Thunderstorms hit France this Sunday: 15 Departments on Alert, here is what awaits us
Sunday 7th September 2025, a new storm front will develop in the southwest and will reach a good third of the country at the end of the day and at night. The forecasts.
A short summer break. After two beautiful warm and sunny days, the thunderstorms sign their big return to France on Sunday 7th September 2025. If they will not affect the whole country with the same intensity, they will be harbingers of one degraded weather ahead for everyone, especially next week.
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But it is especially in the southwest that they should strike first, as indicated in news.fr Yann Amice, meteorologist and founder of the site Weathernco. “This stormy degradation is in link with a depression which settles in the north-west of Ireland and which will cause altitude forcing on France (a phenomenon which acts like a vacuum cleaner and helps the hot and humid air from the ground to rise, which encourages the formation of storms, Editor’s note). ”
They should only appear that at the end of the day in Occitanie, the Massif Central, and shift during the night from Sunday to Monday around burgundy, and the eastern borders monday morning.
Around ten departments on yellow alert
For now, Meteo France placed 15 departments on yellow alert for storms, in its 6 a.m. bulletin, published this Sunday. These are:
- Ariège: storms
- Aude: storms
- Aveyron: storms
- Corrèze: storms
- Dordogne: storms
- Finistère: storms
- Haute-Garonne: storms
- Gers: storms
- Gironde: storms
- Lot: thunderstorms
- Lot-et-Garonne: storms
- Pyrénées-Atlantiques: storms
- Hautes-Pyrénées: storms
- Tarn: storms
- Tarn-et-Garonne: storms
Furthermore, other phenomena have been listed by Meteo France: floods and waves-submersion.
- Charente-Maritime: floods
- Morbihan: waves-submersion
- Finistère: waves-submersion
Waves in the west
In the rest of the country, the weather organization predicts clouds, or even some rain, in the west of the country, where “a clap of thunder is not excluded”.
“The cloudy front progresses towards the east during the day, which can still give a few showers over a western part of the country. Maritime entries cloud the skies around the Gulf of Lion.”
Meteo France
Potentially violent phenomena Monday and especially Wednesday
The stormy deterioration will especially be monitored in the east on Monday, with potentially violent phenomena, points out Yann Amice. “The storms will be well organized along a beautiful line of instability going from Toulouse to Dijon. ”
They are expected to evacuate from the east on Tuesday. But it will be necessary to monitor a new storm front in the south-east on Wednesday, due to a convective cluster (area of thick clouds which forms when hot and humid air rises quickly into the atmosphere, Editor’s note) which rises from Balearic Islands on Corsica and the Côte d’Azur.
The meteorologist does not rule out fairly violent phenomena in these areas: hail, strong gusts of wind, intense precipitation…
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