An intense storm episode in the Rhône Valley, France, on 09 August 2018 dumped over 100 mm of rain in 1 hour, causing rivers to overflow. As many as 1,600 people were evacuated. One man has been reported missing in the floods.
France’s Ministry of Interior said the storm caused a sudden flood of tributaries of the Rhône and Ardèche rivers. Ardèche, Gard and Drôme departments were all affected.
In a statement of 09 August, the Ministry said that a team of 400 Gendarmerie, firefighters, police and civil security, as well as 4 helicopters, were mobilized and sent to affected areas.
As many as 1,600 people, mainly campers, were evacuated as a precaution in Ardèche, Gard and Drôme departments. Some houses on the banks of the Cèze river in Goudargues were also evacuated.
The evacuated campers included 119 children from a campsite in Saint-Julien-de-Peyrolas, Gard department, where Ardèche river burst its banks. Four of the children were transported to a hospital in Bagnols sur Cèze and treated for hypothermia. A man who was helping supervise the children’s summer camp is still missing.
Rivers and Rainfall
Meteo France had warned of heavy rainfall in the region for 09 August, with up to 200 mm of rainfall forecast.
In the event, by 17:00 on 09 August, 240 mm of rain had fallen in Saint-Martin-d’Ardèche, according to Meteo France figures, with 105 mm of that total falling in just 1 hour. Vallon-Pont-d’Arc, also in Ardèche, recorded 201 mm during the same period.
In Gard department, Méjannes-le-Clap recorded 167 mm and Bessèges, situated on the Cèze river, recorded 150 mm.
#Orages #Intempéries Le préfet du Gard salue l’efficacité et le professionnalisme de l’ensemble des acteurs engagés ce jour pour porter assistance aux populations impactées par le violent épisode pluvio-orageux qui a traversé le nord du #Gard. pic.twitter.com/vjv9ihqxKu
— Préfet du Gard (@Prefet30) August 9, 2018
Je salue l’action remarquable de tous les #Pompiers pour leur dévouement, leur professionnalisme, j’associe tous les services administratifs et techniques du service départementale d’incendie et de secours. Grâce à eux, de nbses vies ont été sauvées. Cc @SDIS34 @sdis84 @SDIS13 pic.twitter.com/67VfcISS2f
— Alexandre PISSAS (@APissas) August 10, 2018
Dans les prochaines heures, des #orages violents se déplacent entre l'Auvergne et le Nord-Est, accompagnés de grêle, rafales de vent de 80 à 120km/h. L'épisode méditerranéen va se décaler sur la région PACA dans l'après-midi ▶️https://t.co/KA0Ij27Eea pic.twitter.com/y6W8EET3ut
— VigiMétéoFrance (@VigiMeteoFrance) August 9, 2018
— Loïc Spadafora (@loicspadafora) August 9, 2018
Les #orages stationnaires du sud de la #France accompagnés de fortes #précipitations donnent lieux à des #inondations comme sur cette vidéo à #Pierrelatte dans la #Drôme. Vidéo via https://t.co/6YmShjHazU pic.twitter.com/LYKWFw8hEi
— Keraunos (@KeraunosObs) August 9, 2018
B - Goudargues
Saint-Martin-d’Ardèche, Ardèche - August 9 to August 9, 2018
All figures according to Meteo France figures for rainfall 00:00 to 17:00 on 09 August. 105 mm fell in 1 hour in Saint-Martin-d’Ardèche.
Vallon-Pont-d’Arc, Ardèche - August 9 to August 9, 2018
Méjannes-le-Clap, Gard - August 9 to August 9, 2018
Bessèges, Gard - August 9 to August 9, 2018
Ardèche river, Saint-Julien-de-Peyrolas, Ardèche - August 9 to August 10, 2018
Note: News reports say the Ardèche, Cèze and tributaries of the Rhône all overflowed. Vigicrues (France's river level monitoring agency) figures showed no reports of levels exceeded flood stages.
August 9 to August 11, 2018
Mainly campers in Ardèche, Gard and Drôme departments. Some houses in Goudargues also evacuated
Saint-Julien-de-Peyrolas - August 9 to August 10, 2018