Inspired by PenquinOpus' original post, I took a subset of frames from the Oct 1, 2004 video and spliced them into a new timeline animation. (source: WebCam)

Ultimately it would be great to have these as textures on a polygon, instead of a screenoverlay.

Finally found the famous 1980 photos by Gary Rosenquist: USGS site

3D cloud: post