000 FKNT24 KNHC 291157 TCANT4 HURRICANE IDA SPECIAL ICAO ADVISORY NUMBER 13 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092021 1200 UTC SUN AUG 29 2021 TC ADVISORY DTG: 20210829/1200Z TCAC: KNHC TC: IDA ADVISORY NR: 2021/013 OBS PSN: 29/1200Z N2830 W08936 MOV: NW 13KT INTST CHANGE: INTSF C: 0933HPA MAX WIND: 130KT FCST PSN +6 HR: 29/1500Z N2851 W09000 FCST MAX WIND +6 HR: 135KT FCST PSN +12 HR: 29/2100Z N2933 W09034 FCST MAX WIND +12 HR: 120KT FCST PSN +18 HR: 30/0300Z N3015 W09055 FCST MAX WIND +18 HR: 085KT FCST PSN +24 HR: 30/0900Z N3100 W09104 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: 20210829/1500Z $$