South San Francisco, CA, USA
Blue and white circular ball falling to earth spotted in Northern California
Report quality: Moderate47/100
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: 3s (an atypical range)
- Moderate witness text (76 characters)
- Location geocoded exactly
- No other reports from this city within 3 days
- When
- 2021-10-18
- Where
- South San Francisco, CA, USA
- Shape
- Circle
- Duration
- 3 seconds
- Geo
- 37.655, -122.408 · exact
- Slug
- circle-over-south-san-francisco-ca-2021-4324b0
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
- South San Francisco, CA has 10 sightings on file here.
- 2021 brought 330 reports from California.
- The 2020s skewed 11.9% 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.