TXNT21 KNES 310609 TCSNTL A. TROPICAL DISTURBANCE (97L) B. 31/0545Z C. 14.8N D. 59.9W E. FIVE/GOES-E F. T1.5/1.5/D0.5/24HRS G. IR/EIR/SWIR H. REMARKS...POSITION BASED ON CLOUD SYSTEM CENTER SINCE 0321Z GMI PASS WAS AMBIGUOUS AS TO THE EXISTENCE OF A CLOSED LOW LEVEL CIRCULATION. GREATER THAN .20 BANDING YIELDS A DT=1.0. MET AND PT=1.0. FT IS BASED ON CONSTRAINTS WHICH PREVENT LOWERING THE T NUMBER AT NIGHT DURING THE FIRST 24HRS OF DEVELOPMENT. I. ADDL POSITIONS NIL ...FISHER