TXPQ25 KNES 121554 TCSWNP A. TROPICAL DISTURBANCE (91W) B. 12/1430Z C. 10.4N D. 109.7E E. FIVE/HIMAWARI-8 F. T1.5/1.5/D1.0/24HRS G. IR/EIR/SWIR/AMSU H. REMARKS...SYSTEM IS STILL CHARACTERIZED BY PERSISTENT DEEP CONVECTION WITH CLOUD TOP TEMPS COLDER THAN -90C. SYSTEM STILL UNDERGOING NOTABLE SHEAR WITH TIGHT CLOUD TOP TEMPERATURE GRADIENT OVER EASTERN PORTION OF CONVECTION WITH LOW LEVEL CENTER JUST EAST OF THERE. 91W IS DEFINED BY LOOSELY DEFINED CLOUD LINES LESS THAN 75NM FROM COLD OVERCAST THAT IS MORE THAN 90NM WIDE FOR DT=1.5. MET AND PT=1.5. FT IS BASED ON DT. I. ADDL POSITIONS 12/1052Z 10.3N 109.7E AMSU ...RUMINSKI