Clamart 2015, three shiny objects in the sky

Summary

On June 6, 2015, a witness in Clamart observed three small shiny objects moving from northwest to southeast before suddenly rising vertically and disappearing. The description and initial behavior of the objects suggested a possible non-conventional explanation. However, after analyzing the weather conditions of the day, it was found that the movement of the objects matched the wind direction. The objects were likely small party balloons, their silver color caused by sunlight reflection. Their sudden disappearance was attributed to the balloons bursting at a certain altitude. The GEIPAN classified this case as "B", indicating a likely conventional observation.