Mount Ibu Erupts Again This Afternoon, Ash Column Height Around 700 Meters

Mount Ibu in North Maluku erupted again on Wednesday (September 3, 2025) at 3:09 PM WIT. In the last week, Mount Ibu has erupted 14 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column reached 700 meters above the peak or 2,025 meters above sea level.

The ash column was observed to be gray with thick intensity towards the southwest. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 61 seconds.

(Read: Due to Forest Fires, South Kalimantan''s ISPA Cases Reached 189 Thousand by September 2023)

According to the MAGMA Indonesia volcano activity report, Mount Ibu''s activity level is at Level II (Alert). Seismic observations on September 3, 2025, from 00:00-23:59 WIT showed 132 eruption/emission earthquakes with amplitudes of 15-28 millimeters and durations of 32-78 seconds.

Additionally, there were 3 exhalation earthquakes with amplitudes of 4-11 millimeters and durations of 38-54 seconds, and 22 harmonic earthquakes with amplitudes of 2-28 millimeters and durations of 51-131 seconds.

PVMBG advises 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 5,945 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,381 times), while Mount Ibu erupted 2,178 times.

(Read: West Kalimantan Produced the Most CO2 Emissions from Forest Fires Until July 2023)