URNT12 KNHC 061811 VORTEX DATA MESSAGE A. 06/1816Z B. 28 DEG 20 MIN N 66 DEG 44 MIN W C. 700 MB 2968 M D. 80 KT E. 311 DEG 82 NM F. 318 DEG 45 KT G. 308 DEG 56 NM H. EXTRAP 989 MB I. 4 C/ 3078 M J. 10 C/ 3039 M K. 2 C/ NA L. NA M. NA N. 1345/7 O. 0.1/ 15 NM P. AF984 1915A MICHELLE OB 08 MAX FL WIND 45 KT NW QUAD 1801Z. SLP EXTRAP FROM 700MB. SONDE SLP MEASURED 20NM NE OF FIX POSN WAS 996 MB MAX FLT LVL TEMP 15C AT 136/55NM