Semeru_Selective Volcanism News

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The volcano produced three pyroclastic flows at 09:01, 09:30 and 15:42 local time today reaching length of at least 4500 meters from the summit.

Block-and-ash flows created billowing ash plumes separating from the pyroclastic density currents (so-called phoenix clouds).
Based on this event, the volcanologists raised the alert level to Level 3.
The volcano observatory reported seismic signals with maximum amplitudes of 25, 17 and 20 mm and a duration of 395 and 400 seconds.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi volcano activity update 16 December 2021

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