WWPN20 KNES 301526 A. TROPICAL DISTURBANCE (91W) B. 30/1457Z C. 25.6N D. 135.5E E. FIVE/MTSAT F. TOO WEAK G. IR/EIR/MSI H. REMARKS...SYSTEM CAUGHT BETWEEN TWO UPPER LOW PRESSURE REGIONS WITH SPORADIC CONVECTIVE BURSTING.