TXPN21 KNES 180403 SIMWIR A. 15W (CHOI-WAN) B. 18/0230Z C. 23.6N D. 138.8E E. ONE/MTSAT F. T6.0/6.0/W0.5/24HRS G. IR/EIR/VIS H. REMARKS...CHOI-WAN SHOWING SOME MODEST WEAKENING MAINLY DUE TO WARMING CLOUD TOP TEMPERATURES. SYSTEM REMAINS LARGE AND VERY SYMMETRIC WITH DOUBLE EYE STRUCTURE. DOUBLE EYE FEATURE EVIDENT IN VIS/IR AND TRMM MICROWAVE IMAGERY. DT=6.0 BASED ON DG EYE FOR INNER EYE FEATURE WITH 1.5 ADDITIONAL FOR BANDING WITH OUTER EYE. MET AND PT=6.0. FT BASED ON DT. I. ADDL POSITIONS NIL ...RUMINSKI