000 FKNT24 KNHC 181634 TCANT4 SUBTROPICAL STORM ALPHA SPECIAL ICAO ADVISORY NUMBER 1 NWS NATIONAL HURRICANE CENTER MIAMI FL AL242020 1630 UTC FRI SEP 18 2020 TC ADVISORY DTG: 20200918/1630Z TCAC: KNHC TC: ALPHA ADVISORY NR: 2020/001 OBS PSN: 18/1630Z N3954 W00918 MOV: NE 15KT C: 0999HPA MAX WIND: 045KT FCST PSN +6 HR: 18/2100Z N4048 W00816 FCST MAX WIND +6 HR: 035KT FCST PSN +12 HR: 19/0300Z N4210 W00640 FCST MAX WIND +12 HR: 030KT FCST PSN +18 HR: 19/0900Z N4331 W00501 FCST MAX WIND +18 HR: 030KT FCST PSN +24 HR: 19/1500Z N//// W///// FCST MAX WIND +24 HR: ///KT RMK: THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: 20200918/2100Z ??