Denver, CO, USA
Red and white blinking lights in a downward line formation. Traveled from east to west maybe 25 miles then disappeared.
Report quality: Moderate69/100
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: 240s, a plausible sighting length
- Moderate witness text (119 characters)
- Location geocoded exactly
- 2 other reports from the same city within 3 days
- When
- 2017-12-09
- Where
- Denver, CO, USA
- Shape
- Formation
- Duration
- 4 minutes
- Geo
- 39.739, -104.985 · exact
- Slug
- formation-over-denver-co-2017-19dbc9
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
3 reports came out of Denver, CO in December 2017 alone — a local cluster.
In context
- Denver, CO has 317 sightings on file here.
- 2017 brought 162 reports from Colorado.
- The 2010s skewed 3.5% formation reports; the archive-wide figure is 3.3%.
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.