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HF Voice Broadcast (Caribbean/SW Atlantic)



000
FZNT31 KNHC 042056
OFFN20

Marine Weather HF Voice Broadcast
NWS National Hurricane Center Miami, FL
356 PM EST Fri Dec 4 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...The pressure gradient between the Bermuda High and
low pressure over N South America is causing strong trades
across the central Caribbean today. As the Bermuda High retreats
northeastward well north of these waters, a reduced pressure
gradient will weaken the E trades across the Caribbean through
Mon, with peak winds of primarily fresh E trades just north of
Colombia. A cold front should reach the Yucatan Channel on Mon
afternoon, extend from Cuba to Honduras Tue afternoon, and
perhaps move to the SW Caribbean on Wed afternoon. N winds to
increase and seas to build behind the front. 

NW Caribbean W of 85W

.TONIGHT...SE winds 10 to 15 kt, diminishing to less than 10 kt
after midnight. Seas 3 to 5 ft. 
.SAT...E winds less than 10 kt. Seas 3 to 4 ft. 
.SAT NIGHT AND SUN...SE winds less than 10 kt. Seas 3 ft. 
.SUN NIGHT...SE winds less than 10 kt, shifting to SW after
midnight. Seas 2 ft or less. 
.MON THROUGH WED...N winds 10 to 20 kt. Seas 4 to 6 ft. 

Caribbean N of 15N between 72W and 85W

.TONIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.SAT...E winds 10 to 20 kt S of 18N, and E less than 10 kt
elsewhere. Seas 4 to 6 ft. 
.SAT NIGHT AND SUN...E winds 10 to 15 kt S of 18N, and E less
than 10 kt elsewhere. Seas 3 to 5 ft. 
.SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. 
.MON THROUGH WED...NE winds 10 to 20 kt. Seas 4 to 6 ft. 

Caribbean from 11N to 15N W of 72W

.TONIGHT...E winds 20 to 25 kt within 90 nm of coast of
Colombia, and E 10 to 20 kt elsewhere. Seas 6 to 8 ft. 
.SAT...E winds 15 to 25 kt within 90 nm of coast of Colombia,
and E 10 to 20 kt elsewhere. Seas 6 to 8 ft. 
.SAT NIGHT AND SUN...E winds 15 to 25 kt within 90 nm of coast
of Colombia, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft. 
.SUN THROUGH WED...NE winds 10 to 20 kt. Seas 5 to 7 ft. 

SW Caribbean S of 11N

.TONIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. 
.SAT...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.SAT NIGHT AND SUN...N winds 10 to 15 kt. Seas 4 to 6 ft. 
.SUN THROUGH WED...N winds 10 to 20 kt. Seas 4 to 6 ft. 

Caribbean between 64W and 72W

.TONIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to
20 kt elsewhere. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft
elsewhere. 
.SAT...E winds 10 to 15 kt. Seas 3 ft Gulf of Venezuela, and
4 to 6 ft elsewhere. 
.SAT NIGHT AND SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.SUN THROUGH WED...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

.TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. 
.SAT...E winds less than 10 kt. Seas 4 to 6 ft. 
.SAT NIGHT AND SUN...E winds 10 kt. Seas 5 to 7 ft. 
.SUN THROUGH WED...E winds 10 to 15 kt. Seas 5 to 7 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. 
.SAT...E winds 10 to 15 kt. Seas 4 to 6 ft. 
.SAT NIGHT AND SUN...NE winds 10 to 15 kt. Seas 5 to 7 ft. 
.SUN THROUGH WED...E winds 10 to 20 kt. Seas 5 to 7 ft. 

Synopsis for the the SW N Atlantic including the Bahamas

.SYNOPSIS...A weakening stationary front from 24N65W to E Cuba 
will dissipate by Sat. Strong S to SW winds will develop east of
N Florida tonight. A cold front will extend from 31N74W to
central Florida on Sat afternoon, then weaken from 29N65W to the
central Bahamas on Sun afternoon. A developing low pressure
system will sweep a new, strong cold front across the W Atlantic
Mon and Tue. Strong to near gale SW winds ahead of the front and
fresh to strong NW winds behind the front are anticipated before
conditions moderate on Wed.

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

.TONIGHT...SW winds 15 to 25 kt. Seas 6 to 9 ft. 
.SAT...NW winds 10 to 20 kt. Seas 6 to 9 ft. 
.SAT NIGHT...NW winds 10 to 15 kt. Seas 5 to 7 ft. 
.SUN...N winds less than 10 kt in the morning, becoming variable
winds less than 10 kt. Seas 3 to 5 ft. 
.SUN NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON THROUGH WED...NW winds 15 to 25 kt. Seas 5 to 7 ft. 

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

.TONIGHT...SE winds 10 to 20 kt. Seas 5 to 7 ft. 
.SAT...SW winds 10 to 20 kt. Seas 6 to 9 ft. 
.SAT NIGHT AND SUN...NW winds 10 to 20 kt. Seas 6 to 9 ft. 
.SUN THROUGH WED...NW winds 15 to 25 kt. Seas 7 to 10 ft. 

Bahamas N of 22N

.TONIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. 
.SAT...SE winds less than 10 kt, shifting to NW in the
afternoon. Seas 3 to 4 ft. 
.SAT NIGHT...NE winds less than 10 kt. Seas 3 to 4 ft. 
.SUN...E winds less than 10 kt. Seas 3 ft. 
.SUN NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 
.MON THROUGH WED...N winds 10 to 20 kt. Seas 4 to 6 ft. 

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

.TONIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft. 
.SAT...S winds 10 kt. Seas 5 to 7 ft. 
.SAT NIGHT AND SUN...N winds less than 10 kt W of 70W, and SW
10 to 15 kt elsewhere. Seas 5 to 6 ft. 
.SUN THROUGH MON...SW winds 15 to 25 kt. Seas 6 to 8 ft. 
.TUE THROUGH WED...NE winds 10 to 20 kt. Seas 6 to 9 ft. 

ATLC waters S of 22N W of 65W

.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 AND SUN...E winds 10 kt. Seas 4 to 6 ft. 
.SUN THROUGH MON...S winds 10 to 15 kt. Seas 4 to 6 ft. 
.TUE THROUGH WED...E winds 10 to 15 kt. Seas 4 to 6 ft. 

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

.TONIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft. 
.SAT...E winds 10 kt. Seas 6 to 7 ft. 
.SAT NIGHT AND SUN...E winds 10 kt. Seas 6 to 7 ft. 
.SUN THROUGH WED...E winds 10 to 15 kt. Seas 5 to 7 ft.