000 FZNT31 KNHC 201515 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1015 AM EST Thu Dec 20 2018 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 ATLC from 07N to 19N between 55W and 64W .SYNOPSIS...Fresh to locally strong winds will continue across the south-central Caribbean through Mon, with strongest winds to near gale force on Sat night. Strong southerly flow is expected today ahead of a cold front in the Gulf of Mexico, which will enter the Yucatan Channel this evening. The front will reach from near the Windward Passage to Costa Rica by Sat morning, then slowly move south and slowly dissipate through Sun. Strong northerly winds are expected west of the front on Fri, increasing to near gale force Fri night. NW Caribbean W of 85W .TODAY...S winds 15 to 25 kt. Seas 5 to 7 ft. .TONIGHT...NW winds 15 to 25 kt. Seas 6 to 9 ft. .FRI...NW winds 15 to 25 kt. Seas 8 to 11 ft. .FRI NIGHT...NW winds 10 to 20 kt. Seas 7 to 10 ft. .SAT...N winds 10 to 15 kt. Seas 5 to 7 ft. .SAT NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...NE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Caribbean N of 15N between 72W and 85W .TODAY...SE winds 10 to 20 kt S of 18N, and S 15 to 25 kt elsewhere. Seas 5 to 7 ft. .TONIGHT...SE winds 10 to 20 kt S of 18N, and SW 15 to 25 kt elsewhere. Seas 5 to 7 ft. .FRI...NW winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...N winds 10 to 20 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 5 to 7 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. Caribbean from 11N to 15N W of 72W .TODAY...E winds 15 to 25 kt. Seas 6 to 9 ft. .TONIGHT...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. .FRI...NE winds 10 to 20 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. .SAT...NE winds 15 to 25 kt. Seas 7 to 10 ft. .SAT NIGHT...NE winds 15 to 25 kt. Seas 8 to 11 ft. .SUN...E winds 15 to 25 kt. Seas 8 to 11 ft. .SUN NIGHT...NE winds 15 to 25 kt. Seas 8 to 11 ft. .MON...E winds 15 to 25 kt. Seas 8 to 11 ft. .MON NIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft. SW Caribbean S of 11N .TODAY...N winds less than 10 kt. Seas 5 to 7 ft. .TONIGHT...N winds less than 10 kt. Seas 4 to 6 ft. .FRI...N winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. .FRI NIGHT...N winds 10 to 20 kt. Seas 6 to 9 ft. .SAT...NE winds 15 to 25 kt. Seas 7 to 10 ft. .SAT NIGHT...NE winds 15 to 25 kt. Seas 8 to 11 ft. .SUN...NE winds 15 to 25 kt. Seas 8 to 13 ft. .SUN NIGHT...NE winds 10 to 20 kt. Seas 8 to 11 ft. .MON...NE winds 15 to 25 kt. Seas 8 to 11 ft. .MON NIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. Caribbean between 64W and 72W .TODAY...E winds 10 to 20 kt. Seas 3 to 4 ft Gulf of Venezuela, and 5 to 7 ft elsewhere. .TONIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 5 to 7 ft. .FRI...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. .FRI NIGHT...E winds 15 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. 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 4 to 6 ft. .SUN...E winds 10 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON...E winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .TODAY...E winds 10 to 15 kt. Seas 5 to 7 ft. .TONIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SAT...E winds 10 to 20 kt. Seas 6 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 8 ft. .SUN NIGHT...E winds 15 kt. Seas 5 to 7 ft. .MON...E winds 10 to 15 kt. Seas 5 to 7 ft. .MON NIGHT...E winds 15 to 20 kt. Seas 5 to 7 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 5 to 7 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 9 ft. .SAT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 15 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 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 ATLC including the Bahamas .SYNOPSIS...Strong to near gale force southerly flow north of the Bahamas this morning will increase to gale force east and west of a strong cold front that will move off the the SE U.S. coast tonight. The cold front will reach from near 30N75W to west-central Cuba by early on Fri and from near 30N72W to the