240
FZNT31 KNHC 310841
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
341 AM EST Fri Jan 31 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...Pulsing gale force winds will occur offshore of
Colombia each night and morning through the middle of next week
as a tight pressure gradient prevails between low pressure over
Colombia and high pressure in the western Atlantic. Widespread
moderate to fresh trades are expected across much of the
Caribbean, with winds pulsing to strong speeds across the central
basin, through the Windward Passage, downwind of Hispaniola and
in the lee of Cuba. Rough seas will occur across the central and
southwestern Caribbean, with localized very rough seas near the
strongest winds. Elsewhere, residual E swell in the tropical
Atlantic waters will combine with a new N swell this weekend,
promoting locally rough seas east of the Windward and Leeward
Islands and their passages into the Caribbean through the middle
of next week. Moderate seas will prevail across the remainder of
the basin.

NW Caribbean W of 85W

.TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.SAT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...NE 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 15 kt. Seas 3 to 4 ft.
.MON...E winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...E winds 10 to 20 kt. Seas 3 to 5 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.

Caribbean N of 15N between 72W and 85W

.TODAY...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt
elsewhere. Seas 6 to 9 ft S of 18N, and 5 to 7 ft elsewhere.
.TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft S of 18N, and
3 to 5 ft elsewhere.
.SAT...E winds 10 to 20 kt. Seas 6 to 8 ft S of 18N, and 3 to
5 ft elsewhere.
.SAT NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft S of 18N, and
3 to 5 ft elsewhere.
.SUN...E winds 10 to 20 kt. Seas 5 to 7 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.MON...E winds 10 to 20 kt. Seas 5 to 7 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 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.

Caribbean from 11N to 15N W of 72W

...GALE WARNING...
...GALE CONDITIONS POSSIBLE THIS WEEKEND INTO NEXT WEEK...

.TODAY...E winds 20 to 30 kt. Seas 8 to 13 ft.
.TONIGHT...E winds 25 to 35 kt within 90 nm of coast of
Colombia, and NE 15 to 25 kt elsewhere. Seas 8 to 12 ft.
.SAT...E winds 20 to 30 kt within 90 nm of coast of Colombia,
and NE 15 to 25 kt elsewhere. Seas 8 to 12 ft.
.SAT NIGHT...E winds 25 to 40 kt within 90 nm of coast of
Colombia, and NE 20 to 25 kt elsewhere. Seas 8 to 11 ft.
.SUN...NE winds 20 to 30 kt. Seas 8 to 11 ft.
.SUN NIGHT...NE winds 20 to 30 kt. Seas 8 to 11 ft.
.MON...NE winds 20 to 30 kt. Seas 8 to 11 ft.
.MON NIGHT...NE winds 20 to 30 kt. Seas 7 to 10 ft.
.TUE...E winds 20 to 30 kt. Seas 7 to 10 ft.
.TUE NIGHT...NE winds 20 to 30 kt. Seas 8 to 11 ft.

SW Caribbean S of 11N

.TODAY...NE winds 10 to 20 kt. Seas 8 to 11 ft.
.TONIGHT...NE winds 10 to 20 kt. Seas 8 to 11 ft.
.SAT...NE winds 10 to 20 kt. Seas 8 to 11 ft.
.SAT NIGHT...NE winds 10 to 20 kt. Seas 8 to 11 ft.
.SUN...NE winds 10 to 20 kt. Seas 8 to 11 ft.
.SUN NIGHT...NE winds 15 to 25 kt. Seas 8 to 11 ft.
.MON...NE winds 10 to 20 kt. Seas 8 to 11 ft.
.MON NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft.
.TUE...NE winds 10 to 20 kt. Seas 7 to 10 ft.
.TUE NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft.

