000 FKNT24 KNHC 231457 TCANT4 TROPICAL STORM MARCO ICAO ADVISORY NUMBER 13 NWS NATIONAL HURRICANE CENTER MIAMI FL AL142020 1500 UTC SUN AUG 23 2020 TC ADVISORY DTG: 20200823/1500Z TCAC: KNHC TC: MARCO ADVISORY NR: 2020/013 OBS PSN: 23/1500Z N2442 W08718 MOV: NNW 12KT C: 0993HPA MAX WIND: 060KT FCST PSN +6 HR: 23/2100Z N2549 W08749 FCST MAX WIND +6 HR: 065KT FCST PSN +12 HR: 24/0300Z N2651 W08821 FCST MAX WIND +12 HR: 065KT FCST PSN +18 HR: 24/0900Z N2745 W08851 FCST MAX WIND +18 HR: 065KT FCST PSN +24 HR: 24/1500Z N2831 W08925 FCST MAX WIND +24 HR: 065KT RMK: THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: 20200823/2100Z ??