On an arc going from Aude to Var, including Tarn and Aveyron, the storms which started Tuesday followingnoon will move from east to west during the night. In Hérault and Gard on Tuesday evening, “the rain intensities will be very high, possibly reaching 80 mm in a very short time” and “we can locally exceed 100 to 130 mm under stationary storms”, specified Météo-France.
On the Southwest this Tuesday
From the beginning of the morning, locally stormy showers will circulate in Brittany, and on the Atlantic coast, going up from the Basque coasts towards the Vendée. They will gradually reach all of New Aquitaine, Pays de la Loire, Centre-Val de Loire and Normandy.
Meteo France
The stormy deterioration set in over the south-west of the country during the morning. In the followingnoon, clearings will return by the coastal departments.
It should also be noted that locally strong thunderstorms may break out in the evening and first part of the night from Tuesday to Wednesday over a good part of the south-west, placed in yellow vigilance. Local accumulations of 20 to 40 mm are expected in less than an hour. Wind gusts around 80 to 100 km/h may occur. These thunderstorms are expected to subside in the evening.
Languedoc under threat
The storms will become more violent in the late followingnoon and evening when they reach the south of the Massif Central between Aude and Aveyron. These storms will be accompanied by strong electrical activity, hailstorms and heavy accumulations of precipitation. Local accumulations of 20 to 50 mm are expected in less than an hour. Gusts of wind around 70 to 90 km/h may occur. These thunderstorms are expected to subside overnight.
On the Languedoc side, the storms will win this evening towards Hérault and Gard. The rainfall intensities will be very high, reaching 80 mm in a very short time, we can locally exceed 100 to 130 mm under stationary storms. The storms will be accompanied by violent phenomena, locally strong gusts of wind, hail and marked electrical activity.
Eddy phenomena, waterspouts or even tornadoes might also occur.
Finally, note that the departments in yellow vigilance are not immune to strong thunderstorms locally, in particular for this late followingnoon, evening and night.
Disturbed this Wednesday
In the second part of the night, these violent storms will shift towards the lower Rhône valley then reach the Var tomorrow morning where they can still be associated with strong gusts of wind and vortex phenomena.
Then, during the day tomorrow, following a few hours of calm, a new episode of heavy storms will set in from Languedoc to Provence, it might extend a little further north and a little further east. than the previous one.
The weather will also be variable in the west. A few stormy showers will spread towards the Ile de France and the Hauts-de-France.