464 
FZNT31 KNHC 150320
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1120 PM EDT Wed Aug 14 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...Hurricane Ernesto N of the area near 23.0N 68.9W at
11 PM AST, moving northwest at 14 kt. Maximum sustained winds
are 70 kt with gusts to 85 kt, and the minimum central pressure
is 982 mb. Ernesto is forecast to continue to strengthen as it
moves in a northerly motion at around 11 kt over the western
Atlantic through the end of the week, passing very near Bermuda
on Sat morning. In its wake, high pressure will gradually build
westward along 21N late Fri into early next week, bringing a
return to a more typical trade wind flow across the basin. A
tropical wave near 50W is accompanied by scattered thunderstorms
and gusty winds. The wave will move through the Tropical N
Atlantic waters and into the eastern Caribbean through Fri while
weakening. 

NW Caribbean W of 85W

.OVERNIGHT...NE winds 10 to 15 kt. Seas 3 ft. 
.THU...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 ft. 
.THU NIGHT...E winds 10 to 15 kt. Seas 3 ft. 
.FRI...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 3 ft. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to
3 ft after midnight. 
.SAT...E winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less. 
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to
3 ft after midnight. 
.SUN...E winds 10 to 15 kt. Seas 3 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.MON...E winds 10 to 20 kt. Seas 3 to 4 ft. 

Caribbean N of 15N between 72W and 85W

.OVERNIGHT...NE winds 10 to 20 kt. Seas 3 to 4 ft. 
.THU...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.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. 
.FRI NIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds
10 to 15 kt, diminishing to less than 10 kt after midnight. Seas
3 to 5 ft S of 18N, and 2 ft or less elsewhere. 
.SAT...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and 2 ft or
less elsewhere. 
.SAT NIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds
10 to 15 kt, diminishing to less than 10 kt after midnight. Seas
3 to 5 ft S of 18N, and 2 ft or less elsewhere. 
.SUN...S of 18N, E winds 10 to 20 kt. Elsewhere, E winds less
than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas
3 to 5 ft S of 18N, and 2 ft or less elsewhere. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and
2 ft or less elsewhere. 
.MON...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 2 ft or
less elsewhere. 

Caribbean from 11N to 15N W of 72W

.OVERNIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI NIGHT...NE winds 15 to 25 kt. Seas 3 to 5 ft. 
.SAT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.SUN...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...E winds 15 to 25 kt. Seas 4 to 6 ft. 

SW Caribbean S of 11N

.OVERNIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. 
.THU...N winds less than 10 kt. Seas 3 ft. 
.THU NIGHT...N winds less than 10 kt. Seas 3 ft. 
.FRI...N winds less than 10 kt in the morning, becoming variable
winds less than 10 kt. Seas 3 ft. 
.FRI NIGHT...N winds less than 10 kt. Seas 3 ft. 
.SAT...W winds less than 10 kt. Seas 3 to 4 ft. 
.SAT NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. 
.SUN...SW winds less than 10 kt. Seas 3 to 4 ft. 
.SUN NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. 
.MON...S winds less than 10 kt, shifting to W in the afternoon.
Seas 3 ft. 

Caribbean between 64W and 72W

.OVERNIGHT...SE winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 4 to 6 ft elsewhere. 
.THU...Gulf of Venezuela, E winds 10 to 15 kt, shifting to SW in
the afternoon. Elsewhere, SE winds 10 to 20 kt. Seas 2 ft or
less Gulf of Venezuela, and 5 to 7 ft elsewhere. 
.THU NIGHT...NE winds 10 to 20 kt Gulf of Venezuela, and E 15 to
25 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 4 to 6 ft
elsewhere. 
.FRI...E winds 10 to 20 kt Gulf of Venezuela, and E 15 to 25 kt
elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 5 to 7 ft
elsewhere. 
.FRI NIGHT...Gulf of Venezuela, NE winds 10 to 20 kt, shifting
to E 20 to 25 kt after midnight. Elsewhere, E winds 15 to 25 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 4 to 5 ft. 
.SUN...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela, and
4 to 6 ft elsewhere. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of
Venezuela, and 4 to 6 ft elsewhere. 
.MON...E winds 10 to 20 kt Gulf of Venezuela, and E 15 to 25 kt
elsewhere. Seas 4 to 6 ft. 

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

.OVERNIGHT...E winds 10 to 20 kt. Seas 4 to 5 ft. 
.THU...E winds 10 to 20 kt. Seas 4 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 4 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON...E winds 10 to 15 kt. Seas 4 to 5 ft. 

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

.OVERNIGHT...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...SE 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 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. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...E winds 10 to 20 kt. Seas 3 to 5 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A weakening ridge from the central Atlantic W-SW to 
the northern Bahamas will shift E and give way to Ernesto on
Thu. Hurricane Ernesto is near 23.0N 68.9W at 11 PM AST, moving 
northwest at 14 kt. Maximum sustained winds are 70 kt with gusts 
to 85 kt, and the minimum central pressure is 982 mb. Ernesto is 
expected to turn toward the north-northwest then north tonight 
through Thu morning as it continues to strengthen, reaching near 
24.7N 69.1W Thu morning, near 26.8N 68.6W Thu evening, near 28.6N
67.4W Fri morning, then pass very near Bermuda Sat morning. A 
weak frontal boundary extends from near Bermuda to north-central 
Florida and will drift southward across the northwestern part of 
the area, and stall to the NW of Ernesto by Fri, producing 
moderate to fresh NE winds behind it. Large swell from Ernesto 
will spread W of 75W late Thu night through Sat morning. 

