PARIS—Scuba divers found two people dead inside an upended car lolling on a beach after torrential rains wrought havoc along France’s Riviera coast in the night of Oct. 10, when flash floods also killed 10 on the Mediterranean island of Mallorca.
Meteorologists said major downpours were a classic phenomenon at this time of year but that exceptionally warm sea water along the Mediterranean coast of southern France probably reinforced the impact.
