FAUS23 KZME 281642 ZME3 CWA 281643 ZME CWA 301 VALID UNTIL 281658 FROM 5ESE FSM-75W LIT-50N TXK-50SSW FSM-40ENE MLC-35W FSM-5ESE FSM AREA SEV TS MOV FROM 25040KT. TOPS TO FL450 WITH MOD/HVY RAIN. POSS SEV INCLUDING TORNADO, LARGE HAIL AND OVR 50 KT SFC GUSTS. AR OK =