263
FZNT31 KNHC 250918
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
518 AM EDT Wed Sep 25 2024

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...Tropical Storm Helene is near 20.7N 86.0W at 5 AM
EDT, and is moving north-northwest at 8 kt. Maximum sustained
winds are 55 kt with gusts to 65 kt, and the minimum central
pressure is 985 mb. Helene will strengthen to a hurricane near
21.9N 86.5W this afternoon, then move to 24.1N 86.2W Thu
morning. Hurricane Helene will be near 27.4N 85.0W Thu
afternoon, 32.0N 84.2W Fri morning, then move inland and weaken
to a tropical depression near 35.9N 85.4W Fri afternoon.

NW Caribbean W of 85W

...HURRICANE WARNING...

.TODAY...TROPICAL STORM CONDITIONS. SW winds 50 to 60 kt,
increasing to 60 to 70 kt in the afternoon. Seas 9 to 14 ft.
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. SW winds 40 to
50 kt, diminishing to 30 to 40 kt after midnight. Seas 8 to
11 ft.
.THU...SW winds 20 to 30 kt. Seas 6 to 8 ft.
.THU NIGHT...SW winds 10 to 15 kt, shifting to S after midnight.
Seas 4 to 6 ft.
.FRI...SW winds less than 10 kt. Seas 3 to 5 ft.
.FRI NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 5 ft.
.SAT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN...E winds 10 to 15 kt. Seas 3 to 4 ft.

Caribbean N of 15N between 72W and 85W

...TROPICAL STORM WARNING...

.TODAY...TROPICAL STORM CONDITIONS. SE winds 15 to 25 kt S of
18N, and SE 35 to 45 kt elsewhere. Seas 5 to 7 ft S of 18N, and
7 to 10 ft elsewhere.
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 10 to
20 kt S of 18N, and S 30 to 40 kt elsewhere. Seas 5 to 7 ft S of
18N, and 7 to 10 ft elsewhere.
.THU...SE winds 10 to 20 kt S of 18N, and S 20 to 30 kt
elsewhere. Seas 4 to 6 ft S of 18N, and 6 to 9 ft elsewhere.
.THU NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.FRI...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN...E winds 10 to 15 kt. Seas 3 to 4 ft.

Caribbean from 11N to 15N W of 72W

.TODAY...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.TONIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.THU...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.THU NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...E winds less than 10 kt within 90 nm of coast of
Colombia, and E 10 to 15 kt elsewhere. Seas 3 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 ft.
.SAT...E winds 10 to 15 kt. Seas 2 ft or less.
.SAT NIGHT...Within 90 nm of coast of Colombia, S winds less
than 10 kt. Elsewhere, NE winds 10 to 15 kt, shifting to E after
midnight. Seas 2 ft or less.
.SUN...SE winds 10 to 15 kt. Seas 2 ft or less.

SW Caribbean S of 11N

.TODAY...SW winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 2 ft or less.
.TONIGHT...SW winds less than 10 kt. Seas 2 ft or less.
.THU...SW winds less than 10 kt. Seas 2 ft or less.
.THU NIGHT...W winds less than 10 kt. Seas 2 ft or less.
.FRI...Variable winds less than 10 kt, becoming SW less than
10 kt in the afternoon. Seas 2 ft or less.
.FRI NIGHT...NW winds less than 10 kt. Seas 2 ft or less.
.SAT...W winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...W winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less.
.SUN...SW winds 10 to 15 kt. Seas 2 ft or less.

Caribbean between 64W and 72W

.TODAY...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.
.TONIGHT...E winds 10 to 20 kt. Gulf of Venezuela, seas 2 ft or
less, building to 3 ft after midnight. Elsewhere, seas 3 to
5 ft.
.THU...E winds 10 to 15 kt. Seas 3 to 4 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...NE winds less than 10 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to
4 ft elsewhere.
.FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 4 ft elsewhere.
.SAT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of Venezuela,
and 3 to 4 ft elsewhere.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 4 ft elsewhere.
.SUN...SW winds less than 10 kt Gulf of Venezuela, and E 10 to
15 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and 3 to
4 ft elsewhere.

