Mount Ibu Erupted on Thursday Afternoon, Activity Level at Alert

Mount Ibu in North Maluku erupted again on Thursday (October 9, 2025) at 5:39 PM WIT. In the last week, Mount Ibu has erupted 12 times.

Reporting 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 600 meters above the peak (1,925 meters above sea level).

The ash column was observed to be white to gray with thick intensity towards the northeast. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 57 seconds.

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According to the MAGMA Indonesia volcano activity report, Mount Ibu's activity level is at Level II (Alert). Seismic observations on October 9, 2025, from 00:00-23:59 WIT showed 69 eruption tremors/earthquakes with amplitudes of 15-28 millimeters and tremor durations of 35-119 seconds.

Furthermore, 3 times of emission tremors with amplitudes of 4-10 millimeters and tremor durations of 38-40 seconds, and 27 times of harmonic tremors with amplitudes of 2-20 millimeters and tremor durations of 21-63 seconds occurred.

PVMBG urged the public around Mount Ibu and visitors/tourists not to engage in activities within a 2.0-kilometer radius and a sectoral expansion of 3.5 kilometers towards the crater opening in the northern part of Mount Ibu's active crater.

Throughout 2025, MAGMA Indonesia has recorded 6,599 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,592 times), while Mount Ibu erupted 2,366 times.

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