From Meteo France:
Moderate thunderstorm warning
Soyez attentif si vous pratiquez des activités sensibles aux risques météorologiques ou à proximité d'un rivage ou d'un cours d'eau. Des phénomènes habituels dans la région mais occasionnellement et localement dangereux (exemple : mistral, orage d'été, montée des eaux, fortes vagues submergeant le littoral) sont en effet prévus. Tenez-vous au courant de l'évolution de la situation.
Be cautious if you engage in activities sensitive to weather risks or near a shoreline or watercourse. Phenomena common in the region but occasionally and locally hazardous (e.g., mistral winds, summer storms, rising waters, strong waves submerging the coast) are expected. Stay informed about the situation's developments.
It seems to be a general warning for most of the country though, and the local weather forecast looks normal.
But with the change of wind direction, it's probably better to start early, like Ineos.
Which forecast is correct? Compare forecasts of all weather models for Nevers. See the uncertainties for temperature, sunshine, rain, and wind.
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