Offshore Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
000
FZNT31 KNHC 221457
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1024 AM EDT Fri Sep 22 2017

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 ATLC from 07N to 19N
between 55W and 64W

.SYNOPSIS...Hurricane Maria continues to move away from area.
Moderate to locally fresh E to SE winds expected E of 70W
through Mon. Light N winds W of 70W will gradually become E to
SE through Sat then begin to increase on Sun. Strong nocturnal
trades will resume along the NW coast of Venezuela and NE coast
of Colombia on Mon and Tue evening, as well as across the Gulf
of Honduras.

NW Caribbean W of 85W

.THIS AFTERNOON...E winds less than 10 kt. Seas 3 ft, subsiding
to 2 ft or less.
.TONIGHT...NE winds less than 10 kt. Seas 2 ft or less.
.SAT...E winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...E winds less than 10 kt. Seas 2 ft or less.
.SUN...E winds less than 10 kt. Seas 2 ft or less.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 ft or less.
.MON...SE winds 10 to 15 kt. Seas 3 to 4 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.
.TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.

Caribbean N of 15N between 72W and 85W

.THIS AFTERNOON...NE winds less than 10 kt. Seas 2 ft or less.
.TONIGHT...Variable winds less than 10 kt, becoming E less than
10 kt after midnight. Seas 2 ft or less.
.SAT...Variable winds less than 10 kt. Seas 2 ft or less.
.SAT NIGHT...Variable winds less than 10 kt, becoming SE less
than 10 kt after midnight. Seas 2 ft or less.
.SUN...SE winds less than 10 kt. Seas 2 ft or less, building to
3 ft in the afternoon.
.SUN NIGHT...SE winds less than 10 kt, shifting to E after
midnight. Seas 3 to 4 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 4 to 6 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.

Caribbean from 11N to 15N W of 72W

.THIS AFTERNOON...Variable winds less than 10 kt. Seas 3 to
4 ft.
.TONIGHT...Variable winds less than 10 kt. Seas 3 ft.
.SAT...Variable winds less than 10 kt. Seas 3 ft.
.SAT NIGHT...NE winds 10 kt within 90 nm of coast of Colombia,
and Variable less than 10 kt elsewhere. Seas 2 ft or less.
.SUN...E winds less than 10 kt. Seas 3 ft.
.SUN NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 3 to 5 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...SE winds 10 to 20 kt. Seas 4 to 6 ft.
.TUE NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft.

SW Caribbean S of 11N

.THIS AFTERNOON...Variable winds less than 10 kt. Seas 3 to
4 ft.
.TONIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.SAT...Variable winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less.
.SAT NIGHT...Variable winds less than 10 kt, becoming E less
than 10 kt after midnight. Seas 2 ft or less.
.SUN...SE winds less than 10 kt. Seas 2 ft or less.
.SUN NIGHT...Variable winds less than 10 kt, becoming SE less
than 10 kt after midnight. Seas 2 ft or less.
.MON...S winds less than 10 kt in the morning, becoming variable
winds less than 10 kt. Seas 2 ft or less.
.MON NIGHT...Variable winds less than 10 kt, becoming SW less
than 10 kt after midnight. Seas 2 ft or less.
.TUE...SW winds less than 10 kt. Seas 2 ft or less, building to
3 ft in the afternoon.
.TUE NIGHT...NW winds less than 10 kt. Seas 3 ft.

Caribbean between 64W and 72W

.THIS AFTERNOON...Variable winds less than 10 kt Gulf of
Venezuela, and SE 10 to 20 kt elsewhere. Seas 2 ft or less Gulf
of Venezuela, and 4 to 6 ft elsewhere.
.TONIGHT...SE winds 10 to 15 kt. Seas 2 ft or less Gulf of
Venezuela, and 4 to 6 ft elsewhere.
.SAT...Variable winds less than 10 kt Gulf of Venezuela, and SE
10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and
4 to 6 ft elsewhere.
.SAT NIGHT...NE winds less than 10 kt Gulf of Venezuela, and E
10 to 20 kt elsewhere. Seas 2 ft or less Gulf of Venezuela, and
4 to 6 ft elsewhere.
.SUN...SE winds 10 to 20 kt. Seas 5 to 7 ft.
.SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.
.MON...E winds 10 to 20 kt. Seas 5 to 7 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.TUE...E winds 10 to 20 kt. Seas 6 to 8 ft.
.TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft.