SE Bahamas and eastern Cuba on Fri evening, with gale force winds expected over the waters west of about 72W. The front will begin to weaken as it reaches from Bermuda to near 26N70W and to near the Windward Passage by early Sat afternoon and become stationary from near 27N65W to SE Bahamas and to eastern Cuba Sun. Winds and seas will diminish across the region Sat and Sun. ATLC waters from 27N to 31N W of 77W ...GALE WARNING... .TODAY...S winds 20 to 30 kt. Seas 6 to 9 ft, building to 8 to 13 ft in the afternoon. .TONIGHT...S winds 25 to 35 kt. Seas 10 to 16 ft. .FRI...SW winds 30 to 40 kt. Seas 14 to 20 ft. .FRI NIGHT...W winds 25 to 35 kt. Seas 13 to 18 ft. .SAT...W winds 15 to 25 kt. Seas 9 to 14 ft, subsiding to 7 to 10 ft in the afternoon. .SAT NIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...N winds 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 to 4 ft. .SUN NIGHT...Variable winds less than 10 kt, becoming NW 10 kt after midnight. Seas 3 ft. .MON...N winds 10 kt in the morning, becoming variable winds less than 10 kt. Seas 3 ft. .MON NIGHT...NE winds less than 10 kt. Seas 3 ft. ATLC waters from 27N to 31N between 65W and 77W ...GALE WARNING... .TODAY...SE winds 15 to 25 kt W of 70W, and SE 10 to 20 kt elsewhere. Seas 6 to 8 ft. .TONIGHT...S winds 20 to 30 kt W of 70W, and SE 15 to 25 kt elsewhere. W of 70W, seas 8 to 11 ft, building to 9 to 14 ft after midnight. Elsewhere, seas 6 to 9 ft. .FRI...S winds 25 to 35 kt W of 70W, and S 15 to 25 kt elsewhere. W of 70W, seas 11 to 16 ft, building to 14 to 19 ft in the afternoon. Elsewhere, seas 7 to 10 ft. .FRI NIGHT...SW winds 25 to 35 kt W of 70W, and S 20 to 30 kt elsewhere. W of 70W, seas 16 to 21 ft. Elsewhere, seas 8 to 11 ft, building to 9 to 14 ft after midnight. .SAT...W winds 15 to 25 kt. Seas 12 to 17 ft. .SAT NIGHT...NW winds 10 to 15 kt. Seas 9 to 14 ft, subsiding to 8 to 11 ft after midnight. .SUN...N winds 10 kt. Seas 6 to 9 ft. .SUN NIGHT...N winds less than 10 kt. Seas 5 to 7 ft. .MON...N winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. Bahamas N of 22N ...GALE WARNING W OF 76W... .TODAY...SE to S winds 15 to 25 kt, except 25 to 30 kt W of 78W. Seas 5 to 7 ft, except 6 to 8 ft W of 78W. .TONIGHT...S winds 20 to 30 kt, except 25 to 35 kt W of 78W. Seas 4 to 6 ft, except 8 to 11 ft W of 78W. .FRI...SW to W winds 20 to 30 kt, except 25 to 35 kt W of 76W. Seas 6 to 8 ft. .FRI NIGHT...W winds 20 to 30 kt. Seas 8 to 11 ft. .SAT...NW winds 10 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...N winds 10 to 15 kt. Seas 4 to 6 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. .MON...NE winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .TODAY...SE winds 15 to 20 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 6 to 8 ft. .TONIGHT...S winds 15 to 25 kt W of 70W, and SE 10 to 20 kt elsewhere. Seas 6 to 8 ft. .FRI...S winds 15 to 25 kt W of 70W, and SE 10 to 20 kt elsewhere. Seas 8 to 11 ft W of 70W, and 5 to 7 ft elsewhere. .FRI NIGHT...SW winds 15 to 25 kt W of 70W, and S 10 to 20 kt elsewhere. Seas 8 to 11 ft W of 70W, and 5 to 7 ft elsewhere. .SAT...SW winds 10 to 20 kt. Seas 7 to 10 ft. .SAT NIGHT...NW winds 10 to 15 kt, shifting to NE after midnight. Seas 6 to 9 ft. .SUN...NE winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 6 to 8 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 5 ft. ATLC waters S of 22N W of 65W .TODAY...SE winds 10 to 20 kt. Seas 5 to 7 ft. .TONIGHT...SE winds 10 to 20 kt. Seas 4 to 6 ft. .FRI...SE winds 10 to 20 kt. Seas 4 to 6 ft. .FRI NIGHT...SE 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 15 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. ATLC waters from 19N to 22N between 55W and 65W .TODAY...E winds 10 to 15 kt. Seas 6 to 8 ft. .TONIGHT...E winds 10 to 15 kt. Seas 7 to 8 ft. .FRI...E winds 10 to 20 kt. Seas 7 to 8 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft. .SAT...E winds 10 to 15 kt. Seas 6 to 7 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft. .MON...E winds 10 to 15 kt. Seas 6 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft.