Mount Ibu Erupts Again Tonight (Monday, December 15, 2025)

Mount Ibu in North Maluku erupted again on Monday (15/12/2025) at 18:54 WIT. In the last week, Mount Ibu has erupted 3 times.

Citing eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height reached 600 meters above the peak or 1,925 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 58 seconds.

(Read: Number of Victims Suffering-Displaced Due to Natural Disasters in Indonesia 2015-2024)

According to the MAGMA Indonesia volcano activity report, the activity level of Mount Ibu is at Level II (Alert). Seismicity observations on December 15, 2025, from 00:00-23:59 WIT showed 112 eruption tremors with amplitudes of 15-28 millimeters and durations of 42-111 seconds.

Furthermore, there were 5 exhalation tremors with amplitudes of 5-19 millimeters and durations of 30-90 seconds, and 11 harmonic tremors with amplitudes of 2-27 millimeters and durations of 39-185 seconds.

PVMBG urges the public around Mount Ibu and visitors/tourists not to engage in activities within a radius of 2 kilometers 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 7,354 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (3,028 times), while Mount Ibu erupted 2,657 times.

(Read: Number of Injuries Due to Natural Disasters in Indonesia 2015-2024)