URNT12 KMIA 211322 AF980 0503A ANDREW OB 08 KMIA DETAILED VORTEX DATA MESSAGE A. 21/1312Z B. 24 DEG 28 MIN N 64 DEG 17 MIN W C. NA D. 50 KT E. 270 DEG 5 NM F. 263 DEG 36 KT G. 174 DEG 2 NM H. EXTRAP 1007 MB I. 24 C/ 202 M J. 26 C/ 273 M K. 23 C/ NA L. CLOSED M. E 040/20/15 N. 24 DEG 28 MIN N 64 DEG 17 MIN W 21/1312Z O. 12345/1 P. 1/1 NM Q. MAX FL WIND 51 KT N QUAD 1127Z. SLP EXTRAP FROM 1500FT. INNER BAND FORMING, DECREASING EYE DIAMETER;