Storm Herminia triggered the worst flooding in four decades in parts of northwest France and created dangerous avalanche conditions in the Alps.
In Brittany, hundreds of people were evacuated from their homes in the department of Ile-et-Vilaine, including the city of Rennes. Further south in Guichen, the Vilaine River rose to a record level, according to Mayor Dominique Delamarre. The flooding disrupted transport and cut power to more than 2,300 homes.
Meteo France issued red alerts for three departments in Brittany, warning people to stay away from rivers, low-lying areas and bridges after back-to-back storms