509 
FZNT31 KNHC 132013
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
413 PM EDT Sun Apr 13 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...Fresh to strong trades and rough seas off Nicaragua
will continue today, then diminish on Mon. Fresh to strong winds
will develop in the lee of Cuba, the Windward Passage, and in
the lee of Hispaniola tonight through Tue as a high pressure
center shifts across the Atlantic waters N of the area.
Elsewhere, moderate to fresh trades in the south-central
Caribbean will increase to fresh to strong starting Mon and
expand in coverage through Tue night. 

NW Caribbean W of 85W

.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...E winds less than 10 kt. Seas 3 to 4 ft. 
.MON NIGHT...NE to E winds less than 10 kt. Seas 3 to 4 ft.
.TUE...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 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. 
.THU...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 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. 

Caribbean N of 15N between 72W and 85W

.TONIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.MON...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 4 to 6 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 4 to 6 ft. 
.WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.THU NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 

Caribbean from 11N to 15N W of 72W

.TONIGHT...NE winds 15 to 25 kt within 90 nm of coast of
Colombia, and NE 10 to 20 kt elsewhere. Seas 5 to 7 ft. 
.MON...E winds 20 to 25 kt within 90 nm of coast of Colombia,
and NE 10 to 20 kt elsewhere. Seas 6 to 8 ft. 
.MON NIGHT...E winds 20 to 30 kt within 90 nm of coast of
Colombia, and NE 15 to 25 kt elsewhere. Within 90 nm of coast of
Colombia, seas 6 to 8 ft, building to 8 to 11 ft late.
.TUE...E winds 20 to 30 kt within 90 nm of coast of Colombia,
and E 10 to 20 kt elsewhere. Seas 7 to 10 ft. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.WED...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.WED NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 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 6 to 8 ft. 
.FRI NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. 

SW Caribbean S of 11N

.TONIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. 
.MON...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.MON NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.TUE...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.TUE NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.WED...NE winds 10 to 20 kt. Seas 6 to 8 ft. 
.WED NIGHT...N winds 10 to 20 kt. Seas 6 to 8 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 6 to 8 ft. 
.FRI NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. 

Caribbean between 64W and 72W

.TONIGHT...NE winds 15 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 3 to 5 ft. 
.MON...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt
elsewhere. Seas 4 to 6 ft. 
.MON NIGHT...NE winds 20 to 30 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 4 to 6 ft. 
.TUE...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt
elsewhere. Seas 5 to 7 ft. 
.TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.WED...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 

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

.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.MON...E winds 10 to 15 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 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. 
.THU...SE winds 10 to 15 kt. Seas 5 to 7 ft. 
.THU NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI NIGHT...E winds less than 10 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 3 to 5 ft. 
.MON...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 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 20 kt. Seas 4 to 6 ft. 
.THU...E winds 10 to 20 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. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A cold front extends from near 31N64W to 20N68W
while high pressure is building in behind it. Fresh to strong 
winds are east of the front north of about 25N along with 
moderate seas. The front will weaken as it reaches from near 
28N55W, then stationary to the eastern part of Hispaniola Mon 
night. The cold front portion will shift E of 55W Tue while the 
stationary portion weakens to a trough and shifts back to the W. 
The next cold front may enter the NW waters Tue night with 
moderate to fresh winds and moderate seas on either side of the 
front. That front will weaken over the central part of the area 
Thu, then become mostly stationary over the eastern part Fri and 
Fri night. The gradient between it and high pressure in its wake 
will develop fresh to strong northeast winds south of about 25N 
and west of 60W, including near and in the Windward Passage Fri 
and Fri night along with building seas east of the Bahamas.

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

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

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

.TONIGHT...NW winds 10 to 20 kt W of 70W, and NW 15 to 20 kt
elsewhere. Seas 6 to 8 ft. 
.MON...W of 70W, W to NW winds 10 to 15 kt. Elsewhere, NW winds 
10 to 20 kt. Seas 6 to 9 ft. 
.MON NIGHT...W of 70W, SW to W winds less than 10 kt. Elsewhere,
NW winds 10 to 15 kt. Seas 4 to 6 ft W of 70W, and 6 to 9 ft 
elsewhere. 
.TUE...W of 70W, SW winds 10 to 20 kt. Elsewhere, SW winds less
than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas
4 to 6 ft W of 70W, and 6 to 8 ft elsewhere. 
.TUE NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED...W winds 10 to 15 kt. Seas 5 to 7 ft. 
.WED NIGHT...NW winds 10 to 15 kt. Seas 5 to 7 ft. 
.THU...N winds 10 to 15 kt. Seas 4 to 6 ft. 
.THU NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.FRI NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. 

Bahamas N of 22N

.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE NIGHT...E winds less than 10 kt. Seas 2 to 4 ft. 
.WED...N winds less than 10 kt. Seas 2 to 4 ft. 
.WED NIGHT...NE winds less than 10 kt. Seas 2 to 4 ft. 
.THU...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.THU NIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft. 
.FRI...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 

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

.TONIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON...NE winds less than 10 kt W of 70W, and N 10 to 15 kt
elsewhere. Seas 4 to 6 ft. 
.MON NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...W of 70W, SE winds 10 to 15 kt. Elsewhere, E winds 10 to
15 kt. Seas 4 to 6 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED...SE winds less than 10 kt. Seas 3 to 5 ft. 
.WED NIGHT...E winds less than 10 kt. Seas 3 to 5 ft. 
.THU...NE winds less than 10 kt. Seas 3 to 5 ft. 
.THU NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.FRI NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. 

ATLC waters S of 22N W of 65W

.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.MON NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.TUE...E winds 10 to 20 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 3 to 5 ft. 
.THU...E 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 20 kt. Seas 5 to 7 ft. 

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

.TONIGHT...SE winds less than 10 kt. Seas 4 to 6 ft.
.MON...E winds less than 10 kt. Seas 4 to 5 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...SE winds 10 to 15 kt. Seas 5 to 7 ft. 
.THU...SE winds 10 to 15 kt. Seas 5 to 7 ft. 
.THU NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...E winds less than 10 kt. Seas 4 to 6 ft.