000 FKNT22 KNHC 181450 TCANT2 HURRICANE GRACE ICAO ADVISORY NUMBER 21 NWS NATIONAL HURRICANE CENTER MIAMI FL AL072021 1500 UTC WED AUG 18 2021 TC ADVISORY DTG: 20210818/1500Z TCAC: KNHC TC: GRACE ADVISORY NR: 2021/021 OBS PSN: 18/1500Z N1924 W08212 MOV: WNW 13KT INTST CHANGE: INTSF C: 0992HPA MAX WIND: 065KT FCST PSN +6 HR: 18/2100Z N1935 W08344 FCST MAX WIND +6 HR: 070KT FCST PSN +12 HR: 19/0300Z N1951 W08516 FCST MAX WIND +12 HR: 070KT FCST PSN +18 HR: 19/0900Z N2009 W08649 FCST MAX WIND +18 HR: 075KT FCST PSN +24 HR: 19/1500Z N2022 W08819 FCST MAX WIND +24 HR: 070KT RMK: THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: 20210818/2100Z $$