TXIO23 KNES 181211 TCSNIO A. TROPICAL DISTURBANCE (99B) B. 18/1130Z C. 20.3N D. 90.6E E. THREE/MET-9 F. T1.5/1.5 G. IR/EIR/VIS H. REMARKS...SYSTEM IS CHARACTERIZED BY CIRCULARLY DEFINED CLOUD LINES AND A CENTER GREATER THAN 1.25 DEGREES FROM A LARGE AREA OF COLD OVERCAST RESULTING IN A DT OF 1.5. THE MET AND PT ARE ALSO 1.5. THE FT IS BASED ON THE MET BECAUSE CLOUD FEATURES ARE NOT CLEAR CUT. I. ADDL POSITIONS NIL ...GATLING