Anticyclonic Rotating Funnel Anticyclonic striations clearly visible. This picture is roughly simultaneous with the tornado damage in Sunnyvale. These three remarkable images were shot from directly underneath the funnel shown above. Foreshortening has made the funnel itself appear like a dimple. Click on image to see full-sized version.
Rotation is characterized relative to the ground, as if one is looking down on the motion.
Since the images are shot looking at the vortex from below, at first glance it appears as if the vortex were rotating counterclockwise. The full-sized version shows flecks which, in my opinion, are chunks of debris whirling up and around the vortex. Click on image to see full-sized version. The last image here has more of a three dimensional look, with shadowing highlights. This is probably because at this point the funnel had extended downward considerably, and probably was at the stage of the last Anderson picture shown above.