000 FKPZ23 KNHC 311449 TCAPZ3 TROPICAL STORM HILDA ICAO ADVISORY NUMBER 4 NWS NATIONAL HURRICANE CENTER MIAMI FL EP082021 1500 UTC SAT JUL 31 2021 TC ADVISORY DTG: 20210731/1500Z TCAC: KNHC TC: HILDA ADVISORY NR: 2021/004 OBS PSN: 31/1500Z N1342 W11642 MOV: WNW 11KT INTST CHANGE: INTSF C: 0994HPA MAX WIND: 060KT FCST PSN +6 HR: 31/2100Z N1354 W11742 FCST MAX WIND +6 HR: 065KT FCST PSN +12 HR: 01/0300Z N1406 W11837 FCST MAX WIND +12 HR: 075KT FCST PSN +18 HR: 01/0900Z N1418 W11928 FCST MAX WIND +18 HR: 080KT FCST PSN +24 HR: 01/1500Z N1433 W12018 FCST MAX WIND +24 HR: 085KT RMK: THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: 20210731/2100Z $$