000
FZNT31 KNHC 310916
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
516 AM EDT Fri Jul 31 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...Hurricane Isaias near 20.9N 73.3W 990 mb at 0900 UTC
moving NW at 15 kt. Maximum sustained winds 70 kt gusts 85 kt.
Isaias will continue NW and reach the central Bahamas near 22.3N
75.0W this afternoon, then continue NNW through the NW Bahamas
and near SE Florida tonight through Sat before moving N and away
from the region Sun through Mon. Strong winds and high seas will
prevail this morning through the Mona Passage, Windward Passage.
Fresh to strong flow will persist south of Hispaniola into Fri
and in the lee of eastern Cuba. 

NW Caribbean W of 85W

.TODAY...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.TONIGHT...NE winds 10 to 15 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, diminishing to less than 10 kt in
the afternoon. Seas 3 to 4 ft. 
.SUN NIGHT...E winds less than 10 kt. Seas 3 ft. 
.MON...E winds less than 10 kt. Seas 3 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 ft. 
.TUE...E winds less than 10 kt. Seas 3 ft. 

Caribbean N of 15N between 72W and 85W

.TODAY...S of 18N, E winds 10 to 20 kt. Elsewhere, NE winds
20 to 30 kt, diminishing to 10 to 20 kt in the afternoon. Seas
5 to 7 ft. 
.TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.SAT...E winds 10 to 20 kt. Seas 5 to 7 ft S of 18N, and 3 to
5 ft elsewhere. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 4 to 6 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 S of 18N, and
3 ft elsewhere. 
.MON...E winds 10 to 20 kt. Seas 3 to 5 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and
3 ft elsewhere. 
.TUE...E winds 10 to 20 kt. Seas 4 to 6 ft S of 18N, and 3 ft
elsewhere. 

Caribbean from 11N to 15N W of 72W

.TODAY...N winds 10 to 20 kt. Seas 4 to 6 ft. 
.TONIGHT...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...NE winds 10 to 20 kt. Seas 5 to 7 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 4 to 6 ft. 
.MON NIGHT...NE winds 10 to 20 kt. Seas 4 to 5 ft. 
.TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. 

SW Caribbean S of 11N

.TODAY...NW winds less than 10 kt. Seas 3 to 5 ft. 
.TONIGHT...N winds less than 10 kt. Seas 3 to 5 ft. 
.SAT...NW winds less than 10 kt. Seas 3 to 5 ft. 
.SAT NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. 
.SUN...N winds less than 10 kt. Seas 3 to 4 ft. 
.SUN NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. 
.TUE...NE winds less than 10 kt. Seas 3 to 4 ft. 

Caribbean between 64W and 72W

.TODAY...SE winds less than 10 kt Gulf of Venezuela, and E 15 to
25 kt elsewhere. Seas 3 ft Gulf of Venezuela, and 6 to 9 ft
elsewhere. 
.TONIGHT...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 6 to 8 ft
elsewhere. 
.SAT...E winds 10 to 20 kt. Seas 3 to 5 ft Gulf of Venezuela,
and 5 to 7 ft elsewhere. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of
Venezuela, and 5 to 7 ft elsewhere. 
.SUN...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela,
and 4 to 6 ft elsewhere. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON...Gulf of Venezuela, E winds 10 to 15 kt, shifting to S in
the afternoon. Elsewhere, E winds 10 to 20 kt. Seas 3 ft Gulf of
Venezuela, and 4 to 6 ft elsewhere. 
.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 less than 10 kt Gulf of Venezuela, and E 10 to
20 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

.TODAY...E winds 10 to 20 kt. Seas 6 to 8 ft. 
.TONIGHT...E winds 10 to 15 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...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.SUN NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON...SE 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 5 ft. 

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

.TODAY...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.SAT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.SUN...SE winds 10 to 15 kt. Seas 4 to 6 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 3 to 5 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...Hurricane Isaias near 20.9N 73.3W 990 mb at 0900 UTC
moving NW at 15 kt. Maximum sustained winds 70 kt gusts 85 kt. 
Isaias will continue NW and reach the central Bahamas near 22.3N
75.0W this afternoon, then continue NNW through the NW Bahamas 
and near SE Florida tonight and Sat, reaching 25.7N 78.5W Sat 
afternoon, then turn more N and reach 28.8N 79.6W Sun afternoon
before exiting to the NNE Mon and Tue. Very large seas in SE
swell are expected over a large portion of the SW North Atlantic
waters west of 70W and through the Bahamas waters today and
tonight. 

