The heat wave will gradually end on Monday in the country, and a new stormy wave will arrive in the evening on the Atlantic coast, forecasts Météo France, which has placed 10 departments on orange storm vigilance.
The heat wave will gradually end on Monday in the country, and a new stormy wave will arrive in the evening on the Atlantic coast, forecasts Météo France, which has placed 10 departments on orange storm vigilance. In total, 21 departments are affected by orange vigilance. Eleven in the center-east are maintained at orange level for a heat wave (Jura, Saône-et-Loire, Allier, Puy-de-Dôme, Cantal, Haute-Loire, Loire, Rhône, Ain, Isère, Drôme), according to the bulletin of the weather service released Monday morning. Ten are placed on orange vigilance for thunderstorms (Charente, Corrèze, Creuse, Dordogne, Gers, Gironde, Lot, Lot-et-Garonne, Tarn-et-Garonne and Haute-Vienne). Strong thunderstorms broke out overnight from Sunday to Monday on an axis going from the Paris basin to the Yonne and as far as the Ardennes, accompanied by intense rains, heavy hailstorms and sometimes strong gusts. Hailstones of 4 to 5 cm were observed in particular in Loiret and Seine-et-Marne. Very intense rainfall accumulations were recorded: 47 mm in 1 hour including 30 mm in less than 15 minutes in Vierzon, 60 mm in 30 minutes including 40 mm in 15 minutes in Lorris (Loiret).
To read : Heatwave: peaks at 42°/43°C in Aquitaine, absolute record in Biarritz
During the day, the weather is summery from the Massif Central to the Alps and Jura, to the Mediterranean and Corsica. On the South-West, maritime entries of low clouds cover the sky at daybreak, with a few drops on the Pyrenean foothills, then the sun will impose itself during the morning. On the North-East, a few showers persist in the early morning, then the clearings develop. On the North-West, the sky is loaded with a few small scattered showers. The clearings widen during the day, the sky is variable.
On the other hand, in Hauts-de-France in the morning, then in Normandy, Ile-de-France and Champagne-Ardennes in the afternoon, the weather was calm and sunny, in a slightly cooler atmosphere. In the evening, a new marked stormy degradation will be set up by the South-West. The storms will organize mainly on a South-West / North-East axis, strengthening during the evening of Monday and the night of Monday to Tuesday, shifting towards the north of the region. These storms may be accompanied by violent phenomena (of the same order of magnitude as Sunday’s storms, or even more locally). The very high temperatures of the past few days are easing, except in Lyonnais. The maximums are between 20 and 27 degrees north of the Loire, between 28 and 32 in Alsace, Bourgogne-Franche-Comté, the Centre, the South-West, PACA and Corsica. In Auvergne-Rhône-Alpes, the thermometer still shows 31 to 36 degrees.