416
FZNT31 KNHC 111452
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1052 AM EDT Mon Aug 11 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 high pressure north of
the basin and low pressure over Colombia will support fresh to
locally strong winds and moderate to rough seas over the waters
just offshore Venezuela and Colombia through mid week, mainly
during the nights. Expect fresh to locally strong winds to pulse
in the Gulf of Honduras tonight and Tue night, with moderate to
fresh winds pulsing nightly thereafter through Thu. Newly formed
Tropical Storm Erin is near 17.4N 28.0W at 11 AM EDT, and is
moving west at 17 kt. Maximum sustained winds are 40 kt with
gusts to 50 kt, and the minimum central pressure is 1004 mb.
Erin will move to 17.5N 31.2W this evening, 17.4N 35.1W Tue
morning, 17.1N 38.7W Tue evening, 17.1N 41.7W Wed morning,
strengthen to a hurricane near 17.4N 45.0W Wed evening, and
18.0N 48.4W Thu morning. Erin will change little in intensity as
it moves to near 19.6N 54.0W early Fri.

NW Caribbean W of 85W

.THIS AFTERNOON...SE winds 10 to 20 kt. Seas 3 to 4 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft.
.TUE...E winds 10 to 20 kt. Seas 3 to 4 ft.
.TUE NIGHT...E winds 15 to 25 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.
.THU...E winds 10 to 20 kt. Seas 3 to 4 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft.
.FRI...E winds 10 to 20 kt. Seas 3 to 4 ft.

Caribbean N of 15N between 72W and 85W

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

Caribbean from 11N to 15N W of 72W

.THIS AFTERNOON...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.
.TONIGHT...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 15 to 25 kt. Seas 5 to 7 ft.
.WED NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft.
.THU...E winds 15 to 25 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.FRI...E winds 10 to 20 kt. Seas 4 to 6 ft.

SW Caribbean S of 11N

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

Caribbean between 64W and 72W

.THIS AFTERNOON...E winds 10 to 20 kt. Seas 3 ft Gulf of
Venezuela, and 4 to 6 ft elsewhere.
.TONIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft.
.TUE...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela,
and 4 to 6 ft elsewhere.
.TUE NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft.
.WED...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and
4 to 6 ft elsewhere.
.WED NIGHT...NE winds 15 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 3 to 5 ft.
.THU...E winds 10 to 20 kt. Gulf of Venezuela, seas 3 ft in the
morning, subsiding to 2 ft or less. Elsewhere, seas 3 to 5 ft.
.THU NIGHT...NE winds 10 to 20 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. Seas 3 to 4 ft.
.FRI...E winds 10 to 20 kt. Seas 3 to 4 ft.

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

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE...E winds 10 to 15 kt. Seas 4 to 6 ft.
.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 4 to 6 ft.
.THU...E winds 10 to 15 kt. Seas 4 to 6 ft.
.THU NIGHT...HURRICANE CONDITIONS POSSIBLE.
.FRI...HURRICANE CONDITIONS POSSIBLE.

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

.THIS AFTERNOON...E winds 10 to 20 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE...E winds 10 to 20 kt. Seas 4 to 6 ft.
.TUE NIGHT...E 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 4 to 6 ft.
.THU...E winds 10 to 15 kt, shifting to SE in the afternoon.
Seas 3 to 5 ft.
.THU NIGHT...E winds less than 10 kt. Seas 3 to 5 ft.
.FRI...SE winds less than 10 kt. Seas 3 to 4 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A weak pressure gradient will result in gentle to
moderate winds and mainly slight seas into mid-week for most of
the waters, although fresh winds will pulse offshore Hispaniola
each evening. Newly formed Tropical Storm Erin is near 17.4N
28.0W at 11 AM EDT, and is moving west at 17 kt. Maximum
sustained winds are 40 kt with gusts to 50 kt, and the minimum
central pressure is 1004 mb. Erin will move to 17.5N 31.2W this
evening, 17.4N 35.1W Tue morning, 17.1N 38.7W Tue evening, 17.1N
41.7W Wed morning, strengthen to a hurricane near 17.4N 45.0W
Wed evening, and 18.0N 48.4W Thu morning. Erin will change
little in intensity as it moves to near 19.6N 54.0W early Fri.

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

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE...SE winds less than 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...S winds less than 10 kt. Seas 3 ft.
.WED...S winds 10 kt in the morning, becoming variable winds
less than 10 kt. Seas 3 ft.
.WED NIGHT...S winds less than 10 kt. Seas 3 ft.
.THU...SW winds less than 10 kt. Seas 3 ft.
.THU NIGHT...S winds less than 10 kt. Seas 3 ft.
.FRI...SW winds less than 10 kt. Seas 3 ft.

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

.THIS AFTERNOON...E winds 10 to 15 kt W of 70W, and E less than
10 kt elsewhere. Seas 3 to 4 ft.
.TONIGHT...SE winds less than 10 kt. Seas 3 to 4 ft.
.TUE...SE winds less than 10 kt W of 70W, and Variable less than
10 kt elsewhere. Seas 3 to 4 ft.
.TUE NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft.
.WED...SW winds less than 10 kt. Seas 3 to 4 ft.
.WED NIGHT...S winds less than 10 kt. Seas 3 ft.
.THU...SW winds less than 10 kt. Seas 3 ft.
.THU NIGHT...S winds less than 10 kt. Seas 3 ft.
.FRI...SW winds less than 10 kt. Seas 3 ft.

Bahamas N of 22N

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 3 ft.
.TUE...SE winds 10 to 15 kt. Seas 3 ft in the morning, subsiding
to 2 ft or less.
.TUE NIGHT...E winds 10 to 15 kt. Seas 2 ft or less.
.WED...E winds 10 to 15 kt. Seas 2 ft or less.
.WED NIGHT...E winds 10 to 15 kt. Seas 2 ft or less.
.THU...E winds less than 10 kt. Seas 2 ft or less.
.THU NIGHT...E winds 10 to 15 kt. Seas 2 ft or less.
.FRI...E winds 10 to 15 kt. Seas 2 ft or less.

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

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

ATLC waters S of 22N W of 65W

.THIS AFTERNOON...E winds 10 to 20 kt. Seas 3 to 5 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.TUE...E winds 10 to 20 kt. Seas 3 to 5 ft.
.TUE NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft.
.WED...E winds 10 to 15 kt. Seas 3 to 4 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft.
.THU...E winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.FRI...E 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 15 kt. Seas 4 to 5 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.TUE...E winds 10 to 15 kt. Seas 4 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 4 to 6 ft.
.THU...E winds 10 to 20 kt. Seas 5 to 6 ft.
.THU NIGHT...HURRICANE CONDITIONS POSSIBLE.
.FRI...HURRICANE CONDITIONS POSSIBLE.