755
FZNT31 KNHC 120921
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
421 AM EST Wed Nov 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...A cold front has stalled from eastern Cuba to the N
coast of Honduras. Strong N to NE winds and very rough seas to
14 ft prevail NW of the front. The front will remain nearly
stationary over the NW Caribbean through Wed, then drift NW and
gradually dissipate Wed night through Fri. Winds and seas across
this area will gradually diminish through Thu night. A low level
trough along 81W will combine with the front to support the
development of showers and thunderstorms over the W Caribbean
waters and coastal zones, from the Yucatan Peninsula across
Central America to Panama, through at least Thu. Fresh to strong
winds and rough seas will prevail in the south-central Caribbean
through Thu morning. Weak high pressure will slide E-SE into the
W Atlantic along 27N-28N over the weekend.

NW Caribbean W of 85W

.TODAY...NE winds 10 to 20 kt. Seas 8 to 11 ft.
.TONIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.THU...NE winds 10 to 20 kt. Seas 6 to 8 ft.
.THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft.
.FRI...NE winds 10 to 15 kt. Seas 5 to 7 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT NIGHT...NE winds 10 to 15 kt, shifting to E after midnight.
Seas 4 to 6 ft.
.SUN...E winds less than 10 kt. Seas 3 to 5 ft.
.SUN NIGHT...E winds less than 10 kt. Seas 3 to 4 ft.

Caribbean N of 15N between 72W and 85W

.TODAY...E winds 10 to 20 kt S of 18N, and NE 15 to 25 kt
elsewhere. Seas 7 to 10 ft.
.TONIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft.
.THU...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.FRI...NE winds 10 to 20 kt. Seas 4 to 6 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT NIGHT...NE winds 10 to 15 kt, shifting to E after midnight.
Seas 3 to 5 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.

Caribbean from 11N to 15N W of 72W

.TODAY...E winds 15 to 25 kt. Seas 7 to 10 ft.
.TONIGHT...E winds 15 to 25 kt within 90 nm of coast of
Colombia, and NE 10 to 20 kt elsewhere. Seas 6 to 9 ft.
.THU...E winds 10 to 20 kt. Seas 6 to 9 ft.
.THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft.
.FRI...E winds 10 to 20 kt. Seas 5 to 7 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft.
.SAT...NE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 4 to 5 ft.
.SAT NIGHT...NE winds less than 10 kt. Seas 3 to 5 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.

SW Caribbean S of 11N

.TODAY...E winds 10 to 15 kt, shifting to N in the afternoon.
Seas 5 to 7 ft.
.TONIGHT...NE winds 10 to 15 kt. Seas 6 to 9 ft.
.THU...NE winds 10 to 15 kt. Seas 6 to 9 ft.
.THU NIGHT...N winds 10 to 15 kt, diminishing to less than 10 kt
after midnight. Seas 6 to 8 ft.
.FRI...NE winds 10 to 15 kt, shifting to N in the afternoon.
Seas 5 to 7 ft.
.FRI NIGHT...NW winds less than 10 kt. Seas 4 to 6 ft.
.SAT...NW winds less than 10 kt. Seas 3 to 5 ft.
.SAT NIGHT...N winds less than 10 kt. Seas 3 to 5 ft.
.SUN...N winds less than 10 kt in the morning, becoming variable
winds less than 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.

Caribbean between 64W and 72W

.TODAY...E winds 10 to 20 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 20 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 5 to 7 ft.
.THU...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 5 to 6 ft.
.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 4 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 10 to 15 kt. Seas 3 to 4 ft.
.SUN...E winds less than 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.

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

.TODAY...E winds 10 to 15 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.THU...E winds 10 to 15 kt. Seas 6 to 8 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft.
.FRI...SE winds less than 10 kt. Seas 5 to 7 ft.
.FRI NIGHT...E winds 10 kt. Seas 5 to 7 ft.
.SAT...SE winds 10 kt in the morning, becoming variable winds
less than 10 kt. Seas 4 to 6 ft.
.SAT NIGHT...E winds less than 10 kt. Seas 4 to 6 ft.
.SUN...E winds 10 kt. Seas 4 to 6 ft.
.SUN NIGHT...E winds 10 kt. Seas 4 to 6 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 5 to 7 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.
.FRI...E winds 10 to 15 kt. Seas 5 to 7 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SAT...E winds less than 10 kt. Seas 5 to 7 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 4 to 6 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A cold front extends from near 31N59W to 25N67W then
becomes stationary to eastern Cuba along 75W. The portion of the
front E of 67W will continue to move eastward and weaken quickly
today, while the remainder of the front will remain nearly
stationary and gradually weaken through Thu evening. Strong N to
NE winds prevail behind the front S of 25N, while fresh NW winds
are N of 25N between the front and 70W. Large NW swell dominates
the entire region behind the front producing very rough seas of
10 to 17 ft. High pressure across the NE Gulf of America will
extend a narrow ridge eastward behind the front as it moves
eastward through Thu. This will lead to winds quickly
diminishing behind the front N of 25N today, and slowly
diminishing winds S of 25N to the stationary front through Thu.
The large NW swell will propagate eastward of 55W on Thu.
Looking ahead, a reinforcing cold front will sweep eastward
across the N waters Thu night through Sat, with high pressure
sliding into the W Atlantic behind it.

