Mount Ibu Erupts Again Tonight (Saturday, October 4, 2025)

Mount Ibu in North Maluku erupted again on Saturday (October 4, 2025) at 8:19 PM WIT. In the last week, Mount Ibu has erupted 37 times.

Citing 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 summit or None meters above sea level.

Eruption visuals were not observed. Mount Ibu's eruption was still ongoing when this report was made.

(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). Seismicity observations on October 4, 2025, from 00:00-23:59 WIT showed 88 explosion earthquakes with amplitudes of 15-28 millimeters and durations of 27-74 seconds.

Subsequently, there were 3 exhalation earthquakes with amplitudes of 8-13 millimeters and durations of 36-68 seconds, and 30 harmonic tremors with amplitudes of 2-10 millimeters and durations of 24-274 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 6,533 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,556 times), while Mount Ibu erupted 2,352 times.

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