TXIO23 KNES 130528 TCSNIO A. TROPICAL DISTURBANCE (91B) B. 13/0230Z C. 19.7N D. 91.5E E. THREE/MET-7 F. T1.5/1.5/D1.0/24HRS G. IR/EIR/VIS H. REMARKS...91B HAS EMERGED OVER OPEN WATERS OF THE NORTHERN BAY OF BENGAL. THERE IS A WELL DEFINED MID LEVEL CIRCULATION WITH COLD CONVECTIVE CLOUD TOPS WRAPPING AROUND APPARENT LLCC IN A PAIR OF LOCKING CURVED BANDS. 4 TENTHS BANDING WITH WHITE CLOUD TOPS GIVES DT=3.0. MET=1.5 AND PT=2.0. FT IS BASED ON CONSTRAINTS. I. ADDL POSITIONS NIL ...RUMINSKI