782
FZNT31 KNHC 121406
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1006 AM EDT Wed Mar 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...An old frontal boundary from Haiti and just south of
the Windward Passage to the NW coast of Jamaica to the Gulf of
Honduras will dissipate today. Moderate to fresh N to NE winds
and moderate seas will prevail north of the front through early
this afternoon. Otherwise, weak high pressure north of the area
will support pulsing fresh to strong trades off northern
Colombia through the next several days, while moderate to fresh
NE to E winds pulse near the Windward Passage and offshore of
the Dominican Republic. Similar winds will pulse off eastern
Honduras, becoming fresh to strong Fri night through early Sun.
Mainly moderate or weaker winds will prevail elsewhere, locally
fresh in the eastern Caribbean. A cold front may approach the
Yucatan Channel late in the weekend into early next week.
Meanwhile, moderate northerly swell will impact Atlantic
passages through Thu night, with a larger NE swell arriving late
in the weekend.

NW Caribbean W of 85W

.THIS AFTERNOON...E winds less than 10 kt. Seas 3 to 5 ft.
.TONIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft.
.THU...SE winds 10 to 15 kt. Seas 3 ft.
.THU NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.SAT...SE winds 15 to 25 kt. Seas 5 to 7 ft.
.SAT NIGHT...SE winds 15 to 25 kt. Seas 5 to 7 ft.
.SUN...SE winds 15 to 25 kt. Seas 5 to 7 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.

Caribbean N of 15N between 72W and 85W

.THIS AFTERNOON...E winds less than 10 kt S of 18N, and NE 10 to
15 kt elsewhere. Seas 3 ft, subsiding to 2 ft or less.
.TONIGHT...E winds less than 10 kt. Seas 2 ft or less.
.THU...S of 18N, E winds 10 to 15 kt. Elsewhere, E winds 10 to
15 kt, diminishing to less than 10 kt in the afternoon. Seas
2 ft or less.
.THU NIGHT...S of 18N, E winds less than 10 kt, increasing to
10 to 15 kt after midnight. Elsewhere, SE winds less than 10 kt.
Seas 2 ft or less.
.FRI...E winds less than 10 kt. Seas 2 ft or less.
.FRI NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less.
.SAT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.SUN...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.

Caribbean from 11N to 15N W of 72W

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...NE winds 10 to 20 kt within 90 nm of coast of
Colombia, and NE 10 to 15 kt elsewhere. Seas 3 to 5 ft.
.THU...E winds 10 to 20 kt within 90 nm of coast of Colombia,
and E 10 to 15 kt elsewhere. Seas 3 to 5 ft.
.THU NIGHT...NE winds 15 to 20 kt within 90 nm of coast of
Colombia, and NE 10 to 15 kt elsewhere. Seas 3 to 5 ft.
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.

SW Caribbean S of 11N

.THIS AFTERNOON...NE winds 10 to 15 kt, diminishing to less than
10 kt in the afternoon. Seas 3 to 5 ft.
.TONIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft.
.THU...N winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...NE winds 10 to 15 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...NE winds 10 to 15 kt, diminishing to less than
10 kt after midnight. Seas 3 to 5 ft.
.SUN...NE winds less than 10 kt. Seas 3 to 5 ft.
.SUN NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft.

Caribbean between 64W and 72W

.THIS AFTERNOON...Gulf of Venezuela, E winds 10 to 20 kt.
Elsewhere, E winds 10 to 15 kt, diminishing to less than 10 kt
in the afternoon. Seas 3 to 4 ft.
.TONIGHT...NE winds 10 to 20 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. Seas 3 to 4 ft.
.THU...NE winds 10 to 20 kt Gulf of Venezuela, and E 10 to 15 kt
elsewhere. Seas 3 to 4 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 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 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.

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

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...E winds less than 10 kt. Seas 4 to 6 ft.
.THU...E winds less than 10 kt. Seas 3 to 5 ft.
.THU NIGHT...E winds less than 10 kt. Seas 4 to 6 ft.
.FRI...E winds less than 10 kt. Seas 4 to 6 ft.
.FRI NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 4 to 6 ft.
.SAT...E 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 less than 10 kt. Seas 4 to 6 ft.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft.

