Thankfully there weren't any injuries or fatalities but production of 737 and the forward fuselage of the 787 may be severely impacted due to the power outage and damage caused by the storm.
Right now Spirit is telling employees not to report for work through Tuesday as they are still conducting damage assessments. Spirit is just one of a handful of Boeing 787 suppliers that have had very little issues with producing their work share of the 787. This could set Boeing back though if it does and by how much is still uncertain though Spirit is saying most of their capabilities are still intact. I don't know what they mean by capabilities.
From the photos that Spirit had posted on Flickr, the damage at least externally, looks to be pretty severe. I will try to follow this and report what impact, if any, these tornadoes have on 787 production.