031 
FZNT31 KNHC 230915
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
415 AM EST Thu Feb 23 2023

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...A high pressure ridge between the Bahamas and
Bermuda will help maintain fresh to strong trades across the
central Caribbean for the next several days. Winds will pulse to
gale-force off the coast of Colombia each evening and at night
and ending in the early mornings through Sat night. The coverage
area of the fresh to strong trades is expected to diminish
beginning late Sat night as the high pressure weakens. Fresh to
strong NE to E winds will also occur in the Windward Passage and
lee of Cuba through Sun night. Strong to near gale E to SE winds
in the Gulf of Honduras will continue the next several days.
Looking ahead, large long- period N swell may begin impacting
the tropical N Atlantic zones starting on Sun night. 

NW Caribbean W of 85W

.TODAY...SE winds 10 to 20 kt. Seas 6 to 9 ft. 
.TONIGHT...E winds 15 to 25 kt. Seas 6 to 9 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...E winds 10 to 15 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 20 kt. Seas 5 to 7 ft. 

Caribbean N of 15N between 72W and 85W

.TODAY...E winds 10 to 20 kt. Seas 6 to 9 ft S of 18N, and 4 to
6 ft elsewhere. 
.TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft S of 18N, and
4 to 6 ft elsewhere. 
.FRI...E winds 10 to 20 kt. Seas 6 to 8 ft. 
.FRI NIGHT...E 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 5 to 7 ft. 
.SUN...E winds 10 to 20 kt. Seas 5 to 7 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 

Caribbean from 11N to 15N W of 72W

...GALE WARNING...
..GALE CONDITIONS POSSIBLE POSSIBLE AT NIGHT SAT INTO EARLY SUN 
MORNING...

.THU...Between 72W and 80W, NE to E winds 15 to 25 kt except 30 
to 35 kt S of 13N between 74W and 76W early, then diminishing to 
25 to 30 kt. Seas 8 to 12 ft, except 9 to 13 ft S of 13N between 
74W and 76W. W of 80W, NE to E winds 10 to 20 kt. Seas 7 to 10 
ft.
.TONIGHT...Between 72W and 76W, NE to E winds 25 to 30 kt, 
except 30 to 40 kt within 90 nm of coast of Colombia. Seas 8 to 
11 ft, except 10 to 14 ft within 90 nm of coast of Colombia. 
Between 76W and 80W, NE to E winds 15 to 25 kt W of 78W, and NE 
to E 25 to 30 kt E of 78W. Seas 8 to 12 ft. W of 80W, NE to E 
winds 10 to 20 kt. Seas 7 to 10 ft.
.FRI...Between 72W and 76W, NE to E winds 20 to 30 kt except 30 
to 35 kt within 60 nm of coast of Colombia early. Seas 8 to 12 
ft, except 10 to 14 ft within 60 nm of coast of Colombia early, 
subsiding to 9 to 12 ft. Between 76W and 80W, NE to E winds 15 to
25 kt W of 78W, and NE to E 20 to 30 kt E of 78W. Seas 9 to 14 
ft. W of 80W, NE to E winds 10 to 20 kt. Seas 7 to 11 ft.
.FRI NIGHT...Between 72W and 76W, NE to E winds 20 to 30 kt except 30 
to 35 kt within 60 nm of coast of Colombia. Seas 8 to 11 ft,
except 10 to 14 ft within 60 nm of coast of Colombia. Between 
76W and 80W, NE to E winds 15 to 25 kt W of 78W, and NE to E 20 
to 30 kt E of 78W. Seas 8 to 12 ft. W of 80W, NE to E winds 10 to
20 kt. Seas 7 to 11 ft.
.SAT...Between 72W and 80W, NE to E winds 15 to 25 kt except
30 to 35 kt S of 13N between 74W and 76W early, then diminishing
to 25 to 30 kt. Seas 8 to 12 ft, except 9 to 13 ft S of 13N 
early subsiding to 9 to 11 ft in the afternoon. W of 80W,
NE to E 10 to 20 kt. Seas 8 to 12 ft, except W of 80W 7 to 10 
ft.
.SAT NIGHT...Between 72W and 76W, NE to E winds 20 to 30 kt 
except 30 to 35 kt within 60 nm of coast of Colombia. Seas 8 to 
11 ft, except 9 to 12 ft within 60 nm of coast of Colombia. 
Between 76W and 80W, NE to E winds 15 to 25 kt W of 78W, and NE 
to E 20 to 30 kt E of 78W. Seas 8 to 12 ft. W of 80W, NE to E 
winds 10 to 20 kt. Seas 7 to 11 ft.
.SUN...Between 72W and 80W, NE to E winds 15 to 25 kt except 30 
to 35 kt within 60 nm of coast of Colombia early, then diminishing
to 25 to 30 kt. Seas 8 to 12 ft, except 9 to 13 ft within 60 nm 
of coast of Colombia subsiding to 9 to 11 ft in the afternoon.
W of 80W, E winds 10 to 20 kt. Seas 7 to 10 ft. 
.SUN NIGHT...Between 72W and 80W, NE to E winds 15 to 25 kt except
25 to 30 kt S of 12N between 74W and 76W. Seas 6 to 8 ft, except 
8 to 10 ft S of 12N between 74W and 76W. W of 80W, NE winds 10 
to 20 kt. Seas 6 to 9 ft. 
.MON...E winds 10 to 20 kt. Seas 6 to 9 ft. 
.MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. 

