000 FZNT02 KNHC 232212 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 2230 UTC THU AUG 23 2012 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. SECURITE ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND GULF OF MEXICO SYNOPSIS VALID 1800 UTC THU AUG 23. 24 HOUR FORECAST VALID 1800 UTC FRI AUG 24. 48 HOUR FORECAST VALID 1800 UTC SAT AUG 25. .WARNINGS. ...CARIBBEAN TROPICAL STORM WARNING... .TROPICAL STORM ISAAC NEAR 16.0N 67.1W 1003 MB AT 2100 UTC AUG 23 MOVING WNW OR 285 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM NE QUADRANT...60 NM SE QUADRANT...0 NM SW QUADRANT...AND 90 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 500 NM NE QUADRANT...60 NM SE QUADRANT...0 NM SW QUADRANT...AND 360 NM NW QUADRANT WITH SEAS TO 18 FT. .24 HOUR FORECAST TROPICAL STORM ISAAC NEAR 17.5N 71.5W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM NE QUADRANT...50 NM SE QUADRANT...30 NM SW QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 360 NM NE QUADRANT...90 NM SE QUADRANT...30 NM SW QUADRANT AND 240 NM NW QUADRANT WITH SEAS TO 19 FT. .48 HOUR FORECAST TROPICAL STORM ISAAC INLAND NEAR 20.3N 76.2W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 140 NM NE QUADRANT...60 NM SE QUADRANT...40 NM SW QUADRANT...AND 120 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 420 NM NE QUADRANT...120 NM SE QUADRANT...0 NM SW QUADRANT... AND 300 NM NW QUADRANT WITH SEAS TO 19 FT. .72 HOUR FORECAST TROPICAL STORM ISAAC OVER WATER NEAR 23.0N 80.0W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST HURRICANE ISAAC NEAR 25.5N 83.0W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. .120 HOUR FORECAST HURRICANE ISAAC NEAR 28.5N 85.5W. MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT. ...ATLC TROPICAL STORM WARNING... .TROPICAL STORM JOYCE NEAR 15.9N 42.5W 1006 MB AT 2100 UTC AUG 23 MOVING WNW OR 300 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 200 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 150 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE WITH SEAS TO 16 FT. .24 HOUR FORECAST TROPICAL STORM JOYCE NEAR 18.5N 47.9W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 180 NM NE QUADRANT...0 NM SE AND SW QUADRANTS... AND 120 NM NW QUADRANT WITH SEAS TO 18 FT. .48 HOUR FORECAST TROPICAL STORM JOYCE NEAR 22.1N 54.4W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 50 NM N SEMICIRCLE AND 0 NM S SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 120 NM NE QUADRANT...0 NM S SEMICIRCLE...AND 90 NM NW QUADRANT WITH SEAS TO 19 FT. .72 HOUR FORECAST TROPICAL STORM JOYCE NEAR 26.3N 60.4W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST TROPICAL STORM JOYCE NEAR 30.8N 63.0W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. .120 HOUR FORECAST TROPICAL STORM JOYCE NEAR 34.5N 60.4W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE AND INTENSITY. .SYNOPSIS AND FORECAST. .CARIBBEAN AND ATLC EXCEPT AS NOTED IN ISAAC WARNINGS...WITHIN 480 NM N SEMICIRCLE...540 NM SE QUADRANT...AND 90 NM SW QUADRANT OF CENTER WINDS 20 TO 33 KT. SEAS TO 12 FT. FROM 12N TO 20N BETWEEN 58W AND 60W SE WINDS 20 TO 25 KT. SEAS TO 10 FT. ELSEWHERE FROM 13N TO 27N BETWEEN 56W AND 70W WINDS 20 KT OR LESS. SEAS 8 FT IN SE SWELL. .24 HOUR FORECAST EXCEPT AS NOTED IN ISAAC WARNINGS...WITHIN 450 NM N SEMICIRCLE...500 NM SE QUADRANT...AND 150 NM SW QUADRANT OF CENTER WINDS 20 TO 33 KT. SEAS TO 12 FT. .48 HOUR FORECAST EXCEPT AS NOTED IN ISAAC WARNINGS...WITHIN 420 NM N AND NE SEMICIRCLES...AND 150 SW QUADRANT OF CENTER WINDS 20 TO 33 KT. SEAS TO 12 FT. ELSEWHERE FROM 12N TO 20N BETWEEN 65W AND 70W WINDS 20 TO 25 KT. SEAS TO 9 FT. ELSEWHERE S OF 29N BETWEEN 68W AND 76W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED SWELL. .ATLC EXCEPT AS NOTED IN JOYCE WARNINGS...WITHIN 300 NM N SEMICIRCLE...150 NM SE QUADRANT...AND 45 NM SW QUADRANT OF CENTER WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. ELSEWHERE FROM 10N TO 20N E OF 45W WINDS 20 KT OR LESS. SEAS TO 9 FT IN SE SWELL. .24 HOUR FORECAST EXCEPT AS NOTED IN JOYCE WARNINGS...WITHIN 300 NM N SEMICIRCLE...180 NM SE QUADRANT...AND 60 NM SW QUADRANT OF CENTER WINDS 20 TO 33 KT. SEAS TO 12 FT. .48 HOUR FORECAST EXCEPT AS NOTED IN JOYCE WARNINGS...WITHIN 300 NM N SEMICIRCLE...180 NM SE QUADRANT...AND 90 NM SW QUADRANT OF CENTER WINDS 20 TO 33 KT. SEAS TO 12 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.