Declassified UFO / UAP Document
UFOB Index Card and Project 10073 Record Card — Riverside, California, December 1957
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AI-Generated Summary
A civilian reported two stationary, white, pea-sized objects over Glenhaven, California, on December 2, 1957. Military investigators concluded the sighting was possibly a weather balloon but lacked sufficient data for a definitive evaluation.
This document consists of a collection of records regarding a UFO sighting that occurred on December 2, 1957, near Glenhaven, eight miles west of Riverside, California. A civilian witness reported observing two white, pea-sized objects positioned one above the other directly overhead. The objects remained stationary for a duration of four minutes. The report was processed by the 751st ACW RON at Mt. Laguna, California, and forwarded to the Air Technical Intelligence Center. The reporting officer, 1/Lt. John L. Obourn, noted that the description was consistent with a weather balloon. However, the official evaluation concluded that there was insufficient data to confirm this identification, specifically citing a lack of wind information required to properly assess the objects' behavior. The documentation includes a UFOB Index Card, a Project 10073 Record Card, and the original teletype message (UNCLAS 751ST 1056-K) detailing the sighting parameters, including the time of 2208Z and the clear weather conditions at the time of the observation.
The description fits a weather balloon, but without the winds info, cannot properly evaluate the information given. However, it is possibly a balloon.
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Official Assessment
The description fits a weather balloon, but without the winds info, cannot properly evaluate the information given. However, it is possibly a balloon.
The sighting involved two stationary, white, pea-sized objects observed for four minutes. The reporting officer concluded it was possibly a balloon, though official records noted insufficient data for a definitive evaluation due to a lack of wind information.
Witnesses
Key Persons
- John L. ObournReporting Officer