Mount Ibu Erupts Again Tonight (Saturday, December 20, 2025)

Mount Ibu in North Maluku erupted again on Saturday (12/20/2025) at 21:14 WIT. In the last week, Mount Ibu has erupted 34 times.

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 400 meters above the peak (1,725 meters above sea level).

The ash column was observed to be gray with moderate intensity towards the east. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 103 seconds.

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According to MAGMA Indonesia's volcanic activity report, Mount Ibu's activity level is at Level II (Alert). Seismic observations on December 20, 2025, at 00:00-23:59 WIT showed 114 eruption/explosive earthquakes with amplitudes of 15-28 millimeters and earthquake durations of 35-96 seconds.

Subsequently, there were 11 harmonic earthquakes with amplitudes of 2-10 millimeters and durations of 44-114 seconds, and 139 low-frequency earthquakes with amplitudes of 2-10 millimeters and durations of 17-29 seconds.

PVMBG advises the public around Mount Ibu and visitors/tourists not to engage in activities within a 2-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 7,443 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (3,084 times) while Mount Ibu erupted 2,688 times.

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