People are seen on a private beach following heavy rainfall in Nice, France October 3, 2020.

A man removes mud and debris from a street in Breil-sur-Roya as clean-up operations continue after storm Alex hit southern France, bringing record rainfall in places and causing heavy flooding that swept away roads and damaged homes, France, October 5, 2020.

A man is seen on a beach of the Promenade des Anglais following heavy rainfall in Nice, France October 3, 2020.

A view shows a road that collapsed into the Vesubie river, after heavy rainfall hit southern France, in La Bollene-Vesubie, France October 3, 2020.

A general view shows a bridge that collapsed into the Vesubie river, after heavy rainfall hit southern France, in La Bollene-Vesubie, France October 3, 2020.

A damaged car is seen in Breil-sur-Roya as clean-up operations continue after storm Alex hit southern France, bringing record rainfall in places and causing heavy flooding that swept away roads and damaged homes, France, October 5, 2020.

Workers remove mud and debris from a street in Breil-sur-Roya as clean-up operations continue after storm Alex hit southern France, bringing record rainfall in places and causing heavy flooding that swept away roads and damaged homes, France, October 5, 2020.

People remove debris from a house in Breil-sur-Roya as clean-up operations continue after storm Alex hit southern France, bringing record rainfall in places and causing heavy flooding that swept away roads and damaged homes, France, October 5, 2020.

A view shows a house flooded by Vesubie river, after heavy rainfall hit southern France, in La Bollene-Vesubie, France October 3, 2020.

A view shows firefighters standing near the Vesubie river, after heavy rainfall hit southern France, in La Bollene-Vesubie, France October 3, 2020.

A man walks on a private beach following heavy rainfall in Nice, France October 3, 2020.

People are seen on a private beach following heavy rainfall in Nice, France October 3, 2020.

A view shows a house flooded by Vesubie river, after heavy rainfall hit southern France, in La Bollene-Vesubie, France October 3, 2020.

People are seen on a private beach following heavy rainfall in Nice, France October 3, 2020.

A woman looks at damaged cars as clean-up operations continue after storm Alex hit southern France, bringing record rainfall in places and causing heavy flooding that swept away roads and damaged homes, in Breil-sur-Roya, France, October 5, 2020.

A view shows a road that collapsed into the Vesubie river, after heavy rainfall hit southern France, in La Bollene-Vesubie, France October 3, 2020. Image for illustrative purposes.

A firefighter removes mud and debris from a restaurant in Breil-sur-Roya as clean-up operations continue after storm Alex hit southern France, bringing record rainfall in places and causing heavy flooding that swept away roads and damaged homes, France, October 5, 2020.

A view shows a road that collapsed into the Vesubie river, after heavy rainfall hit southern France, in La Bollene-Vesubie, France October 3, 2020.

A damaged car and accumulated debris are seen in Breil-sur-Roya as clean-up operations continue after storm Alex hit southern France, bringing record rainfall in places and causing heavy flooding that swept away roads and damaged homes, France, October 5, 2020.

Firefighters remove mud and debris from a restaurant in Breil-sur-Roya as clean-up operations continue after storm Alex hit southern France, bringing record rainfall in places and causing heavy flooding that swept away roads and damaged homes, France, October 5, 2020.

A view shows a truck underwater in the Vesubie river, after heavy rainfall hit southern France, in La Bollene-Vesubie, France October 3, 2020.

A resident looks at a restaurant during clean-up operations in Breil-sur-Roya after storm Alex hit southern France, bringing record rainfall in places and causing heavy flooding that swept away roads and damaged homes, France, October 5, 2020.