Par
Julien Sournies
Published on
After the heat wave, make way for thunderstorms. As of this Tuesday, August 19, 2025, of sometimes violent storms will strike Grenoble and Isère, according to the latest data provided by Météo-France. In this regard, the Isérois department has been placed in Yellow vigilance to thunderstorms For Tuesday, 9 a.m. to 10 p.m.
Thunderstorms will strengthen in the afternoon
Announced for the afternoon, thunderstorms could appear sooner than expected In the Isère department on Tuesday. “From the start of the day, the sky quickly takes care of unstable clouds which can already let go of some punctually stormy showers,” says Météo Center-Isère in its weather bulletin.
The afternoon remains very cloudy with localized thunderstorms, then a more frank and more generalized degradation is expected in the evening with thunderstorms that will strengthen.
For his part, Keraunos, French observatory of tornadoes and thunderstorms, confirms that “thunderstorms will multiply during a large south-eastern quarter of the country”, which “will be” will be sometimes strong Between Occitanie, Auvergne and Alps ”.
According to Météo-France, “strong” thunderstorms should strike the South of Isèrein particular the sectors of Grenoble, Villard-de-Lans and La Mure. The rest of the territory should be affected by thunderstorms.
Thunderstorms will move to the North-Isère
Météo-France also provides thunderstorms in Isère on Wednesday August 20, which should once again appear in the south of the department in the afternoon.
But the latter should also rage in North-Isère, namely the Villefontaine, Roussillon, Vienne and La-Côte-André sectors. Still according to the official meteorology department in France, the rumbles should stop during the night, before giving way to showers on Thursday.
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