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

.TODAY...NW winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft.
.THU...NW winds 10 to 15 kt. Seas 4 to 6 ft.
.THU NIGHT...N winds 10 kt. Seas 3 to 4 ft.
.FRI...NE winds 10 kt. Seas 3 to 4 ft.
.FRI NIGHT...NE winds 10 to 15 kt, diminishing to less than
10 kt after midnight. Seas 3 to 5 ft.
.SAT...NW winds less than 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...S winds less than 10 kt, becoming SW 10 to 20 kt
after midnight. Seas 3 to 4 ft.
.SUN...W winds 10 to 20 kt. Seas 5 to 7 ft.
.SUN NIGHT...W winds 10 to 20 kt. Seas 5 to 7 ft.

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

.TODAY...N winds 10 kt. Seas 7 to 10 ft W of 70W, and 10 to
14 ft elsewhere.
.TONIGHT...NW winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 6 to 8 ft W of 70W, and 8 to 11 ft
elsewhere.
.THU...NW winds 10 to 15 kt. Seas 6 to 9 ft.
.THU NIGHT...NW winds 10 to 15 kt. Seas 6 to 9 ft.
.FRI...N winds 10 to 15 kt. Seas 6 to 8 ft.
.FRI NIGHT...N winds 10 to 15 kt. Seas 6 to 9 ft.
.SAT...NW winds 10 to 15 kt. Seas 6 to 9 ft.
.SAT NIGHT...W winds 10 to 15 kt. Seas 6 to 9 ft.
.SUN...SW winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN NIGHT...SW winds 15 to 25 kt. Seas 7 to 10 ft.

Bahamas N of 22N

.TODAY...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.TONIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft.
.THU...NE winds 10 to 20 kt. Seas 4 to 6 ft.
.THU NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft.
.FRI...NE winds 10 to 20 kt. Seas 3 to 5 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt
after midnight. Seas 3 to 5 ft.
.SUN...E winds less than 10 kt. Seas 3 to 4 ft.
.SUN NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft.

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

.TODAY...NE winds 10 to 20 kt. Seas 8 to 12 ft.
.TONIGHT...NE winds 10 to 20 kt. Seas 8 to 11 ft.
.THU...NE winds 10 to 15 kt. Seas 6 to 9 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.FRI...N winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...N winds 10 to 15 kt. Seas 5 to 6 ft.
.SAT...N winds 10 to 15 kt. Seas 5 to 7 ft.
.SAT NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft.
.SUN...E winds less than 10 kt. Seas 5 to 7 ft.
.SUN 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 6 to 9 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 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.
.FRI...E winds less than 10 kt, shifting to NE in the afternoon.
Seas 5 to 7 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...NE winds 10 to 15 kt, diminishing to less than
10 kt after midnight. Seas 4 to 6 ft.
.SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 4 to 6 ft.
.SUN NIGHT...E winds less than 10 kt. Seas 4 to 6 ft.

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

.TODAY...E winds 10 to 15 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft.
.THU...E winds 10 kt. Seas 7 to 9 ft.
.THU NIGHT...E winds 10 kt. Seas 7 to 8 ft.
.FRI...SE winds 10 kt in the morning, becoming variable winds
less than 10 kt. Seas 6 to 8 ft.
.FRI NIGHT...Variable winds less than 10 kt. Seas 5 to 7 ft.
.SAT...SW winds less than 10 kt. Seas 5 to 7 ft.
.SAT NIGHT...Variable winds less than 10 kt. Seas 5 to 7 ft.
.SUN...Variable winds less than 10 kt. Seas 5 to 7 ft.
.SUN NIGHT...E winds 10 kt. Seas 6 to 7 ft.