TXNT21 KNES 151812 TCSNTL A. 11L (JOSEPHINE) B. 15/1730Z C. 19.7N D. 60.8W E. THREE/GOES-E F. T2.5/2.5 G. IR/EIR/VIS H. REMARKS...SYSTEM IS CHARACTERIZED BY CIRCULAR, TIGHTLY DEFINED CLOUD LINES AND A CENTER LESS THAN 1.25 DEGREES FROM A LARGE COLD OVERCAST RESULTING IN A DT OF 2.0 USING THE SHEAR PATTERN. MET AGREES WHILE PT IS 2.5. FT IS BASED ON PT BECAUSE CLOUD FEATURES ARE NOT CLEAR CUT. I. ADDL POSITIONS NIL ...TURK