830
FZNT31 KNHC 120846
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
446 AM EDT Sat Jul 12 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 Bermuda high and
the Colombian low will continue to support pulsing fresh to
strong trades and rough seas across the south-central Caribbean
through the forecast period. Fresh E winds are expected across
the Gulf of Honduras, mainly at night, into early next week,
pulsing to locally strong Sun night and Mon night. Moderate to
fresh winds and moderate seas are expected in the eastern
Caribbean through the weekend while gentle to moderate winds and
slight to moderate seas will prevail NW portions.

NW Caribbean W of 85W

.TODAY...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.SUN...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...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 10 to 20 kt. Seas 4 to 6 ft.
.TUE...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.WED...SE winds 10 to 15 kt, shifting to E in the afternoon.
Seas 3 to 4 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.

Caribbean N of 15N between 72W and 85W

.TODAY...E winds 10 to 20 kt. Seas 6 to 8 ft S of 18N, and 3 to
5 ft elsewhere.
.TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft S of 18N, and
3 to 5 ft elsewhere.
.SUN...E winds 10 to 20 kt S of 18N, and E less than 10 kt
elsewhere. Seas 6 to 9 ft S of 18N, and 3 to 5 ft elsewhere.
.SUN NIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt
elsewhere. Seas 5 to 7 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 4 to 6 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.

Caribbean from 11N to 15N W of 72W

.TODAY...E winds 15 to 25 kt. Seas 6 to 9 ft.
.TONIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft.
.SUN...E winds 15 to 25 kt within 90 nm of coast of Colombia,
and E 10 to 20 kt elsewhere. Seas 7 to 10 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.MON...E winds 10 to 20 kt. Seas 6 to 8 ft.
.MON NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft.
.TUE...E winds 10 to 20 kt. Seas 6 to 9 ft.
.TUE NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.WED...E winds 10 to 20 kt. Seas 7 to 10 ft.
.WED NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft.

SW Caribbean S of 11N

.TODAY...E winds 10 to 15 kt, shifting to S in the afternoon.
Seas 5 to 7 ft.
.TONIGHT...NW winds less than 10 kt. Seas 5 to 7 ft.
.SUN...SW winds less than 10 kt. Seas 5 to 7 ft.
.SUN NIGHT...Variable winds less than 10 kt, becoming NE less
than 10 kt after midnight. Seas 5 to 7 ft.
.MON...NE winds less than 10 kt. Seas 5 to 7 ft.
.MON NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.TUE...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.TUE NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.WED...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.WED NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft.

Caribbean between 64W and 72W

.TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft Gulf of Venezuela,
and 6 to 9 ft elsewhere.
.TONIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 6 to 8 ft.
.SUN...E winds 10 to 20 kt. Seas 5 to 7 ft.
.SUN NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. Seas 4 to 6 ft.
.MON...E winds 10 to 15 kt. Seas 4 to 6 ft.
.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 5 to 7 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.

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

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

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

.TODAY...E winds 10 to 15 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN...E winds less than 10 kt. Seas 3 to 5 ft.
.SUN NIGHT...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 4 to 6 ft.
.TUE...E winds 10 to 15 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 5 to 7 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...The Bermuda and Azores Highs extends a ridge west-
southwestward into central Florida this morning. The ridge will
shift eastward and weaken Sat night through Mon, then reorganize
and strengthen modestly along 60W Tue and Wed. The associated
pressure gradient will support gentle to moderate winds, except
for fresh to locally strong E to SE winds off the northern coast
of Hispaniola through Sat. Active thunderstorms are expected
across the NW zones through Tue as an upper level trough shifts
slowly offshore of the SE U.S. coast.

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

.TODAY...SW winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 5 ft.
.TONIGHT...S 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 4 ft.
.MON...S winds less than 10 kt. Seas 3 ft.
.MON NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE...S winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.WED...SE winds 10 to 15 kt. Seas 4 to 5 ft.
.WED NIGHT...SE winds 10 to 15 kt. Seas 4 to 5 ft.

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

.TODAY...S winds 10 kt W of 70W, and Variable less than 10 kt
elsewhere. Seas 3 to 4 ft.
.TONIGHT...Variable winds less than 10 kt, becoming SE less than
10 kt after midnight. Seas 3 to 4 ft.
.SUN...S winds less than 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft.
.MON...S winds 10 kt. Seas 3 to 4 ft.
.MON NIGHT...S winds 10 kt. Seas 3 to 4 ft.
.TUE...SE winds 10 to 15 kt. Seas 3 to 4 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 5 ft.

Bahamas N of 22N

.TODAY...SE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft.
.TONIGHT...E winds less than 10 kt. Seas 3 ft.
.SUN...E winds less than 10 kt. Seas 2 ft or less.
.SUN NIGHT...SE winds less than 10 kt. Seas 2 ft or less.
.MON...SE winds less than 10 kt. Seas 2 ft or less.
.MON NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less.
.TUE...SE winds 10 to 15 kt. Seas 3 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.WED...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.

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

.TODAY...E winds less than 10 kt. Seas 4 to 5 ft.
.TONIGHT...Variable winds less than 10 kt, becoming E less than
10 kt after midnight. Seas 3 to 4 ft.
.SUN...Variable winds less than 10 kt W of 70W, and SE less than
10 kt elsewhere. Seas 3 to 4 ft.
.SUN NIGHT...Variable winds less than 10 kt, becoming SE 10 kt
after midnight. Seas 3 ft.
.MON...SE winds 10 kt. Seas 3 to 4 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...SE winds 10 to 15 kt. Seas 3 to 5 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 5 to 7 ft.

ATLC waters S of 22N W of 65W

.TODAY...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 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 5 ft.
.TUE...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.WED...E winds 10 to 20 kt. Seas 5 to 7 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.

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

.TODAY...E winds 10 kt. Seas 4 to 5 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.SUN...E winds 10 to 15 kt. Seas 4 to 5 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 5 to 6 ft.
.TUE...E winds 15 kt. Seas 5 to 6 ft.
.TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.WED...E winds 10 to 20 kt. Seas 6 to 7 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.