Mount Ibu Erupts Again This Morning (Saturday, December 20, 2025)

Mount Ibu in North Maluku erupted again on Saturday (20/12/2025) at 06:03 AM WIT. In the last week, Mount Ibu has erupted 26 times.

According to eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the observed ash column reached 500 meters above the peak (1,825 meters above sea level).

The observed ash column was white to gray with moderate to thick intensity towards the northeast. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 40 seconds.

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

According to the MAGMA Indonesia volcano activity report, Mount Ibu's activity level is at Level II (Alert). Seismicity observations on December 20, 2025, from 00:00-23:59 WIT showed 114 eruption tremors with amplitudes of 15-28 millimeters and tremor durations of 35-96 seconds.

Subsequently, there were 11 harmonic tremors with amplitudes of 2-10 millimeters and tremor durations of 44-114 seconds, and 139 low-frequency tremors with amplitudes of 2-10 millimeters and tremor durations of 17-29 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 7,424 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (3,073 times), while Mount Ibu erupted 2,680 times.

(Read: Due to Forest Fires, Acute Respiratory Infections in South Kalimantan Reached 189 Thousand Cases by September 2023)