"An eruption occurred at Mount Marapi in West Sumatra on November 3, 2025, at 10:57 a.m. local time, with an ash column observed at approximately 300 meters above the summit," said a PGA official, Teguh Purnomo, in Padang on Monday.
According to the PGA report, the ash column was white to gray in color and thick, tilting toward the southeast. The eruption was recorded on a seismogram with a maximum amplitude of 22.5 and a duration of approximately 29 seconds.
Mount Marapi remains at Caution Level II. The Center for Volcanology and Geological Hazard Mitigation (PVMBG) has issued several recommendations, including prohibiting the public, tourists, and visitors from engaging in activities within a three-kilometer radius of the center of activity (Verbeek Crater).
The PVMBG also warned of the potential threat of cold lava flows, especially for communities living along rivers that originate from the volcano’s summit. The situation is particularly acute during rain or the rainy season.
If ashfall occurs, residents are also advised to wear masks covering their noses and mouths to avoid respiratory tract infections.
The PGA and the PVMBG also continue to warn of the accumulation of material from the volcanic eruption, which can cause water flows and potentially trigger cold lava floods.
This situation cannot be ignored as it is highly vulnerable and dangerous, especially during heavy rainfall. The most likely outcome is a cold lava flood similar to the May 11, 2025, incident that claimed dozens of lives.
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Translator: Muuhammad Zulfikar, Cindy Frishanti Octavia
Editor: Arie Novarina
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