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

...HURRICANE WARNING...

.TODAY...S winds 10 to 20 kt. Seas 5 to 7 ft. 
.TONIGHT...SE winds 15 to 25 kt. Seas 7 to 10 ft. 
.SAT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 20 to
30 kt, becoming E 30 to 40 kt in the afternoon. Seas 8 to 12 ft.
.SAT NIGHT...HURRICANE CONDITIONS EXPECTED. E winds 50 to
60 kt, becoming SE 60 to 70 kt after midnight. Seas 10 to 15 ft.
.SUN...HURRICANE CONDITIONS POSSIBLE. SE winds 60 to 70 kt.
Seas 13 to 18 ft. 
.SUN NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.MON...TROPICAL STORM CONDITIONS POSSIBLE. 
.MON NIGHT...S winds 10 to 20 kt. Seas 6 to 9 ft. 
.TUE...S winds 10 to 15 kt. Seas 4 to 6 ft. 

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

.TODAY...SE winds 10 to 20 kt. Seas 7 to 10 ft W of 70W, and
6 to 8 ft elsewhere. 
.TONIGHT...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 20 to 30 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...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 20 to
30 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. 
.SUN...SE winds 20 to 30 kt W of 70W, and SE 10 to 15 kt
elsewhere. Seas 6 to 8 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...

.TODAY...HURRICANE CONDITIONS. E winds 50 to 60 kt, becoming NE
65 to 75 kt in the afternoon. Seas 9 to 14 ft. 
.TONIGHT...HURRICANE CONDITIONS EXPECTED. E winds 65 to 75 kt.
Seas 8 to 13 ft. 
.SAT...HURRICANE CONDITIONS EXPECTED. SE winds 65 to 75 kt.
Seas 7 to 10 ft. 
.SAT NIGHT...HURRICANE CONDITIONS EXPECTED. SE winds 60 to
70 kt. Seas 5 to 7 ft. 
.SUN...TROPICAL STORM CONDITIONS POSSIBLE. 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 5 ft. 
.MON...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE...SE winds 10 to 15 kt. Seas 3 ft. 

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

...TROPICAL STORM WARNING...

.TODAY...TROPICAL STORM CONDITIONS. E winds 30 to 40 kt W of
70W, and E 20 to 30 kt elsewhere. Seas 13 to 18 ft W of 70W, and
8 to 11 ft elsewhere. 
.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 20 to
30 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 20 to 30 kt
W of 70W, and E 10 to 20 kt elsewhere. W of 70W, seas 9 to
14 ft, subsiding to 8 to 11 ft in the afternoon. Elsewhere, seas
6 to 8 ft. 
.SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 20 to
30 kt W of 70W, and E 10 to 15 kt elsewhere. Seas 6 to 8 ft. 
.SUN...E winds 15 to 25 kt. Seas 6 to 7 ft. 
.SUN NIGHT...E winds 10 to 20 kt. Seas 6 ft. 
.MON...E 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 9 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 9 ft elsewhere. 
.TUE...SE winds 10 to 20 kt. Seas 6 to 8 ft. 

ATLC waters S of 22N W of 65W

...HURRICANE WARNING...

.TODAY...HURRICANE CONDITIONS. SE winds 60 to 70 kt. Seas 10 to
15 ft. 
.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 20 to
30 kt. Seas 7 to 10 ft. 
.SAT...E winds 10 to 20 kt. Seas 6 to 8 ft. 
.SAT NIGHT...E winds 10 to 20 kt. Seas 5 to 7 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...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

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

.TODAY...E winds 15 to 20 kt. Seas 7 to 8 ft. 
.TONIGHT...E winds 10 to 20 kt. Seas 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 8 ft. 
.SUN...E winds 15 to 25 kt. Seas 6 to 9 ft. 
.SUN NIGHT...SE winds 20 to 30 kt. Seas 6 to 9 ft. 
.MON...SE winds 10 to 20 kt. Seas 6 to 8 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. 
.TUE...E winds 10 to 15 kt. Seas 4 to 5 ft.