Marin County, CA, USA
Multiple formations of bright glowing spheres seen near Mt. Tamalpais.
Report quality: Moderate51/100
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: 5400s, a plausible sighting length
- Moderate witness text (70 characters)
- Location geocoded exactly
- No other reports from this city within 3 days
- When
- 2018-10-24
- Where
- Marin County, CA, USA
- Shape
- Sphere
- Duration
- 90 minutes
- Geo
- 38.055, -122.749 · exact
- Slug
- sphere-over-marin-county-ca-2018-72ab4e
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
- This is one of 7 reports logged in Marin County, CA.
- This case is one of 331 California reports filed in 2018.
- Sphere craft made up 7.1% of 2010s reports, vs 6.5% across the whole archive.
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.