782
FZNT31 KNHC 241513
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1113 AM EDT Tue Sep 24 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 19.5N 84.3W at 11 AM
EDT, and is moving northwest at 10 kt. Maximum sustained winds
are 40 kt with gusts to 50 kt, and the minimum central pressure
is 1000 mb. Helene will move to 20.3N 85.2W this evening,
strengthen to a hurricane near 21.5N 86.3W Wed morning, 23.2N
86.3W Wed evening, 25.9N 85.4W Thu morning, 29.7N 84.3W Thu
evening, and weaken to a tropical storm near 33.9N 83.9W Fri
morning. Helene will weaken as a post-tropical cyclone near
39.7N 86.8W early Sat. Helene is expected to become a large and
powerful hurricane.

NW Caribbean W of 85W

...HURRICANE WARNING...

.THIS AFTERNOON...TROPICAL STORM CONDITIONS EXPECTED. NW winds
25 to 35 kt. Seas 5 to 7 ft.
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. NW winds 35 to
45 kt, becoming W 45 to 55 kt after midnight. Seas 7 to 10 ft.
.WED...TROPICAL STORM CONDITIONS EXPECTED. SW winds 50 to
65 kt. Seas 8 to 11 ft.
.WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. SW winds 40 to
50 kt, diminishing to 30 to 40 kt after midnight. Seas 6 to
9 ft.
.THU...SW winds 20 to 30 kt. Seas 5 to 7 ft.
.THU NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...SE winds less than 10 kt. Seas 3 to 5 ft.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT...SE winds 10 to 15 kt. Seas 3 to 5 ft.

Caribbean N of 15N between 72W and 85W

...TROPICAL STORM WARNING...

.THIS AFTERNOON...TROPICAL STORM CONDITIONS EXPECTED. SE winds
25 to 35 kt S of 18N, and SE 35 to 45 kt elsewhere. Seas 4 to
6 ft S of 18N, and 6 to 9 ft elsewhere.
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 15 to
25 kt S of 18N, and SE 40 to 50 kt elsewhere. Seas 5 to 7 ft S
of 18N, and 7 to 10 ft elsewhere.
.WED...TROPICAL STORM CONDITIONS EXPECTED. SE winds 15 to 25 kt
S of 18N, and S 35 to 45 kt elsewhere. Seas 5 to 7 ft S of 18N,
and 7 to 10 ft elsewhere.
.WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 10 to
20 kt S of 18N, and S 30 to 40 kt elsewhere. Seas 4 to 6 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 4 to 6 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.

Caribbean from 11N to 15N W of 72W

.THIS AFTERNOON...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.TONIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.WED...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.WED NIGHT...SE winds 10 to 20 kt. Seas 3 to 5 ft.
.THU...SE 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 3 to 4 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 ft.
.SAT...SE winds less than 10 kt within 90 nm of coast of
Colombia, and E 10 to 15 kt elsewhere. Seas 3 ft.

SW Caribbean S of 11N

.THIS AFTERNOON...S winds 10 to 15 kt. Seas 2 ft or less.
.TONIGHT...S winds 10 to 15 kt. Seas 2 ft or less.
.WED...SW winds 10 to 15 kt. Seas 2 ft or less.
.WED NIGHT...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...Variable winds less than 10 kt. Seas 3 ft in the
evening, subsiding to 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.

Caribbean between 64W and 72W

.THIS AFTERNOON...E winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 5 ft elsewhere.
.TONIGHT...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 3 to 5 ft.
.THU...E winds 10 to 20 kt. Seas 3 to 4 ft.
.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela,
and 3 to 4 ft elsewhere.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT...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.

Offshore Leeward Islands and adjacent ATLC waters from 15N to
19N 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.
.WED...E winds 10 to 15 kt. Seas 3 to 5 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 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.

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.
.WED...E winds 10 to 15 kt. Seas 3 to 4 ft.
.WED NIGHT...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 3 to 5 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT...E winds 10 to 15 kt. Seas 3 to 4 ft.

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Tropical Storm Helene is near 19.5N 84.3W at 11 AM
EDT, and is moving northwest at 10 kt. Maximum sustained winds
are 40 kt with gusts to 50 kt, and the minimum central pressure
is 1000 mb. Helene will move to 20.3N 85.2W this evening,
strengthen to a hurricane near 21.5N 86.3W Wed morning, 23.2N
86.3W Wed evening, 25.9N 85.4W Thu morning, 29.7N 84.3W Thu
evening, and weaken to a tropical storm near 33.9N 83.9W Fri
morning. Helene will weaken as a post-tropical cyclone near
39.7N
86.8W early Sat. Helene is expected to become a large and
powerful hurricane. As Helene moves across the eastern Gulf of
Mexico, expect fresh to strong winds and rough seas just E of
the Florida Peninsula to about 78W.

