Warning! Mount Ibu Erupts Again This Afternoon (Saturday, December 20, 2025)

Mount Ibu in North Maluku erupted again on Saturday (20/12/2025) at 3:28 PM WIT. In the last week, Mount Ibu has erupted 29 times.

Based on 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 reach 600 meters above the peak or 1,925 meters above sea level.

The ash column was observed to be gray with moderate intensity moving eastward. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 47 seconds.

(Read: 4.2 M Earthquake Shakes Fox Aleutian Islands)

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

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

PVMBG urges 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 7,430 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (3,076 times), while Mount Ibu erupted 2,683 times.

(Read: 4.16 M Earthquake Shakes Mona Passage)