At the end of the afternoon, thunderstorms form in the south of the Saône valley and rise quickly in the evening in the east of the Saône-et-Loire, the Jura and then the Doubs. The stormy episode is quite brief but potentially violent. It comes with:
– strong electrical activity
– hailstorms
– intense rain (10 to 20 mm in a short time)
– gusts around 100 km/h, locally more.
There is still uncertainty about the trajectory of the strongest storms: the bordering departments (21, 70, 90, 68) may be marginally affected.