A victim of the A1O higtway waits on cots at the Palais des Sports of Orleans on June 1, 2016 after torrential downpours brought cars to a standstill. The Loiret department is under red flood alert and France's weather agency Meteo France maintained today 18 departments under the orange alert. / AFP PHOTO / GUILLAUME SOUVANTGUILLAUME SOUVANT/AFP/Getty Images

Victims of the A1O higtway wait on cots at the Palais des Sports of Orleans on June 1, 2016 after torrential downpours brought cars to a standstill. The Loiret department is under red flood alert and France's weather agency Meteo France maintained today 18 departments under the orange alert. / AFP PHOTO / GUILLAUME SOUVANTGUILLAUME SOUVANT/AFP/Getty Images

Victims of the A1O higtway wait on cots at the Palais des Sports of Orleans on June 1, 2016 after torrential downpours brought cars to a standstill. The Loiret department is under red flood alert and France's weather agency Meteo France maintained today 18 departments under the orange alert. / AFP PHOTO / GUILLAUME SOUVANTGUILLAUME SOUVANT/AFP/Getty Images

This picture taken on May 31, 2016, shows the entrance of the prison of Saran after heavy rainfalls partly flooded the prison. Some inmates were evacuated to other institutions as the Loiret department is under flood alert and France's weather agency Meteo France maintained on Tuesday 18 departments under orange alert. / AFP PHOTO / GUILLAUME SOUVANTGUILLAUME SOUVANT/AFP/Getty Images

A man takes a photograph on May 31, 2016 in Saran, on a bridge over the A10 highway, flooded due to heavy rainfall. The Loiret department is under red flood alert and France's weather agency Meteo France maintained today 18 departments are under orange alert. / AFP PHOTO / GUILLAUME SOUVANTGUILLAUME SOUVANT/AFP/Getty Images

Members of French gendarmerie monitoring and intervention platoons ("pelotons de surveillance et d'intervention de la Gendarmerie", PSIG) leave the prison in convoy on May 31, 2016 in Saran, after heavy rainfalls partly flooded the prison. Some inmates were evacuated to other institutions as the Loiret department is under flood alert and France's weather agency Meteo France maintained on Tuesday 18 departments under orange alert. / AFP PHOTO / GUILLAUME SOUVANTGUILLAUME SOUVANT/AFP/Getty Images

This picture taken on May 31, 2016, shows the entrance of the prison of Saran after heavy rainfalls partly flooded the prison. Some inmates were evacuated to other institutions as the Loiret department is under flood alert and France's weather agency Meteo France maintained on Tuesday 18 departments under orange alert. / AFP PHOTO / GUILLAUME SOUVANTGUILLAUME SOUVANT/AFP/Getty Images

This photo taken on May 31, 2016 next to the entrance of the A10 highway in Saran shows a traffic sign reading "A10 to Orleans, Route flooded, slow down." The Loiret department is under red flood alert and France's weather agency Meteo France maintained today 18 departments are under orange alert. / AFP PHOTO / GUILLAUME SOUVANTGUILLAUME SOUVANT/AFP/Getty Images