The case record
What was reported?
Private pilot Kenneth Arnold reported nine bright objects moving rapidly in formation near Mount Rainier.
- Reported date
- 24 Jun 1947
- Witnesses
- Pilot · 1
- Investigation
- USAAF interest / press coverage
Evidence in the record
Eyewitness testimony
Competing explanations
Official and research context
No definitive official identification
Conventional explanations
Possible misidentification of distant aircraft, atmospheric effects or mirages
Arguments that remain contested
No conclusive reconstruction explains all details
Locations & timeline
Coordinates are representative. Area and route labels do not imply exact paths or object positions.
- Primary reference location
Airspace east of Mount Rainier during Arnold's flight
Mount Rainier / Mineral
Reported event location · Approximate area radius: 30 km
46.850°, -121.760° · route · Approximate
Record notes
Show an approximate flight-area polygon rather than a single exact point.
Imported starting record; individual claims and source links await editorial verification.
Original dataset status: Unresolved / disputed