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

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.TONIGHT...SE winds less than 10 kt, shifting to E after
midnight. Seas 5 to 7 ft.
.SAT...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.SAT NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt
after midnight. Seas 5 to 7 ft.
.SUN...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.MON...E winds 10 to 15 kt. Seas 5 to 7 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft.
.TUE...E winds 10 to 15 kt. Seas 6 to 8 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 9 ft.

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

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SAT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SUN...E winds 10 to 15 kt. Seas 5 to 7 ft.
.SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft.
.MON...E winds 10 to 20 kt. Seas 5 to 7 ft.
.MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft.
.TUE...E winds 10 to 20 kt. Seas 6 to 8 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft.

SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS

.SYNOPSIS...Hurricane Maria centered at 22.3N 71.0W 958 mb at 11
AM EDT moving NW or 325 degrees at 7 kt. Maximum sustained winds
are 110 kt with gusts to 135 kt. Maria is forecast to weaken to
105 kt gusts to 130 kt reaching near 23.5N 71.5W at 8 PM EDT this
evening, weaken to 100 kt gusts to 120 kt near 25.0N 72.0W at 8
AM EDT Sat, reach near 26.5N 72.3W at 8 PM EDT Sat, weaken to 95
kt gusts to 115 kt near 27.9N 72.3W at 8 AM EDT Sun, weaken to
85 kt gusts to 105 kt near 30.0N 71.6W at 8 AM EDT Mon, and
weaken to 75 kt gusts to 90 kt near 32.0N 71.01W at 8 AM EDT
Tue. A trough will extend SW from the N-central waters to the SE
Bahamas in the wake of Maria.

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

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas 8 to 11 ft.
.TONIGHT...NE winds 10 to 20 kt. Seas 8 to 13 ft.
.SAT...NE winds 10 to 20 kt. Seas 11 to 16 ft.
.SAT NIGHT...NE winds 10 to 20 kt. Seas 12 to 17 ft.
.SUN...N winds 10 to 20 kt. Seas 12 to 17 ft.
.SUN NIGHT...N winds 10 to 20 kt. Seas 11 to 15 ft.
.MON...N winds 10 to 20 kt. Seas 10 to 14 ft.
.MON NIGHT...N winds 10 to 15 kt. Seas 9 to 13 ft.
.TUE...NW winds 10 to 15 kt. Seas 8 to 11 ft.
.TUE NIGHT...W winds 10 to 15 kt. Seas 8 to 11 ft.

ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W

...HURRICANE WARNING...

.THIS AFTERNOON...E winds 10 to 15 kt. Seas 9 to 14 ft.
.TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W of 70W, NE
winds 10 to 20 kt, increasing to 20 to 30 kt after midnight,Seas
12 to 15 ft, building to 13 to 18 ft after midnight. Elsewhere,
E winds 15 to 25 kt,Seas 10 to 14 ft.
.SAT...TROPICAL STORM CONDITIONS EXPECTED. W of 70W, NE winds 25
to 35 kt, increasing to 40 to 50 kt in the afternoon,Seas 16 to
21 ft, building to 16 to 26 ft in the afternoon.
Elsewhere, SE winds 20 to 30 kt,Seas 11 to 16 ft.
.SAT NIGHT...HURRICANE CONDITIONS EXPECTED. NE winds 70 to 90 kt
W of 70W, and SE 25 to 35 kt elsewhere. W of 70W, seas 20 to 30
ft, building to 23 to 33 ft after midnight. Elsewhere, seas 12
to 17 ft.
.SUN...HURRICANE CONDITIONS POSSIBLE. NE winds 70 to 90 kt W of
70W, and SE 30 to 40 kt elsewhere. Seas 22 to 32 ft W of 70W,
and 13 to 18 ft elsewhere.
.SUN NIGHT...HURRICANE CONDITIONS POSSIBLE.
.MON...HURRICANE CONDITIONS POSSIBLE.
.MON NIGHT...HURRICANE CONDITIONS POSSIBLE.
.TUE...HURRICANE CONDITIONS POSSIBLE.
.TUE NIGHT...HURRICANE CONDITIONS POSSIBLE.

