000 FZNT02 KNHC 230357 HSFAT2 HIGH SEAS FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 0430 UTC THU SEP 23 2021 SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES.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 0000 UTC THU SEP 23. 24 HOUR FORECAST VALID 0000 UTC FRI SEP 24. 48 HOUR FORECAST VALID 0000 UTC SAT SEP 25. .WARNINGS. ...ATLANTIC TROPICAL STORM WARNING... .TROPICAL DEPRESSION EIGHTEEN NEAR 10.2N 35.0W 1008 MB AT 0300 UTC SEP 23 MOVING W OR 275 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 11N35W TO 11N36W TO 12N36W TO 13N36W TO 14N35W TO 11N35W WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. .24 HOUR FORECAST TROPICAL STORM EIGHTEEN NEAR 10.9N 39.6W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S SEMICIRCLE...50 NM NE QUADRANT AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM NE AND 120 NM NW SEMICIRCLES WITH SEAS TO 14 FT. ELSEWHERE WITHIN 11N37W TO 10N39W TO 11N42W TO 13N42W TO 14N39W TO 11N37W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 11N37W TO 09N40W TO 11N43W TO 13N43W TO 15N37W TO 11N37W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. .48 HOUR FORECAST TROPICAL STORM EIGHTEEN NEAR 12.0N 44.3W. MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 70 NM NE QUADRANT...50 NM SE QUADRANT...20 NM SW QUADRANT...AND 40 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM NE AND 150 NM NW SEMICIRCLES WITH SEAS TO 19 FT. ELSEWHERE WITHIN 11N43W TO 11N45W TO 12N47W TO 15N46W TO 14N43W TO 11N43W WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 11N42W TO 11N47W TO 13N48W TO 16N47W TO 16N43W TO 11N42W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED SWELL. .60 HOUR FORECAST HURRICANE EIGHTEEN NEAR 12.6N 46.0W. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 KT. .72 HOUR FORECAST HURRICANE EIGHTEEN NEAR 13.2N 47.5W. MAXIMUM SUSTAINED WINDS 80 KT GUSTS 100 KT. EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR FORECAST HURRICANE EIGHTEEN NEAR 14.5N 50.2W. MAXIMUM SUSTAINED WINDS 90 KT GUSTS 110 KT. .120 HOUR FORECAST HURRICANE EIGHTEEN NEAR 16.0N 53.3W. MAXIMUM SUSTAINED WINDS 100 KT GUSTS 120 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. .TROPICAL DEPRESSION ROSE NEAR 24.6N 40.9W 1010 MB AT 0300 UTC SEP 23 MOVING WNW OR 300 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 24N39W TO 24N40W TO 26N41W TO 27N38W TO 26N37W TO 24N39W WINDS 20 TO 30 KT. SEAS 9 TO 11 FT. ELSEWHERE WITHIN 24N38W TO 24N50W TO 28N60W TO 31N62W TO 31N35W TO 24N38W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT PRIMARILY IN N SWELL. .12 HOUR FORECAST POST-TROPICAL REMNANT LOW ROSE NEAR 25.7N 41.9W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. .24 HOUR FORECAST POST-TROPICAL REMNANT LOW ROSE NEAR 27.2N 42.4W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 26N38W TO 26N40W TO 27N42W TO 29N41W TO 29N38W TO 26N38W WINDS 20 TO 25 KT. SEAS 9 TO 10 FT. ELSEWHERE WITHIN 28N49W TO 28N51W TO 30N59W TO 31N61W TO 31N46W TO 28N49W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT PRIMARILY IN N TO NE SWELL. .48 HOUR FORECAST POST-TROPICAL REMNANT LOW ROSE NEAR 29.0N 39.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 29N38W TO 28N35W TO 26N36W TO 27N37W TO 29N38W SE WINDS 20 TO 25 KT. SEAS TO 8 FT. .72 HOUR FORECAST POST-TROPICAL REMNANT LOW ROSE NEAR 30.2N 33.5W. 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. .ATLC LOW PRESSURE...REMNANTS OF PETER...NEAR 22N67W 1008 MB. WITHIN 22N65W TO 21N66W TO 23N68W TO 26N68W TO 26N66W TO 22N65W E TO SE WINDS 20 TO 25 KT. SEAS 8 FT. .12 HOUR FORECAST LOW PRESSURE NEAR 23.5N68W 1010 MB. WITHIN 30N62W TO 29N63W TO 30N66W TO 31N66W TO 31N62W TO 30N62W E TO SE WINDS 20 TO 25 KT. SEAS 8 FT. .24 HOUR FORECAST LOW PRESSURE NEAR 24.5N67W 1011 MB. WITHIN 30N61W TO 30N63W TO 31N64W TO 31N61W TO 30N61W E TO SE WINDS 20 TO 25 KT. SEAS 8 FT. ELSEWHERE WITHIN 28N49W TO 28N51W TO 30N59W TO 31N61W TO 31N46W TO 28N49W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN N TO NE SWELL. .48 HOUR FORECAST LOW PRESSURE NEAR 30N64W 1013 MB. CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .GULF OF MEXICO COLD FRONT FROM 30N84W TO 21N97W. WITHIN 23N97W TO 23N98W TO 27N97W TO 29N97W TO 30N92W TO 23N97W N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. .24 HOUR FORECAST COLD FRONT FROM 26.5N82W TO 21N95W TO 18N95W. WITHIN 19N95W TO 19N96W TO 20N97W TO 20N95W TO 19N95W...INCLUDING WITHIN 60 NM OF VERACRUZ... NW TO N WINDS 20 TO 25 KT. SEAS 8 FT. .36 HOUR FORECAST STATIONARY FRONT FROM 26N82W TO 21N95W TO 18N95W CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. .REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT. $$ .FORECASTER CHRISTENSEN. NATIONAL HURRICANE CENTER.