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

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 4 to 5 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 5 to 6 ft.
.WED...SE winds 10 to 20 kt. Seas 5 to 6 ft.
.WED NIGHT...SE winds 15 to 25 kt. Seas 5 to 7 ft.
.THU...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 20 to
30 kt. Seas 6 to 9 ft.
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE.
.FRI...S winds 20 to 30 kt. Seas 8 to 13 ft.
.FRI NIGHT...S winds 10 to 20 kt. Seas 7 to 10 ft.
.SAT...SW winds 10 to 20 kt. Seas 5 to 7 ft.

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

.THIS AFTERNOON...NW winds 10 to 20 kt. Seas 6 to 8 ft.
.TONIGHT...N winds 10 to 20 kt. Seas 6 to 7 ft.
.WED...W of 70W, NE winds 10 to 15 kt. Elsewhere, NW winds 10 to
15 kt, shifting to N in the afternoon. Seas 5 to 6 ft.
.WED NIGHT...W of 70W, E winds 10 to 20 kt. Elsewhere, N winds
less than 10 kt, shifting to NE after midnight. Seas 5 to 6 ft.
.THU...E winds 10 to 20 kt. Seas 5 to 6 ft.
.THU NIGHT...SE winds 15 to 25 kt W of 70W, and E 10 to 15 kt
elsewhere. Seas 5 to 7 ft.
.FRI...S winds 15 to 25 kt W of 70W, and SE less than 10 kt
elsewhere. Seas 5 to 7 ft.
.FRI NIGHT...W of 70W, S winds 10 to 20 kt. Elsewhere, E winds
less than 10 kt, shifting to W after midnight. Seas 6 to 8 ft W
of 70W, and 5 to 6 ft elsewhere.
.SAT...SW winds 10 to 20 kt W of 70W, and NW less than 10 kt
elsewhere. Seas 5 to 7 ft.

Bahamas N of 22N

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft.
.WED...SE winds 15 to 25 kt. Seas 3 to 5 ft.
.WED NIGHT...SE winds 15 to 25 kt. Seas 3 to 5 ft.
.THU...SE winds 15 to 25 kt. Seas 3 to 5 ft.
.THU NIGHT...SE winds 15 to 25 kt. Seas 3 to 5 ft.
.FRI...S winds 10 to 20 kt. Seas 3 to 4 ft.
.FRI NIGHT...SE winds 10 to 20 kt. Seas 3 to 4 ft.
.SAT...SE 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

.THIS AFTERNOON...NE winds less than 10 kt. Seas 4 to 5 ft.
.TONIGHT...E winds 10 to 15 kt W of 70W, and N less than 10 kt
elsewhere. Seas 4 to 6 ft.
.WED...E winds 10 to 15 kt W of 70W, and NE less than 10 kt
elsewhere. Seas 5 to 6 ft.
.WED NIGHT...W of 70W, E winds 10 to 20 kt. Elsewhere, NE winds
less than 10 kt, shifting to E after midnight. Seas 5 ft.
.THU...SE winds 10 to 20 kt W of 70W, and E less than 10 kt
elsewhere. Seas 5 to 6 ft.
.THU NIGHT...W of 70W, SE winds 10 to 20 kt. Elsewhere, E winds
10 to 15 kt, diminishing to less than 10 kt after midnight. Seas
5 to 6 ft.
.FRI...SE winds 10 to 20 kt W of 70W, and SE less than 10 kt
elsewhere. Seas 5 to 6 ft.
.FRI NIGHT...W of 70W, SE winds 10 to 15 kt, diminishing to less
than 10 kt after midnight. Elsewhere, NE winds less than 10 kt.
Seas 5 to 6 ft.
.SAT...NE winds less than 10 kt. Seas 4 to 5 ft.

ATLC waters S of 22N W of 65W

.THIS AFTERNOON...E winds less than 10 kt, increasing to 10 to
15 kt in the afternoon. Seas 3 to 4 ft.
.TONIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft.
.WED...E winds 10 to 20 kt. Seas 3 to 5 ft.
.WED NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft.
.THU...E winds 10 to 20 kt. Seas 3 to 5 ft.
.THU NIGHT...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 20 kt. Seas 3 to 5 ft.
.SAT...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 less than 10 kt. Seas 3 to 4 ft.
.TONIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft.
.WED...E winds less than 10 kt. Seas 4 ft.
.WED NIGHT...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 ft.