562 
FZNT31 KNHC 180219
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1019 PM EDT Thu Jul 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...Fresh to strong trade winds will prevail across the 
central Caribbean and Windward Passage tonight, with strong
winds expanding into the west-central basin through Fri as high
pressure strengthens in the central Atlantic. Periods of
near-gale force winds are likely in the Gulf of Venezuela and
offshore of northern Colombia nightly into this weekend. Rough
seas will occur over the central and southwestern Caribbean
through this weekend, with very rough seas expected near and
west of the strongest winds. Winds will diminish slightly on Sat
and Sun, with seas subsiding late Sun into next week. In the
Gulf of Honduras, pulsing fresh winds will occur each afternoon
and evening through Sat, with strong winds possible tonight.
Moderate to fresh trade winds and moderate seas will prevail
over the eastern basin into next week. 

NW Caribbean W of 85W

.OVERNIGHT...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 5 ft. 
.SAT...E winds 10 to 15 kt. Seas 4 to 6 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 less than 10 kt. Seas 3 to 4 ft.
.MON...E winds less than 10 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 ft. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 

Caribbean N of 15N between 72W and 85W

.OVERNIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft S of 18N, and
4 to 6 ft elsewhere. 
.FRI...E winds 15 to 25 kt S of 18N, and E 10 to 15 kt
elsewhere. Seas 6 to 9 ft S of 18N, and 4 to 6 ft elsewhere. 
.FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft S of 18N, and
4 to 6 ft elsewhere. 
.SAT...E winds 10 to 20 kt. Seas 6 to 9 ft S of 18N, and 4 to
6 ft elsewhere. 
.SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 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. 
.MON...E winds 10 to 15 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...E winds 10 to 20 kt. Seas 4 to 6 ft. 

Caribbean from 11N to 15N W of 72W

.OVERNIGHT...E winds 25 to 30 kt within 90 nm of coast of
Colombia, and E 15 to 25 kt elsewhere. Seas 8 to 11 ft. 
.FRI...E winds 20 to 30 kt within 90 nm of coast of Colombia,
and E 15 to 25 kt elsewhere. Seas 8 to 13 ft. 
.FRI NIGHT...E winds 20 to 30 kt within 90 nm of coast of
Colombia, and E 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 E 15 to 25 kt elsewhere. Seas 8 to 13 ft. 
.SAT NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. 
.SUN...E winds 10 to 20 kt. Seas 6 to 9 ft. 
.SUN NIGHT...NE 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 15 to 25 kt. Seas 6 to 9 ft. 
.TUE...E winds 15 to 25 kt. Seas 6 to 9 ft. 
.TUE NIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft. 

SW Caribbean S of 11N

.OVERNIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. 
.FRI...NE winds 10 to 15 kt. Seas 7 to 10 ft. 
.FRI NIGHT...NE winds 10 to 15 kt. Seas 7 to 10 ft. 
.SAT...E winds 10 to 20 kt. Seas 7 to 10 ft. 
.SAT NIGHT...N winds less than 10 kt. Seas 7 to 10 ft. 
.SUN...NE winds less than 10 kt. Seas 6 to 8 ft. 
.SUN NIGHT...NE winds less than 10 kt. Seas 5 to 7 ft. 
.MON...N winds less than 10 kt. Seas 4 to 6 ft. 
.MON NIGHT...N winds less than 10 kt, shifting to NE after
midnight. Seas 4 to 6 ft. 
.TUE...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.TUE NIGHT...N winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 5 to 7 ft. 

Caribbean between 64W and 72W

.OVERNIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 6 to 8 ft. 
.FRI...E winds 20 to 25 kt Gulf of Venezuela, and E 10 to 20 kt
elsewhere. Seas 6 to 8 ft. 
.FRI NIGHT...E winds 20 to 30 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 6 to 8 ft. 
.SAT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt
elsewhere. Seas 5 to 7 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.SUN...E winds 10 to 20 kt. Seas 4 to 6 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. 

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

.OVERNIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.FRI...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. 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. 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 4 to 6 ft. 
.SUN NIGHT...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. 

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

.OVERNIGHT...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 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 4 to 6 ft. 
.SUN NIGHT...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. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Moderate to fresh E to SE winds are expected north
of the Greater Antilles to 27N through Fri as a strong pressure 
gradient prevails between low pressure over the south-central 
Caribbean and high pressure in the central Atlantic. Strong winds
will pulse north of Hispaniola and through the Windward Passage 
into early Sat. Winds will diminish slightly Sun into next week 
as high pressure weakens and drifts westward over the western 
Atlantic. Moderate SE winds will occur off the coast of Florida 
tonight, west of 75W, as low pressure in the north-central Gulf 
moves westward. Elsewhere, south of 20N, moderate to fresh trade 
winds and moderate seas will prevail through this weekend. 

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

.OVERNIGHT...SE winds 10 to 15 kt. Seas 4 ft. 
.FRI...S winds 10 kt. Seas 3 to 4 ft. 
.FRI NIGHT...S winds 10 kt. Seas 3 to 4 ft. 
.SAT...S winds less than 10 kt. Seas 3 to 4 ft. 
.SAT NIGHT...S winds less than 10 kt. Seas 3 to 4 ft. 
.SUN...SW winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft. 
.SUN NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE...SW winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft. 
.TUE NIGHT...SW winds less than 10 kt. Seas 3 ft. 

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

.OVERNIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. 
.FRI...Variable winds less than 10 kt. Seas 3 to 4 ft. 
.FRI NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. 
.SAT...Variable winds less than 10 kt. Seas 3 to 4 ft. 
.SAT NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. 
.SUN...S winds less than 10 kt. Seas 3 ft. 
.SUN NIGHT...S winds less than 10 kt. Seas 3 to 4 ft. 
.MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE...SW winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE NIGHT...SW winds 10 to 15 kt, diminishing to less than
10 kt after midnight. Seas 3 to 5 ft. 

Bahamas N of 22N

.OVERNIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI NIGHT...E 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 ft. 
.SUN...E winds 10 to 15 kt. Seas 3 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less. 
.MON...E winds less than 10 kt. Seas 2 ft or less. 
.MON NIGHT...SE winds less than 10 kt. Seas 2 ft or less. 
.TUE...SE winds less than 10 kt. Seas 2 ft or less, building to
3 ft in the afternoon. 
.TUE NIGHT...E winds less than 10 kt, shifting to SE after
midnight. Seas 3 ft. 

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

.OVERNIGHT...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 4 to 5 ft. 
.SAT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.SUN...E winds 10 kt. Seas 3 to 4 ft. 
.SUN NIGHT...SE winds 10 kt. Seas 3 to 4 ft. 
.MON...SE winds 10 kt. Seas 3 to 4 ft. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE...SE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft. 
.TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 

ATLC waters S of 22N W of 65W

.OVERNIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.FRI...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.SAT...E winds 10 to 15 kt. Seas 4 to 6 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 19N to 22N between 55W and 65W

.OVERNIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.FRI...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.SAT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.SUN...E winds 10 to 15 kt. Seas 4 to 5 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.MON...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft.