384
FZNT31 KNHC 181549
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1149 AM EDT Mon Aug 18 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...Major Hurricane Erin is centered near 23.1N 70.8W at
18/1500 UTC or 100 nm N of Grand Turk Island, moving WNW at 9
kt. Estimated minimum central pressure is 935 mb. Maximum
sustained wind speed is 120 kt with gusts to 145 kt. Erin will
move to 24.2N 71.6W this evening, 25.7N 72.5W Tue morning, 27.4N
73.2W Tue evening, 29.5N 73.5W Wed morning, 31.7N 73.1W Wed
evening, and 33.9N 71.6W Thu morning. Outer bands of Erin will
produce localized areas of heavy rainfall across portions of
Hispaniola today. Additional rainfall of 2 to 4 inches, with
locally higher amounts to 6 inches, are forecast. Fresh S to SW
winds over the north-central Caribbean and through the Atlantic
passages will continue through tonight as Erin lifts
northwestward to northward, with winds diminishing through Tue.
Rough seas are expected in the Mona Passage today before seas
subside tonight. Moderate to locally fresh trade winds and
moderate are then expected late Tue through late this week over
the central and eastern basin as high pressure builds in the wake
of Erin.

NW Caribbean W of 85W

.THIS AFTERNOON...N winds less than 10 kt. Seas 2 ft or less.
.TONIGHT...E winds less than 10 kt. Seas 2 ft or less.
.TUE...Variable winds less than 10 kt. Seas 2 ft or less.
.TUE NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.WED...SE winds less than 10 kt. Seas 2 ft or less.
.WED NIGHT...E winds less than 10 kt, shifting to SE after
midnight. Seas 2 ft or less.
.THU...SE winds 10 to 15 kt. Seas 2 ft or less.
.THU NIGHT...SE winds 10 to 15 kt. Seas 2 ft or less.
.FRI...SE winds 10 to 15 kt. Seas 2 ft or less.

Caribbean N of 15N between 72W and 85W

.THIS AFTERNOON...NW winds 10 to 15 kt. Seas 2 ft or less.
.TONIGHT...S of 18N, NW winds less than 10 kt, shifting to SE
after midnight. Elsewhere, N winds 10 to 20 kt. Seas 2 ft or
less.
.TUE...S of 18N, SE winds less than 10 kt. Elsewhere, NE winds
10 to 20 kt, shifting to W in the afternoon. Seas 2 ft or less.
.TUE NIGHT...S of 18N, E winds less than 10 kt, increasing to
10 to 15 kt after midnight. Elsewhere, SW winds 10 to 15 kt.
Seas 2 ft or less.
.WED...SE winds 10 to 15 kt. Seas 2 ft or less.
.WED NIGHT...SE winds 10 to 20 kt. S of 18N, seas 2 ft or less,
building to 3 to 4 ft after midnight. Elsewhere, seas 2 ft or
less.
.THU...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and 2 ft or
less elsewhere.
.THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and
2 ft or less elsewhere.
.FRI...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and 2 ft or
less elsewhere.

Caribbean from 11N to 15N W of 72W

.THIS AFTERNOON...SW winds less than 10 kt. Seas 2 ft or less.
.TONIGHT...E winds less than 10 kt. Seas 2 ft or less.
.TUE...E winds 10 to 15 kt. Seas 2 ft or less.
.TUE NIGHT...E winds 10 to 20 kt. Seas 2 ft or less.
.WED...E winds 10 to 20 kt. Seas 3 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 3 to 5 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.

SW Caribbean S of 11N

.THIS AFTERNOON...SW winds less than 10 kt. Seas 2 ft or less.
.TONIGHT...NE winds less than 10 kt. Seas 2 ft or less.
.TUE...E winds less than 10 kt. Seas 2 ft or less.
.TUE NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less.
.WED...NE winds 10 to 15 kt. Seas 2 ft or less.
.WED NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less, building
to 3 ft after midnight.
.THU...NE winds 10 to 15 kt, shifting to NW in the afternoon.
Seas 3 to 4 ft.
.THU NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft.
.FRI...W winds less than 10 kt. Seas 3 to 4 ft.

