Castro Valley, CA, USA
circular UFO( bell hat shape ) seen on hwy 580 castro valley, CA 8:10 pm in front of full moon.
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: 4s (an atypical range)
- Moderate witness text (95 characters)
- Location geocoded exactly
- No other reports from this city within 3 days
- When
- 2008-02-22
- Where
- Castro Valley, CA, USA
- Shape
- Disk
- Duration
- 4 seconds
- Geo
- 37.694, -122.086 · exact
- Slug
- disk-over-castro-valley-ca-2008-a5e71b
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
- Castro Valley, CA shows up 32 times across the archive.
- 709 reports came from California in 2008.
- In the 2000s, 6.5% of reports described a disk — the all-time rate is 5.9%.
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.