Warning! Mount Marapi Erupts Again Tonight (Thursday, September 4, 2025)

Mount Marapi in West Sumatra erupted again on Thursday (4/9/2025) at 21:44 WIB. In the last week, Mount Marapi only erupted once.

Citing eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height reached None meters above the peak or None meters above sea level.

The visual eruption was not observed. The eruption was recorded on a seismograph with a maximum amplitude of 30.4 millimeters and a duration of 44 seconds.

(Read: Indonesia Becomes the Country Most Frequently Struck by Earthquakes as of 2025)

According to MAGMA Indonesia''s volcanic activity report, Mount Marapi''s activity level is at Level II (Alert). Seismic observations on September 4, 2025, from 00:00-23:59 WIB showed 5 exhalation earthquakes with amplitudes of 1-2.8 millimeters and durations of 15-33 seconds.

Subsequently, there were 2 deep volcanic earthquakes with amplitudes of 1.3-4 millimeters s-p 1-2.2 seconds and durations of 13-21 seconds, and 3 local tectonic earthquakes with amplitudes of 1.3-11 millimeters s-p 2.2-3 seconds and durations of 13-27 seconds.

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

Throughout 2025, MAGMA Indonesia has recorded 5,962 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,386 times), while Mount Marapi erupted 93 times.

(Read: Last Five Earthquakes Recorded by BMKG (Saturday, July 19, 2025 13:53:43 WIB))