UFOMYST
CaseChanging1989

Diamond Bar (on the 57), CA, USA

Very intense light moving and changing course rapidly causing cars to pull off highway and stop. All lights shot into sky getting small

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 (135 characters)
  • Location geocoded exactly
  • No other reports from this city within 3 days
When
1989-10-20
Where
Diamond Bar (on the 57), CA, USA
Shape
Changing
Duration
5 minutes
Geo
34.029, -117.810 · exact
Slug
changing-over-diamond-bar-on-the-57-ca-1989-f8d581
Wave

Part of a wave

  • Historical wave1989–1991

    The Belgian Triangle Wave

    Belgium (Eupen, Wallonia, Brussels corridor)

    The definitive black-triangle wave: silent, slow platforms with three corner lights, reported by gendarmes, air-traffic controllers, and thousands of citizens. On the night of March 30-31, 1990, Belgian F-16s scrambled…

    Open wave →

In context

  • One of 1 documented reports from Diamond Bar (on the 57), CA in the UFOMYST archive.
  • California logged 32 sightings in 1989.
  • Changing sightings ran at 1.9% during the 1980s (archive average: 2.5%).

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.