UFOMYST
CaseRectangle2010

Grayslake, IL, USA

Large black rectangular object moving silently towards the east horizon; no sound; no lights, but entered the atmosphere with a bright

Report quality: Moderate55/100

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: 300s, a plausible sighting length
  • Detailed witness text (134 characters)
  • Location geocoded exactly
  • No other reports from this city within 3 days
When
2010-09-25
Where
Grayslake, IL, USA
Shape
Rectangle
Duration
5 minutes
Geo
42.344, -88.042 · exact
Slug
rectangle-over-grayslake-il-2010-92ced4
Wave

Part of a wave

  • Historical wave2004

    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…

    Open wave →

In context

  • Grayslake, IL has 6 sightings on file here.
  • 2010 brought 208 reports from Illinois.
  • The 2010s skewed 1.7% rectangle reports; the archive-wide figure is 1.7%.

Report

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.