The wave of bad weather preannounced last Saturday with the issuing of an ordinary ('yellow') alert by the Trentino Civil Protection produced its main effects on the morning of today (Monday, 1 April).
In Verdesina, a hamlet of the municipality of Porte di Rendena, a mud and debris landslide from the slope above the village involved two houses, which were evacuated.
The most significant phenomenon in terms of volume - several thousand cubic metres of debris - affected the Cà Rossa locality, in the municipality of Storo, where the heavy rainfall caused the Rio Bianco (dialectally known as Rio Lebràc) to flood and triggered a debris flow that cut through the riverbed just downstream of the Faserno locality, at an altitude of about 1,400 metres, dragging along debris of various sizes, from clays to boulders larger than one cubic metre. The torrential lava crashed against the 'filtering bridle' built in 2017 by the Servizio Bacini Montani at the apex of the dejection cone (elevation 500 or so). The 'storage square' located to the rear of the dam retained about four thousand cubic metres of material (the equivalent of the material that can be transported by 400 lorries) and prevented the debris from flowing entirely over the cone.
Publication date: 01/04/2024
