The Moving Mountain: How Alpine Cloudbursts Unleash Debris Flows on Austria's Valleys
In the high Austrian Alps, steep terrain can force moist, unstable air upward into violent, very localised cloudbursts. The torrents they unleash mobilise debris flows, the Muren, that bury homes, sever road and rail links and cut off whole valleys, as in Carinthia in 2022. Austria spends around 69 million euros a year on torrent control, and research suggests warming is widening the conditions that set these flows off.