SW Caribbean S of 11N

.TODAY...NE winds 10 to 20 kt. Seas 7 to 10 ft. 
.TONIGHT...NE winds 10 to 20 kt. Seas 8 to 11 ft. 
.FRI...NE winds 10 to 20 kt. Seas 8 to 11 ft. 
.FRI NIGHT...NE winds 15 to 25 kt. Seas 8 to 11 ft. 
.SAT...NE winds 10 to 20 kt. Seas 8 to 11 ft. 
.SAT NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. 
.SUN...NE winds 10 to 20 kt. Seas 8 to 11 ft. 
.SUN NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. 
.MON...NE winds 10 to 15 kt. Seas 6 to 9 ft. 
.MON NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. 

Caribbean between 64W and 72W

.TODAY...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft
elsewhere. 
.TONIGHT...E winds 20 to 30 kt Gulf of Venezuela, and NE 10 to
20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft
elsewhere. 
.FRI...NE winds 10 to 20 kt. Seas 3 to 5 ft Gulf of Venezuela,
and 6 to 8 ft elsewhere. 
.FRI NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and NE 10 to
20 kt elsewhere. Seas 3 to 5 ft Gulf of Venezuela, and 6 to 8 ft
elsewhere. 
.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 5 to 7 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...E winds 10 to 20 kt. Seas 4 to 6 ft. 

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

.TODAY...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.TONIGHT...NE winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. 
.SAT...NE winds 10 to 15 kt. Seas 4 to 5 ft. 
.SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. 
.SUN...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN NIGHT...E winds less than 10 kt. Seas 3 to 5 ft.
.MON...E winds less than 10 kt in the morning, becoming variable
winds less than 10 kt. Seas 5 to 7 ft. 
.MON NIGHT...E winds less than 10 kt. Seas 5 to 7 ft. 

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

.TODAY...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.SAT...NE winds 10 to 15 kt. Seas 4 to 5 ft. 
.SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.SUN...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN NIGHT...E 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 5 to 7 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A high pressure ridge between the Bahamas and
Bermuda will help maintain fresh to strong trades north of 
Hispaniola and gentle to moderate winds elsewhere through Sat 
night. The W end of a weak cold front moving southeastward across
the NE forecast waters will reach from near 26N55W to 25N65W 
this morning and then dissipate by Fri morning. A stronger cold 
front will move across the northern forecast waters Fri night, 
extend from near 28N55W to 27N65W to 31N78W Sat morning, then 
weaken as it reaches from near 23N55W to 24N65W Sun morning, and 
dissipate Sun night. Strong NW winds are likely on Sat across the
NE waters behind the front, with large N swell propagating 
southward E of 65W though Mon night. Looking ahead, another cold 
front may arrive over the NE waters on Sun, causing strong breeze
conditions on both sides of the front north of 27N through Mon 
night. NW swell producing large seas is expected behind this 
front.

