As per reports, between 1400 hours local time (1200 hours UTC) and 2000 hours local time (1800 hours UTC) on Saturday (18 July), Météo-France has placed Yonne Department under a yellow thunderstorm alert, with the warning primarily affecting the southern half of the department.

• Meteorological authorities forecast increasing atmospheric instability during the afternoon, with rainfall and thunderstorms expected to develop from Burgundy to Alsace, accompanied by the potential for locally hazardous weather conditions.
• Yellow thunderstorm alerts are also in effect across Cher, Côte-d’Or, Jura, Doubs, Haute-Marne, Meurthe-et-Moselle, Moselle, Nièvre, Bas-Rhin, Haut-Rhin, Haute-Saône, Saône-et-Loire, Vosges and Territoire de Belfort.
• Orange heatwave alerts remain in force across Alpes-Maritimes, Bouches-du-Rhône, Corse-du-Sud, Haute-Corse, Gard, Hérault and Var, where elevated temperatures continue despite cooler conditions in northern and eastern France.