000 FZNT31 KNHC 181509 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1109 AM EDT Sun Oct 18 2020 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 tropical wave moving across the W Caribbean will reach the Yucatan Peninsula by Tue morning enhancing winds and convection over the area. A broad area of low pressure is expected to form in a couple of days over the southwestern Caribbean Sea. Some gradual development of this system will be possible through the middle of the week as it moves slowly northward or north-northwestward over the western Caribbean Sea. NW Caribbean W of 85W .THIS AFTERNOON...NE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .MON...N winds 10 to 15 kt, diminishing to less than 10 kt in the afternoon. Seas 3 to 5 ft. .MON NIGHT...NE winds less than 10 kt. Seas 3 to 5 ft. .TUE...W winds less than 10 kt. Seas 4 to 6 ft. .TUE NIGHT...SE winds less than 10 kt. Seas 3 to 5 ft. .WED...SW winds less than 10 kt. Seas 3 to 4 ft. .WED NIGHT...SE winds less than 10 kt. Seas 3 ft in the evening, subsiding to 2 ft or less. .THU...SE winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...E winds less than 10 kt. Seas 2 ft or less. Caribbean N of 15N between 72W and 85W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .MON...E winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED...E winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. Caribbean from 11N to 15N W of 72W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 to 15 kt. Seas 3 to 5 ft. .MON NIGHT...Within 90 nm of coast of Colombia, SW winds 10 to 15 kt. Elsewhere, NE winds less than 10 kt, shifting to E after midnight. Seas 3 to 5 ft. .TUE...SE winds 10 to 15 kt, shifting to S in the afternoon. Seas 3 to 5 ft. .TUE NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .WED...S winds less than 10 kt. Seas 3 to 4 ft. .WED NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .THU...SE winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. SW Caribbean S of 11N .THIS AFTERNOON...NW winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...W winds less than 10 kt. Seas 3 to 4 ft. .MON...W winds less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...SW winds 10 to 20 kt. Seas 3 to 5 ft. .TUE...SW winds 10 to 15 kt. Seas 3 to 5 ft. .TUE NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. .WED...S winds 10 to 15 kt. Seas 3 ft. .WED NIGHT...S winds less than 10 kt. Seas 2 ft or less. .THU...S winds less than 10 kt in the morning, becoming variable winds less than 10 kt. Seas 2 ft or less. .THU NIGHT...Variable winds less than 10 kt. Seas 2 ft or less. Caribbean between 64W and 72W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .TONIGHT...E winds 10 to 15 kt. Seas 3 ft Gulf of Venezuela, and 4 to 6 ft elsewhere. .MON...Gulf of Venezuela, E winds 10 to 20 kt, becoming SE less than 10 kt in the afternoon,Seas 3 ft in the morning, subsiding to 2 ft or less. Elsewhere, E winds 10 to 15 kt,Seas 3 to 5 ft. .MON NIGHT...E winds less than 10 kt Gulf of Venezuela, and E 10 to 15 kt elsewhere. Seas 3 to 4 ft. .TUE...E winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .WED...E winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU 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 .THIS AFTERNOON...Variable winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...Variable winds less than 10 kt. Seas 3 to 4 ft. .MON...Variable winds less than 10 kt, becoming S less than 10 kt in the afternoon. Seas 3 to 4 ft. .MON NIGHT...SW winds less than 10 kt. Seas 3 to 5 ft. .TUE...SW winds less than 10 kt. Seas 3 to 5 ft. .TUE NIGHT...S winds less than 10 kt. Seas 5 to 7 ft. .WED...S winds less than 10 kt. Seas 5 to 7 ft. .WED NIGHT...SE winds less than 10 kt. Seas 5 to 7 ft. .THU...SE winds 10 to 15 kt. Seas 5 to 7 ft. .THU 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 .THIS AFTERNOON...SE winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .MON...SE winds less than 10 kt. Seas 3 to 4 ft. .MON NIGHT...SE winds less than 10 kt. Seas 3 to 4 ft. .TUE...SE winds less than 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .WED...