Warning! Mount Ibu Erupts Again Tonight (Monday, August 4, 2025)

Mount Ibu in North Maluku erupted again on Monday (August 4, 2025) at 21:36 WIT. In the last week, Mount Ibu has erupted 4 times.

Citing 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 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 northwest. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 46 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 August 4, 2025, from 00:00-23:59 WIT showed 109 eruption/explosion earthquakes with amplitudes of 16-28 millimeters and durations of 42-82 seconds.

Furthermore, there were 8 exhalation earthquakes with amplitudes of 2-16 millimeters and durations of 32-43 seconds, and 20 harmonic earthquakes with amplitudes of 2-28 millimeters and durations of 32-265 seconds.

PVMBG urges the public around Mount Ibu and visitors/tourists not to engage in activities within a radius of 2 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 5,457 volcanic eruptions across Indonesia. Mount Semeru in East Java had the most eruptions (2,188 times), while Mount Ibu erupted 2,020 times.

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