176 FZNT02 KNHC 131523 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1630 UTC THU SEP 13 2018 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 1200 UTC THU SEP 13. 24 HOUR FORECAST VALID 1200 UTC FRI SEP 14. 48 HOUR FORECAST VALID 1200 UTC SAT SEP 15. .WARNINGS. ...HURRICANE WARNING... .HURRICANE FLORENCE NEAR 33.4N 75.5W 955 MB AT 1500 UTC SEP 13 MOVING NW OR 315 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE WINDS WITHIN 170 NM NE...150 NM SE...110 NM SW AND 140 NM NW QUADRANTS. SEAS 12 FT OR GREATER WITHIN 240 NM S SEMICIRCLE...400 NM NE AND 300 NM NW QUADRANTS WITH SEAS TO 42 FT. ELSEWHERE OVER FORECAST WATERS WINDS 20 TO 33 KT WITHIN 210 NM S SEMICIRCLE. REMAINDER OF AREA WITHIN 420 NM S SEMICIRCLE WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL. NUMEROUS TSTMS N OF 30.5N BETWEEN 73W AND 80W. .24 HOUR FORECAST HURRICANE FLORENCE INLAND NEAR 34.2N 77.8W. MAXIMUM SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER N OF THE AREA. ELSEWHERE WITHIN 360 NM S SEMICIRCLE WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL. .48 HOUR FORECAST TROPICAL STORM FLORENCE INLAND NEAR 34.0N 79.6W. MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE WINDS AND 12 FT SEAS N OF THE AREA. .72 HOUR FORECAST TROPICAL DEPRESSION FLORENCE INLAND NEAR 34.3N 81.8W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST TROPICAL DEPRESSION FLORENCE NEAR 34.3N 81.8W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. .120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL FLORENCE NEAR 40.3N 79.2W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT. ...TROPICAL STORM WARNING... .TROPICAL STORM HELENE NEAR 24.8N 37.3W 989 MB AT 1500 UTC SEP 13 MOVING N OR 355 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM N AND 90 NM S SEMICIRCLES. SEAS 12 FT OR GREATER WITHIN 240 NM S SEMICIRCLE...270 NM NE AND 300 NM NW QUADRANTS WITH SEAS TO 29 FT. REMAINDER OF AREA N OF 16N E OF 46W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL. SCATTERED TSTMS N OF 24.5N BETWEEN 35W AND 40W. .24 HOUR FORECAST TROPICAL STORM HELENE NEAR 30.8N 36.6W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 120 NM E SEMICIRCLE...60 NM SW AND 90 NM NW QUADRANTS. SEAS 12 FT OR GREATER AND WINDS 20 TO 33 KT WITHIN 210 NM OF CENTER...WITH SEAS TO 30 FT. REMAINDER OF AREA N OF 23N E OF 60W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL. .48 HOUR FORECAST TROPICAL STORM HELENE NEAR 37.2N 33.3W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE WINDS AND 12 FT SEAS N OF THE AREA. .72 HOUR FORECAST TROPICAL STORM HELENE NEAR 40.5N 26.0W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST TROPICAL STORM HELENE NEAR 40.5N 26.0W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. .120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL HELENE NEAR 51.5N 9.0W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. ...TROPICAL STORM WARNING... .TROPICAL STORM ISAAC NEAR 14.9N 61.8W 1006 MB AT 1500 UTC SEP 13 MOVING W OR 265 DEG AT 17 KT. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 140 NM NE AND 120 NM NW QUADRANTS. SEAS 12 FT OR GREATER WITHIN 210 NM NE...120 NM SE...15 NM SW AND 180 NM NW QUADRANTS WITH SEAS TO 18 FT. REMAINDER OF AREA FROM 13N TO 23N BETWEEN 53W AND 66W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL. SCATTERED TSTMS FROM 14N TO 16N BETWEEN 56W AND 61W. .24 HOUR FORECAST TROPICAL STORM ISAAC NEAR 14.9N 67.0W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 90 NM NE AND 80 NM NW QUADRANTS. SEAS 12 FT OR GREATER WITHIN 120 NM NE QUADRANT WITH SEAS TO 15 FT. ELSEWHERE WITHIN 120 NM N AND 30 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA FROM 15N TO 26N BETWEEN 59W AND 69W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL. .48 HOUR FORECAST TROPICAL STORM ISAAC NEAR 15.0N 72.3W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 70 NM N SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 60 NM NE QUADRANT WITH SEAS TO 13 FT. ELSEWHERE WITHIN 75 NM N AND 15 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 10 FT. .72 HOUR FORECAST TROPICAL STORM ISAAC NEAR 15.5N 76.5W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST TROPICAL DEPRESSION ISAAC NEAR 15.5N 76.5W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. .120 HOUR FORECAST...DISSIPATED. ...TROPICAL STORM WARNING... .SUBTROPICAL STORM JOYCE NEAR 33.7N 43.7W 1006 MB AT 1500 UTC SEP 13 MOVING W-SW OR 245 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM N SEMICIRCLE. SEAS 12 FT OR GREATER WITHIN 300 NM W SEMICIRCLE...360 NM NE AND 120 NM SE QUADRANTS WITH SEAS TO 18 FT. N OF 29N E OF 53W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN N TO NE SWELL. SCATTERED TSTMS N OF 31N BETWEEN 40W AND 43W. .24 HOUR FORECAST TROPICAL STORM JOYCE NEAR 32.2N 44.4W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. SEAS 12 FT OR GREATER AND WINDS 20 TO 33 KT N OF AREA. .48 HOUR FORECAST TROPICAL STORM JOYCE NEAR 32.5N 42.6W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. SEAS 12 FT OR GREATER AND WINDS 20 TO 33 KT N OF AREA. N OF 30N BETWEEN 40W AND 47W WINDS 20 KT OR LESS. SEAS TO 9 FT IN NW TO N SWELL. .72 HOUR FORECAST TROPICAL STORM JOYCE NEAR 35.5N 38.5W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 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. .GULF OF MEXICO LOW PRES 24N93W 1009 MB WITH TROUGH FROM 27N95W TO 20N93W. WITHIN 175 NM NE QUADRANT E TO SE WINDS 20 TO 25 KT. SEAS 8 FT. ELSEWHERE WITHIN 150 NM NE SEMICIRCLE WINDS 20 KT OR LESS. SEAS TO 9 FT IN SE SWELL. SCATTERED TSTMS N OF 22N BETWEEN 91W AND 95W. .24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 27N96W 1009 MB WITH TROUGH S TO 19N94W. WITHIN 120 NE QUADRANT OF LOW E TO SE WINDS 20 TO 25 KT. SEAS 8 FT. SCATTERED TSTMS. ELSEWHERE FROM 26N TO 28N BETWEEN 90W AND 94W WINDS 20 KT OR LESS. SEAS TO 8 FT. .42 HOUR FORECAST...DISSIPATED. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER ERA. NATIONAL HURRICANE CENTER.