Caribbean between 64W and 72W

.THIS AFTERNOON...Variable winds less than 10 kt Gulf of
Venezuela, and S 10 to 20 kt elsewhere. Seas 2 ft or less Gulf
of Venezuela, and 3 to 5 ft elsewhere.
.TONIGHT...NE winds less than 10 kt Gulf of Venezuela, and SE
10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and
3 to 5 ft elsewhere.
.TUE...Gulf of Venezuela, Variable winds less than 10 kt,
becoming S less than 10 kt in the afternoon. Elsewhere, SE winds
10 to 20 kt. Seas 2 ft or less Gulf of Venezuela, and 3 to 4 ft
elsewhere.
.TUE NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 4 ft elsewhere.
.WED...E winds 10 to 20 kt. Seas 3 to 5 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.THU...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela,
and 4 to 6 ft elsewhere.
.THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.FRI...E winds 10 to 20 kt. Gulf of Venezuela, seas 3 ft in the
morning, subsiding to 2 ft or less. Elsewhere, 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 3 to 5 ft.
.TONIGHT...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.
.WED...E winds 10 to 20 kt. Seas 4 to 6 ft.
.WED NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.THU...NE winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.FRI...SE winds 10 to 20 kt. Seas 5 to 7 ft.

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

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 4 ft.
.TONIGHT...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 10 to 20 kt. Seas 3 to 5 ft.
.WED...E winds 10 to 20 kt. Seas 3 to 5 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.THU...E winds 10 to 15 kt. Seas 4 to 6 ft.
.THU NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.FRI...SE winds 10 to 20 kt. Seas 4 to 6 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Hurricane Erin is centered near 23.1N 70.8W at
18/1500 UTC or 100 nm N of Grand Turk Island, moving WNW at 9 kt.
Estimated minimum central pressure is 935 mb. Maximum sustained
wind speed is 120 kt with gusts to 145 kt. Erin will move to
24.2N 71.6W this evening, 25.7N 72.5W Tue morning, 27.4N 73.2W
Tue evening, 29.5N 73.5W Wed morning, 31.7N 73.1W Wed evening,
and 33.9N 71.6W Thu morning. Erin will change little in intensity
as it moves to 37.7N 65.0W early Fri. Tropical storm conditions
are expected today across the Turks and Caicos Islands and the
southeast Bahamas. Tropical storm conditions are possible in
portions of the central Bahamas late today through Tuesday.
Swells generated by Erin will affect the Bahamas, Bermuda, and
the east coast of the United States during the next several days.
These rough ocean conditions will likely cause life-threatening
surf and rip currents. Looking ahead, a tropical wave located
over the eastern tropical Atlantic is producing disorganized
showers and thunderstorms. Environmental conditions appear
conducive for gradual development of this system, and a tropical
depression could form during the latter part of the week. This
system should move westward to west-northwestward at about 20 mph
across the central tropical Atlantic and approach the vicinity
of the Leeward Islands toward the end of the week. There is a
medium chance of development within the next 7 days.

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

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas 6 to 8 ft.
.TONIGHT...NE winds 10 to 15 kt. Seas 8 to 11 ft.
.TUE...NE winds 10 to 20 kt. Seas 10 to 15 ft.
.TUE NIGHT...N winds 20 to 30 kt. Seas 13 to 18 ft.
.WED...NW winds 20 to 30 kt. Seas 14 to 19 ft.
.WED NIGHT...NW winds 20 to 30 kt. Seas 12 to 17 ft.
.THU...NW winds 15 to 25 kt. Seas 10 to 15 ft.
.THU NIGHT...NW winds 10 to 15 kt, diminishing to less than
10 kt after midnight. Seas 8 to 12 ft.
.FRI...NE winds less than 10 kt. Seas 7 to 9 ft.

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

...HURRICANE WARNING...

.THIS AFTERNOON...TROPICAL STORM CONDITIONS POSSIBLE. E winds
20 to 30 kt. Seas 9 to 20 ft.
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to
45 kt W of 70W, and SE 25 to 35 kt elsewhere. W of 70W, seas 12
to 17 ft, building to 15 to 30 ft after midnight. Elsewhere,
seas 11 to 16 ft.
.TUE...HURRICANE CONDITIONS EXPECTED. W of 70W, E winds 40 to 50
kt, increasing to 70 to 90 kt in the afternoon. Seas 30 to 48
ft, building to 20 to 30 ft in the afternoon. Elsewhere, SE winds
30 to 40 kt, seas 13 to 18 ft.
.TUE NIGHT...HURRICANE CONDITIONS EXPECTED. E winds 85 to
105 kt W of 70W, and SE 30 to 40 kt elsewhere. Seas 25 to 50 ft
W of 70W, and 14 to 19 ft elsewhere.
.WED...HURRICANE CONDITIONS POSSIBLE. SW winds 85 to 105 kt W
of 70W, and S 30 to 40 kt elsewhere. Seas 27 to 37 ft W of 70W,
and 15 to 20 ft elsewhere.
.WED NIGHT...HURRICANE CONDITIONS POSSIBLE.
.THU...TROPICAL STORM CONDITIONS POSSIBLE.
.THU NIGHT...W winds 20 to 30 kt W of 70W, and SW 20 to 30 kt
elsewhere. Seas 11 to 16 ft.
.FRI...W of 70W, NW winds 10 to 20 kt. Elsewhere, W winds 20 to
30 kt, diminishing to 10 to 20 kt in the afternoon. Seas 9 to
14 ft.

