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🇺🇸 USAF — Project Blue Book

Two stationary white objects over Riverside

Two stationary white objects over Riverside
United States5 pages
PDF · official source

Summary

In December 1957, a witness in Riverside, California, observed two white objects the size of a pea directly overhead. The objects remained stationary for four minutes, one above the other, without moving. Although the possibility of a balloon was considered, the lack of wind direction data made a proper evaluation difficult. The responsible officer agreed it could have been a weather balloon, but other possibilities were not ruled out.

The official report, though brief, includes details such as the exact location and visual description of the event. Despite no photos or additional data being recorded, the civilian testimony was considered sufficient to classify the case as "possibly a balloon." Cases like this, while seemingly simple, are valuable for understanding how UFO sightings were analyzed in the 1950s.