Warning! Mount Ibu Erupts Again Tonight (Thursday, December 18, 2025)

Mount Ibu in North Maluku erupted again on Thursday (18/12/2025) at 23:04 WIT. In the last week, Mount Ibu has erupted 21 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 500 meters above the peak (1,825 meters above sea level).

The ash column was observed to be 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 53 seconds.

(Read: Nearly 5 Thousand Natural Disaster Events in Indonesia Throughout 2023, Forest Fires Dominate)

According to MAGMA Indonesia's volcano activity report, Mount Ibu's activity level is at Level II (Alert). Seismicity observations on December 18, 2025, from 00:00-23:59 WIT showed 112 eruption/explosion earthquakes with amplitudes of 14-28 millimeters and earthquake durations of 37-76 seconds.

Furthermore, 2 exhalation earthquakes with amplitudes of 4-6 millimeters and earthquake durations of 35-39 seconds, and 13 harmonic earthquakes with amplitudes of 2-20 millimeters and earthquake durations of 51-120 seconds occurred.

PVMBG advises the public around Mount Ibu and visitors/tourists not to carry out 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 7,393 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (3,048 times), while Mount Ibu erupted 2,675 times.

(Read: Indication of Forest and Land Fire Area in East Kalimantan until June 2025)