000
FZNT31 KNHC 302103
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
503 PM EDT Thu Jul 30 2020

Marine Weather HF Voice Broadcast for the Tropical N Atlantic
from 07N to 22N between 55W and 64W, the SW N Atlantic S of
31N W of 65W including 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 between 55W and 64W

.SYNOPSIS...Tropical Storm Isaias near 19.5N 70.6W 1003 mb at
5 PM EDT moving NW at 17 kt. Maximum sustained winds 50 kt gusts
60 kt. Isaias will move to 20.8N 72.7W Fri morning, 22.7N 75.1W
Fri afternoon, then strengthen to a hurricane Sat morning while
moving NW away from the region. Tropical storm conditions and
large seas will develop tonight in the Windward Passage. Fresh
to strong flow will persist south of Hispaniola into Fri. 

NW Caribbean W of 85W

.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.SAT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.SUN...E winds 10 to 15 kt, shifting to NE in the afternoon.
Seas 3 ft. 
.SUN NIGHT...E winds less than 10 kt. Seas 2 ft or less. 
.MON...E winds less than 10 kt. Seas 2 ft or less. 
.MON NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. 
.TUE...E winds 10 to 15 kt, diminishing to less than 10 kt in
the afternoon. Seas 2 ft or less. 

Caribbean N of 15N between 72W and 85W

...TROPICAL STORM WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 15 to 25
kt, except NE 25 to 35 kt in Windward Passage. Seas 5 to 7 ft, 
except 7 to 11 ft in Windward Passage.
.FRI...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.SAT...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 3 to
5 ft elsewhere. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and
3 ft elsewhere. 
.SUN...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and 2 ft or
less elsewhere. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft S of 18N, and
2 ft or less elsewhere. 
.MON...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and 2 ft or
less elsewhere. 
.MON NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft S of 18N, and
2 ft or less elsewhere. 
.TUE...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

.TONIGHT...N winds 10 to 15 kt. Seas 6 to 8 ft. 
.FRI...NE winds less than 10 kt within 90 nm of coast of
Colombia, and NW 10 to 20 kt elsewhere. Seas 5 to 7 ft. 
.FRI NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN NIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. 

SW Caribbean S of 11N

.TONIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI...NW winds less than 10 kt. Seas 4 to 6 ft. 
.FRI NIGHT...N winds less than 10 kt. Seas 4 to 6 ft. 
.SAT...W winds less than 10 kt. Seas 3 to 5 ft. 
.SAT NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. 
.SUN...N winds less than 10 kt. Seas 3 to 4 ft. 
.SUN NIGHT...N winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 4 ft. 
.MON...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. 
.TUE...NE winds less than 10 kt. Seas 3 ft. 

Caribbean between 64W and 72W

.TONIGHT...Gulf of Venezuela, NE winds 10 to 15 kt, diminishing
to less than 10 kt after midnight. Elsewhere, SE winds 20 to
30 kt. Seas 3 to 5 ft Gulf of Venezuela, and 7 to 10 ft
elsewhere. 
.FRI...E winds less than 10 kt Gulf of Venezuela, and E 15 to
25 kt elsewhere. Seas 3 to 4 ft Gulf of Venezuela, and 6 to 9 ft
elsewhere. 
.FRI NIGHT...NE winds 10 to 20 kt Gulf of Venezuela, and E 15 to
25 kt elsewhere. Gulf of Venezuela, seas 2 ft or less, building
to 3 to 4 ft after midnight. Elsewhere, seas 5 to 7 ft. 
.SAT...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela,
and 5 to 7 ft elsewhere. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela,
and 4 to 6 ft elsewhere. 
.SUN...E winds 10 to 20 kt. Gulf of Venezuela, seas 3 ft in the
morning, subsiding to 2 ft or less. Elsewhere, seas 4 to 6 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 3 ft Gulf of Venezuela,
and 4 to 6 ft elsewhere. 
.MON...Gulf of Venezuela, E winds 10 to 15 kt, diminishing to
less than 10 kt in the afternoon,Seas 3 ft in the morning,
subsiding to 2 ft or less. Elsewhere, SE winds 10 to 20 kt,Seas
4 to 6 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 2 ft or less Gulf of
Venezuela, and 4 to 6 ft elsewhere. 
.TUE...E winds 10 to 15 kt Gulf of Venezuela, and E 15 to 25 kt
elsewhere. Seas 2 ft or less Gulf of Venezuela, and 5 to 7 ft
elsewhere. 

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

.TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. 
.FRI...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.SAT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN...SE winds 10 to 20 kt. Seas 3 to 5 ft. 
.SUN NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...E winds 10 to 15 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 5 to 7 ft. 
.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.SAT...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.SAT NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. 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 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE...E winds 10 to 15 kt. Seas 3 to 5 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Tropical Storm Isaias near 19.5N 70.6W 1003 mb at 5 
PM EDT moving NW at 17 kt. Maximum sustained winds 50 kt gusts 60
kt. Isaias will move to 20.8N 72.7W Fri morning, 22.7N 75.1W Fri
afternoon, strengthen to a hurricane near 24.5N 77.1W Sat 
morning, 26.1N 78.5W Sat afternoon, 27.7N 79.5W Sun morning, and 
29.2N 79.7W Sun afternoon. Isaias will change little in intensity
as it moves to near 33.3N 78.0W Mon afternoon. Very large seas 
are expected over a large portion of the SW N Atlantic waters as
the center of Isaias moves near the SE Bahamas by late tonight. 
Isaias is forecast to be near the Central Bahamas Fri night and 
move near or over the NW Bahamas and near South Florida on Sat.

