000 FKNT24 KNHC 212051 TCANT4 TROPICAL STORM ISAAC ICAO ADVISORY NUMBER 3 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092012 2100 UTC TUE AUG 21 2012 TC ADVISORY DTG: 20120821/2100Z TCAC: KNHC TC: ISAAC NR: 003 PSN: N1524 W05354 MOV: W 15KT C: 1006HPA MAX WIND: 035KT FCST PSN + 06 HR: 220300 N1532 W05534 FCST MAX WIND + 06 HR: 040KT FCST PSN + 12 HR: 220900 N1540 W05715 FCST MAX WIND + 12 HR: 040KT FCST PSN + 18 HR: 221500 N1549 W05857 FCST MAX WIND + 18 HR: 045KT FCST PSN + 24 HR: 222100 N1600 W06037 FCST MAX WIND + 24 HR: 045KT RMK THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: 20120822/0300Z ..