At least 19 people have been killed after heavy rains triggered flash floods in the mountains above France's southern Cote d'Azur region.
A local official said that people are still missing as 180mm of rain fell within 12 hours.
The rains caused water levels to rise swiftly by several metres, preventing many people from fleeing to higher ground and forcing some to seek shelter on the roofs of their homes.
Rescue workers concentrated on helping hundreds of people trapped in their vehicles, houses or on rooftops overnight.
Helicopters have already been used to airlift some people to safety.
There were deaths in the towns of Arcs, Draguignan, Luc, Muy and Roquebrune-sur-Argens.
Emergency services had to let the body of a woman float away yesterday because the currents were too strong to attempt a recovery.
Such was the extent of the flooding that empty vehicles were floating down the street.
The rising water also trapped a high-speed train travelling from the southern city of Nice to Lille in the north at Luc with 300 passengers on board.
Up to 200,000 homes in the region were without electricity.