Warning! Mount Ibu Erupts Again Tonight (Thursday, December 11, 2025)

Mount Ibu in North Maluku erupted again on Thursday (11/12/2025) at 21:06 WIT. In the last week, Mount Ibu has erupted 25 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 be around 600 meters above the peak (1,925 meters above sea level).

The ash column was observed to be gray with thick intensity towards the southwest. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 66 seconds.

(Read: Indication of Forest and Land Fire Area in Central Kalimantan Province in the Last Decade)

According to MAGMA Indonesia's volcanic activity report, Mount Ibu's activity level is at Level II (Alert). Seismicity observations on December 11, 2025, at 00:00-23:59 WIT showed 90 eruption earthquakes with amplitudes of 12-28 millimeters and earthquake durations of 30-66 seconds.

Subsequently, 3 harmonic earthquakes with amplitudes of 4-8 millimeters and durations of 71-73 seconds, and 117 low-frequency earthquakes with amplitudes of 2-10 millimeters and durations of 17-29 seconds occurred.

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 7,304 volcanic eruptions across Indonesia. Mount Semeru in East Java erupted the most (3,006 times), while Mount Ibu erupted 2,631 times.

(Read: East Nusa Tenggara Always Hit by Forest and Land Fires in the Last 10 Years, BMKG Urges Increased Preparedness)