Mount Marapi Erupted on Friday Night, Status is Alert

Mount Marapi in West Sumatra erupted again on Friday (26/9/2025) at 18:31 WIB. In the last week, Mount Marapi has erupted 3 times.

Citing eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the ash column was observed to be around 1,000 meters above the peak or 3,891 meters above sea level.

The ash column was observed to be white to gray with thick intensity towards the east. The eruption was recorded on a seismograph with a maximum amplitude of 30.4 millimeters and a duration of 46 seconds.

(Read: Indonesia Has the Most Active Volcanoes in the World)

According to MAGMA Indonesia's volcanic activity report, Mount Marapi's activity level is at Level II (Alert). Seismic observations on September 26, 2025, from 00:00-23:59 WIB showed 7 exhalative earthquakes with amplitudes of 1.1-2.3 millimeters and durations of 31-54 seconds.

Subsequently, 42 non-harmonic tremors with amplitudes of 1-5.7 millimeters and durations of 69-557 seconds, and 1 tornillo earthquake with an amplitude of 2.3 millimeters and a duration of 63 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 6,359 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,500 times) while Mount Marapi erupted 104 times.

(Read: Volcanic Eruption Trends in Recent Years)