White ball seen over Aberdeen, Washington

Summary

A balloon-shaped object, the size of a medicine ball, was observed floating south over Aberdeen, Washington, on July 22, 1955. Civilian and military witnesses reported the object bobbing in an irregular manner. The sighting lasted about one minute, with no photographs or radar involved. Despite initial uncertainty, investigators concluded it was likely a balloon, given the presence of multiple balloon launch sites in the area.

The object's description and movement, along with the geographical context, point to a conventional explanation. However, the fact that it was reported as an unidentified phenomenon and classified under Project 10073 suggests that unusual possibilities were not immediately ruled out. Ultimately, the case was considered insufficient for further investigation and was filed as likely a balloon.