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

...TROPICAL STORM WARNING...

.TONIGHT...S winds 10 to 20 kt. Seas 3 to 5 ft. 
.FRI...S winds 10 to 20 kt. Seas 6 to 8 ft. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 10 to
20 kt. Seas 7 to 10 ft. 
.SAT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 20 to
30 kt, increasing to 30 to 40 kt in the afternoon. Seas 8 to
11 ft. 
.SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. SE winds 55 to
65 kt. Seas 9 to 14 ft. 
.SUN...HURRICANE CONDITIONS POSSIBLE. 
.SUN NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.MON...HURRICANE CONDITIONS POSSIBLE. 
.MON NIGHT...S winds 10 to 20 kt. Seas 6 to 8 ft. 
.TUE...S winds 10 to 20 kt. Seas 4 to 6 ft. 

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

.TONIGHT...SE winds 10 to 20 kt. Seas 6 to 9 ft. 
.FRI...SE winds 10 to 20 kt. Seas 7 to 10 ft. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 15 to
25 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 8 to 11 ft W
of 70W, and 5 to 7 ft elsewhere. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 15 to 25 kt
W of 70W, and SE 10 to 15 kt elsewhere. Seas 7 to 10 ft W of
70W, and 5 to 6 ft elsewhere. 
.SAT NIGHT...SE winds 15 to 25 kt W of 70W, and SE 10 to 15 kt
elsewhere. Seas 6 to 9 ft W of 70W, and 5 to 6 ft elsewhere. 
.SUN...SE winds 15 to 25 kt W of 70W, and SE 10 to 15 kt
elsewhere. Seas 5 to 7 ft. 
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. 
.MON NIGHT...SE winds 10 to 20 kt. Seas 5 to 7 ft. 
.TUE...SE winds 10 to 20 kt. Seas 5 to 7 ft. 

Bahamas N of 22N

...HURRICANE WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS. E winds 25 to 35 kt,
increasing to 35 to 45 kt after midnight. Seas 6 to 8 ft. 
.FRI...TROPICAL STORM CONDITIONS EXPECTED. NE winds 45 to
55 kt. Seas 8 to 11 ft. 
.FRI NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 55 to
65 kt. Seas 7 to 10 ft. 
.SAT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 55 to
65 kt. Seas 6 to 9 ft. 
.SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. SE winds 55 to
65 kt, diminishing to 35 to 45 kt after midnight. Seas 5 to
7 ft. 
.SUN...SE winds 20 to 30 kt, diminishing to 10 to 20 kt in the
afternoon. Seas 4 to 6 ft. 
.SUN NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 ft. 
.TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

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

...TROPICAL STORM WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to
40 kt W of 70W, and E 25 to 35 kt elsewhere. Seas 10 to 15 ft. 
.FRI...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to 40 kt
W of 70W, and E 20 to 30 kt elsewhere. Seas 12 to 17 ft W of
70W, and 8 to 11 ft elsewhere. 
.FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 25 to
35 kt W of 70W, and E 10 to 20 kt elsewhere. Seas 10 to 15 ft W
of 70W, and 6 to 9 ft elsewhere. 
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 15 to 25 kt
W of 70W, and E 10 to 20 kt elsewhere. Seas 8 to 11 ft W of 70W,
and 6 to 7 ft elsewhere. 
.SAT NIGHT...SE winds 15 to 25 kt W of 70W, and E 10 to 15 kt
elsewhere. Seas 6 to 7 ft. 
.SUN...E winds 15 to 25 kt. Seas 5 to 6 ft. 
.SUN NIGHT...E winds 10 to 15 kt W of 70W, and E 10 to 20 kt
elsewhere. Seas 5 to 6 ft. 
.MON...SE winds 10 to 15 kt W of 70W, and E 15 to 25 kt
elsewhere. Seas 5 to 6 ft W of 70W, and 6 to 8 ft elsewhere. 
.MON NIGHT...E winds 10 to 15 kt W of 70W, and SE 15 to 25 kt
elsewhere. Seas 5 to 6 ft W of 70W, and 6 to 8 ft elsewhere. 
.TUE...SE winds 10 to 20 kt. Seas 6 to 8 ft. 

ATLC waters S of 22N W of 65W

...TROPICAL STORM WARNING...

.TONIGHT...TROPICAL STORM CONDITIONS. E winds 45 to 55 kt. Seas
13 to 18 ft. 
.FRI...TROPICAL STORM CONDITIONS EXPECTED. SE winds 45 to
55 kt. Seas 9 to 14 ft. 
.FRI NIGHT...SE winds 15 to 25 kt. Seas 7 to 10 ft. 
.SAT...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 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...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...SE winds 10 to 20 kt. Seas 4 to 6 ft. 

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

.TONIGHT...E winds 15 to 20 kt. Seas 7 to 10 ft. 
.FRI...E winds 15 to 20 kt. Seas 7 to 8 ft. 
.FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 7 ft. 
.SAT...E winds 10 to 20 kt. Seas 6 to 7 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 7 ft. 
.SUN...E winds 15 to 25 kt. Seas 6 to 8 ft. 
.SUN NIGHT...SE winds 15 to 25 kt. Seas 6 to 8 ft. 
.MON...SE winds 10 to 20 kt. Seas 6 to 8 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. 
.TUE...E winds 10 to 15 kt. Seas 5 to 6 ft.