000 FKNT21 KNHC 112036 TCANT1 TROPICAL STORM IRMA ICAO ADVISORY NUMBER 51 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112017 2100 UTC MON SEP 11 2017 TC ADVISORY DTG: 20170911/2100Z TCAC: KNHC TC: IRMA NR: 051 PSN: N3130 W08400 MOV: NNW 15KT C: 0985HPA MAX WIND: 045KT FCST PSN + 06 HR: 120300 N3234 W08500 FCST MAX WIND + 06 HR: 040KT FCST PSN + 12 HR: 120900 N3326 W08557 FCST MAX WIND + 12 HR: 035KT FCST PSN + 18 HR: 121500 N3409 W08651 FCST MAX WIND + 18 HR: 030KT FCST PSN + 24 HR: 122100 N3449 W08740 FCST MAX WIND + 24 HR: 030KT RMK THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: 20170912/0300Z ..