Case file · Official inquiry

Lakenheath–Bentwaters radar incident

Radar operators at two US-run RAF bases tracked fast targets for hours, and an RAF Venom fighter said a target got behind it.

1956 CE · 52.41, 0.56 · status: unexplained

The account

On the night of 13–14 August 1956 Bentwaters radar tracked targets at thousands of miles per hour while a fast white light was seen from the ground; later Lakenheath controllers watched targets stop dead and change direction, and an RAF Venom pilot reported contact before the target circled behind him. The Condon Report, sceptical elsewhere, concluded the chance that 'at least one genuine UFO was involved appears to be fairly high'.

The sceptical view

Others argue the night combined anomalous radar propagation, Perseid meteors and Mars, and that the witness accounts were assembled years later.

The researched reading

A long night of multi-radar and visual reports at two air bases. Radar propagation, meteors and Mars can explain parts, but not convincingly all of it, so a real unknown keeps a substantial share.

Explanation	Weight	Why
Genuinely anomalous	32%	Several ground radars at two bases, an airborne radar lock-on, and ground and air visual sightings over hours make this one of the strongest radar-visual cases; the Condon Report judged the chance of a genuine UFO "fairly high".
A known natural phenomenon	30%	Radar meteorologist David Atlas argued that thin atmospheric layers can produce moving, stopping echoes like those reported; summer night-time inversions over East Anglia commonly favour anomalous propagation.
Something known, misidentified	18%	The Perseid meteor shower peaked that week and Mars was bright, matching some visual reports; the Venom’s target could have been another aircraft or ground return.
A poorly understood natural phenomenon	8%	Poorly understood atmospheric echo sources and luminous phenomena could contribute.
Secret human technology	7%	US or Soviet test vehicles are possible but no matching programme has been identified.
Perception, memory or mind	4%	Key details come from accounts assembled years later, and a British re-examination found the events more confused than the Condon summary.
A hoax or fabrication	1%	Contemporary teletype records exist.

Official position: Project Blue Book filed it as probable anomalous propagation; the Condon Report left it unexplained and judged a genuine UFO fairly likely.

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Sources

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