WWIO21 KNES 092118 A. TROPICAL DISTURBANCE (91S) B. 09/2030Z C. 12.5S D. 100.0E E. FIVE/MTSAT F. T1.0/1.0/D1.0/24HRS G. IR/EIR H. REMARKS..DT=1.0 BASED ON .2 BANDING ON LOG10 SPIRAL. PT=1.0. MET=1.0. POSITION DIFFICULT IN IR IMAGERY. 1924Z AMSUB NEAR 12.5S 99.8E.