000 FZNT31 KNHC 211533 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1033 AM EST Tue Dec 21 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 extends from the Yucatan Channel to the Belize/Yucatan border. The front will gradually stall from the Windward Passage to offshore Nicaragua for the latter part the week. Fresh N winds can be expected behind the front. Elsewhere, moderate to fresh trades will prevail over the central and eastern basin through tonight. A weakening pressure gradient will lead to less wind Wed and Thu. For tropical Atlantic waters E of the Lesser Antilles, fresh to strong trades and large N to NE swell will prevail into tonight. NW Caribbean W of 85W .TODAY...SW winds less than 10 kt, shifting to W in the afternoon. Seas 3 to 5 ft. .TONIGHT...NW winds 10 to 20 kt. Seas 4 to 6 ft. .WED...NW winds 10 to 20 kt. Seas 4 to 6 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. .THU...N winds less than 10 kt. Seas 3 to 5 ft. .THU NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .FRI...E winds less than 10 kt. Seas 3 to 4 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 ft. .SAT...E winds less than 10 kt. Seas 3 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 ft. Caribbean N of 15N between 72W and 85W .TODAY...E winds 10 to 15 kt S of 18N, and SW less than 10 kt elsewhere. Seas 4 to 6 ft S of 18N, and 2 ft or less elsewhere. .TONIGHT...S of 18N, E winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Elsewhere, W winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .WED...S of 18N, E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Elsewhere, NW winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .THU...NE winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...NE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. Caribbean from 11N to 15N W of 72W .TODAY...E winds 10 to 20 kt. Seas 4 to 6 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .WED...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .THU...NE winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 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. SW Caribbean S of 11N .TODAY...N winds less than 10 kt. Seas 4 to 6 ft. .TONIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .WED...NW winds less than 10 kt. Seas 3 to 4 ft. .WED NIGHT...N winds less than 10 kt. Seas 3 ft. .THU...N winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .FRI...N winds less than 10 kt. Seas 3 to 5 ft. .FRI NIGHT...N winds less than 10 kt. Seas 3 to 4 ft. .SAT...N winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. Caribbean between 64W and 72W .TODAY...E winds 10 to 15 kt. Seas 3 to 4 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .TONIGHT...E winds 10 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .WED...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .WED NIGHT...E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .THU...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 5 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...E winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED...E winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .THU...E winds 10 to 20 kt. Seas 6 to 8 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .FRI...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .TODAY...E winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED...E winds 10 to 20 kt. Seas 6 to 9 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...E winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A 1001 mb low pressure in the far eastern Gulf of Mexico will cross Florida today and move into the Atlantic, east of northern Florida, by late this afternoon. The low will then move NE to the north of the area tonight, with gale force winds developing on both sides of it for areas N of 28N and W of 71W. Frequent gusts to gale force are first expected east of Florida this afternoon. A trailing cold front will cross the region Wed through Thu, bringing scattered showers and thunderstorms with it. Building high pressure behind the low should lead toward tranquil conditions Thu night through Fri. ATLC waters from 27N to 31N W of 77W ...GALE WARNING... .TODAY...S winds 20 to 30 kt with frequent gusts to gale force. Seas 6 to 9 ft. .TONIGHT...W winds 20 to 30 kt with frequent gusts to gale force. Seas 8 to 12 ft. .WED...NW winds 20 to 30 kt. Seas 8 to 11 ft. .WED NIGHT...N winds 10 to 20 kt. Seas 6 to 9 ft. .THU...N winds 10 kt. Seas 4 to 6 ft. .THU NIGHT...NE winds less than 10 kt. Seas 4 to 5 ft. .FRI...SE winds 10 kt. Seas 3 to 5 ft. .FRI NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...W winds 15 to 25 kt. Seas 4 to 6 ft. .SAT NIGHT...W winds 15 to 25 kt. Seas 6 to 8 ft. ATLC waters from 27N to 31N between 65W and 77W ...GALE WARNING... .TODAY...S winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...SW winds 25 to 35 kt W of 70W, and S 15 to 25 kt elsewhere. Seas 8 to 11 ft W of 70W, and 6 to 8 ft elsewhere. .WED...W winds 25 to 35 kt W of 70W, and SW 15 to 25 kt elsewhere. Seas 8 to 13 ft W of 70W, and 8 to 11 ft elsewhere. .WED NIGHT...NW winds 10 to 20 kt. Seas 8 to 11 ft. .THU...N winds 10 to 15 kt. Seas 6 to 9 ft. .THU NIGHT...N winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...NE winds 10 to 15 kt. Seas 6 to 9 ft. .FRI NIGHT...SE winds less than 10 kt. Seas 5 to 7 ft. .SAT...SW winds 10 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...W winds 15 to 25 kt. Seas 7 to 10 ft. Bahamas N of 22N .TODAY...S winds 10 to 20 kt. Seas 3 to 5 ft. .TONIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. .WED...W winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. .THU...N winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .FRI...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 4 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .SAT...E winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...N winds less than 10 kt. Seas 3 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...SE winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...S winds 15 to 20 kt W of 70W, and S 10 to 15 kt elsewhere. Seas 5 to 7 ft. .WED...SW winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft. .THU...W winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...NE winds 10 to 15 kt. Seas 6 to 8 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft. .SAT...E winds less than 10 kt. Seas 5 to 7 ft. .SAT NIGHT...Variable winds less than 10 kt, becoming NW less than 10 kt after midnight. Seas 4 to 6 ft. ATLC waters S of 22N W of 65W .TODAY...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .WED...S winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...S winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 3 to 5 ft. .THU...SW winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. .FRI...N winds 10 to 15 kt. Seas 4 to 6 ft. .FRI NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 4 to 6 ft. .SAT...E winds less than 10 kt. Seas 4 to 6 ft. .SAT NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...E winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft. .WED...SE winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .THU...SE winds 10 to 15 kt. Seas 7 to 8 ft. .THU NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft. .FRI...SE winds 10 kt in the morning, becoming variable winds less than 10 kt. Seas 6 to 7 ft. .FRI NIGHT...E winds less than 10 kt. Seas 6 ft. .SAT...E winds less than 10 kt. Seas 5 to 6 ft. .SAT NIGHT...E winds less than 10 kt. Seas 6 ft.