We intercepted a tornadic supercell in central Oklahoma near Dover, that produced a nice cone tornado. This became almost completely rain wrapped as it moved rapidly eastward. Due to the TIV and support crew blocking the road, we almost had a collision course with this tornado. We were very fortunate the tornado passed just to our south or else disaster could have happened. One of these days, chasers are going to die due to congestion, stupidity and irresponsibility.