Lunedì nelle Alpi sono previste importanti nevicate. Localmente potrebbero cadere dai 60 centimetri al metro di neve fresca. In aumento, di conseguenza, il pericolo di valanghe.
Il rischio sarà "molto forte" (livello 5, il più elevato) dall'Oberland bernese fino alla regione appenzellese dell'Alpstein, nonché nell'Alto Vallese e nella regione grigionese di Silvretta, avverte domenica l'Istituto per lo studio della neve e delle valanghe (SLF).
Nelle ultime due settimane era già caduta eccezionalmente tanta neve in alcuni punti delle regioni nord orientali. Qui l’innevamento è superiore alla media stagionale: in molti punti l’altezza del manto nevoso ha raggiunto da 1,5 a 2 volte quella tipica del periodo.
L’allerta di livello 5 si verifica solo molto raramente in Svizzera. Su larga scala era stato previsto l’ultima volta nel gennaio 2018 e prima ancora nell’inverno del 1999.
ATS/Red. MM
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