Chicago, IL, USA
On Friday, September 11, at about 21:30 hours I observed, in the sky south of my home in Prospect Heights, Illinois, two very bright ob
Report quality: High73/100
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: 2400s, a plausible sighting length
- Detailed witness text (135 characters)
- Location geocoded exactly
- 3 other reports from the same city within 3 days
- When
- 2009-09-11
- Where
- Chicago, IL, USA
- Shape
- Changing
- Duration
- 40 minutes
- Geo
- 41.850, -87.650 · exact
- Slug
- changing-over-chicago-il-2009-c635bd
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…
Local cluster
This sighting is part of a small burst — 4 Chicago, IL reports filed in September 2009.
In context
- Chicago, IL shows up 413 times across the archive.
- 140 reports came from Illinois in 2009.
- In the 2000s, 2.8% of reports described a changing — the all-time rate is 2.5%.
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.