Gulf of Venezuela, and E 15 to
25 kt elsewhere. Seas 5 to 7 ft.
.WED...E winds 15 to 25 kt. Seas 5 to 7 ft.
.WED NIGHT...E winds 10 to 20 kt Gulf of Venezuela, and E 15 to
25 kt elsewhere. Seas 5 to 7 ft.
.THU...NE winds 10 to 20 kt Gulf of Venezuela, and E 15 to 25 kt
elsewhere. Seas 3 to 4 ft Gulf of Venezuela, and 4 to 6 ft
elsewhere.

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

.THIS AFTERNOON...E winds 15 to 25 kt. Seas 6 to 9 ft.
.TONIGHT...E winds 20 to 30 kt. Seas 7 to 10 ft.
.MON...E winds 15 to 25 kt. Seas 7 to 10 ft.
.MON NIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft.
.TUE...E winds 10 to 20 kt. Seas 5 to 7 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.WED...SE 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.

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

.THIS AFTERNOON...E winds 15 to 25 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 20 to 30 kt. Seas 5 to 7 ft.
.MON...E winds 15 to 25 kt. Seas 5 to 7 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 4 to 6 ft.
.WED...SE 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.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Tropical Storm Fernand is near 31.0N 60.0W at 11 AM
EDT, and is moving north-northeast at 13 kt. Maximum sustained
winds are 35 kt with gusts to 45 kt, and the minimum central
pressure is 1010 mb. Fernand will move to 32.6N 59.1W this
evening, 34.8N 57.8W Mon morning, 36.9N 56.4W Mon evening, 39.3N
54.3W Tue morning, 42.0N 51.0W Tue evening, and become
extratropical and move to 44.5N 46.0W Wed morning. Fernand will
dissipate early Thu. Meanwhile, large northerly swell generated
by distant extratropical cyclone Erin will continue to affect
the W Atlantic waters through the next couple of days. A
stationary front will linger off the SE U.S. coast into the early
part of the week with fresh winds SE of it. Fresh to strong
winds will pulse N of Hispaniola late Mon afternoon through Tue
night.

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

.THIS AFTERNOON...SW winds 10 to 20 kt. Seas 6 to 8 ft.
.TONIGHT...W winds 10 to 20 kt. Seas 6 to 8 ft.
.MON...SW winds 10 to 20 kt. Seas 5 to 7 ft.
.MON NIGHT...SW winds 10 to 20 kt. Seas 4 to 5 ft.
.TUE...SW winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 5 ft.
.TUE NIGHT...SW winds 10 to 15 kt, shifting to W after midnight.
Seas 3 to 4 ft.
.WED...N winds less than 10 kt. Seas 3 ft.
.WED NIGHT...E winds less than 10 kt. Seas 3 ft.
.THU...E winds less than 10 kt. Seas 3 ft.

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

.THIS AFTERNOON...W of 70W, SW winds 15 to 25 kt. Elsewhere, SW
winds less than 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 7 to 8 ft.
.TONIGHT...SW winds 15 to 25 kt W of 70W, and SW 10 to 20 kt
elsewhere. Seas 6 to 8 ft.
.MON...SW winds 15 to 25 kt W of 70W, and SW 10 to 20 kt
elsewhere. Seas 6 to 8 ft.
.MON NIGHT...W of 70W, S winds 10 to 20 kt. Elsewhere, SW winds
10 to 15 kt, shifting to S after midnight. Seas 5 to 7 ft.
.TUE...S winds 10 to 20 kt. Seas 4 to 6 ft.
.TUE NIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft.
.WED...S winds 10 to 20 kt. Seas 3 to 4 ft.
.WED NIGHT...SW winds 10 to 20 kt, shifting to E 10 to 15 kt
after midnight. Seas 3 to 4 ft.
.THU...SE winds less than 10 kt W of 70W, and SE 10 to 15 kt
elsewhere. Seas 3 to 4 ft.

Bahamas N of 22N

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.MON...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 3 ft.
.TUE...SE winds 10 to 20 kt. Seas 3 ft.
.TUE NIGHT...E winds 10 to 20 kt. Seas 3 ft.
.WED...E winds 10 to 20 kt. Seas 3 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 ft.
.THU...E winds 10 to 15 kt. Seas 2 ft or less.

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

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 7 to 8 ft.
.TONIGHT...SE winds 10 to 15 kt. Seas 6 to 7 ft.
.MON...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.TUE...SE winds 10 to 20 kt. Seas 5 to 7 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...SE winds 10 to 15 kt. Seas 3 to 5 ft.

ATLC waters S of 22N W of 65W

.THIS AFTERNOON...E winds 10 to 20 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.MON...E winds 10 to 20 kt. Seas 4 to 6 ft.
.MON NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft.
.TUE...E winds 15 to 25 kt. Seas 5 to 7 ft.
.TUE NIGHT...E winds 15 to 25 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...SE winds 10 to 20 kt. Seas 3 to 5 ft.

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

.THIS AFTERNOON...E winds 10 to 20 kt. Seas 7 to 8 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 7 to 8 ft.
.MON...E winds 10 to 20 kt. Seas 7 to 9 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 7 to 8 ft.
.TUE...E winds 10 to 15 kt. Seas 6 to 8 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft.
.WED...SE winds 10 to 15 kt. Seas 5 to 6 ft.
.WED NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.THU...SE winds 10 to 15 kt. Seas 4 to 5 ft.