000 FZNT31 KNHC 212120 OFFN20 MARINE WEATHER HF VOICE BROADCAST NWS NATIONAL HURRICANE CENTER MIAMI FL 520 PM EDT TUE AUG 21 2012 MARINE WEATHER HF VOICE BROADCAST FOR THE TROPICAL N ATLANTIC FROM 07N TO 22N BETWEEN 55W AND 64W...THE SW N ATLC 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...TROPICAL STORM ISAAC NEAR 15.4N 53.9W AT 5 PM EDT IS MOVING W AT 15 KT. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. ISAAC IS EXPECTED TO INTENSIFY AS IT MOVES ACROSS THE LEEWARD ISLANDS INTO THE EASTERN CARIBBEAN. ISAAC WILL BE NEAR 15.6N 56.4W EARLY WED...15.9N 59.8W WED AFTERNOON...16.3N 63.1W EARLY THU...16.6N 66.3W THU AFTERNOON...THEN BECOME A HURRICANE NEAR 17.0N 71.0W FRI AFTERNOON...19,5N 75.0W SAT AFTERNOON AND 21.5N 78.0W SUN AFTERNOON. A TROPICAL WAVE ALONG 65W WILL MOVE ACROSS THE CARIBBEAN THROUGH SAT. NW CARIBBEAN W OF 85W .TONIGHT...E TO SE WINDS 15 TO 25 KT. SEAS 6 TO 9 FT. .WED...E TO SE WINDS 15 TO 25 KT...DIMINISHING TO 10 TO 20 KT IN THE AFTERNOON. SEAS 6 TO 9 FT. .WED NIGHT THROUGH FRI NIGHT...NE TO E WINDS 15 TO 25 KT. SEAS 4 TO 6 FT. .SAT THROUGH SUN...N TO NW WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. CARIBBEAN N OF 15N BETWEEN 72W AND 85W .TONIGHT...E WINDS 15 TO 25 KT. SEAS 6 TO 9 FT. .WED...E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT. .WED NIGHT THROUGH THU NIGHT...N TO NE WINDS 15 TO 25 KT. SEAS 5 TO 7 FT. .FRI THROUGH SUN...HURRICANE CONDITIONS POSSIBLE. CARIBBEAN FROM 11N TO 15N W OF 70W .TONIGHT...E WINDS 20 TO 30 KT...BECOMING NE TO E 15 TO 25 KT AFTER MIDNIGHT. SEAS 7 TO 10 FT. .WED...E WINDS 10 TO 20 KT. SEAS 7 TO 10 FT. .WED NIGHT THROUGH THU NIGHT...N TO NE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT. .FRI THROUGH SUN...SE TO S WINDS 10 TO 15 KT. SEAS 4 TO 6 FT. SW CARIBBEAN S OF 11N .TONIGHT...E TO SE WINDS 15 TO 25 KT...BECOMING NE TO E 10 TO 20 KT AFTER MIDNIGHT. SEAS 6 TO 9 FT. .WED...E TO SE WINDS 10 TO 20 KT...BECOMING N LESS THAN 10 KT IN THE AFTERNOON. SEAS 6 TO 8 FT. .WED NIGHT...NE WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. .THU AND THU NIGHT...NW WINDS LESS THAN 10 KT. SEAS 4 TO 6 FT. .FRI THROUGH SUN...SE TO S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. CARIBBEAN BETWEEN 64W AND 72W ...TROPICAL STORM WARNING... .TONIGHT...E WINDS 15 TO 25 KT. SEAS 5 TO 7 FT. .WED...NE TO E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE WINDS 15 TO 25 KT...BECOMING N TO NE 30 TO 40 KT AFTER MIDNIGHT. SEAS 5 TO 7 FT. .THU...HURRICANE CONDITIONS POSSIBLE. N TO NW WINDS 50 TO 60 KT...BECOMING W TO NW 55 TO 65 KT IN THE AFTERNOON. SEAS 6 TO 9 FT. .THU NIGHT AND FRI...HURRICANE CONDITIONS POSSIBLE. .FRI NIGHT THROUGH SUN...HURRICANE CONDITIONS POSSIBLE. OFFSHORE LEEWARD ISLANDS AND ADJACENT ATLC WATERS FROM 15N TO 19N W OF 55W ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. NE TO E WINDS 10 TO 20 KT...BECOMING NE 30 TO 40 KT AFTER MIDNIGHT. SEAS 9 TO 14 FT. .WED...TROPICAL STORM CONDITIONS EXPECTED. NE TO E WINDS 30 TO 40 KT...BECOMING E 35 TO 45 KT IN THE AFTERNOON. SEAS 11 TO 16 FT. .WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E