Mount Ibu Erupts Again This Afternoon, Ash Plume 400 Meters Above Peak

Mount Ibu in North Maluku erupted again on Monday (July 28, 2025) at 11:34 AM WIT. In the last week, Mount Ibu has erupted 2 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 400 meters above the peak or 1,725 meters above sea level.

The ash column was observed to be white to gray with moderate intensity towards the northwest. The eruption was recorded on a seismograph with a maximum amplitude of 28 millimeters and a duration of 67 seconds.

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According to the MAGMA Indonesia volcano activity report, Mount Ibu's activity level is at Level II (Alert). Seismic observations on July 28, 2025, from 00:00-23:59 WIT showed 119 eruption/emission earthquakes with amplitudes of 15-28 millimeters and earthquake durations of 33-72 seconds.

Subsequently, 1 exhalation earthquake with an amplitude of 6 millimeters and a duration of 52 seconds, and 20 harmonic tremors with amplitudes of 2-28 millimeters and durations of 31-121 seconds were recorded.

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 5,346 volcanic eruptions/emissions across Indonesia. Mount Semeru in East Java had the most eruptions (2,146 times) while Mount Ibu erupted 1,977 times.

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