CaseDiamond2007
Chicago, IL, USA
More Chicago UFO's
Report quality: Moderate58/100
This score reflects report-quality signals on file — how complete, corroborated, and precisely located the report is — not a claim about whether the sighting was a real craft.
- Duration parsed: 1800s, a plausible sighting length
- Brief witness text (18 characters)
- Location geocoded exactly
- 1 other report from the same city within 3 days
- When
- 2007-09-29
- Where
- Chicago, IL, USA
- Shape
- Diamond
- Duration
- 30 minutes
- Geo
- 41.850, -87.650 · exact
- Slug
- diamond-over-chicago-il-2007-c67157
Wave
Part of a wave
The Navy Encounters & the UAP Era
U.S. training ranges (Pacific off San Diego; Atlantic off Virginia), then worldwide reporting
The wave that renamed the subject. The USS Nimitz 'Tic Tac' encounter (November 2004: radar drops from 80,000 ft to sea level in seconds, pilot visual by Cmdr. David Fravor, FLIR video) stayed classified-adjacent until…
In context
- Chicago, IL shows up 413 times across the archive.
- 181 reports came from Illinois in 2007.
- In the 2000s, 1.6% of reports described a diamond — the all-time rate is 1.4%.
Nearby in space & time
within 30 daysReport
Full narrative lands with dossier import for famous cases, or the NUFORC free-text summary above for standard reports. This shell is SSR-ready: one D1 row (including connections_json) per page.