Mount Ibu Erupts Again Tonight (Saturday, September 27, 2025)

Mount Ibu in North Maluku erupted again on Saturday (September 27, 2025) at 09:46 PM WIT. In the past week, Mount Ibu has erupted 31 times.

Based on eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the observed ash column height reached 400 meters above the peak or 1,725 meters above sea level.

The ash column was observed to be gray with thick intensity moving southwest. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 73 seconds.

(Read: Jakarta's Air Quality This Morning is the Second Worst in the World (Friday, June 17, 2022))

According to MAGMA Indonesia's volcanic activity report, Mount Ibu's activity level is at Level II (Alert). Seismic observations on September 27, 2025, from 00:00-23:59 WIT, showed 78 eruption/explosion earthquakes with amplitudes of 14-28 millimeters and durations of 31-95 seconds.

Additionally, there were 2 exhalation earthquakes with amplitudes of 4-6 millimeters and durations of 32-34 seconds, and 21 harmonic earthquakes with amplitudes of 2-28 millimeters and durations of 30-131 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 6,399 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,515 times), while Mount Ibu erupted 2,309 times.

(Read: Not Jakarta, These Are the Areas with the Worst Air Quality in Indonesia (Wednesday, June 7, 2023))