Wow, check out that couplet on the storm to its west, looks like ~60kts gate to gate.....the warning now mentions storm spotters siting a funnel cloud with it. I would not at all be surprised if this thing puts down a tornado. Kind of odd looking cell too, almost too large to be supercellular.
EDIT: After analyzing that storm, there are now two localized areas of rotation, as if this giant mass is now two separate cells. The strongest circulation is with the northern half and the other down near the KS border.