Overview

• An intense Mediterranean storm on 21–22 September triggered flash floods in the south-east, with extreme local totals including a 24-hour record of 148.5 mm at Le Castellet and around 90–113 mm in an hour in Toulon.
• Marseille, Aix-en-Provence, Avignon and Cassis saw rapid urban flooding, with the Vieux-Port inundated and drainage systems overwhelmed.
• Transport was heavily disrupted as about a dozen Marseille-Provence flights were diverted, TER services in the Vaucluse were halted, and in Toulon the road tunnel and train station were closed and hospital access was briefly cut.
• Power outages peaked at roughly 50,000 customers in the Var and about 10,000 in Vaucluse and Bouches-du-Rhône, while firefighters logged more than 250 interventions in Bouches-du-Rhône and 165 in the Var.
• In Brittany, Côtes-d’Armor recorded severe flooding with a 55-year-old found dead in her car in Ploumagoar, widespread road and coastal damage including an esplanade collapse, and 400-plus emergency interventions as municipalities seek catastrophe recognition.