Bahamas N of 22N

...TROPICAL STORM WARNING...

.THIS AFTERNOON...
.THIS AFTERNOON...TROPICAL STORM CONDITIONS. NE winds 40 to 50
kt. Seas 6 to 8 ft.
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. NE winds 35 to 45
kt, diminishing to 25 to 35 kt after midnight. Seas 7 to 10 ft.
.SAT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 20 to 30 kt.
Seas 7 to 10 ft.
.SAT NIGHT...N winds 20 to 30 kt. Seas 6 to 9 ft.
.SUN...NW winds less than 10 kt. Seas 6 to 9 ft.
.SUN NIGHT...NW winds less than 10 kt. Seas 6 to 8 ft.
.MON...W winds less than 10 kt. Seas 5 to 7 ft.
.MON NIGHT...Variable winds less than 10 kt. Seas 5 to 7 ft.
.TUE...Variable winds less than 10 kt. Seas 4 to 6 ft.
.TUE NIGHT...Variable winds less than 10 kt, becoming NE less
than 10 kt after midnight. Seas 3 to 5 ft.

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

...HURRICANE WARNING...

.THIS AFTERNOON...HURRICANE CONDITIONS. W of 70W, NE winds
75 to 95 kt. Elsewhere, SE winds 55 to 65 kt, diminishing to 45
to 55 kt in the afternoon. Seas 22 to 32 ft W of 70W, and 13 to
18 ft elsewhere.
.TONIGHT...HURRICANE CONDITIONS EXPECTED. NE winds 75 to 95 kt W
of 70W, and SE 35 to 45 kt elsewhere. Seas 23 to 33 ft W of 70W,
and 13 to 18 ft elsewhere.
.SAT...HURRICANE CONDITIONS EXPECTED. W of 70W, N winds 80 to 90
kt, shifting to W in the afternoon. Elsewhere, SE winds 30 to 40
kt. Seas 23 to 33 ft W of 70W, and 12 to 17 ft elsewhere.
.SAT NIGHT...HURRICANE CONDITIONS EXPECTED. SW winds 80 to 90 kt
W of 70W, and SE 25 to 35 kt elsewhere. W of 70W, seas 20 to 30
ft, subsiding to 16 to 26 ft after midnight. Elsewhere, seas 10
to 15 ft.
.SUN...HURRICANE CONDITIONS POSSIBLE. W of 70W, SW winds 60 to
70 kt, diminishing to 40 to 50 kt in the afternoon. Elsewhere, S
winds 25 to 35 kt. Seas 15 to 20 ft W of 70W, and 9 to 13 ft
elsewhere.
.SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE.
.MON...TROPICAL STORM CONDITIONS POSSIBLE.
.MON NIGHT...SW winds 10 to 20 kt. Seas 8 to 12 ft.
.TUE...SW winds 10 to 15 kt. Seas 7 to 10 ft.
.TUE NIGHT...SW winds 10 to 15 kt, shifting to S after midnight.
Seas 6 to 9 ft.

ATLC waters S of 22N W of 65W

...HURRICANE WARNING...

.THIS AFTERNOON...HURRICANE CONDITIONS. S winds 85 to 95 kt.
Seas 10 to 15 ft.
.TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. S winds 35 to 45
kt, becoming SW 20 to 30 kt after midnight. Seas 9 to 14 ft.
.SAT...SW winds 20 to 30 kt. Seas 7 to 10 ft.
.SAT NIGHT...S winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN...S winds 10 to 20 kt. Seas 6 to 9 ft.
.SUN NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.MON...S winds 10 to 15 kt. Seas 5 to 7 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.TUE...SE winds 10 to 15 kt. Seas 5 to 7 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.

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

.THIS AFTERNOON...SE winds 10 to 15 kt. Seas 6 to 9 ft.
.TONIGHT...SE winds 10 to 15 kt. Seas 7 to 9 ft.
.SAT...SE winds 10 to 15 kt. Seas 7 to 9 ft.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 7 to 8 ft.
.SUN...SE winds 10 to 15 kt. Seas 7 to 8 ft.
.SUN NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft.
.MON...SE winds 10 to 15 kt. Seas 6 to 8 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 7 to 8 ft.
.TUE...E winds 10 to 15 kt. Seas 8 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 7 to 8 ft.



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.