Heavy rain forecast for southern France

Up to 250mm of rain is possible locally in southern France as a Mediterranean weather episode is expected to bring heavy precipitation to the region this week. The event is anticipated to begin along the Mediterranean coasts starting from Tuesday night to Wednesday, November 4, following a sunny start to the week in the south of the country.

Mediterranean episode explained

The phenomenon, known as a Mediterranean episode, involves very heavy precipitation over a short period, sometimes equivalent to several months of rain in a few hours or days. The departments of Aude, Hérault, and Gard are expected to experience the heaviest rainfall, with the west of the Bouches-du-Rhône, particularly the coastal area, also likely to be affected.

Weather alerts and regional impact

Météo France indicates that the Languedoc region will be the main area impacted, with potential spillover into Auvergne and Limousin. In some places, more than 200 to 250mm of rain could fall. An orange alert is likely in several departments. Uncertainty remains regarding the position and intensity of the heavy rains, which could also extend to the west of the Provence-Alpes-Côte d'Azur region.

Extended weather conditions and risks

The Mediterranean episode is expected to last until late Thursday and may be associated with "locally sustained thunderstorms." On Thursday, Météto France anticipates an intensification of rains along the Gulf of Lion coastline. An easterly wind blowing near the Mediterranean coasts starting Wednesday is expected to continue on Thursday. The risk of flooding, landslides, mudflows, and debris flows is highlighted due to the heavy rains.

Recent weather history and regional contrast

The southeast of the territory is still recovering from violent weather that occurred on October 19 and 20, during which three people died in the Bouches-du-Rhône and another in Haute-Corse. In the Var, the body of a man carried away by the waters remains missing. Mediterranean episodes are linked to warm, humid, and unstable air rising from the Mediterranean, which can generate stationary violent thunderstorms. This summer, the Mediterranean reached record surface temperatures. During the current episode, the weather in the Southwest and the northern half of the country will remain dry and generally sunny, exacerbating the existing drought.