000 FKNT21 KNHC 020849 TCANT1 HURRICANE IRMA ICAO ADVISORY NUMBER 12 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112017 0900 UTC SAT SEP 02 2017 TC ADVISORY DTG: 20170902/0900Z TCAC: KNHC TC: IRMA NR: 012 PSN: N1900 W04148 MOV: W 12KT C: 0970HPA MAX WIND: 095KT FCST PSN + 06 HR: 021500 N1852 W04304 FCST MAX WIND + 06 HR: 100KT FCST PSN + 12 HR: 022100 N1840 W04418 FCST MAX WIND + 12 HR: 100KT FCST PSN + 18 HR: 030300 N1825 W04530 FCST MAX WIND + 18 HR: 100KT FCST PSN + 24 HR: 030900 N1809 W04639 FCST MAX WIND + 24 HR: 100KT RMK THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: 20170902/1500Z ..