000
FZNT31 KNHC 270310
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
1110 PM EDT Sun Sep 26 2021

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 Sam near 14.7N 50.8W 943 mb at 11 PM EDT
moving NW at 6 kt. Maximum sustained winds 125 kt gusts 150 kt.
Sam will move to 15.3N 51.6W Mon morning, 16.2N 52.8W Mon
evening, 17.0N 53.9W Tue morning, 17.8N 55.0W Tue evening, 18.7N
56.3W Wed morning, and 20.0N 58.0W Wed evening. Sam will change
little in intensity as it moves near 23.4N 61.0W late Thu.
Meanwhile, moderate trades will continue over much of the
Caribbean through Tue. Fresh trades over the south- central
Caribbean will diminish to gentle to moderate speeds by Tue.
Mainly gentle trades will be over the rest of the Caribbean
through Thu, while fresh trades will follow in the wake of Sam
across the Tropical N Atlantic waters. Swells generated by Sam
are forecast to reach the Lesser Antilles by late Mon into Tue. 

NW Caribbean W of 85W

.OVERNIGHT...E winds 10 to 15 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, building to
3 ft after midnight. 
.TUE...E winds 10 to 15 kt. Seas 3 ft. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft. 
.WED...E winds less than 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less. 
.WED NIGHT...E winds 10 to 15 kt. Seas 2 ft or less.
.THU...E winds less than 10 kt. Seas 2 ft or less. 
.THU NIGHT...E winds 10 to 15 kt. Seas 2 ft or less, building to
3 ft after midnight. 
.FRI...NE winds less than 10 kt. Seas 3 ft. 

Caribbean N of 15N between 72W and 85W

.OVERNIGHT...NE winds 10 to 15 kt. Seas 3 ft. 
.MON...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less, building
to 3 ft after midnight. 
.TUE...E winds 10 to 15 kt. Seas 3 ft in the morning, subsiding
to 2 ft or less. 
.TUE NIGHT...S of 18N, E winds less than 10 kt, increasing to
10 to 15 kt after midnight. Elsewhere, NE winds 10 to 15 kt.
Seas 2 ft or less. 
.WED...S of 18N, E winds 10 to 15 kt, diminishing to less than
10 kt in the afternoon. Elsewhere, E winds less than 10 kt. Seas
2 ft or less. 
.WED NIGHT...E winds less than 10 kt. Seas 2 ft or less. 
.THU...E winds less than 10 kt. Seas 2 ft or less. 
.THU NIGHT...E winds less than 10 kt S of 18N, and NE 10 to
15 kt elsewhere. Seas 2 ft or less. 
.FRI...S of 18N, E winds less than 10 kt. Elsewhere, E winds
10 to 15 kt, diminishing to less than 10 kt in the afternoon.
Seas 2 ft or less. 

Caribbean from 11N to 15N W of 72W

.OVERNIGHT...NE winds 10 to 20 kt. Seas 4 to 5 ft. 
.MON...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON NIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.TUE...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.WED...E winds 10 to 15 kt. Seas 3 ft. 
.WED NIGHT...Within 90 nm of coast of Colombia, E winds less
than 10 kt. Elsewhere, NE winds 10 to 15 kt, diminishing to less
than 10 kt after midnight. Seas 3 ft. 
.THU...E winds less than 10 kt. Seas 3 ft. 
.THU NIGHT...E winds less than 10 kt within 90 nm of coast of
Colombia, and NE 10 to 15 kt elsewhere. Seas 3 ft. 
.FRI...E winds less than 10 kt. Seas 3 ft. 

SW Caribbean S of 11N

.OVERNIGHT...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.MON...NE winds 10 to 20 kt. Seas 3 to 5 ft. 
.MON NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. 
.TUE...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE NIGHT...NW winds less than 10 kt. Seas 3 to 4 ft. 
.WED...NW winds less than 10 kt. Seas 3 ft. 
.WED NIGHT...Variable winds less than 10 kt. Seas 3 ft in the
evening, subsiding to 2 ft or less. 
.THU...Variable winds less than 10 kt. Seas 2 ft or less. 
.THU NIGHT...Variable winds less than 10 kt, becoming NW less
than 10 kt after midnight. Seas 2 ft or less. 
.FRI...NW winds less than 10 kt, shifting to SW in the
afternoon. Seas 2 ft or less. 

