When I was up at Fort Reno, it was uncanny how ominous the sky to the NW was but then nothing as I glanced to the SW. Usually there's not such a dramatic cut off. At the south end of the cell, looking in the direction of Tysons, I saw a lowering and then an appendage coming out of it and I thought, oh, tail end Charlie, wall cloud and, yeah, that appendage is a FUNNEL CLOUD. Then I looked a little closer and realized the inner weenie had been given a bit too much leash.