034
FZNT31 KNHC 222018
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
418 PM EDT Fri Aug 22 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 moderate to locally rough
seas will prevail over the central Caribbean Sat night through
the next several days as central Atlantic high pressure builds
W-SW across the western Atlantic, in the wake of exiting
Hurricane Erin. Fresh to strong E to SE winds will pulse across
the Gulf of Honduras at night. Moderate to fresh trades are
expected in the eastern Caribbean and across the approach to the
Windward Passage with moderate or weaker winds elsewhere. An
area of disorganized showers and thunderstorms is located within
a couple hundred nautical miles NE of the northern Leeward
Islands. Environmental conditions appear conducive for further
development of this system, and a tropical depression is likely
to form this weekend while it moves northwestward and then
northward, in between the Lesser Antilles and Bermuda.

NW Caribbean W of 85W

.TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.SAT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.SAT NIGHT...E winds 10 to 20 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 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 15 kt. Seas 3 to 5 ft.
.WED...NE winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 5 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.

Caribbean N of 15N between 72W and 85W

.TONIGHT...E winds 10 to 15 kt S of 18N, and E less than 10 kt
elsewhere. 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 S of 18N, and E less than 10 kt
elsewhere. Seas 3 to 5 ft.
.SUN...E winds 10 to 20 kt. Seas 4 to 6 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 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.
.WED...E winds 10 to 20 kt. Seas 5 to 7 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.

Caribbean from 11N to 15N W of 72W

.TONIGHT...NE winds 15 to 20 kt within 90 nm of coast of
Colombia, and E 10 to 15 kt elsewhere. Seas 5 to 7 ft.
.SAT...E winds 10 to 15 kt. Seas 5 to 6 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.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 6 to 8 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 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.
.WED...E winds 10 to 20 kt. Seas 6 to 8 ft.
.WED NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft.

SW Caribbean S of 11N

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

Caribbean between 64W and 72W

.TONIGHT...NE winds 15 to 20 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. Seas 3 to 5 ft.
.SAT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.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 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.
.WED...E winds 10 to 20 kt. Seas 6 to 8 ft.
.WED 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

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

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Hurricane Erin continues to move NE away from the
region. Large northerly swell generated by Erin will continue to
affect the W Atlantic waters through the next few days. In the
wake of Erin, central Atlantic high pressure will build W-SW
toward the central Bahamas and the Straits of Florida. An area
of disorganized showers and thunderstorms is located within a
couple hundred nautical miles NE of the northern Leeward Islands.
Environmental conditions appear conducive for further
development of this system, and a tropical depression is likely
to form this weekend while it moves northwestward and then
northward, in between the Lesser Antilles and Bermuda. This
system has a high chance of tropical cyclone formation.
Regardless of formation, gale-force winds are expected to develop
across the eastern semicircle of this low beginning Sun morning.

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

.TONIGHT...SW winds less than 10 kt in the evening, becoming
variable winds less than 10 kt. Seas 7 to 9 ft.
.SAT...SW winds less than 10 kt. Seas 6 to 8 ft.
.SAT NIGHT...SW winds less than 10 kt. Seas 6 to 7 ft.
.SUN...SW winds 10 to 15 kt. Seas 6 to 7 ft.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 6 to 7 ft.
.MON...W winds 10 to 15 kt. Seas 5 to 7 ft.
.MON NIGHT...SW winds less than 10 kt. Seas 4 to 6 ft.
.TUE...SW winds less than 10 kt. Seas 4 to 5 ft.
.TUE NIGHT...SW winds less than 10 kt. Seas 3 to 4 ft.
.WED...NW winds less than 10 kt. Seas 3 to 4 ft.
.WED NIGHT...E winds less than 10 kt. Seas 3 to 4 ft.

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

.TONIGHT...W of 70W, NW winds less than 10 kt in the evening,
becoming variable winds less than 10 kt. Elsewhere, W winds
10 kt. Seas 8 to 12 ft.
.SAT...Variable winds less than 10 kt. Seas 8 to 11 ft.
.SAT NIGHT...W of 70W, Variable winds less than 10 kt, becoming
S 10 kt after midnight. Elsewhere, Variable winds less than
10 kt. Seas 7 to 10 ft.
.SUN...W of 70W, SW winds 10 to 15 kt. Elsewhere, Variable winds
less than 10 kt, becoming SW less than 10 kt in the afternoon.
Seas 7 to 9 ft.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 7 to 8 ft.
.MON...SW winds 10 to 15 kt. Seas 6 to 8 ft.
.MON NIGHT...SW winds 10 to 15 kt. Seas 6 to 8 ft.
.TUE...SW winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 5 to 7 ft.
.TUE NIGHT...S winds less than 10 kt. Seas 4 to 6 ft.
.WED...SW winds less than 10 kt. Seas 3 to 5 ft.
.WED NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft.

Bahamas N of 22N

.TONIGHT...Variable winds less than 10 kt, becoming SE less than
10 kt after midnight. Seas 3 to 5 ft.
.SAT...SE winds less than 10 kt. Seas 3 to 5 ft.
.SAT NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft.
.SUN...SE winds less than 10 kt. Seas 3 to 5 ft.
.SUN NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 5 ft.
.MON...SE winds less than 10 kt. Seas 3 to 5 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.WED...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.

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

.TONIGHT...NW winds less than 10 kt, shifting to SE after
midnight. Seas 6 to 9 ft.
.SAT...Variable winds less than 10 kt. Seas 7 to 9 ft.
.SAT NIGHT...SE winds less than 10 kt. Seas 7 to 9 ft.
.SUN...W of 70W, SE winds 10 kt. Elsewhere, Variable winds less
than 10 kt, becoming S less than 10 kt in the afternoon. Seas
7 to 8 ft.
.SUN NIGHT...SE winds less than 10 kt. Seas 7 to 8 ft.
.MON...SE winds 10 kt. Seas 6 to 7 ft.
.MON NIGHT...SE winds 10 kt. Seas 6 to 7 ft.
.TUE...E winds 10 to 15 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 less than 10 kt. Seas 4 to 5 ft.

ATLC waters S of 22N W of 65W

.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 4 to 6 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 20 kt. Seas 5 to 7 ft.
.TUE...E winds 10 to 20 kt. Seas 6 to 8 ft.
.TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.WED...E winds 10 to 20 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...SE winds 10 to 15 kt. Seas 6 to 7 ft.
.SAT...SE winds 10 to 15 kt. Seas 6 to 7 ft.
.SAT NIGHT...SE winds less than 10 kt, shifting to E after
midnight. Seas 6 to 8 ft.
.SUN...E winds 10 to 15 kt. Seas 7 to 8 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 8 to 9 ft.
.MON...E winds 10 to 15 kt. Seas 8 to 9 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...SE winds 10 to 15 kt. Seas 5 to 6 ft.
.WED NIGHT...SE winds 10 kt. Seas 5 to 6 ft.