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

.OVERNIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.THU...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.THU NIGHT...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 6 to 8 ft. 
.SAT...NE winds less than 10 kt. Seas 5 to 7 ft. 
.SAT NIGHT...E winds less than 10 kt, shifting to S after
midnight. Seas 5 to 6 ft. 
.SUN...SW winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 5 to 6 ft. 
.SUN NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON...SW winds 10 to 15 kt. Seas 4 to 6 ft. 

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

...HURRICANE WARNING...

.OVERNIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S winds 10 to
20 kt. Seas 4 to 6 ft. 
.THU...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, NE winds
20 to 30 kt, seas 5 to 7 ft, building to 8 to 11 ft in the
afternoon. Elsewhere, S winds 20 to 30 kt, becoming SE 35 to
45 kt in the afternoon,Seas 8 to 11 ft, building to 11 to 16 ft
in the afternoon. 
.THU NIGHT...HURRICANE CONDITIONS EXPECTED. N winds 25 to 35 kt
W of 70W, and E 75 to 90 kt elsewhere. W of 70W, seas 10 to
15 ft. Elsewhere, seas 15 to 20 ft, building to 16 to 26 ft
after midnight. 
.FRI...HURRICANE CONDITIONS EXPECTED. W of 70W, N winds 20 to
30 kt. Elsewhere, E winds 80 to 100 kt, shifting to NW 85 to
95 kt in the afternoon. Seas 10 to 15 ft W of 70W, and 19 to
29 ft elsewhere. 
.FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. N winds 15 to 25 kt
W of 70W, and W 75 to 95 kt elsewhere. W of 70W, seas 8 to
11 ft. Elsewhere, seas 16 to 26 ft, subsiding to 16 to 21 ft
after midnight. 
.SAT...HURRICANE CONDITIONS POSSIBLE. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.SUN...W of 70W, W winds 10 to 15 kt, diminishing to less than
10 kt in the afternoon. Elsewhere, SW winds 10 to 20 kt. Seas
7 to 10 ft. 
.SUN NIGHT...W of 70W, SW winds less than 10 kt, shifting to S
after midnight. Elsewhere, SW winds 10 to 15 kt. Seas 6 to 8 ft.
.MON...S winds 10 to 15 kt. Seas 4 to 6 ft. 

Bahamas N of 22N

.OVERNIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU...NE winds 10 to 15 kt, shifting to NW in the afternoon.
Seas 4 to 6 ft. 
.THU NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. 
.FRI...NW winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.SAT...NW winds less than 10 kt. Seas 3 ft. 
.SAT NIGHT...N winds less than 10 kt, shifting to SE after
midnight. Seas 3 ft. 
.SUN...S winds less than 10 kt. Seas 3 ft. 
.SUN NIGHT...SE winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 2 ft or less, building to 3 ft after
midnight. 
.MON...S winds 10 to 15 kt. Seas 3 to 4 ft. 

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

...HURRICANE WARNING...

.OVERNIGHT...TROPICAL STORM CONDITIONS. NE winds 25 to 35 kt W
of 70W, and SE 60 to 70 kt elsewhere. Seas 8 to 11 ft W of 70W,
and 15 to 20 ft elsewhere. 
.THU...HURRICANE CONDITIONS EXPECTED. NW winds 30 to 40 kt W of
70W, and S 70 to 80 kt elsewhere. W of 70W, seas 10 to 15 ft.
Elsewhere, seas 17 to 22 ft, building to 15 to 25 ft in the
afternoon. 
.THU NIGHT...HURRICANE CONDITIONS EXPECTED. W of 70W, NW winds
25 to 35 kt. Elsewhere, SW winds 80 to 90 kt, diminishing to
65 to 75 kt after midnight. Seas 9 to 14 ft W of 70W, and 15 to
20 ft elsewhere. 
.FRI...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, NW winds
15 to 25 kt. Elsewhere, SW winds 35 to 45 kt, diminishing to
25 to 35 kt in the afternoon. Seas 7 to 10 ft W of 70W, and
10 to 15 ft elsewhere. 
.FRI NIGHT...NW winds 10 to 20 kt W of 70W, and SW 20 to 30 kt
elsewhere. Seas 6 to 8 ft W of 70W, and 7 to 10 ft elsewhere. 
.SAT...W of 70W, NW winds 10 to 15 kt, diminishing to less than
10 kt in the afternoon. Elsewhere, SW winds 10 to 20 kt. Seas
6 to 9 ft. 
.SAT NIGHT...SW winds less than 10 kt W of 70W, and SW 10 to
20 kt elsewhere. Seas 6 to 8 ft. 
.SUN...S winds less than 10 kt W of 70W, and S 10 to 15 kt
elsewhere. Seas 4 to 6 ft. 
.SUN NIGHT...W of 70W, S winds less than 10 kt, increasing to
10 to 15 kt after midnight. Elsewhere, S winds 10 to 15 kt. Seas
4 to 6 ft. 
.MON...SE winds 10 to 15 kt. Seas 4 to 5 ft. 

ATLC waters S of 22N W of 65W

...TROPICAL STORM WARNING...

.OVERNIGHT...TROPICAL STORM CONDITIONS. SW winds 30 to 40 kt.
Seas 8 to 11 ft. 
.THU...SW winds 20 to 30 kt. Seas 6 to 9 ft. 
.THU NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft. 
.FRI...S winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.SAT...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.SUN...SE 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 20 kt. Seas 3 to 5 ft. 

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

.OVERNIGHT...E winds 15 to 25 kt. Seas 6 to 8 ft. 
.THU...SE winds 15 to 25 kt. Seas 5 to 7 ft. 
.THU NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI...SE winds 10 to 15 kt. Seas 4 to 5 ft. 
.FRI NIGHT...SE winds 10 to 15 kt. Seas 4 to 5 ft. 
.SAT...SE 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 4 to 5 ft. 
.MON...E winds 10 to 15 kt. Seas 4 to 5 ft.