000 FZNT31 KNHC 180809 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 409 AM EDT Thu Mar 18 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 cold front across the NE Caribbean will drift southward and weaken today. Large northerly swell will subside across Tropical N Atlantic waters and Caribbean Passages through Fri. Fresh to strong trade winds will prevail in the central Caribbean through Fri morning, with near gale-force winds expected near the coast of Colombia tonight. A cold front in the Gulf of Mexico will reach the Yucatan Channel Fri night, then meander across the NW Caribbean through Sun. NW Caribbean W of 85W .TODAY...SE winds 10 to 20 kt. Seas 6 to 8 ft. .TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...N winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .MON...NE winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 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 3 to 5 ft elsewhere. .FRI...E winds 10 to 20 kt S of 18N, and E less than 10 kt elsewhere. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 20 kt S of 18N, and N less than 10 kt elsewhere. Seas 4 to 6 ft. .SAT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...NE winds 10 to 15 kt. 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. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W .TODAY...E winds 15 to 25 kt. Seas 8 to 11 ft. .TONIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. .FRI...E winds 15 to 25 kt. Seas 7 to 10 ft. .FRI NIGHT...NE winds 15 to 25 kt. Seas 6 to 9 ft. .SAT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...NE winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 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 6 to 9 ft. .FRI...NE winds 10 to 20 kt. Seas 7 to 10 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .SAT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .SAT NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...NE winds 10 to 20 kt. Seas 6 to 9 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .MON...NE winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. Caribbean between 64W and 72W .TODAY...E 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 6 to 8 ft. .FRI NIGHT...NE winds 15 to 25 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 6 ft. .SUN...E winds 10 to 20 kt. Seas 5 to 6 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 6 ft. .MON...E winds 10 to 20 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 8 to 11 ft. .TONIGHT...NE winds 15 to 20 kt. Seas 7 to 10 ft. .FRI...E winds 15 to 20 kt. Seas 7 to 10 ft. .FRI NIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft. .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 15 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 15 to 20 kt. Seas 5 to 7 ft. .MON...E winds 15 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...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 .TODAY...NE winds 10 to 15 kt. Seas 7 to 10 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...E winds 10 to 15 kt. Seas 6 to 9 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...E winds 10 to 15 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 6 to 8 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON...E winds 10 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A cold front from 20N50W to the NE Caribbean will drift SE and weaken today. Large northerly swell will subside across the waters E of 72W today. A cold front will move east of northern Florida late tonight, extend from near 31N71W to the Straits of Florida Fri evening, then become stationary on Sat. An area of low pressure forming along the stationary front will intensify northerly winds east of northern Florida Sun and Sun night, with gale conditions possible. ATLC waters from 27N to 31N W of 77W .TODAY...S winds 15 to 25 kt. Seas 5 to 7 ft. .TONIGHT...SW winds 20 to 25 kt. Seas 6 to 9 ft. .FRI...W winds 15 to 25 kt. Seas 7 to 10 ft. .FRI NIGHT...N winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...NE winds 10 to 15 kt. Seas 8 to 11 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 8 to 13 ft. .SUN...E winds 10 to 15 kt, shifting to NW in the afternoon. Seas 9 to 14 ft. .SUN NIGHT...W winds 10 to 20 kt. Seas 9 to 14 ft. .MON...NW winds 15 to 25 kt. Seas 9 to 14 ft. .MON NIGHT...NW winds 15 to 25 kt. Seas 9 to 14 ft. ATLC waters from 27N to 31N between 65W and 77W .TODAY...SW winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...S winds 15 to 25 kt W of 70W, and SW 10 to 15 kt elsewhere. Seas 5 to 7 ft. .FRI...SW winds 15 to 25 kt W of 70W, and S 10 to 20 kt elsewhere. Seas 6 to 9 ft W of 70W, and 4 to 6 ft elsewhere. .FRI NIGHT...SW winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...S winds 10 to 15 kt. Seas 6 to 9 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 8 to 11 ft. .SUN...S winds 10 to 15 kt. Seas 8 to 12 ft. .SUN NIGHT...S winds 10 to 20 kt. Seas 8 to 11 ft. .MON...S winds 10 to 20 kt. Seas 7 to 10 ft. .MON NIGHT...S winds 10 to 20 kt. Seas 7 to 9 ft. Bahamas N of 22N .TODAY...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...S winds 10 to 15 kt. Seas 3 to 4 ft. .FRI NIGHT...S winds 10 to 15 kt. Seas 3 ft. .SAT...S winds 10 to 15 kt. Seas 3 ft. .SAT NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. .SUN...SW winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft. .MON...W winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...SE winds 10 to 15 kt. Seas 6 to 8 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...S winds 15 to 20 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 5 to 7 ft. .FRI NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...SE winds 10 to 15 kt. Seas 6 to 9 ft. .SUN NIGHT...SE winds 10 to 15 kt. Seas 7 to 9 ft. .MON...S winds 10 to 15 kt. Seas 7 to 8 ft. .MON NIGHT...S winds 10 to 15 kt. Seas 6 to 8 ft. ATLC waters S of 22N W of 65W .TODAY...E winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .FRI...E winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 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...SE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...SE winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...NE winds 15 to 20 kt. Seas 8 to 11 ft. .TONIGHT...NE winds 15 to 20 kt. Seas 8 to 10 ft. .FRI...E winds 15 to 20 kt. Seas 8 to 9 ft. .FRI NIGHT...E winds 15 to 20 kt. Seas 7 to 8 ft. .SAT...E winds 15 to 20 kt. Seas 7 to 8 ft. .SAT NIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 15 to 20 kt. Seas 6 to 7 ft. .SUN NIGHT...E winds 15 to 20 kt. Seas 6 to 7 ft. .MON...E winds 10 to 20 kt. Seas 6 to 7 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft.