861
FZNT31 KNHC 070921
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
421 AM EST Sun Dec 7 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...Broad high pressure north of the islands will
support moderate to fresh easterly trade winds and moderate seas
over the central and eastern Caribbean through at least the
middle of next week. Strong winds off NW Colombia, along with
locally rough seas, will diminish this morning. Moderate or
lighter winds and slight to moderate seas will prevail
elsewhere. A persistent E-NE swell will support rough seas
across the Atlantic waters and passages of the Lesser Antilles
through next Thu. Looking ahead, a weakening cold front will
approach the northwestern Caribbean on Tue and linger across the
Yucatan Channel and Straits of Florida through Wed. High
pressure will build across the eastern Gulf of America by the
middle of next week, leading to strong winds and rough seas in
the south-entral Caribbean into late next week.

NW Caribbean W of 85W

.TODAY...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.MON...SE winds less than 10 kt. Seas 3 to 4 ft.
.MON NIGHT...E winds less than 10 kt. Seas 3 to 4 ft.
.TUE...Variable winds less than 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft.
.WED...Variable winds less than 10 kt. Seas 3 to 5 ft.
.WED NIGHT...E winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 3 to 4 ft.
.THU...E winds less than 10 kt. Seas 3 ft.
.THU NIGHT...E winds less than 10 kt. Seas 3 ft.

Caribbean N of 15N between 72W and 85W

.TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 10 to 15 kt S of 18N, and SE less than 10 kt
elsewhere. Seas 4 to 6 ft.
.MON...E winds 10 to 15 kt S of 18N, and SE less than 10 kt
elsewhere. Seas 3 to 5 ft.
.MON NIGHT...E winds 10 to 15 kt S of 18N, and NE less than
10 kt elsewhere. S of 18N, seas 3 to 5 ft. Elsewhere, seas 3 to
4 ft in the evening, subsiding to 2 ft or less.
.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 4 to 6 ft.
.THU...E winds 10 to 15 kt. Seas 4 to 6 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.

Caribbean from 11N to 15N W of 72W

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

SW Caribbean S of 11N

.TODAY...E winds less than 10 kt in the morning, becoming
variable winds less than 10 kt. Seas 4 to 6 ft.
.TONIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft.
.MON...Variable winds less than 10 kt, becoming NW less than
10 kt in the afternoon. Seas 3 to 5 ft.
.MON NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft.
.TUE...N winds less than 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...N winds less than 10 kt. Seas 3 to 5 ft.
.WED...NE winds less than 10 kt. Seas 4 to 6 ft.
.WED NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.THU...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft.

Caribbean between 64W and 72W

.TODAY...E winds 10 to 15 kt. Seas 3 to 4 ft Gulf of Venezuela,
and 5 to 7 ft elsewhere.
.TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.MON...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and
5 to 7 ft elsewhere.
.MON NIGHT...E winds 10 to 20 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. 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 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.
.THU...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.

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

.TODAY...E winds 10 to 20 kt. Seas 6 to 8 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.MON...E winds 10 to 20 kt. Seas 6 to 9 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 6 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 7 ft.
.WED...E winds 10 to 20 kt. Seas 6 to 8 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft.
.THU...E winds 10 to 20 kt. Seas 7 to 10 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft.

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

.TODAY...E winds 10 to 20 kt. Seas 6 to 9 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.MON...E winds 10 to 20 kt. Seas 6 to 9 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.TUE...E winds 10 to 20 kt. Seas 6 to 9 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...E winds 10 to 20 kt. Seas 7 to 10 ft.
.THU...E winds 10 to 20 kt. Seas 7 to 10 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A cold front extends from near Bermuda to near
Stuart, Florida. Fresh to locally strong winds and moderate to
rough seas are noted ahead of and behind the front. These winds
and seas will shift quickly eastward today with the front. The
weak front is expected to dissipate later today. Looking ahead,
a complex low pressure system and strong cold front will into
the northwestern tropical Atlantic tonight and Mon, supporting
widespread fresh to near gale-force winds and building seas ahead
of and behind the front Mon through Tue. The cold front will
reach from near Bermuda to the NW Bahamas and Straits of Florida
Tue morning, then gradually weaken and stall along about 26N
early Wed. Large N swell will move into the regional waters Tue
through Wed then diminish Wed night.

