473 FZNT02 KNHC 192056 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 2230 UTC TUE SEP 19 2023 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 TUE SEP 19. 24 HOUR FORECAST VALID 1800 UTC WED SEP 20. 48 HOUR FORECAST VALID 1800 UTC THU SEP 21. .WARNINGS. ...ATLC HURRICANE WARNING... .HURRICANE NIGEL JUST N OF AREA NEAR 31.8N 54.7W 974 MB AT 2100 UTC SEP 19 MOVING NNW OR 335 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 85 KT GUSTS 105 KT. TROPICAL STORM FORCE WINDS WITHIN 150 NM NE QUADRANT...140 NM SE QUADRANT...100 NM SW QUADRANT...AND 130 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM E SEMICIRCLE AND 210 NM W SEMICIRCLE WITH SEAS TO 34 FT. ELSEWHERE WITHIN 270 NM E SEMICIRCLE...180 NM SW QUADRANT AND 240 NM NW QUADRANT WINDS 20 TO 33 KT. SEAS 8 TO 12 FT N OF A LINE FROM 31N45W TO 25N50W TO 22N57W TO 25N62W TO 31N60W. .24 HOUR FORECAST HURRICANE NIGEL WELL N OF AREA NEAR 36.7N 53.3W. MAXIMUM SUSTAINED WINDS 90 KT GUSTS 110 KT. TROPICAL STORM FORCE WINDS WITHIN 150 NM NE QUADRANT...160 NM SE QUADRANT...120 NM SW QUADRANT...AND 110 NM NW QUADRANT. OVER FORECAST WATERS N OF 30N BETWEEN 48W AND 58W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED SWELL. SEE PART 1. .48 HOUR FORECAST HURRICANE NIGEL WELL N OF AREA NEAR 42.8N 42.9W. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS WITHIN 160 NM NE AND SW QUADRANTS...100 NM NW QUADRANT AND 180 NM SE QUADRANT. OVER FORECAST WATERS WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. SEE PART 1. .60 HOUR FORECAST POST-TROPICAL EXTRATROPICAL NIGEL NEAR 45.7N 35.0W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. .72 HOUR FORECAST POST-TROPICAL EXTRATROPICAL NIGEL NEAR 48.6N 28.5W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST POST-TROPICAL EXTRATROPICAL NIGEL NEAR 56.0N 20.5W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. .120 HOUR FORECAST POST-TROPICAL EXTRATROPICAL NIGEL NEAR 58.0N 21.5W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 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. .ATLC FROM 18N TO 26N E OF 44W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE SWELL. .24 HOUR FORECAST FROM 18N TO 25N E OF 46W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NE SWELL. .48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .CARIBBEAN 12 HOUR FORECAST FROM 11N TO 14N BETWEEN 70W AND 75W...INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .36 HOUR FORECAST FROM 11N TO 13N BETWEEN 70W AND 75W... INCLUDING THE GULF OF VENEZUELA...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .48 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 GR. NATIONAL HURRICANE CENTER.