Swiss authorities order complete evacuation of 300 residents from Blatten village in Valais due to imminent landslide risk from unstable mountain.

"The situation is very acute... It's clear to everyone that the rockslide is imminent."
"In the worst-case scenario, it could be five million cubic metres"
Swiss authorities have ordered the complete evacuation of Blatten village in canton Valais, affecting approximately 300 residents due to an imminent landslide threat. The evacuation order, issued on Monday, came after experts detected significant mountain movement above the village. Residents were given until 11:30am to leave their homes, with officials emphasizing the critical nature of the situation.
Geological monitoring has revealed alarming movements in the mountain above Blatten. Experts have recorded displacement exceeding 2.90 meters, with continuous rock falls occurring. The threat involves potential water volume between 2 to 5 million cubic metres in a worst-case scenario. The instability centers around the Kleiner Nesthorn area and Birch Glacier region, with experts predicting imminent major rockfall that could impact the village directly.
The evacuation process began with an information session at the local gymnasium at 10:00am. Residents were instructed to gather essential belongings and report to the neighboring municipality of Wiler. Local authorities have coordinated accommodation arrangements, with some residents staying with relatives and friends while others are being housed in temporary facilities. The neighboring areas of Weissenried and Eisten, located on the opposite mountainside, remain unaffected by the evacuation order.
Swiss authorities have implemented comprehensive monitoring systems, including camera installations and GPS devices to track mountain movement. The cantonal Natural Hazards Department maintains constant surveillance of the situation. Emergency services have established a command center to coordinate the response, with regular updates being provided through the municipal mobile phone app and Alertswiss, the federal government's warning system.
The Birch Glacier area has been under surveillance since the 1990s, indicating a long-term awareness of potential geological risks in the region. Local authorities suggest that snow melting at altitudes above 2,500 metres may have contributed to the current crisis. This event adds to Switzerland's history of managing alpine natural hazards, highlighting the ongoing challenges faced by mountain communities in the face of changing climatic conditions.