AnomalyThe witness is on a boat on the Oise River when, on August 16, 2014 at 9:55 PM and for 10 to 20 seconds, he observes a black flying object of rectangular shape with rounded corners. The object disappears behind the trees. The object moves silently in a straight line, from Cergy toward Pontoise, that is, from west to east. It is the beginning of night (sunset at 9:03 PM). The Meteociel data indicates a light west wind of 6 to 18 km/h (see weather). This observation can be explained by a child's balloon, inflated with helium, carried by the wind. These balloons come in many different shapes, some of which can look like rectangles from certain angles. GEIPAN does not have the means to confirm this hypothesis; the date of the observation (end of a summer weekend) is consistent with this hypothesis. GEIPAN classifies the case as "B": probable observation of a festive balloon.
Val-d'Oise, France · 2014-08-16 · from the GEIPAN archive
An account in Val-d'Oise, France
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This is an official case file of GEIPAN, the French space agency's unidentified aerospace phenomena office, machine translated from French. The original text and the full investigation file are at geipan.fr. We reproduce it with thanks and remove anything on request.