MO AND FAR SW IA... ...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF THE MID-MO VALLEY...UPPER MS VALLEY...SRN PLAINS AND CNTRL PLAINS... TORNADO OUTBREAK LIKELY ACROSS THE SRN AND CNTRL PLAINS NWD INTO THE MID-MO VALLEY FROM SATURDAY AFTERNOON THROUGH SATURDAY NIGHT ...SRN AND CNTRL PLAINS... AN IMPRESSIVE UPPER-LEVEL