UFOMYST
CaseSphere2017

Sheffield, MA, USA

Circle object, Sheffield, MA, shifted gradually, but in what looked like controlled and precise movements. Dog barked.

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: 120s, a plausible sighting length
  • Moderate witness text (118 characters)
  • Location geocoded exactly
  • No other reports from this city within 3 days
When
2017-09-09
Where
Sheffield, MA, USA
Shape
Sphere
Duration
2 minutes
Geo
42.110, -73.355 · exact
Slug
sphere-over-sheffield-ma-2017-f5839d
Wave

Part of a wave

  • Historical wave2004

    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…

    Open wave →

In context

  • Sheffield, MA has 6 sightings on file here.
  • 2017 brought 100 reports from Massachusetts.
  • The 2010s skewed 7.1% sphere reports; the archive-wide figure is 6.5%.

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.