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU...E winds 10 to 15 kt. Seas 4 to 6 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. Synopsis for the the SW N Atlantic including the Bahamas .SYNOPSIS...A stationary front extending from 31N70W to the Straits of Florida will dissipate on Mon. A non-tropical low pressure system is located about 550 miles east-southeast of Bermuda. Further development is expected, and a subtropical depression or storm is very likely to form during the next day or so while the low meanders well to the southeast of Bermuda. The pressure gradient between high pressure to the north and the low will increase winds and seas across the NE waters beginning tonight. ATLC waters from 27N to 31N W of 77W .THIS AFTERNOON...NE winds 15 to 25 kt. Seas 7 to 9 ft. .TONIGHT...NE winds 15 to 25 kt. Seas 7 to 10 ft. .MON...NE winds 15 to 20 kt. Seas 6 to 8 ft. .MON NIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft. .TUE...E winds 15 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...E winds 15 to 20 kt. Seas 7 to 9 ft. .WED...E winds 15 to 20 kt. Seas 8 to 9 ft. .WED NIGHT...E winds 15 to 20 kt. Seas 8 to 9 ft. .THU...E winds 15 to 20 kt. Seas 8 to 9 ft. .THU NIGHT...E winds 10 to 20 kt. Seas 8 to 11 ft. ATLC waters from 27N to 31N between 65W and 77W .THIS AFTERNOON...NE winds 10 to 20 kt. Seas 6 to 9 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 7 to 10 ft. .MON...NE winds 10 to 20 kt W of 70W, and NE 15 to 25 kt elsewhere. Seas 7 to 9 ft W of 70W, and 8 to 12 ft elsewhere. .MON NIGHT...E winds 15 to 20 kt W of 70W, and NE 15 to 25 kt elsewhere. Seas 8 to 11 ft W of 70W, and 10 to 13 ft elsewhere. .TUE...E winds 15 to 20 kt. Seas 8 to 12 ft. .TUE NIGHT...E winds 15 to 20 kt. Seas 9 to 12 ft. .WED...NE winds 15 to 20 kt. Seas 10 to 15 ft. .WED NIGHT...NE winds 15 to 25 kt. Seas 11 to 16 ft. .THU...NE winds 15 to 25 kt. Seas 11 to 16 ft. .THU NIGHT...N winds 15 to 25 kt. Seas 11 to 16 ft. Bahamas N of 22N .THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...E winds 10 to 20 kt. Seas 3 to 5 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. .TUE...E winds 10 to 20 kt. Seas 4 to 6 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .WED...E winds 15 to 20 kt. Seas 5 to 7 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU...E winds 10 to 20 kt. Seas 5 to 7 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .THIS AFTERNOON...NE winds 10 to 15 kt. Seas 4 to 6 ft. .TONIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .MON...NE winds 10 to 20 kt. Seas 6 to 9 ft. .MON NIGHT...NE winds 10 to 20 kt W of 70W, and NE 15 to 25 kt elsewhere. Seas 7 to 10 ft W of 70W, and 8 to 13 ft elsewhere. .TUE...E winds 10 to 20 kt. Seas 8 to 13 ft. .TUE NIGHT...E winds 10 to 20 kt. Seas 9 to 12 ft. .WED...NE winds 10 to 20 kt. Seas 9 to 12 ft. .WED NIGHT...NE winds 10 to 15 kt. Seas 9 to 14 ft. .THU...N winds 10 to 15 kt. Seas 9 to 14 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 8 to 13 ft. ATLC waters S of 22N W of 65W .THIS AFTERNOON...E winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. .MON...NE winds less than 10 kt. Seas 4 to 6 ft. .MON NIGHT...NE winds less than 10 kt. Seas 4 to 6 ft. .TUE...NE winds less than 10 kt. Seas 5 to 7 ft. .TUE NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .WED...E winds 10 to 15 kt. Seas 6 to 8 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. .THU...E winds 10 to 15 kt. Seas 6 to 9 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft. ATLC waters from 19N to 22N between 55W and 65W .THIS AFTERNOON...W winds less than 10 kt. Seas 3 to 4 ft. .TONIGHT...W winds 10 to 15 kt. Seas 4 to 6 ft. .MON...W winds 10 to 20 kt. Seas 5 to 7 ft. .MON NIGHT...W winds 10 to 20 kt. Seas 6 to 8 ft. .TUE...W winds 10 to 20 kt. Seas 7 to 10 ft. .TUE NIGHT...W winds 10 to 20 kt. Seas 8 to 11 ft. .WED...W winds 10 to 15 kt. Seas 7 to 10 ft. .WED NIGHT...SW winds less than 10 kt. Seas 7 to 10 ft. .THU...S winds less than 10 kt. Seas 6 to 9 ft. .THU NIGHT...SE winds less than 10 kt. Seas 6 to 8 ft.