Fire Dragon
Pennsylvania, on July 29, 2003

Here's two images from Eastern Pennsylvania. The first one at about 5:30 PM and the other at about 7:30 PM. These were both taken on July 29.
Doug
 
Here is another that looks similar, but much larger, to photos from Alberta on July 18, when separated from the Sun by the angle of the viewer, due to latitude or time of day. Note it operates independently of the Sun. The Fire Dragon, with streaming tail of red dust, coming closer and getting larger.
Nancy