TXNT21 KNES 260028 TCSNTL A. 20L (TAMMY) B. 26/0000Z C. 28.7N D. 57.7W E. THREE/GOES-E F. T4.0/5.0 G. IR/EIR/SWIR H. REMARKS...CENTER IS EMBEDDED 1/3 DEG INTO A LARGE COLD OVC RESULTING IN A DT OF 3.5. EYE HAS DISAPPEARED LAST SVRL HR WITH DRY AIR ENTRAINMENT/SHEAR IMPACTING SYSTEM. LLCC STILL APPEARS SEPARATE FM FRONTAL ZONE JUST TO NW. VERY LARGE POLEWARD UPR-LVL OUTFLOW CHANNEL PRESENT. MET AND PT=4.0. FT BASED ON MET DUE TO IRREG/PULSING CONVECTION. I. ADDL POSITIONS NIL ...KONON