Unusual Contrail in Longueville

Summary

On March 5, 2015, a witness at Longueville station noticed a contrail with an unusual shape. The photograph captured a wavy and uncommon pattern, which drew the attention of the GEIPAN. Experts from Météo-France confirmed it was a contrail from an Airbus A319 on flight AF7614, disturbed by atmospheric turbulence. This phenomenon, though rare, is explained by unpredictable atmospheric conditions that affect the stability of contrails. The case was classified as "A," indicating a notable and unusual observation.

Clear-air turbulence is feared by pilots due to its invisible and potentially dangerous nature. In this case, the contrail showed wavy patterns rarely seen, making it an exceptional example for atmospheric studies. Although the scientific explanation is clear, the rarity of the phenomenon and its visual impact generated interest in the official report. The case includes data from FlightRadar and meteorological records from Melun, supporting the event description.