000 FKNT21 KNHC 091457 TCANT1 HURRICANE IRMA ICAO ADVISORY NUMBER 42 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112017 1500 UTC SAT SEP 09 2017 TC ADVISORY DTG: 20170909/1500Z TCAC: KNHC TC: IRMA NR: 042 PSN: N2248 W07948 MOV: W 08KT C: 0941HPA MAX WIND: 110KT FCST PSN + 06 HR: 092100 N2312 W08024 FCST MAX WIND + 06 HR: 115KT FCST PSN + 12 HR: 100300 N2340 W08055 FCST MAX WIND + 12 HR: 115KT FCST PSN + 18 HR: 100900 N2413 W08122 FCST MAX WIND + 18 HR: 120KT FCST PSN + 24 HR: 101500 N2458 W08143 FCST MAX WIND + 24 HR: 120KT RMK THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: 20170909/2100Z ..