Mount Ibu Erupts Again Tonight (Sunday, October 12, 2025)

Mount Ibu in North Maluku erupted again on Sunday (October 12, 2025) at 21:06 WIT. In the last week, Mount Ibu has erupted 18 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 observed reached 500 meters above the peak (1,825 meters above sea level).

The ash column was observed to be white to gray with thick intensity towards the northeast. The eruption was recorded on a seismograph with a maximum amplitude of 29 millimeters and a duration of 41.79 seconds.

(Read: Due to Forest Fires, ISPA Cases in South Kalimantan Reached 189 Thousand as of September 2023)

According to MAGMA Indonesia's volcano activity report, the activity level of Mount Ibu is at Level II (Alert). Seismicity observations on October 12, 2025, from 00:00-23:59 WIT showed 117 eruption/explosive earthquakes with amplitudes of 11-28 millimeters and earthquake durations of 37-230 seconds.

Subsequently, there was 1 exhalation earthquake with an amplitude of 4 millimeters and a duration of 34 seconds, and 12 harmonic earthquakes with amplitudes of 2-28 millimeters and earthquake durations of 18-120 seconds.

PVMBG urges the public around Mount Ibu and visitors/tourists not to engage in activities within a radius of 2.0 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 6,632 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,613 times), while Mount Ibu erupted 2,372 times.

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