Are to be feared: Violent gusts of wind, hail and heavy accumulations of rain. UPDATED: The first storms are arriving on the Saône et Loire, but it’s just an aperitif!
If Saône et Loire was classified as yellow for storms this Friday, June 28, it will be on orange alert on Saturday, June 29, like the departments of the North East of France, including Nièvre, Yonne, and Côte-d’Or. For Saône et Loire, the switch to orange alert is at 4 p.m.
The first storm mass hit the Saône et Loire this Saturday at midday. But as we can see with the last update, it seems that the biggest storms will arrive from the Occitanie region and Spain, with storm masses which are already significant…
Qualification
Severely stormy summer situation which requires particular vigilance given the geographical extent and intensity of the forecast phenomena. In addition to intense electrical activity, these storms can cause violent gusts of wind, hail and heavy rainfall in a short time.
Expected evolution
Saturday afternoon, isolated thunderstorms are triggered towards Lorraine and Alsace.
A more generalized stormy deterioration then moves up from the south. It reaches the Bourgogne-Franche-Comté region around 6 p.m. then the Grand-Est region around 8 p.m. before continuing its progression towards the north.
These storms are particularly virulent. They are accompanied by violent gusts of wind (80 to 100 km/h, locally around 110 km/h possible), large hail and heavy accumulations of rain (40 mm in less than an hour and up to 80 mm over the entire episode).
This marked storm zone will gradually move out towards the north-east of Lorraine and Alsace after midnight.
Behind, still locally stormy rains remain until Sunday midday.
