In addition to the Rhône, already on alert since Saturday August 12, Ain and Isère will go on heat wave orange alert this Sunday August 13. Météo-France is indeed forecasting significant heat in the Rhône-Alpes region. The mercury could also approach 36 ° C in Lyon in the afternoon. On Sunday, the temperatures should remain in the same order of magnitude, with in particular peaks of 35 ° C expected in Ain, Isère and Drôme, according to Météo-France. In question, a shift in the winds to the southwest which must continue to drain a mass of hot air of Spanish origin over the Rhône-Alpes region.
In addition, six departments of Auvergne-Rhône-Alpes will be placed in heat wave yellow vigilance and thirty others, located on a vast diagonal linking the Bas-Rhin to the Pyrénées-Atlantiques, in storm yellow vigilance.
The heatwave episode is not exceptional for the season, but it requires special vigilance, especially for sensitive or exposed people, adds the weather forecasting institute.
Elsewhere, showers will develop around midday, especially in Auvergne, then spread in the afternoon to Bourgogne-Franche-Comté, Lorraine and Alsace, sometimes taking on a stormy character. In the evening the storms will shift towards the Vosges, while a new small stormy salvo this time concerns Aquitaine, in particular the Basque Country.
Over a small northwestern half of the country, in a cooler air mass, the weather is calm and dry.
