Warning! Mount Ibu Erupts Again Tonight (Wednesday, October 15, 2025)

Mount Ibu in North Maluku erupted again on Wednesday (October 15, 2025) at 18:50 WIT. In the last week, Mount Ibu has erupted 15 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 or 1,725 meters above sea level.

The ash column was observed to be gray with thick intensity towards the northeast. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 56 seconds.

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

According to MAGMA Indonesia's volcanic activity report, Mount Ibu's activity level is at Level II (Alert). Seismic observations on October 15, 2025, from 00:00-23:59 WIT showed 80 eruption earthquakes with amplitudes of 15-28 millimeters and earthquake durations of 33-156 seconds.

Subsequently, there was 1 exhalation earthquake with an amplitude of 8 millimeters and a duration of 41 seconds, and 14 harmonic earthquakes with amplitudes of 2-6 millimeters and durations of 28-115 seconds.

PVMBG urges 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 6,663 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,621 times) while Mount Ibu erupted 2,387 times.

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