FAUS25 KZFW 252334 ZFW5 CWA 252334 ZFW CWA 501 VALID UNTIL 260000 FROM 20NNW CDS-30S CDS-30E LBB-40NE LBB-20NNW CDS AREA SEV TSRA. MOV FROM 24020KT TOPS TO FL480. LARGE HAIL POSS. OVR 50KT WIND GUST POSS. THIS IS ADDN INFO TO CONVECTIVE SIGMET 28C. TX =