Caribbean between 64W and 72W

.OVERNIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.MON...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.TUE...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.TUE NIGHT...E winds 10 to 20 kt. Seas 3 to 4 ft. 
.WED...Gulf of Venezuela, E winds 10 to 15 kt, shifting to S in
the afternoon. Elsewhere, E winds 10 to 15 kt. Seas 2 ft or less
Gulf of Venezuela, and 3 to 4 ft elsewhere. 
.WED NIGHT...E winds 10 to 15 kt. Seas 2 ft or less Gulf of
Venezuela, and 3 to 4 ft elsewhere. 
.THU...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. 
.THU NIGHT...E 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. 
.FRI...Gulf of Venezuela, SE winds less than 10 kt, shifting to
NE in the afternoon. Elsewhere, E winds 10 to 15 kt. 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

...HURRICANE WARNING...

.OVERNIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.MON NIGHT...HURRICANE CONDITIONS POSSIBLE. E winds 10 to
20 kt, becoming NE 20 to 30 kt after midnight. Seas 5 to 7 ft. 
.TUE...HURRICANE CONDITIONS POSSIBLE. NE winds 20 to 30 kt,
increasing to 35 to 45 kt in the afternoon. Seas 7 to 10 ft. 
.TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. N winds 90 to
110 kt. Seas 8 to 13 ft. 
.WED...HURRICANE CONDITIONS POSSIBLE. 
.WED NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. 
.THU NIGHT...SE winds 10 to 20 kt. Seas 5 to 7 ft. 
.FRI...E winds 10 to 20 kt. Seas 5 to 7 ft. 

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

.OVERNIGHT...E winds less than 10 kt. Seas 4 to 6 ft. 
.MON...E winds less than 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 4 to 6 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.TUE...SE winds 10 to 20 kt. Seas 4 to 6 ft. 
.TUE NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED...SE winds 10 to 15 kt. Seas 4 to 6 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.THU...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.THU NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI...E winds 10 to 20 kt. Seas 5 to 7 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A cold front is pressing southward off the Florida 
coast with a pre-frontal trough stretching from 30N69W to
24N77W. This front will weaken by late Mon into early Tue. 
Expect showers and thunderstorms along this boundary through Mon 
night. Gentle to moderate winds will prevail through most of the 
week. Stronger high pressure will build southward over the NW and
north- central offshore waters late in the week, bringing 
moderate to fresh winds especially off the Florida coast. 
Hurricane Sam near 14.7N 50.8W 943 mb at 11 PM EDT moving NW at 6
kt. Maximum sustained winds 125 kt gusts 150 kt. Sam is forecast
to continue on its current motion over the next few days as it 
slowly weakens reaching near 28N63W by late Fri, with maximum 
sustained winds 105 kt gusts 130 kt. Swells generated by Sam are 
expected to spread westward across the forecast waters late in 
the week.

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

.OVERNIGHT...NE winds 10 kt. Seas 4 to 5 ft. 
.MON...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.TUE NIGHT...E winds less than 10 kt. Seas 3 ft. 
.WED...NE winds less than 10 kt. Seas 3 ft. 
.WED NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. 
.THU...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.FRI...NE winds 10 to 20 kt. Seas 4 to 6 ft. 

