Mount Marapi Erupts Again This Morning, Volcanic Ash Plume 800 Meters Above Peak

Mount Marapi in West Sumatra erupted again on Wednesday (27/8/2025) at 09:14 AM WIB. In the last week, Mount Marapi only erupted once.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the observed ash column reached 800 meters above the peak (3,691 meters above sea level).

The ash column was observed to be white to grey with thick intensity towards the north. The eruption was recorded on a seismograph with a maximum amplitude of 27.1 millimeters and a duration of 38 seconds.

(Read: Jatibening Included in the List of 15 Regions with the Best Air Quality in Indonesia as of September 2023)

According to MAGMA Indonesia''s volcano activity report, Mount Marapi''s activity level is at Level II (Alert). Seismic observations on August 27, 2025, from 00:00-23:59 WIB showed 3 exhalation tremors with amplitudes of 1-1.4 millimeters and durations of 30-36 seconds.

Subsequently, 3 local tectonic earthquakes with amplitudes of 1.1-3.3 millimeters, S-P times of 2.2-5.1 seconds, and durations of 16-24 seconds, as well as 3 distant tectonic earthquakes with amplitudes of 1-1.4 millimeters, S-P times of 12.5-20.7 seconds, and durations of 42-72 seconds occurred.

PVMBG urges the public around Mount Marapi and climbers/visitors/tourists not to enter or conduct activities within a 3-kilometer radius from the center of activity (Verbeek Crater) of Mount Marapi.

Throughout 2025, MAGMA Indonesia has recorded 5,824 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,330 times) while Mount Marapi erupted 88 times.

(Read: Jakarta''s Air Quality This Morning is Third Worst in the World (Tuesday, June 6, 2023))