Severe thunderstorms and heavy rainfall have caused devastating floods and landslides in southeastern Switzerland, particularly affecting the canton of Graubünden. Three people are missing and rescue operations, involving helicopters, drones, and search dogs, are ongoing. The flooding has led to the evacuation of hundreds of residents and significant infrastructure damage, including the temporary closure of routes to the tourist town of Zermatt. Swiss President Viola Amherd described the damage as 'shocking,' and emergency personnel continue their efforts amid these challenging conditions. The Swiss Federal Office of Meteorology has warned of continued flood risks due to saturated soil unable to absorb more rain. This extreme weather event is considered a once-in-30-year occurrence, according to MeteoSchweiz.