More than 40 mm of rain fell in 1 hour causing flash floods in parts of southern Spain early on 25 August 2021. The previous day a storm in southeastern France dumped over 100 mm of rain in a short period causing floods in Var Department.

France
Météo-France said their rain gauges recorded 81.3 mm at Vauvenargues, near Bouches-du-Rhône on 24 August, which is nearly 3 times the average monthly total for the month of August on this station. As much as 58 mm fell in just in 1 hour.
Hail and high intensity rainfall totalling over 100 mm fell in the town of Pignans in Var Department, which was badly affected by flooding. The town was completely closed to traffic after streets were swamped with mud and flood water 30 cm deep, police said.
Over 100 firefighters were deployed to the area and carried out 110 interventions. A total of 22 families were relocated after homes were flooded. No injuries or casualties were reported, Pignans Mayor Fernand Brun said.
Elsewhere in France, floods and heavy rain damaged a hospital building in Salon-de-Provence in the Bouches-du-Rhône department but without causing injuries.
Spain
In Spain, flash flooding struck on 25 August after storms in southern parts of the country brought a short period of heavy rainfall in the early hours.
Flash floods swept through Burunchel and nearby areas in Jaén Province, Andalusia. Cars were were wrecked and houses flooded. Roads were buried in mud and flood debris. No injuries were reported however. Authorities reported several roads were closed to traffic on 25 August.
Cazorla in the province of Jaén, Andalusia recorded 45 mm of rain in 1 hour.

Social Media
📌 RECUERDA‼ en vigor aviso amarillo por tormentas 🌩 en #Jaén, #Granada y #Almería hasta las 19:00 horas.
▶ NUNCA aparques tu coche en cauces secos o zonas próximas que puedan ser arrastrados por la corriente.
📸 Daños en vehículos en Jaén, @HoraJaen pic.twitter.com/xfdgx7LvPr
— Emergencias 112 (@E112Andalucia) August 25, 2021
🌧️La goutte froide centrée sur le sud de la France a favorisé cet après-midi le développement de foyers orageux entre #Alpes et #CôtedAzur.
📊Cumuls parfois très conséquents :
Vauvenargues (13) 81.3mm
Rians (13) 53.2mm
Trets (83) 52.2mm📽️Salon de Provence via Michel Roux pic.twitter.com/Tu2bmQisIA
— Météo-France (@meteofrance) August 24, 2021
Des pluies très intenses se produisent sous #orages en région #PACA. À Vauvenargues (Bouches-du-Rhône), il est tombé 78 mm dont 59 mm en une heure, soit l’équivalent de 2 mois de pluie à cette époque de l’année. Il s’agit d’un record de précipitations en 24 h depuis 1990. ⚡💦⚡ pic.twitter.com/SVvBRhZPt1
— La Chaîne Météo (@lachainemeteo) August 24, 2021