Mount Ibu Erupts Again This Afternoon (Wednesday, September 17, 2025)

Mount Ibu in North Maluku erupted again on Wednesday (September 17, 2025) at 02:09 PM WIT. In the last week, Mount Ibu has erupted 13 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 400 meters above the peak (1,725 meters above sea level).

The ash column was observed to be gray with thick intensity towards the northwest. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 71 seconds.

(Read: Volcanic Eruption Trends in Recent Years)

According to MAGMA Indonesia''s volcanic activity report, Mount Ibu''s activity level is at Level II (Alert). Seismicity observations on September 17, 2025, from 00:00-23:59 WIT showed 80 eruption earthquakes with amplitudes of 30-63 millimeters and durations of 14-28 seconds.

Subsequently, 15 harmonic earthquakes with amplitudes of 2-21 millimeters and durations of 28-204 seconds, and 78 low-frequency earthquakes with amplitudes of 2-10 millimeters and durations of 16-29 seconds occurred.

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 6,129 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,455 times) while Mount Ibu erupted 2,253 times.

(Read: Indonesia Has the Most Active Volcanoes in the World)