000 FKNT21 KNHC 040854 TCANT1 HURRICANE IRMA ICAO ADVISORY NUMBER 20 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112017 0900 UTC MON SEP 04 2017 TC ADVISORY DTG: 20170904/0900Z TCAC: KNHC TC: IRMA NR: 020 PSN: N1654 W05218 MOV: WSW 12KT C: 0961HPA MAX WIND: 100KT FCST PSN + 06 HR: 041500 N1646 W05322 FCST MAX WIND + 06 HR: 105KT FCST PSN + 12 HR: 042100 N1640 W05428 FCST MAX WIND + 12 HR: 105KT FCST PSN + 18 HR: 050300 N1637 W05537 FCST MAX WIND + 18 HR: 110KT FCST PSN + 24 HR: 050900 N1642 W05648 FCST MAX WIND + 24 HR: 110KT RMK THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: 20170904/1500Z ..