819 FZNT31 KNHC 171436 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 936 AM EST Fri Dec 17 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...A strong Bermuda High will prevail over W Atlantic through Mon. This will support fresh to strong tradewinds over the central and E Caribbean and tropical N Atlantic. Moderate to fresh trades are expected in the W Caribbean through Mon. On Tue, a developing low pressure off of the SE United States coast will act to weaken the tradewinds across the area. Large N swell will reach the tropical N Atlantic zones on Sat and continue through Mon. NW Caribbean W of 85W .TODAY...E winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT AND SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN THROUGH MON...SE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...N winds 10 to 15 kt. Seas 3 to 5 ft. Caribbean N of 15N between 72W and 85W .TODAY...E winds 15 to 25 kt S of 18N, and E 10 to 20 kt elsewhere. Seas 6 to 8 ft. .TONIGHT...E winds 15 to 25 kt S of 18N, and E 10 to 15 kt elsewhere. Seas 6 to 9 ft S of 18N, and 4 to 6 ft elsewhere. .SAT AND SAT NIGHT...E winds 15 to 25 kt S of 18N, and E 10 to 15 kt elsewhere. Seas 6 to 9 ft S of 18N, and 3 to 5 ft elsewhere. .SUN THROUGH TUE...SE winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W .TODAY...E winds 15 to 25 kt. Seas 7 to 10 ft. .TONIGHT...E winds 20 to 30 kt within 90 nm of coast of Colombia, and E 15 to 25 kt elsewhere. Seas 7 to 10 ft. .SAT AND SAT NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. .SUN THROUGH TUE...NE winds 10 to 20 kt. Seas 6 to 8 ft. SW Caribbean S of 11N .TODAY...NE winds 10 to 15 kt. Seas 6 to 9 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .SAT AND SAT NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .SUN THROUGH TUE...N winds 10 to 15 kt. Seas 5 to 7 ft. Caribbean between 64W and 72W .TODAY...E winds 15 to 25 kt. Seas 3 to 4 ft Gulf of Venezuela, and 6 to 9 ft elsewhere. .TONIGHT...E winds 15 to 25 kt. Seas 3 to 5 ft Gulf of Venezuela, and 7 to 10 ft elsewhere. .SAT AND SAT NIGHT...E winds 15 to 25 kt. Seas 3 to 5 ft Gulf of Venezuela, and 7 to 10 ft elsewhere. .SUN THROUGH TUE...E winds 10 to 20 kt. Seas 6 to 8 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...E winds 10 to 20 kt. Seas 8 to 11 ft. .TONIGHT...E winds 15 to 25 kt. Seas 8 to 12 ft. .SAT AND SAT NIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft. .SUN THROUGH TUE...E winds 10 to 20 kt. Seas 6 to 9 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TODAY...NE winds 10 to 20 kt. Seas 7 to 10 ft. .TONIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. .SAT AND SAT NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .SUN THROUGH TUE...E winds 10 to 20 kt. Seas 6 to 9 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...The Bermuda High north of the area is supporting moderate to fresh winds over the forecast waters. The high will build southward, bringing an increase in winds and seas during the weekend. On Mon, a strong cold front will move off of SE United States coast ahead of a developing low pressure on Tue. Large N swell impacting the Atlantic zone from 19N-22N between 55W-65W will diminish on Sun. ATLC waters from 27N to 31N W of 77W .TODAY...SE winds less than 10 kt. Seas 5 to 6 ft. .TONIGHT...SE winds 10 kt. Seas 5 to 6 ft. .SAT AND SAT NIGHT...S winds 10 to 15 kt. Seas 5 to 6 ft. .SUN...SW winds 10 to 15 kt. Seas 5 to 6 ft. .SUN THROUGH TUE...W winds 15 to 25 kt. Seas 6 to 9 ft. ATLC waters from 27N to 31N between 65W and 77W .TODAY...SE winds less than 10 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 7 to 10 ft. .TONIGHT...SE winds less than 10 kt. Seas 6 to 8 ft. .SAT AND SAT NIGHT...S winds 10 to 15 kt W of 70W, and S less than 10 kt elsewhere. Seas 5 to 7 ft. .SUN...S winds 10 to 15 kt. Seas 4 to 6 ft. .SUN THROUGH TUE...SW winds 10 to 20 kt. Seas 6 to 8 ft. Bahamas N of 22N .TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT AND SAT NIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .SUN THROUGH MON...SE winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...SW winds 10 to 20 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...E winds 10 to 20 kt. Seas 8 to 11 ft. .TONIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft. .SAT AND SAT NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .SUN THROUGH TUE...S winds 10 to 20 kt. Seas 5 to 7 ft. ATLC waters S of 22N W of 65W .TODAY...E winds 10 to 20 kt. Seas 7 to 10 ft. .TONIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft. .SAT AND SAT NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. .SUN THROUGH TUE...SE winds 10 to 20 kt. Seas 5 to 7 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...NE winds 20 to 25 kt. Seas 10 to 12 ft. .TONIGHT...NE winds 15 to 25 kt. Seas 10 to 12 ft. .SAT AND SAT NIGHT...E winds 15 to 20 kt. Seas 8 to 11 ft. .SUN THROUGH TUE...E winds 10 to 20 kt. Seas 6 to 9 ft.