A pyroclastic flow (hot avalanche of lava particles and ash) descended the southwestern flank of the volcano at 15:00 local time today, reaching approx. 1500 m distance from the summit. It resulted from a partial collapse of the growing active lava dome at the southwestern rim of the volcano’s summit crater.
Ash plumes were separated from pyroclastic density currents (so-called phoenix clouds) that rose above the crater. The visibility of the event was very limited due to dense clouds.
Events were detected on a seismic signal with maximum amplitudes of 35 mm and a duration of 94 seconds.
The public is being warned to stay at least 3 km away from the summit.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi volcano activity update 1 April 2022
Awanpanas guguran #Merapi tanggal 1 April 2022 pukul 15.00 WIB tercatat di seismogram dengan amplitudo 35 mm dan durasi 94 detik. Visual tertutup kabut, estimasi jarak luncur 1.500 m ke arah barat daya.#MerapiSiaga sejak 5 November 2020 pic.twitter.com/npqqMp2obg
— BPPTKG (@BPPTKG) April 1, 2022