Niwot, CO, USA
Small white circle near the moon, very slowly moving north, then disappeared.
Report quality: Moderate61/100
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
- Moderate witness text (77 characters)
- Location geocoded exactly
- 1 other report from the same city within 3 days
- When
- 2021-06-15
- Where
- Niwot, CO, USA
- Shape
- Circle
- Duration
- 5 minutes
- Geo
- 40.104, -105.171 · exact
- Slug
- circle-over-niwot-co-2021-6a18ff
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
- Niwot, CO shows up 4 times across the archive.
- 119 reports came from Colorado in 2021.
- In the 2020s, 11.9% of reports described a circle — the all-time rate is 10.6%.
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.