688
FZNT31 KNHC 172044
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
444 PM EDT Fri Oct 17 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...Gentle to moderate winds and slight seas are
expected over the Caribbean Sea through Sat. Moderate to fresh E
to NE winds and moderate seas will develop over the eastern
Caribbean Sat night and extend into the central basin on Sun as a
tropical wave moves westward over the region. A second, stronger
tropical wave is slated to move through the central Atlantic
this weekend, entering the eastern Caribbean early next week.
Fresh to strong winds and rough seas will accompany the wave as
it passes over the waters east of the Leeward Islands on Sun,
with increasing winds and building seas developing in the eastern
basin Sun night into early next week. This system has a low
chance of tropical development within the next 48 hours and next
7 days. Regardless of development, this system is expected to
bring heavy rainfall and gusty winds to the Windward Islands late
this weekend and then move across the Caribbean Sea much of next
week.

NW Caribbean W of 85W

.TONIGHT...E winds less than 10 kt. Seas 2 ft or less.
.SAT...SE winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...SE winds less than 10 kt. Seas 2 ft or less,
building to 3 ft after midnight.
.SUN...E winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less.
.SUN NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.MON...NE winds less than 10 kt. Seas 2 ft or less.
.MON NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.TUE...NE winds less than 10 kt. Seas 2 ft or less.
.TUE NIGHT...NE winds less than 10 kt. Seas 2 ft or less.
.WED...NE winds less than 10 kt. Seas 2 ft or less.
.WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft.

Caribbean N of 15N between 72W and 85W

.TONIGHT...E winds less than 10 kt. Seas 2 ft or less.
.SAT...E winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 ft or less.
.SUN...E winds 10 to 20 kt. Seas 3 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.MON...E winds 10 to 20 kt. Seas 3 to 5 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.TUE...E winds 10 to 20 kt. Seas 4 to 6 ft.
.TUE NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft.
.WED...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft.

Caribbean from 11N to 15N W of 72W

.TONIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.SAT...Within 90 nm of coast of Colombia, E winds 10 kt.
Elsewhere, Variable winds less than 10 kt, becoming E less than
10 kt in the afternoon. Seas 2 ft or less.
.SAT NIGHT...Within 90 nm of coast of Colombia, E winds 10 to
20 kt. Elsewhere, E winds less than 10 kt, increasing to 10 to
20 kt after midnight. Seas 2 ft or less, building to 3 ft after
midnight.
.SUN...E winds 15 to 25 kt. Seas 3 to 5 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 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 3 to 5 ft.
.WED...E winds less than 10 kt. Seas 3 to 5 ft.
.WED NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft.

SW Caribbean S of 11N

.TONIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.SAT...Variable winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...Variable winds less than 10 kt, becoming E less
than 10 kt after midnight. Seas 2 ft or less.
.SUN...Variable winds less than 10 kt. Seas 2 ft or less.
.SUN NIGHT...Variable winds less than 10 kt. Seas 2 ft or less.
.MON...Variable winds less than 10 kt, becoming W less than
10 kt in the afternoon. Seas 3 ft.
.MON NIGHT...W winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 3 ft.
.TUE...Variable winds less than 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...Variable winds less than 10 kt, becoming SW less
than 10 kt after midnight. Seas 3 ft.
.WED...W winds less than 10 kt. Seas 3 ft.
.WED NIGHT...W winds less than 10 kt. Seas 3 ft.

Caribbean between 64W and 72W

.TONIGHT...Gulf of Venezuela, Variable winds less than 10 kt.
Elsewhere, SE winds less than 10 kt, shifting to E after
midnight. Seas 2 ft or less Gulf of Venezuela, and 3 to 4 ft
elsewhere.
.SAT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela,
and 3 to 4 ft elsewhere.
.SAT NIGHT...E winds 10 to 20 kt. Gulf of Venezuela, seas 2 ft
or less, building to 3 ft after midnight. Elsewhere, seas 3 to
5 ft.
.SUN...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela,
and 4 to 6 ft elsewhere.
.SUN NIGHT...E winds 15 to 25 kt. Seas 5 to 8 ft.
.MON...E winds 10 to 20 kt. Seas 5 to 8 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 5 to 8 ft.
.TUE...E winds 10 to 20 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 4 to 6 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.

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

.TONIGHT...SE winds less than 10 kt. Seas 4 to 6 ft.
.SAT...E winds less than 10 kt. Seas 3 to 5 ft.
.SAT NIGHT...E winds 15 to 25 kt. Seas 4 to 6 ft.
.SUN...E winds 15 to 25 kt. Seas 6 to 9 ft.
.SUN NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft.
.MON...E winds 10 to 20 kt. Seas 8 to 11 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft.
.TUE...E winds 10 to 15 kt. Seas 6 to 9 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft.
.WED...E winds 10 to 15 kt. Seas 5 to 7 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.