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

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.THU...E winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 4 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 6 ft.
.SAT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A cold front extends from near 31N58W to the north
coast of the Dominican Republic. Gale force SW wind and rough
continue along the front north of 27N, while strong NW to W
winds and very rough seas prevail behind the front north of 25N.
Strong thunderstorms are north of 21N within 180 nm ahead of the
front. The front will reach from 31N54W to near Puerto Rico this
evening with gale force winds diminishing south of 31N. The
southern portion of the front will then become stationary across
the coastal waters of Puerto Rico by Fri morning then dissipate.
Large NW to W swell behind the front will shift eastward through
Thu. Winds and seas will diminish and subside from west to east
through Fri as high pressure builds over the western Atlantic in
the wake of the front. Winds are forecast to increase north of
22N this weekend as the pressure gradient tightens. These winds
will support building seas across most of the basin.

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

.THIS AFTERNOON...NW winds less than 10 kt, becoming variable
winds less than 10 kt. Seas 6 to 8 ft.
.TONIGHT...S winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 4 to 6 ft.
.THU...S winds 10 to 15 kt. Seas 3 to 4 ft.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...SE winds less than 10 kt. Seas 3 ft.
.FRI NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft.
.SAT...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.SAT NIGHT...SE winds 15 to 25 kt. Seas 6 to 8 ft.
.SUN...S winds 15 to 25 kt. Seas 6 to 9 ft.
.SUN NIGHT...S winds 15 to 25 kt. Seas 6 to 9 ft.

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

...GALE WARNING...

.THIS AFTERNOON...N winds 10 to 20 kt W of 70W, and NW 15 to
25 kt elsewhere, except SW 25 to 35 kt ahead of front. W of 70W,
seas 9 to 14 ft, subsiding to 8 to 11 ft in the afternoon.
Elsewhere, seas 12 to 16 ft.
.TONIGHT...W of 70W, N winds less than 10 kt in the evening,
becoming variable winds less than 10 kt, seas 6 to 9 ft.
Elsewhere, N winds 10 to 20 kt, seas 9 to 14 ft, subsiding to
8 to 11 ft after midnight.
.THU...SE winds less than 10 kt. Seas 4 to 6 ft W of 70W, and
7 to 10 ft elsewhere.
.THU NIGHT...SE winds 10 kt. Seas 4 to 6 ft.
.FRI...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT...SE winds 10 to 20 kt. Seas 5 to 7 ft.
.SAT NIGHT...SE winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN...SE winds 15 to 20 kt. Seas 6 to 9 ft.
.SUN NIGHT...SE winds 10 to 20 kt. Seas 7 to 9 ft.

Bahamas N of 22N

.THIS AFTERNOON...NE winds less than 10 kt. Seas 4 to 6 ft.
.TONIGHT...E winds less than 10 kt. Seas 3 to 5 ft.
.THU...SE winds less than 10 kt. Seas 3 to 4 ft.
.THU NIGHT...SE winds less than 10 kt. Seas 3 ft.
.FRI...SE winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less.
.FRI NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less, building to 3 ft after
midnight.
.SAT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.SUN...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.SUN NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.

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

.THIS AFTERNOON...NW winds 10 to 20 kt. Seas 9 to 14 ft.
.TONIGHT...N winds 10 to 15 kt. Seas 8 to 13 ft, subsiding to
7 to 10 ft after midnight.
.THU...E winds less than 10 kt W of 70W, and NE 10 to 15 kt
elsewhere. Seas 5 to 7 ft W of 70W, and 7 to 10 ft elsewhere.
.THU NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SAT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.SAT NIGHT...E winds 15 to 20 kt. Seas 6 to 9 ft.
.SUN...E winds 15 to 20 kt. Seas 7 to 10 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft.

ATLC waters S of 22N W of 65W

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

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

.THIS AFTERNOON...S winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...SW winds less than 10 kt. Seas 5 to 7 ft.
.THU...W winds less than 10 kt. Seas 6 to 8 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.FRI...E winds 10 to 15 kt. Seas 6 to 7 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SAT...E winds 10 to 15 kt. Seas 6 to 8 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft.
.SUN...E winds 10 to 15 kt. Seas 7 to 8 ft.
.SUN NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft.