At least 7 pyroclastic flows descended from the slopes of Mount Merapi, Indonesia, on August 7 and 8, 2021, the ash rose to a height of 3.6 km above sea level. No casualties were reported. The aviation color code remained orange.
According to the Merapi observatory, the seismogram recorded serial pyroclastic dense flows (PDC) with a maximum amplitude of 20 mm and a duration of 3.7 minutes.
The farthest sliding distance was 3 km southwest (Kali Bebeng).
The rumble of the eruption was heard several kilometers from the volcano, said Hanik Humayda, head of the Yogyakarta Volcanology and Geological Hazard Mitigation Center.
According to Humayda, there has been increased volcanic activity on Merapi in recent weeks, with a lava dome growing rapidly and then partially collapsing during this eruption.
Ashes covered several villages and nearby towns.