000 FZNT31 KNHC 200824 OFFN20 MARINE WEATHER HF VOICE BROADCAST NWS NATIONAL HURRICANE CENTER MIAMI FL 424 AM EDT MON MAR 20 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 FRONTAL TROUGH EXTENDING SW FROM E CUBA TO EASTERN HONDURAS WILL GRADUALLY DISSIPATE THROUGH TONIGHT. STRONG NOCTURNAL TRADES FORECAST ALONG THE NW COAST OF COLOMBIA THIS WEEK. THE PRESSURE GRADIENT WILL STRENGTHEN LATE IN THE WEEK WITH STRONG TO NEAR GALE FORCE NORTHEASTERLY FLOW EXPECTED ACROSS THE NW AND N CENTRAL CARIBBEAN. NW CARIBBEAN W OF 85W .TODAY...NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .TONIGHT...NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .TUE...NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. .TUE NIGHT...NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. .WED...E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. .WED NIGHT...NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. .THU...E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT. .THU NIGHT...E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. .FRI...E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .FRI NIGHT...E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. CARIBBEAN N OF 15N BETWEEN 72W AND 85W .TODAY...NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .TONIGHT...NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT. .TUE...NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT. .TUE NIGHT...NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. .WED...NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. .WED NIGHT...NE WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. .THU...NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT. .THU NIGHT...NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .FRI...NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT. .FRI NIGHT...E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT. CARIBBEAN FROM 11N TO 15N W OF 72W .TODAY...NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .TONIGHT...NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .TUE...NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .TUE NIGHT...NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .WED...NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .WED NIGHT...NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .THU...NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .THU NIGHT...NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .FRI...NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT. .FRI NIGHT...NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT. SW CARIBBEAN S OF 11N .TODAY...N WINDS 10 TO 15 KT...DIMINISHING TO LESS THAN 10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. .TONIGHT...N WINDS 10 TO 20 KT. SEAS 4 TO 5 FT. .TUE...NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .TUE NIGHT...N WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .WED...NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .WED NIGHT...NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .THU...NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .THU NIGHT...NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .FRI...NE WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .FRI NIGHT...NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. CARIBBEAN BETWEEN 64W AND 72W .TODAY...E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. .TONIGHT...E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. .TUE...E WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. .TUE NIGHT...NE WINDS 15 TO 20 KT GULF OF VENEZUELA...AND E 10 TO 15 KT ELSEWHERE. SEAS 3 TO 4 FT. .WED...E WINDS 10 TO 20 KT. SEAS 3 TO 5 FT. .WED NIGHT...E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .THU...E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .THU NIGHT...E WINDS 10 TO 20 KT. SEAS 4 TO 6 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. OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO 19N W OF 55W .TODAY...SE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. .TONIGHT...E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .TUE...E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .TUE NIGHT...E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .WED...E WINDS 10 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 6 TO 8 FT. .THU NIGHT...E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. .FRI...E WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. .FRI NIGHT...NE WINDS 10 TO 15 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 15 KT. SEAS 5 TO 7 FT. .TONIGHT...E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .TUE...E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .TUE NIGHT...E WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .WED...E WINDS 10 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 6 TO 8 FT. .THU NIGHT...E WINDS 10 TO 15 KT. SEAS 5 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 7 FT. SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS .SYNOPSIS...A COLD FRONT EXTENDING SW FROM BERMUDA TO THE STRAITS OF FLORIDA WILL OVERTAKE A FRONTAL TROUGH DRIFTING NW ACROSS THE BAHAMAS TODAY. THE MERGED FRONT WILL STALL ACROSS THE TROPICAL WATERS FROM 22N65W TO THE WINDWARD PASSAGE ON TUE...THEN DRIFT N ON WED. ANOTHER COLD FRONT WILL ENTER THE FAR NW WATERS ON TUE NIGHT...REACH FROM BERMUDA TO CENTRAL FLORIDA ON WED NIGHT... THEN WASH OUT ALONG 24N ON THU AS STRONG TO NEAR GALE FORCE NORTHEASTERLY FLOW DEVELOPS ACROSS MOST OF THE AREA. ATLC WATERS FROM 27N TO 31N W OF 77W .TODAY...N WINDS 10 TO 20 KT. SEAS 6 TO 9 FT. .TONIGHT...N WINDS LESS THAN 10 KT. SEAS 6 TO 8 FT. .TUE...NW WINDS LESS THAN 10 KT...SHIFTING TO W IN THE AFTERNOON. SEAS 5 TO 7 FT. .TUE NIGHT...SW WINDS 10 TO 20 KT. SEAS 5 TO 6 FT. .WED...W WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .WED NIGHT...W WINDS 10 TO 20 KT...SHIFTING TO N 15 TO 25 KT AFTER MIDNIGHT. SEAS 5 TO 7 FT. .THU...NE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT. .THU NIGHT...E WINDS 15 TO 25 KT. SEAS 8 TO 11 FT. .FRI...E WINDS 20 TO 25 KT. SEAS 7 TO 10 FT. .FRI NIGHT...E WINDS 15 TO 20 KT. SEAS 7 TO 9 FT. ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W .TODAY...NW WINDS 20 TO 30 KT. SEAS 9 TO 14 FT W OF 70W...AND 8 TO 13 FT ELSEWHERE. .TONIGHT...N WINDS 10 TO 15 KT W OF 70W...AND NW 15 TO 25 KT ELSEWHERE. SEAS 8 TO 12 FT W OF 70W...AND 9 TO 14 FT ELSEWHERE. .TUE...NW WINDS 10 TO 15 KT...DIMINISHING TO LESS THAN 10 KT IN THE AFTERNOON. SEAS 8 TO 11 FT. .TUE NIGHT...W OF 70W...W WINDS LESS THAN 10 KT...SHIFTING TO SW AFTER MIDNIGHT. ELSEWHERE...SW WINDS LESS THAN 10 KT. SEAS 6 TO 9 FT. .WED...SW WINDS 10 TO 20 KT. SEAS 5 TO 7 FT. .WED NIGHT...W WINDS 10 TO 20 KT. SEAS 6 TO 8 FT. .THU...N WINDS 15 TO 25 KT. SEAS 6 TO 9 FT. .THU NIGHT...NE WINDS 15 TO 25 KT. SEAS 8 TO 11 FT. .FRI...NE WINDS 20 TO 25 KT. SEAS 8 TO 12 FT. .FRI NIGHT...E WINDS 15 TO 25 KT. SEAS 8 TO 11 FT. BAHAMAS N OF 22N .TODAY...NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT. .TONIGHT...NE WINDS 10 TO 20 KT. SEAS 3 TO 5 FT. .TUE...NE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. .TUE NIGHT...E WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. .WED...NE WINDS 10 TO 15 KT. 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 4 FT. .THU NIGHT...NE WINDS 15 TO 25 KT. SEAS 4 TO 6 FT. .FRI...E WINDS 15 TO 25 KT. SEAS 6 TO 9 FT. .FRI NIGHT...E WINDS 15 TO 25 KT. SEAS 6 TO 9 FT. ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS .TODAY...N WINDS 10 TO 20 KT. SEAS 6 TO 9 FT. .TONIGHT...N WINDS 10 TO 15 KT. SEAS 6 TO 9 FT. .TUE...NE WINDS 10 TO 15 KT. SEAS 7 TO 9 FT. .TUE NIGHT...NE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT. .WED...E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT. .WED NIGHT...NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. .THU...NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .THU NIGHT...NE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT. .FRI...NE WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. .FRI NIGHT...NE WINDS 20 TO 30 KT. SEAS 11 TO 14 FT. ATLC WATERS S OF 22N W OF 65W .TODAY...N WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT. .TONIGHT...NE WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. .TUE...NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. .TUE NIGHT...E WINDS 10 TO 20 KT. SEAS 6 TO 8 FT. .WED...E WINDS 10 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 15 KT. SEAS 4 TO 6 FT. .THU NIGHT...NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT. .FRI...NE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT. .FRI NIGHT...NE WINDS 20 TO 30 KT. SEAS 8 TO 11 FT...BUILDING TO 9 TO 14 FT AFTER MIDNIGHT. ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W .TODAY...SE WINDS 10 TO 15 KT. SEAS 6 TO 7 FT. .TONIGHT...SE WINDS 10 TO 15 KT...DIMINISHING TO LESS THAN 10 KT AFTER MIDNIGHT. SEAS 5 TO 6 FT. .TUE...SE WINDS LESS THAN 10 KT. SEAS 5 TO 6 FT. .TUE NIGHT...E WINDS LESS THAN 10 KT...INCREASING TO 10 TO 15 KT AFTER MIDNIGHT. SEAS 5 TO 7 FT. .WED...SE WINDS 10 TO 15 KT. SEAS 6 TO 7 FT. .WED NIGHT...SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT. .THU...SE WINDS 10 TO 15 KT. SEAS 6 TO 8 FT. .THU NIGHT...E WINDS 10 TO 15 KT...DIMINISHING TO LESS THAN 10 KT AFTER MIDNIGHT. SEAS 6 TO 7 FT. .FRI...E WINDS 10 TO 15 KT. SEAS 6 TO 8 FT. .FRI NIGHT...NE WINDS 15 TO 25 KT. SEAS 7 TO 10 FT.