000 FKPZ22 KNHC 221456 TCAPZ2 TROPICAL STORM GREG ICAO ADVISORY NUMBER 21 NWS NATIONAL HURRICANE CENTER MIAMI FL EP072017 1500 UTC SAT JUL 22 2017 TC ADVISORY DTG: 20170722/1500Z TCAC: KNHC TC: GREG NR: 021 PSN: N1506 W12412 MOV: W 11KT C: 1001HPA MAX WIND: 045KT FCST PSN + 06 HR: 222100 N1506 W12524 FCST MAX WIND + 06 HR: 045KT FCST PSN + 12 HR: 230300 N1504 W12633 FCST MAX WIND + 12 HR: 045KT FCST PSN + 18 HR: 230900 N1501 W12739 FCST MAX WIND + 18 HR: 045KT FCST PSN + 24 HR: 231500 N1458 W12843 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: 20170722/2100Z ..