Mount Ibu Erupts on Friday Afternoon, Activity Level at Alert

Mount Ibu in North Maluku erupted again on Friday (29/8/2025) at 4:16 PM WIT. In the last week, Mount Ibu has erupted 29 times.

Based on 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 None meters above the peak or None meters above sea level.

No visual eruption was observed. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 55 seconds.

(Read: 1,300 Natural Disasters in Indonesia until September 2024, Here are the Details)

According to MAGMA Indonesia''s volcanic activity report, Mount Ibu''s activity level is at Level II (Alert). Seismic observations on August 29, 2025, from 00:00-23:59 WIT showed 112 eruption tremors/eruptions with amplitudes of 8-28 millimeters and durations of 33-76 seconds.

Additionally, there were 2 exhalation tremors with amplitudes of 4-7 millimeters and durations of 40-42 seconds, and 19 harmonic tremors with amplitudes of 2-28 millimeters and durations of 21.82-114.19 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 5,880 volcanic eruptions/eruptions across Indonesia. Mount Semeru in East Java erupted the most (2,355 times) while Mount Ibu erupted 2,148 times.

(Read: Number of Natural Disaster Victims in Indonesia until July 8, 2025)