000 FZNT02 KNHC 220920 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1030 UTC WED AUG 22 2012 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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. PAN PAN ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND GULF OF MEXICO SYNOPSIS VALID 0600 UTC WED AUG 22. 24 HOUR FORECAST VALID 0600 UTC THU AUG 23. 48 HOUR FORECAST VALID 0600 UTC FRI AUG 24. .WARNINGS. ...CARIBBEAN HURRICANE WARNING... ...ATLC TROPICAL STORM WARNING... .TROPICAL STORM ISAAC NEAR 15.5N 57.3W 1003 MB AT 0900 UTC AUG 22 MOVING W OR 270 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM NE QUADRANT AND 30 NM SE QUADRANT. SEAS 12 FT OR GREATER WITHIN 30 NM NW AND SE QUADRANTS...120 NM NE QUADRANT WITH SEAS TO 15 FT. .24 HOUR FORECAST TROPICAL STORM ISAAC NEAR 16.3N 62.8W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM N SEMICIRCLE...40 NM SE QUADRANT AND 30 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 240 NM NE QUADRANT...60 NM SE QUADRANT...90 NM SW QUADRANT...AND 120 NM NW QUADRANT WITH SEAS TO 19 FT. .48 HOUR FORECAST HURRICANE ISAAC NEAR 17.3N 68.4W. MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM N SEMICIRCLE...60 NM SE QUADRANT AND 40 NM SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM N SEMICIRCLE...120 NM SE QUADRANT...AND 150 NM SW QUADRANT WITH SEAS TO 24 FT. .72 HOUR FORECAST HURRICANE ISAAC OVER WATER NEAR 18.8N 73.2W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST HURRICANE ISAAC OVER WATER NEAR 21.8N 77.1W. MAXIMUM SUSTAINED WINDS 65 KT GUSTS 80 KT. .120 HOUR FORECAST HURRICANE ISAAC NEAR 24.8N 80.0W. MAXIMUM SUSTAINED WINDS 80 KT GUSTS 100 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 240 NM N SEMICIRCLE AND 180 NM SE QUADRANT OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. ELSEWHERE FROM 15N TO 24N BETWEEN 49W AND 63W NE TO E WINDS 20 TO 25 KT...EXCEPT E TO SE WINDS E OF 57W. SEAS 8 TO 10 FT. .24 HOUR FORECAST EXCEPT AS NOTED IN ISAAC WARNINGS...WITHIN 300 NM NE SEMICIRCLE AND 240 NM SE QUADRANT OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. ELSEWHERE FROM 14N TO 24N BETWEEN 54W AND 68W NE TO E WINDS 20 TO 25 KT...EXCEPT E TO SE WINDS E OF 63W. SEAS 8 TO 11 FT. .48 HOUR FORECAST EXCEPT AS NOTED IN ISAAC WARNINGS...WITHIN 330 NM N SEMICIRCLE...240 NM SE QUADRANT...AND 120 NM SW QUADRANT OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. ELSEWHERE FROM 18N TO 24N BETWEEN 58W AND 75W AND FROM 12N TO 18N BETWEEN 58W AND 67W NE TO E WINDS 20 TO 25 KT...EXCEPT E TO SE WINDS E OF 68W. .ATLC LOW PRES JUST E OF AREA NEAR 11.5N34.5W 1009 MB. OVER FORECAST WATERS WITHIN 300 NM N QUADRANT OF LOW WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. .24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 13.5N39.5W 1007 MB. WITHIN 300 NM N SEMICIRLCE AND 90 NM S SEMICIRCLE OF LOW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT...HIGHEST N SEMICIRCLE. .48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 15N45.5W 1005 MB. WITHIN 360 NM N SEMICIRCLE AND 120 NM S SEMICIRCLE OF LOW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT...HIGHEST N SEMICIRCLE. .CARIBBEAN N OF 19N E OF 76W INCLUDING WINDWARD PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. FROM 11N TO 15N BETWEEN 71W AND 78W AND FROM 15N TO 18N BETWEEN 70W AND 73W NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT. .18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .CARIBBEAN S OF 19N W OF 85W INCLUDING GULF OF HONDURAS...E TO SE WINDS 20 TO 25 KT. SEAS TO 8 FT. .18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.