000 FZNT31 KNHC 180200 OFFN20 Marine Weather HF Voice Broadcast NWS National Hurricane Center Miami, FL 1000 PM EDT Tue Oct 17 2017 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...A tropical wave across the SE Caribbean along 66W/67W this evening and accompanied by active weather will shift W and weaken through Thu. A second tropical wave moving across the tropical N Atlc waters this evening will move W through the Caribbean early Wed through late Fri. Strong high pressure ridge across the E and central Atlc will build W behind the second tropical wave and reinforce the existing flow, resulting in strong E trades spreading W across the Caribbean E of 73W by sunrise on Thu, and extending across the Central Caribbean beginning on Fri, then persist through the upcoming weekend. NW Caribbean W of 85W .OVERNIGHT...NE winds less than 10 kt. Seas 2 ft or less. .WED...NE winds less than 10 kt. Seas 2 ft or less. .WED NIGHT...Variable winds less than 10 kt, becoming NE less than 10 kt after midnight. Seas 2 ft or less. .THU...NE winds less than 10 kt. Seas 2 ft or less, building to 3 ft in the afternoon. .THU NIGHT...E winds less than 10 kt. Seas 2 ft or less, building to 3 to 4 ft after midnight. .FRI...NE winds less than 10 kt. 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. Seas 3 to 4 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 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. Caribbean N of 15N between 72W and 85W .OVERNIGHT...S of 18N, E winds 10 to 20 kt. Elsewhere, NE winds less than 10 kt, shifting to E after midnight. Seas 4 to 6 ft S of 18N, and 3 ft elsewhere. .WED...E winds 10 to 20 kt S of 18N, and E less than 10 kt elsewhere. Seas 4 to 6 ft S of 18N, and 3 ft elsewhere. .WED NIGHT...E winds 10 to 15 kt S of 18N, and NE less than 10 kt elsewhere. Seas 4 to 6 ft S of 18N, and 3 to 4 ft elsewhere. .THU...E winds 10 to 20 kt S of 18N, and E less than 10 kt elsewhere. Seas 5 to 7 ft S of 18N, and 3 to 4 ft elsewhere. .THU NIGHT...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 5 to 7 ft. .SAT...E winds 15 to 25 kt. Seas 6 to 9 ft. .SAT NIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft. .SUN...E winds 15 to 25 kt. Seas 6 to 9 ft. .SUN NIGHT...E winds 15 to 25 kt. Seas 6 to 9 ft. Caribbean from 11N to 15N W of 72W .OVERNIGHT...E of 75W NE to E winds 20 to 25 kt. W of 75W NE to E winds 15 to 20 kt. Seas 6 to 9 ft. .WED...NE to E winds 20 to 25 kt Within 90 nm of coast of Colombia, and E 15 to 20 kt elsewhere. Seas 6 to 9 ft. Scattered showers and isolated thunderstorms. .WED NIGHT...NE to E winds 20 to 25 kt Within 90 nm of coast of Colombia, and E 15 to 20 kt elsewhere. Seas 6 to 8 ft. Scattered showers and isolated thunderstorms. .THU...E winds 15 to 20 kt. Seas 6 to 8 ft. .THU NIGHT...E winds 15 to 20 kt. Seas 6 to 9 ft. .FRI...E winds 15 to 20 kt. Seas 6 to 9 ft. .FRI NIGHT...E winds 20 to 25 kt. Seas 7 to 10 ft. .SAT...E winds 15 to 25 kt. Seas 7 to 10 ft. .SAT NIGHT...E winds 20 to 25 kt. Seas 8 to 11 ft. .SUN...E winds 15 to 25 kt. Seas 8 to 11 ft. .SUN NIGHT...E winds 15 to 25 kt. Seas 8 to 11 ft. SW Caribbean S of 11N .OVERNIGHT...N winds less than 10 kt. Seas 3 to 5 ft. .WED...NE winds less than 10 kt, shifting to W in the afternoon. Seas 4 to 6 ft. .WED NIGHT...NW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 4 to 6 ft. .THU...Variable winds less than 10 kt, becoming SW less than 10 kt in the afternoon. Seas 3 to 5 ft. .THU NIGHT...Variable winds less than 10 kt. Seas 3 to 5 ft. .FRI...Variable winds less than 10 kt, becoming W less than 10 kt in the afternoon. Seas 3 to 5 ft. .FRI NIGHT...NW winds less than 10 kt. Seas 3 to 5 ft. .SAT...W winds less than 10 kt. Seas 4 to 6 ft. .SAT NIGHT...NW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 4 to 6 ft. .SUN...Variable winds less than 10 kt, becoming SW less than 10 kt in the afternoon. Seas 4 to 6 ft. .SUN NIGHT...NW winds less than 10 kt in the evening, becoming variable winds less than 10 kt. Seas 4 to 6 ft. Caribbean between 64W and 72W .OVERNIGHT...E winds 20 to 25 kt Gulf of Venezuela, and E 10 to 20 kt elsewhere. Seas 6 to 8 ft. .WED...E winds 15 to 20 kt. Seas 4 to 6 ft Gulf of Venezuela, and 6 to 8 ft elsewhere. .WED NIGHT...E winds 20 to 25 kt. Seas 4 to 6 ft Gulf of Venezuela, and 6 to 9 ft elsewhere. .THU...E winds 15 to 20 kt Gulf of Venezuela, and E 20 to 25 kt elsewhere. Seas 4 to 6 ft Gulf of Venezuela, and 7 to 10 ft elsewhere. .THU NIGHT...E winds 20 to 25 kt. Seas 7 to 10 ft. .FRI...E winds 20 to 25 kt. Seas 8 to 11 ft. .FRI NIGHT...E winds 20 to 25 kt. Seas 8 to 11 ft. .SAT...E winds 20 to 25 kt. Seas 7 to 10 ft. .SAT NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. .SUN...E winds 15 to 25 kt. Seas 7 to 10 ft. .SUN NIGHT...E winds 15 to 25 kt. Seas 7 to 10 ft. Offshore Leeward Islands and adjacent ATLC waters from 15N to 19N W of 55W .OVERNIGHT...