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

.TODAY...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft.
.MON...NW winds 10 to 20 kt. Seas 5 to 7 ft.
.MON NIGHT...N winds 15 to 20 kt. Seas 7 to 10 ft.
.TUE...N winds 10 to 20 kt. Seas 7 to 10 ft.
.TUE NIGHT...NE winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 7 to 9 ft.
.WED...Variable winds less than 10 kt, becoming SW less than
10 kt in the afternoon. Seas 6 to 7 ft.
.WED NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft.
.THU...W winds 10 to 15 kt. Seas 4 to 6 ft.
.THU NIGHT...W winds 10 kt. Seas 3 to 5 ft.

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

.TODAY...W of 70W, SE winds less than 10 kt. Elsewhere, W winds
10 to 15 kt, diminishing to less than 10 kt in the afternoon.
Seas 5 to 7 ft.
.TONIGHT...W of 70W, S winds 10 to 15 kt. Elsewhere, W winds
less than 10 kt, shifting to SW after midnight. Seas 5 to 6 ft.
.MON...SW winds 10 to 20 kt W of 70W, and SW 15 to 25 kt
elsewhere. Seas 6 to 9 ft.
.MON NIGHT...W winds 15 to 25 kt. Seas 7 to 10 ft.
.TUE...N winds 15 to 25 kt. Seas 8 to 11 ft.
.TUE NIGHT...NE winds 10 to 15 kt, shifting to E after midnight.
Seas 9 to 14 ft.
.WED...S winds less than 10 kt. Seas 8 to 11 ft.
.WED NIGHT...S winds less than 10 kt, shifting to SW after
midnight. Seas 6 to 9 ft.
.THU...SW winds 10 to 15 kt. Seas 5 to 7 ft.
.THU NIGHT...W winds 10 to 15 kt, diminishing to less than 10 kt
after midnight. Seas 5 to 7 ft.

Bahamas N of 22N

.TODAY...S winds less than 10 kt. Seas 3 to 4 ft.
.TONIGHT...S winds less than 10 kt. Seas 3 to 4 ft.
.MON...SW winds 10 to 15 kt. Seas 3 to 4 ft.
.MON NIGHT...NW winds 10 to 15 kt. Seas 3 ft.
.TUE...N 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 less than 10 kt in the morning, becoming variable
winds less than 10 kt. Seas 3 to 5 ft.
.WED NIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft.
.THU...Variable winds less than 10 kt. Seas 3 to 5 ft.
.THU NIGHT...Variable winds less than 10 kt, becoming NE less
than 10 kt after midnight. Seas 3 to 4 ft.

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

.TODAY...S winds less than 10 kt. Seas 4 to 6 ft.
.TONIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft.
.MON...S winds 10 to 15 kt. Seas 5 to 6 ft.
.MON NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE...NW winds 10 to 15 kt. Seas 5 to 7 ft.
.TUE NIGHT...NE winds 10 to 15 kt, shifting to E after midnight.
Seas 6 to 9 ft.
.WED...SE winds less than 10 kt. Seas 6 to 9 ft.
.WED NIGHT...SE winds 10 to 15 kt. Seas 7 to 9 ft.
.THU...S winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 6 to 8 ft.
.THU NIGHT...SE winds less than 10 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...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.MON...SE winds less than 10 kt. Seas 3 to 5 ft.
.MON NIGHT...SE winds less than 10 kt, shifting to S after
midnight. Seas 3 to 5 ft.
.TUE...SE 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 less than 10 kt, increasing to 10 to 15 kt in the
afternoon. 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 5 to 7 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.

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

.TODAY...E winds 10 to 15 kt. Seas 6 to 7 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft.
.MON...E winds 10 to 15 kt. Seas 6 to 8 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.TUE...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.WED...E winds 10 to 15 kt. Seas 5 to 7 ft.
.WED NIGHT...E winds 15 to 20 kt. Seas 6 to 9 ft.
.THU...E winds 10 to 20 kt. Seas 8 to 11 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft.