041 FZNT02 KNHC 142049 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 2230 UTC FRI SEP 14 2018 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1800 UTC FRI SEP 14. 24 HOUR FORECAST VALID 1800 UTC SAT SEP 15. 48 HOUR FORECAST VALID 1800 UTC SUN SEP 16. .WARNINGS. ..TROPICAL STORM WARNING... .TROPICAL STORM HELENE NEAR 34.1N 36.8W 988 MB AT 2100 UTC SEP 14 MOVING N OR 010 DEG AT 16 KT. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM NW AND SE QUADRANTS...140 NM NE AND 70 NM SW QUADRANTS. WINDS 20 TO 33 KT AND SEAS 12 FT OR GREATER WITHIN 240 NM NE...300 NM SE...210 NM SW AND 180 NM NW QUADRANTS WITH SEAS TO 15 FT S OF 31N. ELSEWHERE N OF 26N E OF 41W WINDS 20 KT OR LESS. SEAS 8 TO 14 FT PRIMARILY IN MIXED SWELL. .24 HOUR FORECAST TROPICAL STORM HELENE NEAR 38.9N 33.7W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 110 NM NW AND SE QUADRANTS...130 NM NE AND 90 NM SW QUADRANTS. SEAS 12 FT OR GREATER N OF AREA. OVER FORECAST WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .48 HOUR FORECAST POST-TROPICAL EXTRATROPICAL HELENE NEAR 43.3N 25.2W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 130 NM NE AND SW QUADRANTS...110 NM NW AND 150 NM SE QUADRANTS. SEAS 12 FT OR GREATER N OF AREA. OVER FORECAST WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .72 HOUR FORECAST POST-TROPICAL EXTRATROPICAL HELENE NEAR 49.5N 12.9W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST...DISSIPATED. ...TROPICAL STORM WARNING... .TROPICAL STORM JOYCE NEAR 31.4N 44.1W 1002 MB AT 2100 UTC SEP 14 MOVING SE OR 125 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM E SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 30 NM E SEMICIRCLE AND 180 NM NW QUADRANTS. ELSEWHERE FORECAST WATERS WITHIN 75 NM S SEMICIRCLE WINDS 20 TO 30 KT WITH SCATTERED TSTMS. SEAS TO 11 FT. REMAINDER FORECAST WATERS WITHIN AREA BOUNDED BY 31N52W TO 31N41W TO 27N50W TO 31N52W WINDS 20 KT OR LESS. SEAS TO 10 FT PRIMARILY IN MIXED SWELL. .24 HOUR FORECAST TROPICAL STORM JOYCE NEAR 32.6N 41.1W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 30 NM OF CENTER EXCEPT 40 NM NE QUADRANT. ASSOCIATED CONDITIONS N OF 31N. .48 HOUR FORECAST TROPICAL DEPRESSION JOYCE NEAR 35.0N 35.6W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. OVER FORECAST WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .72 HOUR FORECAST TROPICAL DEPRESSION JOYCE NEAR 35.5N 28.5W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST...DISSIPATED. ...TROPICAL STORM WARNING... .TROPICAL STORM ISAAC NEAR 15.3N 68.2W 1002 MB AT 2100 UTC SEP 14 MOVING W OR 270 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM E SEMICIRCLE AND 30 NM NW QUADRANT. SEAS TO 12 FT WITH 30 NM NE QUADRANT. WINDS 20 TO 33 KT AND SEAS 8 TO 11 FT ELSEWHERE WITHIN 150 NM N SEMICIRCLE. SCATTERED TSTMS WITHIN 180 NM OF 16N69W. .24 HOUR FORECAST TROPICAL STORM ISAAC NEAR 15.4N 72.2W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. LITTLE CHANGE IN RADIUS OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER. WINDS 20 TO 33 KT AND SEAS 8 TO 11 FT ELSEWHERE WITHIN 90 NM N AND 30 NM S SEMICIRCLES OF CENTER. SCATTERED TSTMS WITHIN 150 NM OF CENTER. .48 HOUR FORECAST TROPICAL DEPRESSION ISAAC NEAR 16.2N 76.3W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT NEAR CENTER. ELSEWHERE WITHIN 60 NM OF CENTER WINDS 20 TO 30 KT. SEAS TO 11 FT. .72 HOUR FORECAST TROPICAL DEPRESSION ISAAC NEAR 17.5N 80.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST...DISSIPATED. 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. .ATLC N OF 30.5N BETWEEN 73W AND 80W SW WINDS 20 TO 25 KT. SEAS TO 9 FT. .24 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 NELSON. NATIONAL HURRICANE CENTER.