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 8 ft. .FRI...E winds 10 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 5 to 7 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 20 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. Offshore Windward Islands and adjacent ATLC waters from 07N to 15N W of 55W .OVERNIGHT...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 20 kt. Seas 6 to 9 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 10 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 20 kt. Seas 6 to 8 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 6 to 8 ft. SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS .SYNOPSIS...Fresh to strong southerly flow and scattered showers and thunderstorms will continue E of a trough from 31N67W to 23N71W this evening. A cold front, accompanied by strong NE winds, extends from 31N71W to near Palm Beach Florida will move E to a position from 31N67W to SE Florida early Wed, then merge with the trough from 31N66W to the NW Bahamas to the Florida Straits late Wed. The merged systems remain from 30N65W to the central Bahamas through Fri night. The remnant weak trough drifts W across Florida through the weekend. ATLC waters from 27N to 31N W of 77W .OVERNIGHT...NE winds 15 to 25 kt. Seas 8 to 11 ft. .WED...NE winds 15 to 25 kt. Seas 8 to 11 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 7 to 10 ft. .THU...NE winds 10 to 20 kt. Seas 6 to 8 ft. .THU NIGHT...NE winds 10 to 20 kt. Seas 6 to 8 ft. .FRI...NE winds 10 to 20 kt. Seas 6 to 7 ft. .FRI NIGHT...E winds 10 to 20 kt. Seas 6 to 7 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...SE winds 10 to 20 kt. Seas 6 to 7 ft. .SUN NIGHT...SE winds 10 to 20 kt. Seas 5 to 7 ft. ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W .OVERNIGHT...E winds 10 to 15 kt. Seas 7 to 10 ft. .WED...E winds 10 to 15 kt W of 70W, and E less than 10 kt elsewhere. Seas 7 to 10 ft. .WED NIGHT...E winds 10 to 15 kt W of 70W, and SE less than 10 kt elsewhere. Seas 6 to 9 ft. .THU...W of 70W, NE winds 10 to 15 kt. Elsewhere, S winds less than 10 kt, shifting to SW in the afternoon. Seas 6 to 8 ft. .THU NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...NE winds 10 to 15 kt. Seas 5 to 6 ft. .FRI NIGHT...NE winds 10 to 20 kt. Seas 5 to 7 ft. .SAT...E winds 10 to 20 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. Seas 5 to 7 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Bahamas N of 22N .OVERNIGHT...E winds less than 10 kt. Seas 3 to 4 ft. .WED...E winds less than 10 kt. Seas 3 to 5 ft. .WED NIGHT...E winds less than 10 kt, increasing to 10 to 15 kt after midnight. Seas 3 to 5 ft. .THU...E winds less than 10 kt. Seas 3 to 4 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...E 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 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. .SUN...E winds 10 to 20 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 20 kt. Seas 3 to 5 ft. ATLC waters from 22N to 27N between 65W and the Bahamas .OVERNIGHT...SE winds less than 10 kt. Seas 5 to 7 ft. .WED...E winds less than 10 kt W of 70W, and SE 10 to 15 kt elsewhere. Seas 5 to 7 ft. .WED NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .THU...SE winds 10 to 15 kt. Seas 5 to 7 ft. .THU NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI...SE winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 5 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. ATLC waters S of 22N W of 65W .OVERNIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. .WED...SE winds 10 to 15 kt. Seas 4 to 6 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 4 to 6 ft. .THU...SE winds 10 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...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...E winds 10 to 20 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 20 kt. Seas 4 to 6 ft. .SAT NIGHT...E winds 10 to 20 kt. Seas 4 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. ATLC waters from 19N to 22N between 55W and 65W .OVERNIGHT...SE winds 15 to 20 kt. Seas 7 to 8 ft. .WED...SE winds 10 to 20 kt. Seas 7 to 8 ft. .WED NIGHT...E winds 10 to 20 kt. Seas 6 to 7 ft. .THU...E winds 10 to 20 kt. Seas 6 to 7 ft. .THU NIGHT...E winds 10 to 15 kt. Seas 6 to 7 ft. .FRI...E winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .SAT...E winds 10 to 15 kt. Seas 5 to 6 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft.