Mount Ibu Erupts on Tuesday Afternoon, Activity Level at Alert

Mount Ibu in North Maluku erupted again on Tuesday (11/11/2025) at 17:40 WIT. In the last week, Mount Ibu has erupted 9 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 400 meters above the peak or 1,725 meters above sea level.

The ash column was observed to be white to grey with moderate to thick intensity towards the southeast. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 55 seconds.

(Read: A 4.5 M Earthquake Shakes 94 Km Southwest of Banda Aceh,)

According to the MAGMA Indonesia volcano activity report, Mount Ibu's activity level is at Level II (Alert). Seismicity observations on November 11, 2025, from 00:00-23:59 WIT showed 86 eruption earthquakes with amplitudes of 15-28 millimeters and earthquake durations of 36-94 seconds.

Additionally, there was 1 exhalation earthquake with an amplitude of 10 millimeters and a duration of 47 seconds, and 12 harmonic earthquakes with amplitudes of 2-14 millimeters and durations of 36-95 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 6,931 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,784 times), while Mount Ibu erupted 2,485 times.

(Read: Last Five Earthquakes Recorded by BMKG (Saturday, July 19, 2025 13:53:43 WIB))