(NWS/Des Moines) – After scattered non-severe showers and storms today, strong to severe thunderstorms are expected to cross the Missouri River into western Iowa around 9 or 10pm this evening and maintain themselves before weakening and/or exiting central Iowa during the early morning hours Saturday. Large hail (1-1.5″), damaging wind (60-70 mph), and a few tornadoes will be possible southwest.