000 FKNT21 KNHC 211434 TCANT1 POST-TROPICAL CYCLONE ARLENE ICAO ADVISORY NUMBER 9 NWS NATIONAL HURRICANE CENTER MIAMI FL AL012017 1500 UTC FRI APR 21 2017 TC ADVISORY DTG: 20170421/1500Z TCAC: KNHC TC: ARLENE NR: 009 PSN: N3918 W04954 MOV: SW 20KT C: 0995HPA MAX WIND: 045KT FCST PSN + 06 HR: 212100 N3806 W05058 FCST MAX WIND + 06 HR: 040KT FCST PSN + 12 HR: 220300 N//// W///// FCST MAX WIND + 12 HR: ///KT FCST PSN + 18 HR: 220900 N//// W///// FCST MAX WIND + 18 HR: ///KT FCST PSN + 24 HR: 221500 N//// W///// FCST MAX WIND + 24 HR: ///KT RMK THE FORECAST POSITION INFORMATION IN THIS PRODUCT IS INTERPOLATED FROM OFFICIAL FORECAST DATA VALID AT 0000... 0600...1200...AND 1800Z. NXT MSG: NO MSG EXP ..