TXNT25 KNES 140005 TCSNTL A. 08L (HELENE) B. 13/2345Z C. 27.0N D. 36.9W E. THREE/GOES-E F. EXTRATROPICAL G. IR/EIR/SWIR H. REMARKS...SYSTEM IS UNDERGOING EXTRATROPICAL TRANSITION AS EVIDENCED BY ACCELERATION AND THE LOSS OF MORE THAN 1/2 OF THE ACTIVE DEEP CONVECTION POLEWARD OF THE CENTER OF CIRCULATION. THIS WILL BE THE FINAL BULLETIN. I. ADDL POSITIONS NIL ...TURK