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

.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT NIGHT...E winds 15 to 25 kt. Seas 5 to 7 ft.
.SUN...E winds 15 to 25 kt. Seas 6 to 8 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.MON...E winds 10 to 15 kt. Seas 6 to 9 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft.
.TUE...E winds 10 to 15 kt. Seas 6 to 9 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 10 to 15 kt. Seas 4 to 6 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Fresh to strong SW winds, with localized near-gale
force winds, will occur over the central Atlantic north of 20N
and east of 60W through Sat morning as a cold front slowly
migrates eastward. A second cold front, extending from 31N56W
southwestward through the central Bahamas, will propagate
eastward through this weekend, and fresh to strong N to NW winds
will occur in the wake of the front north of 25N and east of 75W
through Sun morning. Widespread rough seas associated with the
first cold front will prevail north of 20N and east of 60W today,
and will be reinforced by a new N to NW swell through this
weekend, leading to rough seas north of 20N and east of 77W. Very
rough seas over 12 ft can be expected east of 72W and north of
25N today through Sun. Rough seas will slowly subside from west
to east Sun into next week. Elsewhere, a tropical wave is located
over the central tropical Atlantic along 43.5W. Gradual
development of this system is possible over the next several days
while it moves generally westward. Regardless of development,
this system will lead to increasing winds and building seas along
its path. This system has a low chance of tropical development
within the next 48 hours and next 7 days.

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

.TONIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.SAT...NE winds 10 kt in the morning, becoming variable winds
less than 10 kt. Seas 6 to 7 ft.
.SAT NIGHT...SE winds less than 10 kt. Seas 6 to 8 ft.
.SUN...S winds 10 to 15 kt. Seas 6 to 8 ft.
.SUN NIGHT...S winds 10 to 15 kt. Seas 6 to 7 ft.
.MON...W winds 10 to 15 kt, shifting to N in the afternoon. Seas
5 to 6 ft.
.MON NIGHT...E winds less than 10 kt. Seas 4 to 6 ft.
.TUE...Variable winds less than 10 kt. Seas 3 to 5 ft.
.TUE NIGHT...S winds less than 10 kt, shifting to SW after
midnight. Seas 3 to 4 ft.
.WED...NW winds 10 to 15 kt. Seas 3 to 5 ft.
.WED NIGHT...N winds 10 kt. Seas 3 to 5 ft.

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

.TONIGHT...N winds 10 to 20 kt W of 70W, and NW 15 to 25 kt
elsewhere. Seas 8 to 12 ft W of 70W, and 10 to 17 ft elsewhere.
.SAT...N winds 10 to 15 kt. Seas 8 to 12 ft W of 70W, and 11 to
17 ft elsewhere.
.SAT NIGHT...E winds less than 10 kt W of 70W, and N 10 to 15 kt
elsewhere. Seas 8 to 12 ft W of 70W, and 11 to 14 ft elsewhere.
.SUN...Variable winds less than 10 kt, becoming E less than
10 kt in the afternoon. Seas 8 to 11 ft.
.SUN NIGHT...Variable winds less than 10 kt, becoming SE less
than 10 kt after midnight. Seas 6 to 9 ft.
.MON...S winds less than 10 kt. Seas 5 to 7 ft.
.MON NIGHT...Variable winds less than 10 kt, becoming SE less
than 10 kt after midnight. Seas 4 to 6 ft.
.TUE...SE winds less than 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...SE winds 10 kt. Seas 4 to 5 ft.
.WED...S winds less than 10 kt. Seas 4 to 6 ft.
.WED NIGHT...SW winds less than 10 kt, shifting to NW after
midnight. Seas 4 to 6 ft.

Bahamas N of 22N

.TONIGHT...NE winds 10 to 15 kt. Seas 4 to 7 ft.
.SAT...E winds 10 to 15 kt. Seas 4 to 7 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 8 ft.
.SUN...E winds 10 to 15 kt. Seas 5 to 8 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 7 ft.
.MON...E winds less than 10 kt. Seas 3 to 5 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 3 to 5 ft.
.WED...NE winds less than 10 kt. Seas 3 to 4 ft.
.WED NIGHT...NE winds 10 to 15 kt. Seas 3 ft.

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

.TONIGHT...N winds 10 to 15 kt. Seas 7 to 10 ft.
.SAT...N winds 10 to 15 kt. Seas 7 to 10 ft.
.SAT NIGHT...NE winds less than 10 kt. Seas 8 to 11 ft.
.SUN...E winds less than 10 kt. Seas 8 to 10 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 7 to 9 ft.
.MON...E winds 10 to 15 kt. Seas 6 to 8 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.TUE...E winds 10 to 15 kt. Seas 5 to 7 ft.
.TUE NIGHT...E winds 10 kt. Seas 4 to 6 ft.
.WED...E winds 10 kt. Seas 4 to 6 ft.
.WED NIGHT...E winds less than 10 kt. Seas 4 to 6 ft.

ATLC waters S of 22N W of 65W

.TONIGHT...N winds less than 10 kt. Seas 3 to 5 ft.
.SAT...E winds less than 10 kt. Seas 4 to 6 ft.
.SAT NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 5 to 9 ft.
.SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 6 to 9 ft.
.SUN NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 5 to 7 ft.
.MON...E winds 10 to 15 kt. Seas 5 to 8 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 4 to 6 ft.

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

.TONIGHT...SW winds 10 to 20 kt. Seas 6 to 9 ft.
.SAT...SW winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 5 to 7 ft.
.SAT NIGHT...SE winds less than 10 kt. Seas 5 to 8 ft.
.SUN...E winds less than 10 kt. Seas 6 to 9 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 8 to 10 ft.
.MON...E winds 10 to 15 kt. Seas 8 to 10 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 7 to 9 ft.
.TUE...E winds 10 to 15 kt. Seas 7 to 8 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft.
.WED...E winds 10 to 15 kt. Seas 6 to 7 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft.