Sioux City, IA, USA
An Air Force radar station near Sioux City, Iowa reportedly tracked an object at 50,000 to 80,000 feet, moving 1,200 to 1,800 mph, for about 30 seconds in January 1954.
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: 30s, a plausible sighting length
- Detailed witness text (168 characters)
- Location geocoded exactly
- No other reports from this city within 3 days
- When
- 1954-01-01
- Where
- Sioux City, IA, USA
- Shape
- Circle
- Duration
- 30 seconds
- Geo
- 42.500, -96.400 · exact
- Slug
- circle-over-sioux-city-ia-1954-d38b14
Part of a wave
The Great French Wave
France, spilling into Italy, Spain, and Latin America
The densest close-encounter wave ever recorded: landed domed objects on country roads, paralysis beams, and small suited occupants, reported by farmers and gendarmes across rural France at a rate of several per night.…
In context
- Sioux City, IA has 35 sightings on file here.
- 1954 brought 1 reports from Iowa.
- The 1950s skewed 10% circle reports; the archive-wide figure is 10.6%.
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.