Mount Ibu Erupts Again This Afternoon, Ash Plume 500 Meters Above Peak

Mount Ibu in North Maluku erupted again on Sunday (October 19, 2025) at 5:51 PM WIT. In the last week, Mount Ibu has erupted 39 times.

According to eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the ash plume was observed to reach 500 meters above the peak or 1,825 meters above sea level.

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

(Read: Countries with the Most Active Volcanoes in the World, Indonesia Ranks First)

According to MAGMA Indonesia's volcano activity report, Mount Ibu's activity level is at Level II (Alert). Seismic observations on October 19, 2025, from 00:00-23:59 WIT showed 88 eruption earthquakes with amplitudes of 15-28 millimeters and earthquake durations of 32-76 seconds.

Furthermore, there were 3 exhalation earthquakes with amplitudes of 4-20 millimeters and earthquake durations of 33-43 seconds, and 11 harmonic earthquakes with amplitudes of 2-20 millimeters and earthquake durations of 21-85 seconds.

PVMBG advises the public around Mount Ibu and visitors/tourists not to engage in activities within a radius of 2.0 kilometers 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 6,708 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,638 times), while Mount Ibu erupted 2,411 times.

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