000 FKNT21 KNHC 032051 TCANT1 HURRICANE IRMA ICAO ADVISORY NUMBER 18 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112017 2100 UTC SUN SEP 03 2017 TC ADVISORY DTG: 20170903/2100Z TCAC: KNHC TC: IRMA NR: 018 PSN: N1736 W04948 MOV: W 12KT C: 0969HPA MAX WIND: 100KT FCST PSN + 06 HR: 040300 N1720 W05052 FCST MAX WIND + 06 HR: 105KT FCST PSN + 12 HR: 040900 N1706 W05155 FCST MAX WIND + 12 HR: 105KT FCST PSN + 18 HR: 041500 N1654 W05258 FCST MAX WIND + 18 HR: 110KT FCST PSN + 24 HR: 042100 N1648 W05404 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: 20170904/0300Z ..