Sioux Falls, SD, USA
Circle craft very high in the sky changing color. ((anonymous report))
Report quality: Moderate58/100
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: 1200s, a plausible sighting length
- Brief witness text (49 characters)
- Location geocoded exactly
- 1 other report from the same city within 3 days
- When
- 2018-08-29
- Where
- Sioux Falls, SD, USA
- Shape
- Circle
- Duration
- 20 minutes
- Geo
- 43.544, -96.728 · exact
- Slug
- circle-over-sioux-falls-sd-2018-ec2dc4
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
- One of 70 documented reports from Sioux Falls, SD in the UFOMYST archive.
- South Dakota logged 11 sightings in 2018.
- Circle sightings ran at 12.3% during the 2010s (archive average: 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.