TXPN24 KNES 280401 SIMWIR A. 04W (SONGDA) B. 28/0232Z C. 23.8N D. 124.3E E. ONE/MTSAT F. T5.5/5.5/D1.0/06HRS G. IR/EIR/VIS/SSMI/TMI H. REMARKS...CORE OF SONGDA HAS IMPROVED IN APPEARANCE FROM 6 HOURS PREVIOUS WITH CLOUD TOPS COOLING AROUND A SMALL CLOUD FILLED EYE. VIS IMAGERY INDICATES DUAL EYE STRUCTURE IN POSSIBLE EYE REPLACEMENT CYCLE. LATEST MICROWAVE IMAGERY SUPPORTS THIS..ALTHOUGH 2050Z SSMI AND 2341Z TRMM SHOWING WEAKNESS OR OPEN EYE WALL IN SOUTHERN SEMICIRCLE. BLACK SURROUNDING TEMPERATURE WITH LG EYE GIVES DT=5.5. PT AND DT AGREE. FT IS BASED ON DT. POSITION ACCURATE TO WITHIN 20 NM (37 KM). I. ADDL POSITIONS 27/2050Z 22.1N 123.6E SSMI 27/2341Z 22.9N 123.9E TMI ...RUMINSKI