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🇺🇸 USAF — Project Blue Book

Unidentified Object Detected by Radar in 1951, Washington

Unidentified Object Detected by Radar in 1951, Washington
United States1 pages
PDF · official source

Summary

In August 1951, an air base in Washington detected an unidentified object using radar. The object was tracked for six minutes at an estimated speed of 950 miles per hour, prompting some alarm. Despite scrambling F-86 fighters, radar contact with the object was lost before the aircraft could take off. A later analysis suggested it might have been a balloon or radar interference, though no conclusive evidence was obtained.

The report, reviewed by electronic experts, concluded the phenomenon could be explained by interference or unusual weather conditions. However, the lack of precise data and the inability to identify the object kept the mystery around the incident. Although no conclusive proof was found, the case remains an example of how air defense systems dealt with unexplained reports during that era.