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

.OVERNIGHT...N winds 10 to 15 kt W of 70W, and W less than 10 kt
elsewhere. Seas 3 to 5 ft. 
.MON...NE winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON NIGHT...NE winds 10 to 15 kt W of 70W, and E less than
10 kt elsewhere. Seas 3 to 5 ft. 
.TUE...NE winds 10 to 15 kt W of 70W, and E less than 10 kt
elsewhere. Seas 3 to 4 ft. 
.TUE NIGHT...W of 70W, NE winds 10 to 15 kt, diminishing to less
than 10 kt after midnight. Elsewhere, SE winds less than 10 kt.
Seas 3 to 4 ft. 
.WED...NE winds less than 10 kt W of 70W, and Variable less than
10 kt elsewhere. Seas 3 to 4 ft. 
.WED NIGHT...NE winds 10 to 15 kt W of 70W, and E less than
10 kt elsewhere. Seas 3 to 5 ft. 
.THU...NE winds 10 to 15 kt W of 70W, and E less than 10 kt
elsewhere. Seas 3 to 5 ft. 
.THU NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.FRI...HURRICANE CONDITIONS POSSIBLE. 

Bahamas N of 22N

.OVERNIGHT...NE winds 10 to 15 kt. Seas 3 ft. 
.MON...NE winds 10 to 15 kt. Seas 3 ft in the morning, subsiding
to 2 ft or less. 
.MON NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. 
.TUE...NE winds 10 to 15 kt. Seas 3 ft in the morning, subsiding
to 2 ft or less. 
.TUE NIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. 
.WED...E winds less than 10 kt, shifting to NE in the afternoon.
Seas 2 ft or less. 
.WED NIGHT...NE winds 10 to 15 kt. Seas 3 ft. 
.THU...NE winds 10 to 15 kt. Seas 3 ft. 
.THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI...NE winds 10 to 15 kt. Seas 3 to 5 ft. 

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

.OVERNIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. 
.MON...W of 70W, NE winds less than 10 kt, increasing to 10 to
15 kt in the afternoon. Elsewhere, Variable winds less than
10 kt. Seas 3 to 4 ft. 
.MON NIGHT...E winds 10 to 15 kt W of 70W, and E less than 10 kt
elsewhere. Seas 3 to 4 ft. 
.TUE...E winds 10 to 15 kt W of 70W, and SE less than 10 kt
elsewhere. Seas 3 to 4 ft. 
.TUE NIGHT...E winds 10 to 15 kt W of 70W, and SE less than
10 kt elsewhere. Seas 3 to 5 ft. 
.WED...W of 70W, E winds less than 10 kt, increasing to 10 to
15 kt in the afternoon. Elsewhere, SE winds less than 10 kt.
Seas 4 to 5 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.THU...TROPICAL STORM CONDITIONS POSSIBLE. 
.THU NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.FRI...HURRICANE CONDITIONS POSSIBLE. 

ATLC waters S of 22N W of 65W

.OVERNIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON...E winds less than 10 kt. Seas 3 ft. 
.MON NIGHT...E winds less than 10 kt. Seas 2 ft or less,
building to 3 to 4 ft after midnight. 
.TUE...E winds less than 10 kt. Seas 3 to 4 ft. 
.TUE NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. 
.WED...E winds less than 10 kt. Seas 3 to 4 ft. 
.WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.THU...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. 
.FRI...SE winds 10 to 20 kt. Seas 5 to 7 ft. 

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

.OVERNIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON...E winds 10 to 15 kt. Seas 5 to 7 ft. 
.MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 10 to
20 kt. Seas 5 to 7 ft. 
.TUE...HURRICANE CONDITIONS POSSIBLE. E winds 20 to 30 kt. Seas
6 to 9 ft. 
.TUE NIGHT...HURRICANE CONDITIONS POSSIBLE. E winds 20 to
30 kt, increasing to 35 to 45 kt after midnight. Seas 7 to
10 ft, building to 11 to 16 ft after midnight. 
.WED...HURRICANE CONDITIONS POSSIBLE. 
.WED NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.THU...HURRICANE CONDITIONS POSSIBLE. 
.THU NIGHT...HURRICANE CONDITIONS POSSIBLE. 
.FRI...TROPICAL STORM CONDITIONS POSSIBLE.