TXNT21 KNES 191820 TCSNTL A. 20L (SABASTIEN) B. 19/1800Z C. 20.4N D. 59.4W E. THREE/GOES-E F. T1.5/1.5/D1.0/24HRS G. IR/EIR/VIS H. REMARKS...CIRCULAR, TIGHTLY DEFINED CLOUD LINES AND A CENTER MORE THAN 1.25 DEGREES TO THE WEST OF A LARGE COLD OVERCAST RESULT IN A DT OF 1.5 USING THE SHEAR PATTERN. PT AGREES WHILE MET IS 1.0. FT IS BASED ON PT DUE TO PULSING CONVECTION NEAR THE CENTER. I. ADDL POSITIONS NIL ...TURK