000 FKNT24 KNHC 230859 TCANT4 TROPICAL STORM ISAAC ICAO ADVISORY NUMBER 9 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092012 0900 UTC THU AUG 23 2012 TC ADVISORY DTG: 20120823/0900Z TCAC: KNHC TC: ISAAC NR: 009 PSN: N1518 W06400 MOV: W 10KT C: 1004HPA MAX WIND: 035KT FCST PSN + 06 HR: 231500 N1554 W06516 FCST MAX WIND + 06 HR: 040KT FCST PSN + 12 HR: 232100 N1622 W06631 FCST MAX WIND + 12 HR: 045KT FCST PSN + 18 HR: 240300 N1643 W06746 FCST MAX WIND + 18 HR: 050KT FCST PSN + 24 HR: 240900 N1707 W06904 FCST MAX WIND + 24 HR: 055KT RMK THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: 20120823/1500Z ..