000 FKNT21 KNHC 310232 TCANT1 TROPICAL STORM IRMA ICAO ADVISORY NUMBER 3 NWS NATIONAL HURRICANE CENTER MIAMI FL AL112017 0300 UTC THU AUG 31 2017 TC ADVISORY DTG: 20170831/0300Z TCAC: KNHC TC: IRMA NR: 003 PSN: N1624 W03212 MOV: W 10KT C: 0999HPA MAX WIND: 055KT FCST PSN + 06 HR: 310900 N1640 W03308 FCST MAX WIND + 06 HR: 060KT FCST PSN + 12 HR: 311500 N1655 W03404 FCST MAX WIND + 12 HR: 070KT FCST PSN + 18 HR: 312100 N1710 W03501 FCST MAX WIND + 18 HR: 075KT FCST PSN + 24 HR: 010300 N1724 W03557 FCST MAX WIND + 24 HR: 080KT RMK THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: 20170831/0900Z ..