Groveport, OhioAugust 1948

On Sunday, August 1, 1948, at about 2:00 p.m., a student was driving east on Groveport Pike near Groveport, Ohio, when he noticed something unusual in the sky. He saw what looked like a small black cloud nestled between two white clouds. This caught his attention because the weather was clear, with only a few white clouds visible and no other dark formations.

The black cloud did not have a clear shape, but it resembled the smoke from an anti-aircraft shell just after it explodes. Without warning, it suddenly stretched out into a wide streak with smaller vertical streaks running through it. The formation then twisted and turned, changed direction, and disappeared. Within three or four seconds, a similar smoke burst appeared again about 20 degrees to the west of where he first spotted it. This new pattern was dark, large, and dispersed quickly. It reappeared as a wide streak roughly a mile long, twisting back and forth from wide to narrow and changing direction as it moved westward against a light wind. The observer heard no sound and saw no actual object, only the streaky patterns in the sky. He estimated the phenomenon was very high and far away. Drawing on his military experience, he said he had seen many anti-aircraft shell bursts and plane exhaust trails in the war, but nothing like this. He described it as spontaneous, like a rubber band suddenly stretching, twisting, and vanishing without a trace.

The observer's wife, who was traveling with him, witnessed the same event and provided a substantially identical account to Air Force investigators. She contacted the Ohio State Journal shortly after arriving home, and the newspaper subsequently published her statement.

An Air Force investigator noted in the case file that the origin of the observed object remained uncertain, though it was "entirely possible that it was parts of the aurora trail of a fireball." The investigator acknowledged that auroras have been known to behave in the manner described by the witness. However, the witness stated that the streaks did not resemble an anti-aircraft shell burst or typical plane exhaust trails, suggesting the formation occurred very rapidly over considerable distance.

The full case file, comprising seven pages as held by the National Archives, is reproduced below.