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

.TODAY...SW winds 10 to 15 kt. Seas 3 to 4 ft. 
.TONIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI...W winds less than 10 kt. Seas 3 to 4 ft. 
.FRI NIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft.
.SAT...Variable winds less than 10 kt, becoming SW less than
10 kt in the afternoon. Seas 3 to 5 ft. 
.SAT NIGHT...SW winds less than 10 kt. Seas 4 to 6 ft. 
.SUN...W winds 10 kt. Seas 4 to 5 ft. 
.SUN NIGHT...SW winds less than 10 kt. Seas 3 to 4 ft. 
.MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON NIGHT...SW winds 15 to 25 kt. Seas 6 to 8 ft.

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

.TODAY...W of 70W, SW winds 10 to 15 kt. Elsewhere, S winds less
than 10 kt. Seas 3 to 5 ft. 
.TONIGHT...W of 70W, W winds less than 10 kt. Elsewhere, W winds
10 to 15 kt. Seas 3 to 5 ft.
.FRI...W winds less than 10 kt W of 70W, and W 10 to 15 kt
elsewhere. Seas 3 to 5 ft. 
.FRI NIGHT...W of 70W, NW winds less than 10 kt, becoming N
10 to 20 kt late. Elsewhere, NW winds 10 to 15 kt, becoming N 15
to 25 kt late. Seas 4 to 6 ft.
.SAT...NE winds 15 to 25 kt. Seas 5 to 7 ft. 
.SAT NIGHT...SE winds 10 to 15 kt. Seas 6 to 9 ft. 
.SUN...W winds 10 to 20 kt. Seas 6 to 8 ft. 
.SUN NIGHT...NW winds 10 to 20 kt. Seas 6 to 8 ft. 
.MON...W to NW winds 10 to 15 kt. Seas 6 to 8 ft.
.MON NIGHT...SW winds 10 to 20 kt. Seas 5 to 7 ft. 

Bahamas N of 22N

.TODAY...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.TONIGHT...E winds 10 to 15 kt. Seas 3 ft. 
.FRI...E winds 10 to 15 kt. Seas 3 ft. 
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 ft. 
.SAT...E winds 10 to 15 kt. Seas 3 ft. 
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 ft in the evening,
subsiding to 2 ft or less. 
.SUN...E winds less than 10 kt. Seas 2 ft or less. 
.SUN NIGHT...E winds less than 10 kt. Seas 3 ft. 
.MON...SE winds less than 10 kt. Seas 3 ft. 
.MON NIGHT...SE winds 10 to 15 kt. Seas 3 ft. 

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

.TODAY...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. 
.SAT...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.SUN...Variable winds less than 10 kt, becoming W less than
10 kt in the afternoon. Seas 5 to 7 ft. 
.SUN NIGHT...NW winds less than 10 kt. Seas 5 to 7 ft. 
.MON...N winds less than 10 kt. Seas 5 to 7 ft. 
.MON NIGHT...E winds less than 10 kt. Seas 5 to 7 ft. 

ATLC waters S of 22N W of 65W

.TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. 
.FRI...NE winds 10 to 20 kt. Seas 4 to 5 ft. 
.FRI NIGHT...NE winds 10 to 20 kt. Seas 4 to 5 ft. 
.SAT...NE winds 10 to 20 kt. Seas 4 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 5 ft.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.MON...NE winds less than 10 kt. Seas 4 to 6 ft. 
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 

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

.TODAY...NE winds 10 to 15 kt. Seas 4 to 5 ft. 
.TONIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. 
.FRI...NE winds 10 to 15 kt. Seas 4 to 6 ft. 
.FRI NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. 
.SAT...NE winds 10 to 15 kt. Seas 4 to 5 ft. 
.SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. 
.SUN...E winds less than 10 kt in the morning, becoming variable
winds less than 10 kt. Seas 3 to 4 ft. 
.SUN NIGHT...Variable winds less than 10 kt. Seas 6 to 9 ft. 
.MON...Variable winds less than 10 kt, becoming W less than
10 kt in the afternoon. Seas 6 to 8 ft. 
.MON NIGHT...Variable winds less than 10 kt. Seas 6 to 8 ft.