HISTORICAL CASE · 1 JANUARY 2026 · RUMILLY, HAUTE-SAVOIE
Three bright lights rose in succession over Rumilly on New Year’s evening. The witness’s description of a flame-like shape is central to the case: the same detail that initially made the lights unfamiliar became part of GEIPAN’s identification.
What the witness recorded
The anonymised questionnaire places the observation between about 20:44 and 20:50 on 1 January 2026. From a home terrace, the observer and their partner saw three yellow points with red colouring. The main witness described ascending, apparently rapid movement and silence. One light went out and appeared to turn before disappearing. The witness used a Google Pixel 9 and supplied three clips; only the principal observer completed a formal questionnaire.
The account estimates a distant position and height relative to an airliner, but supplies no measured range. Those impressions cannot establish an object’s physical altitude or speed. The form’s millimetre comparison describes apparent angular size at arm’s length, not the dimensions of an object in the sky. Read the original questionnaire.
How GEIPAN explained the lights
The agency’s page, updated 3 March 2026, classifies the case A: sky lanterns. Its assessment connects the warm colour and changing brightness with a small flame, and the upward movement with heated air providing lift. It also refers to weak, variable wind at Annecy, around 20–25 kilometres away, and the New Year setting. The first light was obscured by trees after roughly forty seconds; the sequence as a whole lasted around six minutes.
The published identification does not establish who released the lanterns or a particular launch position. A nearby weather station provides environmental context, rather than a measurement of the wind at every point along their paths. UKPX reviewed the published summary and questionnaire; the linked original clips remain available through the agency’s document list and were not independently analysed here.
Reading the case alongside its conclusion
Preserving the initial description allows readers to follow the route from an unfamiliar sight to an explanation. The useful comparison is between the observed light behaviour and the proposed mechanism, with estimated distances kept separate from measurements.
Location and source record
Rumilly commune reference; the private terrace and any lantern launch site are not identified. Geographical reference checked by UKPX.
UKPX reference added 6 November 2026. Incident year: 2026. This is retrospective library reporting. Read the original case source · Browse Historical Cases.