000 FZNT31 KNHC 212058 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 358 PM 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 southwestward from the western tip of Cuba to Belize. The front will gradually stall from the Windward Passage to offshore Nicaragua for the latter part the week. Fresh N winds are expected behind the front, diminishing to mainly moderate on Wed. Scattered showers and isolated thunderstorms accompany 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 seas of 8 to 9 ft will prevail through Wed. NW Caribbean W of 85W .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 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .THU NIGHT...NE winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .FRI...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .FRI NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .SAT...E winds less than 10 kt. Seas 3 to 4 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 ft. .SUN...E winds less than 10 kt. Seas 3 ft. .SUN NIGHT...E winds less than 10 kt. Seas 3 ft. Caribbean N of 15N between 72W and 85W .TONIGHT...S of 18N, NE winds less than 10 kt. 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 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 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 4 ft. Caribbean from 11N to 15N W of 72W .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 less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 4 ft. .THU...NE winds less than 10 kt within 90 nm of coast of Colombia, and NE 10 to 15 kt elsewhere. Seas 3 to 5 ft. .THU NIGHT...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 3 to 5 ft. .SAT...NE winds 10 to 15 kt. Seas 4 to 5 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. SW Caribbean S of 11N .TONIGHT...Variable winds less than 10 kt, becoming NW less than 10 kt after midnight. 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 10 to 15 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 4 ft. .SAT NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...N winds less than 10 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. Caribbean between 64W and 72W .TONIGHT...E winds 10 to 20 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Gulf of Venezuela, seas 3 ft in the evening, subsiding to 2 ft or less. Elsewhere, seas 4 to 6 ft. .WED...Gulf of Venezuela, E winds 10 to 15 kt, shifting to NE in the afternoon. Elsewhere, 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...Gulf of Venezuela, E winds less than 10 kt, shifting to NE in the afternoon. Elsewhere, E winds 10 to 15 kt. Seas 2 ft or less Gulf of Venezuela, and 4 to 6 ft elsewhere. .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 3 to 5 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 3 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. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .WED...E winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .THU...E winds 10 to 15 kt. Seas 6 to 8 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 5 to 7 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 less than 10 kt. Seas 4 to 6 ft. .SAT...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .SUN NIGHT...E winds less than 10 kt. Seas 4 to 6 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .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...NE 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. .SUN...E winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A 1001 mb low pressure centered inland over east- central Florida near 28N81W will move into the western Atlantic late this afternoon. The low will then move NE and north of the area tonight. Gale force winds are forecast to develop on the south side of the low, near the coast of Florida, late this afternoon. Gales will persist south of the low through early Wed morning, mainly north of 28N and west of 71W, before the gales move north of 31N. A trailing cold front will cross the region tonight through Wed night, bringing scattered showers and thunderstorms with it. Building high pressure behind the low should lead toward tranquil conditions Thu night through Fri night. Looking ahead, a strong pressure gradient is likely to develop north of 29N this weekend in between low pressure systems tracking along 40N and the subtropical high, which will be situated along 25N, leading to strong W winds and building seas north of 29N. ATLC waters from 27N to 31N W of 77W ...GALE WARNING... .TONIGHT...W winds 25 to 35 kt. Seas 8 to 12 ft. .WED...NW winds 15 to 25 kt. Seas 8 to 12 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 6 to 9 ft. .THU...N winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...NE winds 10 to 15 kt, diminishing to less than 10 kt after midnight. Seas 4 to 6 ft. .FRI...Variable winds less than 10 kt. Seas 3 to 5 ft. .FRI NIGHT...S winds less than 10 kt, shifting to SW after midnight. Seas 3 to 4 ft. .SAT...SW winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...W winds 15 to 25 kt. Seas 5 to 7 ft. .SUN...W winds 15 to 25 kt. Seas 6 to 8 ft. .SUN NIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters from 27N to 31N between 65W and 77W ...GALE WARNING... .TONIGHT...SW winds 25 to 35 kt W of 70W, and S 15 to 25 kt elsewhere. W of 70W, seas 7 to 10 ft, building to 8 to 13 ft after midnight. Elsewhere, seas 7 to 8 ft. .WED...SW to W winds 25 to 35 kt W of 70W, decreasing to 20 to 25 kt in the afternoon. E of 70W, SW winds 15 to 25 kt. Seas 8 to 13 ft W of 70W, and 8 to 11 ft elsewhere. .WED NIGHT...W of 70W, NW winds 10 to 20 kt. Elsewhere, SW winds 15 to 25 kt, shifting to W 10 to 15 kt after midnight. Seas 8 to 11 ft. .THU...W of 70W, N winds 10 to 20 kt. Elsewhere, NW winds less than 10 kt, shifting to N in the afternoon. Seas 6 to 9 ft. .THU NIGHT...N winds 10 to 20 kt. Seas 6 to 9 ft. .FRI...N winds 10 to 20 kt. Seas 6 to 9 ft. .FRI NIGHT...E winds less than 10 kt. Seas 5 to 7 ft. .SAT...SW winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft. .SAT NIGHT...W winds 15 to 25 kt. Seas 6 to 9 ft. .SUN...W winds 15 to 25 kt. Seas 8 to 11 ft. .SUN NIGHT...NW winds 15 to 25 kt. Seas 8 to 13 ft. Bahamas N of 22N .TONIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. .WED...W winds 10 to 20 kt. Seas 3 to 5 ft. .WED NIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. .THU...N winds 10 to 15 kt. Seas 3 to 4 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...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...E winds less than 10 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds less than 10 kt. Seas 3 to 4 ft in the evening, subsiding to 2 ft or less. .SUN...N winds less than 10 kt. Seas 2 ft or less. .SUN NIGHT...N winds less than 10 kt. Seas 3 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TONIGHT...S winds 10 to 20 kt. Seas 5 to 7 ft. .WED...SW winds 10 to 20 kt. Seas 6 to 8 ft. .WED NIGHT...W of 70W, W winds 10 to 15 kt, shifting to NW after midnight. Elsewhere, SW winds 10 to 15 kt. Seas 6 to 8 ft. .THU...NW winds 10 to 15 kt W of 70W, and SW less than 10 kt elsewhere. Seas 5 to 7 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...N winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 6 to 9 ft. .SAT...NE winds 10 to 15 kt, shifting to E in the afternoon. Seas 6 to 8 ft. .SAT NIGHT...N winds less than 10 kt. Seas 4 to 6 ft. .SUN...NW winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft. .SUN NIGHT...NW winds 10 to 15 kt. Seas 5 to 7 ft. ATLC waters S of 22N W of 65W .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 less than 10 kt. 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. 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 less than 10 kt. Seas 4 to 6 ft. .SUN...NE winds less than 10 kt. Seas 3 to 5 ft. .SUN NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. ATLC waters from 19N to 22N between 55W and 65W .TONIGHT...E winds 10 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 20 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 5 to 7 ft. .FRI NIGHT...Variable winds less than 10 kt, becoming E less than 10 kt after midnight. Seas 5 to 6 ft. .SAT...E winds less than 10 kt. Seas 5 to 6 ft. .SAT NIGHT...E winds 10 kt. Seas 5 to 6 ft. .SUN...SE winds less than 10 kt. Seas 5 to 6 ft. .SUN NIGHT...Variable winds less than 10 kt. Seas 5 to 6 ft.