URNT12 KMIA 281554 AF968 0311A GRACE OB 12 KMIA DETAILED VORTEX DATA MESSAGE A. 28/1544Z B. 32 DEG 28 MIN N 68 DEG 09 MIN W C. 850 MB 1267 M D. 65 KT E. 090 DEG 21 NM F. 170 DEG 58 KT G. 090 DEG 21 NM H. 983 MB EXTRAPOLATED I. 16 C/ 1452 M J. 18 C/ 1456 M K. 18 C/ NOBS L. CLOSED EYE M. C 35 N. 32 DEG 28 MIN N 68 DEG 09 MIN W 28/1544Z O. 12345/01 P. 5/ 2 NM Q. MAX FL WND 58 E QUAD 28/1537Z, SLP EXTRAP FM 850 MB, FL WND GUST 63 AT 28/1537Z;