I don't know, I was travelling, ironically west along I-40 through Oklahoma the day the fires broke out. My wife thought they were controlled burns along the interstate. I told her that controlled burns don't create their own cloud banks from horizon to horizon.
My memory may be faulty -- there were fires in the area last week which were put out. I think it was Coryell County, but at any rate it was somewhere in the Waco/Temple/Belton region.