'Official UFO Night', Brazil
On 19 May 1986 Brazilian radars tracked about 21 unknown targets and the Air Force scrambled F-5 and Mirage interceptors over four states.
1986 CE · -23.22, -45.89 · status: unexplained
The account
Lights were first seen around 8:15 p.m. by a controller at São José dos Campos airport; Embraer founder Ozires Silva, flying in a Xingu, reported red lights near the coast. Air bases at Santa Cruz and Anápolis went on alert and sent up three F-5Es and three Mirage IIIEs; pilots reported radar contacts and lights that climbed away or vanished, and one contact seemed to zigzag at high speed. In total 21 radar plots were logged; the case is known in Brazil as the Noite Oficial dos OVNIs.
The sceptical view
No agreed conventional explanation has been published; radar artefacts and bright stars or planets are the usual suspects in night-time radar–visual cases.
The researched reading
A rare case with radar, jets and an official admission. Radar ducting and pilots chasing distant lights may explain much of it, but without the raw data a real unexplained share remains.
| Explanation | Weight | Why |
|---|---|---|
| Something known, misidentified | 32% | Pilots chasing lights at night often pursue bright stars and planets, and several pilots described lights that kept their distance, a signature of very distant objects. |
| Genuinely anomalous | 28% | Around 21 targets were tracked on several radars, jets were scrambled and pilots saw lights, and the Air Force report said the phenomena appeared solid and controlled; no full radar analysis has been published. |
| A known natural phenomenon | 20% | Autumn temperature inversions over south-east Brazil can produce anomalous radar returns at several sites at once, which could explain targets not seen visually. |
| A poorly understood natural phenomenon | 12% | Some Brazilian researchers have proposed atmospheric plasmas to explain radar-visual lights. |
| Secret human technology | 5% | Foreign or domestic test aircraft over four states for hours is unlikely. |
| Perception, memory or mind | 3% | Experienced radar operators and pilots were involved; perception alone does not explain radar. |
| A hoax or fabrication | 0% | Multiple radar stations and the Air Ministry rule out invention. |
Official position: The Brazilian Air Force publicly confirmed the radar tracks and scrambles; its declassified report said the objects could not be identified.
Connections in the atlas
- Haroldo Westendorff, Patos Lagoon
- VASP flight 169
- Air Force receives ufologists, Brasília
- Colares (Operação Prato)
- Varginha 'creature'