Bahamas N of 22N

...TROPICAL STORM WARNING...

.THIS AFTERNOON...TROPICAL STORM CONDITIONS POSSIBLE. N winds
25 to 35 kt. Seas 6 to 9 ft.
.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 25 to
35 kt. Seas 7 to 10 ft.
.TUE...TROPICAL STORM CONDITIONS POSSIBLE. NW winds 20 to
30 kt. Seas 8 to 11 ft.
.TUE NIGHT...W winds 20 to 30 kt. Seas 7 to 10 ft.
.WED...W winds 15 to 25 kt. Seas 6 to 8 ft.
.WED NIGHT...SW winds 10 to 20 kt. Seas 5 to 7 ft.
.THU...W winds 10 to 15 kt. Seas 4 to 6 ft.
.THU NIGHT...SW winds less than 10 kt. Seas 3 to 5 ft.
.FRI...W winds less than 10 kt. Seas 3 to 4 ft.

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

...HURRICANE WARNING...

.THIS AFTERNOON...HURRICANE CONDITIONS. NE winds 95 to 115 kt W
of 70W, and SE 55 to 65 kt elsewhere. Seas 20 to 45 ft W of 70W,
and 15 to 25 ft elsewhere.
.TONIGHT...HURRICANE CONDITIONS EXPECTED. W of 70W, NE winds
100 to 120 kt. Elsewhere, SE winds 45 to 55 kt, diminishing to
35 to 45 kt after midnight. Seas 23 to 40 ft W of 70W, and 16 to
21 ft elsewhere.
.TUE...HURRICANE CONDITIONS EXPECTED. SW winds 95 to 115 kt W
of 70W, and S 30 to 40 kt elsewhere. Seas 21 to 48 ft W of 70W,
and 13 to 18 ft elsewhere.
.TUE NIGHT...HURRICANE CONDITIONS EXPECTED. W of 70W, SW winds
85 to 105 kt, diminishing to 50 to 60 kt after midnight. Seas 15
to 30 ft, subsiding to 15 to 20 ft after midnight. Elsewhere, S
winds 30 to 40 kt, seas 10 to 15 ft.
.WED...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, SW winds
35 to 45 kt, diminishing to 20 to 30 kt in the afternoon.
Elsewhere, S winds 20 to 30 kt. Seas 12 to 17 ft W of 70W, and
8 to 13 ft elsewhere.
.WED NIGHT...S winds 20 to 30 kt. W of 70W, seas 9 to 14 ft,
subsiding to 8 to 11 ft after midnight. Elsewhere, seas 8 to
11 ft.
.THU...S winds 15 to 25 kt. Seas 7 to 10 ft.
.THU NIGHT...S winds 10 to 20 kt. Seas 7 to 10 ft.
.FRI...SW winds 10 to 15 kt. Seas 6 to 8 ft.

ATLC waters S of 22N W of 65W

...TROPICAL STORM WARNING...

.THIS AFTERNOON...TROPICAL STORM CONDITIONS. SW winds 40 to
50 kt. Seas 9 to 22 ft.
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. SW winds 30 to
40 kt, becoming S 20 to 30 kt after midnight. Seas 8 to 14 ft.
.TUE...S winds 20 to 30 kt. Seas 7 to 10 ft.
.TUE NIGHT...S winds 10 to 20 kt. Seas 5 to 7 ft.
.WED...S winds 10 to 20 kt. Seas 4 to 6 ft.
.WED NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.THU...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft.

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

.THIS AFTERNOON...SE winds 15 to 25 kt. Seas 5 to 7 ft.
.TONIGHT...SE winds 10 to 20 kt. Seas 5 to 7 ft.
.TUE...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft.
.WED...E winds 10 to 15 kt. Seas 5 to 6 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU...E winds 15 to 25 kt. Seas 6 to 8 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft.
.FRI...E winds 10 to 20 kt. Seas 6 to 9 ft.