TO SE WINDS 40 TO 50 KT. SEAS 10 TO 15 FT. .THU THROUGH FRI NIGHT...TROPICAL STORM CONDITIONS EXPECTED. NE TO E WINDS 25 TO 35 KT. SEAS 8 TO 11 FT. .SAT THROUGH SUN...S WINDS 20 TO 30 KT. SEAS 6 TO 9 FT. OFFSHORE WINDWARD ISLANDS AND ADJACENT ATLC WATERS FROM 07N TO 15N W OF 55W .TONIGHT...NE WINDS 10 TO 15 KT...BECOMING SW TO W 15 TO 25 KT AFTER MIDNIGHT. SEAS 5 TO 7 FT. .WED...S TO SW WINDS 15 TO 25 KT. SEAS 5 TO 7 FT. .WED NIGHT THROUGH SUN...SE WINDS 15 TO 25 KT. SEAS 5 TO 7 FT. SYNOPSIS FOR THE SW N ATLC INCLUDING THE BAHAMAS .SYNOPSIS...TROPICAL STORM ISAAC NEAR 15.4N 53.9W AT 5 PM EDT IS MOVING W AT 15 KT. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. ISAAC IS EXPECTED TO INTENSIFY AS IT MOVES ACROSS THE LEEWARD ISLANDS INTO THE EASTERN CARIBBEAN. ISAAC WILL BE NEAR 15.6N 56.4W EARLY WED...15.9N 59.8W WED AFTERNOON...16.3N 63.1W EARLY THU...16.6N 66.3W THU AFTERNOON...THEN BECOME A HURRICANE NEAR 17.0N 71.0W FRI AFTERNOON...19,5N 75.0W SAT AFTERNOON AND 21.5N 78.0W SUN AFTERNOON. OTHERWISE...A RIDGE OF HIGH PRES ALONG 27N WILL SLOWLY LIFT N THROUGH SAT AS ISAAC APPROACHES FROM THE SE. ATLC WATERS FROM 27N TO 31N W OF 77W .TONIGHT...S TO SW WINDS 10 TO 20 KT. SEAS 2 TO 4 FT. .WED...S TO SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. .WED NIGHT AND THU...S TO SW WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. .THU NIGHT THROUGH SAT NIGHT...E WINDS 10 TO 20 KT. SEAS 4 TO 6 FT. .SUN...NE TO E WINDS 15 TO 20 KT. SEAS 7 TO 10 FT. ATLC WATERS FROM 27N TO 31N BETWEEN 65W AND 77W .TONIGHT...S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. .WED...SE TO S WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. .WED NIGHT THROUGH SUN...E TO SE WINDS 10 TO 20 KT. SEAS 5 TO 7 FT. BAHAMAS N OF 22N .TONIGHT...E TO SE WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. .WED...E TO SE WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. .WED NIGHT THROUGH THU NIGHT...NE TO E WINDS 15 TO 25 KT. SEAS 5 TO 7 FT. .FRI THROUGH SUN...TROPICAL STORM CONDITIONS POSSIBLE. ATLC WATERS FROM 22N TO 27N BETWEEN 65W AND THE BAHAMAS .TONIGHT...E WINDS 10 TO 15 KT...BECOMING 10 TO 20 KT AFTER MIDNIGHT. SEAS 5 TO 7 FT. .WED...E WINDS 10 TO 15 KT...BECOMING 10 TO 20 KT IN THE AFTERNOON. SEAS 5 TO 7 FT. .WED NIGHT THROUGH SUN...E TO SE WINDS 15 TO 25 KT. SEAS 8 TO 11 FT. ATLC WATERS S OF 22N W OF 65W .TONIGHT...E WINDS 10 TO 20 KT. SEAS 5 TO 7 FT. .WED...NE TO E WINDS 10 TO 20 KT. SEAS 6 TO 9 FT. .WED NIGHT...NE TO E WINDS 15 TO 25 KT. SEAS 8 FT...BUILDING TO 11 FT AFTER MIDNIGHT. .THU THROUGH FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E TO SE WINDS 30 TO 40 KT. SEAS 11 TO 16 FT. .SAT THROUGH SUN...TROPICAL STORM CONDITIONS POSSIBLE. ATLC WATERS FROM 19N TO 22N BETWEEN 55W AND 65W .TONIGHT...NE TO E WINDS 15 TO 20 KT...INCREASING TO 20 TO 25 KT AFTER MIDNIGHT. SEAS 9 TO 14 FT. .WED...NE TO E WINDS 20 TO 30 KT...BECOMING E 20 TO 25 KT IN THE AFTERNOON. SEAS 11 TO 16 FT. .WED NIGHT THROUGH FRI...E WINDS 20 TO 30 KT. SEAS 9 TO 14 FT. .FRI NIGHT THROUGH SUN...NE TO E WINDS 20 TO 30 KT. SEAS 6 TO 8 FT.