Caribbean between 64W and 72W

.TODAY...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft
elsewhere.
.TONIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 9 ft
elsewhere.
.SAT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt
elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft
elsewhere.
.SAT NIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft
elsewhere.
.SUN...E winds 10 to 20 kt. Seas 6 to 8 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.MON...E winds 10 to 20 kt. Seas 6 to 8 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.TUE...E winds 10 to 20 kt. Seas 6 to 8 ft.
.TUE 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.
.SAT...E winds 10 to 20 kt. Seas 7 to 10 ft.
.SAT NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft.
.SUN...E winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft.
.MON...E winds 10 to 20 kt. Seas 7 to 10 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 9 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.
.SAT...E winds 10 to 20 kt. Seas 7 to 10 ft.
.SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN...E winds 10 to 15 kt. Seas 6 to 9 ft.
.SUN NIGHT...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 7 to 10 ft.
.TUE...E winds 10 to 15 kt. Seas 6 to 9 ft.
.TUE NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Building high pressure over the western Atlantic
will support increasing moderate to fresh E to NE winds and
building seas north of 20N today. A tightening pressure gradient
between the aforementioned ridge and low pressure moving eastward
through the United States will lead to fresh to strong S to SW
winds offshore of Florida, generally north of 28N and west of
65W, this afternoon through Sat morning. Winds will diminish by
Sat afternoon in this region as the low moves offshore and lifts
to the northeast. Elsewhere, fresh to strong E winds and rough
seas will continue south of 22N through the beginning of next
week. Looking ahead, gentle to moderate winds and moderate seas
are forecast for the waters north of 22N for Sun into early next
week.

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

.TODAY...S winds 10 to 20 kt. Seas 4 to 5 ft.
.TONIGHT...S winds 15 to 25 kt. Seas 5 to 7 ft.
.SAT...W winds 10 to 20 kt, becoming N less than 10 kt in the
afternoon. Seas 5 to 7 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN...E winds 10 kt. Seas 4 to 5 ft.
.SUN NIGHT...SE winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 4 to 5 ft.
.MON...Variable winds less than 10 kt. Seas 4 to 5 ft.
.MON NIGHT...Variable winds less than 10 kt. Seas 4 to 5 ft.
.TUE...Variable winds less than 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...Variable winds less than 10 kt, becoming SE less
than 10 kt after midnight. Seas 4 to 5 ft.

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

.TODAY...SE winds 10 to 15 kt. Seas 6 to 8 ft.
.TONIGHT...S winds 10 to 20 kt. Seas 6 to 8 ft.
.SAT...SW winds 10 to 20 kt. Seas 5 to 7 ft.
.SAT NIGHT...W of 70W, N winds less than 10 kt, shifting to NE
after midnight. Elsewhere, NW winds less than 10 kt. Seas 5 to
6 ft.
.SUN...E winds 10 to 15 kt. Seas 5 to 6 ft.
.SUN NIGHT...E winds 10 to 15 kt, diminishing to less than 10 kt
after midnight. Seas 5 to 7 ft.
.MON...E winds less than 10 kt. Seas 5 to 6 ft.
.MON NIGHT...E winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 5 to 6 ft.
.TUE...Variable winds less than 10 kt. Seas 5 to 6 ft.
.TUE NIGHT...Variable winds less than 10 kt, becoming NE less
than 10 kt after midnight. Seas 4 to 5 ft.

Bahamas N of 22N

.TODAY...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.TONIGHT...SE 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 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 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 3 to 5 ft.

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

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

ATLC waters S of 22N W of 65W

.TODAY...E winds 10 to 20 kt. Seas 6 to 9 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.SAT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.SUN...E winds 10 to 20 kt. Seas 6 to 8 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.MON...E winds 10 to 20 kt. Seas 6 to 8 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 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.

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

.TODAY...E winds 15 to 20 kt. Seas 6 to 8 ft.
.TONIGHT...E winds 15 to 20 kt. Seas 7 to 9 ft.
.SAT...E winds 15 to 20 kt. Seas 8 to 11 ft.
.SAT NIGHT...E winds 15 to 20 kt. Seas 8 to 11 ft.
.SUN...E winds 10 to 20 kt. Seas 9 to 10 ft.
.SUN NIGHT...E winds 15 to 20 kt. Seas 8 to 9 ft.
.MON...E winds 15 to 20 kt. Seas 8 to 9 ft.
.MON NIGHT...E winds 15 kt. Seas 7 to 8 ft.
.TUE...E winds 10 to 15 kt. Seas 7 to 8 ft.
.TUE NIGHT...E winds 15 kt. Seas 7 to 8 ft.