Here is a closeup of the two tornadic thunderstorms. The prominent hook echo (signature of a tornado) is circled.
I have zoomed out to give you an overall view of tornado paths across northwest Iowa this evening. The two longer arrows bound the primary tornado paths. The shorter arrow (associated with the hook) has only produced tornado(s) in the last half-hour or so. This is an extremely dangerous situation because it is dark. We do not know the full extent of the damage.