Warning! Mount Ibu Erupts Again Tonight (Sunday, December 21, 2025)

Mount Ibu in North Maluku erupted again on Sunday (21/12/2025) at 20:40 WIT. In the last week, Mount Ibu has erupted 39 times.

Citing 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 grey with thick intensity towards the northeast. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 50 seconds.

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

According to the MAGMA Indonesia volcanic activity report, Mount Ibu's activity level is at Level II (Alert). Seismic observations on December 21, 2025, from 00:00-23:59 WIT showed 107 eruption/explosion earthquakes with amplitudes of 15-28 millimeters and earthquake durations of 42-103 seconds.

Furthermore, there was 1 exhalation earthquake with an amplitude of 6 millimeters and a duration of 36 seconds, and 7 harmonic earthquakes with amplitudes of 3-8 millimeters and durations of 45-132 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 7,461 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (3,097 times), while Mount Ibu erupted 2,693 times.

(Read: West Kalimantan Produced the Most CO2 Emissions from Forest and Land Fires until July 2023)