Warning! Mount Ibu Erupts Again Tonight (Tuesday, September 16, 2025)

Mount Ibu in North Maluku erupted again on Tuesday (9/16/2025) at 21:46 WIT. In the last week, Mount Ibu has erupted 10 times.

Reporting eruption information from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) via the MAGMA Indonesia application, the height of the ash column was observed to be around 400 meters above the peak (1,725 meters above sea level).

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

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

According to the MAGMA Indonesia volcano activity report, Mount Ibu''s activity level is at Level II (Alert). Seismic observations on September 16, 2025, from 00:00-23:59 WIT showed 83 eruption earthquakes with amplitudes of 15-28 millimeters and durations of 27-76 seconds.

Furthermore, there were 2 exhalation earthquakes with amplitudes of 3-6 millimeters and durations of 37-48 seconds, and 24 harmonic tremors with amplitudes of 2-28 millimeters and durations of 27-208 seconds.

PVMBG urged 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 6,123 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,454 times), while Mount Ibu erupted 2,250 times.

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