Neighbouring Switzerland has also been hit by storms. On August 12 flash floods around the Lauterbrunnen Valley cut off the ski resort of Grindelwald, affecting 8,000 tourists. And on June 21 ...

In certain ski resorts, numbers have exploded ... St. Moritz, Grindelwald and Verbier, says Claudio Zemp, who works for Switzerland Tourism as director of operations in the Americas.