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

.TODAY...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.THU...E winds 10 to 15 kt. Seas 4 to 6 ft.
.THU NIGHT...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 less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 5 ft.
.SAT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...E winds less than 10 kt. Seas 3 to 5 ft.
.SUN...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

.TODAY...E winds 10 to 15 kt. Seas 3 to 4 ft.
.TONIGHT...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...E winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...E winds 10 to 15 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 to 5 ft.
.SUN...E winds 10 to 15 kt. Seas 3 to 5 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Tropical Storm Helene is near 20.7N 86.0W at 5 AM
EDT, and is moving north-northwest at 8 kt. Maximum sustained
winds are 55 kt with gusts to 65 kt, and the minimum central
pressure is 985 mb. Helene will strengthen to a hurricane near
21.9N 86.5W this afternoon, then move to 24.1N 86.2W Thu morning.
Hurricane Helene will be near 27.4N 85.0W Thu afternoon, 32.0N
84.2W Fri morning, then move inland and weaken to a tropical
depression near 35.9N 85.4W Fri afternoon.

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

...TROPICAL STORM WARNING...

.TODAY...SE winds 10 to 20 kt. Seas 5 to 6 ft.
.TONIGHT...SE winds 15 to 20 kt. Seas 5 to 7 ft.
.THU...SE winds 15 to 25 kt. Seas 6 to 8 ft.
.THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 25 to
35 kt. Seas 8 to 13 ft.
.FRI...S winds 20 to 30 kt. Seas 8 to 13 ft.
.FRI NIGHT...S winds 15 to 25 kt. Seas 7 to 10 ft.
.SAT...SW winds 10 to 20 kt. Seas 5 to 7 ft.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN...W winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 to 5 ft.

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

.TODAY...NE winds 10 to 15 kt. Seas 5 to 7 ft.
.TONIGHT...E winds 10 to 20 kt W of 70W, and NE less than 10 kt
elsewhere. Seas 5 to 6 ft.
.THU...E winds 10 to 20 kt. Seas 5 to 7 ft.
.THU NIGHT...SE winds 15 to 25 kt W of 70W, and E 10 kt
elsewhere. Seas 6 to 7 ft.
.FRI...S winds 15 to 25 kt W of 70W, and E 10 kt elsewhere. Seas
5 to 7 ft.
.FRI NIGHT...SE winds 10 to 20 kt. Seas 5 to 7 ft.
.SAT...S winds 10 to 20 kt W of 70W, and NE less than 10 kt
elsewhere. Seas 5 to 6 ft.
.SAT NIGHT...W of 70W, SW winds 10 to 15 kt. Elsewhere, NW winds
less than 10 kt, increasing to 10 to 15 kt after midnight. Seas
4 to 5 ft.
.SUN...NW winds 10 to 15 kt. Seas 4 to 5 ft.

Bahamas N of 22N

.TODAY...SE winds 15 to 25 kt. Seas 3 to 4 ft.
.TONIGHT...SE winds 20 to 30 kt. Seas 3 to 4 ft.
.THU...SE winds 20 to 30 kt. Seas 3 to 5 ft.
.THU NIGHT...SE winds 15 to 25 kt. Seas 3 to 4 ft.
.FRI...S winds 15 to 25 kt. Seas 3 to 4 ft.
.FRI NIGHT...SE winds 10 to 20 kt. Seas 3 to 4 ft.
.SAT...SE winds 10 to 20 kt. Seas 3 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 ft.
.SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 ft.

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

.TODAY...E winds 10 to 15 kt W of 70W, and NE less than 10 kt
elsewhere. Seas 5 to 6 ft.
.TONIGHT...E winds 10 to 15 kt W of 70W, and NE less than 10 kt
elsewhere. Seas 5 to 6 ft.
.THU...E winds 10 to 20 kt. Seas 5 to 6 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 5 to 6 ft.
.FRI...E winds 10 to 20 kt. Seas 5 to 6 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 6 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...NE winds less than 10 kt. Seas 4 to 5 ft.

ATLC waters S of 22N W of 65W

.TODAY...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.THU...E winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.
.SAT...E winds 10 to 15 kt. Seas 3 to 5 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.

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

.TODAY...E winds 10 kt. Seas 4 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft.
.THU...E winds 10 to 15 kt. Seas 4 to 5 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 5 ft.
.FRI...E winds 10 to 15 kt. Seas 5 to 6 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft.
.SAT...E winds 10 to 15 kt. Seas 5 to 6 ft.
.SAT NIGHT...E winds 10 kt. Seas 5 to 6 ft.
.SUN...E winds 10 kt. Seas 5 to 6 ft.