Merapi volcano, Central Java – 23-25 August 2023 – still ongoing lava avalanches.

Activity of the Volcano:

Observed Merapi from a distance of 7 km SW of the volcano, for a total of 12 hours during 23-25th August . Weather conditions: Mostly clear but periods with sporadic fog emerging. During my observations almost continuous lava avalanches from the SW lava dome was observed. Activity was higher than during my visit in July. During the largest avalanches the sound of the rockfall could be clearly heard.

According to Indonesian Authorities BPPTKG, as of the 25th August 2023, the 2021 lava dome on the SW flank of Merapi has a volume of 2.764.300 m3, and the lava dome in the central part of the crater of Merapi 2.369.800 m3.

5 km restriction zone is currently in place for Merapi volcano, according to Indonesian Authorities BPPTKG, The Center for Volcanology and Geological Hazard Mitigation, Geological Agency. The volcano is as of today 30th August 2023 still on alert level III.


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23-25th August